An intelligent control system for air duct circulation of refrigerator

Abstract

The present invention discloses an intelligent control system for air duct circulation of a refrigerator, comprising a temperature sensor: distributed at an internal position of the refrigerator, and used for collecting temperature data in real time; an intelligent control unit: receiving data from the temperature sensor, analyzing and making decisions through a built-in algorithm, and outputting a control instruction; an execution unit: comprising an air duct regulating valve and a fan controller, and adjusting the flow and temperature of cold air according to the control instruction; a communication module: realizing remote communication with a smart phone or smart device, supporting data uploading and remote control instruction reception; a fault monitoring and alarm unit: monitoring key parameters in real time, triggering an alarm and sending a notification when an abnormality is found; the beneficial effects of the present invention are: significantly improving the uniformity and stability of the temperature inside the refrigerator, and improving the refrigeration effect; reducing energy consumption through intelligent adjustment, and achieving high efficiency and energy saving; enhancing the stability and reliability of the equipment, and reducing the downtime due to faults.

Description

Technical Field

[0001] The invention belongs to the technical field of air duct circulation intelligent control, and in particular relates to an air duct circulation intelligent control system for a refrigerator. Background Art

[0002] Freezer duct circulation refers to the circulation of cold air through the air duct inside the freezer to achieve uniform distribution and maintenance of the temperature in the refrigerator chamber; this circulation process is crucial to the refrigeration effect and energy efficiency of the freezer.

[0003] The air duct circulation of the freezer usually consists of four main parts: compressor, condenser, expansion valve and evaporator. The evaporator is the refrigerator inside the freezer, which generates cold air through the principle of evaporative cooling. The cold air is evenly blown into the cold storage room through the air duct, so as to achieve uniform temperature distribution of the refrigerated items. This process ensures that the refrigerated items can be kept within a stable temperature range, avoiding the situation where the temperature is too high or too low in some places.

[0004] The patent discloses a method and device for controlling a refrigerator, a refrigerator, and a storage medium with publication number CN115523714A. The refrigerator includes a refrigeration cycle system, and the refrigeration cycle system includes a first evaporator and a second evaporator located in an evaporator bin, and the first evaporator and the second evaporator respectively cool different areas in the refrigerator through corresponding air ducts; the method includes: when the current first internal temperature of the refrigerator is greater than the set temperature, starting the first evaporator or the second evaporator for cooling in turn; detecting the second internal temperature of the refrigerator after a set time; and when the second internal temperature is greater than the set temperature, starting the first evaporator and the second evaporator.

[0005] In the prior art, although the patent with publication number CN115523714A proposes a method of cooling different areas through dual evaporators and corresponding air ducts, it still relies on a preset refrigeration strategy and fails to achieve intelligent regulation based on real-time temperature distribution. Summary of the invention

[0006] The object of the present invention is to provide an intelligent control system for air duct circulation of a refrigerator, which can monitor the temperature distribution inside the refrigerator in real time and intelligently adjust the cold air flow and temperature of the air duct according to the monitoring results.

[0007] To achieve the above object, the present invention provides the following technical solution: an intelligent control system for air duct circulation of a refrigerator, comprising:

[0008] Temperature sensor: distributed inside the refrigerator, used to collect temperature data in real time;

[0009] Intelligent control unit: receives data from temperature sensors, analyzes and makes decisions through built-in algorithms, and outputs control instructions;

[0010] Execution unit: including air duct regulating valve and fan controller, adjusting the cold air flow and temperature according to the control instructions;

[0011] Communication module: realize remote communication with smart phones or smart devices, support data uploading and remote control command reception;

[0012] Fault monitoring and alarm unit: monitors key parameters in real time, triggers alarms and sends notifications when abnormalities are found.

[0013] As a preferred technical solution of the present invention, the data of the temperature sensor is received, analyzed and decided by the built-in algorithm, and the control instruction is output. The corresponding method is as follows:

[0014] The intelligent control unit first receives data from the temperature sensor through the interface;

[0015] The received raw data needs to be preprocessed to improve the accuracy and reliability of the data;

[0016] The intelligent control unit has multiple built-in control algorithms;

[0017] Using the selected control algorithm, the intelligent control unit conducts in-depth analysis of the pre-processed temperature data;

[0018] Based on the results of data analysis, the intelligent control unit formulates corresponding control strategies;

[0019] Based on the decision results, the intelligent control unit generates specific control instructions;

[0020] The generated control instructions are output to the corresponding execution units through the communication interface.

[0021] As a preferred technical solution of the present invention, the preprocessing includes filtering and denoising.

[0022] As a preferred technical solution of the present invention, the control algorithm includes fuzzy control, neural network, and PID control.

[0023] As a preferred technical solution of the present invention, the in-depth analysis includes calculating the difference between the current temperature and the set temperature and predicting the future temperature change trend.

[0024] As a preferred technical solution of the present invention, the adjustment of the air duct regulating valve corresponds to the following:

[0025] The air duct regulating valve receives control instructions from the intelligent control unit; according to the received control instructions, the actuator inside the air duct regulating valve drives the valve blade to rotate or move; the rotation or movement of the valve blade changes the cross-sectional area of ​​the air duct, thereby adjusting the air flow through the air duct;

[0026] If the control instruction requires an increase in air flow, the valve blade will open a larger angle to increase the cross-sectional area of ​​the air duct; conversely, if the air flow is required to decrease, the valve blade will close a corresponding angle to reduce the cross-sectional area of ​​the air duct.

[0027] As a preferred technical solution of the present invention, the adjustment corresponding content of the fan controller is as follows:

[0028] The fan controller receives control instructions from the intelligent control unit;

[0029] According to the received control command, the fan controller adjusts the speed of the fan;

[0030] The fan speed is adjusted by changing the voltage or current supplied to the fan;

[0031] If the control instruction requires the fan speed to be increased, the fan controller increases the output voltage or current to make the fan rotate faster; conversely, if the fan speed is required to be slowed down, the fan controller reduces the output voltage or current to make the fan rotate slower.

[0032] As a preferred technical solution of the present invention, the fan controller includes a power regulation circuit therein for adjusting the output voltage or current according to instructions.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] Significantly improve the uniformity and stability of the temperature inside the refrigerator and enhance the refrigeration effect;

[0035] Reduce energy consumption through intelligent regulation to achieve high efficiency and energy saving;

[0036] Enhance the stability and reliability of equipment and reduce downtime;

[0037] Provide remote intelligent control function to improve user experience and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a system principle diagram of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1

[0041] See also Figure 1 , which is the first embodiment of the present invention, and provides an intelligent control system for air duct circulation of a refrigerator, comprising:

[0042] Temperature sensor: distributed inside the refrigerator, used to collect temperature data in real time;

[0043] Intelligent control unit: receives data from temperature sensors, analyzes and makes decisions through built-in algorithms, and outputs control instructions;

[0044] Execution unit: including air duct regulating valve and fan controller, adjusting the cold air flow and temperature according to the control instructions;

[0045] Communication module: realize remote communication with smart phones or smart devices, support data uploading and remote control command reception;

[0046] Fault monitoring and alarm unit: monitors key parameters in real time, triggers alarms and sends notifications when abnormalities are found.

[0047] In this embodiment, preferably, the data of the temperature sensor is received, analyzed and decided by the built-in algorithm, and the control instruction is output. The corresponding method is as follows:

[0048] The intelligent control unit first receives data from the temperature sensor through an interface; these sensors are usually placed in the environment where the temperature needs to be monitored, and can sense and convert temperature information into electrical signals in real time;

[0049] The received raw data needs to be pre-processed, such as filtering and denoising, to improve the accuracy and reliability of the data; in addition, if the sensor outputs an analog signal, it needs to be converted into a digital signal through an A / D converter for subsequent processing;

[0050] The intelligent control unit has built-in multiple control algorithms, such as fuzzy control, neural network, PID control, etc. The selection of these algorithms depends on the requirements of specific application scenarios, such as accuracy requirements, response speed, system stability, etc.

[0051] Using the selected control algorithm, the intelligent control unit conducts in-depth analysis of the pre-processed temperature data, including calculating the difference between the current temperature and the set temperature, predicting future temperature change trends, etc.

[0052] Based on the results of data analysis, the intelligent control unit will develop a corresponding control strategy; for example, when it detects that the current temperature is higher than the set temperature, the control unit may decide to start the refrigeration equipment;

[0053] Based on the decision results, the intelligent control unit will generate specific control instructions; these instructions include the switch status of the equipment, power adjustment, etc.

[0054] Instruction output: The generated control instructions are output to the corresponding execution unit through the communication interface (such as RS485, Wi-Fi, Bluetooth, etc.).

[0055] In this embodiment, preferably, the adjustment of the air duct regulating valve corresponds to the following:

[0056] The air duct regulating valve receives control instructions from the intelligent control unit; according to the received control instructions, the actuator inside the air duct regulating valve drives the valve blade to rotate or move; the rotation or movement of the valve blade changes the cross-sectional area of ​​the air duct, thereby adjusting the air flow through the air duct;

[0057] If the control instruction requires an increase in air flow, the valve blade will open a larger angle to increase the cross-sectional area of ​​the air duct; conversely, if the air flow is required to decrease, the valve blade will close a corresponding angle to reduce the cross-sectional area of ​​the air duct.

[0058] In this embodiment, preferably, the adjustment corresponding content of the fan controller is as follows:

[0059] The fan controller receives control instructions from the intelligent control unit;

[0060] According to the received control command, the fan controller adjusts the speed of the fan;

[0061] The fan speed is adjusted by changing the voltage or current supplied to the fan;

[0062] If the control instruction requires the fan speed to be increased, the fan controller increases the output voltage or current to make the fan rotate faster; conversely, if the fan speed is required to be slowed down, the fan controller reduces the output voltage or current to make the fan rotate slower.

[0063] In this embodiment, preferably, the fan controller internally includes a power regulation circuit for adjusting the output voltage or current according to instructions.

[0064] Example 2

[0065] See also Figure 1, which is the second embodiment of the present invention, is based on the previous embodiment, except that:

[0066] Fault monitoring and alarm unit: monitors key parameters in real time, triggers alarms and sends notifications when abnormalities are found. The implementation method is as follows:

[0067] Determine monitoring parameters:

[0068] Determine the key parameters that need to be monitored based on the characteristics and requirements of the system or equipment;

[0069] Install sensors at corresponding locations of the system or equipment to collect data of key parameters in real time; the selection of sensors should be determined according to the type and accuracy requirements of the monitoring parameters;

[0070] The data collected by the sensors are transmitted to the central processing unit via wired or wireless means;

[0071] The central processing unit processes and analyzes the received data to determine whether there are any abnormalities;

[0072] To set the alarm threshold:

[0073] According to the normal operating range and fault judgment criteria of the system or equipment, set the corresponding alarm thresholds; when the monitoring parameters exceed these thresholds, an alarm will be triggered;

[0074] Alarm and notification:

[0075] When the monitoring parameters exceed the alarm threshold, the fault monitoring and alarm unit will trigger an alarm signal and send the alarm information to relevant personnel through a preset notification method (such as sound and light alarm, text message, email, etc.).

[0076] Although the embodiments of the present invention have been shown and described, as detailed above, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent control system for air duct circulation of a refrigerator, characterized in that: include Temperature sensor: distributed inside the refrigerator, used to collect temperature data in real time; Intelligent control unit: receives data from temperature sensors, analyzes and makes decisions through built-in algorithms, and outputs control instructions; Execution unit: including air duct regulating valve and fan controller, adjusting the cold air flow and temperature according to the control instructions; Communication module: realize remote communication with smart phones or smart devices, support data uploading and remote control command reception; Fault monitoring and alarm unit: monitors key parameters in real time, triggers alarms and sends notifications when abnormalities are found.

2. The intelligent control system for air duct circulation of a refrigerator according to claim 1, characterized in that: Receive data from the temperature sensor, analyze and make decisions through the built-in algorithm, and output control instructions. The corresponding methods are as follows: The intelligent control unit first receives data from the temperature sensor through the interface; The received raw data needs to be preprocessed to improve the accuracy and reliability of the data; The intelligent control unit has multiple built-in control algorithms; Using the selected control algorithm, the intelligent control unit conducts in-depth analysis of the pre-processed temperature data; Based on the results of data analysis, the intelligent control unit formulates corresponding control strategies; Based on the decision results, the intelligent control unit generates specific control instructions; The generated control instructions are output to the corresponding execution units through the communication interface.

3. The intelligent control system for air duct circulation of a refrigerator according to claim 2, characterized in that: The preprocessing includes filtering and denoising.

4. The intelligent control system for air duct circulation of a refrigerator according to claim 2, characterized in that: The control algorithms include fuzzy control, neural network, and PID control.

5. The intelligent control system for air duct circulation of a refrigerator according to claim 2, characterized in that: The in-depth analysis includes calculating the difference between the current temperature and the set temperature and predicting the future temperature change trend.

6. The intelligent control system for air duct circulation of a refrigerator according to claim 1, characterized in that: The adjustment of the air duct regulating valve corresponds to the following: The air duct regulating valve receives control instructions from the intelligent control unit; according to the received control instructions, the actuator inside the air duct regulating valve drives the valve blade to rotate or move; the rotation or movement of the valve blade changes the cross-sectional area of ​​the air duct, thereby adjusting the air flow through the air duct; If the control instruction requires an increase in air flow, the valve blade will open a larger angle to increase the cross-sectional area of ​​the air duct; conversely, if the air flow is required to decrease, the valve blade will close a corresponding angle to reduce the cross-sectional area of ​​the air duct.

7. The intelligent control system for air duct circulation of a refrigerator according to claim 1, characterized in that: The adjustment corresponding contents of the fan controller are as follows: The fan controller receives control instructions from the intelligent control unit; According to the received control command, the fan controller adjusts the speed of the fan; The fan speed is adjusted by changing the voltage or current supplied to the fan; If the control instruction requires the fan speed to be increased, the fan controller increases the output voltage or current to make the fan rotate quickly; conversely, if the fan speed is required to be slowed down, the fan controller reduces the output voltage or current to make the fan rotate slowly.

8. The intelligent control system for air duct circulation of a refrigerator according to claim 7, characterized in that: The fan controller includes a power regulating circuit therein, which is used to adjust the output voltage or current according to instructions.

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