DE19615337C2 - Process for creating a fog-free climate above the vapor ceiling of a vapor phase soldering system - Google Patents
Process for creating a fog-free climate above the vapor ceiling of a vapor phase soldering systemInfo
- Publication number
- DE19615337C2 DE19615337C2 DE1996115337 DE19615337A DE19615337C2 DE 19615337 C2 DE19615337 C2 DE 19615337C2 DE 1996115337 DE1996115337 DE 1996115337 DE 19615337 A DE19615337 A DE 19615337A DE 19615337 C2 DE19615337 C2 DE 19615337C2
- Authority
- DE
- Germany
- Prior art keywords
- vapor phase
- forced convection
- ceiling
- fog
- vapor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/012—Soldering with the use of hot gas
- B23K1/015—Vapour-condensation soldering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Erzeugen eines nebelfreien Klimas oberhalb der Dampfdecke ei ner Dampfphasenlötanlage.The invention relates to a method for generating a fog-free climate above the steam ceiling ner vapor phase soldering system.
Beim Dampfphasenlöten kann es zur Nebelbildung in einem Bereich oberhalb der Dampfphase kommen. Die Ursachen dafür sind eingeschleppte Fremdstoffe, die Keime für das Auskondensieren von Molekülen aus der Dampfphase bilden. In manchen Fällen bildet sich eine dichte Nebeldecke über der Dampfphase und verdeckt die Sicht auf das Lötgut. Dadurch geht ein wesentlicher Vorteil beim Dampfphasenlöten, nämlich die direkte Sichtkontrolle des Lötgutes, verloren.Vapor phase soldering can lead to fog formation in an area above the vapor phase. The The causes for this are foreign substances that have been brought in Germs for the condensation of molecules from the Form vapor phase. In some cases, one forms dense blanket of fog over the vapor phase and covered the view of the item to be soldered. Doing an essential one Advantage in vapor phase soldering, namely the direct one Visual inspection of the soldered item, lost.
Die US-A-4 389 797 beschreibt eine Durchlauf-Dampfphasenlöt anlage mit einer Kühleinrichtung in Form von Kühlwindungen oberhalb der Dampfdecke. Ein Gebläse ist nicht vorgesehen.US-A-4 389 797 describes continuous vapor phase soldering System with a cooling device in the form of cooling coils above the steam ceiling. A blower is not provided.
Demgegenüber liegt der Erfindung die Aufgabe zu grunde, die Nebelbildung über der Dampfdecke der Dampfphase stark einzuschränken und die Sicht auf das Lötgut zu gewährleisten.In contrast, the object of the invention reasons, the formation of fog over the steam ceiling of the Vapor phase and restrict the view of that To ensure soldered goods.
Die Aufgabe wird mit den Merkmalen der Patentan sprüche gelöst.The task is carried out with the features of the patent sayings solved.
Das erfindungsgemäße Verfahren sieht vor, oberhalb der Dampfdecke der Dampfphasenlötanlage eine Zwangskonvektion einzustellen. Das kann in einer erfin dungsgemäßen Ausführungsform durch ein Gebläse er folgen. Vorzugsweise wird die Zwangskonvektion auf einen Bereich zwischen der Dampfdecke und einem Sichtfenster oder einer Beobachtungseinrichtung (z. B. Kamera) eingestellt, um so die Beobachtung des Lötvor ganges zu erleichtern. Die Zwangskonvektion beseitigt den Nebel durch Abtransport der in ihm enthaltenen Flüssigkeitströpfchen. Diese können an geeigneten Wärmetauschern oder Tröpfchenabscheidern aus dem Volumenstrom der Zwangskonvektion ausgeschieden und als Flüssigkeit zur weiteren Verwendung in der Dampfphasenlötanlage zurückgeführt werden. In einer weiteren erfindungsgemäßen Ausführungsform wird die Zwangskonvektion durch Unterdruck erzeugt. Da bei wird der Nebel abgesaugt und über Wärmetauscher oder Tröpfchenabscheider geführt.The method according to the invention provides above the vapor blanket of the vapor phase soldering system Set forced convection. That can be invented embodiment according to the invention by a fan consequences. The forced convection is preferably on an area between the steam blanket and one Viewing window or an observation facility (e.g. Camera) so as to observe the soldering process to facilitate ganges. Forced convection eliminated the fog by removing the contained in it Liquid droplets. These can be at appropriate Heat exchangers or droplet separators from the Volumetric flow of forced convection eliminated and as a liquid for further use in the Vapor phase soldering system can be returned. In a another embodiment of the invention the forced convection generated by negative pressure. There at the mist is extracted and via heat exchangers or droplet separator.
Vorteilhafterweise wird die Zwangskonvention so eingestellt, daß durch den Volumenstrom keine oder nur wenige zusätzliche Moleküle aus der Dampfdecke her ausgerissen werden.The compulsory convention is advantageously so set that by the volume flow none or only few additional molecules from the vapor blanket be ripped out.
Der Vorteil der Erfindung liegt in der Gewährleistung einer guten Sichtkontrolle des Lötgutes und in der Ver meidung von Verlusten von Dampfphasenlötflüssigkeit durch Ausschleppen des Nebels.The advantage of the invention lies in the guarantee a good visual inspection of the soldered goods and in the ver avoid loss of vapor phase solder fluid by dragging out the fog.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996115337 DE19615337C2 (en) | 1996-04-18 | 1996-04-18 | Process for creating a fog-free climate above the vapor ceiling of a vapor phase soldering system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996115337 DE19615337C2 (en) | 1996-04-18 | 1996-04-18 | Process for creating a fog-free climate above the vapor ceiling of a vapor phase soldering system |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19615337A1 DE19615337A1 (en) | 1997-10-23 |
DE19615337C2 true DE19615337C2 (en) | 1998-08-20 |
Family
ID=7791648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1996115337 Expired - Fee Related DE19615337C2 (en) | 1996-04-18 | 1996-04-18 | Process for creating a fog-free climate above the vapor ceiling of a vapor phase soldering system |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19615337C2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4389797A (en) * | 1981-06-23 | 1983-06-28 | The Htc Corporation | Continuous vapor processing system |
EP0138707A1 (en) * | 1983-10-11 | 1985-04-24 | Piezo-Ceram Electronique | Machine for heating an article or product by vapour condensation thereon |
-
1996
- 1996-04-18 DE DE1996115337 patent/DE19615337C2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4389797A (en) * | 1981-06-23 | 1983-06-28 | The Htc Corporation | Continuous vapor processing system |
EP0138707A1 (en) * | 1983-10-11 | 1985-04-24 | Piezo-Ceram Electronique | Machine for heating an article or product by vapour condensation thereon |
Also Published As
Publication number | Publication date |
---|---|
DE19615337A1 (en) | 1997-10-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20141101 |