WO2005085734A1 - リフロー炉から発生する排気ガスの冷却、及び清浄処理の付設装置 - Google Patents
リフロー炉から発生する排気ガスの冷却、及び清浄処理の付設装置 Download PDFInfo
- Publication number
- WO2005085734A1 WO2005085734A1 PCT/JP2005/003219 JP2005003219W WO2005085734A1 WO 2005085734 A1 WO2005085734 A1 WO 2005085734A1 JP 2005003219 W JP2005003219 W JP 2005003219W WO 2005085734 A1 WO2005085734 A1 WO 2005085734A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- cooling
- exhaust gas
- flux
- heating
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/024—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by impinging the gas to be cleaned essentially in a perpendicular direction onto the liquid surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
Definitions
- the exhaust gas of a reflow furnace used for soldering electronic components is controlled by seven orders and is clean.
- the riff-open-furnace solders electronic components to a printed circuit board by mounting electronic components on a substrate coated with solder paste and heating the printed circuit board in the furnace.
- the solder paste has a viscosity suitable for printing and discharging by kneading the flux and powdered solder.
- This solder paste is printed on the soldering part of the printed circuit board, and the plunger of the syringe is pressed with compressed air. And by applying it to the soldering part.
- the hot gas (heat II) generated from every day is circulated, but the volatile matter of the flux generated when the cream solder applied to the substrate is heated is determined by the inlet and outlet of the conveyor. Is connected to the outside, so there is inevitable leakage of hot gas (heat fi) and volatile gas due to heating of the flux, and heat radiation from the cover of the furnace body.
- the working environment is degraded by hot air indoors.
- Such heat, hot gas (heat) ⁇ ⁇ , and volatile gas exhaust gas due to heating of the flux were guided outside by ducts and discharged, but the work of arranging the exhaust duct requires time and effort. There was a problem.
- the present invention has been made in order to solve the conventional problems described above, and it is an object of the present invention to provide an exhaust gas cooling / cleaning device in a single furnace at a riff opening to indoors. Another object of the present invention is to provide an exhaust gas cooling and purifying apparatus which enables exhaust to be performed without affecting the working environment and enables stable operation for a long time without replenishing cooling water.
- the apparatus uses an exhaust duct for discharging hot gas (hot air) and volatile gas by heating the flux, and a cooling liquid. Cooling of exhaust gas, comprising: a storage tank for storing, and a blower for injecting hot gas (hot air) from the exhaust duct and volatile gas generated by heating the flux onto the cooling liquid surface by applying pressure to the cooling liquid surface. Clean processing equipment.
- the injection port for hot gas from the exhaust duct according to claim 3 wherein the injection port is arranged in proximity to the coolant level, and the injection port is arranged in a state of being floated on the liquid level by a float, and the coolant level changes.
- the exhaust gas cooling and cleaning apparatus according to any one of claims 1 to 2 wherein the injection port on the float moves up and down according to the pressure, and the distance between the liquid surface and the injection port is kept constant.
- FIG. 1 is a schematic diagram of an exhaust gas cooling / cleaning treatment device
- FIG. 2 is a schematic diagram of an exhaust gas cooling / cleaning device integrated with a reflow furnace
- FIG. 3 is a storage tank
- 4 is a plan view of the storage tank and the injection unit
- FIG. 5 is an exploded perspective view of the injection unit
- FIG. 6 shows a mounted state of the storage tank.
- FIG. 7 is a schematic diagram
- FIG. 7 is a schematic diagram of a reflow furnace.
- FIG. 7 is a side view schematically showing a structure of a conventionally known reflow furnace.
- a reflow furnace 1 includes a chain conveyor for transporting an electronic component mounting board 5 into a main body of the reflow furnace 1.
- the upper conveyor 3 is provided along the chain conveyor 2 and the lower conveyor 4 is arranged opposite to the chain conveyor 2.
- the electronic component mounting board 5 conveyed into the main body is sequentially heated by the upper heater and the lower heaters 4-4 to melt the solder on the reflow surface and solder the electronic component to the board.
- the board transfer conveyor 2 is a mechanism in which the control system transfers the board from the left side to the right side in the figure in a certain dimensional unit.
- the furnaces are set in several stages, for example, preheating and main heating processes are set.
- the hot gas (heat) generated from the heater 3 is circulated in the furnace while being blown downward from above by a circulating device (not shown) to heat the printed circuit board.
- the substrate passes through the heating section by a constant-speed feed mechanism in such a reflow furnace. When this is done, the solder paste melts and the board and the electronic components are soldered.
- a device for cooling and purifying a hot gas (the volatile gas by heating the heat 10 and the flux) is provided.
- the exhaust gas cooling and cleaning apparatus schematically shows the present invention, and as shown in FIG. 1, from the main body of the reflow furnace 1, the exhaust duct 17 is connected to the cooling water storage tank 8. It is prolonged.
- FIG. 2 shows a configuration in which a cooling liquid storage tank 8 is integrated into the main body of the reflow furnace 1.
- heat gas heat S
- flux generated from heating furnace After being collected by the volatile gas exhaust duct 17, pressure is applied by a blower 19 to be injected from an injection port 10.
- a cooling liquid is stored in the storage tank 8, and a hot gas (hot air) from the injection port 10 and a volatile gas due to heating of the flux are injected onto the cooling liquid surface.
- a hot gas hot air
- the cooling water is blown up by the pressure of the injection gas, and water 11 is generated in the space inside the storage tank 8.
- the splash 11 is reflected by the receiving plate 12 of the storage tank 8 and convects in the storage tank. .
- the receiving plate 12 is disposed so as to cover substantially the entire upper surface of the storage tank 8, and a slight gap 13 is formed at an end portion.
- Hot gas Heat a and volatile gas generated by heating of the flux are cooled by contact with mist-like water droplets and then exhausted through the gap 13 at the end of the receiving plate 12.
- Floats 14 and 15 are arranged on both sides of the injection port 10 so that they float above the coolant level. Even if the water level decreases, the injection port 10 descends as the water level decreases. The distance between the injection port 10 and the liquid surface is always kept constant.
- a 7th position sensor 16 is arranged to detect a decrease in the water level due to evaporation, and when the water level falls below a predetermined level, the sensor 16 detects the water supply cock and opens the water supply cock 18 or the water pipe. Top up with water.
- a second embodiment shows a specific configuration of the present invention.
- the exhaust gas cooling and cleaning apparatus includes an exhaust duct 17 provided at an inlet portion and an outlet portion of a riff opening-furnace 1, and an exhaust duct 17.
- the main components are a part 20, left and right floats 14 and 15 for holding the injection part 20 floating above the coolant, and a storage tank 8 for storing the coolant.
- the storage tank 8 has a bottom surface and side surfaces, is a box-shaped member made of corrosion-resistant gold such as aluminum or stainless steel, and has a window on one side surface of the storage tank for confirming a water level of the coolant. 2 1 are provided.
- the upper surface of the storage tank 8 is open, and the injection unit 20 is inserted from the opening.
- the number, shape, and size of the storage tanks 8 are not particularly limited, but in the present embodiment, two storage tanks are provided per one riff opening furnace (see FIG. 6).
- the injection unit 20 is a nozzle that injects a hot gas (heat M) and a volatile gas by heating the flux, and is connected to a duct 17 inserted from the upper side of the storage tank 8, and a duct 17
- the hot gas from the furnace (the volatile gas generated by heating the heat and the flux is injected vertically onto the coolant surface.
- the exhaust gas extended from the reflow furnace 1 A connection 22 of the duct 17 is formed, and a diameter-enlarged portion 23 expands in a square shape downwardly from the connection port 22 in a trumpet shape, and a dispersion plate 24 is disposed at an outlet (injection port 10).
- the dispersing plate 24 is for dispersing the hot gas (heat) and the volatile gas generated by the heating of the flux on the liquid surface, and has a large number of small holes 25.
- the jet part 20 has floats 14 and 15 on the left side, and these floats 14 and 15 have buoyancy to float the central jet part 20. Due to this float, the injection part 20 is in a state of floating above the coolant level .. ⁇ The injection part 20 is located at the center between the floats and is held on the left and right sides. Floats on water. Arms 26 extend to the left and right of the injection unit 20, and a mouth is fixed to the arm 26. In the present embodiment, two resin containers are provided on the left and right sides, for a total of four resin containers.
- the floats 14 and 15 are constituted by hollow resin containers, and these resin containers are held in a state where the injection port 10 is close to the water surface while floating on the liquid surface.
- the distance between the water surface and the injection port 10 is appropriately set according to the processing capacity of the apparatus. In this embodiment, the distance between the water surface and the injection port is l to 2 cm.
- the injection unit 20 and the floats 14 and 15 are integrated, and are housed inside the storage tank 8 both vertically and horizontally, and rise and fall horizontally in the storage tank according to the water level. As described above, since the injection port 10 is floated by the float, the distance between the injection port 10 and the liquid level is always kept constant even if the cooling liquid decreases with the operation of the apparatus.
- a receiving plate 27 for catching the splash generated during the operation of the device is arranged.
- the receiving plate 27 has a small hole 28 formed over the front surface to prevent the mist-like cooling liquid from being discharged to the outside, and allows only the cooling gas to pass through.
- the configuration of the receiving plate 27 similarly to the receiving plate 12 of the first embodiment, a configuration in which a passage gap is formed at the end of the plate may be adopted. It may be configured to pass through. The operation of the present embodiment will be described.
- the board on which the printed circuit board 5 is coated with the solder paste and the electronic components are mounted is placed on a conveyor of a reflow furnace and passes through the heating furnace.
- the furnace In the heating furnace, the furnace is set in several stages, and each furnace irradiates the printed board with hot gas (heat JS) and circulates the irradiated hot gas (heat).
- an exhaust duct 17 is disposed above the inlet 6 and the outlet 7 of the single-furnace furnace 1.
- the exhaust duct 17 collects hot gas (heat fl) at the inlet and outlet of the conveyor and volatile gas generated by the heating of the flux, and volatilizes the heated gas (hot air) and the heated flux.
- the reactive gas is injected from the injection port 10 by applying pressure by the blower 19.
- the hot gas (hot air) from the injection port 10 and the volatile gas due to the heating of the flux are diffused by the enlarged diameter portion 23 and the dispersion plate 24 and are injected onto the facing cooling liquid to be cooled.
- the spray pressure S is generated by the injection pressure of the volatile gas due to the heating of the hot gas (heat) and the flux, and the hot gas (the volatile gas due to the heating of the heat and the flux comes into contact with the atomized water droplets).
- volatile gas, etc., due to the heating of the flux is absorbed by the cooling liquid and exerts a cleaning effect.
- the coolant gradually evaporates and decreases, but as the water level decreases, the connection port 22 slides or extends, while the injection port 10 descends, and the distance between the injection port 10 and the liquid level is always constant. Will be kept.
- the gas after cooling is released outside the reflow furnace, but because it is cooled, it does not affect the working environment even inside the building.
- the cooling effect can be adjusted by controlling the injection pressure of the probe.
- the specific configuration of the present invention is not limited to the above-described embodiments, and even if there is a design change or the like within a range not departing from the gist of the present invention, for example,
- the power described for the reflow furnace is included in the present invention even when it is used in another heating furnace.
- the configuration is such that the hot gas (heat) and the volatile gas due to the heating of the flux are made to collide with the dispersion plate 24 and are ejected. Can also be changed.
- Installation lines using furnaces and reflow furnaces eliminate the need for installation of exhaust ducts by installing new machines, changing the layout of existing machines, and relocating to another factory, thus reducing construction costs.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Tunnel Furnaces (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05710750A EP1722180A4 (en) | 2004-03-05 | 2005-02-14 | FASTENING DEVICE FOR COOLING AND CLEANING PROCEDURES FOR EXHAUST GASES PRODUCED FROM A MIXING OVEN |
US10/590,017 US20070181638A1 (en) | 2004-03-05 | 2005-02-14 | Apparatus for cooling and cleaning emission gas generated from reflow furnace |
JP2006510657A JPWO2005085734A1 (ja) | 2004-03-05 | 2005-02-14 | リフロー炉から発生する排気ガスの冷却、及び清浄処理の付設装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004061725 | 2004-03-05 | ||
JP2004-061725 | 2004-03-05 | ||
JP2004330929 | 2004-11-15 | ||
JP2004-330929 | 2004-11-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005085734A1 true WO2005085734A1 (ja) | 2005-09-15 |
Family
ID=34921695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/003219 WO2005085734A1 (ja) | 2004-03-05 | 2005-02-14 | リフロー炉から発生する排気ガスの冷却、及び清浄処理の付設装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20070181638A1 (ja) |
EP (1) | EP1722180A4 (ja) |
JP (1) | JPWO2005085734A1 (ja) |
KR (1) | KR100795385B1 (ja) |
WO (1) | WO2005085734A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2519423C1 (ru) * | 2012-12-26 | 2014-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный авиационный технический университет" | Гидродинамический пылеуловитель |
US10406473B2 (en) * | 2016-06-01 | 2019-09-10 | Toyota Motor Engineering & Manufacturing North America, Inc. | Exhaust unit |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5082422A (ja) * | 1973-11-26 | 1975-07-03 | ||
JPH0533630A (ja) * | 1991-07-16 | 1993-02-09 | Kosho Ri | 排気清浄器 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2195276A (en) * | 1937-02-20 | 1940-03-26 | Edward F Hennessy | Means for purifying the gases of the exhausted products of combustion of internal combustion engines |
GB1377752A (en) * | 1971-03-18 | 1974-12-18 | Oxy Dry Int Ltd | Method and device for removing particles from a gaseous stream |
US4793835A (en) * | 1988-03-21 | 1988-12-27 | Roland Rylander | Device for filtering and/or moistening a stream of air |
US4851016A (en) * | 1988-03-21 | 1989-07-25 | Roland Rylander | Device for filtering a stream of air |
JPH04262863A (ja) * | 1991-02-18 | 1992-09-18 | Nippondenso Co Ltd | 無酸化はんだ付け炉用洗浄装置 |
US6361698B1 (en) * | 1998-10-13 | 2002-03-26 | Paul Ling Tai | Industrial lagoon treatment |
JP3844941B2 (ja) * | 2000-03-30 | 2006-11-15 | 株式会社神戸製鋼所 | 調温装置および高温排ガスの調温方法 |
JP2002166126A (ja) * | 2000-12-04 | 2002-06-11 | Sumitomo Seika Chem Co Ltd | 燃焼排ガスの処理装置 |
-
2005
- 2005-02-14 KR KR1020067018878A patent/KR100795385B1/ko not_active IP Right Cessation
- 2005-02-14 US US10/590,017 patent/US20070181638A1/en not_active Abandoned
- 2005-02-14 WO PCT/JP2005/003219 patent/WO2005085734A1/ja active Application Filing
- 2005-02-14 JP JP2006510657A patent/JPWO2005085734A1/ja active Pending
- 2005-02-14 EP EP05710750A patent/EP1722180A4/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5082422A (ja) * | 1973-11-26 | 1975-07-03 | ||
JPH0533630A (ja) * | 1991-07-16 | 1993-02-09 | Kosho Ri | 排気清浄器 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1722180A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1722180A4 (en) | 2008-01-23 |
KR20060116865A (ko) | 2006-11-15 |
JPWO2005085734A1 (ja) | 2008-01-24 |
KR100795385B1 (ko) | 2008-01-17 |
US20070181638A1 (en) | 2007-08-09 |
EP1722180A1 (en) | 2006-11-15 |
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