Fan blade structure and oven with same

Abstract

The invention belongs to the related technical field of ovens, and discloses a fan blade structure and an oven with the same. The fan blade structure comprises a back plate, blades rotatably mounted on the back plate, and positioning pieces, wherein each blade comprises two arc-shaped plates which are connected with each other and are symmetrically arranged relative to the rotating axis, and concave surfaces of every two two arc-shaped plates are windward surfaces; and the positioning pieces are fixed on the back plate, and the positioning pieces are configured to limit rotation of the bladesand adjust blade included angles of the blades. Each blade is arranged to be the two arc-shaped plates which are connected and symmetrically arranged relative to the rotating axis, the concave faces of every two arc-shaped plates are windward faces, vortexes cannot be generated during forward rotation or reverse rotation, it can be guaranteed that the air volumes generated during forward rotationand reverse rotation of the fan blade structure are the same, and in addition, the concave faces of the arc-shaped plates can form windward faces, so that larger air volume is generated. Meanwhile, the rotation of the blades is limited by matching with the positioning pieces, and the blades are ensured to be in a required blade included angle state. The width of the positioning pieces can be adjusted as required so as to change the blade included angle of the blades.

Description

technical field [0001] The invention relates to the technical field related to ovens, in particular to a fan blade structure and an oven with the same. Background technique [0002] When using a domestic oven, the key factor affecting the baking effect of food is the uniformity of the temperature inside the oven. If the temperature distribution inside the oven is not uniform, it will lead to uneven coloring of the baked food, and even raw and cooked food. Most ovens now have a forced convection mode, that is, the back panel has heating elements and fan blades, especially when baking multi-layered food, the fan blades on the back drive the gas flow inside the oven cavity to adjust the temperature distribution . But even so, in existing ovens, the fan blades generally rotate in one direction, that is, clockwise (forward rotation), which will cause poor color uniformity of the baked food, that is, half of the food has been colored, and the other half is not colored. [0003]...

AI Technical Summary

Problems solved by technology

Therefore, the blades of the existing reversible fan blades are straight guide vanes, but the straight guide vane fan blade has the following problems: the straight guide vane fan blade has a large circumferential velocity component when rotating, so that the middle of the oven A central vortex is generated at the position facing the fan blade

[0004] There is also a diamond-shaped fan blade structure, which will not generate vortices during forward and reverse rotation, but its volume is relatively large, the fan blade is not blade-shaped, and the windward side is convex outward, and the air volume generated is small

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