Oxygen-content-adjustable oxygen-free drying oven

Abstract

The utility model discloses an oxygen-content-adjustable oxygen-free drying oven, and relates to the technical field of oxygen-free drying ovens. The electrochemical oxygen sensor and the temperature sensor in the drying oven body are used for monitoring the oxygen content and the temperature in the drying oven body, when the oxygen content in the drying oven body needs to be adjusted, inert gas or air is conveyed into the transfer box through the air inlet pipe, and under the heating effect of the electric heating rod and the disturbance effect of the homogenizing assembly, the oxygen content in the drying oven body can be adjusted. The temperature of the gas is monitored through the temperature measuring assembly, and when the temperature of the gas is heated to be consistent with the temperature of the gas in the drying oven body, high-temperature inert gas or air is conveyed into the drying oven body through the hot gas pipe; it is ensured that the temperature of the gas input into the oven body is consistent with the temperature in the oven body, the temperature of the gas in the oven body is prevented from changing, and therefore the processing stability of the oven is guaranteed, and the processing effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of anaerobic ovens, in particular to an anaerobic oven with adjustable oxygen content. Background Art

[0002] An anaerobic oven usually refers to an oven protected by inert gas. During the heating process of this oven, inert gas (such as nitrogen, argon, etc.) is introduced to exclude or dilute the oxygen in the oven, thereby creating a low-oxygen or even anaerobic environment. Due to the low oxygen content inside, it is commonly called an anaerobic oven during the sales process. Anaerobic ovens are widely used in many fields such as semiconductor processing, battery production, photovoltaic module processing, and food preservation processing.

[0003] In the prior art, the Chinese patent with the authorization announcement number CN216644780U discloses an inert gas-protected heat treatment oven. By adding a heating component when adding inert gas, the inert gas entering the interior of the outer shell can be all hot gas, ensuring the drying effect of the items.

[0004] The above prior art solutions have the following defects: Only a one-time heating of the inert gas is carried out through the second heating pipe during the process of the inert gas flowing into the interior of the outer shell, lacking a structure for continuously heating the inert gas to make its temperature consistent with the temperature inside the outer shell, resulting in that the influence of the inert gas on the temperature inside the shell when it enters still needs to be further reduced to ensure the drying effect.

[0005] Therefore, an anaerobic oven with adjustable oxygen content is proposed. Summary of the Utility Model

[0006] The purpose of the utility model is: To solve the problems mentioned in the above background art, the utility model provides an anaerobic oven with adjustable oxygen content.

[0007] The utility model specifically adopts the following technical solutions to achieve the above purpose:

[0008] An anaerobic oven with adjustable oxygen content, including a base, on the top surface of the base, an oven body and an air extraction pump are fixedly installed. On the left side surface of the oven body, a transfer box is fixedly installed. On the inner wall surface of the transfer box, an electric heating rod is fixedly installed, and on the side wall, an air inlet pipe is fixedly installed. On the top wall and bottom wall of the transfer box, hot air pipes fixedly connected to the upper part and lower part of the right side surface of the oven body are fixedly installed. Inside the transfer box, a homogenizing component is provided. On the top surface of the transfer box, a temperature measuring component and a pressure equalizing component are fixedly installed. On the upper part and lower part of the left side surface of the oven body, exhaust pipes are fixedly installed. One end of each of the two exhaust pipes away from the oven body is fixedly connected to the input end of the air extraction pump. On the inner wall surface of the oven body, a heat preservation component is provided.

[0009] Further, air valves are provided on the surfaces of the intake pipe, the hot air pipe, and the exhaust pipe.

[0010] Further, the homogenization assembly includes mounting plates. The number of the mounting plates is two and they are arranged vertically. The mounting plates are fixedly installed on the inner wall surface of the transfer box. A first fan and a second fan are fixedly installed between the opposite surfaces of the two mounting plates, and the first fan and the second fan are arranged in opposite directions.

[0011] Further, the temperature measuring assembly includes a mounting box. The mounting box is fixedly installed on the top surface of the transfer box. The mounting box is communicated with the inside of the transfer box. A first temperature sensor is fixedly installed on the top inner wall surface of the mounting box. The number of the temperature measuring assemblies is several.

[0012] Further, the air pressure balancing assembly includes a connecting pipe. The connecting pipe is fixedly installed on the surface of the transfer box and is communicated with the inside of the transfer box. An elastic ball is fixedly installed on the surface of the end of the connecting pipe away from the transfer box.

[0013] Further, the heat preservation assembly includes a heat preservation layer. The heat preservation layer is fixedly attached to the inner wall surface of the oven body. An isolation layer is fixedly attached to the inner surface of the heat preservation layer. The heat preservation layer is made of a high-temperature resistant heat preservation material, and the isolation layer is made of aluminum.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. The electrochemical oxygen sensor and the temperature sensor in the oven body are used to monitor the oxygen content and temperature inside it. When it is necessary to adjust the oxygen content in the oven body, an inert gas or air is transmitted into the transfer box through the intake pipe. Under the heating action of the electric heating rod and the disturbing action of the homogenization assembly, the gas in the transfer box is quickly and evenly heated. The temperature measuring assembly is used to monitor the temperature of the gas. When the gas temperature is heated to be the same as the gas temperature in the oven body, the high-temperature inert gas or air is transported into the oven body through the hot air pipe, ensuring that the temperature of the gas input into the oven body is the same as the temperature in the oven body, avoiding the change of the gas temperature in the oven body, thereby ensuring the stability of the oven processing, ensuring the processing effect, and flexibly adjusting the oxygen content inside the oven body by filling the inert gas or air;

[0016] 2. The exhaust pipes and the hot air pipes distributed in pairs up and down can meet the discharge requirements of the original gas in the oven body when gases with different densities are filled into the oven body. Description of the Drawings

[0017] Figure 1 is the front view of the three-dimensional structure of the present utility model;

[0018] Figure 2 is the front sectional view of the three-dimensional structure of the present utility model;

[0019] Figure 3 It is a side sectional view of the three-dimensional structure of the transfer box in the present utility model;

[0020] Reference numerals in the drawings: 1, base; 2, oven body; 3, transfer box; 4, electric heating rod; 5, intake pipe; 6, hot air pipe; 7, homogenizing assembly; 701, mounting plate; 702, first fan; 703, second fan; 8, temperature measuring assembly; 801, mounting box; 802, first temperature sensor; 9, air pressure equalizing assembly; 901, connecting pipe; 902, elastic ball; 10, exhaust pipe; 11, air valve; 12, air extraction pump; 13, heat preservation assembly; 131, heat preservation layer; 132, isolation layer. Specific embodiments

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. Generally, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0023] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0024] All the electrical components appearing in this text are electrically connected to an external main controller and 220V mains power, and the main controller can be a conventional known device such as a computer for control.

[0025] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inside", "outside", "above", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed when in use. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0026] As shown Figures 1 to 3 in the figure, an oxygen content adjustable anaerobic oven includes a base 1, an oven body 2 and an air extraction pump 12 are fixedly installed on the top surface of the base 1, a transfer box 3 is fixedly installed on the left side surface of the oven body 2, an electric heating rod 4 is fixedly installed on the inner wall surface of the transfer box 3 and an air inlet pipe 5 is fixedly installed on the side wall, heat pipes 6 fixedly connected to the upper part and the lower part of the right side surface of the oven body 2 are fixedly installed on both the top wall and the bottom wall of the transfer box 3, a homogenization component 7 is arranged inside the transfer box 3, a temperature measuring component 8 and a pressure equalization component 9 are fixedly installed on the top surface of the transfer box 3, exhaust pipes 10 are fixedly installed on both the upper part and the lower part of the left side surface of the oven body 2, and one ends of the two exhaust pipes 10 far away from the oven body 2 are fixedly connected to the input ends of the air extraction pump 12, and a heat preservation component 13 is arranged on the inner wall surface of the oven body 2.

[0027] More specifically, the electrochemical oxygen sensor and temperature sensor in the oven body 2 are used to monitor the oxygen content and temperature inside it. When it is necessary to adjust the oxygen content in the oven body 2, inert gas or air is transmitted into the transfer box 3 through the air inlet pipe 5. Under the heating action of the electric heating rod 4 and the disturbing action of the homogenization component 7, the gas in the transfer box 3 is quickly and evenly heated. The temperature measuring component 8 is used to monitor the temperature of the gas. When the gas temperature is heated to be the same as the gas temperature in the oven body 2, the high-temperature inert gas or air is transported into the oven body 2 through the heat pipe 6 to ensure that the temperature of the gas input into the oven body 2 is the same as the temperature in the oven body 2, avoiding the change of the gas temperature in the oven body 2, thereby ensuring the stability of oven processing and the processing effect, and realizing the flexible adjustment of the oxygen content inside the oven body 2 by filling inert gas or air; since the volume of the gas will change during the heating process, the pressure equalization component 9 is used to make the volume inside the transfer box 3 change elastically, avoiding the deformation of the transfer box 3 due to gas expansion. The air extraction pump 12 is used to suck and discharge the gas in the oven body 2, so that a negative pressure is formed inside the oven body 2, and the introduction of the gas is completed by the negative pressure action. Since the introduced gases are different, there are differences in the densities of different gases compared with the density of air. For example, the density of helium is less than the density of air, and the density of argon is greater than the density of air. When the density of the introduced gas is greater than the density of the gas in the oven body 2, it should enter the oven body 2 from the lower heat pipe 6, and the original gas is discharged from the upper exhaust pipe 10. When the density of the introduced gas is less than the density of the gas in the oven body 2, it should enter the oven body 2 from the upper heat pipe 6, and the original gas is discharged from the lower exhaust pipe 10. Therefore, the exhaust pipes 10 and the heat pipes 6 distributed in pairs up and down can meet the discharge requirements of the original gas in the oven body 2 when gases with different densities are filled into the oven body 2.

[0028] Air valves 11 are arranged on the surfaces of the air inlet pipe 5, the heat pipe 6 and the exhaust pipe 10.

[0029] Specifically, the inflow and discharge of gas are controlled by controlling the opening and closing of the gas valves 11 on the surfaces of the intake pipe 5 , the hot gas pipe 6 and the exhaust pipe 10 .

[0030] The homogenizing assembly 7 includes two mounting plates 701, which are arranged up and down. The mounting plates 701 are fixedly installed on the inner wall surface of the transfer box 3. A first fan 702 and a second fan 703 are fixedly installed between the opposite surfaces of the two mounting plates 701. The first fan 702 and the second fan 703 are arranged in opposite directions.

[0031] Specifically, the gas in the transfer box 3 is disturbed by the first fan 702 and the second fan 703 which are arranged in opposite directions, so that the gas flows up and down quickly, thereby making the gas temperature quickly uniform, ensuring that the temperature data measured by the temperature measuring component 8 is more accurate.

[0032] The temperature measuring component 8 includes an installation box 801, which is fixedly installed on the top surface of the transfer box 3. The installation box 801 is connected to the inside of the transfer box 3. A first temperature sensor 802 is fixedly installed on the top surface of the inner wall of the installation box 801. There are several temperature measuring components 8.

[0033] Specifically, the temperature measuring component 8 is arranged away from the electric heating rod 4 to ensure that the measured gas temperature data is away from the interference of the electric heating rod 4, thereby ensuring the accuracy of the temperature data and ensuring that the temperature difference between the gas flowing into the oven body 2 and the temperature inside the oven body 2 is maintained within a small range, thereby minimizing the impact of the temperature difference on the drying process.

[0034] The air pressure equalization assembly 9 includes a connecting pipe 901 , which is fixedly mounted on the surface of the transfer box 3 and communicated with the interior of the transfer box 3 . An elastic ball 902 is fixedly mounted on the surface of one end of the connecting pipe 901 away from the transfer box 3 .

[0035] Specifically, when the gas in the transfer box 3 is heated and expanded, the elastic ball 902 will expand, thereby enlarging the volume of the transfer box 3 in disguise, thereby preventing the transfer box 3 from deforming or exploding. In the process of filling the gas into the transfer box 3, it is possible to determine whether to stop filling the gas by monitoring the state of the elastic ball 902. When the elastic ball 902 is slightly deformed, it means that the gas has filled the transfer box 3, and it is necessary to stop filling the transfer box 3 with gas.

[0036] The insulation component 13 includes an insulation layer 131, which is fixedly attached to the inner wall surface of the oven body 2. An isolation layer 132 is fixedly attached to the inner surface of the insulation layer 131. The insulation layer 131 is made of high-temperature resistant insulation material, and the isolation layer 132 is made of aluminum.

[0037] Specifically, the heat insulation layer 131 is used to insulate the inside of the oven body 2, so that the oven body 2 can perform intermittent heating work, which is more energy-saving and environmentally friendly. The isolation layer 132 is used to protect the heat insulation layer 131 to prevent the heat insulation layer 131 from being damaged due to collision during the use of the oven body 2.

[0038] In summary: The electrochemical oxygen sensor and temperature sensor in the oven body 2 are used to monitor the oxygen content and temperature inside it. When it is necessary to adjust the oxygen content in the oven body 2, inert gas or air is transmitted into the transfer box 3 through the intake pipe 5. Under the heating action of the electric heating rod 4 and the disturbing action of the homogenization component 7, the gas in the transfer box 3 is quickly and evenly heated. The temperature measuring component 8 is used to monitor the temperature of the gas. When the gas temperature is heated to be the same as the gas temperature in the oven body 2, the high-temperature inert gas or air is transported into the oven body 2 through the hot gas pipe 6, ensuring that the temperature of the gas input into the oven body 2 is the same as the temperature in the oven body 2, avoiding changes in the gas temperature in the oven body 2, thereby ensuring the stability of oven processing and the processing effect. The flexible adjustment of the oxygen content inside the oven body 2 is achieved by filling inert gas or air; the exhaust pipes 10 and hot gas pipes 6 distributed in pairs up and down can meet the discharge requirements of the original gas in the oven body 2 when gases with different densities are filled into the oven body 2.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An oxygen-free oven with adjustable oxygen content, characterized in that: The invention comprises a base (1), wherein an oven body (2) and an air extraction pump (12) are fixedly mounted on the top surface of the base (1), a transfer box (3) is fixedly mounted on the left side surface of the oven body (2), an electric heating rod (4) is fixedly mounted on the inner wall surface of the transfer box (3), and an air inlet pipe (5) is fixedly mounted on the side wall, a hot air pipe (6) fixedly mounted on the top wall and the bottom wall of the transfer box (3) and fixedly connected to the upper and lower parts of the right side surface of the oven body (2), a homogenizing component (7) is arranged inside the transfer box (3), a temperature measuring component (8) and an air pressure equalizing component (9) are fixedly mounted on the top surface of the transfer box (3), an exhaust pipe (10) is fixedly mounted on the upper and lower parts of the left side surface of the oven body (2), the ends of the two exhaust pipes (10) away from the oven body (2) are fixedly connected to the input end of the air extraction pump (12), and a heat preservation component (13) is arranged on the inner wall surface of the oven body (2).

2. The oxygen-content adjustable oxygen-free oven according to claim 1, characterized in that: The surfaces of the air intake pipe (5), the hot air pipe (6) and the exhaust pipe (10) are all provided with air valves (11).

3. The oxygen-content adjustable oxygen-free oven according to claim 1, characterized in that: The homogenizing component (7) comprises a mounting plate (701), wherein the number of the mounting plates (701) is two and the mounting plates (701) are arranged up and down, and the mounting plates (701) are fixedly mounted on the inner wall surface of the transfer box (3), and a first fan (702) and a second fan (703) are fixedly mounted between the opposite surfaces of the two mounting plates (701), and the first fan (702) and the second fan (703) are arranged in opposite directions.

4. The oxygen-content adjustable oxygen-free oven according to claim 1, characterized in that: The temperature measuring component (8) comprises a mounting box (801), the mounting box (801) being fixedly mounted on the top surface of the transfer box (3), the mounting box (801) being connected to the interior of the transfer box (3), a first temperature sensor (802) being fixedly mounted on the top surface of the inner wall of the mounting box (801), and the number of the temperature measuring components (8) is several.

5. The oxygen-content adjustable oxygen-free oven according to claim 1, characterized in that: The air pressure equalizing assembly (9) comprises a connecting pipe (901), wherein the connecting pipe (901) is fixedly mounted on the surface of the transfer box (3) and is connected to the interior of the transfer box (3), and an elastic ball (902) is fixedly mounted on the surface of one end of the connecting pipe (901) away from the transfer box (3).

6. The oxygen-content adjustable oxygen-free oven according to claim 1, characterized in that: The thermal insulation component (13) comprises a thermal insulation layer (131), the thermal insulation layer (131) is fixedly attached to the inner wall surface of the oven body (2), an isolation layer (132) is fixedly attached to the inner surface of the thermal insulation layer (131), the thermal insulation layer (131) is a high temperature resistant thermal insulation material, and the isolation layer (132) is made of aluminum.

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