An oven with single-fan double-vortex hot air circulation system

Abstract

The utility model relates to the technical field of oven, specifically disclose a kind of oven with single fan double vortex hot air circulation system, including cabinet, the cabinet door of hinged in the open mouth of cabinet front end, fixed in the forepart of the inner chamber of cabinet's shelf, install in the rear portion of the inner chamber of cabinet's fan and the electric heating element of being located in the periphery of fan, fan includes motor fixed in the middle part of the rear wall of cabinet and the combined fan blade of central fixed sleeve on motor power output shaft, combined fan blade includes inner layer blade and the outer layer blade of being located in the periphery of inner layer blade;Backboard is fixed in the position of the inner chamber of cabinet and located in the front side of combined fan blade, and the region of backboard middle part corresponds to inner layer blade is equipped with middle air hole, and the region of backboard two sides corresponds to outer layer blade is equipped with side air hole respectively. Better solved the problem that hot air distribution is uneven when oven is carried out food baking.

Description

Technical Field

[0001] This utility model relates to the field of oven technology, specifically an oven with a single fan and a dual vortex hot air circulation system. Background Technology

[0002] In the baking industry, convection ovens achieve even baking of food through hot air circulation. However, existing convection ovens generally use a single-fan single-vortex or dual-fan single-vortex hot air structure, which has the following drawbacks: Uneven heat distribution results in uneven browning and cooking of food, severely impacting baking quality.

[0003] To ensure uniformity, users need to frequently adjust the position of the food or extend the baking time, which reduces baking efficiency and increases operational complexity.

[0004] Therefore, there is an urgent need for an oven that can achieve even distribution of hot air and improve baking quality. Utility Model Content

[0005] The purpose of this invention is to provide an oven with a single fan and a dual vortex hot air circulation system to solve the problem of uneven hot air distribution in current ovens when baking food.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oven with a single-fan dual-vortex hot air circulation system, comprising a cabinet, a door hinged to the front opening of the cabinet, a shelf fixed to the front of the inner cavity of the cabinet, a fan installed at the rear of the inner cavity of the cabinet, and an electric heating element disposed around the fan. The fan includes a motor fixed to the middle of the rear wall of the cabinet and a combined fan blade centrally fixedly mounted on the power output shaft of the motor. The combined fan blade includes an inner layer blade and an outer layer blade disposed around the inner layer blade. A back plate is fixed in the inner cavity of the cabinet at the position in front of the combined fan blade. A central air hole is provided in the middle of the back plate corresponding to the area of ​​the inner layer blade, and side air holes are provided on both sides of the back plate corresponding to the areas of the outer layer blade.

[0007] Preferably, the combined fan blades include a star-shaped plate centrally fixedly mounted on the motor power output shaft. Multiple fins are evenly distributed along the circumferential direction on the outer edge of the star-shaped plate. The outer blades are folded edge structures of the outer edge fins of the star-shaped plate. The star-shaped plate has slots at positions corresponding to the root of the fins, and the inner blades are respectively located on one side of the slots.

[0008] Preferably, the two ends of the back plate are respectively provided with backward-folding bends, and the bends are fixedly connected to the inner cavity side wall of the box by screws.

[0009] Preferably, a partition ring is fixed on the rear wall of the back plate at a position around the central air vent.

[0010] Preferably, the number of outer edge fins of the star-shaped plate ranges from 3 to 6.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The oven with a single fan and a double vortex hot air circulation system of this utility model can generate a layered vortex by using a composite arrangement of inner and outer blades and a dual-channel arrangement of ventilation holes on the back plate. This helps to form a three-dimensional circulation of hot air in the inner cavity of the oven, which effectively solves the problem of uneven hot air distribution when baking food and significantly improves the efficiency of food baking.

[0012] 2. The oven with a single fan and dual vortex hot air circulation system involved in this utility model adopts a single fan and dual vortex hot air method, which helps to improve heat exchange efficiency and avoids the setting of multiple fans, thereby facilitating the reduction of energy consumption. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the entire utility model; Figure 2 This is a schematic diagram of the main structure of the fan of this utility model; Figure 3 This is a schematic diagram of the main structure of the combined fan blade of this utility model; Figure 4 This is a three-dimensional structural diagram of the back plate of this utility model.

[0014] In the diagram: 1 - Box; 2-Box door; 3-tier shelf; 4-Fan; 4.1-Motor; 4.2-Combined fan blades; 4.2.1-Star plate; 4.2.2-Outer blades; 4.2.3-Slot; 4.2.4-Inner blades; 5-Electric heating element; 6-Back panel; 6.1-Central air vent; 6.2-Side air vent; 6.3-Separation ring; 6.4-Bend section. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: an oven with a single fan and a double vortex hot air circulation system, including a box body 1, a box door 2 hinged to the front opening of the box body 1, a shelf 3 fixed to the front of the inner cavity of the box body 1, a fan 4 installed in the rear of the inner cavity of the box body 1, and an electric heating element 5 disposed around the fan 4. The fan 4 includes a motor 4.1 fixed to the middle of the rear wall of the housing 1 and a combined fan blade 4.2 centrally fixed and mounted on the power output shaft of the motor 4.1. The combined fan blade 4.2 includes an inner blade 4.2.4 and an outer blade 4.2.2 located around the inner blade 4.2.4. The specific structure of the combined fan blade 4.2 is as follows: the combined fan blade 4.2 includes a star plate 4.2.1 centrally fixed and mounted on the power output shaft of the motor 4.1. The outer edge of the star plate 4.2.1 has multiple fins evenly distributed circumferentially. The outer blade 4.2.2 is a folded edge structure of the outer edge fins of the star plate 4.2.1. The star plate 4.2.1 has slots 4.2.3 respectively at the positions corresponding to the root of the fins. The inner blades 4.2.4 are respectively located on one side of the slots 4.2.3. The slot 4.2.3 is used as the air inlet channel at the inner blade 4.2.4. The number of outer edge fins of the star plate 4.2.1 ranges from 3 to 6, with 6 fins being the optimal number.

[0017] A back plate 6 is fixed to the inner cavity of the housing 1, located in front of the combined fan blades 4.2. A central air vent 6.1 is provided in the middle of the back plate 6, corresponding to the area of ​​the inner blades 4.2.4. Side air vents 6.2 are provided on both sides of the back plate 6, corresponding to the areas of the outer blades 4.2.2. The back plate 6 has backward-folding bends 6.4 at both ends, which are fixed to the side wall of the inner cavity of the housing 1 with screws. A partition ring 6.3 is fixed to the rear wall of the back plate 6, around the central air vent 6.1.

[0018] In summary, the combined fan blades 4.2 in fan 4 consist of an inner blade 4.2.4 and an outer blade 4.2.2, forming an "inner + outer" double-stage blade structure. The airflow generated by the inner blade 4.2.4 is separated by the partition ring 6.3 and blown out through the central air hole 6.1 to form an inner vortex. The airflow generated by the outer blade 4.2.2 is blown out through the side air hole 6.2 to form an outer vortex. That is, the layered vortex is generated by the different angles of the inner and outer blades. In addition, the dual-channel back plate 6 matches the layered vortex, so that the hot air forms a three-dimensional circulation in the cavity of the chamber 1 to achieve uniform distribution of hot air. Combined with the existing air duct layout of the oven, a closed loop of airflow intake-heating-expulsion is achieved, improving heat exchange efficiency.

[0019] In addition, the electric heating element 5 is a ring-shaped electric heating wire assembly, specifically located on the rear side of the outer edge of the combined fan blade 4.2, that is, at the air inlet of the combined fan blade 4.2. The electric heating element 5 completes the heating of the air. Part of the heated air passes through the slot 4.2.3 and forms an inner vortex through the action of the inner blade 4.2.4, while the other part of the heated air forms an outer vortex through the action of the outer blade 4.2.2.

[0020] The temperature control system and side airflow ducts of the oven are designed according to the conventional settings of existing ovens. The main features of this invention are the improvement of the 4-blade fan structure and the 6-channel back panel. Other structures are not improvements of this technical solution and will not be described in detail.

[0021] It should be noted that in this article, relational terms such as first and second are only used to refer to... Distinguishing one entity or operation from another does not necessarily require or imply any such actual relationship or order between those entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oven with a single-fan dual-vortex hot air circulation system, comprising a housing (1), a door (2) hinged to the front opening of the housing (1), a shelf (3) fixed to the front of the inner cavity of the housing (1), a fan (4) installed at the rear of the inner cavity of the housing (1), and an electric heating element (5) disposed around the fan (4), characterized in that: The fan (4) includes a motor (4.1) fixed to the middle of the rear wall of the housing (1) and a combined fan blade (4.2) centrally fixed on the power output shaft of the motor (4.1). The combined fan blade (4.2) includes an inner blade (4.2.4) and an outer blade (4.2.2) disposed around the inner blade (4.2.4). The inner cavity of the housing (1) is fixed with a back plate (6) located in front of the combined fan blade (4.2). The middle part of the back plate (6) is provided with a central air hole (6.1) corresponding to the inner blade (4.2.4), and the two sides of the back plate (6) are provided with side air holes (6.2) corresponding to the outer blade (4.2.2).

2. An oven with a single-fan dual-vortex hot air circulation system according to claim 1, characterized in that: The combined fan blade (4.2) includes a star-shaped plate (4.2.1) centrally fixedly mounted on the power output shaft of the motor (4.1). The outer edge of the star-shaped plate (4.2.1) has multiple fins evenly distributed circumferentially. The outer blade (4.2.2) is a folded edge structure of the outer edge fins of the star-shaped plate (4.2.1). The star-shaped plate (4.2.1) has slots (4.2.3) at positions corresponding to the root of the fins. The inner blades (4.2.4) are respectively located on one side of the slots (4.2.3).

3. An oven with a single-fan dual-vortex hot air circulation system according to claim 1, characterized in that: The back plate (6) has a backward-folding bend (6.4) at both ends, and the bend (6.4) is fixed to the inner wall of the box (1) with screws.

4. An oven with a single-fan dual-vortex hot air circulation system according to claim 1, characterized in that: A partition ring (6.3) is fixed on the rear wall of the back plate (6) at the position outside the central air hole (6.1).

5. An oven with a single-fan dual-vortex hot air circulation system according to claim 2, characterized in that: The number of outer edge fins of the star-shaped plate (4.2.1) ranges from 3 to 6.

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