Optimized structure of oven hot air circulation

Abstract

The utility model discloses a drying oven hot air circulation optimization structure belongs to the technical field of baking equipment. Structure aims at solving the problem of uneven heating caused by the fixed hot air flow field of existing drying oven and the poor stability of movable storage rack. Structure includes box, movable storage rack and bottom wheel of storage rack bottom, and its core lies in, is provided with the flow guide mechanism and fixed mechanism in the box. The flow guide mechanism realizes the accurate adjustment to the opening angle of multiple groups of flow guide plates through the linkage of external draw bar linkage main rod, connecting rod and carousel, thereby optimizing the control hot air circulation path. The fixed mechanism rotates through motor drive groove disc, and realizes the automatic clamping locking to storage rack bottom wheel through the transmission cooperation of fixed rod, sliding block and clamping ring. The utility model can flexibly control the hot air flow direction, significantly improves the heating uniformity, and through the automatic locking storage rack, ensures the stability and safety of the baking process, and the structure is ingenious, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to the field of baking equipment technology, and in particular to an optimized structure for hot air circulation in an oven. Background Technology

[0002] As a general-purpose heating device, drying ovens are widely used in many industrial production fields such as food processing, chemical industry, and material drying. Their basic working principle is to generate heat through heating elements and use a fan to force hot air to circulate within the oven, thereby uniformly and efficiently heating or drying materials placed on racks. Compared to static heating methods, hot air circulation significantly improves the efficiency of heat transfer and the uniformity of temperature distribution.

[0003] However, in many existing oven designs, the internal air duct structure used to guide hot air circulation, as well as the position and direction of the air outlets, are usually fixed. This fixed airflow design means that the hot air always circulates along a preset, unchangeable path inside the oven. When the type, size, stacking density, or placement of the materials being baked changes, this unchanging hot airflow field struggles to adapt to the new heating requirements.

[0004] Because a fixed hot air circulation path cannot provide targeted heat compensation or adjustment for specific areas, it often results in "dead zones" or "hot spots" within the chamber where temperatures are excessively high or low. This causes materials closer to the air vents or along the main airflow path to be overheated, while areas in corners or obstructed by other materials may be underheated, ultimately severely impacting the overall product yield and quality consistency. This design's lack of proactive control over the hot air circulation path is the root cause of the uneven heating problem.

[0005] Therefore, this invention proposes an optimized structure for hot air circulation in an oven to address the shortcomings of existing technologies. Utility Model Content

[0006] In view of the problems of uneven heating caused by the fixed hot air circulation path and poor stability of movable shelves in the existing oven technology, this utility model aims to provide an oven hot air circulation optimization structure with improved structure that can effectively solve the above problems.

[0007] This utility model provides an optimized structure for hot air circulation in an oven, comprising: a box body, and a shelf movably disposed within the box body, the bottom of which is fixedly connected to multiple bottom wheels; a guide mechanism disposed within the box body, and a fixing mechanism disposed at the bottom of the box body for fixing the shelf.

[0008] The flow guiding mechanism includes a frame component and multiple sets of flow guide plates rotatably connected to the frame component. It also includes a pull rod, a main rod, multiple sets of connecting rods, and multiple sets of turntables. The pull rod is fixedly connected to the main rod, the main rod is rotatably connected to one end of the multiple sets of connecting rods, the other end of the multiple sets of connecting rods is rotatably connected to the multiple sets of turntables, and the multiple sets of turntables are coaxially fixedly connected to the multiple sets of flow guide plates, forming a complete mechanical linkage control structure.

[0009] Furthermore, the fixing mechanism includes a base block, a motor, a slotted plate, a fixing rod, a clamping ring, and a slider; the output shaft of the motor is fixedly connected to the slotted plate, a sliding groove is provided on the surface of the slotted plate, one end of the fixing rod is slidably connected in the sliding groove, and the other end is fixedly connected to the slider, which is slidably connected in the base block and fixedly connected to the clamping ring, thus forming a transmission device that converts rotational motion into clamping action.

[0010] Preferably, the architecture component includes an outer frame, and the plurality of deflectors are rotatably mounted within the outer frame.

[0011] Preferably, the outer frame has a groove for the connecting rod to rotate.

[0012] Preferably, one end of the pull rod extends to the outside of the housing, and the main rod can reciprocate along its axial direction to drive the multiple sets of connecting rods to swing.

[0013] Preferably, the base block is fixed to the bottom wall of the box, and a guide rail is provided inside the base block for the slider to slide.

[0014] Preferably, the slotted plate has two oppositely arranged sliding grooves, and the two fixed rods are slidably connected in the two sliding grooves to drive the two sliders to move synchronously towards or away from each other.

[0015] Preferably, the clamping ring is fixedly connected to the slider, and can clamp or release the bottom wheel under the action of the slider.

[0016] Preferably, the bottom wheel has a hole for the clamping ring to engage with it, so as to achieve a more secure locking.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem of uneven heating caused by the fixed hot air circulation path and difficulty in adjusting the flow field in existing ovens by setting up multiple sets of guide plates controlled by linkage of pull rod, main rod, connecting rod and turntable. It achieves the technical effect of being able to accurately control the hot air flow direction according to baking needs, thereby optimizing heat distribution and improving heating uniformity.

[0018] 2. This utility model solves the problem of unstable movement of movable racks due to impact during hot air circulation, which affects baking safety, by setting a fixing mechanism that is driven by a motor and linked by a fixing rod, slider and clamping ring. It achieves the technical effect of automatically and reliably locking the rack in a predetermined position, thereby ensuring the smooth progress of the baking process and improving the safety of equipment use.

[0019] 3. This utility model, by combining a manually adjustable airflow guide mechanism with an automated shelf fixing mechanism, solves the problems of existing technical solutions having limited functionality and failing to balance heating uniformity and operational stability. It achieves a compact structure, high functional integration, and both operational flexibility and reliability, and has high practical value. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the optimized hot air circulation structure of the oven proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the storage rack for the optimized hot air circulation structure of the oven proposed in this utility model; Figure 3 This is a schematic diagram of the outer frame of the oven hot air circulation optimization structure proposed in this utility model; Figure 4 This is a schematic diagram of the base block of the optimized hot air circulation structure for the oven proposed in this utility model; Figure 5 This is a schematic diagram of the motor structure of the optimized hot air circulation structure for the oven proposed in this utility model.

[0021] Legend: 1. Box body; 2. Shelf; 3. Flow guiding mechanism; 31. Tie rod; 32. Main rod; 33. Connecting rod; 34. Turntable; 35. Architectural components; 351. Air guide plate; 352. Outer frame; 4. Fixing mechanism; 41. Base block; 42. Motor; 43. Groove; 44. Fixing rod; 45. Clamping ring; 46. Slider; 47. Bottom wheel. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 5 , the embodiment of the present utility model provides an oven hot air circulation optimization structure, which aims to solve the problems that the hot air flow field in the existing oven is difficult to accurately adjust, resulting in uneven heating, and the movable rack is prone to shaking or displacement under the impact of hot air.

[0024] as shown in Figure 1 and Figure 2 , the optimized hot air circulation structure of an oven comprises a box body 1 and a rack 2 movably arranged in the box body 1. The box body 1 serves as a bearing frame of the whole oven, and the internal space is used for baking operation; the rack 2 is used for bearing materials to be baked, and in order to facilitate loading and taking out of materials, a plurality of bottom wheels 47 are fixedly connected to the bottom of the rack 2.

[0025] The flow guide mechanism 3 is the key to realizing hot air circulation optimization, and the whole mechanism takes the frame assembly 35 as a basis, as Figure 1 and Figure 3 shown. The frame assembly 35 mainly comprises an outer frame 352, the outer frame 352 partitions the inner area of the box body 1 to form a channel for hot air flow. Inside the outer frame 352, a plurality of groups of flow guide plates 351 are rotationally connected, these flow guide plates 351 are core components for directly adjusting the direction of hot air, and the change of the opening and closing angle thereof can accurately control the flow direction of hot air. In order to facilitate the rotation of the connecting rods 33, a groove is formed on the outer frame 352, ensuring that no interference occurs during the movement of the connecting rods 33.

[0026] The control part of the flow guide mechanism 3 comprises a pull rod 31, a main rod 32, a plurality of groups of connecting rods 33 and a plurality of groups of turntables 34, which realize linkage control on the flow guide plates 351 through precise mechanical connection. The pull rod 31 is fixedly connected with the main rod 32, wherein one end of the pull rod 31 extends to the outside of the box body 1, which is convenient for operators to push and pull manually. The main rod 32 is rotationally connected with one end of the plurality of groups of connecting rods 33, and the main rod 32 can move back and forth along its axial direction. The other ends of the plurality of groups of connecting rods 33 are rotationally connected with the plurality of groups of turntables 34. When the main rod 32 moves back and forth, it will drive the connecting rods 33 to swing, and then drive the turntables 34 to rotate. The plurality of groups of turntables 34 are respectively coaxially and fixedly connected with the plurality of groups of flow guide plates 351, which means that the rotation of the turntables 34 will directly drive the flow guide plates 351 to open and close with the turntables 34 as the center to control the wind direction, so as to achieve the purpose of optimizing and finely adjusting the hot air circulation path.

[0027] as shown in Figure 1 and Figure 4As shown. The fixing mechanism 4 includes a base block 41, a motor 42, a slotted plate 43, a fixing rod 44, a clamping ring 45, and a slider 46. The base block 41 is fixed to the bottom wall of the housing 1, serving as the mounting platform for the fixing mechanism 4. A guide rail is provided inside the base block 41 for the slider 46 to slide, ensuring that the movement trajectory of the slider 46 is accurate and stable.

[0028] Motor 42 serves as the power source for the fixed mechanism 4, and its output shaft is fixedly connected to the slotted plate 43, such as... Figure 5 As shown. Two opposing sliding grooves are formed on the surface of the tray 43, forming the core structure for motion conversion. One end of the fixing rod 44 is slidably connected to the sliding groove of the tray 43, while the other end is fixedly connected to the slider 46. The two fixing rods 44 are slidably connected to the two sliding grooves respectively, so that when the motor 42 drives the tray 43 to rotate, it drives the two sliders 46 to move synchronously towards or away from each other in the guide rail within the base block 41. The sliders 46 are fixedly connected to the clamping rings 45, so when the sliders 46 move, the clamping rings 45 also move accordingly, clamping or releasing the bottom wheel 47 of the shelf 2. Specifically, when the two sliders 46 slide synchronously towards each other, they will cause a pair of clamping rings 45 to clamp inwards, securing the holes on the bottom wheel 47, thereby achieving stable fixation of the shelf 2 and preventing it from shaking under the action of hot air.

[0029] Reference Figure 1 and Figure 3 The structural component 35 of the airflow guiding mechanism 3 includes an outer frame 352, which forms a rectangular frame with multiple vertically arranged grooves on the inner sides of its two sides. These grooves are designed to prevent interference when the connecting rod 33 rotates. The outer frame 352 is fixedly connected to the inner wall of the housing 1 by bolts through connectors around its perimeter. Its function is to separate the internal area of ​​the housing 1, provide a specific channel for the flow of hot air, and serve as the mounting base for the airflow guide plate 351.

[0030] Inside the outer frame 352, multiple sets of air deflectors 351 are rotatably connected. The air deflectors 351 are flat, blade-shaped structures, with their two ends rotatably connected to corresponding connection points on the outer frame 352 via rotating shafts. These air deflectors 351 are the actuators that directly change the airflow direction, and their openable / closable characteristic is key to optimizing hot air circulation.

[0031] The operating part of the flow guiding mechanism 3 includes a pull rod 31, a main rod 32, multiple sets of connecting rods 33, and multiple sets of turntables 34. The pull rod 31 is a slender rod-shaped structure, with one end extending to the outside of the housing 1 for easy pushing and pulling by the operator. The main rod 32 is a cylindrical rod-shaped structure, fixedly connected to one end of the pull rod 31, and can move back and forth inside the housing 1 along its axial direction.

[0032] Multiple sets of connecting rods 33 are short rod-shaped structures, one end of which is rotatably connected to the main rod 32. When the main rod 32 moves back and forth, it will cause the connecting rods 33 to swing. The other end of the connecting rods 33 is rotatably connected to multiple sets of turntables 34. The turntables 34 are circular disc-shaped structures, and each set of turntables 34 is coaxially fixedly connected to the corresponding guide plate 351. This connection relationship ensures that the rotation of the turntables 34 will directly drive the guide plates 351 to open and close around the central axis of the turntables 34.

[0033] When the operator manually pushes or pulls the lever 31, the lever 31 drives the main rod 32 to move back and forth. The movement of the main rod 32, through the swinging of multiple connecting rods 33, converts the linear motion into the rotational motion of the turntable 34. The rotation of the turntable 34, in turn, drives the guide plate 351 fixedly connected to it to achieve synchronous opening and closing. By changing the opening and closing angle of the guide plate 351, the flow direction and flow rate distribution of hot air in the chamber 1 can be precisely controlled, thereby achieving personalized hot air circulation optimization in the baking area and improving the uniformity of heating.

[0034] As a preferred embodiment, refer to Figure 3 The architecture component 35 is specifically an outer frame 352. Multiple sets of guide plates 351 can be rotatably installed inside the outer frame 352. Furthermore, a groove is provided on the outer frame 352 at a position corresponding to the range of motion of the connecting rod 33. The groove provides sufficient space for the swing of the connecting rod 33 and avoids motion interference.

[0035] In a preferred embodiment, one end of the pull rod 31 extends to the outside of the housing 1, allowing the operator to make adjustments without opening the housing 1. The main rod 32 can reciprocate along its own length under its drive, thereby causing the connecting rod 33, which is rotatably connected to it, to swing.

[0036] As a preferred embodiment, refer to Figure 4 The base block 41 is fixed to the bottom wall of the box 1 by welding or bolting, and a guide rail is integrally formed or embedded inside the base block 41. The slider 46 is slidably connected to the guide rail, which ensures the stability and directional accuracy of the slider 46 during reciprocating motion.

[0037] As a preferred embodiment, refer to Figure 4 and Figure 5The tray 43 has two grooves arranged opposite each other along its diameter. The two fixed rods 44 are slidably connected in these two grooves. When the motor 42 drives the tray 43 to rotate, the structure can drive the two sliders 46 to move synchronously towards or away from each other, thereby driving the clamping ring 45 fixedly connected to the slider 46 to clamp or loosen the bottom wheel 47 synchronously. More preferably, in order to achieve a more secure locking effect, a hole is provided on the bottom wheel 47 for the front end of the clamping ring 45 to be inserted. When the clamping ring 45 is clamped, it can be inserted into the hole to form a locking engagement, thereby greatly improving the stability of the shelf 2.

[0038] The working principle is as follows: In use, according to the specific baking process requirements, the operator can manually push and pull the lever 31 set on the outside of the chamber 1. The lever 31 drives the main rod 32, which is fixedly connected to it, to move back and forth along its axis. The linear motion of the main rod 32 is converted into the rotational motion of the turntable 34 through the connecting rod 33, which is rotatably connected to it. Since the turntable 34 is coaxially fixedly connected to the guide plate 351, the rotation of the turntable 34 will directly drive multiple sets of guide plates 351 to open and close synchronously. By changing the opening and closing angle of the guide plate 351, the circulation path and wind speed distribution of hot air inside the chamber 1 can be precisely changed, thereby solving the problem of fixed hot air flow field and uneven heating that is common in the prior art.

[0039] After adjusting the airflow and pushing the rack 2 loaded with materials into the predetermined position inside the box 1 via its bottom wheels 47, the motor 42 of the fixing mechanism 4 is started. The motor 42 drives the tray 43 to rotate. Since one end of the fixing rod 44 is slidably connected in the groove of the tray 43, the rotation of the tray 43 will drive the fixing rod 44 to move, which in turn drives the slider 46, which is fixedly connected to the other end of the fixing rod 44, to slide in the guide rail of the base block 41. Since the tray 43 has two opposing grooves, the two sliders 46 will move towards each other synchronously, and drive the clamping ring 45, which is fixedly connected to it, to tighten inward. Finally, the clamping ring 45 clamps or engages with the hole on the bottom wheel 47, and firmly locks the entire rack 2 to the bottom of the box 1, effectively preventing the rack 2 from shaking or shifting under the impact of strong hot air, and solving the stability and safety problems during the baking process.

Claims

1. An optimized structure for hot air circulation in an oven, comprising a cabinet (1) and a shelf (2) movably disposed within the cabinet (1), wherein the bottom of the shelf (2) is fixedly connected with a plurality of bottom wheels (47). Its features are, The oven hot air circulation optimization structure further includes: a flow guiding mechanism (3) disposed in the box body (1), the flow guiding mechanism (3) includes a frame component (35), and multiple sets of flow guiding plates (351) are rotatably connected to the frame component (35). The flow guiding mechanism (3) also includes a pull rod (31), a main rod (32), multiple sets of connecting rods (33) and multiple sets of turntables (34); The pull rod (31) is fixedly connected to the main rod (32), the main rod (32) is rotatably connected to one end of the multiple sets of connecting rods (33), the other end of the multiple sets of connecting rods (33) is rotatably connected to the multiple sets of turntables (34), and the multiple sets of turntables (34) are respectively coaxially fixedly connected to the multiple sets of guide plates (351). And a fixing mechanism (4) is provided at the bottom of the box (1) for fixing the shelf (2). The fixing mechanism (4) includes a base block (41), a motor (42), a slot plate (43), a fixing rod (44), a clamping ring (45), and a slider (46). The output shaft of the motor (42) is fixedly connected to the slotted plate (43). A sliding groove is provided on the surface of the slotted plate (43). One end of the fixed rod (44) is slidably connected to the sliding groove, and the other end is fixedly connected to the slider (46). The slider (46) is slidably connected to the base block (41) and fixedly connected to the clamping ring (45).

2. The optimized hot air circulation structure for the oven according to claim 1, characterized in that, The architecture component (35) includes an outer frame (352), and the multiple sets of guide vanes (351) are rotatably mounted within the outer frame (352).

3. The optimized hot air circulation structure for the drying oven according to claim 2, characterized in that, The outer frame (352) has a groove for the connecting rod (33) to rotate.

4. The optimized hot air circulation structure for the oven according to claim 1, characterized in that, One end of the pull rod (31) extends to the outside of the housing (1), and the main rod (32) can reciprocate along its axis to drive the multiple sets of connecting rods (33) to swing.

5. The optimized hot air circulation structure for the oven according to claim 1, characterized in that, The base block (41) is fixed to the bottom wall of the box (1), and a guide rail is provided inside the base block (41) for the slider (46) to slide.

6. The optimized hot air circulation structure for the drying oven according to claim 1, characterized in that, The slot (43) has two oppositely arranged sliding grooves, and the two fixed rods (44) are respectively slidably connected in the two sliding grooves to drive the two sliders (46) to move synchronously towards each other or away from each other.

7. The optimized hot air circulation structure for the drying oven according to claim 6, characterized in that, The clamping ring (45) can clamp or release the bottom wheel (47) under the action of the slider (46).

8. The optimized hot air circulation structure for the drying oven according to claim 7, characterized in that, The bottom wheel (47) has a hole for the clamping ring (45) to be inserted.

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