JP2001152377A - Spray type cleaning device and cleaning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spray type cleaning device and a spray type cleaning method capable of effectively preventing the rampage of planar bodies to be cleaned in the case sprayed cleaning solutions are struck against the planar bodies and capable of preventing the generation of the defects in the appearance such as flaws and dents of the planar bodies at the time of spray type cleaning. SOLUTION: In this cleaning device 1, the upper direction of a carrying means 2 is provided with spray nozzles 4 for determent so as to spray spray flows of water or the like separately from cleaning solution spray nozzles 3, and in a state in which the planar bodies X to be cleaned are pressed against the carrying means 2 and fixed by the spray flows of water or the like from the spray nozzles 4 for determent, the spray of cleaning solutions is executed from the cleaning solution spray nozzles 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate-shaped member to be cleaned such as a tube element constituting a laminated heat exchanger or an inner fin disposed in a refrigerant passage constituted by two tube elements. The present invention relates to a spray-type cleaning device and a cleaning method for cleaning a body with a cleaning liquid.

[0002] In this specification, the term "aluminum" is used to include aluminum and its alloys.

[0003]

2. Description of the Related Art Conventionally, when degreasing and washing a plate-like body such as a tube element for a laminated heat exchanger made of aluminum with a washing liquid, it is common practice to use a washing apparatus as shown in FIG. there were. That is, in the transport process of transporting the plate-like body (100) to be cleaned by the conveyor (101), the cleaning liquid disposed at predetermined intervals above and below the conveyor (101) in the transport direction of the conveyor (101). Degreasing cleaning has been performed by injecting the cleaning liquid from the injection nozzle (102) to the plate-like body (100). The cleaning solution was added to the plate (10
Since the cleaning method uses the injection pressure to be injected in 0),
Excellent cleaning performance.

In this conventional method, a cleaning liquid injection nozzle (10
2) are arranged at a certain interval from each other.
The reason why it is necessary to provide such an interval is that, when the intervals are narrowed, the splashing liquid ejected from the adjacent ejection nozzles (102) and rebounding on the plate-like body (100) and the ejected cleaning liquid This causes a phenomenon in which the particles collide with each other and interfere with each other, and as a result, the cleaning power is significantly reduced.

[0005]

However, in the above-mentioned prior art, since the cleaning liquid injection nozzles (102) are arranged with a certain distance therebetween, the cleaning liquid injection nozzle (1) is disposed.
02)... Are sprayed intermittently on the plate-like body (100), causing the following problem. That is, the jetted cleaning liquid is used for cleaning the plate-like body (1).
00), the plate to be cleaned (1)
00), there is a problem that a rampage easily occurs. In particular, when the jet cleaning liquid starts to hit one end (100a) of a certain plate-like body (100) in the process of being conveyed, and the jet cleaning liquid hits the other end (100b). At the end, rampage was particularly pronounced (see FIG. 5). It is considered that the pressure balance with respect to the plate-like body (100) is largely biased. Further, in cleaning mainly for degreasing, it is necessary to increase the injection pressure inevitably. Therefore, in the cleaning mainly for such degreasing, occurrence of a rampage is remarkable. When such a plate-like body to be cleaned runs out, the plate-like body to be cleaned may be damaged or dent due to, for example, contact with a conveyor or the like, and there is a problem that the product appearance cannot be maintained in a good state. Was. Further, the occurrence of such scratches and dents lowers the yield of the product, and as a result, there is a problem that good productivity cannot be secured.

The present invention has been made in view of such a technical background, and it is possible to effectively prevent the plate to be cleaned from being violent when the sprayed cleaning liquid hits the plate to be cleaned. It is another object of the present invention to provide a spray-type cleaning apparatus and a spray-type cleaning method that can prevent appearance defects such as scratches and dents of a plate-shaped body during spray-type cleaning.

[0007]

Means for Solving the Problems In order to achieve the above-mentioned object, the present inventors have made intensive studies and, as a result, have been made to inject a jet of water or the like separately from the jet nozzle for washing. By providing a plurality of suppression spray nozzles, and in a state where the plate to be cleaned is held down and fixed to the conveying means by a spray flow of water or the like from the suppression spray nozzle, by spraying the cleaning liquid, The inventor has found that the plate-like body to be cleaned can be effectively prevented from being violent, and the present invention has been completed.

[0008] That is, a spray-type cleaning apparatus according to the present invention is a spray-type cleaning apparatus for cleaning a metal plate to be cleaned. Means, a plurality of cleaning liquid ejection nozzles arranged at predetermined intervals in the transport driving direction of the transport means above the transport means, and configured to inject a cleaning liquid,
The cleaning liquid injection nozzle is provided at a position different from the cleaning liquid injection nozzle above the transporting means, and is provided with a plurality of suppression injection nozzles configured to inject an injection flow of water or the like.

Since the jet flow of water or the like is jetted from the suppression jet nozzle to the plate to be cleaned, the plate to be cleaned can be held down and fixed to the conveying means. Since the cleaning liquid is sprayed on the plate to be cleaned in a state of being held down and fixed, the occurrence of the ramp of the plate to be cleaned caused by the injection of the cleaning liquid is effectively prevented.

In the above-described cleaning apparatus, the arrangement interval of the suppression spray nozzles in the transport driving direction of the transport means is set to be small, and as shown in FIG. 3 and FIG. It is preferable that the nozzle is continuously pressed and fixed by the jet flow of the suppression jet nozzle. The continuous pressing and fixing can more effectively prevent the plate-like body to be cleaned from being violently caused by the spray of the cleaning liquid.

Further, as shown in FIG. 3, the jet flow of water or the like jetted from the suppression jet nozzle onto the upper surface of the plate-like body to be conveyed is continuous without any intermittent flow in the conveying direction. It is more preferable to make contact with the plate member. With such a configuration, the occurrence of the ramp of the plate-like body to be cleaned is reliably prevented.

It is preferable that the plurality of cleaning liquid jet nozzles are provided above and below the transporting means. By arranging the cleaning liquid spray nozzle also below, cleaning can be performed simultaneously on both surfaces of the plate-like body to be cleaned, so that cleaning can be performed efficiently.

[0013] The spray cleaning method according to the present invention is directed to a spray cleaning method for cleaning a metal plate to be cleaned, which is conveyed by a conveying means, by spraying a cleaning liquid with a nozzle. The cleaning liquid is sprayed onto the plate-like body to be cleaned in a state where the plate-like body to be cleaned is held down and fixed to the conveying means by a jet flow of water or the like from a suppression spray nozzle. is there.

Since the cleaning liquid is sprayed in a state in which the plate to be cleaned is held down and fixed to the conveying means by the jet flow from the suppression nozzle, the ramp of the plate caused by the injection of the cleaning liquid is generated. Can be effectively prevented.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a spray-type cleaning apparatus according to the present invention will be described below with reference to the drawings. In the spray type cleaning device (1) shown in FIGS.
(2) is a conveying means, (3) is a cleaning liquid injection nozzle, (4)
Is a depressing injection nozzle.

The transport means (2) transports the plate-like body to be cleaned (X) to be cleaned while supporting it from below, and circulates two parallelly arranged at predetermined intervals. While the endless chains (7) and (7) are respectively loosely disposed in the transport frames (9) and (9) on both sides, a pair of metal endless chains (7) and (7) is formed between the two endless chains (7) and (7). A plurality of supporting rods (8) (8) are arranged at predetermined intervals in the length direction thereof and connected and fixed to an endless chain.
The endless chains (7), (7) of the book are transported and driven by driving means (not shown). The plate to be cleaned (X) is mounted on the pair of support rods (8) and (8), and is conveyed from right to left in the drawing.

Above the transport means (2), a plurality of cleaning liquid spray nozzles (3) are arranged so that the spray ports face downward. That is, the cleaning liquid injection nozzle (3)
While being arranged at predetermined intervals in the width direction of the transport means (2), the transport drive direction (length direction) of the transport means (2)
Are arranged at predetermined intervals. The position of the cleaning liquid injection nozzles (3)... In the width direction of the transport means (2) is determined by the plate-like body (X) to be transported mounted and transported on the support rods (8) and (8). The cleaning liquid is set so as to be able to be in contact with the entire surface of (1).

On the other hand, a plurality of cleaning liquid jet nozzles (3) having the same structure are also provided below the transport means (2).
Are arranged immediately below each of the cleaning liquid ejection nozzles arranged above in such a manner that the ejection ports face upward.

As shown in FIG. 1, each of these cleaning liquid injection nozzles (3) is connected to a cleaning liquid supply tank (not shown) through a cleaning liquid supply pipe (10).
The cleaning liquid can be sprayed at a predetermined spray pressure. The injection pressure of the cleaning liquid injection nozzle (3) is not particularly limited, but is usually 0.05 to 0.3 MPa. Further, as the type of the cleaning liquid injection nozzle (3), for example, a full cone type, a V nozzle type, or the like can be employed, but it is preferable to employ a V nozzle type capable of exhibiting more excellent degreasing properties.

The washing liquid is not particularly limited. For example, when the main purpose is degreasing, an aqueous washing agent (acid or alkali) or the like is used.

Further, a plurality of suppressing spray nozzles (4) are arranged above the transport means (2) at positions different from the cleaning liquid spray nozzles (3) so that the spray ports face downward. Have been. That is, the transporting means (2)
A series of suppression injection nozzles (4) are arranged on the front side with respect to the center line in the width direction, and a series of suppression injection nozzles (4) are arranged on the rear side. As shown in FIG. 1, each of these suppression spray nozzles (4) is connected to a water supply tank (not shown) via a water supply pipe (11), and sprays water at a predetermined spray pressure. It is made to be able to do. Although the injection pressure of the suppression injection nozzle (4) is not particularly limited, it is usually 0.05 to 0.3 MPa.
(However, 0.01 to 0.1MP than the normal cleaning liquid injection pressure
a Set to a lower pressure).

Thus, the spray type cleaning device (1)
In the operating state of (1), the support rod (8) of the conveying means (2)
(8) The cleaning liquid jet nozzle (3) is applied to each of the plate-like bodies (X) to be cleaned, which are transported in order in a state of being mounted on the (8).
The cleaning liquid is sprayed from... To clean the plate-like body (X). At this time, the plate-like body (X) to be cleaned is moved by the injection pressure of the water sprayed from the suppression spray nozzle (4). Since it can be fixed to the support rods (8) and (8),
It is possible to effectively prevent the plate-shaped body (X) from being violently caused by spraying the cleaning liquid. Therefore, it is possible to effectively prevent appearance defects such as scratches and dents in the plate-like body (X) after cleaning.

In the above embodiment, the arrangement interval of the suppression spray nozzles (4) in the transport direction is set to be small, and the plate-like body to be cleaned (X) is moved in the transport process. ) Are continuously suppressed and fixed by the jet flow, so that there is an advantage that the generation of the plate-shaped body (X) to be cleaned caused by the jet of the cleaning liquid can be more effectively prevented.

Further, in the above-described embodiment, in the cross section in the transport direction, the jet of water or the like jetted from the suppression injection nozzles (4) to the upper surface of the plate-like body (X) to be transported is transported in the transport direction. In this case, since the contact is made in a continuous state without any interruption (see FIG. 3), it is possible to reliably prevent the plate-shaped body (X) from being violently generated.

As described above, the arrangement interval of the suppression spray nozzles (4) can be set to be small because the suppression spray nozzles (4) are not intended for cleaning but for holding down the plate-like body (X). This is because, since the purpose is to fix, it is not necessary to consider a decrease in cleaning performance due to interference between adjacent injection nozzles (4).

Further, in the above embodiment, water is injected from the suppression nozzles (4)..., However, the invention is not particularly limited to this. However, when the cleaning liquid is water-based, it is preferable to use water as the suppression spray fluid, and it is extremely desirable to use water from the viewpoint of cost.

In the above embodiment, the suppression nozzles (4) are arranged in two lines in parallel in the transport direction. However, the invention is not limited to such a structure. Or a plurality of three or more streams. However, from the viewpoint of more effectively preventing the occurrence of rampage, at least one series of suppression nozzles (4) is arranged in front of the center line in the width direction of the conveying means (2) as in the above embodiment. On the other hand, it is desirable to adopt a configuration in which at least one series of suppression injection nozzles (4). By arranging the suppression spray nozzles (4)... On both sides of the center line in the width direction of the conveying means (2) in this manner, the center line (conveyance) of the cleaning target plate-like body (X) is likewise provided. (A center line along the direction) can be jetted on both sides of the plate, and the injection pressure for the suppression acts more uniformly on the entire plate-shaped body (X). Therefore, since the overall pressure balance can be improved, the occurrence of rampage can be more effectively prevented.

In the above embodiment, the transport means (2)
Cleaning liquid spray nozzles (3) (3) (3) in the width direction of
Is adopted as a set, but the present invention is not particularly limited to such a form (number), and is appropriately determined according to the size, shape, and the like of the plate-like body (X) to be cleaned. It is set.

In the present invention, when the contact area with the plate-like body to be cleaned (X) is large, the transporting means (2) is configured to spray the cleaning liquid also from below as in the above embodiment. Since the contact portion tends to be insufficiently sprayed with the cleaning liquid when the cleaning liquid is sprayed, the conveying means (2)
It is preferable that the contact area between the substrate and the plate-like body (X) to be cleaned is made as small as possible as in the above embodiment.
In addition, the conveyor type (2) is preferably a conveyor type as in the above embodiment because of its excellent continuous transportability. The spray type cleaning apparatus and the cleaning method of the present invention are suitable for any type of cleaning. Although it is also applicable, it is particularly suitable for cleaning mainly for degreasing, in which it is necessary to increase the injection pressure inevitably and the occurrence of rampage is remarkable.

The metal plate (X) to be cleaned is
Is not particularly limited as long as it has a plate-like shape. For example, it is disposed in an aluminum tube element constituting a laminated heat exchanger or in a refrigerant passage constituted by two tube elements. Aluminum fins and the like.

[0031]

As described above, the spray-type cleaning apparatus of the present invention has the spray nozzles for suppressing, so that the plate to be cleaned can be held down and fixed to the conveying means by the jet flow from now on. Since the cleaning liquid is sprayed onto the plate to be cleaned in such a pressed and fixed state, the violence of the plate to be cleaned which has been conventionally caused by the spray of the cleaning liquid can be effectively prevented, and as a result, after cleaning. It is possible to effectively prevent the appearance of defects such as scratches and dents in the plate-like body. Further, since it is only necessary to newly provide a deterrent spray nozzle for the existing spray-type cleaning device, the device can be configured with a small equipment cost, which is economical.

The arrangement interval of the inhibiting spray nozzles in the transport drive direction of the transport means is set small, and the plate to be cleaned is continuously suppressed and fixed by the spray flow of the inhibiting nozzles during the transport process. In such a case, it is possible to more effectively prevent the plate-like body to be cleaned from being violent, and to more effectively prevent the appearance of a defective appearance such as a scratch or a dent in the washed plate-like body. it can.

In the case where the jet flow of water or the like jetted from the deterrent jet nozzle to the upper surface of the conveyed plate-like body to be washed comes into continuous contact without any interruption in the conveying direction. Can reliably prevent the plate-like body to be cleaned from being violent, and can reliably prevent the appearance of defects such as scratches and dents in the washed plate-like body.

When a plurality of cleaning liquid jet nozzles are provided above and below the transporting means, it is possible to simultaneously clean both surfaces of the plate-like body to be cleaned, so that cleaning can be performed efficiently.

Further, the spray cleaning method of the present invention comprises:
The cleaning liquid is sprayed in a state in which the plate to be cleaned is held down and fixed to the transporting means by the jet flow from the suppression nozzle, so that the occurrence of the plate-like body turbulence caused by the spray of the cleaning liquid is effectively performed. In addition, it is possible to effectively prevent occurrence of appearance defects such as scratches and dents in the washed plate-like body. Therefore, the product yield can be significantly improved, and good productivity can be secured.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a spray-type cleaning device according to an embodiment of the present invention.

FIG. 2 is a partially enlarged top view.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a partially enlarged cross-sectional view showing a spray-type cleaning device according to another embodiment.

FIG. 5 is a schematic perspective view showing a conventional spray-type cleaning device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cleaning apparatus 2 ... Conveying means 3 ... Cleaning liquid injection nozzle 4 ... Suppression injection nozzle X ... Plate object to be cleaned

Claims (5)

[Claims] 1. A spray-type cleaning apparatus for cleaning a metal plate to be cleaned, comprising: a conveying unit that supports and conveys the plate to be cleaned from below; A plurality of cleaning liquid injection nozzles arranged at predetermined intervals in the transport driving direction of the transport means so as to inject a cleaning liquid; and A spray-type cleaning device comprising: a plurality of suppression spray nozzles configured to spray a spray flow such as the above. 2. The arrangement of the inhibiting spray nozzles in the transport driving direction of the transport means is set to be small, so that the plate-like body to be cleaned is continuously suppressed by the ejecting flow of the inhibiting nozzles in the transport process. The spray-type cleaning device according to claim 1, wherein the spray-type cleaning device is attached and fixed. 3. The jet flow of water or the like jetted from the suppression jet nozzle onto the upper surface of the conveyed plate-like body to be conveyed is in continuous contact without any interruption in the conveying direction. The spray-type cleaning device according to claim 2. 4. The spray-type cleaning apparatus according to claim 1, wherein the plurality of cleaning liquid spray nozzles are provided above and below a conveying unit. 5. A spray-type cleaning method for cleaning a metal plate to be cleaned by jetting a cleaning liquid onto a metal plate to be cleaned conveyed by a conveying means, wherein the cleaning is performed on the plate to be cleaned. A spray-type cleaning method, wherein the cleaning liquid is sprayed in a state where the plate-like body to be cleaned is held down and fixed to the conveying means by a jet flow of water or the like from a suppression spray nozzle.