Drying oven

Abstract

The utility model belongs to the technical field of ovens. The utility model discloses a drying oven which comprises a first oven body and a second oven body, and the second oven body is arranged in the first oven body; a first heating area is arranged between the first box body and the second box body, and at least one first heating mechanism is arranged in the first heating area; a second heating area is arranged in the second box body, at least two compartments are arranged in the second heating area in a separated mode, each compartment is provided with a second heating mechanism, and each compartment is communicated with the second box body; a circulating device is further arranged in the second box body and used for achieving gas circulation in the second box body. The temperature distribution of the drying oven is uniform, so that the processing degrees of products in different areas are uniform; the drying oven can process a plurality of products at the same time, and efficiency is higher.

Description

Technical Field

[0001] The present application belongs to the technical field of ovens, and in particular to an oven. Background Art

[0002] The oven is a common drying equipment, which is widely used in various fields. The oven usually processes the products in the oven by circulating hot air. However, the air volume and heat distribution inside the oven in the related art are uneven, which makes the performance of the processed products uneven. The uneven temperature distribution of the oven will lead to uneven processing degree of products in different areas of the oven, so that the oven can only process a small number of products at a time.

[0003] For example, when the flexible copper clad laminate is subjected to a high-temperature imidization process in an oven, the oven used can only process a small number of products at a time, and the efficiency is low. In addition, the temperature distribution in the oven is uneven, resulting in uneven ripening or imidization of products in different areas, which further causes uneven performance of the finished flexible copper clad laminate. Utility Model Content

[0004] The embodiment of the present application provides an oven that can process multiple products at the same time, and the temperature distribution in the oven is uniform, thereby improving the working efficiency and cooking uniformity of the oven.

[0005] An embodiment of the present application provides an oven, which includes: a first box body and a second box body, the second box body is arranged inside the first box body; a first heating area is arranged between the first box body and the second box body, and at least one first heating mechanism is arranged in the first heating area; a second heating area is arranged inside the second box body, and at least two compartments are separated in the second heating area, each compartment is provided with a second heating mechanism, and each compartment is interconnected with the second box body; a circulation device is also arranged inside the second box body, and the circulation device is used to realize gas circulation in the second box body.

[0006] Furthermore, the first heating area and the second heating area are connected to each other.

[0007] Furthermore, the second heating area is located at the bottom of the second box body, and a partition for placing the items to be processed is provided at the junction of the second heating area and the inner cavity of the second box body, and a plurality of through holes are arranged on the partition; and a plurality of isolation strips are staggered on the side of the partition away from the second heating area, and each isolation strip surrounds a plurality of areas for placing the items to be processed on the surface of the partition.

[0008] Furthermore, each compartment is also provided with a temperature measuring device.

[0009] Furthermore, the oven also includes a control device for adjusting the heating temperature of the first heating area and the second heating area.

[0010] Furthermore, an air outlet door and an air return door are provided on the side wall of the first box body, and the position of the air outlet door along the height direction of the first box body is higher than that of the air return door.

[0011] Furthermore, both the air outlet door and the air return door are provided with air door adjusting parts for adjusting their own openings.

[0012] Furthermore, the oven also includes a ventilation device, which is connected to the first box body and includes a gas supply pipeline for inputting protective gas and an exhaust pipeline for exhausting protective gas.

[0013] Furthermore, the air supply pipeline is provided with an air intake valve for adjusting the air intake rate; the exhaust pipeline is provided with an air outlet valve for adjusting the air outlet rate.

[0014] Furthermore, a heat exchange mechanism for exchanging heat is also provided between the air supply pipeline and the exhaust pipeline; the heat exchange mechanism also includes a liquid storage chamber, a first valve and a second valve, and the first valve and the second valve are respectively located in the front and rear pipelines of the liquid storage chamber.

[0015] The embodiment of the present application provides an oven, in which a first heating area and a second heating area are arranged in different areas inside the oven, so that the degree of heating and maturation of the items to be processed can be flexibly controlled; and the second heating area is divided into a plurality of compartments to achieve high-temperature maturation of a plurality of items to be processed at the same time, thereby further improving the processing efficiency of the oven; at the same time, a circulation device is arranged inside the second box body to cooperate with an air outlet door and an air return door arranged with a height difference, so that the heat flow circulation inside the second box body is controlled to be "from bottom to top", and the cold air mass is discharged in time, thereby further ensuring the maturation uniformity of the items to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an oven in one embodiment of the present application;

[0017] Figure 2 This is a schematic cross-sectional structural diagram of an oven in the first embodiment of the present application;

[0018] Figure 3 For along Figure 2 Sectional projection of the middle oven in the AA direction;

[0019] Figure 4 This is a schematic diagram of the structure of the second box in one embodiment of the present application;

[0020] Figure 5 This is a schematic cross-sectional structural diagram of an oven in the second embodiment of the present application;

[0021] Figure 6 This is a schematic diagram of a top view of a partition in one embodiment of the present application;

[0022] Figure 7 This is a schematic cross-sectional structural diagram of an oven in a third embodiment of the present application;

[0023] Figure 8 This is a schematic diagram of the connection relationship of the control device in one embodiment of the present application;

[0024] Fig. 9 This is a schematic diagram of the connection relationship of the control device in another embodiment of the present application;

[0025] Fig.10 This is a schematic diagram of the structure of a ventilation device in one embodiment of the present application;

[0026] Fig.11 This is a schematic diagram of the cross-sectional structure of an oven in the fourth embodiment of the present application.

[0027] In the figure: oven 100, first box body 11, second box body 12, partition 121, through hole 1211, isolation strip 1212, through hole adjustment member 1213, air outlet door 111, return air door 112, air door adjustment member 113, first heating area 13, first heating mechanism 131, second heating area 14, compartment 141, second heating mechanism 142, circulation device 15, temperature measuring device 16, speed measuring device 17, control device 18, ventilation device 19, air supply pipeline 191, air inlet valve 1911, exhaust pipeline 192, exhaust valve 1921, heat exchange mechanism 193, liquid storage chamber 1931, first valve 1932, second valve 1933, first oxygen measuring device 21, second oxygen measuring device 22. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0029] The present application embodiment provides a Figure 1 The oven 100 shown. The oven 100 includes a first box body 11, a second box body 12 and a circulation device 15. The second box body 12 is fixedly installed in the space enclosed by the first box body 11, and the length, width and height directions of the first box body 11 and the second box body 12 are arranged to be consistent, and the items to be processed can be placed in the second box body 12 for heating and maturation treatment. Among them, the space between the first box body 11 and the second box body 12 is divided into a first heating area 13 along the four sides of the second box body 12 for heating the second box body 12. The first heating area 13 can be arranged to surround the second box body 12. In this embodiment, the first heating area 13 is located on both sides of the length direction of the second box body 12. As shown Figure 2As shown, two first heating mechanisms 131 are installed in the first heating area 13, and are respectively located in the first heating areas 13 on both sides of the length direction of the second box body 12. More first heating mechanisms 131 can be installed in the first heating area 13, and multiple first heating mechanisms 131 can increase the heating rate of the first heating area 13. The oven 100 in the related art can usually only process one product at a time. Although the oven 100 can accommodate more products by increasing the volume and capacity of the oven 100, the heat distribution in the oven 100 is uneven due to the increase in the volume of the second box body 12 and the increase in the number of products in the oven 100, so that the performance of the products processed by the oven 100 is uneven. By arranging the first heating mechanisms 131 at certain intervals, the heat distribution can be more uniform when the first heating area 13 heats the second box body 12. The inner cavity of the second box 12 is divided into a second heating area 14 along its own height direction. Similarly, the second heating area 14 can be located at least one of the top or bottom of the second box 12 according to the gas flow in the second box 12. In this embodiment, the second heating area 14 is located at the bottom of the second box 12. The second heating area 14 is used to adjust the temperature of each area in the second box 12 so that the temperature of each area in the second box 12 tends to be consistent. The second heating area 14 is divided into at least two compartments 141 by multiple groups of mutually vertically staggered partitions, and each compartment 141 is equipped with a second heating mechanism 142. Through multiple mutually independently heated compartments 141, different areas in the second box 12 can be heated separately, so that the heat distribution in the second box 12 is more uniform, and different heating and maturation requirements are met at the same time. Each compartment 141 is interconnected with the second box 12, and the hot air flow can enter each compartment 141 from the inner cavity of the second box 12. The first heating mechanism 131 is used to adjust the overall heating temperature in the second box 12, and the second heating mechanism 142 is used to adjust the temperature in each area separated by the compartment 141 in the second box 12, so that the heating temperature in different areas of the second box 12 tends to be consistent, so that the performance of the processed items is uniform. The circulation device 15 is fixedly installed in the second box 12, and is used to realize the heat flow circulation in the second box 12. Specifically, in this embodiment, the circulation device 15 is a plurality of groups of circulation fans, and each group of circulation fans is installed on the two inner side walls in the width direction of the second box 12. Each group of circulation fans is arranged in a specific order to ensure that the hot air flow inside the second box 12 can form a "bottom-up" heat flow circulation.

[0030] As an optional embodiment, the first heating area 13 and the second heating area 14 are connected to each other through the inner cavity of the second box 12. Driven by the circulation device 15, the hot air flow can pass through the first heating area 13, the second heating area 14 and the second box 12 in sequence, and then flow from the second box 12 to the first heating area 13, so as to circulate in the oven 100, thereby further ensuring the uniformity of heating and maturation of each item to be processed in the oven 100. When the first heating area 13, the second heating area 14 and the second box 12 are all connected to each other, the first heating area 13 can transfer heat to the second box 12 through the hot air flow, thereby improving the efficiency of heat transfer. In addition, the first heating mechanism 131 in the first heating area 13 and the multiple second heating mechanisms 142 in the second heating area 14 conduct heat and transfer to each inner wall in the oven 100, further improving the heating efficiency of the oven 100. At the same time, a circulation device 15 may also be provided in the first heating area 13 and / or the second heating area 14 to promote heat flow circulation between the first heating area 13 , the second heating area 14 and the second box 12 .

[0031] As an optional implementation, Figure 3 As shown, the junction between the inner cavity of the second box body 12 and the second heating area 14, that is, the top of each compartment 141 is fixedly connected with a partition 121, and a plurality of through holes 1211 are arranged on the surface of the partition 121 corresponding to the position of each compartment 141. The compartment 141 of the second heating area 14 is connected to the inner cavity of the second box body 12 through the through holes 1211, and the hot air flow can enter the second box body 12 from the compartment 141 through the through holes 1211. Figure 4 As shown, the upper surface of the partition 121 is also provided with multiple groups of isolation strips 1212 which are vertically staggered with each other. Each isolation strip 1212 encloses multiple processing areas for placing the items to be processed on the upper surface of the partition 121. The isolation strips 1212 can prevent the items in adjacent processing areas from affecting each other. Moreover, each processing area corresponds to the arrangement position of the compartment 141 in the second heating area 14. The second heating mechanism 142 in a single compartment 141 can heat the corresponding processing area separately, thereby realizing the temperature control of different processing areas, meeting different heating and maturation requirements, and further making the temperature of each processing area in the second box 12 tend to be consistent.

[0032] As an optional implementation, Figure 5As shown, an air outlet door 111 is provided on the side wall in the length direction of the first box 11, and an air return door 112 is also provided on the other side wall opposite to the first box 11. Among them, along the height direction of the first box 11, the position of the air outlet door 111 is higher than the air return door 112, so as to cooperate with each group of circulating fans in the circulation device 15 in the second box 12 to realize the "bottom-to-top" hot air flow circulation path, and further ensure that the objects to be processed in the second box 12 are heated uniformly. The specific principle is that since the hot air mass is easy to be in the upper position inside the oven 100, and the cold air mass is easy to accumulate in the lower position inside the oven 100, setting the air flow circulation path inside the oven 100 to "bottom-to-top" makes it easier to "squeeze" the cold air mass from the bottom to the upper air outlet door 111 for discharge, so as to reduce the adverse effect of the cold air mass on the ripening uniformity of the objects to be processed. At the same time, both the air outlet door 111 and the return air door 112 are provided with an air door adjusting member 113 for adjusting their opening. The air door adjusting member 113 can be adjusted to control the opening size of the air outlet door 111 and the return air door 112, thereby controlling the exchange relationship between the inside of the oven 100 and the outside gas. On the one hand, before heating and aging, the staff can first close the return air door 112 by adjusting the air door adjusting member 113, and open the air outlet 122, and then input the protective gas to pre-exhaust the oxygen and the like inside the oven 100. After the exhaust is completed, the air outlet 122 is closed and the heating and aging is started to realize the working condition of "closed oxygen-free environment heating"; on the other hand, during the heating and aging process, the air door adjusting member 113 can also be adjusted to open the return air door 112 and the air outlet 122 at the same time, and the opening of the two can be controlled to indirectly control the frequency of gas exchange between the inside of the oven 100 and the outside, thereby realizing the working condition of "semi-open low-oxygen environment heating".

[0033] As an optional implementation, Figure 6 As shown, each through hole 1211 on the partition 121 is equipped with a through hole adjusting member 1213 for adjusting the size of the through hole 1211. The position of the through hole adjusting member 1213 corresponds to the position of the through hole 1211 one by one, and the size of the through hole 1211 can be adjusted by adjusting the opening and closing size of the through hole adjusting member 1213. Each through hole adjusting member 1213 is independently arranged, so that the through hole adjusting member 1213 can adjust the frequency of hot air flow exchange in a certain area separately, thereby meeting the different heating and maturation requirements of each object to be processed in the second box 12.

[0034] As an optional implementation, Figure 7As shown, each compartment 141 is also provided with a temperature measuring device 16. Each temperature measuring device 16 can detect the temperature of the gas in the corresponding compartment 141 individually. The first heating mechanism 131 and the second heating mechanism 142 can be regulated according to the temperature measured by the temperature measuring device 16; each compartment 141 is also provided with a speed measuring device 17. Each speed measuring device 17 can detect the flow rate of the gas entering the second box body 12 from the compartment 141 individually. The opening sizes of the air outlet door 111, the return air door 112 and the through-hole adjustment member 1213 are regulated according to the gas flow rate measured by the speed measuring device 17.

[0035] As an optional implementation, Figure 7 As shown, the oven 100 further includes a control device 18. The control device 18 can adjust the temperature, air volume, etc. in the oven 100.

[0036] As an optional implementation, Figure 8 As shown, the control device 18 can be electrically connected to the first heating mechanism 131, the second heating mechanism 142 and the temperature measuring device 16, respectively, so as to more conveniently control the temperature in the oven 100. The control device 18 can automatically adjust the first heating mechanism 131 and the second heating mechanism 142 according to the temperature measured by the temperature measuring device 16. A temperature range can be set according to the processing temperature required for the item to be processed, and the control device 18 can adjust the first heating mechanism 131 according to whether the maximum temperature measured by all the temperature measuring devices 16 is within the preset temperature range. When the measured maximum temperature is higher than the temperature range, the first heating mechanism 131 is turned off or the output power of the first heating mechanism 131 is reduced; when the measured maximum temperature is lower than the temperature range, the first heating mechanism 131 is turned on or the output power of the first heating mechanism 131 is increased.

[0037] When the maximum temperature measured by all the temperature measuring devices 16 is within the temperature range, the control device 18 can adjust the second heating mechanism 142 according to whether the temperature measured by the temperature measuring device 16 is within the temperature range; when the temperature measured by the temperature measuring device 16 in a compartment 141 is lower than the temperature range, the second heating mechanism 142 in the compartment 141 is turned on or the output power of the second heating mechanism 142 in the compartment 141 is increased. Through the overall control of the first heating mechanism 131 by the control device 18 and the sub-control of each second heating mechanism 142, it is ensured that the heat received by the objects to be processed in the oven 100 is always under the control of the staff, and the uniformity of heating and curing of multiple objects to be processed by the oven 100 is further improved.

[0038] As an optional implementation, Fig. 9As shown, the control device 18 can be electrically connected to the damper adjustment member 113, the through-hole adjustment member 1213 and the speed measuring device 17, respectively, so as to more conveniently control the gas flow rate in the oven 100. The control device 18 can automatically adjust the opening sizes of the air outlet door 111, the return air door 112 and the through-hole 1211 through the damper adjustment member 113 and the through-hole adjustment member 1213 according to the speed measured by the speed measuring device 17. A flow rate range can be set according to the gas flow rate required by the object to be processed. The control device 18 can adjust the opening sizes of the air outlet door 111 and the return air door 112 through the damper adjustment member 113 according to whether the maximum gas flow rate measured by all the speed measuring devices 17 is within the preset flow rate range; when the maximum gas flow rate measured is higher than the flow rate range, the opening sizes of the air outlet door 111 and the return air door 112 are reduced; when the maximum gas flow rate measured is lower than the flow rate range, the opening sizes of the air outlet door 111 and the return air door 112 are increased.

[0039] When the maximum speed measured by the speed measuring device 17 is within the preset flow rate range, the control device 18 can adjust the opening size of the through hole 1211 through the through hole adjustment member 1213 according to whether the gas flow rate measured by the speed measuring device 17 is within the flow rate range; when the temperature measured by the speed measuring device 17 in a certain compartment 141 is lower than the preset threshold range, the opening size of the through hole 1211 is increased.

[0040] As an optional implementation, Figure 7 As shown, the oven 100 also includes a ventilation device 19, which is connected and installed on the first box body 11. The ventilation device 19 includes a gas supply pipeline 191 for inputting protective gas and an exhaust pipeline 192 for exhausting protective gas. In this embodiment, the protective gas is nitrogen. The ventilation device 19 can provide a nitrogen environment for the inside of the oven 100, thereby reducing the adverse effects of residual oxygen in the oven 100 on the maturation of the processed items under the working condition of "closed oxygen-free environment heating". At the same time, the gas supply pipeline 191 is also provided with an air intake valve 1911 for adjusting the air intake rate; the exhaust pipeline 192 is also provided with an air outlet valve for adjusting the air outlet rate. By adjusting the opening of the air intake valve 1911 and the air outlet valve, the rate of nitrogen exchange in the oven 100 is controlled to reduce the waste of resources.

[0041] As an optional implementation, Fig.10As shown, a heat exchange mechanism 193 for exchanging heat is also provided between the gas supply pipeline 191 and the exhaust pipeline 192. The heat exchange mechanism 193 can exchange the heat of the gas between the gas supply pipeline 191 and the exhaust pipeline 192, reuse the heat in the exhaust pipeline 192, and reduce energy consumption. The heat exchange mechanism 193 also includes a liquid storage chamber 1931, a first valve 1932, and a second valve 1933. The liquid storage chamber 1931 can store condensate, cool the gas in the exhaust pipeline 192, and prevent the high-temperature gas from being directly discharged. The first valve 1932 and the second valve 1933 are respectively located in the front and rear pipelines of the liquid storage chamber 1931 to prevent gas leakage when the condensate in the liquid storage chamber 1931 is replaced.

[0042] As an optional implementation, Fig.11 As shown, the oven 100 also includes a first oxygen measuring device 21 for measuring the oxygen content in the oven 100 and a second oxygen measuring device 22 for measuring the oxygen content outside the oven 100. The first oxygen measuring device 21 is installed in the first box body 11, and the second oxygen measuring device 22 is installed outside the first box body 11. The first oxygen measuring device 21 can detect the oxygen content in the first box body 11, and if the oxygen content exceeds the standard value, an alarm is issued. The second oxygen measuring device 22 can detect the oxygen content in the environment outside the first box body 11, and if the oxygen content exceeds the standard value, an alarm is issued. The first oxygen measuring device 21 and the second oxygen measuring device 22 can make the oven 100 safer during use, thereby ensuring the personal safety of the staff.

[0043] As an optional embodiment, the control device 18 can be electrically connected to the first oxygen measuring device 21 and the ventilation device 19. When the first oxygen measuring device 21 detects that the oxygen content in the first box 11 exceeds a preset value, the control device 18 controls the ventilation device 19 to quickly replenish the protective gas in the oven 100.

[0044] In summary, the oven 100 in the present application is provided with a first heating area 13 and a second heating area 14, and the second heating area 14 can independently control the temperature of different areas in the oven 100, so that the heat distribution in the oven 100 is more uniform. The oven 100 can process multiple products and ensure the uniform performance of the products. The oven 100 is also provided with a plurality of air door through holes, etc., so as to ensure the uniformity of the air volume in different areas inside the oven 100, and further improve the uniformity and stability of the oven 100 during the aging process. The oven 100 is also provided with a ventilation device 19 and a heat exchange mechanism 193, which can further save the amount of protective gas and reduce the heat loss caused by gas exchange.

[0045] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. An oven, characterized in that: include: A first box and a second box, wherein the second box is arranged inside the first box; A first heating area is provided between the first box and the second box, and at least one first heating mechanism is provided in the first heating area; A second heating area is provided inside the second box, and at least two compartments are separated and provided in the second heating area, each of the compartments is provided with a second heating mechanism, and each of the compartments is interconnected with the second box; A circulation device is also provided inside the second box, and the circulation device is used to realize gas circulation in the second box.

2. The oven according to claim 1, characterized in that: The first heating area and the second heating area are connected to each other.

3. The oven according to claim 2, characterized in that: The second heating area is located at the bottom of the second box, and a partition for placing the items to be processed is provided at the junction of the second heating area and the inner cavity of the second box, and a plurality of through holes are arranged on the partition; A plurality of isolation strips are staggeredly arranged on the side of the partition away from the second heating area, and the isolation strips mutually surround a plurality of areas on the surface of the partition for placing the items to be processed.

4. The oven according to claim 1, characterized in that: Each of the compartments is also provided with a temperature measuring device.

5. The oven according to claim 1, characterized in that: The oven further includes a control device for regulating the heating temperatures of the first heating zone and the second heating zone.

6. The oven according to claim 1, characterized in that: An air outlet door and an air return door are provided on the side wall of the first box body, and the position of the air outlet door along the height direction of the first box body is higher than that of the air return door.

7. The oven according to claim 6, characterized in that: The air outlet door and the air return door are both provided with air door adjusting parts for adjusting their openings.

8. The oven according to claim 1, characterized in that: The oven further comprises a ventilation device, which is connected to the first box body and comprises a gas supply pipeline for inputting protective gas and an exhaust pipeline for exhausting protective gas.

9. The oven according to claim 8, characterized in that: The air supply pipeline is provided with an air intake valve for adjusting the air intake rate; The exhaust pipeline is provided with an exhaust valve for adjusting the exhaust rate.

10. The oven according to claim 8, characterized in that: A heat exchange mechanism for exchanging heat is also provided between the air supply pipeline and the exhaust pipeline; The heat exchange mechanism further includes a liquid storage chamber, a first valve and a second valve, wherein the first valve and the second valve are respectively located in front and rear pipelines of the liquid storage chamber.

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