A fan blade for an oven

Abstract

The utility model relates to the technical field of fan blades, and discloses a fan blade for an oven, comprising a base plate and front fan blades uniformly spaced around the circumference of the base plate on one side of the base plate, and rear fan blades protruding around the circumference of the base plate on the side of the base plate away from the front fan blades. The front fan blade and the rear fan blade in the fan blade are located on both sides of the base plate, and the rear fan blade drives the gas behind the base plate to flow, quickly dissipates the heat behind the base plate, and cooperates with the front fan blade to further transfer the heat to the inside of the oven, thereby improving the heat utilization rate and avoiding the accumulation of heat behind the base plate, thereby improving the safety of the oven when in use.

Description

Technical Field

[0001] The utility model relates to the technical field of fan blades, in particular to a fan blade used for an oven. Background Art

[0002] The hot air chamber of the electric oven is equipped with fan blades and heating tubes. When the oven is working, the fan blades rotate, driving the air to flow quickly inside the oven tank and the hot air chamber. The cold air is heated by the heating tube and then sent into the tank, forming a hot air circulation, which is used to bake the food in the tank.

[0003] The Chinese patent application number 202010889816.X discloses an impeller structure for cooking equipment and an oven having the structure, wherein the impeller structure includes a disc-shaped main board and fan blades are arranged at intervals along the circumferential direction on the first disk surface of the main board, each fan blade is strip-shaped in shape and extends inward and outward relative to the main board and is arranged perpendicular to the first disk surface, and the outer peripheral side of the first disk surface of the main board is provided with first hinge seats corresponding to the fan blades at intervals along the circumferential direction, and also includes connecting rods corresponding to the fan blades, the first end of each fan blade is rotatably connected to the corresponding first hinge seat and the second end is rotatably connected to the first end of the corresponding connecting rod, and the second end of each connecting rod is located on a trajectory circle with the center of the first disk surface as the center and can slide circumferentially along the trajectory circle, and the trajectory circle is located in the middle of the first disk surface. In this scheme, the fan blades are arranged outward on the main board, and can disturb the air in the oven when rotating, so that the heating in the oven is more uniform.

[0004] At present, the products on the market are consistent with the above solution. The fan blades are only located on the outward side of the mainboard. Due to the certain fitting distance between the mainboard and the inner wall of the oven, the internal air lacks the disturbance of the fan blades in a small space and cannot frequently exchange heat with the external air, resulting in the temperature of this part of the air being significantly higher than the temperature of other places in the oven. There are problems such as waste of heat, large temperature difference between the inside and outside of the mainboard, and safety hazards caused by excessive temperature. Utility Model Content

[0005] The utility model provides a fan blade for an oven to solve the shortcomings of the prior art that the heat behind the base plate cannot be dissipated in time, resulting in heat accumulation and waste, and excessive temperature causing safety hazards.

[0006] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0007] A fan blade for an oven comprises a base plate and front blades evenly spaced around the circumference of the base plate on one side of the base plate, and rear blades protruding around the circumference of the base plate on the side of the base plate away from the front blades.

[0008] With the above solution, the front fan blades and the rear fan blades are located on both sides of the base plate. When the base plate rotates, the front fan blades drive the air inside the oven to flow, while the rear fan blades drive the gas behind the base plate to flow, quickly dissipating the heat behind the base plate, and cooperating with the front fan blades to further transfer the heat to the inside of the oven, thereby improving the heat utilization rate and avoiding the accumulation of heat behind the base plate, thereby improving the safety of the oven when in use.

[0009] Preferably, the rear fan blades are formed by cutting the base plate and then vertically bending it.

[0010] By adopting the above solution, the rear fan blades are formed without adding extra weight, and the airflow behind the substrate is promoted while avoiding an increase in the energy consumption required for rotating the substrate.

[0011] Preferably, the front fan blade includes a fixing plate attached to and fixed to the base plate, and a fan blade body that is bent from one end of the fixing plate to a side away from the base plate and formed perpendicular to the fixing plate.

[0012] With the above solution, after the fixing plate and the base plate are fixed, the fan blade body is vertically fixed on the base plate, and the air is driven to flow as the base plate rotates.

[0013] Preferably, the fixing plate is fixed to the base plate via a fixing structure, which includes a first through hole provided on the base plate, a second through hole provided on the fixing plate, and a rivet passing through the first through hole and the second through hole to rivet the base plate and the fixing plate.

[0014] By adopting the above solution, after the rivet passes through the first through hole and the second through hole in sequence, the rivet is thickened by a machine to form a nail head, so that the fixing plate and the base plate are fixedly connected.

[0015] Preferably, at least two groups of fixing structures are arranged between the fixing plate and the base plate.

[0016] By adopting the above solution, two groups are provided to ensure that the fixed plate and the base plate will not be separated from each other and will not rotate relative to each other. Multiple groups are provided to further improve the connection strength between the fixed plate and the base plate.

[0017] Preferably, the fan blade body and the rear fan blade are aligned or staggered.

[0018] With the above solution, both the alignment setting and the offset setting can drive the air to flow faster, and you can choose according to different needs.

[0019] Preferably, the fixing plate blocks the gap generated after the substrate is cut and bent.

[0020] Preferably, the number of front blades and rear blades is the same or different.

[0021] By adopting the above scheme, the air can be accelerated whether the quantity is consistent or inconsistent. The consistent quantity makes the air flow more stable and uniform, and ensures that the overall force on the fan blade is more balanced. The quantity of the front and rear fan blades can also be adjusted according to the inconsistent air flow rate requirements on both sides of the substrate to make the two quantities inconsistent.

[0022] The utility model adopts the above technical scheme and has significant technical effects: the front fan blades and the rear fan blades are located on both sides of the base plate. When the base plate rotates, the front fan blades drive the air to flow while the rear fan blades drive the gas behind the base plate to flow, so as to quickly dissipate the heat behind the base plate, and cooperate with the front fan blades to further transfer the heat to the inside of the oven, thereby improving the heat utilization rate and avoiding the accumulation of heat behind the base plate, thereby improving the safety of the oven when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 , Figure 2 and Figure 3 is an axonometric diagram of a fan blade used in an oven in an embodiment;

[0024] Figure 4 It is a disassembled diagram of a fan blade used for an oven in an embodiment.

[0025] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Base plate; 2. Front fan blade; 201. Fixing plate; 202. Fan blade body; 3. Rear fan blade; 4. First through hole; 5. Second through hole; 6. Rivet; 7. Gap. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] Example

[0028] A fan blade for an oven, referring to Figures 1 to 4 The invention comprises a base plate 1, which is arranged in a circular shape and has a through groove for mounting the base plate 1 at the axis of the base plate 1. Front blades 2 are evenly spaced around the base plate 1 on one side of the base plate 1, and rear blades 3 are spaced around the base plate 1 on the side of the base plate 1 away from the front blades 2.

[0029] The rear fan blade 3 is formed by cutting the outer ring wall of the base plate 1 inward for a distance and then bending it vertically. The front fan blade 2 includes a fixing plate 201 that is attached to and fixed to the base plate 1. One end of the fixing plate 201 is bent toward the side away from the base plate 1 to form a fan blade body 202 perpendicular to the fixing plate 201. The fan blade body 202 and the rear fan blade 3 are located on both sides of the base plate 1.

[0030] The number of front blades 2 and rear blades 3 is the same or different, and the blade body 202 and rear blades 3 are aligned or staggered. In this embodiment, the number of front blades 2 and rear blades 3 is the same, both are provided with seven, and the blade body 202 and rear blades 3 are staggered. After the fixing plate 201 is fixed on the base plate 1, the gap 7 generated by the base plate 1 due to cutting and bending to form the rear blades 3 is blocked.

[0031] The fixing plate 201 is fixed to the base plate 1 through a fixing structure, and the fixing structure includes a first through hole 4 provided on the base plate 1, a second through hole 5 provided on the fixing plate 201, and a rivet 6 that passes through the first through hole 4 and the second through hole 5 to rivet the base plate 1 and the fixing plate 201. After the rivet 6 passes through the first through hole 4 and the second through hole 5 in sequence, the rivet 6 is swaged by a machine to form a nail head, so that the fixing plate 201 and the base plate 1 are fixedly connected.

[0032] At least two groups of fixing structures are arranged between the fixing plate 201 and the base plate 1 . In this embodiment, three groups of fixing structures are arranged between each fixing plate 201 and the base plate 1 .

[0033] When the base plate 1 rotates, since the front fan blades 2 and the rear fan blades 3 are located on both sides of the base plate 1, the front fan blades 2 drive the air to flow while the rear fan blades 3 drive the gas behind the base plate 1 to flow, so as to quickly dissipate the heat behind the base plate 1, and cooperate with the front fan blades 2 to further transfer the heat to the inside of the oven, thereby improving the heat utilization rate and avoiding the accumulation of heat behind the base plate 1, thereby improving the safety of the oven when in use.

[0034] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A fan blade for an oven, comprising a base plate (1) and front fan blades (2) arranged at even intervals around the base plate (1) on one side of the base plate (1), characterized in that: A rear blade (3) is protrudingly provided at intervals around the circumference of the substrate (1) on a side of the substrate (1) away from the front blade (2); the rear blade (3) is formed by cutting the substrate (1) and then vertically bending it; the front blade (2) comprises a fixing plate (201) attached to and fixed to the substrate (1) and a blade body (202) formed by bending from one end of the fixing plate (201) to a side away from the substrate (1) and perpendicular to the fixing plate (201); the fixing plate (201) is fixed to the substrate (1) via a fixing structure; the fixing structure comprises a first through hole (4) provided on the substrate (1), a second through hole (5) provided on the fixing plate (201) and a rivet (6) passing through the first through hole (4) and the second through hole (5) to rivet the substrate (1) and the fixing plate (201); the number of the front blade (2) and the number of the rear blade (3) are the same or different.

2. The fan blade for an oven according to claim 1, characterized in that: At least two groups of fixing structures are arranged between the fixing plate (201) and the base plate (1).

3. The fan blade for an oven according to claim 1, characterized in that: The fan blade body (202) and the rear fan blade (3) are arranged in an aligned or staggered manner.

4. The fan blade for an oven according to claim 1, characterized in that: The fixing plate (201) blocks the gap (7) generated after the base plate (1) is cut and bent.

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