Heated air circulation structure for compressed biscuits

Abstract

The utility model relates to the technical field of compressed biscuits, in particular to a compressed biscuit hot air circulation structure which comprises a hot air circulation assembly, the hot air circulation assembly is installed on a tunnel type oven body, the hot air circulation assembly comprises an air blowing assembly and an adjusting assembly, the air blowing assembly comprises circulating fans, an air inlet pipe and an air outlet pipe, and the circulating fans are arranged in parallel. An air inlet and an air outlet of the circulating fan are connected with the air inlet pipe and the air outlet pipe correspondingly. The adjusting assembly comprises an adjusting piece, a supporting shaft, a guide plate and a linkage piece. According to the utility model, in the adjusting piece, the gear is moved to be meshed with the rack, so that the supporting shaft and the guide plates can rotate, and the plurality of guide plates can synchronously rotate through the linkage of the linkage piece, so that the air direction is changed from vertical blowing to biscuits to inclined blowing to the biscuits, and the coverage area of hot air on the biscuits is increased; and due to synchronous displacement of the electric heating tubes, the problem that heat of hot air is dissipated in advance due to the fact that a moving path is lengthened is solved.

Description

Technical Field

[0001] This utility model relates to the field of compressed biscuit technology, specifically to a hot air circulation structure for compressed biscuits. Background Technology

[0002] Compressed biscuits are a type of convenience food made primarily from wheat flour, sugar, oil, lactic acid bacteria, and dairy products. They are produced through a cold powder process involving mixing, rolling, baking, cooling, pulverizing, and external mixing. The lactic acid bacteria metabolize to produce organic acids such as lactic acid and acetic acid, which, along with yeast, enhance the flavor of the compressed biscuits during fermentation. Compressed biscuits are commonly used in outdoor activities, emergency rescue, or military settings. Some compressed biscuits contain spirulina and kelp powder, which can provide some protection against ultraviolet radiation.

[0003] Chinese Patent CN221532667U discloses a hot air circulating tunnel electric oven, including a main oven box. An induced draft fan is installed on the left side of the main oven box, and an exhaust fan and dehumidification chamber are installed on the top. The inner cavity of the main oven box, from top to bottom, consists of an exhaust chamber, a mesh conveyor belt, a conveyor roller supporting the mesh conveyor belt, a heater, and two symmetrically arranged air distribution chambers. Multiple air outlets are equidistantly arranged on the upper surface of each air distribution chamber. The left-side air distribution chamber is connected to the induced draft fan via an air inlet pipe, and the right-side air distribution chamber is connected to the exhaust fan, dehumidification chamber, and exhaust chamber sequentially via a return air pipe. Openings for material conveying by the mesh conveyor belt are machined on both the left and right side walls of the main oven box. Both ends of the mesh conveyor belt extend outside the main oven box and are connected to an external conveying drive device. This invention has the following advantages and effects: it can fully utilize heat energy and achieves good baking quality.

[0004] However, in the above technical solution, airflow is only introduced from bottom to top into the main box of the electric oven through the air outlet. When passing through the heater, it forms hot air to bake the biscuit material and transport the moisture upward. The exhaust fan extracts the internal steam through the exhaust chamber and introduces it into the dehumidification chamber through the return air pipe to absorb the moisture in the steam. The dry hot airflow enters the right-side air distribution chamber through the return air pipe, thus circulating and baking the internal biscuit material. However, the angle of the hot air cannot be adjusted when the device is baking. When baking thicker compressed biscuits, the direct hot air will cause the surface of the compressed biscuits to dry quickly and form a hard crust, affecting the quality of the compressed biscuit baking. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a hot air circulation structure for compressed biscuits.

[0006] The technical solution of this utility model is as follows: A hot air circulation structure for compressed biscuits includes a hot air circulation component, which is installed on the main body of a tunnel oven. The hot air circulation component includes a blowing component and an adjusting component. The blowing component includes a circulating fan, an air inlet pipe, and an air outlet pipe. Multiple circulating fans are arranged in parallel, and the air inlet and outlet of the circulating fans are connected to the air inlet pipe and the air outlet pipe, respectively. The adjusting component includes an adjusting component, a support shaft, a guide plate, and a linkage component. Multiple parallel support shafts are rotatably mounted on the main body of the tunnel oven. Adjusting components and linkage components are provided at both ends of the support shafts, and guide plates are connected to each support shaft. When the hot air circulation component is in use, the circulating fan keeps the hot air circulating through the air inlet pipe and the air outlet pipe. The linkage component drives the multiple support shafts and guide plates to rotate and change the airflow direction.

[0007] Preferably, the tunnel oven body is connected to an installation frame, a first telescopic device, and electric heating tubes. Multiple installation frames are arranged in parallel, multiple first telescopic devices are connected to the tunnel oven body, the telescopic ends of the first telescopic devices are connected to the installation frame, and multiple parallel electric heating tubes are connected to the installation frame.

[0008] Preferably, the hot air circulation assembly further includes a baffle box, which is connected to the mounting frame, and one end of the baffle box is connected to the air outlet duct.

[0009] Preferably, the air outlet duct is connected to multiple diversion pipes, one end of which is connected to the guide box.

[0010] Preferably, an air inlet hood is connected to the air inlet pipe.

[0011] Preferably, the linkage consists of connecting rods and rotating rods. The number of rotating rods corresponds to the number of support shafts. The rotating rods are connected to the support shafts. One end of the rotating rod has a notch. The rotating rods are arranged in a vertical direction. The connecting rods are rotatably connected to the notches of multiple rotating rods. The connecting rods are arranged in a horizontal direction.

[0012] Preferably, the adjusting component consists of a gear and a rack, with both ends of any one support shaft connected to the gear, and a rack corresponding to the gear connected to the frame, the rack meshing with the gear for transmission.

[0013] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0014] In this invention, when the heating element of the tunnel oven moves up and down, the adjusting component and the linkage component move synchronously. The adjusting component uses gear movement to mesh with a rack, enabling a support shaft and a guide plate to rotate. The linkage component causes multiple guide plates to rotate synchronously, changing the airflow direction from vertical to oblique, increasing the coverage area of ​​hot air on the biscuits. Furthermore, the synchronous displacement of the heating element prevents the problem of premature heat loss due to the longer movement path of the hot air. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 for Figure 1 A cross-sectional view;

[0017] Figure 3 This is a schematic diagram of the hot air circulation component structure;

[0018] Figure 4 for Figure 3 Enlarged view of the structure at point A.

[0019] Reference numerals in the attached drawings: 1. Main body of tunnel oven; 2. Circulating fan; 3. Air inlet pipe; 4. Air outlet pipe; 5. Adjusting component; 6. Support shaft; 7. Guide plate; 8. Linkage component; 9. Mounting frame; 10. First telescopic device; 11. Electric heating element; 13. Flow guide box; 14. Diversion pipe; 15. Air inlet hood; 16. Connecting rod; 17. Rotating rod; 18. Gear; 19. Rack. Detailed Implementation

[0020] Example 1

[0021] like Figures 1-4 As shown, the present invention proposes a hot air circulation structure for compressed biscuits, including a hot air circulation component, which is installed on the main body 1 of a tunnel oven.

[0022] The hot air circulation assembly includes a blowing assembly and an adjusting assembly. The blowing assembly includes a circulating fan 2, an air inlet pipe 3, and an air outlet pipe 4. Multiple circulating fans 2 are arranged in parallel, and the air inlets and outlets of the circulating fans 2 are connected to the air inlet pipe 3 and the air outlet pipe 4, respectively. The adjusting assembly includes an adjusting component 5, a support shaft 6, a guide plate 7, and a linkage component 8. Multiple parallel support shafts 6 are rotatably mounted on the tunnel oven body 1. Adjusting components 5 and linkage components 8 are set at both ends of the support shafts 6, and guide plates 7 are connected to each support shaft 6. When the hot air circulation assembly is in use, the circulating fan 2 keeps the hot air circulating through the air inlet pipe 3 and the air outlet pipe 4. The linkage component 8 drives the multiple support shafts 6 and the guide plates 7 to rotate and change the airflow direction.

[0023] Example 2

[0024] like Figures 2-3As shown, the present invention proposes a hot air circulation structure for compressed biscuits. Compared with Embodiment 1, this embodiment describes the detailed structure of the tunnel oven body 1. In an optional embodiment, the tunnel oven body 1 is connected to an installation frame 9, a first telescopic device 10, and an electric heating tube 11. Multiple installation frames 9 are arranged in parallel. Multiple first telescopic devices 10 are connected to the tunnel oven body 1. The telescopic ends of the first telescopic devices 10 are connected to the installation frame 9. Multiple parallel electric heating tubes 11 are connected to the installation frame 9. The first telescopic device 10 is selected from, but is not limited to, a hydraulic cylinder.

[0025] Example 3

[0026] like Figures 2-4 As shown, the present invention proposes a hot air circulation structure for compressed biscuits. Compared with Embodiment 2, this embodiment describes the detailed structure of the hot air circulation component. The hot air circulation component also includes a guide box 13, which is connected to the mounting frame 9. One end of the guide box 13 is connected to the air outlet pipe 4.

[0027] In an optional embodiment, a plurality of diversion pipes 14 are connected to the air outlet duct 4, one end of which is connected to the flow guide box 13; the diversion pipes 14 increase the coverage area of ​​the air outlet duct 4 to make the hot air evenly distributed.

[0028] In an optional embodiment, an air inlet shroud 15 is connected to the air inlet duct 3; the air inlet shroud 15 increases the air intake of the air inlet duct 3 and reduces the noise that may be caused by excessive wind speed.

[0029] In an optional embodiment, the linkage 8 consists of a connecting rod 16 and a rotating rod 17. The number of rotating rods 17 corresponds to the number of support shafts 6. The rotating rods 17 are connected to the support shafts 6. One end of each rotating rod 17 has a notch. The rotating rods 17 are arranged vertically. The connecting rods 16 are rotatably connected to the notches of the multiple rotating rods 17. Each notch is connected to a rod body. The rotating rods 17 have through holes through which the rod bodies pass, thereby achieving a rotatable connection. The connecting rods 16 are arranged horizontally.

[0030] In an optional embodiment, the adjusting member 5 consists of a gear 18 and a rack 19. Both ends of any one of the support shafts 6 are connected to the gear 18, and the rack 19 corresponding to the gear 18 is connected to the frame. The rack 19 meshes with the gear 18 for transmission. The gear 18 can move up and down synchronously with the mounting frame 9 to contact the rack 19, thereby realizing the change in height while the angle changes, preventing the temperature change caused by the angle change from affecting the baking quality.

[0031] In summary, when this utility model is used, the tunnel oven body 1 is started, and the output end of the first telescopic device 10 drives the mounting frame 9 to move vertically closer to or away from the belt conveyor used to transport compressed biscuits. The different distances between the heating tube 11 on the mounting frame 9 and the biscuits can increase or decrease the baking time of the biscuits. While the mounting frame 9 is moving, it will drive the gear 18 to move synchronously. The gear 18 meshes with the rack 19. Through the meshing of the two, a support shaft 6 is driven to rotate. The guide plate 7 on the support shaft 6 changes from a vertical state to an inclined state. The connecting rod 16 connected to the support shaft 6 will rotate synchronously. The connecting rod 16 drives the other connecting rods 16, as well as the support shaft 6 and the guide plate 7, to change their angles through the rotating rod 17. The multiple guide plates 7 change their angles synchronously to guide the airflow so that the hot air generated after contacting the heating tube 11 blows obliquely towards the biscuits. The hot air on the biscuits will change from vertical to inclined, increasing the coverage area of ​​the hot air on the compressed biscuits and preventing the surface moisture of the compressed biscuits from increasing and forming a hard shell, which will affect the baking quality.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A hot air circulation structure for compressed biscuits, characterized by, The utility model relates to a tunnel type oven, which comprises a tunnel type oven body (1), a hot air circulation assembly, a first telescopic device (10) and an electric heating pipe (11). The hot air circulation assembly is mounted on the tunnel type oven body (1) and comprises a blowing assembly and an adjusting assembly. The blowing assembly comprises a circulating fan (2), an air inlet pipe (3) and an air outlet pipe (4).

2. The hot-air circulation structure for compressed biscuits according to claim 1, wherein A plurality of circulating fans (2) are arranged in parallel.

3. The hot-air circulation structure for compressed biscuits according to claim 2, wherein The air inlet port and the air outlet port of the circulating fan (2) are connected to the air inlet pipe (3) and the air outlet pipe (4), respectively. The adjusting assembly comprises an adjusting member (5), a support shaft (6), a guide plate (7) and a linkage member (8).

4. The hot-air circulating structure for compressed biscuits according to claim 1, wherein A plurality of parallel support shafts (6) are rotatably arranged on the tunnel type oven body (1).

5. The hot-air circulating structure of a compressed biscuit according to claim 1, wherein The support shaft (6) is provided with the adjusting member (5) and the linkage member (8) at both ends.

6. The hot-air circulating structure of a compressed biscuit according to claim 1, wherein The support shaft (6) is connected with the guide plate (7).

7. The hot-air circulating structure of a compressed biscuit according to claim 1, wherein In the use state of the hot air circulation assembly, the circulating fan (2) keeps the hot air circulating through the air inlet pipe (3) and the air outlet pipe (4). The linkage member (8) drives the plurality of support shafts (6) and the guide plates (7) to rotate to change the direction of the wind. The tunnel type oven body (1) is connected with a mounting frame (9), the first telescopic device (10) and the electric heating pipe (11). A plurality of parallel mounting frames (9) are arranged. The first telescopic device (10) is connected to the tunnel type oven body (1). The telescopic end of the first telescopic device (10) is connected to the mounting frame (9). A plurality of parallel electric heating pipes (11) are connected to the mounting frame (9). The hot air circulation assembly further comprises a flow guide box (13) connected to the mounting frame (9). One end of the flow guide box (13) is connected to the air outlet pipe (4). A plurality of shunt pipes (14) are connected to the air outlet pipe (4). One end of the shunt pipe (14) is connected to the flow guide box (13). An air inlet cover (15) is connected to the air inlet pipe (3). The linkage member (8) is composed of a connecting rod (16) and a rotating rod (17). The number of the rotating rods (17) corresponds to the number of the support shafts (6). The rotating rod (17) is connected to the support shaft (6). One end of the rotating rod (17) is provided with a notch. The rotating rod (17) is arranged in a vertical direction. The connecting rod (16) is rotatably connected to the notch of the plurality of rotating rods (17). The connecting rod (16) is arranged in a horizontal direction. The adjusting member (5) is composed of a gear (18) and a rack (19). The gear (18) is connected to the support shaft (6) at both ends. The rack (19) corresponding to the gear (18) is connected to the rack. The rack (19) is in meshing transmission connection with the gear (18).

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