CN-122020893-A - Centrifugal axial flow fan, guide vane design method thereof, intelligent electrical appliance, equipment and medium

CN122020893ACN 122020893 ACN122020893 ACN 122020893ACN-122020893-A

Abstract

The disclosure provides a centrifugal axial flow fan, a guide vane design method thereof, an intelligent electrical appliance, equipment and a medium, wherein the method comprises the steps of determining the airflow speed of airflow in multiple dimensions for each partition on the guide vane; the method comprises the steps of determining the design result of a guide vane, wherein the airflow speed in multiple dimensions meets airflow constraint, the multiple dimensions at least comprise radial dimensions, axial dimensions and circumferential dimensions, determining the curved surface parameter of each subarea according to curved surface design criteria and the airflow speed in multiple dimensions, determining the molded line parameter of each subarea according to molded line design criteria and the airflow speed in multiple dimensions, and combining the curved surface parameter and the molded line parameter of each subarea. Through the combination of the axial dimension, the circumferential dimension and the radial dimension of the airflow, the airflow synchronously reaches the target position of the guide vane to be used as constraint, so that the flow separation of the airflow components in any dimension in the guide vane is avoided, the total pressure and static pressure efficiency of the fan are effectively improved, and the energy consumption is reduced.

Inventors

SHENG YANJUN
Ling Jieda
HU DAI

Assignees

宁波方太厨具有限公司

Dates

Publication Date: 20260512
Application Date: 20260122
Priority Date: 20260109

Claims (10)

1. The utility model provides a centrifugal axial flow fan's stator design method which characterized in that, the stator set up in centrifugal axial flow fan's diffusion chamber, the air current is followed centrifugal axial flow fan's air intake gets into the diffusion chamber, the method includes: Determining the airflow speed of the airflow in a plurality of dimensions aiming at each partition on the guide vane, wherein the airflow speed in the plurality of dimensions meets airflow constraint, the plurality of dimensions at least comprise radial dimensions, axial dimensions and circumferential dimensions, and the airflow constraint comprises that the duration of the airflow in each dimension is the same when the airflow reaches a target position; Determining the curved surface parameters of each partition according to the curved surface design criterion and the airflow speeds of the multiple dimensions; determining the molded line parameters of each subarea according to molded line design criteria and the airflow speeds of the multiple dimensions; and determining the design result of the guide vane by combining the curved surface parameters and the molded line parameters of each subarea.
2. The guide vane design method of claim 1, wherein the airflow constraint comprises: ; ; Wherein, the For displacement in the radial dimension, For the radius of the target location, For the radius of the air inlet opening, For the gas flow velocity in the radial dimension, For the displacement in the circumferential dimension, For the airflow velocity in the circumferential dimension, For displacement in the axial dimension, For the gas flow velocity in the axial dimension, Is a duration.
3. The guide vane design method as claimed in claim 1 or 2, wherein the radial dimension of the airflow velocity comprises: ; Wherein, the For the gas flow velocity in the radial dimension, R is the radius of the air inlet for the flow rate of the air flow, B is the width of the air inlet; And/or the airflow velocity in the axial dimension comprises: ; Wherein, the For the gas flow velocity in the axial dimension, For displacement in the axial dimension, For the gas flow velocity in the radial dimension, For the radius of the target location, The radius of the air inlet is the radius of the air inlet; and/or the airflow velocity in the circumferential dimension comprises: ; Wherein, the For the air flow velocity in the circumferential dimension, For the rotational angular velocity of the impeller of the centrifugal axial flow fan, For the incoming radius of the air flow, In order to be a slip coefficient, For the radius of each partition near the hub, The radius of each partition near the fan housing is set.
4. The guide vane design method as claimed in claim 1, wherein the curved surface parameters include axial distance; the surface design criteria include an axial distance criterion: ; Wherein, the For the axial distance of the partition i, For the gas flow velocity in the axial dimension, For the gas flow velocity in the radial dimension, For the radius of the target location, The radius of the air inlet is the radius of the air inlet; and/or, the curved surface parameters include a circumferential deflection angle; The curved surface design criteria include a circumferential deflection angle criterion: ; Wherein, the For the circumferential deflection angle of zone i, For the rotational angular velocity of the impeller of the centrifugal axial flow fan, For the gas flow velocity in the radial dimension, For the radius of the target location, Is the radius of the air inlet.
5. The guide vane design method as claimed in claim 1, wherein the profile parameters include a radius of curvature; the profile design criteria include a radius of curvature design criteria: ; Wherein, the For the radius of curvature of the partition i, As a function of the radius of curvature of the base, For a maximum airflow velocity in the circumferential dimension, K is a preset parameter for the airflow speed in the circumferential dimension; And/or, the profile parameters include angle of attack; the profile design criteria include angle of attack design criteria: ; Wherein, the For the angle of attack of the partition i, For the gas flow velocity in the radial dimension, For the air flow velocity in the circumferential dimension, Compensating for the angle of attack.
6. A centrifugal axial flow fan, characterized in that the guide vanes of the centrifugal axial flow fan are designed according to the guide vane design method of the centrifugal axial flow fan as claimed in any one of claims 1-5.
7. A smart appliance comprising the centrifugal axial flow fan of claim 6.
8. The smart appliance of claim 7, further comprising a controller and a voice receiving module; The controller is respectively and electrically connected with the centrifugal axial flow fan and the voice receiving module, and is used for sending a control instruction to the centrifugal axial flow fan according to the user instruction received by the voice receiving module, and the control instruction is used for adjusting the airflow speed of the centrifugal axial flow fan.
9. An electronic device comprising a processor and a memory, wherein the memory stores at least one instruction or at least one program, the at least one instruction or the at least one program loaded and executed by the processor to implement the vane design method of the centrifugal axial flow fan of any one of claims 1-5.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the vane design method of a centrifugal axial flow fan according to any one of claims 1-5.

Description

Centrifugal axial flow fan, guide vane design method thereof, intelligent electrical appliance, equipment and medium The present application claims priority from chinese patent application CN2026100280429, whose filing date is 2026, 1-9. The present application incorporates the entirety of the above-mentioned chinese patent application. Technical Field The disclosure relates to the technical field of household appliances, in particular to a centrifugal axial flow fan, a guide vane design method thereof, intelligent appliances, equipment and media. Background Centrifugal axial fans are pneumatic devices that combine the characteristics of centrifugal fans and axial fans, and are commonly found in various exhaust devices such as ventilation, air conditioning, cooling towers, industrial exhaust, and the like. The air conditioner can generate relatively large air quantity in a small space, can provide certain air pressure, and can be widely applied. The working principle of the centrifugal axial flow fan is that under the action of a fan impeller, air flow enters the fan from an inlet, enters a diffusion cavity from an air inlet of the centrifugal axial flow fan, and under the action of a guide vane of the diffusion cavity, dynamic pressure of the air flow is converted into static pressure, and finally, the static pressure is axially discharged from an outlet of the centrifugal axial flow fan. However, there are drawbacks to the current vane design inside centrifugal fans, resulting in a centrifugal axial flow fan with a large aerodynamic noise. Disclosure of Invention The technical problem to be solved by the present disclosure is to overcome the defect of the design of the guide vane inside the centrifugal fan in the prior art, and provide a centrifugal axial flow fan, a guide vane design method, an intelligent electrical apparatus, an apparatus and a medium thereof. The technical problems are solved by the following technical scheme: In a first aspect, the present disclosure provides a method for designing a guide vane of a centrifugal axial flow fan, where the guide vane is disposed in a diffusion cavity of the centrifugal axial flow fan, and an air flow enters the diffusion cavity from an air inlet of the centrifugal axial flow fan, the method including: Determining the airflow speed of the airflow in a plurality of dimensions aiming at each partition on the guide vane, wherein the airflow speed in the plurality of dimensions meets airflow constraint, the plurality of dimensions at least comprise radial dimensions, axial dimensions and circumferential dimensions, and the airflow constraint comprises that the duration of the airflow in each dimension is the same when the airflow reaches a target position; Determining the curved surface parameters of each partition according to the curved surface design criterion and the airflow speeds of the multiple dimensions; determining the molded line parameters of each subarea according to molded line design criteria and the airflow speeds of the multiple dimensions; and determining the design result of the guide vane by combining the curved surface parameters and the molded line parameters of each subarea. Optionally, the airflow restriction includes: ; ; Wherein, the For displacement in the radial dimension,For the radius of the target location,For the radius of the air inlet opening,For the gas flow velocity in the radial dimension,For the displacement in the circumferential dimension,For the airflow velocity in the circumferential dimension,For displacement in the axial dimension,For the gas flow velocity in the axial dimension,Is a duration. Optionally, the airflow speed in the radial dimension includes: ; Wherein, the For the gas flow velocity in the radial dimension,R is the radius of the air inlet for the flow rate of the air flow,B is the width of the air inlet; Optionally, the airflow speed in the axial dimension includes: ; Wherein, the For the gas flow velocity in the axial dimension,For displacement in the axial dimension,For the gas flow velocity in the radial dimension,For the radius of the target location,The radius of the air inlet is the radius of the air inlet; Optionally, the airflow speed in the circumferential dimension includes: ; Wherein, the For the air flow velocity in the circumferential dimension,For the rotational angular velocity of the impeller of the centrifugal axial flow fan,For the incoming radius of the air flow,In order to be a slip coefficient,For the radius of each partition near the hub,The radius of each partition near the fan housing is set. Optionally, the curved surface parameter includes an axial distance; the surface design criteria include an axial distance criterion: ; Wherein, the For the axial distance of the partition i,For the gas flow velocity in the axial dimension,For the gas flow velocity in the radial dimension,For the radius of the target location,The radius of the air inlet is the radius of the air inlet;