DE19615337A1 - Generation of cloud-free climate over vapour covering in vapour phase soldering plant - Google Patents

Generation of cloud-free climate over vapour covering in vapour phase soldering plant

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Publication number
DE19615337A1
DE19615337A1 DE1996115337 DE19615337A DE19615337A1 DE 19615337 A1 DE19615337 A1 DE 19615337A1 DE 1996115337 DE1996115337 DE 1996115337 DE 19615337 A DE19615337 A DE 19615337A DE 19615337 A1 DE19615337 A1 DE 19615337A1
Authority
DE
Germany
Prior art keywords
forced convection
vapour
covering
convection
phase soldering
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.)
Granted
Application number
DE1996115337
Other languages
German (de)
Other versions
DE19615337C2 (en
Inventor
Helmut W Leicht
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Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE1996115337 priority Critical patent/DE19615337C2/en
Publication of DE19615337A1 publication Critical patent/DE19615337A1/en
Application granted granted Critical
Publication of DE19615337C2 publication Critical patent/DE19615337C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)

Abstract

A procedure for generating a cloud-free climate above the vapour covering of a vapour phase soldering plant with forced convection above the covering, has this convection extended by a gas flow generated from a fan. The gas is either air or an inert gas and the convection is attained by a vacuum. It is managed by a heat exchanger or a droplet separator. The separated liquid is re-used in the soldering plant. The convection is adjusted so that no, or a minimal amount of, additional molecules are torn from the vapour covering. The convection is adjusted in a region between the covering and an observation device.

Description

Die Erfindung betrifft ein Verfahren zum Erzeugen eines ne­ belfreien Klimas oberhalb der Dampfdecke einer Dampfphasen­ lötanlage.The invention relates to a method for generating a ne air-free climates above the vapor ceiling of a vapor phase soldering system.

Beim Dampfphasenlöten kann es zur Nebelbildung in einem Be­ reich oberhalb der Dampfphase kommen. Die Ursachen dafür sind eingeschleppte Fremdstoffe, die Keime für das Auskon­ densieren von Molekülen aus der Dampfphase bilden. In man­ chen 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.With vapor phase soldering, it can lead to the formation of fog in a case come richly above the vapor phase. The causes of this are foreign substances that are brought in, the germs for the auskon form molecules from the vapor phase. In one cases, a thick blanket of fog forms over the Vapor phase and obscures the view of the solder. Thereby is a major advantage in vapor phase soldering, namely direct visual inspection of the soldered item, lost.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, die Nebelbildung über der Dampfdecke der Dampfphase stark einzu­ schränken und die Sicht auf das Lötgut zu gewährleisten. In contrast, the invention is based on the object Mist formation over the vapor ceiling of the vapor phase strongly limit and ensure the view of the soldered goods.  

Die Aufgabe wird mit den Merkmalen der Patentansprüche ge­ löst.The task is ge with the features of the claims solves.

Das erfindungsgemäße Verfahren sieht vor, oberhalb der Dampfdecke der Dampfphasenlötanlage eine Zwangskonvektion einzustellen. Das kann in einer erfindungsgemäßen Ausfüh­ rungsform durch ein Gebläse erfolgen. 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 Flüssig­ keitströpfchen. Diese können an geeigneten Wärmetauschern oder Tröpfchenabscheidern aus dem Volumenstrom der Zwangs­ konvektion ausgeschieden und als Flüssigkeit zur weiteren Verwendung in der Dampfphasenlötanlage zurückgeführt werden. In einer weiteren erfindungsgemäßen Ausführungsform wird die Zwangskonvektion durch Unterdruck erzeugt. Dabei wird der Nebel abgesaugt und über Wärmetauscher oder Tröpfchenab­ scheider geführt.The method according to the invention provides above the Steam ceiling of the vapor phase soldering system a forced convection adjust. This can be done in an embodiment of the invention form by a blower. Preferably the Forced convection to an area between the steam ceiling and a viewing window or an observation device (e.g. camera) to monitor the soldering process to facilitate ganges. The forced convection eliminates the Fog due to the removal of the liquid contained in it droplets. These can be connected to suitable heat exchangers or droplet separators from the volume flow of the forced convection excreted and as a liquid for further Use in the vapor phase soldering system can be traced. In a further embodiment according to the invention, the Forced convection generated by negative pressure. The Mist is suctioned off and removed via heat exchangers or droplets led by a divider.

Vorteilhafterweise wird die Zwangskonvention so eingestellt, daß durch den Volumenstrom keine oder nur wenige zusätzliche Moleküle aus der Dampfdecke herausgerissen werden.The compulsory convention is advantageously set in such a way that that no or only a few additional through the volume flow Molecules are torn out of the vapor blanket.

Der Vorteil der Erfindung liegt in der Gewährleistung einer guten Sichtkontrolle des Lötgutes und in der Vermeidung von Verlusten von Dampfphasenlötflüssigkeit durch Ausschleppen des Nebels.The advantage of the invention lies in the guarantee of a good visual inspection of the soldered goods and in avoiding Losses of vapor phase solder liquid due to dragging out of the fog.

Claims (9)

1. Verfahren zum Erzeugen eines nebelfreien Klimas oberhalb der Dampfdecke einer Dampfphasenlötanlage, wobei ober­ halb der Dampfdecke eine Zwangskonvektion eingestellt wird.1. Method for creating a fog-free climate above the steam blanket of a vapor phase soldering system, with upper forced convection was set halfway through the steam ceiling becomes. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Zwangskonvektion durch einen Gasstrom gereicht wird.2. The method according to claim 1, characterized in that forced convection is passed through a gas stream. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Gasströmung durch ein Gebläse erzeugt wird.3. The method according to claim 2, characterized in that the gas flow is generated by a blower. 4. Verfahren nach Anspruch 2 oder 3, dadurch gekennzeich­ net, daß das strömende Gas Luft oder ein Inertgas ist.4. The method according to claim 2 or 3, characterized in net that the flowing gas is air or an inert gas. 5. Verfahren nach Ansprüche 1, dadurch gekennzeichnet, daß die Zwangskonvektion durch Unterdruck erreicht wird.5. The method according to claims 1, characterized in that forced convection is achieved by negative pressure. 6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch ge­ kennzeichnet, daß die Zwangskonvektion über Wärmetau­ scher oder Tröpfchenabscheider geleitet wird.6. The method according to any one of claims 1 to 5, characterized ge indicates that forced convection via heat dew shear or droplet separator. 7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß abgeschiedene Flüssigkeit von den Wärmetauschern oder Tröpfchenabscheidern in der Dampfphasenlötanlage wieder verwendet wird.7. The method according to claim 6, characterized in that separated liquid from the heat exchangers or Droplet separators in the vapor phase soldering system again is used. 8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch ge­ kennzeichnet, daß die Zwangskonvektion so eingestellt wird, daß keine oder nur wenige zusätzliche Moleküle aus der Dampfdecke gerissen werden.8. The method according to any one of claims 1 to 7, characterized ge indicates that forced convection is set in this way is that no or only a few additional molecules the steam blanket. 9. Verfahren nach einem der Ansprüche 1 bis 8, dadurch ge­ kennzeichnet, daß die Zwangskonvektion auf einen Bereich zwischen der Dampfdecke und einer Beobachtungseinrich­ tung eingestellt wird.9. The method according to any one of claims 1 to 8, characterized ge indicates that forced convection to an area between the steam ceiling and an observation facility tion is set.
DE1996115337 1996-04-18 1996-04-18 Process for creating a fog-free climate above the vapor ceiling of a vapor phase soldering system Expired - Fee Related DE19615337C2 (en)

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 true DE19615337A1 (en) 1997-10-23
DE19615337C2 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)

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DE (1) DE19615337C2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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
DE19615337C2 (en) 1998-08-20

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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