40results about How to "Won't go out" patented technology

A cooking stove (2) comprising a fan (14) configured to force air into a combustion chamber (8) through air inlets (10) in the walls (4) of the combustion chamber (8). The air inlets (10) are positioned at least 30mm from the base (6) of the combustion chamber (8) and direct the forced air to the headspace above the fuel (20). Clean combustion of high energy fuels can be achieved by the cooking stove (2).

Plasma is generated by using a diluent gas which is decomposed more easily than an etching gas. Then, the etching gas is introduced into a plasma process reaction vessel (101) to increase the flow quantity, and at the same time, the flow quantity of the diluent gas of a substantially the same flow quantity is adjusted to be reduced. Pressure fluctuation in the plasma process reaction vessel (101) is reduced, the gas flow quantity is set at a prescribed value while maintaining the generated plasma, and desired conditions are obtained.

Provided are a plasma treatment device and a plasma treatment method. The plasma treatment device comprises a plurality of concentrically-distributed inductive coupling coils arranged at the top of a reaction cavity and used for plasma treatment of gas in the reaction cavity, a plurality of radio-frequency power sources for respectively providing impulse type radio-frequency signals for the inductive coupling coils, and a control unit connected to the first radio-frequency power source and the second radio-frequency power source at least and used for controlling the impulse type radio-frequency signals formed by shifting of radio-frequency power output by the first radio-frequency power source and the second radio-frequency power source between the high-power output and the low-power output, wherein the inductive coupling coils are opposite to a wafer supporting table, the low-power output is larger than zero, and the control unit enables the impulse type radio-frequency power output by the first radio-frequency power source and the second radio-frequency power source to be independent and adjustable. The plasma distribution in the plasma treatment device is even, and the plasma treatment effect is good.

The invention discloses a resistance lowering device and method for the power cable high-resistance fault point.The resistance lowering device comprises a high-voltage pulse generating part and a direct-current arc maintaining part, wherein the high-voltage pulse generating part and the direct-current arc maintaining part are in parallel.The high-voltage pulse generating part is connected with the direct-current arc maintaining part through a sphere gap, a magnetic switch and a silicon stack; when the resistance lowering device for the power cable high-resistance fault point operates, pulse voltage is firstly output, and a direct current for keeping arc burning is finally output.When the resistance lowering device for the power cable high-resistance fault point operates, a high-voltage pulse firstly acts on a high-resistance fault point of a cable, after the high-resistance fault point of the cable is broken down by the high-voltage pulse and arc discharging is carried out, resistance is decreased to be close to a short circuit, and the direct-current arc maintaining part provides the direct current for the high-resistance fault point to keep arc burning till the high-resistance fault point is subjected to resistance lowering.According to the resistance lowering device and method, under the condition that the power cable is not damaged, main insulation of the cable of the high-resistance fault point can be partly carbonized within ten more seconds to dozens of seconds, and resistance to ground of the fault point is subjected to resistance lowering.

The invention relates to LED illumination lamps, in particular to a forced-cooling high-power LED lamp. The forced-cooling high-power LED lamp comprises a lamp shell, an air inlet area, a heat dissipation area and an air exhaust area, and the air inlet area, the heat dissipation area and the air exhaust area are assembled in the lamp shell. An air inlet separation plate is arranged between the air inlet area and the heat dissipation area, and air inlet separation plate air guide holes are formed in the air inlet separation plate. An air exhaust separation plate is arranged between the heat dissipation area and the air exhaust area, and air exhaust separation plate air guide holes are formed in the air exhaust separation plate. The forced-cooling high-power LED lamp has the advantages of being high in power, light, high in light efficiency, low in junction temperature, high in energy efficiency, low in cost, free of maintenance and capable of being intelligently controlled.

The invention relates to an auxiliary device for repelling mosquitoes, in particular to a safe burning box for mosquito coils. The mosquito-repellent incense safe burning box includes the mosquito-repellent incense burning box body, and the specific design is: the box body of the ordinary mosquito-repellent incense burning box is increased and deepened, and a circular air hole is arranged on the upper part of the box body wall, and the box mouth is made to match the box cover. The ignited mosquito-repellent incense is put into the box body, the lid is covered, and the gas is exchanged through the vent hole to ensure that the mosquito-repellent incense will not be extinguished, and the gas generated by the burning of the mosquito-repellent incense repels mosquitoes. The beneficial effects of the invention are: simple structure, easy to use, safe and hygienic.

The invention relates to a high power LED drive circuit with the emergency function, comprising a rectifying and filtering unit, a reverse excitation unit, a constant current driving unit and an emergency unit, wherein the rectifying and filtering unit is connected with the input end of the LED drive circuit and is used for rectifying and filtering the input alternating current signals; the reverse excitation unit is connected with the rectifying and filtering unit and is used for PWM wave modulation according to load change; the constant current driving unit is connected with the reverse excitation unit and is used for driving the LED to work at constant current; and the emergency unit is connected with the reverse excitation unit and provides power to the constant current driving unit when no alternating current input is detected by detecting the current of the reverse excitation unit. The LED drive circuit is simple and can automatically switch to the emergency power supply so as not to go out even though the mains supply has failure. The leakage current of the cells in the circuit is almost zero, thus ensuring the standby working time of the cells.