46results about How to "Protection from being burned" patented technology

The invention relates to a wireless-receiving system for detecting microelectronic mechanical microwave frequency and a preparation method thereof. The wireless-receiving system for detecting the microelectronic mechanical microwave frequency has quite simple structure, large measurement magnitude range, no direct-current power consumption and easy integration. In the system for detecting the microelectronic mechanical microwave frequency, gallium arsenide is used as a substrate, wherein a microwave antenna (A), a one-three power splitter (B), a coplanar waveguide transmission line (C), a two-in-one power combiner (D), an MEMS cantilever capacitive microwave power sensor (E) and an MEMS thermoelectric microwave power sensor (F) are designed on the substrate; and then a phase difference between a signal 3 and a signal 2 after the signal 3 passes through the coplanar waveguide transmission line with the length of lambda / 2 can be determined according to a law of cosines. Because the phase difference corresponds to the frequency of the signal, the frequency of the signal can be measured.

The invention provides a washing pump used for pumping water or detergent and matching with automobile windscreen wipers for cleaning windscreens. The washing pump comprises a pump casing, an impeller and a motor, the impeller is contained in the pump casing, the motor drives the impeller and comprises a stator, a rotor and an end cover component, the rotor is mounted to the stator, and the end cover component comprises an end cover, a plurality of electric brushes, a plurality of connection plates and a positive temperature coefficient thermistor. The electric brushes are fixed to the end cover, the connection plates are used for being connected to an external power source, and one of the connection plates is connected to one of the electric brushes through the thermistor. By the aid of the thermistor, resistance of the thermistor can be increased rapidly when the temperature of the thermistor rises to a certain degree, so that only a small current flows through the motor, and the motor is protected from being burnt out.

The invention discloses a suction integrated flame-out protection frying kitchen stove. The suction integrated flame-out protection frying kitchen stove comprises a stove shell, a stove plate is mounted at the top of the stove shell, the upper portion of the stove shell is provided with a hearth, the bottom of the stove shell is provided with an air inlet, a cyclone guide head is mounted in the middle of the lower portion of the stove shell, the top of the cyclone guide head is provided with an air guide hole, a gas collection chamber is formed in the middle of the cyclone guide head, a gas inlet pipe is arranged on the side wall of the gas collection chamber, a mixing cover is arranged at the top of the gas collection chamber, a casing is arranged at the bottom of the mixing cover, the surface of the casing is provided with gas ejection holes, the stove plate is of trilayer structure, a right-cone surface structure is arranged on the upper portion of the inner side of the outer layer, the lower portion of the inner side of the outer layer is cylindrical, and the stove plate is provided with a fire hole ring, a silencing hole ring and a cooling hole ring outwardly by taking the central axis as the center. The outer side of the stove shell is provided with an air baffle chamber, and an ignition needle, a kindling and a flame-out protection needle are assembled in the air baffle chamber. The suction integrated flame-out protection frying kitchen stove is sufficient in gas burning, low in noise and capable of sucking fire from outside to inside to realize flame-out protection and has high popularization and application value.

The invention discloses an automobile windshield cleaning device. The cleaning device comprises a wiper lever, a wiper head, a wiper motor, a snow removal device, a deicing device and an anti-blocking spray device. The wiper motor is installed on the windshield of the automobile. Below the glass, one end of the wiper rod is fixedly installed on the wiper motor, and the other end of the wiper rod is installed with a wiper head. The side wall of the wiper head is attached to the windshield of the car. There is an anti-overforce device between them, a snow removal device for removing snow is provided on the side wall of the wiper head, a deicing device is provided on the side of the wiper head facing the windshield, and a deicing device is provided on the side of the windshield There are also anti-clog sprays below for the supply of washer fluid, which are directed towards the windshield. The invention solves the problem that the traditional windshield wiper is easily damaged and unable to quickly remove ice and snow, and has the characteristics of convenient use and good effect of removing ice and snow.

The invention provides a device for improving the stable operation of liquid crystal equipment, which comprises a waveform generation unit, a comparison unit, a driving control unit, an overcurrent and undervoltage protection unit and a liquid crystal driving unit which are electrically connected in sequence, a level signal output end of the liquid crystal driving unit is connected with a liquid crystal panel unit; the output end of the over-current and under-voltage protection unit is further connected with the input end of the drive control unit. The over-current and under-voltage protectionunit comprises a fifth resistor, an operational amplifier, a comparator, a sixth resistor, an NPN type field effect transistor, a first diode and a seventh resistor. In the power-on and power-off processes of the system, the stable and reliable operation of the system can be realized by enabling the anode end voltage of the comparator to be lower than the cathode end voltage, the working state ofsubsequent units is effectively ensured, and the damage of an abnormal state to the system is reduced; safety and stability of the working state of an over-current and under-voltage state system arerealized by adopting a self-adaptive adjustment and control mode, so that the stability of the liquid crystal display driving equipment is improved.