16 results about "Intermittent heating" patented technology

The invention belongs to the technical field of induction cookers, and discloses a low-power continuous electromagnetic heating technology and an induction cooker, the resonant frequency of an LC resonant circuit is designed to be greater than 18kHz, and a SiC MOSFET device works at a switching frequency higher than the resonant frequency, so that the low-power continuous electromagnetic heating technology is realized. The intermittent heating problem of'stop-start-stop-start 'caused by too small duty ratio during low-power heating of the existing induction cooker is effectively solved; according to the technical scheme, the power-duty ratio mapping data is obtained through the MCU module, and the duty ratio and the pulse width of the PWM signal are accurately calculated according to the target power, the target switching frequency and the timer clock frequency, so that continuous and stable energy output is realized under low power; the electromagnetic oven can effectively solve the problems of intermittent heating, unstable circuit work, increased energy consumption and noise of the existing electromagnetic oven during low-power heating.

The present application relates to the technical fields of constant temperature heating, and discloses a constant temperature bath system for enriching gas and liquid phase, which comprises a waste gas circulating device, a constant temperature device and a control device, the waste gas circulating device is used for circulating waste gas into the constant temperature device to enrich heavy metals, and the control device is used for controlling the heating mode of the constant temperature device; a collection unit is used for collecting the real-time temperature of the waste gas and the target temperature of the constant temperature device to determine the heating mode; when the temperature difference is large, a processing unit is used for intermittent heating with high power, and the maximum power and the intermittent duration of the intermittent heating with high power are determined according to the heat loss; the real-time temperatures of several positions in the constant temperature solution are collected in real time, a temperature distribution model is established, and the average temperature of the constant temperature solution is obtained; and a judging unit is used for obtaining the temperature change rate according to the average temperature at the intermittent end time and the target temperature, and determining whether to adjust the intermittent duration. The present application improves the efficiency and precision of the enrichment of heavy metals in waste gas, and reduces manual intervention through intelligent temperature control and self-adaptive adjustment.

The invention belongs to the technical field of induction cookers, and discloses a low-power continuous heating method based on a self-adaptive PPG algorithm and an induction cooker. A power switch tube is driven to work by initializing PPG parameters, collecting characteristic electrical parameters of a main loop of the induction cooker in real time, calculating characteristic error parameters, adaptively optimizing the PPG parameters and adjusting PWM signals according to the optimized PPG parameters. The problems that due to the fact that an intermittent heating mode is adopted in a low-power section of a traditional induction cooker, heating is not uniform, pot temperature fluctuation is large, noise is serious, and a fixed parameter PPG control strategy cannot adapt to nonlinearity and time-varying characteristics of a resonance system of the induction cooker can be effectively solved.

The invention discloses a soft foundation dam system rapidly built by utilizing engineering waste soil materials and a construction method thereof, and the system comprises a soft foundation dam structure built by utilizing the engineering waste soil materials, a flow state solidified soil preparation and conveying system, a hot drainage plate driving system, a foundation and an intermittent heating power supply system, the soft foundation dam structure comprises a bagged flow state solidified soil dam body, and the bagged flow state solidified soil dam body comprises a bagged flow state solidified soil cushion layer, a hot drainage plate, a bionic drainage cushion and a bagged flow state solidified soil filling body. The construction method mainly comprises the following steps of construction preparation, preparation of flow-state solidified soil slurry, filling of a first layer of flow-state solidified soil, driving of a hot drainage plate and the like, filling of a flow-state solidified soil dam body layer by layer, inner side air-closing anti-seepage construction and the like, the steps are repeated, and finally a power source is removed, and a dam top protection structure is constructed. The device has the advantages of energy conservation, environmental protection, high strength, flow state pumping and the like, solves the problem of shortage of broken stone materials, and has a wide application prospect.

The application relates to the technical field of cooking control, and discloses a steam hot spring egg control method and device of an egg boiling device, which is applied to the egg boiling device, the egg boiling device comprises a main control chip, an environment temperature acquisition device and a heating body, the method comprises the following steps: detecting a function mode in which the egg boiling device is located through the main control chip; when it is detected that the function mode is a hot spring egg mode, the main control chip controls the heating body to perform a heating control operation by acquiring a target environment temperature of the egg boiling device based on a preset heating logic control algorithm; wherein the target environment temperature of the egg boiling device is acquired by the environment temperature acquisition device, the heating control operation comprises a continuous heating operation, an intermittent heating operation and a dynamic heating operation, and the heating control operation is used for controlling the steam release amount of the egg boiling device to realize temperature control of the internal environment of the egg boiling device. It can be seen that the application can shorten the cooking time of the hot spring egg by using the egg boiling device, and precise temperature control of the egg boiling device can be realized.

The invention provides a compact once-through steam generator, belongs to the technical field of heat energy recycling equipment, and aims to solve the problem that an existing heat exchanger is prone to cracking in an intermittent heat supply scene. The compact once-through steam generator comprises an outer shell (1), a heat release working medium spiral coil (2) and a heat absorption working medium input pipe (3); the outer shell (1) comprises a shell wall (11) and an inner cavity (12), the heat release working medium spiral coil pipe (2) and the heat absorption working medium input pipe (3) are both located in the inner cavity (12), a nozzle (34) is arranged at the outlet end of the heat absorption working medium input pipe (3), and a heat absorption working medium ejected by the nozzle (34) can accelerate the flowing speed of the heat absorption working medium on the outer surface of the heat release working medium spiral coil pipe (2). The compact once-through steam generator comprises the heat release working medium spiral coil, can bear stress fatigue under high frequency and large temperature difference, and can ensure safe and reliable operation.

The invention discloses a residential building intermittent heating control method and system, and belongs to the technical field of building environment and energy application. The method comprises the following steps: acquiring a building envelope temperature sequence, indoor and outdoor environment data and weather forecast information through a data sensing module; the dynamic prediction module corrects weather forecast errors by using a long short-term memory (LSTM) network, constructs a multi-node thermal network model, and predicts an indoor temperature attenuation trend under a heating-free condition; the decision module evaluates the necessity of heating intervention based on the prediction result and dynamically optimizes the starting opportunity; and the optimization control module realizes adaptive optimization of model parameters through rolling prediction and deviation monitoring. The method effectively solves the problems that in the prior art, building thermal inertia quantization is insufficient, prediction deviation is large, and energy efficiency and comfort level are unbalanced, and has the advantages of being easy to implement, remarkable in energy-saving effect and wide in application range.

The application relates to the technical field of power equipment detection, and discloses an electrical equipment flaw detection heat preservation tool and a temperature control method. The method comprises the following steps: a driving assembly mechanical phase and an air bag inflation and deflation state mapping model are established, and a rotation period is divided into exhaust and air intake intervals; a current rotation angle of a cam and an instantaneous angular velocity of a motor are collected in real time; a scavenging phase offset is dynamically calculated based on a heating plate thermal inertia constant and the angular velocity, and then a cutoff phase of a heating power supply in the exhaust interval is determined; according to a comparison result of the real-time angle and the cutoff phase, a segmented time sequence control including active power modulation, residual heat scavenging and air intake static locking is performed on the heating assembly. The rotation speed and the power dynamic matching mechanism are used to maintain the constant air outlet temperature, the time sequence offset of the airflow lagging behind the current stop is used to realize complete elimination of the residual heat, and the accumulated heat temperature rise and dry burning risk in the intermittent heating are effectively solved.

The utility model discloses an intermittent heating screw extrusion device based on electromagnetic induction, which comprises an extrusion screw and a machine barrel covered outside the extrusion screw, two ends of the machine barrel are respectively provided with a feed port and a discharge port, the extrusion screw is connected with a rotary power mechanism, and the rotary power mechanism is connected with the machine barrel. The rotary power mechanism drives the extrusion screw to rotate around the axis of the extrusion screw so that the extrusion screw can extrude materials between the machine barrel and the extrusion screw from the feeding port to the discharging port, and the machine barrel is provided with a plurality of electromagnetic heating coils independently controlling the current intensity in the axial direction of the machine barrel. When the extrusion screw rotates, magnetic induction lines of the electromagnetic heating coils are cut to generate heat to form a plurality of heating areas corresponding to the electromagnetic heating coils, and the heating areas are provided with temperature detection modules. The utility model has the advantages that the temperature is accurately regulated and controlled by a plurality of independent heating areas, the year of spinning molten materials is prolonged, the energy consumption is saved, the energy overflow is reduced, and the overall service life of the device is prolonged.

The utility model relates to the technical field of electromagnetic oven discloses power mainboard based on intermittent heating technology, include: switching power supply, surge protection circuit, IGBT drive circuit, the MCU control circuit of responsible data acquisition, the pot bottom sensor detection circuit of responsible collection pot bottom temperature data, the burning mouth, communication interface, the utility model discloses when low -power operation, electromagnetic oven enters intermittent working mode (high -frequency switch alternative open -close), avoids the equipment overheating problem caused by continuous conduction, can effectively solve the problem of IGBT high temperature, both energy -conserving, reduce invalid power consumption, reduce the whole machine energy consumption, reduce the failure rate caused by high temperature, when appearing instantaneous high pressure, MCU immediately cuts off power output, avoids the surge current impact IGBT and rectifier bridge, plays accurate real -time protection to equipment, through thermistor real -time feedback pot bottom temperature, and MCU dynamic adjustment heating power, avoid the energy waste when empty burning or overheating, improve heating efficiency.

The application discloses an in-situ conversion method of coal seams by radio frequency heating underground, and particularly relates to the technical field of coal seam pyrolysis conversion, and comprises the following steps: injecting a preset fluid to form a fracture network after drilling, and then injecting a preset first material to construct a filling structure with electromagnetic response characteristics; expanding the borehole and filling a preset second material to form a structure area; arranging a radio frequency heating device and a temperature monitoring device to obtain temperature change data; periodically and dynamically calculating a temperature change gradient coefficient and a temperature stable offset coefficient, generating a control parameter data combination based on the two through reasoning, and dynamically regulating and controlling a heating period and a power output in an intermittent heating mode; the application constructs a multidirectional permeation channel fracture network and a differential electromagnetic response structure, optimizes a radio frequency energy coupling path, improves the heating uniformity and conversion efficiency of coal seams, introduces a dynamic coefficient reasoning mechanism based on temperature data, realizes intelligent regulation and control of the intermittent heating period and power, and enhances the safety and adaptability of the system.

The present application relates to the technical field of building material maintenance, and particularly relates to a thin-layer ground repairing mortar temperature control maintenance process. The process comprises: paving a heat-conducting composite maintenance film after initial setting and forming a closed water vapor layer, and collecting the surface layer and ambient temperature of the mortar in real time; determining an initial temperature control strategy according to the difference between the surface layer temperature and the target maintenance temperature, and starting the heating unit at a corresponding power to warm up and maintain; adjusting the heating power according to the relationship between the surface layer temperature change rate and the preset temperature rise rate; obtaining the temperature difference between the surface layer and the interior, and reducing the power or switching to an intermittent heating mode when the temperature difference exceeds the threshold value to prevent cracking; and based on the comprehensive maintenance index exceeding the preset standard index, adjusting the moisture permeation amount or the maintenance time of the maintenance film according to the maintenance deviation rate. The present application realizes the self-adaptive optimization of the crack resistance, uniformity and strength in the maintenance process of the thin-layer repairing mortar through the temperature and humidity closed-loop regulation and control technology of multiple parameters.

The utility model relates to the technical field of electromagnetic stove discloses can realize low -power automatic switching power mainboard, include: the switching power supply that will alternating current convert for direct current and power supply for mainboard, realize the surge protection circuit that power output is closed when grid voltage exists transient high pressure, receive the PWM control signal of MCU, and drive IGBT module high -frequency switch operation's IGBT drive circuit, the MCU control circuit that is responsible for data acquisition, the pot bottom sensor detection circuit that is responsible for gathering pot bottom temperature data, the burning -in mouth that provides MCU program burning -in interface, the communication interface for connecting power mainboard and control board, realize the resonance capacitance switching circuit of dynamic switching resonance capacitance value, the utility model satisfies user can use high -power cooking, also can realize low -power automatic switching continuous heating's function, bid farewell to the problem of previous low -power intermittent heating.

The invention provides a compact type steam generating device, belongs to the technical field of heat energy recycling equipment, and aims to solve the problem that an existing heat exchanger is prone to cracking in an intermittent heat supply scene. The compact type steam generating device comprises an outer shell (1), a heat release working medium spiral coil pipe (2) and a heat absorption working medium input pipe (3); the heat release working medium spiral coil pipe (2) and the heat absorption working medium input pipe (3) are both located in the inner cavity (12), a nozzle (33) is arranged at the outlet end of the heat absorption working medium input pipe (3), the spraying direction of the nozzle (33) is parallel to the vertical direction, and the heat absorption working medium sprayed out of the nozzle (33) can accelerate the flowing speed of the heat absorption working medium on the outer surface of the heat release working medium spiral coil pipe (2). The compact type steam generating device comprises the heat release working medium spiral coil pipe, can bear stress fatigue under high frequency and large temperature difference, and can guarantee safe and reliable operation.

The invention belongs to the technical field of code scanning equipment, and particularly relates to code scanning equipment with a code scanning head provided with a heating system and a heating method of the code scanning equipment. Comprising a shell and a sealing cover, a heating demisting assembly is arranged on the sealing cover, an annular cover edge at the bottom of the sealing cover covers and is embedded in the shell to form sealing connection, a pressure adjusting assembly is arranged in the shell, and the covering action of the sealing cover and the shell drives the pressure adjusting assembly to accumulate force. The pressure adjusting assembly adjusts the size of the pressurizing space in the shell according to the pressure change generated by heating of the heating demisting assembly, and the pressure adjusting assembly releases accumulated force and pushes gas in the pressurizing space to be exhausted when sealing of the outer shell and the sealing cover fails; the energy consumption of the equipment can be reduced through intermittent heating, and the problem that the gap part of the detachable connection shell leaks air due to the internal and external air pressure difference during repeated heating caused by intermittent heating of the code scanning equipment is solved.

The invention discloses an underground radio frequency heating coal seam in-situ conversion method, and particularly relates to the technical field of coal seam pyrolysis conversion, and the method comprises the following steps: injecting a preset fluid after well drilling to form a fracture network, and then injecting a preset first material to construct a filling structure with an electromagnetic response characteristic; chambering and filling a preset second material to form a structural area; arranging a radio frequency heating device and a temperature monitoring device to obtain temperature change data; periodically and dynamically calculating a temperature change gradient coefficient and a temperature stability deviation coefficient, generating a control parameter data combination through reasoning based on the two coefficients, and dynamically regulating and controlling a heating period and power output in an intermittent heating mode; according to the invention, by constructing the multidirectional permeation channel crack network and the differential electromagnetic response structure, the radio frequency energy coupling path is optimized, and the heating uniformity and conversion efficiency of the coal seam are improved; a dynamic coefficient reasoning mechanism based on temperature data is introduced, intelligent regulation and control of the intermittent heating period and power are achieved, and the safety and adaptability of the system are enhanced.