CN111451599B - Preheating runner structure - Google Patents
Preheating runner structure Download PDFInfo
- Publication number
- CN111451599B CN111451599B CN202010380191.4A CN202010380191A CN111451599B CN 111451599 B CN111451599 B CN 111451599B CN 202010380191 A CN202010380191 A CN 202010380191A CN 111451599 B CN111451599 B CN 111451599B
- Authority
- CN
- China
- Prior art keywords
- gas flow
- inner ring
- flow passage
- air
- chamber
- 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.)
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Links
- 238000009423 ventilation Methods 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 description 11
- 238000005476 soldering Methods 0.000 description 10
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005219 brazing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/085—Cooling, heat sink or heat shielding means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses a preheating flow passage structure, which comprises: two gas flow passages axially sleeved and assembled; the outer ring gas flow passage comprises an independent: a hot gas flow chamber, a ventilation chamber; the upper port of the inner ring gas flow passage is buried at the lower side of the top hole of the hot air flow chamber; a cover plate for covering the fit gap is arranged between the top plate of the hot air flow chamber and the upper port of the inner ring air flow passage; gaskets which are mutually spaced are arranged between the cover plate and the annular flaring in the upper port of the inner ring gas flow passage for assembly; the upper port of the inner ring gas flow passage overlapped in the hot gas flow chamber comprises a sleeve part; the cover plate is overlapped with the sleeve piece and the annular flaring to form closed fit for avoiding the overflow of air flow, and the corner of the cover plate forms a cambered surface which is downwards covered; the hot air flow chamber is connected with an air heater and a ventilator; the ventilation chamber comprises: an air inlet regulated by the air inlet controller and an air outlet regulated by the throttle valve; a detachable collecting container is arranged on the lower port of the inner ring gas flow passage.
Description
Technical Field
The invention relates to the field of welding equipment structures, in particular to a preheating runner structure.
Background
After the soldering paste is heated and melted, part of the soldering flux in the soldering paste forms steam, and most of the soldering flux steam is pumped away from the hearth from the exhaust port; since flux vapors are easily condensed on relatively low temperature surfaces, there is little flux to liquefy and adhere to the suction port wall. The current exhaust system used in reflow ovens is direct exhaust, when liquid soldering flux is accumulated to a certain extent, liquid drops are formed and finally drop down, and the probability of dropping down on equipment is high, so that the working environment is affected.
Disclosure of Invention
The invention aims at: the preheating flow channel structure solves the problem of heating and drying the soldering flux in the welding process, and can recycle the volatilized soldering flux in a gas condensation mode.
The technical scheme of the invention is as follows: a preheat flow path structure comprising: air heater, ventilation blower, preheat module. The ventilator compresses air, the ventilator is connected to the air heater through the air flue, and the air heater is communicated with the preheating module again.
The preheating module comprises an outer body and a central piece, wherein the outer body and the central piece are hollow structures, and the central piece is sleeved in the outer body. The center piece serves as one gas flow path while the outer body outside the center piece serves as the other gas flow path.
Specifically, the outer body may be divided into an upper portion and a lower portion, that is, the outer ring gas flow passage includes: a hot air flow chamber and a ventilation chamber. The upper side is a sealed hot air flow chamber, and the lower side is a ventilation chamber for ventilation. The hot air flow chamber may be continuously supplied with heated air while the ventilation chamber may provide a cold air flow for condensation.
The center piece is in a straight cylinder shape penetrating through, so that the inner ring gas flow passage comprises an upper non-closed port and a lower non-closed port. The upper port of the center piece corresponds to the top hole on the top plate of the hot air flow chamber, and the lower port of the center piece corresponds to the lower port of the ventilation chamber.
A flange aperture is formed in the hot gas flow chamber for coaxially assembling the center piece, the upper port of the center piece is mounted with the flange aperture by fasteners, and hot air in the hot gas flow chamber continuously heats the workpiece in the upper port of the center piece.
The upper port of the central piece is sunk in the lower side of the top hole of the hot air flow chamber, and an annular flaring is arranged in the upper port of the central piece. A sleeve piece inserted with the shaft end of the workpiece is suspended in the annular flaring, the upper end of the sleeve piece is opened, and the lower end of the sleeve piece is closed; the radial surface of the upper port of the sleeve member is provided with connecting ribs for suspending the sleeve member support in the upper port of the inner ring gas flow passage.
The annular flaring corresponds to a top hole on the top plate of the hot air flow chamber, and a cover plate is arranged between the top plate and the annular flaring. The apron can cover the fit clearance, and apron and overlap joint of overlap, annular flaring of sleeve spare form the sealed cooperation that avoids the air current to overflow simultaneously, and the corner of apron forms the cambered surface of downwardly directed, and the cambered surface design can the upwards dissipation of effectual wall steam.
The cover plate and the annular flaring are in sealing fit through gaskets which are mutually spaced, and the cover plate, the gaskets and the annular flaring are sequentially contacted and connected and fastened. The hot gas flow can thus flow into the annular flare, the center piece, in the spacer space between the cover plate and the annular flare.
The hot air flow chamber is connected with an air heater and a ventilator, and meanwhile, a pilot type temperature controller is arranged in the hot air flow chamber.
The ventilation chamber comprises: an air inlet regulated by the air inlet controller and an air outlet regulated by the throttle valve. The air inlet is a strip-shaped air hole formed in the rotation surface of the outer body, the air outlet is externally connected with a suction device, and meanwhile, the air flow speed is regulated through a throttle valve.
In order to monitor the air flow speed in real time and provide air flow adjusting capability, flow sensors are arranged at the air inlet and the air outlet to sense the air speed.
A detachable collecting container is arranged on the lower port of the inner ring gas flow passage, and the collecting container is a hemispherical container supported at the lower end of the central piece. Meanwhile, the lower end of the outer body is provided with a detachable connecting piece, and the connecting piece is arranged on the surface of the outer body through a screw. The screw holes at the bottom of the connecting pieces are provided with bolts which are screwed upwards and are connected with and used for supporting the collecting container.
The invention has the advantages that: the flux on the surface of the workpiece is cooled through the double-runner condensation structure, and meanwhile, the air flow control is matched, so that the air flow is ensured not to escape to the workpiece, and the other surfaces of the workpiece are prevented from being polluted. And the condensed soldering flux can be collected and treated, so that the operation is convenient.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a perspective view of a preheat flow path structure;
FIG. 2 is a cross-sectional view of a preheat flow path structure;
FIG. 3 is an enlarged view of a portion of the structure of FIG. 2;
Wherein: 1. an air heater; 2. a center piece; 3. a hot gas flow chamber; 4. a ventilation chamber; 5. annular flaring; 6. a sleeve member; 7. a cover plate; 8. a gasket; 9. strip-shaped air holes; 10. a collection container; 11. a connecting piece; 12. and (5) a bolt.
Detailed Description
Preferred embodiments of the invention:
a preheating flow passage structure is arranged between a soldering flux module and a brazing module. The air heater comprises two preheating modules which are symmetrically arranged, wherein each preheating module is in butt joint with an air heater 1 and a high-pressure ventilator. The ventilator is connected to the air heater through an air passage, and the air heater 1 is in communication with the preheating module.
The preheating module comprises an outer body and a central piece 2, wherein the outer body and the central piece 2 are of hollow structures, and the central piece 2 is sleeved in the outer body. The central member 2 serves as one gas flow path while the outer body outside the central member 2 serves as the other gas flow path.
Specifically, the outer body may be divided into an upper portion and a lower portion, that is, the outer ring gas flow passage includes: a hot air flow chamber 3 and a ventilation chamber 4. The upper side is a closed hot air flow chamber 3, and the lower side is a ventilation chamber 4 for ventilation. The hot air flow chamber 3 may be continuously supplied with heated air, while the ventilation chamber 4 may provide a cold air flow for condensation. An outer shell plate is arranged outside the hot gas flow chamber 3.
The central member 2 is in the shape of a straight tube passing therethrough, and therefore, the inner ring gas flow passage includes upper and lower non-closed ports. The upper port of the central piece 2 corresponds to the top hole in the top plate of the hot gas flow chamber 3 and the lower port of the central piece 2 corresponds to the lower port of the ventilation chamber 4.
A flange aperture for coaxially assembling the center member is formed in the hot air flow chamber 3, the upper port of the center member 2 is mounted with the flange aperture by a fastener, and the hot air in the hot air flow chamber 3 continuously heats the work piece in the upper port of the center member 2.
The upper port of the central piece 2 is buried under the top hole of the hot air flow chamber 3, and an annular flaring 5 is arranged in the upper port of the central piece 2. The annular flaring 5 is internally suspended with a sleeve member 6 for inserting the shaft end of a workpiece, in this embodiment, the processed workpiece is a motor rotor, the shaft end of the rotating shaft is inserted into the sleeve member to preheat soldering flux, and the connecting ribs extend out of the sleeve member 6 in the radial direction and are used for supporting and suspending the sleeve member in the upper port of the inner ring gas flow channel.
The annular flaring 5 corresponds to a top hole on the top plate of the hot air flow chamber 3, and a cover plate 7 is arranged between the top plate and the annular flaring 5. The cover plate 7 can cover the fit clearance, and simultaneously the overlap joint of the cover plate 7 and the flash of the sleeve member 6 and the annular flaring 5 forms a closed fit for avoiding the air flow overflow, and the corner of the cover plate 7 forms a cambered surface which is downwards covered, and the cambered surface design can effectively dissipate wall hot air upwards.
The cover plate 7 and the annular flaring 6 are in sealing fit through gaskets 8 which are mutually spaced, and the cover plate 7, the gaskets 8 and the annular flaring 6 are sequentially contacted and connected and fastened. The hot gas flow can thus flow into the annular flare 6, the central piece 2 in the spacer 8 space between the cover plate 7 and the annular flare 6.
The hot air flow chamber 3 is connected with the air heater 1 and the ventilator, and meanwhile, a pilot type temperature controller is arranged in the hot air flow chamber 3.
The ventilation chamber 4 includes: an air inlet regulated by the air inlet controller and an air outlet regulated by the throttle valve. The air inlet is a strip-shaped air hole 9 formed on the rotation surface of the outer body, the air outlet is externally connected with a suction device, and the air flow speed is regulated through a throttle valve.
A detachable collecting container 10 is arranged on the lower port of the inner ring gas flow passage, and the collecting container 10 is a hemispherical container supported at the lower end of the center piece 2. Meanwhile, the lower end of the outer body is provided with a detachable U-shaped connecting piece 11, and the connecting piece is arranged on the surface of the outer body through screws. The bottom screw hole of the connection member 11 is fitted with a bolt 12 screwed upward, and the bolt 12 connects and supports the collection container 10.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations which can be accomplished by persons skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the appended claims.
Claims (5)
1. A preheat flow path structure comprising: an air heater, a ventilator, and a preheating module; the method is characterized in that: the preheating module includes: two gas flow passages axially nested together; the outer ring gas flow passage comprises an independent: a closed hot air flow chamber at the upper side and a ventilation chamber at the lower side; the inner ring gas flow passage comprises an upper non-closed port and a lower non-closed port;
The upper port of the inner ring gas flow passage is sunk and buried at the lower side of the top hole of the hot gas flow chamber; a cover plate for covering the fit gap is arranged between the top plate of the hot air flow chamber and the upper port of the inner ring air flow passage; gaskets which are mutually spaced are arranged between the cover plate and the annular flaring in the upper port of the inner ring gas flow passage for assembly;
the sleeve piece is sleeved in the upper port of the inner ring gas flow passage in the hot gas flow cavity and comprises a shaft end for inserting and placing a workpiece; the sleeve piece comprises connecting ribs which extend out in the radial direction and are used for supporting and suspending the sleeve piece in the upper port of the inner ring gas flow passage;
the cover plate is overlapped with the sleeve piece and the annular flaring to form closed fit for avoiding air flow overflow, and the corner of the cover plate forms a downward covered cambered surface;
the hot air flow chamber is connected with the air heater and the ventilator; the ventilation chamber comprises: an air inlet regulated by the air inlet controller and an air outlet regulated by the throttle valve;
A detachable collecting container is arranged on the lower port of the inner ring gas flow passage;
The preheating module comprises a central piece which is sleeved in the outer body; the outer body of the outer ring and the central piece of the inner ring can both form the gas flow channel; the hot gas flow chamber comprises a flange orifice for coaxially assembling the central piece;
The annular flaring is assembled in the upper port of the center piece; the cover plate, the gasket and the annular flaring are sequentially contacted and connected and fastened;
a pilot type temperature controller is arranged in the hot air flow chamber;
flow sensors are arranged at the air inlet and the air outlet.
2. A preheat flow path structure in accordance with claim 1, wherein: the air inlet is a strip-shaped air hole formed on the rotation surface of the outer body.
3. A preheat flow path structure in accordance with claim 1, wherein: the collection container is a hemispherical container supported at the lower end of the centerpiece.
4. A preheat flow path structure in accordance with claim 2, wherein: the lower end of the outer body is provided with a detachable connecting piece; the connecting piece is arranged on the surface of the outer body through a screw; a bolt which is screwed up is assembled in the bottom screw hole of the connecting piece; the bolt connects and supports the collection container.
5. A preheat flow path structure in accordance with claim 1, wherein: an outer shell plate is arranged outside the hot air flow chamber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010380191.4A CN111451599B (en) | 2020-05-08 | 2020-05-08 | Preheating runner structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010380191.4A CN111451599B (en) | 2020-05-08 | 2020-05-08 | Preheating runner structure |
Publications (2)
Publication Number | Publication Date |
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CN111451599A CN111451599A (en) | 2020-07-28 |
CN111451599B true CN111451599B (en) | 2024-09-10 |
Family
ID=71672866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202010380191.4A Active CN111451599B (en) | 2020-05-08 | 2020-05-08 | Preheating runner structure |
Country Status (1)
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CN (1) | CN111451599B (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN212470110U (en) * | 2020-05-08 | 2021-02-05 | 苏州凌创电子系统有限公司 | Preheating flow passage structure |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5193735A (en) * | 1992-07-13 | 1993-03-16 | Knight Electronics, Inc. | Solder reflow oven |
JP4902487B2 (en) * | 2007-10-17 | 2012-03-21 | 株式会社タムラ製作所 | Reflow device, flux recovery device, and flux recovery method |
CN108237297A (en) * | 2016-12-26 | 2018-07-03 | 上海朗仕电子设备有限公司 | A kind of cooling water monitoring of leakage device of watercooled reflux brazier |
JP7241286B2 (en) * | 2018-06-27 | 2023-03-17 | パナソニックIpマネジメント株式会社 | Reflow oven and soldering method |
CN110405310A (en) * | 2019-07-30 | 2019-11-05 | 深圳市浩宝技术有限公司 | A kind of recyclable device and recovery system |
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2020
- 2020-05-08 CN CN202010380191.4A patent/CN111451599B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN212470110U (en) * | 2020-05-08 | 2021-02-05 | 苏州凌创电子系统有限公司 | Preheating flow passage structure |
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