A nitrogen oven with uniform drying
By setting up an air guiding structure and through holes in the shelf in the nitrogen oven, the problem of uneven drying of workpieces was solved, and a more uniform drying effect was achieved.
Patent Information
- Application Number
- CN202423206165.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In existing nitrogen ovens, the drying effect of workpieces in the baking chamber is uneven, especially for workpieces located in the middle or side of the racks.
An air guiding structure, including a longitudinal guide plate and a flow divider, is set at the air outlet of the air supply device. The flow divider redistributes the nitrogen gas so that it is evenly distributed in the baking chamber. Through holes are set on the shelf to enhance the flowability of the nitrogen gas.
This achieves uniform distribution of nitrogen gas in the baking chamber, improving the drying effect of workpieces, especially those located on the side and center of the shelf.
Smart Images
Figure CN223596370U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a nitrogen oven with uniform drying. BACKGROUND
[0002] The existing nitrogen oven comprises a box body, a nitrogen transfer cavity is arranged at the upper end of the box body, and a drying chamber for placing workpieces is arranged at the lower end of the box body. After nitrogen is injected into the nitrogen transfer cavity for heating, the heated nitrogen is injected into the drying chamber through the gas outlet of the nitrogen transfer cavity to dry the workpieces in the drying chamber. For example, when a PCB is heated and dried, the surface needs to be prevented from oxidizing, so the drying needs to be carried out in a nitrogen environment. However, the above-mentioned nitrogen oven has the following problems in use:
[0003] A layer rack for placing workpieces is arranged in the drying chamber, and a plurality of workpieces are placed on the layer rack. The gas outlet is generally located in the middle or side of the upper layer rack. Therefore, most of the nitrogen entering the drying chamber through the gas outlet will blow to the middle or side of the layer rack, so that the drying effect of the workpieces on the layer rack is not ideal. SUMMARY
[0004] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a nitrogen oven with uniform drying.
[0005] In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme:
[0006] A nitrogen oven with uniform drying, comprising a box body, a nitrogen transfer cavity arranged at the upper end of the box body, and a drying chamber arranged at the lower end of the box body. A heating assembly for heating nitrogen is arranged in the nitrogen transfer cavity. A gas supply device is arranged between the drying chamber and the nitrogen transfer cavity. A gas guide structure is arranged at the lower end of the gas supply device. The gas guide structure comprises a longitudinal flow guide plate connected to the gas outlet of the gas supply device. The longitudinal flow guide plate is connected to a flow distribution plate. The flow distribution plate defines a first end and a second end. The first end is located directly below the gas outlet of the gas supply device. Gas outlets are arranged on the flow distribution plate. The diameter of the gas outlets at the first end is smaller than that of the gas outlets at the second end.
[0007] Preferably, the heating assembly comprises a heating bin arranged in the nitrogen transfer cavity. A heating pipe is arranged in the heating bin. The heating bin is connected to the gas supply device.
[0008] Preferably, the gas supply device is a fan.
[0009] Preferably, a plurality of L-shaped strips are arranged on the side wall of the drying chamber in a vertical direction. Two L-shaped strips jointly limit a storage plate.
[0010] Preferably, the storage plate is provided with a plurality of through holes.
[0011] Preferably, the air inlet of the fan is provided with a transverse guide plate.
[0012] The beneficial effects of the present application are as follows:
[0013] In order to overcome the uneven drying phenomenon of the workpiece located on the storage plate in the prior art, the air guide structure is arranged at the air outlet of the air supply device, nitrogen is re-divided through the air guide structure, and finally the nitrogen is uniformly distributed in the baking chamber, thereby improving the drying effect of the workpiece. BRIEF DESCRIPTION OF DRAWINGS
[0014] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
[0015] Figure 1 Structure diagram of the nitrogen oven with uniform drying effect of the present application Figure One ;
[0016] Figure 2 Structure diagram of the nitrogen oven with uniform drying effect of the present application Figure Two ;
[0017] Figure 3 Structure diagram of the nitrogen oven with uniform drying effect of the present application Figure Three ;
[0018] Figure 4 Structure diagram of the nitrogen oven with uniform drying effect of the present application Figure Four . DETAILED DESCRIPTION
[0019] The embodiments of the present application will be described in detail below, and the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout.
[0020] The orientation shown in the drawings should not be understood as limiting the specific protection scope of the present application, but only for the reference understanding of the preferred embodiments, and the position of the product components shown in the drawings can be changed or the number can be increased or the structure can be simplified.
[0021] The "connection" described in the specification and the components shown in the drawings are connected to each other, which can be understood as fixedly connected or detachably connected or integrally connected; it can be directly connected or connected through an intermediate medium, and those skilled in the art can understand the connection relationship according to the specific situation and can derive that the screw connection or riveting or welding or clamping or embedding connection or other suitable mode is used to replace different embodiments.
[0022] The orientation words such as up, down, left, right, top, bottom and the like described in the specification and shown in the drawings can be directly contacted or contacted through other features between them; for example, up can be directly above and obliquely above, or it only means higher than others; other orientations can be understood similarly.
[0023] The manufacturing materials of the components with solid shapes represented in the specification and drawings can adopt metal materials or non-metal materials or other synthetic materials; the machining processes adopted by the components with solid shapes can be stamping, forging, casting, wire cutting, laser cutting, injection molding, numerical milling, three-dimensional printing, machining and the like; the ordinary skilled in the art can adaptively select or combine selection according to different processing conditions, cost and precision, but are not limited to the above materials and manufacturing processes.
[0024] A nitrogen oven with uniform drying, referring to Figures 1-4 , comprising a box body 1, the upper end of the box body 1 is provided with a nitrogen transfer cavity, the lower end of the box body 1 is provided with a baking chamber 2, the nitrogen transfer cavity is provided with a heating assembly for heating nitrogen, the baking chamber 2 and the nitrogen transfer cavity are provided with a gas feeding device 3, the lower end of the gas feeding device 3 is provided with a gas guide structure, the gas guide structure comprises a longitudinal flow guide plate 41 connected to the gas outlet of the gas feeding device 3, the longitudinal flow guide plate 41 is connected with a flow distribution plate 42, the flow distribution plate 42 is defined with a first end 4-1 and a second end 4-2, the first end 4-1 is located directly below the gas outlet of the gas feeding device 3, the flow distribution plate 42 is provided with a gas outlet hole 43, the hole diameter of the gas outlet hole 43 of the first end 4-1 is smaller than that of the gas outlet hole 43 of the second end 4-2.
[0025] Further, the heating assembly comprises a heating bin 51 arranged in the nitrogen transfer cavity, the heating bin 51 is provided with a heating pipe 52, and the heating bin 51 is communicated with the gas feeding device 3.
[0026] Further, the gas feeding device 3 is a fan.
[0027] Further, a plurality of L-shaped strips 6 are arranged on the side wall of the baking chamber 2 in a vertical direction, and two L-shaped strips 6 jointly limit a placing plate 7.
[0028] Further, a plurality of through holes 71 are arranged on the placing plate 7.
[0029] Further, a transverse flow guide plate 8 is arranged at the air inlet of the fan.
[0030] The working principle of the utility model is:
[0031] The workpiece to be dried is placed on the placement plate 7, and then nitrogen is introduced into the heating bin 51, at this time the heating bin 51 is provided with a heating pipe 52, after the nitrogen in the heating bin 51 is heated to a certain temperature, then the gas feeding device 3 is started, the nitrogen in the heating bin 51 is sent to the baking chamber 2, then the heated nitrogen is used to dry the workpiece on the placement plate 7; the gas guiding structure is arranged below the gas feeding device 3, and the specific gas guiding structure is that a longitudinal flow guide plate 41 is arranged below the gas feeding device 3, a flow distribution plate 42 is arranged at the lower end of the longitudinal flow guide plate 41, a plurality of gas outlet holes 43 are arranged on the flow distribution plate 42, the flow distribution plate 42 is defined as a first end 4-1 and a second end 4-2, wherein the first end 4-1 of the flow distribution plate 42 is located below the gas feeding device 3, the diameter of the gas outlet hole 43 on the first end 4-1 is smaller than the diameter of the gas outlet hole 43 on the second end 4-2, that is, the gas feeding device 3 will first blow most of the nitrogen to the first end 4-1, because the diameter of the gas outlet hole 43 on the first end 4-1 is smaller than the diameter of the gas outlet hole 43 on the second end 4-2, so the nitrogen on the first end 4-1 will be distributed to the second end 4-2, and finally the nitrogen flowing to the baking chamber 2 from different positions of the flow distribution plate 42 is relatively uniform, so the nitrogen can flow uniformly to the side and middle of the baking chamber 2 through the gas guiding structure, and therefore the drying effect of the workpiece on the placement plate 7 can be improved.
[0032] On the basis of the above technical solution, a plurality of through holes 71 are formed in the placement plate 7, which can enhance the flowability of nitrogen in the baking chamber 2 and improve the drying effect on the front and back surfaces of the workpiece.
[0033] On the basis of the above technical solution, in terms of the structure of the gas feeding device 3, a fan is communicated with the side of the heating bin 51, and the fan is used to pump the nitrogen in the heating bin 51 into the baking chamber 2. In this technology, a transverse flow guide plate 8 is arranged at the air inlet of the fan, so that more nitrogen is gathered into the fan when the fan pumps nitrogen, and the fan blows the nitrogen into the baking chamber 2.
[0034] In the above technical solution, a plurality of L-shaped strips 6 are arranged on the side walls of the baking chamber 2 in a vertical direction, and two L-shaped strips 6 correspond to each other in a horizontal direction. Since the two ends of the placement plate 7 can be placed on the L-shaped strips 6, the corresponding L-shaped strips 6 can be selected to place the placement plate 7 according to the size of the workpiece when the workpiece is dried, and then the spacing between the placement plates 7 can be adjusted, so that the application range is wider.
[0035] In order to overcome the phenomenon that the workpiece on the placement plate 7 is not uniformly dried in the prior art, a gas guiding structure is arranged at the air outlet of the air supply device, the nitrogen is redistributed through the gas guiding structure, and finally the nitrogen is uniformly distributed in the baking chamber, thereby improving the drying effect of the workpiece.
[0036] Although the utility model is described in detail with reference to the above examples, it is obvious to those skilled in the art through the disclosure that various changes or modifications can be made to the utility model without departing from the principles and spirit of the utility model defined in the claims. Therefore, the detailed description of the embodiments of the disclosure is only used for explanation, not for limiting the utility model, and the protection range is defined by the content of the claims.
Claims
1. A nitrogen oven for uniform drying, characterized in that, The device includes a housing body (1), with a nitrogen transfer chamber at the upper end and a baking chamber (2) at the lower end. A heating assembly for heating nitrogen is installed inside the nitrogen transfer chamber. A gas supply device (3) is located between the baking chamber (2) and the nitrogen transfer chamber. A gas guiding structure is located at the lower end of the gas supply device (3), and the gas guiding structure includes a longitudinal section connected to the outlet of the gas supply device (3). A guide plate (41) is connected to a flow divider plate (42). The flow divider plate (42) is defined with a first end (4-1) and a second end (4-2). The first end (4-1) is located directly below the air outlet of the air supply device (3). An air outlet (43) is provided on the flow divider plate (42). The diameter of the air outlet (43) at the first end (4-1) is smaller than the diameter of the air outlet (43) at the second end (4-2).
2. The nitrogen oven for uniform drying according to claim 1, characterized in that, The heating assembly includes a heating chamber (51) disposed in a nitrogen transfer chamber, a heating tube (52) disposed in the heating chamber (51), and the heating chamber (51) is connected to the gas delivery device (3).
3. The nitrogen oven for uniform drying according to claim 1, characterized in that, The air supply device (3) is a fan.
4. A nitrogen oven for uniform drying according to claim 1, characterized in that, The baking chamber (2) has multiple L-shaped strips (6) spaced vertically on its side wall, and two L-shaped strips (6) together limit the placement plate (7).
5. A nitrogen oven for uniform drying according to claim 4, characterized in that, The shelf (7) has multiple through holes (71).
6. A nitrogen oven for uniform drying according to claim 3, characterized in that, A horizontal guide plate (8) is provided at the air inlet of the fan.