94results about How to "Solve burnt" patented technology

The invention discloses a control method for a food processer. The control method includes the steps that a motor of the food processer is in the starting state, operating parameters of the motor areobtained in real time, so that whether the locked-rotor condition of the motor occurs or not in the operating process is detected, wherein the operating parameters at least comprise working currents and/or the rotating speed of the motor; when it is detected that the locked-rotor condition of the motor occurs in the operating process, driving of the motor is controlled to be closed. The inventionalso provides a control device for the food processer. By means of the control method and device for the food processer, the technical problem that as the locked-rotor condition of the motor of the food processer occurs, the motor is burned is solved.

The invention discloses a multifunctional flexible grounding device, which comprises a transformer, a voltage source inverter, a winding current detection unit, an amplifier, a PWM drive signal generation unit, a capacitance current detection unit and a neutral point voltage detection unit. The winding current detection unit is used for generating a current signal. The amplifier amplifies the current signal to obtain a reference signal. The voltage source inverter is used for generating a current or voltage which is in the same frequency as the reference signal and acts on the secondary side winding of the transformer. The neutral point is grounded through the arc suppression coil, and the capacitance current detection unit is used for detecting the current of the grounding capacitor and calculating the first amplification factor, and the primary side winding of the transformer is equivalent to the continuously adjustable inductance. When the neutral point is grounded through the smallresistor, the neutral point voltage detection unit detects the neutral point voltage and calculates the second amplification factor, and the primary side winding of the transformer is equivalent to acontinuously adjustable small resistor. By means of different control modes, the two neutral point grounding modes can be realized without adjusting devices.

The invention relates to a grill, in particular to a meat baking grill for food processing. The meat baking grill for food processing can bake meat conveniently and adjust taste of the meat conveniently. In order to solve the technical problem, the meat baking grill for food processing comprises a first support, a second support, a baking plate, a mounting box, an overturning component, a clampingcomponent, a lifting component, a swinging component, a seasoning spreading component and a condiment; and the mounting box is fixedly connected to the first support and the second support, the baking plate is fixedly connected to the inner bottom surface of the mounting box, the overturning component is fixedly connected to the first support and the second support, and the clamping component isin transmission connection with an outputting end of the overturning component. Effects of baking meat conveniently and conveniently adjusting the taste of the meat are achieved.

The invention discloses a redundant serial communication device with an automatic replacing function. The redundant serial communication device with the automatic replacing function comprises a power module, a high-voltage anti-latch type four-channel single-pole single-throw (SPST) switch, a control unit, a sensor unit, a first serial port unit and a second serial port unit, wherein the first serial port unit and the second serial port unit are redundant for each other. The first serial port unit comprises a first serial port chip module and a first low input voltage load current-limit switch module. The second serial port unit comprises a second serial port chip module and a second low input voltage load current-limit switch module. The control unit controls the first serial port chip module or the second serial port chip module to be connected with external serial port modules through the high-voltage anti-latch type four-channel SPST switch. The redundant serial communication device with the automatic replacing function has the advantages of being safe and reliable, capable of monitoring and replacing damaged chips automatically, simple in circuit structure, and long in service life.

The invention discloses a high-voltage direct-current power distribution unit and a control method of the high-voltage direct-current power distribution unit. The high-voltage direct-current power distribution unit comprises a electromechanical hybrid type switch unit A, a pre-charging unit B and a discharging follow current loop unit C. The switch unit A comprises a contactor T and an insulated gate bipolar transistor K1. The pre-charging unit B comprises a power resistor R2 and a charging switch K2. The discharging follow current loop unit C comprises a power resistor R3, a discharging switch K3 and a freewheel diode D. According to the high-voltage direct-current power distribution unit, the problems that in a high-voltage direct-current power distribution system, a contactor is prone to being burned down, an impulse current occurs at the moment when a large capacitor is connected, residual releasing of a load capacitor occurs when the capacitor is disconnected and defects exist when a power distribution unit is compatible with different load capacitors are solved.

A crusty pancake is made up through mixing wheat flour with edible salt solution to become paste, mixing flavouring, drying yeast, salt, cream, warm water and flour to obtain stuffing, dissolving salt and dry yeast in warm water and mixing with flour and hot butter to obtain dough, rolling dough block to become wrapper, brushing said paste on the one surface of wrapper, wrapping stuffing in it, rolling and baking.

Provided is a birotor wheel hub electric automobile motor comprising an external rotor, internal rotors, a stator and a bearing. The internal rotors are arranged in a symmetrical mode. The symmetrical internal rotors are connected with a stator axle through the bearing. The internal and external surfaces of the stator are of double-face grooving structures. Coil windings which are distributed symmetrically are embeded in the double-face grooving structures arranged on the stator. The coil windings are separately connected with corresponding ECUs, and are separately controlled by the ECUs. Each ECU is connected with a main ECU of each wheel of a vehicle system. The coil windings are electrically connected with a power supply. The beneficial effects of the present invention are that: problems of burnout due to overheating of the wheel hub motor is solved through alternative working of an appropriate number of independent motors, so that the utility life of the motor is prolonged; since the coil windings in the stator are distributed in the symmetrical mode, when the birotor wheel hub electric automobile motor of the invention works, the symmetrical distribution of the coil windings enables a stress applied to the motors in a symmetrical direction to be offset, so that friction of the axle and the bearing is reduced, and the usage life is prolonged.

The invention provides a vehicle high-pressure power supply control system and a method. The system comprises a current detecting element, an anode contactor, a cathode contactor, a precharging contactor, a precharging resistor, a protection capacitor and a whole vehicle controller. In electrification, the whole vehicle controller controls the cathode contactor and the precharging contactor to close to charge the precharging resistor and the protection capacitor; and when a current value of high-pressure power supply is higher than or equal to a first threshold, the anode contactor is closed. In power failure, when the current value of high-pressure power supply is lower than or equal to a second threshold, the whole vehicle controller controls the cathode contactor to be cut off. When the contactors are closed and cut off, the system can solve the problem of burn down of the contactors or explosion accidents caused by high current, and improves the safety of a vehicle electric system.

The invention provides a mold evacuating device for an injection molding machine, and an operating method of the mold evacuating device. The mold evacuating device comprises an equipment main body, a vacuum pump, a negative pressure tank, a one-way valve and a controller. The operating method of the mold evacuating device for the injection molding machine comprises the steps that when a movable mold is 0.5-2mm away from a fixed mold, an injection molding machine host transmits a control signal to the controller; the controller transmits a start-up command to the one-way valve; the one-way valve is opened; the vacuum pump runs; air in a mold cavity is drawn into the negative pressure tank; the interior of the mold cavity is vacuum; the injection molding machine host transmits mold assembly information to the controller; the controller transmits a close command to the one-way valve; the one-way valve is closed; and the vacuum pump stops running. With the adoption of the technical scheme, the density and surface accuracy of a mold product can be improved; the problem that exhaustion, a flow line, charring and mold filling are poor is solved; a product filling effect can be improved greatly; and the product quality is improved.

The invention discloses a resin composition for laser marking. The components in weight percentage of the resin composition for laser marking are 30 to 58 percent of PMMA, 40 to 68 percent of toughening agent, 0.01 to 0.03 percent of antimony trioxide, 0.12 to 0.50 percent of carbon black toner, 0.01 to 0.50 percent of oiled color batch powder, 1.00 to 1.19 percent of antibacterial agent and 0.10 to 0.50 percent of lubricating treatment agent. The invention also discloses a preparation method for the resin composition for laser marking. Products formed by the resin composition are suitable for laser marking (carving); pictures and texts of processed geometrical shapes through laser carving have high color contrast, and are consistent in color, thereby the phenomena of cauterization and nigrescence can not occur. Compared with common ABS laser carving materials, the qualification rate of the products of the resin composition after laser carving is improved to 99.98 percent, and simultaneously the products have good antibacterial function.

The invention provides an IGBT overcurrent protection circuit and an air conditioner. The IGBT overcurrent protection circuit includes a current sampling unit, a protection unit, a drive unit and a control unit, wherein the current sampling unit is connected with an emitter of the switch tube, A DC side negative electrode of a rectify bridge in a power factor correction circuit, and the input endof the protection unit separately, The output end of the protection unit is divided into two paths, one is connected with the input end of the control unit, the other is connected with the input end of the drive unit through a wire, the output end of the control unit is connected with the input end of the drive unit, and the output end of the drive unit is connected with the grid of the switch tube. Thus, when overcurrent occurs to the power factor correction circuit, the IGBT overcurrent protection circuit generates hardware protection, thereby realizing more timely and effective protection of the switch tube.

The invention discloses a method for preparing bean curd by means of a bean curd machine and the bean curd machine. The method comprises the following steps of: pouring quantified soy-bean milk into a cup body of the bean curd machine, starting a timer and cooking the soya-bean milk in the bean curd machine; at the first soy-bean milk cooking stage, heating the soy-bean milk in the cup body by the bean curd machine for a moment T1, then stirring, and circulating for a plurality of times; at the second soy-bean milk cooking stage, heating the soy-bean milk in the cup body by the bean curd machine for a moment T2, then stirring, and circulating for a plurality of times; and at the third soy-bean milk cooking stage, heating the soy-bean milk in the cup body by the bean curd machine for a moment T3, then stirring, and circulating for a plurality of times; stopping heating when the timer reaches the preset time; and applying quantified brine or a ficusin coagulator to the completed cooked soy-bean milk. The technical proposal provided by the invention is capable of solving the problems of coking, spilling, undercooking and overcooking easily encountered in the bean curd preparing process.

The invention discloses an IPM protection device, an electric motor and an IPM protection method thereof. The device comprises a current sampling circuit, a first overcurrent protection circuit, a second overcurrent protection circuit and a controller, wherein, the current sampling circuit is used for collecting the three-phase current of the motor driven by the IPM to be protected, and outputtinga first output signal under the normal condition of the current sampling circuit, or outputting a second output signal under the abnormal condition of the current sampling circuit. The first overcurrent protection circuit is used for realizing overcurrent protection of IPM to be protected according to the first output signal under the control of the controller. The second overcurrent protection circuit is configured to realize overcurrent protection of the IPM to be protected according to the second output signal under the control of the controller. The scheme of the invention can solve the problem that the IPM internal power device is burned out after the operational amplifier chip fails in the current sampling circuit, and the protection reliability is poor, so that the effect of improving the protection reliability is achieved.

The invention discloses a vertical pulverizer. The vertical pulverizer comprises a rack, a case arranged on the rack, a feeding device arranged on the case, a milling disc device arranged in the case, a drive device arranged on the rack and a movable milling disc water inlet device. The milling disc device comprises a fixed milling disc and a movable milling disc arranged below the fixed milling disc. The feeding device is connected with the fixed milling disc to feed materials into the position between the fixed milling disc and the movable milling disc. The drive device is connected with the movable milling disc and drives the movable milling disc to rotate. A first cooling water circulating structure is arranged in the movable milling disc. The movable milling disc water inlet device is connected with the first cooling water circulating structure to achieve cooling water circulating in the movable milling disc. The vertical pulverizer adopts the above structure, cooling liquid can flow in the movable milling disc by a circle and then flow out, the temperature of the movable milling disc is controlled by adjusting water flow, the temperature of the movable milling disc is controlled to be lower than the material burning temperature, and the problem that the materials are burnt due to milling disc heating is solved.

A serial-parallel conversion device of a three-phase motor winding comprises a connector and a jointer used for paring and being jointed with the connector. The connector is provided with a plurality of binding posts which are respectively electrically connected with each endpoint of a coil of the three-phase motor winding. The jointer is provided with a plurality of connection terminals which are pairing and jointed with the plurality of binding posts. Bonding conductors for electrically connecting two of the plurality of connection terminals are arranged between the plurality of connection terminals. The jointer and the connector are jointed with each other according to a corresponding identifier such that same-phase winding coil of the three-phase motor can be connected in series or in parallel. According to the invention, a motor can operate easily at high and low voltages; the motor has a simple wiring structure; and the problem of cost increase caused by motor-winding specification increase required by motor operation at different voltages or the motor burnout problem caused by wiring errors easily happened due to complex wiring of a single motor can be solved.

The invention relates to the field of control circuits, and discloses a diagnosis system used for a load circuit, and an electric car. The diagnosis system comprises a collection channel switching device and a controller, wherein the collection channel switching device comprises a switching module and a reference place switching module; the switching module is used for conducting or disconnectinga passage between a pressure-division circuit and a circuit where a sampling resistor is positioned; and the reference place switching module is used for switching the conducted passage to different reference places to conduct different collection channels. The controller is used for executing the following operations that: controlling a collection channel switching module to execute a switching operation; according to the voltage of sampling resistors on different sampling channels, determining voltage between different collection points and the corresponding reference place; comparing the determined voltage with the voltage of a battery pack; and according to a comparison result, determining the state of a corresponding relay or fuse. Therefore, different reference places are switched tosolve the problem of misinformation since relays are adhered in a high-voltage collection and diagnosis process through the switching of different reference places, and meanwhile, the problem that acircuit board is burnt out since a relay closing sequence is changed can be solved.

The invention discloses a food processor, which comprises a cup body and a machine head sleeved on the cup body. A motor is arranged in the machine head; the end part of a motor transmission shaft of the motor is provided with crushing blades; the lower end of the machine head is provided with a sanitary protective cover wrapping the motor and the motor transmission shaft; the lower part of the sanity protective cover is provided with a heating part made of a metal material; and a heating device which is in heat-conducting connection with the heating part is arranged in the sanitary protective cover. The food processor has the advantages that: the heater on the machine head is provided with the heating part made of the metal material, and the heating part is provided with a heating device in heat-conducting connection with the heating part, so the heat of the heating device can be dissipated to various parts of the heating part, the heating area is widened, and the problem of burning is solved; parts to be cleaned in the cup body are only the blades and the shaft, so the cleaning is convenient; a turbulator cup is not needed any more, so the cost is saved; and the heating part of the heater is made of the metal material, so the heating part is sanitary and is convenient to clean.

The invention discloses a solar cell preparation method, and belongs to the technical field of solar cell preparation. The method mainly comprises the following steps that cleaning is conducted; texturing is conducted; boron diffusion is conducted; regional ion implantation is conducted, wherein the back is divided into a comb-shaped N type region and a comb-shaped P type region; annealing is conducted; laser etching is conducted, wherein PN junctions around a silicon wafer are removed, so that PN junctions of the front and the back are separated, the front adopts the main cell PN junction, and the back adopts the secondary cell or protection diode PN junction; by means of PECVD, the two sides of the silicon wafer are coated with films, and anti-reflection films are formed; silk-screen printing is conducted on the front and the back of the silicon wafer, and a front electrode, a first back electrode and a second back electrode are formed through sintering. Accordingly, the influence caused by a bypass diode on the solar cell and component sunlight area is avoided; meanwhile, the solar cell shot spot effect problem can be solved, the generating efficiency is improved, the power generation loss is lowered, and the component operating life is prolonged.

The invention discloses a crusher. A radiating groove is formed in the outer wall of a shell, a radiating film is arranged in the radiating groove, radiating efficiency can be improved by matching theradiating groove with the radiating film, bumps are arranged on a hammer, the service time of the hammer can be prolonged, and an anti-winding piece is arranged on a separator and can solve the problem of motor burnout caused by winding. A rubber pad is arranged between a discharging port and a vibrating motor, noise can be reduced in vibration, noise pollution is reduced, and the crusher has theadvantages of high radiating effects and low noise and is wide in prospect.

The invention discloses a control method and device for a parking air conditioner, the air conditioner and a storage medium, and the control method for the parking air conditioner comprises the steps that environment parameters and first operation parameters and second operation parameters of the air conditioner are obtained at a first preset time interval; according to the change values of the environment parameters and the first operation parameters before and after the first preset time interval, the operation state of the air conditioner is determined; and when it is determined that the operation state of the air conditioner is the stable state and the change value of the second operation parameter of the air conditioner before and after the first preset time interval exceeds the preset value, the air conditioner is controlled to give out a fault prompt. According to the technical scheme, the method can judge the running state of the vehicle by detecting the change trend of the environment parameters and the running parameters of the air conditioner, so that the problems that the wind resistance of an outdoor fan is increased due to negative pressure caused by forward running of the vehicle, and the outdoor motor is burnt due to overlarge current due to load increase of the outdoor motor are solved; and the operation reliability of the parking air conditioner is improved.