Intermediate heat dissipation type electric infrared radiation plate with double-face radiation function

Abstract

The application relates to the technical field of electric infrared radiation plates, and discloses a middle heat dissipation type electric infrared radiation plate with double-sided radiation functions, which comprises a heating module, a heat dissipation module, an infrared radiation module and a control module; wherein: the heating module generates heat after being electrified; the heat dissipation module comprises first and second heat dissipation fins and is used for uniformly conducting the heat generated by the heating module to the infrared radiation module; the infrared radiation module comprises first and second radiation surfaces and is used for releasing heat in the form of infrared radiation; the control module is used for identifying a radiation load state and generating a power supply control strategy based on the radiation load state; and the heating module adjusts the power supply power in real time based on the power supply control strategy. Through the double-sided radiation structure design and heat distribution optimization control, the application can realize uniform heating and stable temperature control under complex working conditions.

Description

Technical Field

[0001] This application relates to the technical field of electric infrared radiating plates, specifically to an electric infrared radiating plate with a middle heat dissipation function and double-sided radiation function. Background Technology

[0002] Electro-infrared radiant panels have application value in industrial heating, double-sided baking, directional radiant heating, and localized heat treatment. Existing technologies are mostly based on fixed power output or simple closed-loop control, which have limited responsiveness to environmental and load changes. For example, when the contact state of the heated object changes, or when external airflow or convection conditions fluctuate, the system often struggles to identify these changes accurately and promptly, and make appropriate adjustments. In such cases, localized overheating, insufficient heating, or energy waste can easily occur, thus reducing the overall system's energy efficiency. Under complex operating conditions, such as partial obstruction or periodic disturbances, existing technologies struggle to achieve precise energy regulation and lack the ability to track and respond to load heat demands, making it difficult to guarantee heating efficiency and temperature stability in some scenarios.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] The technical problem to be solved by this application is to overcome the defects of the prior art and provide a middle heat dissipation electric infrared radiation plate with double-sided radiation function. Through the double-sided radiation structure design and heat distribution optimization control, uniform heating and stable temperature control under complex working conditions can be achieved.

[0005] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0006] An electric infrared radiating plate with dual-sided radiation function and intermediate heat dissipation includes a heating module, a heat dissipation module, and an infrared radiation module; wherein:

[0007] The heating module includes a power supply unit, a first heating unit, and a second heating unit; wherein, the power supply unit is electrically connected to both the first heating unit and the second heating unit to provide electrical energy; the first heating unit and the second heating unit generate heat after being powered on.

[0008] The heat dissipation module includes a first heat sink and a second heat sink, which are used to evenly conduct the heat generated by the heating module to the infrared radiation module;

[0009] The infrared radiation module includes a first radiation surface and a second radiation surface, used to release heat in the form of infrared radiation;

[0010] The intermediate heat dissipation electric infrared radiation plate with dual-sided radiation function also includes a control module; the control module is used to identify the radiation load status and generate a power supply control strategy based on the radiation load status; the power supply unit adjusts the power supply power in real time based on the power supply control strategy.

[0011] As a preferred embodiment of the intermediate heat dissipation electric infrared radiation plate with double-sided radiation function described in this application, the control module includes a temperature detection unit, a status recognition unit, and a control strategy unit.

[0012] The temperature detection unit includes temperature sensors installed at the first and second radiating surfaces; the temperature detection unit detects the first radiating temperature and the second radiating temperature based on a fixed detection cycle; the first radiating temperature is the temperature of the first radiating surface; the second radiating temperature is the temperature of the second radiating surface.

[0013] The state recognition unit identifies the radiation load state based on the first radiation temperature and the second radiation temperature; the radiation load state includes dynamic load state, convective disturbance state, and unilateral load state.

[0014] As a preferred embodiment of the intermediate heat dissipation electro-infrared radiating plate with double-sided radiation function described in this application, the status recognition unit is used to identify the radiation load status, specifically including:

[0015] Set an identification period; the identification period includes the latest n consecutive detection periods, where n is a positive integer;

[0016] For any identification cycle, calculate the first temperature rise rate and the second temperature rise rate for each detection cycle; wherein, the first temperature rise rate for any detection cycle is the rate of change of the first radiation temperature in that detection cycle, and the second temperature rise rate is the rate of change of the second radiation temperature in that detection cycle.

[0017] Based on the first and second temperature rise rates of each detection cycle, the response mutation amount of the identification cycle is calculated, and whether a load mutation occurs in each detection cycle is identified respectively.

[0018] If the response mutation amount is greater than the preset response mutation threshold, or if a load mutation occurs in at least one detection cycle during the identification cycle, then the radiation load state is a dynamic load state.

[0019] As a preferred embodiment of the intermediate heat dissipation electro-infrared radiating plate with double-sided radiation function described in this application, wherein: the calculation of the response mutation amount of the recognition period specifically includes:

[0020] For any detection cycle within the identification cycle, calculate the first response mutation amount and the second response mutation amount, and record the larger of the first response mutation amount and the second response mutation amount as the response mutation amount of the detection cycle;

[0021] The first response mutation amount in any detection cycle is the absolute value of the difference between the first temperature rise rate of the detection cycle and the first temperature rise rate of the adjacent previous detection cycle; the second response mutation amount in any detection cycle is the absolute value of the difference between the second temperature rise rate of the detection cycle and the second temperature rise rate of the adjacent previous detection cycle.

[0022] The maximum value of the response mutation amount across all detection cycles within the identification period is taken as the response mutation amount for the identification period.

[0023] As a preferred embodiment of the intermediate heat dissipation electro-infrared radiating plate with double-sided radiation function described in this application, wherein: identifying whether a load change occurs in any detection cycle includes:

[0024] Calculate the difference between the first and second temperature rise rates for any given detection cycle, and use this as the response difference for the corresponding detection cycle.

[0025] Mark any detection period as the target period; let the response difference of the target period be R0, and the response difference of the previous detection period adjacent to the target period be R1;

[0026] If the absolute values ​​of R0 and R1 are both greater than the preset response difference threshold, and the positive and negative signs of R0 and R1 are opposite, then a load mutation occurs in the target cycle.

[0027] As a preferred embodiment of the intermediate heat dissipation electro-infrared radiating plate with double-sided radiation function described in this application, the status recognition unit is used to identify the radiation load status, and further includes:

[0028] If the radiation load state is not determined to be a dynamic load state, then calculate the temperature fluctuation amplitude for each detection cycle in the identification cycle.

[0029] Any detection period in which the absolute value of the response difference is greater than the response difference threshold is marked as an imbalanced period; the ratio of the number of imbalanced periods to the total number of detection periods in the identification period is calculated and denoted as the imbalance ratio.

[0030] If the imbalance ratio is greater than a preset first ratio threshold, the radiation load state is a unilateral load state; otherwise, if the imbalance ratio is less than a preset second ratio threshold, and there is at least one detection cycle in the identification cycle where the temperature fluctuation amplitude is greater than a preset temperature fluctuation threshold, the radiation load state is a convective disturbance state.

[0031] As a preferred embodiment of the double-sided radiation-function intermediate heat dissipation electro-infrared radiating plate described in this application, the method for calculating the temperature fluctuation amplitude for any detection cycle includes: calculating the difference between the first radiation temperature of the corresponding detection cycle and the first radiation temperature of the adjacent previous detection cycle and taking the absolute value as the first fluctuation amplitude; calculating the difference between the second radiation temperature of the corresponding detection cycle and the second radiation temperature of the adjacent previous detection cycle and taking the absolute value as the second fluctuation amplitude; and taking the larger of the first fluctuation amplitude and the second fluctuation amplitude as the temperature fluctuation amplitude of the corresponding detection cycle.

[0032] As a preferred embodiment of the intermediate heat dissipation electro-infrared radiating plate with double-sided radiation function described in this application, wherein: the control strategy unit generates a power supply control strategy based on the radiation load state, including: if the radiation load state is a convective disturbance state, then the power supply control strategy specifically includes:

[0033] Obtain the target radiation temperature; set a continuous first control cycle; in any first control cycle, calculate the average of the first radiation temperature and the second radiation temperature as the real-time radiation temperature; calculate the difference between the target radiation temperature and the real-time radiation temperature, and record it as the target temperature difference;

[0034] In any first control cycle, the power supply of the power supply unit is obtained; the adjustment amount of the power supply is calculated based on the first PID controller; the power supply of the power supply unit is adjusted based on the adjustment amount of the power supply; the input error of the first PID controller is the target temperature difference for the corresponding control cycle.

[0035] As a preferred embodiment of the intermediate heat dissipation electro-infrared radiating plate with dual-sided radiation function described in this application, wherein: the control strategy unit generates a power supply control strategy based on the radiation load state, and further includes: if the radiation load state is a single-sided load state, then the power supply control strategy specifically includes:

[0036] Set a continuous second control cycle; any second control cycle contains m consecutive detection cycles; m is a positive integer;

[0037] In any second control cycle, the bi-sided temperature difference of each detection cycle is calculated and the average value is taken as the bi-sided temperature difference of the second control cycle; the bi-sided temperature difference of any detection cycle is the difference between the corresponding first radiation temperature and the second radiation temperature or the difference between the second radiation temperature and the first radiation temperature.

[0038] Obtain the target two-sided temperature difference; in any control cycle, obtain the power allocation ratio of the power supply unit;

[0039] The adjustment amount of the power distribution ratio is calculated based on the second PID controller; the power distribution ratio of the power supply unit is adjusted based on the adjustment amount of the power distribution ratio; the input error of the second PID controller is the target double-sided temperature difference minus the double-sided temperature difference corresponding to the second control cycle.

[0040] As a preferred embodiment of the intermediate heat dissipation electro-infrared radiating plate with double-sided radiation function described in this application, wherein: the control strategy unit generates a power supply control strategy based on the radiation load state, and further includes: if the radiation load state is a dynamic load state, then the power supply control strategy specifically includes:

[0041] Simultaneously, the first control cycle and the second control cycle are set; in any first control cycle, the adjustment amount of the power supply is calculated based on the first PID controller, and the power supply power of the power supply unit is adjusted;

[0042] During any second control cycle, it is determined whether a load deviation trend occurs; if a load deviation trend occurs, the adjustment amount of the power allocation ratio is calculated based on the second PID controller, and the power allocation ratio of the power supply unit is adjusted.

[0043] As a preferred embodiment of the intermediate heat dissipation electro-infrared radiating plate with double-sided radiation function described in this application, wherein: in any second control cycle, determining whether a load deviation trend occurs specifically includes: calculating the response difference value of each detection cycle in the second control cycle; marking any detection cycle in which the response difference value is greater than the response difference threshold as a first deviation cycle; and marking any detection cycle in which the response difference value is less than the response difference threshold multiplied by -1 as a second deviation cycle;

[0044] The ratio of the number of first deviation cycles to the total number of detection cycles in the second control cycle is denoted as the first deviation ratio; the ratio of the number of second deviation cycles to the total number of detection cycles in the second control cycle is denoted as the second deviation ratio.

[0045] If either the first deviation ratio or the second deviation ratio is greater than the preset deviation ratio threshold, a load deviation trend will occur.

[0046] As a preferred embodiment of the intermediate heat dissipation electric infrared radiation plate with double-sided radiation function described in this application, the intermediate heat dissipation electric infrared radiation plate with double-sided radiation function further includes a housing and a fixing component; wherein, the housing is used to encapsulate and fix the heat dissipation module and the infrared radiation module; and the fixing component is used to support and fix the heating module.

[0047] Compared with the prior art, the beneficial effects achieved by this application are as follows:

[0048] This application utilizes a symmetrically arranged dual-radiation surface structure, enabling a single device to simultaneously radiate heat in two directions. In scenarios involving dual-sided heating or limited space, this reduces the number of devices and the complexity of their arrangement, while increasing the heat output capacity per unit volume, thereby improving overall space utilization efficiency and system integration.

[0049] Under different load conditions, the energy distribution can be adjusted according to the difference in heat demand on both sides, so that the system can maintain a reasonable heat output structure under conditions such as high load on one side or unbalanced operation on both sides, avoid energy waste or local insufficient heating, and improve the overall energy efficiency level. Attached Figure Description

[0050] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0051] Figure 1 A schematic diagram of the cross-sectional structure of a middle heat dissipation electric infrared radiating plate with double-sided radiation function provided in this application;

[0052] Figure 2 This application provides a functional schematic diagram of a mid-mounted heat dissipation electric infrared radiation plate with double-sided radiation function.

[0053] Explanation of reference numerals in the attached drawings: 1. Power supply unit; 11. First heating unit; 12. Second heating unit; 21. First heat sink; 22. Second heat sink; 31. First radiating surface; 32. Second radiating surface; 4. Housing; 5. Fixing component. Detailed Implementation

[0054] The technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of this application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0055] This embodiment describes a mid-center heat dissipation type electric infrared radiating plate with double-sided radiation function, referring to... Figure 1 The electric infrared radiation panel includes a heating module, a heat dissipation module, and an infrared radiation module; wherein:

[0056] The heating module includes a power supply unit 1, a first heating unit 11, and a second heating unit 12; wherein, the power supply unit 1 is electrically connected to the first heating unit 11 and the second heating unit 12 respectively, and is used to provide electrical energy; the first heating unit 11 and the second heating unit 12 generate heat after being powered on;

[0057] The heating module is the core component that provides the heat source. The power supply unit 1 can independently control the power supplied to the first heating unit 11 and the second heating unit 12 on both sides; both the first heating unit 11 and the second heating unit 12 are equipped with heating components such as electric heating tubes, which convert electrical energy into heat energy after being powered on, providing heat to the infrared radiation module.

[0058] The heat dissipation module includes a first heat sink 21 and a second heat sink 22, which are used to uniformly conduct the heat generated by the heating module to the infrared radiation module;

[0059] The first heat sink 21 and the second heat sink 22 are symmetrically distributed and both are made of metal thermally conductive materials, such as aluminum alloy and copper alloy. The first heat sink 21 is in close contact with the heating tube of the first heating unit 11 to evenly spread the heat generated by the heating tube and form a planar heat source to improve the uniformity and coverage area of ​​subsequent heat radiation. The second heat sink 22 is in close contact with the heating tube of the second heating unit 12. At the interface between the first heat sink 21 and the second heat sink 22 and the corresponding heating tube, thermally conductive silicone grease or thermally conductive pads are filled to increase the contact area and avoid unstable heat transfer due to local gaps, assembly tolerances or uneven surfaces, thus ensuring heat conduction efficiency.

[0060] The infrared radiation module includes a first radiation surface 31 and a second radiation surface 32, which are used to release heat in the form of infrared radiation.

[0061] Both the first radiating surface 31 and the second radiating surface 32 include an infrared coating; the first radiating surface 31 is used to radiate the heat conducted by the first heat sink 21 outward in the form of far-infrared rays to heat the surrounding environment or objects; the second radiating surface 32 is used to radiate the heat conducted by the second heat sink 22; the first radiating surface 31 and the second radiating surface 32 form a set of symmetrical radiating surfaces, which can cover the radiation space in two directions at the same time.

[0062] The intermediate heat dissipation electric infrared radiating plate with dual-sided radiation function provided in this application can simultaneously supply heat to two radiating surfaces and dynamically distribute the heating power according to the load difference between the two radiating surfaces. It is suitable for dual-sided heating and asymmetric heating conditions. It can also achieve fine temperature regulation and directional heating through power supply control strategies.

[0063] The intermediate heat dissipation electric infrared radiation plate with double-sided radiation function also includes a housing 4 and a fixing component 5; wherein, the housing 4 is used to encapsulate and fix the heat dissipation module and the infrared radiation module; the fixing component 5 is used to support and fix the heating module.

[0064] The overall encapsulation of the housing 4 defines the spatial relationship between the components and, to a certain extent, suppresses heat loss in the target direction of the non-radiative surface. The fixing component 5 ensures that the heating module maintains a stable spatial position within the housing 4 and maintains the relative distance between it and the heat dissipation modules on both sides, ensuring the stability of heat transfer to both sides; optionally, the fixing component 5 can be designed as a hollow structure to assist the power supply unit 1 in wiring and facilitate external power supply connection.

[0065] Reference Figure 2 The intermediate heat dissipation electric infrared radiation plate with dual-sided radiation function also includes a control module; the control module is used to identify the radiation load state and generate a power supply control strategy based on the radiation load state; the power supply unit 1 adjusts the power supply power in real time based on the power supply control strategy.

[0066] The control module includes a temperature detection unit, a status recognition unit, and a control strategy unit.

[0067] The temperature detection unit includes temperature sensors installed on the first radiation surface 31 and the second radiation surface 32; the temperature detection unit detects the first radiation temperature and the second radiation temperature based on a fixed detection cycle; the first radiation temperature is the temperature of the first radiation surface 31; the second radiation temperature is the temperature of the second radiation surface 32.

[0068] Optionally, the detection period is set to 1 second to maintain detection sensitivity while avoiding amplification of sensing noise.

[0069] The state recognition unit identifies the radiation load state based on the first radiation temperature and the second radiation temperature; the radiation load state includes dynamic load state, convective disturbance state, and unilateral load state.

[0070] The status identification unit is used to identify the status of the radiation load, specifically including:

[0071] Set an identification period; the identification period includes the latest n consecutive detection periods, where n is a positive integer;

[0072] Optionally, n can be set to 15, indicating that the recognition period is 15 seconds, so as to cover multiple detection periods, facilitate the extraction of features of the two-sided thermal response, and take into account both the accuracy and sensitivity of radiation load state recognition.

[0073] For any identification cycle, calculate the first temperature rise rate and the second temperature rise rate for each detection cycle; wherein, the first temperature rise rate for any detection cycle is the rate of change of the first radiation temperature in that detection cycle, and the second temperature rise rate is the rate of change of the second radiation temperature in that detection cycle.

[0074] Optionally, the first temperature rise rate and the second temperature rise rate of any detection cycle are calculated as follows: calculate the difference between the first radiation temperature of the detection cycle and the first radiation temperature of the adjacent previous detection cycle, and divide it by the length of a single detection cycle to obtain the first temperature rise rate; calculate the difference between the second radiation temperature of the detection cycle and the second radiation temperature of the adjacent previous detection cycle, and divide it by the length of a single detection cycle to obtain the second temperature rise rate.

[0075] Based on the first and second temperature rise rates of each detection cycle, the response mutation amount of the identification cycle is calculated, and whether a load mutation occurs in each detection cycle is identified respectively.

[0076] If the response mutation amount is greater than the preset response mutation threshold, or if a load mutation occurs in at least one detection cycle during the identification cycle, then the radiation load state is a dynamic load state.

[0077] The calculation of the response mutation amount during the identification period specifically includes:

[0078] For any detection cycle within the identification cycle, calculate the first response mutation amount and the second response mutation amount, and record the larger of the first response mutation amount and the second response mutation amount as the response mutation amount of the detection cycle;

[0079] The first response mutation amount in any detection cycle is the absolute value of the difference between the first temperature rise rate of the detection cycle and the first temperature rise rate of the adjacent previous detection cycle; the second response mutation amount in any detection cycle is the absolute value of the difference between the second temperature rise rate of the detection cycle and the second temperature rise rate of the adjacent previous detection cycle.

[0080] The maximum value of the response mutation amount across all detection cycles within the identification period is taken as the response mutation amount for the identification period.

[0081] Identify whether a load mutation occurs in any detection cycle, including:

[0082] Calculate the difference between the first and second temperature rise rates for any given detection cycle, and use this as the response difference for the corresponding detection cycle.

[0083] Mark any detection period as the target period; let the response difference of the target period be R0, and the response difference of the previous detection period adjacent to the target period be R1;

[0084] If the absolute values ​​of R0 and R1 are both greater than the preset response difference threshold, and the positive and negative signs of R0 and R1 are opposite, then a load mutation occurs in the target cycle.

[0085] Those skilled in the art can set specific values ​​for the response mutation threshold and response difference threshold based on experience. For example, the response mutation amount for each identification cycle can be statistically analyzed and the average value calculated as a reference benchmark. Setting the response mutation threshold to twice the reference benchmark can make the response mutation threshold significantly higher than general thermal inertia fluctuations and measurement disturbances, and avoid missing real dynamic mutations in load switching. The response difference for each detection cycle can be statistically analyzed and the average value calculated as a reference response difference. Setting the response difference threshold to 1.5 times the reference response difference can avoid misjudging the inconsistent rate of temperature change between the two radiating surfaces caused by small noise as a change in load state.

[0086] When the response mutation amount is greater than the preset response mutation threshold, it indicates that the temperature change rate of at least one radiating surface has changed significantly; when a load mutation occurs in any detection cycle, it indicates that the relative rate of temperature change of the two radiating surfaces has reversed; both situations can characterize that the current heated load is undergoing dynamic changes, such as dynamic disturbances such as changes in load contact, detachment, or shielding conditions.

[0087] The status identification unit is used to identify the radiation load status and also includes:

[0088] If the radiation load state is not determined to be a dynamic load state, then calculate the temperature fluctuation amplitude for each detection cycle in the identification cycle.

[0089] Any detection period in which the absolute value of the response difference is greater than the response difference threshold is marked as an imbalanced period; the ratio of the number of imbalanced periods to the total number of detection periods in the identification period is calculated and denoted as the imbalance ratio.

[0090] If the imbalance ratio is greater than a preset first ratio threshold, the radiation load state is a unilateral load state; otherwise, if the imbalance ratio is less than a preset second ratio threshold, and there is at least one detection cycle in the identification cycle where the temperature fluctuation amplitude is greater than a preset temperature fluctuation threshold, the radiation load state is a convective disturbance state.

[0091] For any detection cycle, the method for calculating the temperature fluctuation amplitude includes: calculating the difference between the first radiation temperature of the corresponding detection cycle and the first radiation temperature of the adjacent previous detection cycle and taking the absolute value as the first fluctuation amplitude; calculating the difference between the second radiation temperature of the corresponding detection cycle and the second radiation temperature of the adjacent previous detection cycle and taking the absolute value as the second fluctuation amplitude; and taking the larger of the first fluctuation amplitude and the second fluctuation amplitude as the temperature fluctuation amplitude of the corresponding detection cycle.

[0092] Those skilled in the art can set specific values ​​for the first proportional threshold, the second proportional threshold, and the temperature fluctuation threshold based on actual needs. For example, the temperature fluctuation amplitude of each detection cycle can be statistically analyzed and the average value calculated as a reference value for the temperature fluctuation amplitude; the temperature fluctuation threshold can be set to 1.5 times the reference value to identify significant instantaneous temperature jumps caused by strong convective disturbances or external airflow interference, and to filter temperature fluctuations caused by thermal inertia changes and measurement noise under normal operating conditions. Optionally, the first proportional threshold can be set to 0.7, and the second proportional threshold can be set to 0.3. When the imbalance ratio is greater than 0.7, it indicates that the temperature response of the two radiant surfaces is significantly inconsistent in most detection cycles, that is, the load corresponding to the two radiant surfaces is unbalanced for a long time, corresponding to a working condition dominated by single-sided heating. When the imbalance ratio is less than 0.3, it can be considered that the inconsistent temperature response of the two radiant surfaces has not formed a general trend. If a situation with excessively large temperature fluctuation amplitude is detected at the same time, it indicates that one or both radiant surfaces are affected by local air disturbances such as airflow and wind, and heat is quickly carried away.

[0093] The control strategy unit generates a power supply control strategy based on the radiated load state, including: if the radiated load state is a convective disturbance state, then the power supply control strategy specifically includes:

[0094] Obtain the target radiation temperature; set a continuous first control cycle; in any first control cycle, calculate the average of the first radiation temperature and the second radiation temperature as the real-time radiation temperature; calculate the difference between the target radiation temperature and the real-time radiation temperature, and record it as the target temperature difference;

[0095] In any first control cycle, the power supply of power supply unit 1 is obtained; the adjustment amount of power supply is calculated based on the first PID controller; the power supply of power supply unit 1 is adjusted based on the adjustment amount of power supply; the input error of the first PID controller is the target temperature difference of the corresponding control cycle.

[0096] The target radiation temperature is the target temperature of the first radiation surface 31 and the second radiation surface 32 when the electric infrared radiation plate is actually working, such as any temperature value between 200°C and 300°C; optionally, the first control cycle is set to 1 second, with the same length as the detection cycle, and a single first control cycle contains a sample value of the first radiation temperature and a sample value of the second radiation temperature; the first control cycle is set to be short, so as to make rapid adjustments when the load changes dynamically or the environment causes heat disturbance, and suppress the temperature fluctuation of the first radiation surface 31 and the second radiation surface 32.

[0097] The first PID controller takes the target temperature difference as input and calculates the adjustment amount of the power supply through the combined action of proportional, integral, and derivative terms. Based on the adjustment amount, it adjusts the power supply of power supply unit 1, enabling rapid correction when the real-time radiation temperature deviates from the target radiation temperature, thus maintaining the stable output temperature of the first radiation surface 31 and the second radiation surface 32. The proportional, integral, and derivative coefficients of the first PID controller can be determined using existing tuning methods, such as tuning methods based on critical proportionality or empirical tuning methods based on step response.

[0098] The control strategy unit generates a power supply control strategy based on the radiated load state, and further includes: if the radiated load state is a unilateral load state, then the power supply control strategy specifically includes:

[0099] Set a continuous second control cycle; any second control cycle contains m consecutive detection cycles; m is a positive integer;

[0100] In any second control cycle, the bi-sided temperature difference of each detection cycle is calculated and the average value is taken as the bi-sided temperature difference of the second control cycle; the bi-sided temperature difference of any detection cycle is the difference between the corresponding first radiation temperature and the second radiation temperature or the difference between the second radiation temperature and the first radiation temperature.

[0101] Obtain the target two-sided temperature difference; in any control cycle, obtain the power allocation ratio of power supply unit 1;

[0102] The adjustment amount of the power distribution ratio is calculated based on the second PID controller; the power distribution ratio of the power supply unit 1 is adjusted based on the adjustment amount of the power distribution ratio; the input error of the second PID controller is the target double-sided temperature difference minus the double-sided temperature difference corresponding to the second control cycle.

[0103] Optionally, m is set to 20, meaning the second control cycle includes 20 detection cycles. A relatively long cycle length is used to adapt to the thermal inertia of the double-sided temperature difference change under a relatively stable single-sided load condition, and to prevent excessive intervention from causing system oscillation.

[0104] It should be noted that the specific method for calculating the bi-sided temperature difference in any detection cycle is as follows: Determine the dominant radiant surface; specifically, if the average value of the first radiant temperature in the second control cycle is less than the average value of the second radiant temperature, then the first radiant surface 31 is the dominant radiant surface, i.e., the radiant surface mainly used for heating the load; otherwise, the second radiant surface 32 is the dominant radiant surface. If the first radiant surface 31 is the dominant radiant surface, then the bi-sided temperature difference in any detection cycle is the difference between the first radiant temperature and the second radiant temperature; otherwise, the bi-sided temperature difference in any detection cycle is the difference between the second radiant temperature and the first radiant temperature.

[0105] The target bi-sided temperature difference can be set based on actual needs, such as 5°C to 10°C. This target bi-sided temperature difference is the desired temperature difference to be maintained under high load conditions on one side, resulting in a higher temperature on the dominant radiating surface to avoid continuous underheating or heat waste, thus making energy distribution more rational. Limiting the target bi-sided temperature difference to within 10°C can prevent significant uneven heat distribution or impact on structural stress, ensuring the operational stability of the electric infrared radiating plate.

[0106] Optionally, the power distribution ratio can be set as the ratio of the power supplied to either the first heating unit 11 or the second heating unit 12 to the total power supplied to the power supply unit 1. The initial value of the power distribution ratio is set to 0.5, that is, the power supplied to the first heating unit 11 and the second heating unit 12 is equal. When in a single-sided load state, such as when one side is attached to a workpiece for a long time or close to a high heat capacity object, the heat distribution is biased towards the dominant radiation surface by changing the power distribution ratio.

[0107] The second PID controller takes the calculated result of subtracting the target double-sided temperature difference from the calculated double-sided temperature difference as input. Through the combined action of proportional, integral, and derivative terms, it calculates the adjustment amount of the power distribution ratio. Based on this, it adjusts the power distribution ratio of the power supply unit 1 to the first heating unit 11 and the second heating unit 12, so that the temperature difference between the dominant radiating surface and the other radiating surface gradually approaches the target double-sided temperature difference, thereby achieving reasonable heat distribution. The proportional, integral, and derivative coefficients of the second PID controller can be determined using existing tuning methods, such as tuning methods based on critical proportionality or empirical tuning methods based on step response.

[0108] The control strategy unit generates a power supply control strategy based on the radiated load state, and further includes: if the radiated load state is a dynamic load state, then the power supply control strategy specifically includes:

[0109] Simultaneously, the first control cycle and the second control cycle are set; in any first control cycle, the adjustment amount of the power supply is calculated based on the first PID controller, and the power supply of the power supply unit 1 is adjusted;

[0110] During any second control cycle, it is determined whether a load deviation trend occurs; if a load deviation trend occurs, the adjustment amount of the power allocation ratio is calculated based on the second PID controller, and the power allocation ratio of power supply unit 1 is adjusted.

[0111] Within any second control cycle, determining whether a load deviation trend occurs specifically includes: calculating the response difference for each detection cycle within the second control cycle; marking any detection cycle with a response difference greater than the response difference threshold as a first deviation cycle; and marking any detection cycle with a response difference less than the response difference threshold multiplied by -1 as a second deviation cycle.

[0112] The ratio of the number of first deviation cycles to the total number of detection cycles in the second control cycle is denoted as the first deviation ratio; the ratio of the number of second deviation cycles to the total number of detection cycles in the second control cycle is denoted as the second deviation ratio.

[0113] If either the first deviation ratio or the second deviation ratio is greater than the preset deviation ratio threshold, a load deviation trend will occur.

[0114] Optionally, the deviation ratio threshold is set to 0.7, which is the same as the first ratio threshold; when the first deviation ratio or the second deviation ratio is greater than 0.7, it indicates that the loads corresponding to the two radiation surfaces have experienced a long-term imbalance in the second control cycle.

[0115] Dynamic load conditions can cause rapid fluctuations in the temperature of the radiating surface and pose a risk of affecting the overall thermal balance over a long period. By controlling the load in parallel with the first and second control cycles, transient temperature fluctuations can be suppressed, and the heat distribution structure can be rebuilt when one side of the load dominates.

[0116] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media containing computer-usable program code, including but not limited to disk storage, CD-ROM, optical storage, etc.

[0117] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of protection of this application, and these forms are all within the protection scope of this application.

Claims

1. A mid-center heat dissipation electric infrared radiating plate with double-sided radiation function, characterized in that: Includes a heating module, a heat dissipation module, and an infrared radiation module; among which: The heating module includes a power supply unit (1), a first heating unit (11), and a second heating unit (12); wherein the power supply unit (1) is electrically connected to the first heating unit (11) and the second heating unit (12) respectively, and is used to provide electrical energy; the first heating unit (11) and the second heating unit (12) generate heat after being powered on; The heat dissipation module includes a first heat sink (21) and a second heat sink (22), which are used to uniformly conduct the heat generated by the heating module to the infrared radiation module; The infrared radiation module includes a first radiation surface (31) and a second radiation surface (32) for releasing heat in the form of infrared radiation; The intermediate heat dissipation electric infrared radiation plate with double-sided radiation function also includes a control module; the control module is used to identify the radiation load status and generate a power supply control strategy based on the radiation load status; the power supply unit (1) adjusts the power supply power in real time based on the power supply control strategy. The control module includes a temperature detection unit, a status recognition unit, and a control strategy unit. The temperature detection unit includes temperature sensors installed on the first radiation surface (31) and the second radiation surface (32); the temperature detection unit detects the first radiation temperature and the second radiation temperature based on a fixed detection cycle; the first radiation temperature is the temperature of the first radiation surface (31); the second radiation temperature is the temperature of the second radiation surface (32); The state recognition unit identifies the radiation load state based on the first radiation temperature and the second radiation temperature; the radiation load state includes dynamic load state, convective disturbance state, and unilateral load state. The control strategy unit generates a power supply control strategy based on the radiated load state, including: if the radiated load state is a convective disturbance state, then the power supply control strategy specifically includes: Obtain the target radiation temperature; set a continuous first control cycle; in any first control cycle, calculate the average of the first radiation temperature and the second radiation temperature as the real-time radiation temperature; calculate the difference between the target radiation temperature and the real-time radiation temperature, and record it as the target temperature difference; In any first control cycle, the power supply power of the power supply unit (1) is obtained; the adjustment amount of the power supply power is calculated based on the first PID controller; the power supply power of the power supply unit (1) is adjusted based on the adjustment amount of the power supply power; the input error of the first PID controller is the target temperature difference of the corresponding control cycle; If the radiated load is in a single-sided load state, the power supply control strategy specifically includes: Set a continuous second control cycle; any second control cycle contains m consecutive detection cycles; m is a positive integer; In any second control cycle, the bi-sided temperature difference of each detection cycle is calculated and the average value is taken as the bi-sided temperature difference of the second control cycle; the bi-sided temperature difference of any detection cycle is the difference between the corresponding first radiation temperature and the second radiation temperature or the difference between the second radiation temperature and the first radiation temperature. Obtain the target double-sided temperature difference; in any control cycle, obtain the power allocation ratio of the power supply unit (1); The adjustment amount of the power allocation ratio is calculated based on the second PID controller; the power allocation ratio of the power supply unit (1) is adjusted based on the adjustment amount of the power allocation ratio; the input error of the second PID controller is the target double-sided temperature difference minus the double-sided temperature difference corresponding to the second control cycle; If the radiated load is in a dynamic load state, the power supply control strategy specifically includes: Simultaneously set the first control cycle and the second control cycle; in any first control cycle, calculate the adjustment amount of the power supply based on the first PID controller, and adjust the power supply of the power supply unit (1); During any second control cycle, it is determined whether a load deviation trend occurs; if a load deviation trend occurs, the adjustment amount of the power allocation ratio is calculated based on the second PID controller, and the power allocation ratio of the power supply unit (1) is adjusted.

2. The intermediate heat dissipation electric infrared radiating plate with double-sided radiation function as described in claim 1, characterized in that: The status identification unit is used to identify the status of the radiation load, specifically including: Set an identification period; the identification period includes the latest n consecutive detection periods, where n is a positive integer; For any identification cycle, calculate the first temperature rise rate and the second temperature rise rate for each detection cycle; wherein, the first temperature rise rate for any detection cycle is the rate of change of the first radiation temperature in that detection cycle, and the second temperature rise rate is the rate of change of the second radiation temperature in that detection cycle. Based on the first and second temperature rise rates of each detection cycle, the response mutation amount of the identification cycle is calculated, and whether a load mutation occurs in each detection cycle is identified respectively. If the response mutation amount is greater than the preset response mutation threshold, or if a load mutation occurs in at least one detection cycle during the identification cycle, then the radiation load state is a dynamic load state.

3. The intermediate heat dissipation electric infrared radiation plate with double-sided radiation function as described in claim 2, characterized in that: The calculation of the response mutation amount during the identification period specifically includes: For any detection cycle within the identification cycle, calculate the first response mutation amount and the second response mutation amount, and record the larger of the first response mutation amount and the second response mutation amount as the response mutation amount of the detection cycle; The first response mutation amount in any detection cycle is the absolute value of the difference between the first temperature rise rate of the detection cycle and the first temperature rise rate of the adjacent previous detection cycle; the second response mutation amount in any detection cycle is the absolute value of the difference between the second temperature rise rate of the detection cycle and the second temperature rise rate of the adjacent previous detection cycle. The maximum value of the response mutation amount across all detection cycles within the identification period is taken as the response mutation amount for the identification period.

4. The intermediate heat dissipation electric infrared radiating plate with double-sided radiation function as described in claim 3, characterized in that: Identify whether a load mutation occurs in any detection cycle, including: Calculate the difference between the first and second temperature rise rates for any given detection cycle, and use this as the response difference for the corresponding detection cycle. Mark any detection period as the target period; let the response difference of the target period be R0, and the response difference of the previous detection period adjacent to the target period be R1; If the absolute values ​​of R0 and R1 are both greater than the preset response difference threshold, and the positive and negative signs of R0 and R1 are opposite, then a load mutation occurs in the target cycle.

5. The intermediate heat dissipation electric infrared radiation plate with double-sided radiation function as described in claim 4, characterized in that: The status identification unit is used to identify the status of the radiation load, and also includes: If the radiation load state is not determined to be a dynamic load state, then calculate the temperature fluctuation amplitude for each detection cycle in the identification cycle. Any detection period in which the absolute value of the response difference is greater than the response difference threshold is marked as an imbalanced period; the ratio of the number of imbalanced periods to the total number of detection periods in the identification period is calculated and denoted as the imbalance ratio. If the imbalance ratio is greater than a preset first ratio threshold, the radiation load state is a unilateral load state; otherwise, if the imbalance ratio is less than a preset second ratio threshold, and there is at least one detection cycle in the identification cycle where the temperature fluctuation amplitude is greater than a preset temperature fluctuation threshold, the radiation load state is a convective disturbance state.

6. The intermediate heat dissipation electric infrared radiation plate with double-sided radiation function as described in claim 5, characterized in that: For any detection cycle, the method for calculating the temperature fluctuation amplitude includes: calculating the difference between the first radiation temperature of the corresponding detection cycle and the first radiation temperature of the adjacent previous detection cycle and taking the absolute value as the first fluctuation amplitude; calculating the difference between the second radiation temperature of the corresponding detection cycle and the second radiation temperature of the adjacent previous detection cycle and taking the absolute value as the second fluctuation amplitude; and taking the larger of the first fluctuation amplitude and the second fluctuation amplitude as the temperature fluctuation amplitude of the corresponding detection cycle.

7. The intermediate heat dissipation electric infrared radiation plate with double-sided radiation function as described in claim 6, characterized in that: Within any second control cycle, determining whether a load deviation trend occurs specifically includes: calculating the response difference for each detection cycle within the second control cycle; marking any detection cycle with a response difference greater than the response difference threshold as a first deviation cycle; and marking any detection cycle with a response difference less than the response difference threshold multiplied by -1 as a second deviation cycle. The ratio of the number of first deviation cycles to the total number of detection cycles in the second control cycle is denoted as the first deviation ratio; the ratio of the number of second deviation cycles to the total number of detection cycles in the second control cycle is denoted as the second deviation ratio. If either the first deviation ratio or the second deviation ratio is greater than the preset deviation ratio threshold, a load deviation trend will occur.

8. A mid-center heat dissipation electro-infrared radiating plate with double-sided radiation function as described in claim 7, characterized in that: The intermediate heat dissipation electric infrared radiation plate with double-sided radiation function also includes a housing (4) and a fixing component (5); wherein, the housing (4) is used to encapsulate and fix the heat dissipation module and the infrared radiation module; the fixing component (5) is used to support and fix the heating module.

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