CN-122015398-A - Air duct control method for three-dimensional air supply and refrigerator

Abstract

The application provides a three-dimensional air supply air duct control method and a refrigerator, and relates to the technical field of refrigerators. The method comprises the steps of obtaining temperature data and air flow data of different preset positions collected by each temperature sensor and each air flow sensor, obtaining air flow distribution and temperature fields in a refrigerating cabin of the refrigerator according to the temperature data and the air flow data, generating fan adjusting instructions by adopting a preset algorithm according to the air flow distribution and the temperature fields in the refrigerating cabin of the refrigerator, controlling the top air outlet system and/or the side air channel system according to the fan adjusting instructions, realizing refined air supply control in the refrigerating cabin of the refrigerator, avoiding the problems of local supercooling and surrounding warm areas, realizing dead angle-free air flow coverage in the whole areas of the top, middle and lower parts of the refrigerating cabin, solving the problems of uneven air flow coverage, temperature dead angles in the top area and poor food preservation effect in the air supply modes of the two sides, and improving the preservation effect of the refrigerator.

Inventors

• Request for anonymity
• GU SHAOLIN
• LIU YIBO

Assignees

• 冰氪纪元智能科技(南京)有限公司

Dates

Publication Date

20260512

Application Date

20260309

Claims (10)

1. 1. The air duct control method for three-dimensional air supply is characterized by being applied to a refrigerator and comprising a top air outlet system, a side air duct system, a plurality of temperature sensors, a plurality of air flow sensors and a main control unit, wherein the main control unit is respectively in communication connection with the top air outlet system, the side air duct system, the temperature sensors and the air flow sensors, the top air outlet system is arranged on a top air duct of a refrigerator refrigerating cabin, the side air duct system is arranged on a back air duct of the refrigerator refrigerating cabin, the top air duct is mutually isolated from the back air duct, and the temperature sensors and the air flow sensors are respectively arranged at preset positions in the refrigerator refrigerating cabin, and the method comprises the following steps of: Acquiring temperature data and air flow data of different preset positions acquired by the temperature sensors and the air flow sensors; acquiring air flow distribution and a temperature field in a refrigerating compartment of the refrigerator according to the temperature data and the air flow data; generating a fan adjusting instruction by adopting a preset algorithm according to the air flow distribution and the temperature field in the refrigerating compartment of the refrigerator, wherein the fan adjusting instruction comprises wind speed and/or wind direction parameters of the top air outlet system and the side air duct system; And controlling the top air outlet system and/or the side air duct system according to the fan adjusting instruction.
2. 2. The method of claim 1, wherein generating fan adjustment instructions using a predetermined algorithm based on the airflow distribution and the temperature field within the refrigerator compartment comprises: Calculating and obtaining temperature uniformity deviation according to the air flow distribution and the temperature field in the refrigerating compartment of the refrigerator; and if the temperature uniformity deviation is larger than a preset threshold value, generating a fan adjusting instruction by adopting a preset algorithm according to the air flow and the temperature distribution in the refrigerating chamber of the refrigerator.
3. 3. The method of claim 1, wherein the acquiring the air flow distribution and the temperature field in the refrigerator compartment based on the temperature data and the air flow data comprises: and simulating to obtain air flow distribution and a temperature field according to a pre-constructed fluid dynamics equation, the temperature data and the air flow data.
4. 4. The method of claim 3, wherein the simulating the airflow profile and the temperature field based on the pre-constructed fluid dynamics equation, the temperature data, and the airflow data further comprises: Discretizing an effective airflow circulation area in a refrigerating cabin of the refrigerator according to structured orthogonal grids with preset sizes to obtain a plurality of grid units.
5. 5. The method of claim 4, wherein the pre-constructed hydrodynamic equations include a continuity equation, a momentum equation, and an energy equation; the simulation of the airflow distribution and the temperature field according to a pre-constructed fluid dynamics equation, the temperature data and the airflow data comprises the following steps: According to the initial temperature of the refrigerator, the current wind speed of the top air outlet system, the current wind speed, temperature data and airflow data of the side air duct system, calculating and obtaining airflow speed flux by adopting the continuity equation, calculating and obtaining airflow speed and direction by adopting the momentum equation, and calculating and obtaining the temperature value of each grid unit by adopting the energy equation; And solving to obtain an airflow distribution numerical matrix and a temperature distribution numerical matrix according to the airflow speed flux, the airflow speed and direction and the temperature value of each grid unit.
6. 6. The method of claim 5, wherein calculating a temperature uniformity deviation based on the air flow distribution and the temperature field in the refrigerator compartment comprises: And acquiring an air flow dead angle area with the air speed smaller than a preset air speed in the refrigerator refrigerating cabin, a full cabin temperature fluctuation difference of the refrigerator refrigerating cabin and a temperature difference between the top of the refrigerator refrigerating cabin and other areas according to the air flow distribution numerical matrix and the temperature distribution numerical matrix.
7. 7. The method of claim 6, wherein generating a fan adjustment command using a preset algorithm based on the air flow and the temperature distribution in the refrigerator compartment if the temperature uniformity deviation is greater than a preset threshold value comprises: When the temperature difference between the top of the refrigerator refrigerating cabin and other areas is larger than a preset threshold value, a fan adjusting instruction is generated by adopting a preset algorithm according to the air flow dead angle area, the whole cabin temperature fluctuation difference of the refrigerator refrigerating cabin, and the temperature difference between the top of the refrigerator refrigerating cabin and other areas, wherein the air speed in the refrigerator refrigerating cabin is smaller than the preset air speed.
8. 8. The method according to claim 1, wherein the method further comprises: After the refrigerator starts a refrigeration mode, starting the top air outlet system to supply air; And after the top air outlet system is started and lasts for a preset time, starting the side air duct system to supply air.
9. 9. The refrigerator is characterized by comprising a top air outlet system, a side air duct system, a plurality of temperature sensors, a plurality of air flow sensors and a main control unit, wherein the main control unit is respectively in communication connection with the top air outlet system, the side air duct system, the temperature sensors and the air flow sensors; the top air outlet system is arranged on a top air channel of the refrigerator refrigerating cabin, the side air channel system is arranged on a back air channel of the refrigerator refrigerating cabin, the top air channel and the back air channel are mutually isolated, and the temperature sensor and the air flow sensor are respectively arranged at preset positions in the refrigerator refrigerating cabin; the main control unit is configured to execute the air duct control method of three-dimensional air supply according to any one of claims 1 to 8.
10. 10. The refrigerator of claim 9, wherein the top air outlet system comprises a stepper motor and an air supply fan, the stepper motor and the air supply fan being respectively in communication with the main control unit; The top air duct is provided with at least one top air outlet, and each top air outlet is provided with an adjustable air deflector.

Description

Air duct control method for three-dimensional air supply and refrigerator Technical Field The application relates to the technical field of refrigerators, in particular to a three-dimensional air supply air duct control method and a refrigerator. Background Along with the rapid development of the household refrigerator to the intelligent and refined temperature control direction, the requirements of users on temperature uniformity, air flow coverage integrity and food fresh-keeping stability in the refrigerating cabin are obviously improved. In the related art, a double-side air supply structure is generally adopted in the current mainstream refrigerator, namely, a plurality of layers of air outlets are arranged on the left side and the right side of an air duct at the back of a refrigerating cabin, cold air is synchronously driven to horizontally jet into the cabin through fans at the two sides, and circulating air flow is formed by means of natural convection and cabin structure guidance. However, in the conventional two-side air supply mode, structural dead zones exist in space coverage, so that the preservation effect of the storage part area is poor. Disclosure of Invention The application aims to provide a three-dimensional air supply air duct control method and a refrigerator aiming at the defects in the prior art so as to solve the technical problems in the prior art. In order to achieve the above purpose, the technical scheme adopted by the embodiment of the application is as follows: In a first aspect, an embodiment of the present application provides a method for controlling an air duct of three-dimensional air supply, which is applied to a refrigerator, where the refrigerator includes a top air outlet system, a side air duct system, a plurality of temperature sensors, a plurality of air flow sensors, and a main control unit, where the main control unit is respectively in communication connection with the top air outlet system, the side air duct system, the temperature sensors, and the air flow sensors, the top air outlet system is disposed in a top air duct of a refrigerator refrigerating compartment, the side air duct system is disposed in a back air duct of the refrigerator refrigerating compartment, the top air duct and the back air duct are isolated from each other, and the temperature sensors and the air flow sensors are disposed in preset positions in the refrigerator refrigerating compartment, and the method includes: Acquiring temperature data and air flow data of different preset positions acquired by the temperature sensors and the air flow sensors; acquiring air flow distribution and a temperature field in a refrigerating compartment of the refrigerator according to the temperature data and the air flow data; generating a fan adjusting instruction by adopting a preset algorithm according to the air flow distribution and the temperature field in the refrigerating compartment of the refrigerator, wherein the fan adjusting instruction comprises wind speed and/or wind direction parameters of the top air outlet system and the side air duct system; And controlling the top air outlet system and/or the side air duct system according to the fan adjusting instruction. Optionally, the generating, by a preset algorithm, a fan adjusting instruction according to the airflow distribution and the temperature field in the refrigerator refrigerating cabin includes: Calculating and obtaining temperature uniformity deviation according to the air flow distribution and the temperature field in the refrigerating compartment of the refrigerator; and if the temperature uniformity deviation is larger than a preset threshold value, generating a fan adjusting instruction by adopting a preset algorithm according to the air flow and the temperature distribution in the refrigerating chamber of the refrigerator. Optionally, the acquiring the air flow distribution and the temperature field in the refrigerator refrigerating cabin according to the temperature data and the air flow data includes: and simulating to obtain air flow distribution and a temperature field according to a pre-constructed fluid dynamics equation, the temperature data and the air flow data. Optionally, before the simulation of the airflow distribution and the temperature field according to the pre-constructed fluid dynamics equation, the temperature data and the airflow data, the method further comprises: Discretizing an effective airflow circulation area in a refrigerating cabin of the refrigerator according to structured orthogonal grids with preset sizes to obtain a plurality of grid units. Optionally, the pre-constructed fluid dynamics equation comprises a continuity equation, a momentum equation and an energy equation; the simulation of the airflow distribution and the temperature field according to a pre-constructed fluid dynamics equation, the temperature data and the airflow data comprises the following steps: According to the initial tem