CN216620587U - Oven of simple and high-efficient heating of clearance - Google Patents

Abstract

The utility model provides an oven with simple cleaning and high-efficiency heating, wherein a baking structure is arranged in a heating area at the upper part of an oven body, and a reciprocating type conveying belt structure for conveying articles to be baked is arranged below the baking structure, so that the condition that residues falling off the articles to be baked and conveyed on the reciprocating type conveying belt structure fall into the baking structure to cause slag burning is avoided; meanwhile, hot air generated by the baking structure is respectively conveyed to each layer of reciprocating conveyer belt structure through a hot air conveying structure, so that each layer of reciprocating conveyer belt structure can be baked by the hot air; the blowing auxiliary pipe provided with a plurality of air exhaust holes along the conveying direction of the reciprocating type conveying belt structure is arranged, so that hot air in each layer of reciprocating type conveying belt structure is distributed more uniformly; through setting up the hot-blast circulation of heat absorption tuber pipe in with the box and heat once more in heat exchanger, avoid the heat waste in the box, effectively reduce the heating energy consumption that toasts, reduce treatment cost.

Description

Oven of simple and high-efficient heating of clearance

Technical Field

The utility model relates to baking equipment, in particular to an oven which is easy to clean and efficient in heating.

Background

Currently in the snack food processing industry, there are a number of snack foods processed by baking, for example: the baking requirements are wide, and baking time and temperature are different according to the requirements of final products, so that baking equipment on the market is diversified in design, and has a multilayer mesh belt continuous type, a single-layer mesh belt continuous type, a single-box batch type, a roller driving continuous type and the like. In the snack food processing industry, the multi-layer continuous oven widely used at present has the following problems:

1. design of the heating zone at the bottom of the oven: in the oven with the structure, the food conveying belt on the upper layer is easy to drop residues to the heating area on the bottom when conveying food, and the risk of burning broken slag is generated.

2. The oven has the advantages that the hot air circulating pipes in the oven are fewer or are not positioned properly, so that the heat temperature uniformity of the oven is lower.

Therefore, the prior art has yet to be improved.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to provide an oven that is simple to clean and efficient to heat, and which aims to solve one or more of the problems of the prior art.

The technical scheme of the utility model is as follows:

the technical scheme provides an oven which is simple to clean and efficient in heating, and the oven comprises an oven body, a conveying structure and a baking structure, wherein the conveying structure is used for conveying articles to be baked in the oven body, the baking structure is used for heating and baking the articles to be baked, the oven body is sequentially divided into a heating area, a conveying area and a slag crushing area from top to bottom, and the baking structure is arranged in the heating area of the oven body; the conveying structure is arranged in the conveying area of the box body and is arranged below the baking structure, the box body comprises a feeding hole and a discharging hole, articles to be baked enter the box body from the feeding hole, and are finally discharged out of the box body from the discharging hole after being conveyed by the conveying structure; the conveying structure comprises at least two layers of reciprocating conveying belt structures which are in conveying connection, articles to be baked are sequentially conveyed on the layer-by-layer reciprocating conveying belt structures from top to bottom, the baking structure is used for respectively conveying hot air into each layer of reciprocating conveying belt structure, and the articles to be baked conveyed on the reciprocating conveying belt structures are heated and baked; residues falling from the objects to be baked conveyed on the reciprocating type conveying belt structure can fall to a slag crushing area at the bottom of the box body and be discharged.

Furthermore, a scrap supporting plate used for collecting residues falling to the bottom of the box body is arranged in the slag crushing area at the bottom of the box body, a supporting plate opening is formed in the side face of the bottom of the box body, and the scrap supporting plate stretches into the slag crushing area at the bottom of the box body through the supporting plate opening so as to collect the residues falling from the objects to be baked and conveyed on the reciprocating type conveying belt structure.

Further, the reciprocating type conveying belt structure comprises a driving roller, a driven roller and a conveying net belt, the conveying net belt is wound on the driving roller and the driven roller to form an annular conveying belt structure, and the driving roller is connected with the net belt driving structure and driven to rotate by the net belt driving structure.

Further, the baking structure comprises a heating structure and a hot air conveying structure, the heating structure heats air into hot air, the hot air conveying structure conveys the hot air into each layer of reciprocating conveyer belt structure respectively, and the objects to be baked conveyed on the reciprocating conveyer belt structure are heated and baked.

Furthermore, the heating structure comprises a heat exchanger, a heat absorption air pipe and a fan, one end of the heat absorption air pipe is connected with an air inlet of the fan, the other end of the heat absorption air pipe is connected to the inside of the box body, an air outlet of the fan is connected with the heat exchanger, and a heating wire is arranged in the heat exchanger; through the action of the fan, air in the box body enters the heat exchanger from the heat absorption air pipe and the fan, and exchanges heat with the heating wires to become hot air.

Further, the hot air conveying structure comprises at least one group of hot air main pipe structures used for conveying the hot air to each layer of reciprocating conveyer belt structure, air inlets of the hot air main pipe structures are connected with the heat exchanger, the hot air main pipe structures are arranged on the side face of the conveying area, each group of hot air main pipe structures comprise a plurality of air outlets, the number of the air outlets is consistent with that of the compound conveyer belt structures and corresponds to one another, and each air outlet conveys the hot air to the corresponding layer of reciprocating conveyer belt structure.

Further, the hot air main pipe structure comprises a first hot air pipe for conveying hot air to the reciprocating conveyer belt structure positioned at the upper part of the conveying area and a second hot air pipe for conveying hot air to the reciprocating conveyer belt structure positioned at the lower part of the conveying area, the first hot air pipe is arranged along the vertical direction, first air outlets are arranged on the first hot air pipe, and the number and the positions of the first air outlets are consistent with those of the conveying hot air to the reciprocating conveyer belt structure positioned at the upper part of the conveying area; the second hot air duct is arranged along the vertical direction, a second air outlet is arranged on the second hot air duct, and the number and the position of the second air outlet are consistent with those of the reciprocating type conveying belt structure conveying hot air at the lower part of the conveying area.

Further, heating structure still includes the exhaust pipe, the exhaust pipe with the heat absorption tuber pipe is connected, the inside most air of box is followed the heat absorption tuber pipe the fan enters into in the heat exchanger, with the heater strip realizes the heat exchange, becomes hot-blast, the inside small part air of box passes through the exhaust pipe is discharged.

Furthermore, the hot air conveying structure further comprises a plurality of blowing auxiliary pipes, each blowing auxiliary pipe is arranged on the side face of one layer of the reciprocating conveying belt structure, the blowing auxiliary pipes extend along the length of the conveying direction of the reciprocating conveying belt structure, and each blowing auxiliary pipe is connected with one first air outlet or one second air outlet; a plurality of air exhaust holes are sequentially formed in the air blowing auxiliary pipe along the length direction, and the hot air is respectively conveyed to the corresponding layer in the reciprocating conveying belt structure through the air exhaust holes.

Furthermore, the heating structure further comprises an air inlet pipe, the air inlet pipe is connected with the heat exchanger, and air outside the box body enters the heat exchanger through the air inlet pipe.

According to the technical scheme, the baking structure is arranged in the heating area at the upper part of the box body, and the reciprocating type conveying belt structure for conveying the articles to be baked is arranged below the baking structure, so that the situation that residues falling from the articles to be baked and conveyed on the reciprocating type conveying belt structure fall into the baking structure to cause slag combustion is avoided; meanwhile, hot air generated by the baking structure is respectively conveyed to the structure of each layer of reciprocating conveyer belt through the hot air conveying structure, so that each layer of reciprocating conveyer belt structure can be baked by the hot air; the hot air distribution in each layer of reciprocating conveyer belt structure is more uniform by arranging the blowing auxiliary pipe which is provided with a plurality of air exhaust holes along the conveying direction of the reciprocating conveyer belt structure; through setting up the hot-blast circulation of heat absorption tuber pipe in with the box and heat once more in heat exchanger, avoid the heat waste in the box, can effectively reduce the heating energy consumption of toasting, reduce treatment cost.

Drawings

Fig. 1 is a schematic view showing the external structure of an oven for easy cleaning and efficient heating according to the present invention.

Fig. 2 is a schematic view of the oven of the present invention with the door removed for easy cleaning and efficient heating.

Fig. 3 and 4 are schematic views showing the internal structure of the oven of the present invention, which is easy to clean and efficient in heating.

Reference numerals:

a heat exchanger 2; a fan 3; an air inlet pipe 4; an exhaust duct 5; a box body 6; a feed inlet 7; a box door 8; a discharge port 9; a waste pallet 10; pulling the handle 10-1; a heat absorption air duct 11; a first hot air main pipe 12; a second hot air main pipe 13; a heating wire 15; a blowing sub-pipe 16; a conveyor belt 17.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

As shown in fig. 1 to 4, an oven with simple cleaning and high-efficiency heating includes an oven body 6, a conveying structure for conveying an article to be baked in the oven body 6, and a baking structure for heating and baking the article to be baked, wherein the oven body 6 is sequentially divided into a heating area, a conveying area and a slag crushing area from top to bottom, and the baking structure is arranged in the heating area of the oven body 6; the conveying structure is arranged in a conveying area of the box body 6 and is arranged below the baking structure, the box body 6 comprises a feeding hole 7 and a discharging hole 9, articles to be baked enter the box body 6 from the feeding hole 7, and are finally discharged out of the box body 6 from the discharging hole 9 after being conveyed by the conveying structure; the conveying structure comprises at least two layers of reciprocating conveying belt structures which are in conveying connection, articles to be baked are sequentially conveyed on the layer-by-layer reciprocating conveying belt structures from top to bottom, the baking structure is used for respectively conveying hot air into each layer of reciprocating conveying belt structure, and the articles to be baked conveyed on the reciprocating conveying belt structures are heated and baked; the residues from the objects to be baked, which are conveyed on the reciprocating conveyor belt structure, fall to the slag crushing area at the bottom of the box 6 and are discharged.

In some embodiments, in order to collect the residues dropped from the objects to be baked, a waste pallet 10 for collecting the residues dropped to the bottom of the box 6 is disposed in the residue crushing area at the bottom of the box 6, and a pallet opening is disposed at the bottom side of the box 6, through which the waste pallet 10 extends into the residue crushing area at the bottom of the box 6 to collect the residues dropped from the objects to be baked, which are conveyed on the reciprocating conveyor structure.

In some embodiments, to facilitate pulling out the waste pallet 10, a pulling handle 10-1 is provided on a side of the waste pallet 10 outside the housing 6 to facilitate pulling the waste pallet 10.

In some embodiments, a box door 8 is disposed on a side surface of the box body 6, the box door 8 is closed, so that the whole box body 6 forms a closed baking space, and the condition of the box door 8 can be checked by opening the box door 8, thereby facilitating maintenance and equipment maintenance.

In some embodiments, the number of the reciprocating conveyer belt structures is set according to actual needs, and can be two layers, three layers, five layers, and the like. In this embodiment, the reciprocating conveyer belt structure is provided with 5 layers, which includes a first reciprocating conveyer belt structure, a second reciprocating conveyer belt structure, a third reciprocating conveyer belt structure, a fourth reciprocating conveyer belt structure and a fifth reciprocating conveyer belt structure, the conveying directions between two adjacent layers of the reciprocating conveyer belt structures are opposite, the articles to be baked are conveyed on the first reciprocating conveyer belt structure, the second reciprocating conveyer belt structure, the third reciprocating conveyer belt structure, the fourth reciprocating conveyer belt structure and the fifth reciprocating conveyer belt structure in sequence (the articles to be baked are conveyed from the first reciprocating conveyer belt structure to fall to the second reciprocating conveyer belt structure, then conveyed from the second reciprocating conveyer belt structure to fall to the third reciprocating conveyer belt structure, and then conveyed from the third reciprocating conveyer belt structure to fall to the fourth reciprocating conveyer belt structure, and then from the fourth reciprocating conveyor structure to the fifth reciprocating conveyor structure) and finally out of the box 6.

In some embodiments, the reciprocating conveyer belt structure comprises a driving roller, a driven roller and a conveyer belt 17, the conveyer belt 17 is wound around the driving roller and the driven roller to form an annular conveyer belt structure, and the driving roller is connected with the belt driving structure (such as a motor) and driven by the belt driving structure to rotate.

In some embodiments, the baking structure comprises a heating structure and a hot air delivery structure, the heating structure heats air into hot air, the hot air delivery structure delivers the hot air into each layer of the reciprocating conveyer belt structure respectively, and the heating structure heats and bakes the articles to be baked conveyed on the reciprocating conveyer belt structure.

In some specific embodiments, the heating structure includes a heat exchanger 2, a heat absorption air duct 11, and a fan 3, one end of the heat absorption air duct 11 is connected to an air inlet of the fan 3, the other end of the heat absorption air duct 11 is connected to the inside of the box 6, an air outlet of the fan 3 is connected to the heat exchanger 2, and a heating wire 15 is disposed in the heat exchanger 2; through the action of the fan 3, the air in the box body 6 enters the heat exchanger 2 from the heat absorption air pipe 11 and the fan 3, and exchanges heat with the heating wires 15 to become hot air.

In some embodiments, the hot air delivery structure includes at least one hot air main pipe structure for delivering the hot air to each layer of the reciprocating conveyer belt structure, an air inlet of the hot air main pipe structure is connected to the heat exchanger 2, the hot air main pipe structure is disposed at a side of the delivery area, each hot air main pipe structure includes a plurality of air outlets, the number of the air outlets is consistent with the number of the double conveyer belt structures and corresponds to one another, and each air outlet delivers the hot air to a corresponding layer of the reciprocating conveyer belt structure.

In some specific embodiments, the hot air main pipe structure comprises a first hot air pipe 12 for supplying hot air to the reciprocating conveyer belt structure located at the upper part of the conveying area and a second hot air pipe 13 for supplying hot air to the reciprocating conveyer belt structure located at the lower part of the conveying area, the first hot air pipe 12 is arranged in a vertical direction, and first air outlets are arranged on the first hot air pipe 12, and the number and the positions of the first air outlets are consistent with those of the reciprocating conveyer belt structure located at the upper part of the conveying area; the second hot air duct 13 is arranged along the vertical direction, a second air outlet is arranged on the second hot air duct 13, and the number and the position of the second air outlet are consistent with those of the hot air conveyed by the reciprocating conveyer belt structure positioned at the lower part of the conveying area; due to the difference of the conveying distance of the hot air, the temperature of the hot air conveyed to each layer of the compound conveying belt structure is gradually reduced from top to bottom along the conveying area.

In some embodiments, the hot air main pipe structures may be arranged in several groups as required, and the several groups of hot air main pipe structures may be sequentially arranged on the same side of the reciprocating conveyer belt structure or respectively arranged on two sides of the reciprocating conveyer belt structure along the conveying direction of the reciprocating conveyer belt structure. The hot air is preferably arranged on two sides of the reciprocating type conveying belt structure, so that the hot air can be respectively conveyed to the corresponding reciprocating type conveying belt structure from two directions, and the heating and baking temperature is more uniform.

In this embodiment, the compound conveyor belt structure is provided with five layers, the first air outlets are provided with 3, and the 3 first air outlets respectively convey the hot air to the first reciprocating conveyor belt structure, the second reciprocating conveyor belt structure and the third reciprocating conveyor belt structure; the second air outlet sets up 2, 2 the second air outlet will hot-blast the transport to the fourth reciprocating type conveyer belt structure respectively and in the fifth reciprocating type conveyer belt structure.

In some specific embodiments, the heating structure further includes an exhaust pipe 5, the exhaust pipe 5 is connected to the heat absorption air pipe 11, most of the air inside the box 6 enters the heat exchanger 2 from the heat absorption air pipe 11 and the fan 3, and exchanges heat with the heating wires 15 to become hot air, and a small part of the air inside the box 6 is discharged through the exhaust pipe 5 (when the air pressure inside the box 6 is too large, a part of the air needs to be discharged).

In some embodiments, in order to make the heating temperature of the reciprocating conveyer belt structure along the conveying direction more uniform, the hot air conveying structure further comprises a plurality of blowing sub-pipes 16, each blowing sub-pipe 16 is arranged on a side surface of one layer of the reciprocating conveyer belt structure, each blowing sub-pipe 16 extends along the conveying direction length of the reciprocating conveyer belt structure, and each blowing sub-pipe 16 is connected with one first air outlet or one second air outlet; a plurality of air exhaust holes are sequentially formed in the air blowing auxiliary pipe 16 along the length direction, and the hot air is respectively conveyed to the corresponding layers of the reciprocating type conveying belt structures through the air exhaust holes.

The number of the blowing auxiliary pipes 16 is equal to the sum of the number of the first air outlets and the number of the second air outlets, when the hot air main pipe structure is arranged on the same side of the reciprocating conveyer belt structure, the blowing auxiliary pipes 16 are also arranged on the same side of the reciprocating conveyer belt structure, and when the hot air main pipe structures are respectively arranged on two sides of the reciprocating conveyer belt structure, the blowing auxiliary pipes 16 are also matched with the hot air main pipe structure.

In some embodiments, the heating structure further comprises an air inlet pipe 4, the air inlet pipe 4 is connected with the heat exchanger 2, and air outside the box body 6 enters the heat exchanger 2 through the air inlet pipe 4; when air needs to be supplemented from the outside of the box 6, the air outside the box 6 enters the heat exchanger 2 through the air inlet pipe 4.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be understood that the utility model is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the utility model as defined by the appended claims.

Claims (10)

1. The oven is simple to clean and high-efficiency in heating, and is characterized by comprising an oven body, a conveying structure and a baking structure, wherein the conveying structure is used for conveying articles to be baked in the oven body, the baking structure is used for heating and baking the articles to be baked, the oven body is sequentially divided into a heating area, a conveying area and a slag crushing area from top to bottom, and the baking structure is arranged in the heating area of the oven body; the conveying structure is arranged in the conveying area of the box body and is arranged below the baking structure, the box body comprises a feeding hole and a discharging hole, articles to be baked enter the box body from the feeding hole, and are finally discharged out of the box body from the discharging hole after being conveyed by the conveying structure; the conveying structure comprises at least two layers of reciprocating conveying belt structures which are in conveying connection, articles to be baked are sequentially conveyed on the layer-by-layer reciprocating conveying belt structures from top to bottom, the baking structure is used for respectively conveying hot air into each layer of reciprocating conveying belt structure, and the articles to be baked conveyed on the reciprocating conveying belt structures are heated and baked; residues falling from the objects to be baked conveyed on the reciprocating type conveying belt structure can fall to a slag crushing area at the bottom of the box body and be discharged.

2. The oven of claim 1 wherein a scrap tray for collecting the residue dropped to the bottom of the housing is provided in the debris zone at the bottom of the housing and a tray port is provided in the bottom side of the housing through which the scrap tray extends into the debris zone at the bottom of the housing to collect the residue dropped from the items to be toasted being conveyed on the reciprocating conveyor structure.

3. The oven of claim 1 wherein said reciprocating conveyor structure comprises a drive roller, a driven roller and a belt conveyor, said belt conveyor being wound around said drive roller and said driven roller to form an endless conveyor structure, said drive roller being connected to said belt drive structure and being driven in rotation by said belt drive structure.

4. The oven of claim 1 wherein said toasting structure includes a heating structure for heating air into hot air and a hot air delivery structure for delivering said hot air separately to each layer of said shuttle structure for toasting an item to be toasted being conveyed on said shuttle structure.

5. The oven with the advantages of simple cleaning and high heating efficiency as claimed in claim 4, characterized in that the heating structure comprises a heat exchanger, a heat absorption air pipe and a fan, wherein one end of the heat absorption air pipe is connected with an air inlet of the fan, the other end of the heat absorption air pipe is connected to the inside of the oven body, an air outlet of the fan is connected with the heat exchanger, and a heating wire is arranged in the heat exchanger; through the action of the fan, air in the box body enters the heat exchanger from the heat absorption air pipe and the fan, and exchanges heat with the heating wires to become hot air.

6. The oven of claim 5, wherein the hot air delivery structure comprises at least one hot air main structure for delivering the hot air to each layer of the reciprocating conveyer belt structure, the hot air main structure has an air inlet connected to the heat exchanger, the hot air main structure is disposed at a side of the delivery area, each hot air main structure comprises a plurality of air outlets, the number of the air outlets is equal to the number of the reciprocating conveyer belt structures, and the air outlets are in one-to-one correspondence, and each air outlet delivers the hot air to a corresponding layer of the reciprocating conveyer belt structure.

7. The oven of claim 6, wherein the hot air main structure comprises a first hot air duct for supplying hot air to the reciprocating conveyer belt structure located at the upper part of the conveying zone and a second hot air duct for supplying hot air to the reciprocating conveyer belt structure located at the lower part of the conveying zone, the first hot air duct is arranged in a vertical direction, a first air outlet is arranged on the first hot air duct, and the number and position of the first air outlet are consistent with those of the reciprocating conveyer belt structure located at the upper part of the conveying zone; the second hot air duct is arranged along the vertical direction, a second air outlet is arranged on the second hot air duct, and the number and the position of the second air outlet are consistent with those of the reciprocating type conveying belt structure conveying hot air at the lower part of the conveying area.

8. The oven of claim 7, wherein the heating structure further comprises an exhaust pipe, the exhaust pipe is connected with the heat absorption air pipe, most of air inside the oven body enters the heat exchanger from the heat absorption air pipe and the fan, heat exchange is achieved between the air and the heating wires, the air is changed into hot air, and a small part of air inside the oven body is exhausted through the exhaust pipe.

9. The oven of any one of claims 7 or 8, wherein the hot air delivery structure further comprises a plurality of blowing sub-pipes, each blowing sub-pipe is disposed at a side of one layer of the reciprocating conveyer belt structure, the blowing sub-pipes extend along the length of the conveying direction of the reciprocating conveyer belt structure, and each blowing sub-pipe is connected with one of the first air outlet or one of the second air outlet; a plurality of air exhaust holes are sequentially formed in the air blowing auxiliary pipe along the length direction, and the hot air is respectively conveyed to the corresponding layer in the reciprocating conveying belt structure through the air exhaust holes.

10. The oven of any one of claims 7 or 8, wherein said heating structure further comprises an air inlet duct, said air inlet duct being connected to said heat exchanger, air outside said oven entering said heat exchanger through said air inlet duct.

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