Air conveying type industrial oven

Abstract

The utility model discloses an air conveying type industrial oven which comprises an oven body and a hot air control generation box located at the top of the oven body, and flow guide grooves are fixedly formed in the corner positions between the two sides of the inner wall of the oven body and the top of the inner wall. The side face and the bottom of the diversion trench are open, the corner position between the side face of the inner wall of the baking oven and the top of the inner wall of the baking oven is an outwards-protruding arc-shaped curved surface, diversion trenches are vertically and fixedly installed at the positions, located on the two sides of the baking oven, in the baking oven, and diversion plates are arranged in the diversion trenches at equal intervals in the longitudinal direction. The flow guide grooves are formed in the corners of the two sides of the top of the baking box, hot air is guided downwards through the arc-shaped structures, the flowing resistance of the hot air is reduced, the hot air is guided through the flow guide plates, and each layer of baking cavity is guided through the multiple internally-independent flow dividing grooves; the air pressure of hot air introduced in each layer of baking is close, the air flow speed is close, and the influence of different distances from a centrifugal wind wheel is weakened.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial ovens, in particular to an air-conveying industrial oven. Background Art

[0002] Industrial ovens are baking equipment used in industrial production processes. They are categorized as blast ovens and conveyor ovens based on the hot air circulation method. Blast ovens use a blower to pump hot air directly into the oven from an outlet on one side, where it is then exhausted through an air return duct. Conveyor ovens, on the other hand, draw air in from an outlet above the oven, which is then blown to the sides by a centrifugal impeller. Air is then blown from both sides of the oven into the center of the oven, where it is finally exhausted through an air return duct below. Because the air circulation method of conveyor ovens is more uniform than that of blast ovens, small industrial ovens generally use a blast structure, which is smaller, more uniform, and less expensive. Medium and large industrial ovens generally use a conveyor structure, which is larger and more expensive, but provides more uniform air flow and better drying results.

[0003] At present, many air-transporting ovens on the market blow hot air from the upper air outlet to the surrounding areas through the centrifugal fan wheel, and then blow air directly into the baking oven through the air inlet holes on both sides of the baking oven. Since there are multiple layers of baking chambers in the baking oven, the products baked in each baking chamber are at different distances from the top centrifugal fan wheel. The farther the distance, the lower the air pressure. Therefore, in order to balance the hot air pressure of each baking chamber in the baking oven and further improve the uniformity of hot air circulation in each baking chamber, a new type of air-transporting industrial oven with a new structure has been designed and improved. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides an air-moving industrial oven for balancing the hot air pressure of each baking cavity in the baking oven and further improving the uniformity of hot air circulation in each baking cavity.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An air-moving industrial oven comprises a baking box and a hot air control generating box located on top of the baking box. A baking oven is provided inside the baking box. A centrifugal impeller is provided above the baking oven in the baking box, corresponding to the air outlet of the hot air control generating box and connected to an internal drive motor. An air return channel connected to the hot air control generating box is provided below the back surface of the inner wall of the baking oven.

[0007] Guide grooves are fixedly installed at the corners between the inner walls of the baking oven and the top of the inner wall. The guide grooves are open at the sides and bottom and have an outwardly convex arc surface corresponding to the corners between the inner walls of the baking oven and the top of the inner wall. Vertical guide plates are equidistantly arranged in the longitudinal direction in the guide grooves.

[0008] The baking oven is provided with vertically fixed diversion grooves on both sides of the baking oven, with the top and the diversion grooves being open on one side of the baking oven. Air inlet holes are evenly arranged at positions on both sides of the baking oven corresponding to the diversion grooves, and diversion plates are equidistantly arranged in the longitudinal direction inside the diversion grooves.

[0009] The interior of the baking oven is divided into multiple baking chambers by several horizontal partition nets. The diverter trough is composed of multiple trough bodies with the same shape, different sizes and the same number as the baking chambers. The diverter trough corresponding to the upper baking chamber is embedded above the diverter trough corresponding to the adjacent baking chamber in the lower layer near the side of the baking box.

[0010] Preferably, the height of the baking cavity is the same as the height of the corresponding side opening of the diverter groove.

[0011] Preferably, the air return channel is located below the lowest layer of horizontal partition net.

[0012] Preferably, the number of diverter plates in each diverter trough is the same, and the number of guide plates in a single guide trough does not exceed the number of inner diverter plates of the single diverter trough.

[0013] Preferably, there is no gap between the diverter plate in the diverter trough and the baking oven.

[0014] Preferably, the plurality of diverter slots and diverter plates are welded and fixed into an integrated structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The utility model provides guide grooves at the corners on both sides of the top of the baking oven, which guide the hot air downward through the arc structure, thereby reducing the flow resistance of the hot air. The hot air is guided by the guide plate and guided to each baking cavity layer through multiple internal independent diversion grooves, so that the air pressure and air flow rate of the hot air introduced into each baking layer are similar, reducing the influence of the different distances from the centrifugal impeller, achieving the purpose of balancing the hot air pressure of each baking cavity layer in the baking oven and further improving the uniformity of the hot air circulation in each baking cavity layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the front view of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the baking oven of the utility model;

[0019] Figure 3 This is a front cross-sectional view of the baking oven and diversion trough of the utility model;

[0020] Figure 4 This is a side view of the diverter trough of the utility model corresponding to the baking oven;

[0021] Figure 5 This is a top view of the diversion trough of the utility model;

[0022] Figure 6 This is a front cross-sectional view of the guide trough of the utility model;

[0023] Figure 7 This is a side view of the guide trough of the utility model corresponding to the side of the baking oven.

[0024] In the figure: 1. Baking oven; 2. Hot air control generating box; 3. Baking oven; 301. Air inlet hole; 302. Horizontal partition net; 303. Baking chamber; 4. Centrifugal fan wheel; 5. Air return channel; 6. Guide groove; 601. Guide plate; 7. Diverter groove; 701. Diverter plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1-7 As shown, the utility model provides a technical solution: an air-moving industrial oven, comprising a baking box 1 and a hot air control generating box 2 located on the top of the baking box 1, a baking oven 3 is provided inside the baking box 1, a centrifugal fan 4 corresponding to the air outlet position of the hot air control generating box 2 and connected to the internal drive motor is provided above the baking oven 3 in the baking box 1, an air return channel 5 connected to the hot air control generating box 2 is provided below the back of the inner wall of the baking oven 3, the air return channel 5 is located below the lowest horizontal partition net 302, the hot air has a low density and is easily gathered above, and the air outlet at the bottom is conducive to the uniform circulation of the hot air;

[0027] Guide grooves 6 are fixedly installed at the corners between the inner walls of the baking oven 1 and the top of the inner wall. The guide grooves 6 are grooves with open sides and bottoms, and have an outwardly convex curved surface corresponding to the corners between the inner walls of the baking oven 1 and the top of the inner wall. The curved surface structure guides the hot air, so that the hot air flow is less resisted. Vertical guide plates 601 are equidistantly arranged in the longitudinal direction within the guide grooves 6, which facilitates uniform distribution of the hot air in the longitudinal direction, so that the hot air is evenly guided downward.

[0028] Inside the baking oven 1, diverter slots 7 open on the top and on one side of the corresponding baking oven 3 are vertically fixedly installed at positions on both sides of the baking oven 3. They are used to divide the hot air transported from above into multiple relatively uniform streams along the vertical and longitudinal directions, and respectively transport them to different baking chambers 303 and different longitudinal positions of the same baking chamber 303, so that the hot air can be evenly transported to the baking chamber 303 to deliver the baked products. Air inlet holes 301 are evenly provided at positions on both sides of the baking oven 3 corresponding to the diverter slots 7. Diverter plates 701 are equidistantly provided in the diverter slots 7 along the longitudinal direction. Multiple diverter slots 7 and diverter plates 701 are welded and fixed to form an integrated structure, which is convenient for production, processing and installation, has higher structural strength and extends service life.

[0029] The interior of the baking oven 3 is divided into multiple baking chambers 303 by a plurality of horizontal partitioning nets 302. The diverter slots 7 are composed of multiple slots of the same shape but different sizes, and the same number as the baking chambers 303. The diverter slots 7 corresponding to the upper baking chamber 303 are embedded above the diverter slots 7 corresponding to the adjacent baking chamber 303 in the lower layer, on the side close to the baking box 1. The height of the baking chamber 303 is the same as the height of the side opening of the corresponding diverter slot 7, so that each diverter slot 7 transports hot air from one baking chamber 303.

[0030] The number of diverter plates 701 in each diverter trough 7 is the same, and the number of guide plates 601 in a single guide trough 6 does not exceed the number of diverter plates 701 in a single diverter trough 7. The more the number, the more uniform the diversion. There is no gap between the diverter plates 701 in the diverter trough 7 and the baking oven 3, ensuring that the diversion does not aggregate.

[0031] Working principle:

[0032] The hot air control generating box 2 heats the air through a heating resistor, and the hot air is blown into the baking box 1 from the air outlet through a blower. The hot air is dispersed to the surroundings by the rotating centrifugal wind wheel 4 and transported downward on both sides of the baking oven 3. The hot air can reduce the resistance encountered when the air is transported and turned under the action of the guide grooves 6 on both sides. Multiple diversion grooves 7 are equidistant horizontally and multiple diversion plates 701 are equidistant longitudinally to divert the hot air, and transport the hot air to multiple baking chambers 303 at different distances from the centrifugal wind wheel 4 and different longitudinal positions of the same baking chamber 303, so that the hot air is evenly transported into the baking chamber 303 to bake the products. Finally, the hot air returns to the hot air control generating box 2 through the air return channel 5 to be repeatedly heated, filtered and reused.

[0033] By setting guide grooves on both sides of the top corner of the baking oven, the hot air is guided downward through the arc structure to reduce the flow resistance of the hot air. The hot air is guided by the guide plate and guided to each baking cavity through multiple independent internal diversion grooves. The air pressure and air flow rate of the hot air introduced to each baking layer are similar, which reduces the influence of the different distances from the centrifugal impeller.

[0034] It should be noted that, in this document, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air-moving industrial oven, comprising a baking box (1) and a hot air control generating box (2) located on the top of the baking box (1), wherein a baking oven (3) is provided inside the baking box (1), characterized in that: A centrifugal impeller (4) is provided above the baking oven (3) in the baking oven (1), the impeller corresponding to the air outlet of the hot air control generating box (2) and connected to the internal drive motor; an air return channel (5) is provided below the back of the inner wall of the baking oven (3) and connected to the hot air control generating box (2); A guide groove (6) is fixedly installed at the corner position between the inner wall of the baking oven (1) and the top of the inner wall. The guide groove (6) is a groove body with open sides and bottom, and has an outwardly convex arc surface corresponding to the corner position between the inner wall of the baking oven (1) and the top of the inner wall. Vertical guide plates (601) are equidistantly arranged in the longitudinal direction of the guide groove (6). Inside the baking oven (1), at positions on both sides of the baking oven (3), diversion grooves (7) with an open top and corresponding to one side of the baking oven (3) are vertically fixedly installed. Air inlet holes (301) are evenly arranged at positions on both sides of the baking oven (3) corresponding to the diversion grooves (7). Diversion plates (701) are equidistantly arranged in the longitudinal direction inside the diversion grooves (7). The baking oven (3) is divided into a plurality of baking chambers (303) by a plurality of horizontal partitioning nets (302) inside the baking oven (3), and the diverter groove (7) comprises a plurality of groove bodies of the same shape, different sizes, and the same number as the baking chambers (303). The diverter groove (7) corresponding to the baking chamber (303) in the upper layer is embedded above the diverter groove (7) corresponding to the adjacent baking chamber (303) in the lower layer, on the side close to the baking box (1).

2. The air-conveying industrial oven according to claim 1, characterized in that: The height of the baking cavity (303) is the same as the height of the side opening of the corresponding diversion groove (7).

3. The air-conveying industrial oven according to claim 1, characterized in that: The air return channel (5) is located below the bottommost horizontal partition net (302).

4. The air-conveying industrial oven according to claim 1, characterized in that: The number of the diverter plates (701) in each diverter trough (7) is the same, and the number of the diverter plates (601) in a single diverter trough (6) does not exceed the number of the diverter plates (701) in a single diverter trough (7).

5. The air-conveying industrial oven according to claim 1, characterized in that: There is no gap between the diverter plate (701) in the diverter trough (7) and the baking oven (3).

6. The air-conveying industrial oven according to claim 1, characterized in that: The plurality of diversion slots (7) and the diversion plate (701) are welded and fixed to form an integrated structure.

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