Gas flow control structure of reflow oven

Abstract

The utility model discloses a reflow oven gas flow control structure, which relates to the technical field of reflow ovens and comprises a connecting groove, a mounting groove is fixedly mounted at the bottom of the connecting groove, a flow velocity detector is fixedly mounted on one side of the interior of the mounting groove, a telescopic hose is fixedly mounted at the bottom of the mounting groove, and the flow velocity detector is fixedly mounted on one side of the mounting groove. A fixing groove is fixedly formed in the bottom of the telescopic hose, two side plates are fixedly installed on the two sides of the bottom of the fixing groove, two electric air guide plates are movably connected into the side plates, and an air outlet cover is fixedly installed on the outer side of the fixing groove. According to the gas flow control structure of the reflow oven, the flow speed in the mounting groove can be detected through the flow speed detector in the mounting groove, the air outlet flow of the three flow equalizing nets can be adjusted through operation of the electric air guide plates in the side plates, air can be guided to the two sides and the middle through the two air guide plates, and the air flow in the reflow oven is controlled. Therefore, the flow speed of the gas blown out of the flow equalizing net can be controlled, and the practicability of the structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reflow furnaces, in particular to a gas flow control structure of a reflow furnace. Background Art

[0002] The reflow oven is also called a reflow machine or a reflow oven. It heats the solder paste to melt it, so that the surface mount components and PCB pads can be reliably combined together through the solder paste alloy. According to the development of technology, it can be divided into: vapor phase reflow, infrared reflow, far infrared reflow, infrared heated air reflow and full hot air reflow.

[0003] The existing Chinese utility model patent with reference announcement number CN217913294U discloses a heating mechanism of a reflow furnace, including: a processing table, a mesh belt conveyor is arranged on the top surface of the processing table, a furnace body is fixedly installed on the top surface of the processing table; a heating component, the heating component is arranged inside the furnace body and is used to heat the PCB board, the heating component includes a blower, the blower is fixedly installed on the top surface of the furnace body, a heating plate is arranged inside the furnace body, a mounting frame is fixedly installed inside the heating plate, a heating wire is fixedly installed inside the mounting frame, and the mounting frame is provided with a mounting frame. When nitrogen is transported into the heating plate by the blower, the nitrogen passes through the mounting frame, and the heating wires are evenly distributed in the mounting frame, so that the nitrogen passing through is evenly heated, and then the heated nitrogen is blown onto the PCB board through the flow equalizing plate, so that the electronic components of the PCB board are welded on the PCB board, ensuring that the electronic components of the PCB board can be evenly heated, and preventing uneven welding quality caused by uneven heating, thereby affecting the quality of the PCB board. By setting up an installation frame, when the nitrogen is transported into the heating plate, the nitrogen passes through the installation frame, and the heating wires are evenly distributed in the installation frame, so that the nitrogen passing through is evenly heated, and then the heated nitrogen is blown onto the PCB board through the flow equalizer, ensuring that the electronic components of the PCB board can be evenly heated, and preventing uneven heating from causing uneven welding quality and affecting the quality of the PCB board. By setting up an installation ring, when the used nitrogen becomes waste gas, it is discharged through the waste gas pipe. When discharged, it first passes through the filter net inside the installation ring to filter the particulate matter in the waste gas, and then passes through the activated carbon to adsorb the toxic and harmful substances in the waste gas, thereby preventing the discharged waste gas from affecting the health of the surrounding workers.

[0004] Although the heating mechanism of the above-mentioned reflow furnace solves the problem of uneven hot air heating by setting a mounting frame and a mounting ring, the above-mentioned equipment only relies on a flow equalizing plate for diversion, and there is still a problem of insufficient heating uniformity. In addition, the existing reflow furnace has poor control effect on airflow, which affects the use of the equipment. Utility Model Content

[0005] The utility model aims to overcome the problems of uneven flow distribution and poor airflow control effect in the prior art, and provides a gas flow control structure for a reflow furnace.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A gas flow control structure for a reflow furnace, comprising:

[0008] The vent pipe is provided with an air filter, and the air filter is provided with an air filter. The vent pipe is provided with an air filter, and the air filter is provided with an air filter. The vent pipe is provided with an air filter. The vent pipe is provided with an air filter.

[0009] In a preferred embodiment, a blower is fixedly mounted on the outer side of the connecting groove, and a support frame is fixedly mounted on the bottom of the blower, and the support frame is a supporting structure.

[0010] In a preferred embodiment, an air outlet groove is fixedly installed on one side of the interior of the support frame, and the air outlet groove is a structure for air outlet.

[0011] In a preferred embodiment, a base is fixedly installed at the bottom of the support frame, and a conveyor belt is fixedly installed in the middle of the top of the base, and the conveyor belt is a structure for conveying.

[0012] In a preferred embodiment, a vacuum pump is fixedly installed on the top of the air outlet groove, and a filter screen is fixedly installed on the bottom of the vacuum pump, and the filter screen is a structure for filtering gas.

[0013] In a preferred embodiment, a connecting pipe is fixedly installed on one side of the vacuum pump, and the connecting pipe is a structure used for connection.

[0014] In a preferred embodiment, an air outlet pipe is fixedly mounted on one side of the connecting pipe, and the air outlet pipe is a structure for air outlet.

[0015] In a preferred embodiment, a filter device is fixedly installed in the middle of the gas outlet pipe, and the filter device is a structure for filtering gas.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The gas flow control structure of the reflow furnace can detect the flow velocity inside the installation groove through the flow velocity detector inside the installation groove, and the air flow rate of the three flow-equalizing nets can be adjusted through the operation of the electric air guide plate inside the side plate. The wind can be guided to the two sides and the middle through the two air guide plates, so that the flow velocity of the gas blown out from the flow-equalizing net can be controlled, which improves the practicality of the gas flow control structure of the reflow furnace;

[0018] 2. The gas flow control structure of the reflow furnace can make the gas flow evenly to the three sides of the two baffles through the flow equalizing plate, and the gas can be heated by the heating device. The flow rate of the gas in each slot can be detected by the flow rate detector, so as to cooperate with the electric air guide plate to adjust the flow rate, thereby improving the practicality of the gas flow control structure of the reflow furnace. Finally, the heated gas is subjected to a second flow equalization through the flow equalizing net, thereby improving the use of the gas flow control structure of the reflow furnace and the uniformity of heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the connection groove in the utility model;

[0021] Figure 3 It is a schematic diagram of the lifting rod in the utility model;

[0022] Figure 4 It is a schematic diagram of the support plate in the utility model;

[0023] Figure 5 It is a schematic diagram of the air pump in the utility model.

[0024] 1. Connecting slot; 11. Blower; 12. Support frame; 13. Air outlet slot; 14. Base; 15. Conveyor belt; 2. Lifting rod; 21. Air outlet cover; 22. Fixed slot; 23. Side panel; 24. Electric air guide plate; 25. Telescopic hose; 26. Mounting slot; 27. Flow rate detector; 3. Support plate; 31. Flow equalizing plate; 32. Air outlet; 33. Baffle; 34. Heating device; 35. Flow equalizing net; 36. Flow rate detector; 4. Vacuum pump; 41. Filter net; 42. Connecting pipe; 43. Air outlet pipe; 44. Filter device. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Combined with Figure 1-Figure 5 In this embodiment, a gas flow control structure of a reflow furnace includes: a connecting groove 1, a blower 11 is fixedly installed on the outer side of the connecting groove 1, and a support frame 12 is fixedly installed on the bottom of the blower 11.

[0027] An air outlet groove 13 is fixedly mounted on one side of the inner portion of the support frame 12 .

[0028] A base 14 is fixedly mounted on the bottom of the support frame 12 , and a conveyor belt 15 is fixedly mounted in the middle of the top of the base 14 .

[0029] Specifically, the outside air can be sent from the connecting groove 1 into the interior of the air outlet cover 21 through the blower 11, the device to be welded can be transported through the operation of the conveyor belt 15 on the top of the base 14, and the outer side can be wrapped by the support frame 12, thereby improving the practicality of the gas flow control structure of the reflow furnace, and the exhaust gas can be discharged through the air outlet groove 13.

[0030] A mounting groove 26 is fixedly installed at the bottom of the connecting groove 1, and the mounting groove 26 is in the shape of a "mouth". A flow rate detector 27 is fixedly installed on one side of the interior of the mounting groove 26. A telescopic hose 25 is fixedly installed at the bottom of the mounting groove 26, and a fixing groove 22 is fixedly installed at the bottom of the telescopic hose 25. Two side panels 23 are fixedly installed on both sides of the bottom of the fixing groove 22, and two electric air guide plates 24 are movably connected inside the side panels 23. An air outlet cover 21 is fixedly installed on the outer side of the fixing groove 22, and two lifting rods 2 are fixedly installed on both sides of the top of the air outlet cover 21.

[0031] Specifically, the height of the air outlet cover 21 can be adjusted by the lifting rod 2, the flow rate of the gas inside the mounting groove 26 can be detected by the flow rate detector 27, and the angle of exhaust air can be adjusted by the operation of the electric air guide plate 24 in the side panel 23, thereby facilitating the uniformity of the air outlet of the flow equalizing plate 31 and improving the practicability of the gas flow control structure of the reflow furnace.

[0032] A support plate 3 is fixedly installed at the bottom of the air outlet cover 21, and the support plate 3 is in the shape of a "mouth". A flow equalizing plate 31 is fixedly installed inside the support plate 3, and an air outlet 32 ​​is fixedly installed at the bottom of the support plate 3. Two baffles 33 are fixedly installed on both sides of the inside of the air outlet 32, and a heating device 34 is fixedly installed on one side of the baffle 33. Three flow equalizing nets 35 are fixedly installed at the bottom of the air outlet 32, and three flow velocity detectors 36 are fixedly installed on one side of the air outlet 32.

[0033] Specifically, the flow equalizing plate 31 and the flow equalizing net 35 can achieve a double-layer flow equalizing effect, thereby improving the heating uniformity of the gas flow control structure of the reflow furnace. The gas can be heated by the heating device 34, and the exhaust flow rate can be detected by the flow rate detector 36, so that the gas flow can be controlled in conjunction with the electric air guide plate 24, thereby improving the practicability of the gas flow control structure of the reflow furnace.

[0034] An air pump 4 is fixedly installed on the top of the air outlet groove 13 , and a filter screen 41 is fixedly installed on the bottom of the air pump 4 .

[0035] A connecting pipe 42 is fixedly mounted on one side of the vacuum pump 4 .

[0036] An air outlet pipe 43 is fixedly mounted on one side of the connecting pipe 42 .

[0037] A filter device 44 is fixedly installed in the middle of the air outlet pipe 43 .

[0038] Specifically, through the operation of the vacuum pump 4, the waste gas can be sucked in and sent into the interior of the outlet pipe 43 from the connecting pipe 42. The gas can be filtered and discharged through the filtering device 44. The waste gas can be filtered through the filter net 41, thereby improving the practicality of the gas flow control structure of the reflow furnace.

[0039] Working principle: First, through the operation of the blower 11, the outside air can be sucked in and then sent into the interior of the telescopic hose 25 from the connecting groove 1. The height of the outlet cover 21 can be adjusted by extending and retracting the two lifting rods 2 on both sides of the top of the outlet cover 21. The flow rate of the gas inside the installation groove 26 can be detected by the flow rate detector 27, thereby improving the control effect of the gas flow control structure of the reflow furnace. Through the operation of the electric air guide plate 24 in the bottom side plate 23 of the fixed groove 22, the air outlet angle can be adjusted, so that the air is blown into the inner sides and the middle position of the outlet cover 21, avoiding the problem of slower flow rate on both sides caused by gas blowing to the middle. The gas can be evenly distributed through the flow equalizer 31, thereby improving the uniformity of the gas. The gas can be divided into three parts through the two baffles 33 inside the outlet 32, and the gas is heated by the heating device 3. 4 can heat the incoming gas, and the flow rate of the gas inside the three slots can be detected by the flow rate detector 36. At the same time, the rotation of the electric air guide plate 24 can be used to adjust the gas flow rate, thereby improving the practicality and control effect of the gas flow control structure of the reflow furnace. After the objects are sent in by the conveyor belt 15 and heated by hot air, they are sent out from the other side. The exhaust gas generated by the heating inside the support frame 12 is sucked in by the operation of the exhaust pump 4, and the impurities in the exhaust gas can be filtered through the filter screen 41, thereby improving the practicality of the gas flow control structure of the reflow furnace. The gas is sent from the connecting pipe 42 into the inside of the outlet pipe 43 by the exhaust pump 4, and the exhaust gas can be filtered through the intermediate filter device 44 of the outlet pipe 43, and finally discharged from the top of the outlet pipe 43, thereby improving the practicality of the gas flow control structure of the reflow furnace.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas flow control structure for a reflow furnace, characterized in that: The gas flow control structure of the reflow furnace comprises: a connecting groove (1), a mounting groove (26) fixedly mounted at the bottom of the connecting groove (1), the mounting groove (26) presenting a "mouth" shape, a flow rate detector (27) fixedly mounted on one side of the interior of the mounting groove (26), a telescopic hose (25) fixedly mounted at the bottom of the mounting groove (26), a fixed groove (22) fixedly mounted at the bottom of the telescopic hose (25), two side plates (23) fixedly mounted on both sides of the bottom of the fixed groove (22), two electric air guide plates (24) movably connected inside the side plates (23), and an air outlet cover (21) fixedly mounted on the outside of the fixed groove (22) Two lifting rods (2) are fixedly installed on both sides of the top of the air outlet cover (21), a support plate (3) is fixedly installed on the bottom of the air outlet cover (21), the support plate (3) is in the shape of a "mouth", a flow equalizing plate (31) is fixedly installed inside the support plate (3), an air outlet (32) is fixedly installed at the bottom of the support plate (3), two baffles (33) are fixedly installed on both sides of the inside of the air outlet (32), a heating device (34) is fixedly installed on one side of the baffle (33), three flow equalizing nets (35) are fixedly installed on the bottom of the air outlet (32), and three flow velocity detectors (36) are fixedly installed on one side of the air outlet (32).

2. A gas flow control structure for a reflow furnace according to claim 1, characterized in that: A blower (11) is fixedly mounted on the outer side of the connection groove (1), and a support frame (12) is fixedly mounted on the bottom of the blower (11).

3. A gas flow control structure for a reflow furnace according to claim 2, characterized in that: An air outlet groove (13) is fixedly mounted on one side of the interior of the support frame (12).

4. A gas flow control structure for a reflow furnace according to claim 3, characterized in that: A base (14) is fixedly mounted at the bottom of the support frame (12), and a conveyor belt (15) is fixedly mounted in the middle of the top of the base (14).

5. The gas flow control structure of a reflow furnace according to claim 3, characterized in that: An air pump (4) is fixedly mounted on the top of the air outlet groove (13), and a filter screen (41) is fixedly mounted on the bottom of the air pump (4).

6. A reflow furnace gas flow control structure according to claim 5, characterized in that: A connecting pipe (42) is fixedly mounted on one side of the air extraction pump (4).

7. A gas flow control structure for a reflow furnace according to claim 6, characterized in that: An air outlet pipe (43) is fixedly mounted on one side of the connecting pipe (42).

8. A gas flow control structure for a reflow furnace according to claim 7, characterized in that: A filtering device (44) is fixedly installed in the middle of the air outlet pipe (43).

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