109results about How to "Avoid Burnout Situations" patented technology

The invention provides a control method for an air conditioner. The control method comprises the steps that 1, running currents of the air conditioner are detected in real time; 2, whether a current current value is smaller than a first current threshold value or not is judged, if yes, the step 3 is conducted, and if not, a compressor is stopped; 3, whether the current current value is smaller than a second current threshold value or not is judged, if yes, the step 4 is conducted, and if not, the running frequency of the compressor is decreased; 4, whether the current current value is smallerthan a third current threshold value or not is judged, if yes, the compressor continues to normally work, and if not, the compressor keeps the current running frequency and prohibits frequency increasing. According to the control method for the air conditioner, when currents are abnormal in the running process of the air conditioner, the compressor is controlled by setting a current threshold value on the running currents of the air conditioner according to the condition that an actual current value reaches the current threshold value, the protection effect on the air conditioner currents is achieved, therefore, the condition that the air conditioner is burnt out due to the fact that the currents suddenly fail is avoided, air conditioner running is guaranteed to the maximum limit when thecurrents are abnormal, and use can not be influenced for users.

The invention provides a high-power double-clad optical fiber cladding light stripper device and a manufacturing method. The light stripper device comprises double-clad optical fibers (116), an optical module (111), a fixing material (113) and water-cooled tubes (117 and 118). The double-clad optical fibers (116) penetrate through the optical module (111) and the fixing material (113). The optical module (111) is arranged in the fixing material (113). The water-cooled tube (117) is installed on the lower portion of the fixing material (113). The optical module (111) is of a three-layer waveguide structure. A heat dissipating material is adopted as the fixing material (113). According to the device, double-clad optical fiber inner cladding is corroded to form an opposite conical structure, and placed into the waveguide structure manufactured with semi-hollow cylinders and semi-solid cylinders made of a transparent material so as to leak light, the light leaked by the inner cladding is leaked uniformly in the length direction of the optical fibers, power density of the light and heat is reduced, and the situation that because light leakage is excessively concentrated, optical gel is burned out can be avoided.

The invention relates to a high-power optical fiber cladding power stripper device. The high-power optical fiber cladding power stripper device comprises a double-cladding optical fiber (1), an optical module (2), an upper cover plate (3), a water cooling base (4) and a water cooling tube (5); the double-cladding optical fiber (1) penetrates through the optical module (2) and the water cooling base (4), the optical module (2) is arranged in the water cooling base (4), the upper portion of the water cooling base (4) is packaged through the upper cover plate (3) made of materials with the good radiating performance, and the water cooling tube (5) is installed at the lower portion of the water cooling base (4). According to the high-power optical fiber cladding power stripper device, an inner cladding of the optical fiber is stripped to be in a step type and is coated with high-refraction-index optical gel with different refraction indexes, light leaked through the inner cladding is leaked in a relatively-even mode along the length of the optical fiber, a three-layer-optical-waveguide optical module structure is constructed, and the light leaked through the inner cladding can be guided out through optical waveguides. In addition, heat is taken away in time through circulation water, and a stripper is prevented from being excessively high in temperature.

The invention relates to an oil returning control method for a direct current frequency conversion variable refrigerant flow air conditioner. The method comprises the following steps: (1) arranging anoil returning temperature sensor on an oil returning pipeline of a compressor; (2) setting system parameters; and (3) judging whether a system needs the oil returning, wherein the system enters an oil returning mode for operation if the system needs oil returning, and the oil returning is finished after the system enters the oil returning and operates for a period of time if the halt protection or frequency reduction protection of the system is not triggered in the oil returning process. The oil returning control method has the advantages that the oil returning of the system can be effectively ensured when the direct current frequency conversion variable refrigerant flow air conditioner continues to stably operate at high frequency under the mode of high temperature refrigeration, such that the condition that the compressor is burnt out due to oil lack can be effectively avoided, and the damage to the system can be effectively avoided.

An overheat protection-circuit consists of the first logic circuit for receiving voltage detection signal and overheat signal and for outputting one first logic signal after calculation, memory circuit for receiving said first logic signal and control signal and for outputting latch signal after calculation, the second logic circuit for receiving said latch signal and control signal and for outputting a power supply control signal after calculation, and power supplier for deciding not to output an operation voltage according to said power supply control signal.

The embodiment of the invention discloses an SIM (Subscriber Identity Module) card base module for inserting an SIM card and a mobile communication terminal equipped with the SIM card base module. The SIM card base module comprises a base plate, a limiting piece and a detecting unit, wherein the base plate is provided with a circuit which is electrically connected with the SIM card and a signal input end for inputting signals; the limiting piece and the base plate are connected to form a clamping groove for containing the SIM card; the detecting unit is adjacent to the SIM card and is used for being in contact with the signal input end to generate a detection signal before the SIM card is pulled out; and read-write operation of the SIM card is stopped according to the detection signal. According to the embodiment of the invention, before the SIM card is taken out, the detection signal is sent to the signal input end of the base plate by the detection unit to stop the read-write operation on the SIM card, so that the condition that the SIM card is burnt out when the SIM card is taken out is avoided.

The invention relates to a short circuit caution device of a solar panel, in particular to a caution device for preventing the solar panel from short circuit. The caution device comprises a first solar battery pack, wherein the first solar battery pack comprises at least two solar battery pieces which are connected in series in the same direction. The caution device has the characteristics that a first diode group and a first indicating lamp are connected in parallel at two ends of the first solar battery pack, and the first diode group consists of a first diode and a second diode which are connected in parallel. The anode and the cathode of the first diode group are respectively connected with the cathode and the anode of the first solar battery pack. The caution device can be used for preventing the solar panel from short circuit.

The invention discloses a charger protection circuit which is connected between an anode output end of a charger and an AC / DC conversion controller. The charger protection circuit comprises a switch tube Q1, a voltage source VCC, a diode D4, a load R and a load R4, wherein the voltage source VCC and the anode of the diode D4 are electrically connected with a collector of the switch tube Q1 respectively, one end of the load R and one end of the load R4 are electrically connected with a base of the switch tube Q1 respectively, the other end of the load R4 and an emitter of the switch tube Q1 are grounded, the other end of the load R is used for connecting with the anode output end of the charger, and the cathode of the diode D4 is used for connecting with the AC / DC conversion controller of the charger. By adopting the technical scheme, the charger protection circuit not only realizes short circuit protection of the charger, but also effectively avoids damage to a power battery.

Provided is a power supply aging test circuit, relating to the power supply aging test technical field. The power supply aging test circuit comprises a square-wave generator; the input terminal of the square-wave generator is in connection with an RC oscillation circuit, and the output terminal of the square-wave generator is in connection with a control circuit; the control circuit comprises a silicon controlled rectifier diode; if the silicon controlled rectifier diode is conducted, the voltage inputted to the power supply to be detected is conducted to the power supply to be detected; if the silicon controlled rectifier diode is cut off, the voltage inputted to the power supply to be detected is cut off from the power supply to be detected. Accordingly, through the square-wave generator and the silicon controlled rectifier diode, the on and off control of the input voltage in a power supply aging test can be realized, thereby avoiding partial burning of a switching power supply in an input rectification portion possibly caused by using an alternating current contactor; the power supply aging test circuit has a simple structure, and can safely perform power supply aging test, and cause less damage to a power supply in test.

The invention belongs to the technical field of hot-rolled seamless steel pipe units and particularly relates to a thin-oil lubrication warning controlling device for a gear box. The device comprises the gear box and a motor matched with the gear box, wherein an oil inlet and an oil outlet are formed in the gear box and are connected with an oil pipe, a thin oil pump is connected to the oil pipe, a pressure sensor for collecting a thin oil pressure signal is mounted on the oil pipe and close to the oil inlet of the gear box, the pressure sensor is connected with a programmable controller, and the programmable controller is connected with the motor and a warning flashing lamp and is used for controlling the motor matched with the gear box as well as the warning flashing lamp after comparing the collected thin oil pressure signal with a thin oil pressure value. According to the thin-oil-lubrication warning-controlling device, situations that gears and bearings are damaged due to the oil starvation of the gear box can be reduced, so that the production efficiency is increased.

The invention discloses an alternating current fan control circuit. The circuit comprises a rectification circuit, a filter circuit, an electromagnetic interference circuit, a direct current-direct current (DC-DC) switching circuit, a step-down circuit and a fan drive circuit, wherein the rectification circuit is used for converting an alternating current power supply of a power grid to a pulse direct-current power supply, the filter circuit is arranged on an output stage of the rectification circuit and used for filtering a harmonic voltage generated by the rectification circuit, the electromagnetic interference circuit is disposed on an input stage of the rectification circuit and used for preventing the alternating current fan control circuit from interfering with other circuits during operation, the DC-DC switching circuit is mounted on an output stage of the filter circuit and used for converting the pulse direct-current power supply output by the rectification circuit and the filter circuit to a first direct current power supply, the step-down circuit is used for performing a voltage stabilization to the first direct current power supply output by the DC-DC switching circuit and outputting a second direct current power supply, and the fan drive circuit is used for driving a fan to forwardly rotate or reversely rotate. The alternating current fan control circuit is stable and reliable during operating.

The invention relates to a zinc series phosphating solution for aluminum alloys. The zinc series phosphating solution comprises the following components: Zn<2+> 15-18 g / l, PO4<3-> 15-20 g / l, Cu<2+> 0.001-0.003 g / l,Fe<2+> 1-2.5 g / l, F<-> l-2.5 g / l, Ni<2+> 0.5-1.5 g / l. The components are mixed with deionized water so as to prepare the zinc series phosphating solution. The phosphating solution provided by the invention doesn't employ chromium so as to avoid the problem of chromium poison to environment and people, works at a low temperature (35-45 DEG C) so as to save energy, produces few sediments during working, can form a uniform and compact phosphating film with favorable corrosion resistance and the effects such as antifriction and lubrication at a high speed, and increases the bonding strength of a synthetic coating and an aluminum alloy substrate. Besides, the components of the phosphating solution are simple, and the raw materials are easy to purchase.

The invention discloses an IGBT drive circuit, and an electromagnetic induction heating device and method. The IGBT drive circuit comprises an operating module. The operating module comprises an IGBT. The IGBT drive circuit further comprises a control module. The control module is used for alternately outputting a plurality of first on signals to the IGBT before current of the IGBT is smaller than a preset value, and alternately outputting second on signals with fixed on time to the IGBT after the current of the IGBT is smaller than the preset value. On time of the first on signals is smaller than that of the second signals. Burnout of the IGBT caused by high short-circuit current flowing by the IGBT can be avoided, and thus the IGBT is reliably and effectively protected, the service life of the IGBT is prolonged and normal operation of the IGBT is ensured.

The invention relates to a wireless charging remote control and a charger which aim at solving the technical problem in the prior art that a high frequency signal transmission mode is adopted to conduct wireless charging, the power conversion rate is low, and the charging time is long. The wireless charging remote control comprises a key, a microprocessing unit, an infrared transmitting unit and a power storage unit. The key and the infrared transmitting unit are connected with the microprocessing unit, and the power storage unit is connected with the microprocessing unit and the infrared transmitting unit. The wireless charging remote control further comprises a wireless charging receiving unit connected with the power storage unit and used for converting an electromagnetic field into current and charging the power storage unit through the current, and the wireless charging receiving unit comprises at least one group of coils. The wireless charging remote control has the advantages of utilizing the coils to convert the electromagnetic field into current, improving the power conversion rate, reducing the charging time and meanwhile reducing cost.

The invention discloses a liquid flow frame of an all-vanadium redox flow battery. The liquid flow frame comprises a hollow frame body, the frame body is symmetrically provided with a liquid inlet flow channel and a liquid outlet flow channel, and the liquid inlet flow channel comprises a liquid inlet main flow channel body, a liquid inlet first-grade buffer flow channel body, a liquid inlet first-grade branch flow channel body, a liquid inlet second-grade branch flow channel body and a liquid inlet second-grade branch flow channel body which are communicated in sequence; the liquid outlet flow channel comprises a liquid outlet main flow channel body, a liquid outlet first-grade buffer flow channel body, a liquid outlet first-grade branch flow channel body, a liquid outlet second-grade branch flow channel body and a liquid outlet second-grade branch flow channel body which are communicated in sequence; the liquid inlet first-grade branch flow channel body and the liquid outlet first-grade branch flow channel body are both evenly provided with multiple parallelogram protrusions for forming inclined electrolyte flow channels, and the liquid inlet second-grade branch flow channel bodyand the liquid outlet second-grade branch flow channel body are both evenly provided with rectangular protrusions for forming electrolyte flow channels. An electrolyte can be more evenly and uniformly distributed in the middle of the liquid flow frame, which helps to improve the energy efficiency of the vanadium battery and the current efficiency.

The invention provides a motor control method, a motor control circuit and a food processor. The motor control method comprises the steps of detecting the zero-crossing point of AC voltage of an AC power supply, outputting a trigger pulse after a delay time starting when the zero-crossing pint of the AC voltage is detected, and triggering a switching device connected with the motor to be conducted. At least two trigger pulses outputted after different delay times are different in pulse width.

The invention belongs to the field of machines and particularly relates to an automatic torsion adjusting system which is primarily applied to technologies of automatic torsion adjusting gear systems for power generators, motors and the like. The automatic torsion adjusting system comprises a force input shaft, a torsion adjusting part and a force output shaft, wherein the force input shaft is connected with one end of the torsion adjusting part, and the force output shaft is connected with the other end of the torsion adjusting part; the length of the force input shaft is changed according to the stress; a conical face with the wide front portion and the narrow rear portion is arranged in the middle of the force output shaft; the torsion adjusting part is provided with a cam sharing the same slope with the conical face of the force output shaft; the cam is in contact with the force output shaft and drives the force output shaft to rotate; and the contact area between the cam and the force output shaft is changed along with the length changes of the force input shaft.

The invention discloses a direct-current fan failure monitoring system. When a voltage signal, detected by a signal control circuit and output by a current-to-voltage circuit, corresponding to a direct-current fan exceeds the direct-current fan set range, a control signal is output to control a switching element to be switched off, a power supply circuit of the direct-current fan is cut off, and therefore power cannot be supplied to the direct-current fan; when actual current, passing through the direct-current fan power supply circuit, of a protective pipe is larger than the maximum value ofa normal work current of the direct-current fan, fusing is carried out to cut off the direct-current fan power supply circuit; when the direct-current fan is closed, a diode provides a current discharge path, and the direct-current fan is protected against damage; the phenomenon that in the prior art, a control module processes signal delay, the fan is closed, the fan is burnt out, and unnecessaryeconomic losses are caused is avoided, through combination of a voltage comparison circuit and a signal processing module, the work state of the current direct-current fan can be displayed, a workercan conveniently take measures in time, and the direct-current fan is further prevented from being burnt out.

The invention provides a power-off protection system for an electronic product drop process. The system comprises an acceleration sensor, wherein the acceleration sensor is connected with an information processing circuit; the processing information of the information processing circuit is controlled by a control circuit; and the acceleration sensor, the information processing circuit and the control circuit are all arranged in an electronic product. Compared with the prior art, the power-off protection system for the electronic product drop process can sense whether the electronic product is in a dropping state or not and cut off the power before the electronic product touches the ground so as to protect the internal circuit of the electronic product from further burnout.

The invention belongs to the technical field of generator sets, and particularly relates to a magnetic suspension multi-layer wind wheel generator set. The magnetic suspension multi-layer wind wheel generator set is easy to mount, not prone to damage, capable of improving the power generation efficiency, and sufficiently using the wind energy for power generating, free of wind direction and wind speed limiting, capable of achieving automatic wind unloading for deceleration, free of use site limiting, and easy to maintain. The magnetic suspension multi-layer wind wheel generator set comprises atower column, a tower rod, a second permanent magnet ring, a first ball and the like; the tower column is columnar, a whole shell of the tower column is protected with a fine steel wire as a protection net, the top of the tower column is fixedly connected with a top layer protection cover, the top layer protection cover communicates with the top of the tower column, and a tower rod is arranged inthe tower column. The effects of being easy to mount, not prone to damage, capable of improving the power generation efficiency, and sufficiently using the wind energy for power generating, free of wind direction and wind speed limiting, capable of achieving automatic wind unloading for deceleration, free of use site limiting, and easy to maintain are achieved.

The invention discloses a compressor and a heat pump system. The compressor is suitable for being applied to the heat pump system; the heat pump system is provided with an oil return device connected with the compressor and a control device used for controlling the oil return device; the compressor is provided with a detection part used for detecting the height of the oil level in a cavity, and the control device is suitable for being electrically connected with the detection part so as to control oil return according to a detection result. According to the compressor in the embodiment of the invention, the detection part capable of detecting the oil level in the compressor is arranged, therefore, the purpose of controlling oil return according to the detection result of the detection part is achieved, it is guaranteed that the compressor always has sufficient lubricating oil, and the condition of abnormal wear or compressor burning caused by oil shortage is avoided.

The invention provides a locomotive resistance box comprising a box body, a ventilation machine arranged in the box body, and more than two serial-connected resistance belts. The resistance belts are distributed in a snake shape, so as to form resistance surfaces with seams, and the resistance surfaces are parallel to one another; the ventilation machine is fixedly arranged at one side (close to the resistance surface at the outermost side and is far from the other resistance surfaces) of the box body; the air outlet direction of the ventilation machine is vertical to a plane of the resistance surfaces; and the resistance values of the resistance belts are gradually reduced in the direction from the resistance surface which is close to the ventilation machine to the resistance surface which is far from the ventilation machine. The locomotive resistance box provided by the invention has a simple, reasonable and compact structure, can solve the various defects of the conventional resistance box, and has the advantages of difficulty in burning, long service life, and capacity of reducing the material using amount of the resistance belts, and the size of the resistance box can be reduced.

The invention relates to a chassis / earthing switch control circuit of a medium-voltage switch cabinet. A main processor circuit is connected with one path of monitoring protection circuit, wherein the monitoring protection circuit comprises an A / D conversion circuit and a current sensor; the current sensor is used for collecting a motor current; the current sensor is connected with the main processor circuit through the A / D conversion circuit; the other path of monitoring protection circuit is also arranged and comprises a logic processing circuit, an isolating circuit and a corresponding detection circuit; the detection circuit is connected with a drive circuit and is used for forming corresponding logic signals according to output of the drive circuit and feeding these logic signals into the logic processing circuit through the isolating circuit; the logic processing circuit carries out judgment according to the input logic signals; and the judgment result is also used for generating a trigger control signal. According to the control circuit provided by the invention, the monitoring protection circuit is divided into two paths; and the motor condition is comprehensively analyzed, so that the reliability is greatly improved.

The embodiment of the invention discloses a system and method for eliminating electrical fast transient / burst interference, belongs to the technical field of electromagnetic anti-interference of servers, and the system comprises an EFT signal generator, an EFT signal coupling network, an inhibition module and an ITE equipment test module, the inhibition module comprises a connector unit, a TVS protection unit, a resonance unit and a switch unit which are connected in sequence, the switch unit is further connected with a control unit and a temperature detection unit in sequence, the connector unit is used for transmitting an electrical fast transient / burst signal, the TVS protection unit and the resonance unit sequentially perform voltage reduction on the electrical fast transient / burst signal output by the connector unit, the temperature detection unit is used for detecting the chip temperature of the ITE equipment test module, the control unit is used for receiving the temperature information detected by the temperature detection unit and controlling the switch state of the switch unit, and compared with the prior art, the problem that the chip of the ITE equipment test module isbroken down due to over-high voltage or burnt out due to too high temperature is avoided.

The invention discloses an intelligent purification and air supply unit. The intelligent purification and air supply unit is characterized by comprising a cylindrical case and a controller, wherein an air inlet and an air outlet are formed in the outer end and the inner end of the case respectively, and a primary filter and a high efficiency filter are arranged at the air inlet and the air outlet respectively; an induced draft fan is arranged between the primary filter and the high efficiency filter, an air inlet of the induced draft fan communicates with the primary filter, and an air outlet of the induced draft fan communicates with the high efficiency filter; a trumpet-shaped short diversion tube is connected to the air inlet of the induced draught fan, a micro-differential pressure probe is arranged at each of two ends of the short diversion tube, and the two micro-differential pressure probes and the induced draft fan are connected with the controller through wires. By means of the intelligent purification and air supply unit, a filter element can be replaced timely, the product quality of filled drinks is guaranteed; the intelligent purification and air supply unit is applicable to places such as electronics, biomedicine, drink filling and the like with higher requirements for environment air quality.

The invention relates to the field of intelligent machines, in particular to an intelligent mosquito-repellent incense coil capable of being automatically ignited. The intelligent mosquito-repellent incense coil comprises a coil wall and an ash receiving box; two or more material carriers matched with mosquito-repellent incense are stacked in the center inside the coil wall, and an ignition devicematched with the mosquito-repellent incense on the material carriers is arranged on the coil wall; the ignition device comprises an ignition base, a vertical heat insulation base is arranged on the ignition base, an ignition heating resistor is arranged on the heat insulation base, the other side of the heat insulation base is provided with a battery holder connected with the ignition heating resistor, an upper cover of the battery holder is a battery opening and closing cover, a battery opening and closing handle is arranged on the battery opening and closing cover, and a controller and a time relay and a light sensor connected with the controller are arranged on the ignition base; signals of the time relay and the light sensor are matched with the controller for controlling work of theignition heating resistor, mosquito-repellent incense ignition can be performed automatically at a fixed point at night, the phenomena that two pieces of mosquito-repellent incense are ignited at thesame time and mosquito-repellent incense is burned out at night are avoided, and intelligent mosquito-repellent incense combustion is achieved.

The invention discloses a water testing device for displaying a flushing function of a toilet lid, comprising a water storage tank, a circulating water pump, a water inlet pipe and a water outlet pipe, wherein the water storage tank can be arranged below the toilet lid so as to be connected with the toilet lid; one end of the water inlet pipe is connected with a water inlet of the circulating water pump, and the other end of the water inlet pipe is communicated with the water storage tank; and one end of the water outlet pipe is connected with a water outlet of the circulating water pump, and the other end of the water outlet pipe is communicated with a spray pipe of the toilet lid. According to the water testing device, the water storage tank is used as a water storage container and a supporting platform of the toilet lid with the flushing function, combined with the circulating water pump and matched with the water inlet pipe and the water outlet pipe, so that water supply circulation is realized, and the problems related to supporting and water supply existing when the toilet lid with the flushing function and particularly an intelligent toilet lid are displayed are solved; and in addition, the water testing device has the characteristics of small appearance, convenience in carrying and mounting, low water consumption and the like.

The invention relates to a novel air seal device comprising a device body. A cylindrical material cavity is formed in the device body; a feeding inlet and a discharging outlet are formed in the upperend and the lower end of the device body correspondingly; the left portion and the right portion of the device body are each provided with an opening communicating with the material cavity; a left endcover and a right end cover are arranged at the two openings correspondingly; an impeller shaft is horizontally arranged in the material cavity; one end of the impeller shaft is rotatably connected into a mounting groove formed in the inner side wall of the left end cover, and the other end of the impeller shaft penetrates through a through hole in the right end cover and then is in transmissionconnection with a belt gap bridge transmission device; the belt gap bridge transmission device is electrically connected with a control device; and an impeller is arranged on the impeller shaft, and the side, close to the inner wall of the material cavity, of the impeller is provided with a scraping device. The novel air seal device has the beneficial effects that the structure is simple, the device body and the end covers are arranged in a split mode, and thus disassembly, assembly and cleaning are very convenient; and meanwhile, a motor and the impeller shaft are in transmission connection through a belt, after a discharging channel is clamped, the motor can still rotate, the situation of burnout of the motor is avoided, the service life of the motor is prolonged, and the cost is saved.