CN213245079U

CN213245079U - Reflow furnace for processing PCB (printed circuit board) with hot air flowing back

Info

Publication number: CN213245079U
Application number: CN202021465891.5U
Authority: CN
Inventors: 李随群
Original assignee: Hangzhou Zhongjie Electronic Technology Co ltd
Current assignee: Hangzhou Zhongjie Electronic Technology Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-05-21
Anticipated expiration: 2030-07-23

Abstract

The utility model discloses a reflow oven is used in processing of PCB board of hot-blast backward flow relates to power electronic technology field, including the reflow oven, the bottom welding of reflow oven has the landing leg, the bottom of reflow oven is placed through the landing leg level, it has the pipeline to peg graft at the top of reflow oven, the hot-blast reflux unit of pipeline fixedly connected with is passed through at the top of reflow oven, just hot-blast reflux unit's inside include catalytic combustion case, clarifier and heat exchanger, heat exchanger's outer wall is pegged graft through the outer wall of pipeline with the catalytic combustion case. This reflow oven is used in processing of PCB board of hot-blast backward flow, two air pumps adopt the volute appearance, absorb the effectual of waste gas, and are very durable, have carried out purification filtration to the waste gas of inside earlier, arrange back again after the last heating, reduce thermal consumption, alarm device detects inside exhaust gas concentration, in case concentration reaches dangerous value or high temperature, can carry out the alarm notification through siren and warning light, detect constantly, prevent the accident.

Description

Reflow furnace for processing PCB (printed circuit board) with hot air flowing back

Technical Field

The utility model relates to a power electronic technology field specifically is a reflow oven is used in processing of PCB board of hot-blast backward flow.

Background

Because the electronic product board is continuously miniaturized, the sheet element appears, the traditional welding method can not adapt to the requirement, firstly, the reflow soldering process is adopted in the assembly of the hybrid integrated circuit board, the most of the assembled and welded elements are the sheet capacitor, the sheet inductor, the surface-mounted transistor, the diode and the like, along with the development of the surface assembly technology, the appearance of various surface-mounted elements and surface-mounted devices, the reflow soldering process technology and equipment which are part of the surface-mounted technology are correspondingly developed, the application of the reflow soldering process technology and equipment is wide, and the reflow soldering process technology and equipment are almost applied to all electronic product fields; the reflow soldering process comprises the following steps: the method comprises the steps of firstly printing solder paste on a pad of a surface mount device of a board, then pasting the solder paste on the pad printed with the solder paste in advance through an automatic chip mounter, finally passing through a reflow furnace, gradually heating in the reflow furnace to melt the solder paste, namely reflow, and then cooling the board, solidifying soldering tin and firmly connecting a component and the pad together.

The current equipment has poor hot air backflow effect and is not provided with an alarm function.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a reflow oven is used in processing of PCB board of hot-blast backward flow possesses the advantage of hot-blast backward flow and alarm to solve the problem that proposes among the above-mentioned background art.

The utility model discloses a solve above-mentioned technical problem, provide following technical scheme: a reflow oven for processing a PCB with hot air reflow comprises a reflow oven, wherein supporting legs are welded at the bottom of the reflow oven, the bottom of the reflow oven is horizontally arranged through supporting legs, the top of the reflow oven is inserted with a pipeline, the top of the reflow oven is fixedly connected with a hot air reflux device through the pipeline, the inside of the hot air reflux device comprises a catalytic combustion box, a purifier and a heat exchanger, the outer wall of the heat exchanger is inserted with the outer wall of the catalytic combustion box through a pipeline, the outer wall of the catalytic combustion box is inserted with the outer wall of the purifier through a pipeline, the front side of the reflow oven is fixedly connected with an alarm device, and the inside of the alarm device comprises a toxic gas detector, a combustible gas detector and a temperature detector, the outer wall of the toxic gas detector is electrically connected with the outer wall of the combustible gas detector, and the outer wall of the temperature detector is electrically connected with the outer wall of the combustible gas detector.

Further, the front of reflow oven is provided with the warning light, the right-hand member that the warning light was kept away from in the front of reflow oven is provided with the siren, the outer wall of warning light and the outer wall electric connection of siren.

Through adopting above-mentioned technical scheme, the warning light is met and is carried out the scintillation under the condition.

Furthermore, a first air pump is inserted into the top of the reflow oven, and a second air pump is inserted into the right end of the top of the reflow oven, which is far away from the first air pump.

Through adopting above-mentioned technical scheme, the air pump is bled.

Furthermore, the top of the reflow oven is fixedly connected with a support, and the top of the support is welded with the outer wall of the catalytic combustion box.

Through adopting above-mentioned technical scheme, catalytic combustion case can air-purifying.

Furthermore, the inside of the catalytic combustion box comprises a burner and a combustion chamber, and the outer wall of the burner is inserted into the outer wall of the combustion chamber.

Further, the right side fixedly connected with catalyst of nozzle, the inside of catalytic combustion case is provided with the activated carbon layer, the front of catalytic combustion case is articulated and closely cooperates there is flip.

By adopting the technical scheme, the catalyst can be replaced by opening the turnover cover.

Compared with the prior art, this reflow oven is used in PCB board processing of hot-blast backward flow possesses following beneficial effect:

1. the utility model discloses a reflow oven passes through the landing leg and places on ground, at reflow oven during operation, first air pump and the inside waste gas of second air pump extraction among the hot-blast reflux unit, two air pumps adopt the volute appearance, absorb waste gas effectual, it is very durable, in sending catalytic combustion case through the pipeline, nozzle and catalyst on the combustion chamber purify, the clarifier purifies once more, the flue gas heats through heat exchanger after purifying, in the reflow oven is arranged again, the waste gas of inside has been purified and has been filtered, arrange again after heating at last, reduce thermal consumption.

2. The utility model discloses a poisonous gas detector and combustible gas detector among the alarm device detect inside exhaust gas concentration, in case concentration reaches dangerous value or thermodetector detects the high temperature, can carry out the alarm through siren and warning light and inform, detect constantly, prevent that the accident from appearing.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a right side perspective view of the structure of the present invention;

fig. 3 is a partial sectional view of the structure of the present invention.

In the figure: 1. a reflow furnace; 2. a hot air reflux device; 3. an alarm device; 4. a support leg; 5. a toxic gas detector; 6. a combustible gas detector; 7. a temperature detector; 8. a support; 9. a catalytic combustion chamber; 10. a purifier; 11. a cover is turned; 12. a heat exchanger; 13. a first air pump; 14. a second air pump; 15. an alarm; 16. an alarm light; 17. a catalyst; 18. burning a nozzle; 19. a combustion chamber; 20. and an activated carbon layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a reflow oven for processing a PCB (printed circuit board) with hot air backflow comprises a reflow oven 1, wherein supporting legs 4 are welded at the bottom of the reflow oven 1, the bottom of the reflow oven 1 is horizontally placed through the supporting legs 4, a pipeline is spliced at the top of the reflow oven 1, a hot air backflow device 2 is fixedly connected at the top of the reflow oven 1 through the pipeline, the hot air backflow device 2 comprises a catalytic combustion box 9, a purifier 10 and a heat exchanger 12, the outer wall of the heat exchanger 12 is spliced with the outer wall of the catalytic combustion box 9 through the pipeline, the outer wall of the catalytic combustion box 9 is spliced with the outer wall of the purifier 10 through the pipeline, the reflow oven 1 is placed on the ground through the supporting legs 4, when the reflow oven 1 works, a first air pump 13 and a second air pump 14 in the hot air backflow device 2 extract internal waste gas, the two air pumps are in a volute shape, the waste gas absorbing effect is good and durable, and the waste gas is sent to the catalytic combustion box 9, the burner 18 and the catalyst 17 on the combustion chamber 19 are purified, the purifier 10 is purified again, the purified flue gas is heated by the heat exchanger 12 and then discharged back into the reflow furnace 1, the internal waste gas is purified and filtered, and finally the purified flue gas is heated and then discharged back, so that the heat consumption is reduced, the front side of the reflow furnace 1 is fixedly connected with the alarm device 3, the inside of the alarm device 3 comprises the toxic gas detector 5, the combustible gas detector 6 and the temperature detector 7, the outer wall of the toxic gas detector 5 is electrically connected with the outer wall of the combustible gas detector 6, the outer wall of the temperature detector 7 is electrically connected with the outer wall of the combustible gas detector 6, the toxic gas detector 5 and the combustible gas detector 6 in the alarm device 3 detect the internal waste gas concentration, once the concentration reaches a dangerous value or the temperature of the temperature detector 7 is detected to be too high, the alarm notification can be carried out through the alarm 15 and the, and detection is carried out at any time, so that accidents are prevented.

In this embodiment, the front of reflow oven 1 is provided with warning light 16, the right-hand member that the warning light 16 was kept away from in the front of reflow oven 1 is provided with siren 15, the outer wall of warning light 16 and the outer wall electric connection of siren 15, wherein, the warning light 16 flickers under meetting the condition, in this embodiment, the top of reflow oven 1 is pegged graft and is had first air pump 13, the right-hand member that first air pump 13 was kept away from at reflow oven 1 top is pegged graft and is had second air pump 14, wherein, the air pump is bled, each device is connected to the power cord, unified control.

In this embodiment, the top of the reflow oven 1 is fixedly connected with the bracket 8, the top of the bracket 8 is welded with the outer wall of the catalytic combustion box 9, wherein the catalytic combustion box 9 can purify air, in this embodiment, the inside of the catalytic combustion box 9 includes a burner 18 and a combustion chamber 19, the outer wall of the burner 18 is inserted into the outer wall of the combustion chamber 19, in this embodiment, the right side of the burner 18 is fixedly connected with a catalyst 17, the inside of the catalytic combustion box 9 is provided with an activated carbon layer 20, the front of the catalytic combustion box 9 is hinged and tightly matched with a flip cover 11, wherein the catalyst 17 can be replaced by opening the flip cover 11, and the catalytic combustion is to oxidize and decompose combustible substances in the exhaust gas at a lower temperature by using the catalyst 17.

During the use, reflow oven 1 places on ground through landing leg 4, at reflow oven 1 during operation, inside waste gas is extracted to first air pump 13 and second air pump 14 among the hot-blast reflux unit 2, send catalytic combustion case 9 to through the pipeline in, nozzle 18 and catalyst 17 on the combustion chamber 19 purify, clarifier 10 purifies once more, the flue gas heats through heat exchanger 12 after the purification, arrange back into reflow oven 1 again, poisonous gas detector 5 and combustible gas detector 6 among alarm device 3 detect inside waste gas concentration, once concentration reaches dangerous value or thermodetector 7 detects the high temperature, can carry out the alarm through siren 15 and warning light 16 and inform.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a reflow oven is used in processing of hot-blast backward flow's PCB board, includes reflow oven (1), its characterized in that: the bottom of the reflow oven (1) is welded with supporting legs (4), the bottom of the reflow oven (1) is horizontally placed through the supporting legs (4), the top of the reflow oven (1) is spliced with a pipeline, the top of the reflow oven (1) is fixedly connected with a hot air reflux device (2) through the pipeline, the hot air reflux device (2) comprises a catalytic combustion box (9), a purifier (10) and a heat exchanger (12) inside, the outer wall of the heat exchanger (12) is spliced with the outer wall of the catalytic combustion box (9) through the pipeline, the outer wall of the catalytic combustion box (9) is spliced with the outer wall of the purifier (10) through the pipeline, the front of the reflow oven (1) is fixedly connected with an alarm device (3), and the alarm device (3) comprises a toxic gas detector (5), a combustible gas detector (6) and a temperature detector (7) inside, the outer wall of the toxic gas detector (5) is electrically connected with the outer wall of the combustible gas detector (6), and the outer wall of the temperature detector (7) is electrically connected with the outer wall of the combustible gas detector (6).

2. The reflow oven for processing the PCB with the reflow by hot air as claimed in claim 1, wherein: the front of reflow oven (1) is provided with warning light (16), the right-hand member that reflow oven (1) openly kept away from warning light (16) is provided with siren (15), the outer wall of siren (16) and the outer wall electric connection of siren (15).

3. The reflow oven for processing the PCB with the reflow by hot air as claimed in claim 1, wherein: the top of the reflow oven (1) is spliced with a first air pump (13), and the right end of the top of the reflow oven (1), which is far away from the first air pump (13), is spliced with a second air pump (14).

4. The reflow oven for processing the PCB with the reflow by hot air as claimed in claim 1, wherein: the top of the reflow oven (1) is fixedly connected with a support (8), and the top of the support (8) is welded with the outer wall of the catalytic combustion box (9).

5. The reflow oven for processing the PCB with the reflow by hot air as claimed in claim 1, wherein: the catalytic combustion box (9) comprises a burner (18) and a combustion chamber (19) inside, and the outer wall of the burner (18) is inserted into the outer wall of the combustion chamber (19).

6. The reflow oven for processing the PCB with the reflow by hot air as claimed in claim 5, wherein: the right side fixedly connected with catalyst (17) of nozzle (18), the inside of catalytic combustion case (9) is provided with activated carbon layer (20), the front of catalytic combustion case (9) is articulated and closely cooperates there is flip (11).