2193results about How to "Burn out prevention" patented technology

The invention discloses a melt differential three-dimensional printer. The melt differential three-dimensional printer mainly comprises a material melting unit, a micro-droplet jetting unit, a cylindrical-coordinate system molding unit and a rack, wherein a servo motor drives a screw rod to rotate in the material melting unit; a heater, which is fixedly arranged inside a machine cylinder, ensures that granules are entirely plastified through temperature regulation; a molten material is transmitted by the screw rod to the micro-droplet jetting unit; in the micro-droplet jetting unit, the molten material is transmitted into a valve body through a hot runner in a runner plate; a linear servo motor drives a valve needle to do reciprocating motion in the valve body so as to quantitatively and intermittently squeeze the molten material out of a nozzle to form melt micro-droplets; in the cylindrical-coordinate system molding unit, the molten micro-droplets are injected to a bearing table for cooling and deposition molding; the servo motors in the left-right direction and in the vertical direction are respectively engaged with the corresponding screw rod to rotate so as to drive the material melting unit and the micro-droplet jetting unit to move along the left-right direction and the vertical direction; a circumference servo motor drives the bearing table with a worm gear to rotate through a worm rod so as to realize three-dimensional movement under a cylindrical-coordinate system.

The invention relates to a temperature control dry heating prevention electronic cigarette and a temperature control method thereof. The temperature control dry heating prevention electronic cigarette comprises a housing, a liquid storage device, an atomization assembly with an atomization chamber and a heating element, a power supply and a circuit control board with a smoking switch, wherein the liquid storage device, the atomization assembly, the power supply and the circuit control board are mounted in the housing in a sleeve mode. The circuit control board provided with a power management module and a temperature sensing unit, wherein the temperature sensing unit comprises a temperature sensor capable of sensing temperature signals of the atomization chamber and converting the temperature signals into temperature electrical signals to be transmitted the power management module, and the power management module determines and deals with the temperature electrical signals to generate control electrical signals for controlling the heating element to be connected to or disconnected to the power supply. The temperature control dry heating prevention electronic cigarette has the advantages of being capable of preventing the dry heating of the heating element of the atomization assembly for preventing the harmful gas and burning smell from being sucked into a human body and the harm to the health of the human body by using the temperature sensor to detect and control the temperature of the atomization chamber.

The invention discloses a gas water heater self-adaption wind pressure resisting control method. The method is characterized in that when it is set in advance through a main controller that no external wind pressure exists, each fan current corresponds to a fan rotating speed, and each fan rotating speed corresponds to a gas proportional valve current value; when external wind pressure exists, a constant-current control mode is adopted, and fan current corresponding to the same load stays the same; in this way, when external wind pressure increases, constant current is maintained by increasing the voltage of a fan; the input power of the fan becomes larger with the increase of the voltage of the fan, the rotating speed of the fan is increased, and meanwhile, the current of a gas proportional valve is controlled to increase according to the optimal wind-air ratio. The constant-current control mode is adopted, and waste gas backflow or down draft is effectively avoided; meanwhile, the wind-air ratio is automatically adjusted according to the change of the rotating speed of the fan, and it is guaranteed that smoke and efficiency are in the optimal state.

The invention relates to an infrared induction temperature control e-cigarette and a temperature control method thereof. The infrared induction temperature control e-cigarette comprises a shell, a liquid storage device nested in the shell, an atomization component, a heating element R in the atomization component, a power supply and a circuit control panel with a smoking switch SW. The circuit control panel comprises an infrared temperature induction unit and a power supply management module. The infrared temperature induction unit can receive an infrared radiation signal which is sent from the heating element R and which represents a certain temperature, then converts the same into a temperature electric signal and sends the temperature electric signal to the power supply management module. After judgment and processing, the power supply management module generates a control electric signal to control the heating element R to be connected/disconnected with the power supply. According to the arrangement, with the infrared temperature induction unit, the temperature in an atomization chamber is detected and controlled, and the atomizer is protected from dry burn. Thus noxious gas and burnt flavor are prevented from entering human bodies, and human health is protected.

The present invention relates to an anti-dry burning device and anti-dry burning control method of electronic cigarettes. The anti-dry burning device of the electronic cigarettes comprises a microcontroller, a buck-boost bridge circuit, a mistorizer resistance value sampling circuit, a mistorizer, a mistorizer resistance value detection module and a battery power supply circuit; and the microcontroller is electrically connected with the buck-boost bridge circuit, the mistorizer resistance value sampling circuit, the mistorizer and the mistorizer resistance value detection module sequentially, and the mistorizer resistance value detection module is connected with the microcontroller; the mistorizer resistance value sampling circuit is electrically with the mistorizer resistance value detection module; a feedback circuit is connected between the mistorizer resistance value sampling circuit and the buck-boost bridge circuit, and the feedback circuit is connected with the microcontroller, and therefore, the microcontroller can adjust the output voltage of the buck-boost bridge circuit and keep the output voltage stable; and when an electronic cigarette is used, tobacco juice is almost exhausted, and the mistorizer resistance value detection module detects that the number of times when the resistance value of the mistorizer consecutively exceeds a dry burning protection set resistance value, exceeds a set number of times, the microcontroller instructs the buck-boost bridge circuit to turn off output, and the electronic cigarette automatically stops working.

The invention discloses an active regeneration grading control method for a particle trap. The active regeneration grading control method aims to acquire the real-time carbon loading amount and temperatures of the particle trap. According to the carbon loading amount, a plurality of carbon loading limit values are determined, a plurality of temperature limit values are determined according to thetemperatures, the real-time carbon loading amount and the carbon loading amount limit values of the particle trap are compared, the real-time particle trap temperatures and the temperature limit values are compared, an active regeneration mode is determined, and the active regeneration mode is one or a combination containing more than one of the conditions that an engine is controlled to defer theignition angle, the air-fuel ratio becomes lean, and the idle speed is increased. According to the active regeneration grading control method for the particle trap, the mode of active regeneration isdetermined according to the regions where different carbon loading amount and the temperatures of the particle trap are located and the marking of the region, so that the carbon deposition is effectively removed in time when the carbon loading amount is too high, and the exhaust back pressure is reduced.

The invention is applicable to the technical field of mobile terminals and provides a method and a device for headset audio playing. The device comprises an audio output unit outputting audio in a mobile terminal. When the audio output unit is a preset unit, the audio output unit detects whether a headset accesses into the mobile terminal or not. The preset unit comprises one or more of a loudspeaker, a sound box, a sound console, a power amplifier and a multimedia console. When the headset is detected to access into the mobile terminal, volume of the output audio is controlled to be proper. In the embodiment, when the headset is accessed into the mobile terminal, the volume of the output audio is controlled to be proper, volume of the headset is avoided from being high, eardrums of users are protected from damages, and burnout of the headset or sound distortion caused by disconnection and dislocation of a voice coil of the headset are avoided, thereby safety of the eardrums of the users playing the audio through the headset is improved, and service life of the headset is prolonged.

The embodiment of the invention discloses a circuit for detecting a locked point current of a micro motor, which is used for accurately detecting the locked point current of the micro motor. The circuit for detecting the locked point current of the micro motor, disclosed by the embodiment of the invention, comprises the micro motor, an input power supply, a micro motor current sampling circuit, a switch and a comparer circuit, wherein the voltage value of the input power supply is variable, the input power supply is used for providing a working voltage to the micro motor; the micro motor current sampling circuit is used for sampling the current of the micro motor and generating a sampling voltage; one end of the switch is connected with the input power supply, the other end of the switch is connected with the micro motor, the switch is used for controlling the working state of the micro motor; one input end of the comparer circuit receives the sampling voltage, the other input end of the comparer circuit receives a reference voltage, the reference voltage and the input power supply are in a direct proportion relation, the comparison output end of a comparer outputs a switching signal used for controlling switching on and off of a drive switch.

A multi-stage intensifying auxiliary sintering type ignition holding furnace comprises a sintering machine (1), an ignition device (2) and an auxiliary combustion device (3), wherein the sintering machine (1) has a trolley (1); the ignition device (2) and the auxiliary combustion device (3) are orderly arranged on the trolley (1); the auxiliary combustion device (3) has a hot air device (4), a blow-injection device (5) and an auxiliary combustion cover (6); the hot air device (4) has a hot air pipeline (401); and the blow-injection device (5) has a fuel gas total pipe (501), a fuel gas branch pipe (502), a blow-injection pipe (503) and a rack (504). The multi-stage intensifying auxiliary sintering type ignition holding furnace can replace coke by partial fuel gas and hot smoke and achieves sintering bed segregation coke distribution effect via phase conversion; blow-injection device adjustability and freedom can be enhanced; multi-procedure multi-medium coupling blow-injection can be achieved; and the multi-stage intensifying auxiliary sintering type ignition holding furnace has great safety performance and high sintering quality.

The invention provides a device for evenly heating a battery of an electric car which is convenient to control, and a control method thereof. The battery heating device comprises a battery bag with a plurality of battery monomers which are connected with each other, each battery monomer is placed in a heating sleeve possessing electric heating function, the key point is the anode of the battery bag is connected with a positive terminal of a charger through a first switch, the cathode of the battery bag is connected with a passive terminal of the charger though a second switch; the power supply of the heating sleeve is selectively connected with a power supply circuit of the battery bag or a power supply circuit of the charger through the first switch, the second switch and a third switch the first switch, the second switch and the third switch are controlled by a battery management system, the battery management system is respectively connected with the battery bag and the charger. According to the invention, the device for heating the battery of the electric car uses two power supplies for heating the battery bag, so that the battery bag can be internally and externally heated, and the heating can be uniform and rapid.

The present invention relates to an LED drive circuit which includes a micro-control unit, a voltage protection unit and an LED light source. The voltage protection unit includes an under-voltage protection module, an overvoltage protection module and a reference voltage module. The under-voltage protection module includes a detection voltage input terminal and a reference minimum voltage input terminal. The overvoltage protection module comprises a detection voltage input and a reference maximum voltage input terminal. The reference voltage module provides reference minimum voltage to the under-voltage protection module and provides reference maximum voltage to the overvoltage protection module. The under-voltage protection module and a reference voltage regulation module are set, thus when input voltage is lower than rated minimum voltage, detection voltage is lower than the reference minimum voltage, and the LED light source is turned off. The overvoltage protection module and the reference voltage regulation module, thus when the input voltage is higher than rated maximum voltage, the detection voltage is higher than the reference maximum voltage, and the LED light source is turned off. The LED drive circuit can maintain a constant current characteristic and has the protection of under-voltage, overvoltage and overheating.

The present invention relates to a methane and oxygen pre-mix device, mainly consists of a casing, a gas distributed system, a heat exchange system and a multiorifice gas distribution plate; the gas distributed system adopts the rotational flow or the circular flow gas distributed system; the rotational flow gas distributed system consists of a methane air intake system, an oxygen air intake system, an upper distributor and a lower distributor; the circular flow gas distributed system consists of center feed pipes, cross feed pipes and ring gas distributor of the methane and the oxygen; the heat exchange system consists of an upper separator, a lower separator, a centre internal pipe, an external pipe, a metal fin, a heat exchange medium inlet pipe and a heat exchange medium outlet pipe; via the gas distributed system, the methane and the oxygen have a preliminary mixture in a smaller space, then by the stimulant fluidized bed consisting of the centre internal pipe, the external pipe and the metal fin, circuitously flowing upwards, achieving a molecular level mixture at the exit. The present invention effectively increases the pre-mix effect and guarantees the inflaming retarding and explosion prevention of the pre-mix chamber, having a good function in the industry of methane partial oxidation to syngas.

The invention discloses a method for calculating the switching-off and switching-on time of a breaker and the stroke of a moving contact of the breaker. According to the method, first, a switching-on operating coil starts to be powered on after the breaker receives a switching-on instruction, the coil generates sufficient electromagnetic force to push an iron core to move along with increasing of current so that an energy storage mechanism can be started to release energy to generate acting force for driving the moving contact to move, then, the moving contact can make contact with a fixed contact and arrive at a position where switching-off is just achieved at the moment, and the stoke of the moving contact is called as idle stroke before; second, the moving contact continues moving on to arrive at the switching-on position and keeps a switching-on state with a mechanism, and the process is called as over-stroke; the stroke distance of the moving contact is the sum of the idle stroke distance and the over-stroke distance; in the switching-off process, the first step and the second step are repeated in the same way. The method is simple in algorithm, easy to realize in an embedded system, capable of lowering cost effectively and beneficial to miniaturization of the system. The moment when the moving contact of the breaker starts to move and the moment when the moving contact of the breaker stops moving can be accurately acquired.

The invention belongs to the field of the comprehensive utilization of coke-oven gas, and discloses a novel process for making synthetic natural gas by using the coke-oven gas. The qualified synthetic natural gas product is produced by the process comprising the steps of hydrodesulfurization, carbon compensation, multi-level methanation, cooling, separation and the like. The process can effectively prevent the temperature runaway phenomenon of a methanation reactor, can reasonably distribute the load of the methanation reactor, improves the conversion rate of CO and CO2, and provides a new method for making the synthetic natural gas by using the coke-oven gas.

The invention discloses an organic gas adsorption, desorption and purification device in the field of waste gas purification equipment and comprises a filtering device, an outlet of which is connected with an adsorption device, and an outlet of the adsorption device is communicated with air through an air exhauster, the adsorption device comprises two adsorption towers which are serially connected and arranged; an inlet valve and an outlet valve are respectively arranged at an inlet and an outlet of the adsorption towers, active carbon adsorptive filtering material is arranged inside the adsorption towers, and a circulating wind outlet is arranged behind the inlet valve, a circulating wind inlet is arranged in front of the outlet valve, disconnecting valves are arranged on corresponding pipelines of the circulating wind inlet and outlet; furthermore, a fire arrestor, a waste gas burner and a circulating fan are connected between the circulating wind outlet and the circulating wind inlet through circulating wind pipes; one part of the exhausted gas of the waste gas burner is exhausted into the circulating wind inlet through the circulating fan and the other part of the exhausted gas is directly exhausted into air, and a cooling fan is arranged at one side of the circulating wind inlet. The invention can implement adsorption, desorption and purification at the same time, thus improving working efficiency, being applicable for industrial production which needs to process organic waste gas.

The invention discloses a reconfigurable substrate integrated waveguide bandpass filter and a reconfigurable method of the filter and mainly solves technical problems that the tuning range is small, the insertion loss of reconfigurable substrate integrated waveguide bandpass filters is high and control voltage of variable capacitance diodes cannot be directly applied to substrate integrated waveguides. One variable capacitance diode is placed in a non-metal via hole formed in the center of each of two complementary split-ring resonators of the bandpass filter, the metal part at an inner ring opening of each complementary split-ring resonator is replaced with a blocking capacitor, so that a substrate integrated waveguide is separated from an outer circuit, and a voltage source is prevented from being short-circuited; the variable capacitance diodes are connected with a direct-current bias circuit, reversed bias voltage at two ends of the variable capacitance diodes is adjusted, junction capacity of the variable capacitance diodes is changed, so that the resonant frequency of the two complementary split-ring resonators is affected, and the passband center frequency is reconfigurable. The feeding manner of the variable capacitance diodes in the substrate integrated waveguide is realized, the control manner is simple and easy to implement, the frequency tuning range is relatively large, the in-band insertion loss is low, and the filter can be applied to a wireless communication system.

The invention discloses a heating device for a gas humidifier. The heating device comprises a casing, a heating disc assembly and a center control module. The heating disc assembly is provided with a heating disc and is installed on the casing, and the heating disc is exposed above the casing. The center control module comprises a power source assembly, a human-computer interface and a main control circuit board assembly, wherein the power source assembly and the main control circuit board assembly are fixedly installed on the casing and accommodated in the casing, and the human-computer interface is installed on the casing and exposed on the side of the casing. The human-computer interface is electrically connected with the power source assembly and the main control circuit board assembly and operates the center control module by controlling and sending data. By optimal design of the casing, danger of burning and scalding and faults such as open circuit are effectively avoided, and danger of electric leakage and electric shock can be effectively avoided by optimal design of the heating disc assembly. By optimal design of the center control module, a whole humidifying system is high in intelligence degree, safe and reliable.

The invention discloses a multi-component simulative engine applied to vacuum plume effect experimental research and an ignition scheme thereof. The multi-component simulative engine comprises a pre-combustion chamber head part, a pre-combustion oxygen supplementation chamber, a thrust chamber head part and a thrust chamber body part, wherein the pre-combustion chamber head part is tightly connected with the pre-combustion oxygen supplementation chamber, and the pre-combustion oxygen supplementation chamber, the thrust chamber head part and the thrust chamber body part are connected tightly and sequentially. The ignition scheme comprises working medium input, ignition time sequence and pre-combustion chamber capacity design. According to the invention, a propellant working medium is input through an ignition incendiary agent welding nozzle, an ignition oxidant welding nozzle and an oxygenating agent welding nozzle, and simulation of combustion products of different real engines can be realized by matching different incendiary agents, oxidants and other gases.