Hot air recovery device and drying oven

Abstract

The hot air recovery device is used for extracting hot air escaping from an inlet and an outlet of the drying oven, the hot air recovery device comprises an air collection cover, an exhaust pipe and a fan, the air collection cover is arranged over the inlet and the outlet of the drying oven, an opening is formed in the bottom of the air collection cover, the interior of the air collection cover is a cavity, and the exhaust pipe is arranged in the cavity. The top of the air collecting cover is communicated with one end of the exhaust pipe, the fan is arranged on the exhaust pipe, the other end of the exhaust pipe is communicated with the drying oven, the fan is used for sucking hot air into the drying oven, a plurality of partition plates are arranged in the air collecting cover, and the partition plates are arranged in the air collecting cover. The opening is divided into a plurality of air inlets by the partition plates, and the cavity is divided into a plurality of air guide cavities by the partition plates. According to the drying oven, hot air escaping from the inlet and the outlet of the drying oven can be uniformly extracted, and the escaping hot air flows into the drying oven through the exhaust pipe and is recycled, so that the energy consumption of the drying oven is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oven equipment, and more specifically, to a hot air recovery device and an oven. Background Art

[0002] During the production process of lithium battery base films, it is necessary to stretch the films longitudinally and transversely. Among them, when stretching the films transversely, a transverse stretching machine is required. The transverse stretching machine includes a transverse stretching oven and a transverse stretching track. The transverse stretching oven is used to heat the film material, and the transverse stretching track is used to stretch the film transversely. Due to the need to avoid the transverse stretching track and the film material, large openings need to be provided on both sides of the transverse stretching oven as the entrances and exits of the oven.

[0003] However, when the transverse stretching oven is working, the hot air inside the oven will escape from the entrances and exits of the oven to the outside of the oven. At the same time, the cold air outside the oven will enter the inside of the oven from the entrances and exits of the oven, resulting in a decrease in the temperature inside the oven. In order to ensure a constant temperature inside the oven, it is necessary to heat the air inside the oven to the target temperature, thereby increasing the energy consumption of the oven. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a hot air recovery device and an oven, which can evenly extract the hot air escaping from the entrances and exits of the oven, and flow the escaping hot air into the oven through the suction pipe for recycling, thereby reducing the energy consumption of the oven.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A hot air recovery device for extracting the hot air escaping from the entrances and exits of the oven, comprising a wind collecting hood, a suction pipe and a fan. The wind collecting hood is arranged directly above the entrances and exits of the oven. An opening is provided at the bottom of the wind collecting hood. The inside of the wind collecting hood is a cavity. The top of the wind collecting hood is communicated with one end of the suction pipe. The fan is arranged on the suction pipe. The other end of the suction pipe is communicated with the oven. The fan is used to draw the hot air into the oven. A plurality of partition plates are arranged inside the wind collecting hood. The plurality of partition plates divide the opening into a plurality of air inlets and divide the cavity into a plurality of air guiding cavities.

[0007] As a further improvement of the above technical solution, the wind collecting hood is integrally in the shape of a wide - amplitude horn structure, and the large end of the wide - amplitude horn structure is arranged downward.

[0008] As a further improvement of the above technical solution, the partition plates are straight plates or bent plates.

[0009] As a further improvement of the above technical solution, the partition plates are symmetrically distributed along the central axis of the wind collecting hood.

[0010] As a further improvement of the above technical solution, the air collecting hood includes a first hood body and a second hood body. The bottom of the first hood body is communicated with the top of the second hood body. One end of the air extraction pipe is communicated with the top of the first hood body. The opening is arranged at the bottom of the second hood body. A plurality of the partition plates are arranged inside the second hood body.

[0011] As a further improvement of the above technical solution, the air extraction pipe, the first hood body and the second hood body are fastened and connected by screws, and a gasket is arranged at the splicing gap among the three.

[0012] As a further improvement of the above technical solution, a mesh partition plate is arranged between the first hood body and the second hood body.

[0013] As a further improvement of the above technical solution, the overall shape of the first hood body is a trapezoidal structure.

[0014] As a further improvement of the above technical solution, a plurality of the air collecting hoods are provided. A plurality of the air collecting hoods are arranged side by side on one side of the oven. The air extraction pipe includes a main pipe and a plurality of branch pipes communicating with the main pipe. A plurality of the branch pipes are respectively communicated with a plurality of the air collecting hoods.

[0015] As a further improvement of the above technical solution, the air collecting hood is fixed on one side of the oven through a fastener.

[0016] An oven includes a box body. The box body is provided with a feed inlet and a discharge outlet. The feed inlet and the discharge outlet allow a film to move through. The above-mentioned hot air recovery device is arranged above both the feed inlet and the discharge outlet.

[0017] The beneficial effects of the present utility model are as follows: The present utility model provides a hot air recovery device and an oven. According to the principle that hot air flows from bottom to top, the hot air escaping from the inlet and outlet of the oven rises from bottom to top. At the same time, the fan generates negative pressure, and the hot air enters a plurality of air guiding cavities respectively from a plurality of air inlets at the bottom of the air collecting hood. The plurality of air guiding cavities can uniformly guide the hot air to the top of the air collecting hood. The air collecting hood is a wide-width horn structure, which can concentrate the hot air into a smaller space at the top, facilitating the hot air to converge into the air extraction pipe from the top of the air collecting hood. Finally, the fan pumps the hot air from the air extraction pipe into the oven interior. Thus, it can uniformly extract the hot air escaping from the inlet and outlet of the oven and flow the escaping hot air into the oven through the air extraction pipe for recycling, reducing the energy consumption of the oven. Description of the Drawings

[0018] The present utility model will be further described below with reference to the drawings and embodiments.

[0019] Figure 1It is a schematic structural diagram provided by an embodiment of the present utility model;

[0020] Figure 2 It is Figure 1 a schematic structural diagram of the air collecting hood and the exhaust duct in

[0021] Figure 3 It is Figure 2 a schematic internal structure diagram of the air collecting hood in

[0022] Description of the drawings: 100 - oven, 110 - air collecting hood, 120 - exhaust duct, 130 - fan, 140 - opening, 150 - partition board, 160 - first cover body, 170 - second cover body, 180 - gasket, 190 - mesh partition board, 200 - main pipeline, 210 - branch pipeline, 220 - fastener. Detailed implementation manners

[0023] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the creation of the present utility model can be combined interactively without conflicting with each other.

[0024] Please refer to Figures 1 to 3 , an oven 100 provided by an embodiment of the present utility model, including a box body, the box body is provided with a feed inlet and a discharge outlet, and the feed inlet and the discharge outlet allow the film to move through.

[0025] A hot air recovery device is provided at both the feed inlet and the discharge outlet. The hot air recovery device includes an air collecting hood 110, an exhaust duct 120 and a fan 130. The air collecting hood 110 is arranged directly above the feed inlet or the discharge outlet. An opening 140 is provided at the bottom of the air collecting hood 110. The inside of the air collecting hood 110 is a cavity. The top of the air collecting hood 110 is communicated with one end of the exhaust duct 120. The fan 130 is arranged on the exhaust duct 120. The other end of the exhaust duct 120 is communicated with the oven 100. The fan 130 is used to draw the hot air into the oven 100. A plurality of partition boards 150 are arranged inside the air collecting hood 110. The plurality of partition boards 150 divide the opening 140 into a plurality of air inlets and divide the cavity into a plurality of air guiding cavities.

[0026] Specifically, according to the principle that hot air flows from bottom to top, the hot air escaping from the inlet and outlet of the oven 100 rises upward from bottom. At the same time, the fan 130 generates negative pressure, and the hot air enters multiple air guide cavities respectively from multiple air inlets at the bottom of the air collecting hood 110. The multiple air guide cavities can evenly guide the hot air to the top of the air collecting hood 110. The air collecting hood 110 has a wide-width horn structure, which can concentrate the hot air into a smaller space at the top, facilitating the hot air to converge into the exhaust duct 120 from the top of the air collecting hood 110. Finally, the fan 130 sucks the hot air from the exhaust duct 120 into the oven 100. Thus, it can evenly extract the hot air escaping from the inlet and outlet of the oven 100, and flow the escaping hot air into the oven 100 through the exhaust duct 120 for recycling, reducing the energy consumption of the oven 100.

[0027] Furthermore, the partition separator 150 is a straight plate or a bent plate, and the partition separator 150 is symmetrically distributed along the central axis of the air collecting hood 110. In this embodiment, a straight plate is arranged along the central axis of the air collecting hood 110, and multiple bent plates are symmetrically arranged on both sides of the central axis of the air collecting hood 110. The multiple bent plates are bent at different angles according to the wide-width horn structure of the air collecting hood 110. Thus, the hot air flowing into the air guide cavity can be evenly converged to the top of the air collecting hood 110.

[0028] Furthermore, the air collecting hood 110 includes a first hood body 160 and a second hood body 170. The bottom of the first hood body 160 is communicated with the top of the second hood body 170. One end of the exhaust duct 120 is communicated with the top of the first hood body 160, and the opening 140 is arranged at the bottom of the second hood body 170. The first hood body 160 is integrally in a trapezoidal structure, and several partition separators 150 are arranged inside the second hood body 170. The trapezoidal first hood body 160 can reduce the ineffective reflection of the wind field inside the structure, improve the utilization of the air duct, and reduce the pipeline pressure.

[0029] Specifically, the exhaust duct 120, the first hood body 160 and the second hood body 170 are firmly connected by screws, and a gasket 180 is arranged at the splicing gap among the three, so as to improve the sealing performance of the overall structure and prevent the internal hot air from escaping.

[0030] Furthermore, a mesh partition 190 is arranged between the first hood body 160 and the second hood body 170. When the hot air in the second hood body 170 flows to the first hood body 160, it needs to pass through the mesh partition 190. Thus, the hot air can be more evenly distributed.

[0031] For the entrances and exits of some ovens 100 with relatively large width dimensions, a plurality of air collecting hoods 110 are provided to meet the usage requirements of the width. Specifically, the plurality of air collecting hoods 110 are arranged side by side on one side of the oven 100. The air extraction pipe 120 includes a main pipe 200 and a plurality of branch pipes 210 communicating with the main pipe 200. The plurality of branch pipes 210 are respectively communicated with the plurality of air collecting hoods 110. After the hot air enters each air collecting hood 110, it respectively converges into the main pipe 200 from each branch pipe 210. Finally, it flows back into the oven 100 from the main pipe 200. Thus, the layout of the pipeline can be reduced, making the overall equipment beautiful and simple. Moreover, the cost of the equipment is reduced.

[0032] The above is a specific description of the preferred embodiment of the present invention, but the present invention is not limited to the described embodiment. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present invention. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A hot air recovery device for extracting the hot air escaping from the inlet and outlet of an oven, characterized in that, It includes an air collecting hood, an exhaust duct and a fan. The air collecting hood is arranged directly above the inlet and outlet of the oven. An opening is provided at the bottom of the air collecting hood. The interior of the air collecting hood is a cavity. The top of the air collecting hood is communicated with one end of the exhaust duct. The fan is arranged on the exhaust duct. The other end of the exhaust duct is communicated with the oven. The fan is used to draw hot air into the oven. A number of partition plates are arranged inside the air collecting hood. The number of the partition plates divides the opening into multiple air inlets and divides the cavity into multiple air guiding cavities.

2. The hot air recovery device according to claim 1, wherein, The air collecting hood is integrally in a wide-width horn structure, and the large end of the wide-width horn structure is arranged downward.

3. A hot air recovery device according to claim 1, characterized in that, The partition plates are straight plates or bent plates.

4. A hot air recovery device according to claim 1, wherein, The partition plates are symmetrically distributed along the central axis of the air collecting hood.

5. A hot air recovery device according to claim 1, characterized in that, The air collecting hood includes a first hood body and a second hood body. The bottom of the first hood body is communicated with the top of the second hood body. One end of the exhaust duct is communicated with the top of the first hood body. The opening is provided at the bottom of the second hood body. A number of the partition plates are arranged inside the second hood body.

6. The hot air recovery device according to claim 5, wherein The exhaust duct, the first hood body and the second hood body are tightly connected by screws, and gaskets are provided at the splicing gaps between the three.

7. A hot air recovery device according to claim 5 or 6, characterized in that, A mesh partition is arranged between the first hood body and the second hood body.

8. A hot air recovery device according to claim 5, characterized in that, The first hood body is integrally in a trapezoidal structure.

9. A hot air recovery device according to claim 1, characterized in that, A number of the air collecting hoods are provided. The number of the air collecting hoods are arranged side by side on one side of the oven. The air collecting hoods are fixed on one side of the oven by fasteners. The exhaust duct includes a main duct and a number of branch ducts communicating with the main duct. The number of the branch ducts are respectively communicated with the number of the air collecting hoods.

10. An oven, comprising a box body, wherein the box body is provided with a feed inlet and a discharge outlet, and the feed inlet and the discharge outlet allow a film to move through, characterized in that, The hot air recovery device according to any one of claims 1 to 9 is provided above both the feed inlet and the discharge outlet.

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