CN220239155U

CN220239155U - Oven

Info

Publication number: CN220239155U
Application number: CN202321765821.5U
Authority: CN
Inventors: 彭富国
Original assignee: Hunan Sanxing Precision Industry Co ltd
Current assignee: Hunan Sanxing Precision Industry Co ltd
Priority date: 2023-07-06
Filing date: 2023-07-06
Publication date: 2023-12-26
Anticipated expiration: 2033-07-06

Abstract

The oven provided by the embodiment of the application comprises an oven shell and a baking mechanism, wherein the baking mechanism is arranged in the oven shell; the oven shell is provided with a feeding hole and a discharging hole, the feeding hole is used for placing materials to be baked, and the discharging hole is used for discharging baked materials; the baking mechanism comprises an air-drying structure and a heating assembly, the air-drying structure comprises an air inlet part, an air outlet part and a ventilation pipe, and the air inlet part and the air outlet part are communicated with the ventilation pipe; the air outlet part comprises a first air outlet piece, and the first air outlet piece is provided with a plurality of air outlet nozzles; the heating assembly comprises a plurality of first heating elements, the first heating elements are arranged beside the first air outlet elements, and the air outlet nozzles are avoided; the first heating elements are arranged at intervals to be matched with the air drying structure to bake the materials in the oven. Therefore, the problem that the oven cannot meet the requirement that the temperature in the oven is kept uniform when the material is baked is solved.

Description

Oven

Technical Field

The utility model relates to the technical field of ovens, in particular to an oven.

Background

Baking the material by using the oven is a common procedure in producing and processing the material, after the surface of the material is coated with the coating, the material is baked by the oven, so that the preparation of the coating layer of the material can be completed, and in the baking process of the material, the oven has corresponding requirements.

When the material is baked in the oven, the temperature in the oven is required to be kept uniform, so that the material is heated uniformly, and the excessive baking of partial areas of a coating layer of the material or the baking effect of partial areas of the coating layer of the material is avoided.

In the prior art, the oven for baking materials cannot meet the requirement that the temperature in the oven is kept uniform when the materials are baked.

Disclosure of Invention

The utility model mainly aims to provide an oven, which aims to solve the problem that the oven cannot meet the requirement that the temperature in the oven is kept uniform when materials are baked.

In order to achieve the above object, the present utility model provides an oven, which comprises an oven housing, a baking mechanism, and a baking mechanism disposed in the oven housing; the oven shell is provided with a feeding hole and a discharging hole, the feeding hole is used for placing materials to be baked, and the discharging hole is used for discharging baked materials; the baking mechanism comprises an air-drying structure and a heating assembly, the air-drying structure comprises an air inlet part, an air outlet part and a ventilation pipe, and the air inlet part and the air outlet part are communicated with the ventilation pipe; the air outlet part comprises a first air outlet piece, and the first air outlet piece is provided with a plurality of air outlet nozzles; the heating assembly comprises a plurality of first heating elements, the first heating elements are arranged beside the first air outlet elements, and the air outlet nozzles are avoided; the first heating elements are arranged at intervals to be matched with the air drying structure to bake the materials in the oven.

Preferably, the air outlet comprises a second air outlet and the heating assembly comprises a second heating element; the first air outlet piece and the second air outlet piece are arranged above and below, and the second air outlet piece and the second heating piece are arranged at intervals.

Preferably, the number of the second heating elements is multiple, and the first heating elements and the second heating elements are staggered.

Preferably, the heating assembly comprises a third heating element, and the third heating element is arranged at the air inlet part.

Preferably, the air output of the first air outlet piece and the air output of the second air outlet piece are respectively larger than or equal to 70cm m/square meter and smaller than or equal to 150cm m/square meter.

Preferably, the second air outlet piece is provided with a plurality of air outlet nozzles, the air outlet nozzles are arranged in a conical shape, and the outer opening parts of the air outlet nozzles are positioned at the tip ends of the conical shapes.

Preferably, the outlet nozzle has a first mouth and a second mouth disposed opposite to each other, the first mouth having a diameter in a range of greater than or equal to 2 mm and less than or equal to 4 mm, and the second mouth having a diameter in a range of greater than or equal to 8 mm and less than or equal to 13 mm.

Preferably, at least one of the first air outlet member and the second air outlet member is provided with a filter device.

Preferably, the first heating element and the second heating element are respectively provided as a first infrared electrothermal tube and a second infrared electrothermal tube; the power range of the first infrared electrothermal tube and the second infrared electrothermal tube is more than or equal to 300w and less than or equal to 800w.

Preferably, the irradiation ranges of the first infrared electrothermal tube and the second infrared electrothermal tube are at least partially overlapped.

Preferably, the first infrared electrothermal tubes are arranged in a plurality, and the irradiation ranges of the adjacent first infrared electrothermal tubes are at least partially overlapped.

Preferably, a plurality of first air outlet pieces are provided, and a plurality of first air outlet pieces and a plurality of first heating pieces are alternately provided; the ratio of the distance between two adjacent first infrared electrothermal tubes to the width of the first air outlet piece between two adjacent first infrared electrothermal tubes is more than or equal to 1.2 and less than or equal to 1.5.

Preferably, the arrangement density of the first infrared electric heating tube in the length direction of the oven is between 4 and 8 counts/m.

Preferably, the first air outlet piece comprises a bottom plate and an air outlet plate arranged opposite to the bottom plate, and the bottom plate is obliquely arranged; the height of the inner space at the joint of the first air outlet piece and the ventilation pipe is larger than that of the inner space at the position, far away from the ventilation pipe, of the first air outlet piece.

Preferably, the air drying structure comprises a centrifugal fan, and a volute of the centrifugal fan is provided with two diversion ports which are arranged in a central symmetry manner; the two diversion openings are respectively communicated with the first air outlet piece and the second air outlet piece.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an oven according to the present utility model;

FIG. 2 is another schematic view of an oven according to the present utility model;

FIG. 3 is a schematic view of a baking mechanism of the oven according to the present utility model;

FIG. 4 is another schematic view of the baking mechanism of the oven according to the present utility model;

FIG. 5 is a schematic view of a first air outlet and a first heating element of the oven according to the present utility model;

FIG. 6 is a schematic view of a second air outlet and a second heating element of the oven according to the present utility model;

FIG. 7 is a schematic view of a first outlet of the oven according to the present utility model;

FIG. 8 is a schematic view of a second outlet of the oven according to the present utility model;

FIG. 9 is a schematic diagram of a centrifugal fan of an oven according to the present utility model;

FIG. 10 is a schematic view of the air outlet plate and air outlet of the oven according to the present utility model;

FIG. 11 is another schematic view of the air outlet plate and air outlet of the oven according to the present utility model;

reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

In order to solve the problem, this patent provides a, aims at solving the oven and can't satisfy the problem of the even demand of temperature maintenance in the oven when toasting the material.

For ease of understanding, the following detailed description of the embodiments of the present application is provided with reference to the accompanying drawings.

Referring to fig. 1-4, the oven includes an oven housing 100, a baking mechanism 200, the baking mechanism 200 being disposed within the oven housing 100; the oven shell 100 is provided with a feed inlet 110 and a discharge outlet 120, wherein the feed inlet 110 is used for placing materials to be baked, and the discharge outlet 120 is used for discharging baked materials; the baking mechanism 200 comprises an air-drying structure 210 and a heating assembly 220, wherein the air-drying structure 210 comprises an air inlet part 211, an air outlet part 212 and a ventilation pipe, and the air inlet part 211 and the air outlet part 212 are communicated with the ventilation pipe; the air outlet 212 includes a first air outlet 212a, and the first air outlet 212a has a plurality of air outlet nozzles 230; the heating assembly 220 includes a plurality of first heating elements 221, where the first heating elements 221 are disposed beside the first air outlet 212a, so as to avoid the air outlet nozzle 230; the plurality of first heating elements 221 are spaced apart to cooperate with the air drying structure 210 to toast the material in the oven.

In this embodiment, the oven housing 100 can store the heat generated by the baking mechanism 200 in the oven housing 100, and the oven housing 100 is provided with the material inlet 110 and the material outlet 120, so that a user can put in and discharge materials and can cooperate with other automation equipment to perform pipeline operation. The toasting mechanism 200 includes an air drying structure 210 and a heating assembly 220 to allow the material to be heated and air dried simultaneously. The gas entering from the gas inlet 211 moves to the gas outlet 212 through the ventilation pipe. The air outlet portion 212 includes a first air outlet member 212a, where the first air outlet member 212a has a plurality of air outlet nozzles 230, so that air can be uniformly blown out, and the air outlet portion is matched with the first heating member 221 disposed beside the first air outlet member 212a and avoiding the air outlet nozzles 230, so that heat exchange can be performed more uniformly on the air in the furnace under the condition of low flow velocity, and the effect of constant temperature in the furnace is achieved. The gas directly heated by the first heating member 221 is prevented from being blown toward the material, thereby preventing the material from being locally overheated to cause local overbaking. The first heating members 221 are arranged at intervals and are matched with the air drying structure 210, so that the rate of heat exchange of gas in the oven can be increased, and the oven can generate stable and proper temperature, so that the problem that the temperature uniformity in the oven is poor when the existing oven cannot meet the requirement of baking materials is solved.

When the material is baked in the oven, the material is required to be baked on the upper and lower sides so as to uniformly bake the material. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Referring to fig. 4-6, the air outlet 212 includes a second air outlet 212b, and the heating assembly 220 includes a second heating element 222; the first air outlet 212a and the second air outlet 212b are disposed above and below, and the second air outlet 212b and the second heating element 222 are disposed at intervals.

In this embodiment, the first air outlet member 212a and the second air outlet member 212b are disposed above and below the oven, and the second air outlet member 212b is spaced from the second heating member 222, so that the baking effect of the materials is the same or close to the baking effect of the materials. The mode that the upper and lower side set up makes the material pass from the centre, when carrying out pipelining in cooperation with other automation equipment, can also avoid single face to be heated and lead to the material to warp, realizes carrying out even toasting to the material.

It should be noted that there are various implementations of the first heating element 221 and the second heating element 222. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Optionally, the number of the second heating elements 222 is plural, and the first heating elements 221 and the second heating elements 222 are staggered.

In this embodiment, the number of the second heating elements 222 is plural, and the first heating elements 221 and the second heating elements 222 are staggered, so that the temperatures of the respective areas in the oven are kept the same or similar, thereby further improving the uniformity of the temperatures in the oven and the uniformity of the baking effect. In addition, the staggered arrangement of the first heating element 221 and the second heating element 222 can not cause the temperature of the local area to be too high, so that the excessive baking of materials is avoided.

It should be noted that, the air for drying the material reaches a preset temperature, so that the temperature in the oven can keep the temperature required by the user. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Referring to fig. 4 and 9, the heating assembly 220 includes a third heating member 223, and the third heating member 223 is disposed at an intake passage of the intake portion 211.

In the present embodiment, the third heating member 223 is provided at the air inlet portion 211 such that the air entering from the air inlet portion 211 is heated to a predetermined temperature by the third heating member 223, and the heated air is blown out from the first air outlet 212a and the second air outlet 212b of the air outlet portion 212 through the ventilation pipe. Thus, the temperature in the oven can be kept at the temperature required by the user while the material is air-dried.

It should be noted that the third heating member 223 directly heats the air, and there are various implementations, such as a heating wire, an electric heating tube, and the like.

It should be noted that, in order to adapt to different materials, the range of the air output of the first air outlet member 212a and the range of the air output of the second air outlet member 212b are required to meet the range required by the user, so that the user can adjust according to the actual needs. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Alternatively, the air output of the first air outlet 212a and the air output of the second air outlet 212b are respectively greater than or equal to 70 cm/square meter and less than or equal to 150 cm/square meter.

In this embodiment, when the weight of the material is smaller, the air output of the first air outlet piece 212a and the air output of the second air outlet piece 212b can be adjusted to a smaller air output in a range; when the weight of the material is large, the air output of the first air outlet piece 212a and the air output of the second air outlet piece 212b can be adjusted to a large air output in a range. Thus, the user can adjust according to actual needs.

It should be noted that, the air flows of the air blown out by the first air outlet member 212a and the second air outlet member 212b are required to meet the requirement of the air drying effect, so as to achieve a good air drying effect on the material. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Referring to fig. 4, 6, 10 and 11, the second air outlet 212b is provided with a plurality of air outlet nozzles 230, the air outlet nozzles 230 are tapered, and the outer openings of the air outlet nozzles 230 are located at the tapered tips.

In this embodiment, the air outlet nozzle 230 is disposed between the first air outlet member 212a and the second air outlet member 212b, and the air outlet nozzle 230 is tapered, and the external opening of the air outlet nozzle 230 is located at the tapered end, where the opening of the air outlet nozzle 230 near the material is smaller than the opening of the air outlet nozzle 230 far away from the material, so that the tapered air outlet can better drive the air around the air outlet to flow, that is, more air can be driven to flow without increasing the air outlet flow rate, which is beneficial to reducing the air pressure directly applied to the material, and meanwhile, the air flow rate of the air blown to the material can be improved, and the air drying effect and the air heat exchange effect can be improved.

It should be noted that, in order to adapt to different materials, the range of the air pressure of the air blown by the air outlet nozzle 230 meets the range required by the user, so that the user can adjust according to the actual needs. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Referring to fig. 10-11, the air outlet nozzle 230 has a first opening 231 and a second opening 232 disposed opposite to each other, wherein the diameter of the first opening 231 is greater than or equal to 2 mm and less than or equal to 4 mm, and the diameter of the second opening 232 is greater than or equal to 8 mm and less than or equal to 13 mm.

In this embodiment, the mouth of the air outlet nozzle 230 near the material is a first mouth 231, and the mouth of the air outlet nozzle 230 far from the material is a second mouth 232. The user can adjust the first opening 231 and the second opening 232 of the air outlet nozzle 230 within the range according to the actual needs, thereby changing the air pressure of the air blown out from the air outlet nozzle 230 so as to meet the actual needs of the user.

In order to reduce the fine particles such as outside dust and enter the stove through air-drying structure, reduce the pollution that the air-drying caused to the material, this application provides a preferred implementation mode.

Referring to fig. 7 and 8, at least one of the first air outlet member 212a and the second air outlet member 212b is provided with a filter device 240.

In this embodiment, at least one filtering device 240 is disposed in the first air outlet member 212a and the second air outlet member 212b, so that the content of impurities in the air blown out by the first air outlet member 212a and the second air outlet member 212b is low, which can reduce the pollution of the drying air flow to the material and keep the material clean.

It should be noted that, in order to adapt to different materials, the range of the power of the first heating element 221 and the range of the power of the second heating element 222 are required to meet the range required by the user, so that the user can adjust according to the actual needs. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Alternatively, the first heating member 221 and the second heating member 222 are provided as a first infrared electrothermal tube and a second infrared electrothermal tube, respectively; the power range of the first infrared electrothermal tube and the second infrared electrothermal tube is more than or equal to 300W and less than or equal to 800W.

In this embodiment, when the material needs to be heated at a higher temperature, the heating element can be adjusted to a higher power in the range; when the material needs a lower temperature for heating, the heating element can be adjusted to a lower power in the range. Thus, the user can adjust the heating element according to actual needs.

It should be noted that there are various implementations of the first infrared electrothermal tube and the second infrared electrothermal tube. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Optionally, the irradiation ranges of the first infrared electrothermal tube and the second infrared electrothermal tube at least partially coincide.

In this embodiment, the irradiation ranges of the first infrared electrothermal tube and the second infrared electrothermal tube are at least partially overlapped, so that the material can be heated by the first infrared electrothermal tube and the second infrared electrothermal tube at the same time when the irradiation ranges are overlapped, so as to obtain a uniform heating effect.

It should be noted that, in order to continuously heat the material during the baking process, the first infrared electrothermal tube and the second infrared electrothermal tube are required to continuously heat the material. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Referring to fig. 5-6, as shown in fig. 5-6, a plurality of first infrared electrothermal tubes are disposed, and irradiation ranges of adjacent first infrared electrothermal tubes are at least partially overlapped.

In this embodiment, the number of the first infrared electrothermal tube and the second infrared electrothermal tube is a plurality of and the irradiation ranges between the adjacent electrothermal tubes are at least partially overlapped, so that the material can be always in the irradiation range during baking, and the fluctuation of the radiation heating power in the irradiation range is smaller, so that the material can be continuously and uniformly heated.

It should be noted that, in order to adapt to different materials, the range of the ratio between the distance between two adjacent first infrared electrothermal tubes and the width of the first air outlet member 212a between two adjacent first infrared electrothermal tubes needs to meet the range required by the user, so that the user can adjust according to the actual needs. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Referring to fig. 5-6, as shown in fig. 5-6, the number of the first air outlet member 212a and the second air outlet member 212b is plural; the first air outlet 212a is provided in plurality, and the plurality of first air outlet 212a and the plurality of first heating elements 221 are alternately provided; the ratio of the distance between two adjacent first infrared electrothermal tubes to the width of the first air outlet piece 212a between two adjacent first infrared electrothermal tubes is in the range of more than or equal to 1.2 and less than or equal to 1.5, and the irradiation heating and the air drying heating are preferably matched within the range, so that the purpose of constant-temperature heating in the furnace is realized.

In this embodiment, when the material is difficult to dry, the user can adjust the ratio to a smaller value in the range to enhance the baking effect; when the material is easier to dry, the user can adjust the ratio to a larger value in a range so as to avoid excessive baking and damage to the material. Thus, the user can adjust according to actual needs.

In order to reach the temperature required by the user, the number of infrared heating tubes is required to reach the range required by the user. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Optionally, the arrangement density of the first infrared electrothermal tube in the length direction of the oven is between 4 counts/m and 8 counts/m.

In this embodiment, the number of the infrared electrothermal tubes can meet the temperature required by the user when baking the material in the range, and meanwhile, the infrared electrothermal tubes can be uniformly arranged in the oven, so that the temperatures of all areas in the oven can be kept the same or similar.

It should be noted that the air pressure of the air blown out by the air outlet member is required to be kept uniform so as to avoid the difference in the air pressure of the blown air. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Referring to fig. 7 and 8, as shown in fig. 7 and 8, the first air outlet member 212a includes a bottom plate 212a-1 and an air outlet plate 212a-2 disposed opposite to the bottom plate 212a-1, the bottom plate 212a-1 being disposed obliquely; the height of the inner space where the first air outlet 212a is connected with the ventilation pipe is greater than the height of the inner space where the first air outlet 212a is far from the ventilation pipe.

In this embodiment, the bottom plate 212a-1 is obliquely arranged, so that the air pressure of the air blown out from the air duct of the air outlet member is the same or similar to the air pressure of the air blown out from the connection position of the air outlet member and the air duct, and the air pressure of the air blown out from the air outlet member can be kept uniform.

It should be noted that, the first air outlet 212a and the second air outlet 212b can both blow out air to air-dry the material. Specific implementation satisfying the above needs the present embodiment is not limited, and for ease of understanding, the present application provides a preferred implementation.

Referring to fig. 4 and 9, as shown in fig. 4 and 9, the air drying structure 210 includes a centrifugal fan 213, and a volute 213a of the centrifugal fan 213 is provided with two diversion openings 213b that are arranged in a central symmetry manner; the volute 213a forms an intake portion 211; the two diversion openings 213b are respectively communicated with the first air outlet 212a and the second air outlet 212b.

In this embodiment, the volute 213a forms the air inlet 211, and the two diversion openings 213b are respectively communicated with the first air outlet 212a and the second air outlet 212b, so that the air entering from the volute 213a can be diverted and respectively enter the two diversion openings 213b, and the two diversion openings 213b are communicated with the first air outlet 212a and the second air outlet 212b through the ventilation pipe, so that the first air outlet 212a and the second air outlet 212b can blow out the air.

In summary, the oven provided in the embodiments of the present application includes an oven housing 100, a baking mechanism 200, and the baking mechanism 200 is disposed in the oven housing 100; the oven shell 100 is provided with a feed inlet 110 and a discharge outlet 120, wherein the feed inlet 110 is used for placing materials to be baked, and the discharge outlet 120 is used for discharging baked materials; the baking mechanism 200 comprises an air-drying structure 210 and a heating assembly 220, wherein the air-drying structure 210 comprises an air inlet part 211, an air outlet part 212 and a ventilation pipe, and the air inlet part 211 and the air outlet part 212 are communicated with the ventilation pipe; the air outlet 212 includes a first air outlet 212a, and the first air outlet 212a has a plurality of air outlet nozzles 230; the heating assembly 220 includes a plurality of first heating elements 221, where the first heating elements 221 are disposed beside the first air outlet 212a, so as to avoid the air outlet nozzle 230; the plurality of first heating elements 221 are spaced apart to cooperate with the air drying structure 210 to toast the material in the oven. Therefore, the problem that the oven cannot meet the requirement that the temperature in the oven is kept uniform when the material is baked is solved.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. An oven, characterized in that the oven comprises an oven shell and a baking mechanism, wherein the baking mechanism is arranged in the oven shell;

the oven shell is provided with a feeding hole and a discharging hole, the feeding hole is used for placing materials to be baked, and the discharging hole is used for discharging baked materials;

the baking mechanism comprises an air drying structure and a heating assembly, wherein the air drying structure comprises an air inlet part, an air outlet part and a ventilation pipe, and the air inlet part and the air outlet part are communicated with the ventilation pipe;

the air outlet part comprises a first air outlet piece, and the first air outlet piece is provided with a plurality of air outlet nozzles; the heating assembly comprises a plurality of first heating elements, and the first heating elements are arranged beside the first air outlet elements to avoid the air outlet nozzles; the first heating pieces are arranged at intervals, so that the first heating pieces are matched with the air drying structure to bake materials in the oven.

2. The oven of claim 1 wherein the air outlet comprises a second air outlet and the heating assembly comprises a second heating element; the first air outlet piece and the second air outlet piece are arranged above and below, and the second air outlet piece and the second heating piece are arranged at intervals.

3. The oven of claim 2 wherein the number of second heating elements is a plurality and the first heating elements are staggered with respect to the second heating elements.

4. The oven of claim 2 wherein said heating assembly includes a third heating element disposed at said air inlet.

5. The oven of claim 2, wherein the air output of the first air outlet and the air output of the second air outlet are each greater than or equal to 70cm per square meter and less than or equal to 150cm per square meter.

6. The oven of claim 2, wherein the second air outlet member is provided with a plurality of air outlet nozzles, the air outlet nozzles are arranged in a conical shape, and the outer openings of the air outlet nozzles are positioned at the tip of the conical shape.

7. The oven of claim 6 wherein the outlet has opposed first and second mouths, the first mouth having a diameter in the range of greater than or equal to 2 mm and less than or equal to 4 mm and the second mouth having a diameter in the range of greater than or equal to 8 mm and less than or equal to 13 mm.

8. The oven of claim 2 wherein at least one of said first air outlet and said second air outlet is provided with a filter means.

9. The oven of claim 2 wherein said first heating element and said second heating element are provided as a first infrared electrothermal tube and a second infrared electrothermal tube, respectively; the power range of the first infrared electrothermal tube and the second infrared electrothermal tube is more than or equal to 300w and less than or equal to 800w.

10. The oven of claim 9 wherein the irradiation ranges of said first and second infrared electrothermal tubes at least partially coincide.

11. The oven of claim 10 wherein a plurality of said first infrared heating tubes are provided and the irradiation ranges of adjacent ones of said first infrared heating tubes at least partially coincide.

12. The oven of claim 11 wherein a plurality of said first air outlet members are provided, a plurality of said first air outlet members and a plurality of said first heating members being alternately provided;

the ratio of the distance between two adjacent first infrared electrothermal tubes to the width of the first air outlet piece between two adjacent first infrared electrothermal tubes is more than or equal to 1.2 and less than or equal to 1.5.

13. The oven of claim 11 wherein said first infrared heating tube is disposed at a density of between 4 and 8 counts/meter along the length of said oven.

14. The oven of any one of claims 2-13 wherein said first air outlet member comprises a floor and an air outlet plate disposed opposite said floor, said floor being disposed at an incline; the height of the inner space at the joint of the first air outlet piece and the ventilation pipe is larger than that of the inner space at the position, far away from the ventilation pipe, of the first air outlet piece.

15. The oven of claim 2, wherein the air drying structure comprises a centrifugal fan, and a volute of the centrifugal fan is provided with two diversion ports which are arranged in a central symmetry manner; the two diversion openings are respectively communicated with the first air outlet piece and the second air outlet piece.