A high-efficiency and energy-saving reflow oven mechanism

Abstract

The utility model relates to the field of reflow soldering furnaces, and in particular to a high-efficiency and energy-saving reflow soldering furnace mechanism. The technical problem to be solved by the utility model is to provide a high-efficiency and energy-saving reflow soldering furnace mechanism that can recycle the heat of the exhaust gas to reduce heat loss; at the same time, purify the exhaust gas to reduce air pollution. A high-efficiency and energy-saving reflow soldering furnace mechanism includes a reflow soldering furnace box, a conveying device, a heating device, a heat exchange box, an exhaust pipe, a first conveying pipe, a purification box, a second conveying pipe, a branch pipe, a heat exchange box, a heat dissipation pipe, a heat dissipation fin, a heat dissipation fan, a purification box, a first filter layer, a second filter layer, a third filter layer and an exhaust pipe. The utility model achieves the effect of recycling the heat of the exhaust gas to reduce heat loss; at the same time, purifying the exhaust gas to reduce air pollution.

Description

Technical Field

[0001] The utility model relates to the field of reflow soldering furnaces, in particular to a high-efficiency and energy-saving reflow soldering furnace mechanism. Background Art

[0002] Reflow soldering oven is a key equipment used to solder surface mount components to printed circuit boards in the electronic assembly industry. In this process, solder paste is used. When the solder paste is heated to the melting point, a chemical reaction will occur to release smoke, volatile organic compounds and other gases. If these emissions are not properly handled, they will not only affect the air quality of the working environment, but may also cause harm to the health of the operators, and will also reduce the visibility and service life of the equipment; therefore, reflow soldering equipment is usually equipped with an exhaust system to remove harmful gases: but the exhaust system also exhausts a large amount of heat while removing harmful gases, which causes an increase in energy consumption and increases production costs; therefore, it is urgent to develop a high-efficiency and energy-saving reflow soldering oven mechanism that can recycle the heat of the exhaust gas and reduce heat loss; at the same time, it can purify the exhaust gas and reduce air pollution. Utility Model Content

[0003] In order to overcome the shortcomings of the exhaust system of the reflow soldering equipment that discharges a large amount of heat while discharging harmful gases, thereby causing an increase in energy consumption and increasing production costs, the technical problem to be solved by the utility model is to provide a high-efficiency and energy-saving reflow soldering furnace mechanism that can recycle the heat of the discharged exhaust gas to reduce heat loss; at the same time, purify the exhaust gas to reduce air pollution.

[0004] The utility model is achieved by the following specific technical means:

[0005] A high-efficiency and energy-saving reflow soldering furnace mechanism, comprising a reflow soldering furnace box; a conveying device fixedly arranged in the reflow soldering furnace box; a heating device fixedly arranged on both sides of the conveying device; the heating device comprises a preheating zone, a reflow soldering zone and a cooling zone sequentially arranged on both sides of the conveying device;

[0006] The reflow soldering furnace is provided with an exhaust device capable of recovering heat; the exhaust device comprises a heat exchange box fixedly installed in the reflow soldering furnace, the heat exchange box is fixedly connected with the reflow soldering area through an exhaust pipe arranged on one side, and a pipeline extension is fixedly installed on the exhaust pipe; a purification box fixedly installed on the upper end of the reflow soldering furnace body, the purification box is fixedly connected with the heat exchange box through a first delivery pipe; a second delivery pipe fixedly connected to one side of the heat exchange box, the second delivery pipe is fixedly connected with the preheating area through a branch pipe;

[0007] The heat exchange box comprises a heat exchange box body; a heat dissipation pipe fixedly installed in the heat exchange box body, and the two ends of the heat dissipation pipe are respectively fixedly connected with the exhaust pipe and the first delivery pipe; heat dissipation fins fixedly installed on both sides of the heat dissipation pipe; a heat dissipation fan fixedly installed in the heat dissipation box body and away from one end of the second delivery pipe;

[0008] The purification box comprises a purification box body; a first filter layer, a second filter layer and a third filter layer fixedly installed in the purification box body; and an exhaust pipe fixedly arranged at the upper end of the purification box body and connected to the purification box body.

[0009] Furthermore, the first filter layer, the second filter layer and the third filter layer are arranged in sequence; the first filter layer, the second filter layer and the third filter layer are respectively a HEPA filter, a pp cotton filter layer and an activated carbon filter layer; by the first filter layer, the second filter layer and the third filter layer arranged in sequence, tiny particles and harmful substances such as formaldehyde in the polluted gas can be effectively filtered out.

[0010] Furthermore, the heat dissipation pipe is made of a copper pipe, and the heat dissipation pipe has a multi-section bending structure; the heat dissipation area of ​​the heat dissipation pipe in contact with the heat dissipation fins is increased, thereby improving the heat dissipation performance.

[0011] Furthermore, a heat-insulating material layer is fixedly adhered to the inner diameter surface of the second delivery pipe and the branch pipe to reduce heat loss and improve heat recovery rate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model achieves the effects of recycling the heat of the discharged waste gas and reducing heat loss; at the same time, the waste gas is purified and air pollution is reduced.

[0014] By setting an exhaust device capable of recovering heat in the reflow oven, the heat of the exhaust gas can be recovered and utilized, thereby reducing the energy consumption of the reflow oven and achieving high efficiency and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0016] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0017] Figure 3 It is a schematic cross-sectional structure diagram of the exhaust device of the utility model.

[0018] Figure 4 It is a schematic diagram of the side structure of the heat dissipation pipe of the utility model.

[0019] The markings in the accompanying drawings are: 1-reflow oven box, 2-conveying device, 3-preheating zone, 4-reflow zone, 5-cooling zone, 6-heat exchange box, 7-exhaust pipe, 8-first conveying pipe, 9-purification box, 10-second conveying pipe, 11-branch pipe, 61-heat exchange box, 62-heating pipe, 63-heating fins, 64-heating fan, 71-duct fan, 91-purification box, 92-first filter layer, 93-second filter layer, 94-third filter layer, 95-exhaust pipe. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings: Example

[0021] A high-efficiency and energy-saving reflow oven mechanism, such as Figure 1-4 As shown, it includes a reflow oven body 1; a conveying device 2 fixedly arranged in the reflow oven body 1; a heating device fixedly arranged on both sides of the conveying device 2; the heating device includes a preheating zone 3, a reflow zone 4 and a cooling zone 5 sequentially arranged on both sides of the conveying device 2;

[0022] The reflow soldering furnace body 1 is provided with an exhaust device capable of recovering heat; the exhaust device comprises a heat exchange box 6 fixedly installed in the reflow soldering furnace body 1, the heat exchange box 6 is fixedly connected to the reflow soldering area 4 through an exhaust pipe 7 provided on one side, and a pipeline extension is fixedly installed on the exhaust pipe 7; a purification box 9 fixedly installed on the upper end of the reflow soldering furnace body 1, the purification box 9 is fixedly connected to the heat exchange box 6 through a first delivery pipe 8; a second delivery pipe 10 fixedly connected to one side of the heat exchange box 6, and the second delivery pipe 10 is fixedly connected to the preheating area 3 through a branch pipe 11;

[0023] The heat exchange box 6 includes a heat exchange box body 61; a heat dissipation pipe 62 fixedly installed in the heat exchange box body 61, and the two ends of the heat dissipation pipe 62 are respectively fixedly connected to the exhaust pipe 7 and the first delivery pipe 8; heat dissipation fins 63 fixedly installed on both sides of the heat dissipation pipe 62; a heat dissipation fan 64 fixedly installed in the heat dissipation box body and away from one end of the second delivery pipe 10;

[0024] The purification box 9 includes a purification box body 91 ; a first filter layer 92 , a second filter layer 93 and a third filter layer 94 fixedly installed in the purification box body 91 ; and an exhaust pipe 95 fixedly arranged at the upper end of the purification box body 91 and connected to the purification box body 91 .

[0025] Working principle:

[0026] The practical and efficient energy-saving reflow soldering furnace mechanism recovers and utilizes the heat of the exhaust gas by arranging an exhaust device capable of recovering heat in the reflow soldering furnace box 1, thereby reducing the energy consumption of the reflow soldering furnace and achieving the effect of efficient energy saving.

[0027] When the reflow oven is working, the printed circuit board first enters the preheating zone 3 of the heating device for preheating, and then enters the reflow soldering zone 4 for reflow soldering. The exhaust gas generated in the reflow soldering zone 4 enters the heat pipe 62 of the heat exchange box 6 through the exhaust pipe 7. The heat pipe 62 is made of copper pipe, and heat dissipation fins 63 are fixedly arranged on both sides of the heat pipe 62. The heat dissipation fan 64 blows the gas to the heat pipe 62 and the heat dissipation fins 63, so that the gas exchanges heat with the heat pipe 62 and the heat dissipation fins 63 to form hot air. Then the hot air is transported to the preheating zone 3 through the second conveying pipe 10 and the branch pipe 11 to preheat the printed circuit board, so that the heat in the exhaust gas is recycled, energy consumption is reduced, and practicality is improved; at the same time, the exhaust gas after heat exchange enters the purification box 9 through the first conveying pipe 8, and the tiny particles and harmful substances such as formaldehyde in the gas are filtered out through the first filter layer 92, the second filter layer 93 and the third filter layer 94, and then discharged to reduce air pollution.

[0028] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0029] Although the present disclosure has been described in detail with reference to the exemplary embodiments, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the present disclosure.

Claims

1. A high-efficiency and energy-saving reflow soldering furnace mechanism, comprising a reflow soldering furnace housing (1); a conveying device (2) fixedly arranged in the reflow soldering furnace housing (1); a heating device fixedly arranged on both sides of the conveying device (2); the heating device comprising a preheating zone (3), a reflow soldering zone (4) and a cooling zone (5) sequentially arranged on both sides of the conveying device (2); It is characterized in that The reflow soldering furnace body (1) is provided with an exhaust device capable of recovering heat; the exhaust device comprises a heat exchange box (6) fixedly installed in the reflow soldering furnace body (1), the heat exchange box (6) being fixedly connected to the reflow soldering zone (4) via an exhaust pipe (7) provided on one side, and a pipeline extension being fixedly installed on the exhaust pipe (7); a purification box (9) fixedly installed on the upper end of the reflow soldering furnace body (1), the purification box (9) being fixedly connected to the heat exchange box (6) via a first delivery pipe (8); a second delivery pipe (10) fixedly connected to one side of the heat exchange box (6), the second delivery pipe (10) being fixedly connected to the preheating zone (3) via a branch pipe (11); The heat exchange box (6) comprises a heat exchange box body (61); a heat dissipation pipe (62) fixedly mounted in the heat exchange box body (61), the two ends of the heat dissipation pipe (62) being fixedly connected to the exhaust pipe (7) and the first delivery pipe (8) respectively; heat dissipation fins (63) fixedly mounted on both sides of the heat dissipation pipe (62); and a heat dissipation fan (64) fixedly mounted in the heat dissipation box body and away from one end of the second delivery pipe (10); The purification box (9) comprises a purification box body (91); a first filter layer (92), a second filter layer (93) and a third filter layer (94) fixedly mounted in the purification box body (91); and an exhaust pipe (95) fixedly arranged at the upper end of the purification box body (91) and communicating with the purification box body (91).

2. The high-efficiency and energy-saving reflow oven mechanism according to claim 1, characterized in that: The first filter layer (92), the second filter layer (93) and the third filter layer (94) are arranged in sequence; the first filter layer (92), the second filter layer (93) and the third filter layer (94) are respectively a HEPA filter, a PP cotton filter layer and an activated carbon filter layer.

3. The high-efficiency and energy-saving reflow oven mechanism according to claim 1, characterized in that: The heat dissipation pipe (62) is made of a copper pipe, and the heat dissipation pipe (62) has a multi-section bent structure.

4. The high-efficiency and energy-saving reflow oven mechanism according to claim 1, characterized in that: A thermal insulation material layer is fixedly adhered to the inner diameter surfaces of the second delivery pipe (10) and the branch pipe (11).

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