66results about How to "Implement overheating protection" patented technology

The invention discloses a high-and-low-temperature cycle performance testing device for several kinds of devices. The testing device comprises an outer circulation system, an inner circulation systemand a control system. The outer circulation system and the inner circulation system share one heat exchanger; and a refrigerant circulation passage and a circulation liquid circulation passage are arranged in the heat exchanger. The outer circulation system includes a circulation liquid tank, a three-way valve, and a heat exchange tube that is sleeved on to-be-tested equipment; the outlet of the circulation liquid tank is connected to an inlet of the circulation liquid circulation passage of the heat exchanger; a first inlet of the circulation liquid tank is connected to a first port of the three-way valve and a second inlet of the circulation liquid tank is connected to the heat exchange tube; a second port of the three-way valve is connected to the outlet of the circulation liquid circulation passage of the heat exchanger; and a third port of the three-way valve is connected to the heat exchange tube. According to the high-and-low-temperature cycle performance testing device, the temperature control is carried out precisely; the temperature is stable; the real working conditions can be simulated; and the high-and-low-temperature cycle performance testing device is suitable for high-and-low temperature testing of various devices.

The invention relates to a convertor with switching element temperature protection function. The convertor comprises converting circuit, a radiator, a temperature detecting circuit, a controlling circuit, a radiator allowable temperature computing device, an overheat processing device, a current detecting circuit, a pulse-width modulation (PWM) controlling device, a carrier frequency setting device and a reference value setting device, wherein the radiator allowable temperature computing device comprises a first computing device and a second computing device. The convertor is characterized in that the computing relationship of the first computing device meets the condition. The convertor is capable of easily, accurately and reliably computing the allowable temperature, can realize the overheat protection of the switching elements of a transducer without sacrificing the design redundancy and has small volume and low cost.

The invention discloses a pneumoperitoneum tube device with real-time displaying and temperature adjusting functions. The pneumoperitoneum tube device comprises an air heating device and an air detecting, displaying and adjusting device, wherein the air detecting, displaying and adjusting device is connected with the air heating device; the air heating device is connected with a pneumoperitoneum tube (14) through an air intake tube (12), and is also connected with an air exhaust tube (3) which extends into an abdominal cavity. The pneumoperitoneum tube device has the advantages that the structure is simple, and the convenience in operation and use is realized; the pneumoperitoneum tube device is connected with the air exhaust tube of the pneumoperitoneum device, and the temperature of air which is sent into the abdominal cavity can be monitored, displayed and adjusted in real time, so as to realize the overheat protecting function, guarantee that the temperature of the air entering the abdominal cavity of a patient is the optimum temperature for check and operation, and greatly reduce the complication caused by low temperature of the patient; the accuracy and success rate of check and operation by a doctor are improved, and the necessary auxiliary equipment is provided in the use process of the pneumoperitoneum machine.

The invention discloses vertical efficient fermentation equipment for an organic fertilizer. The equipment comprises a fermentation tank, a motor and heating wires; a first partition board and a second partition board are welded inside the fermentation tank; the first partition board is located above the second partition board; the first separation plate and the second separation plate divide theinterior of the fermentation tank into a temperature change chamber, a homogenization chamber and a temperature preservation chamber from top to bottom; and a first partition valve and a second partition valve are respectively arranged at the middle positions of the first partition board and the second partition board. The equipment provided by the invention is provided with the temperature preservation chamber, the temperature change chamber, the second partition valve, the first partition valve and the homogenization chamber. When fermentation operation is carried out, materials enter a heating stage and a high-temperature stage in the temperature change chamber; the first partition valve is started after the materials reach a high temperature stage; the obtained compost is introduced into the homogenization chamber; turning and secondary heating are carried out in the homogenization chamber; the compost enters a cooling stage; and finally, the second separation valve is started, sothat the compost enters the heat preservation chamber, and enters a heat-preservation stage.

The invention relates to a sound equipment high-temperature protection method and system. The method is based on a sound equipment control system. The sound equipment control system comprises a control center and a plurality of sound equipment. The method comprises the steps that the control center periodically obtains feature information after a power amplifier in each sound device is turned on, wherein the feature information comprises the working temperature and the output power of the power amplifier; the method also includes comparing the working temperature of the power amplifier with a preset temperature threshold value; and when the working temperature of a certain power amplifier is not less than a preset temperature threshold, adjusting the output power of the power amplifier according to a preset power attenuation step length. The invention has the technical effect that the use experience of a user is improved.

The invention discloses a mobile phone wireless charger with an overcharge protection device, which belongs to the field of mobile phone chargers. A mobile phone wireless charger with an overcharge protection device includes a wireless charger body, and a wireless charger body is installed on the bottom of the wireless charger body. Coil, the inner wall of the wireless charger body is fixedly connected with a support plate, and the coil is located inside the support plate, and the inner wall of the support plate above the coil is fixedly connected with a mounting plate, which sends signals to the wireless charger through the mobile phone battery overcharge protection board , so that the gear rotates 90°, and then the through hole rotates to block the magnetic induction line, so that the mobile phone will not generate current, thereby protecting the battery of the mobile phone. At the same time, if the mobile phone is seriously heated during charging, the heat will make the memory metal The sheet changes from a curved phase state to a vertical phase state, so that the control board is pushed into the through hole to reduce the magnetic flux, which can reduce the current in the mobile phone, slow down the charging speed, and protect the overcharge at the same time. Realized overheating protection.

The invention discloses a falling-film high-temperature heat pump system. The falling-film high-temperature heat pump system comprises a double-stage compressor and an oil separator, wherein a low-pressure cylinder inlet, a high-pressure cylinder inlet and a high-pressure output port are arranged in the double-stage compressor; and the oil separator is arranged between a condenser and the double-stage compressor, an input port of the oil separator is communicated with the high-pressure output port, and an exhaust port of the oil separator is communicated with an inlet of the condenser. The falling-film high-temperature heat pump system is characterized by further comprising an auxiliary heat exchanger; the auxiliary heat exchanger is arranged between the condenser and an evaporator; a first inlet of the auxiliary heat exchanger is communicated with an outlet of the condenser; a first outlet of the auxiliary heat exchanger is communicated with an inlet of the evaporator and a second inlet of the auxiliary heat exchanger respectively through respective corresponding electronic expansion valves; and a second outlet of the auxiliary heat exchanger is communicated with the high-pressure cylinder inlet of the double-stage compressor. The falling-film high-temperature heat pump provided by the invention is good in heating effect, low in equipment investment cost, high in heat energy utilization rate, and convenient to use for heating in northern areas with low environment temperatures.

The embodiment of the invention provides a brake resistor overheating protection method and device, a readable storage medium and a controller, and the method comprises the steps: carrying out the integration of the difference between the real-time heat production of a brake resistor and a preset instant heat dissipation amount after the brake resistor is put into operation, and obtaining an accumulated heat value; calculating and obtaiing a temperature rise value, and adding the temperature rise value and the initial temperature value when the brake resistor is put into operation to obtain the actual temperature after the brake resistor is put into operation; and judging whether the actual temperature after the brake resistor is put into operation is greater than a preset temperature threshold, and if so, controlling the brake resistor to quit operation. According to the invention, the difference value between the real-time heat generation amount of the brake resistor and the preset instantaneous heat dissipation amount is integrated, the accumulated heat value is obtained, then the temperature rise value of the brake resistor is determined according to the intrinsic parameters ofthe brake resistor, the actual temperature of the brake resistor after being put into work is obtained, and overheating protection is conducted on the brake resistor on the premise that a temperaturesensor of the brake resistor is not adopted.

The invention provides a phase change heat storage solar water heater with an anti-overheating structure. The phase change heat storage solar water heater comprises a water inflow pipe, a water outflow pipe, a phase change heat storage solar water heater body and a radiator. Heat insulation cladding and multiple parallel vacuum tubes are arranged in the phase change heat storage solar water heater body. Phase change heat storage materials are located in the vacuum tubes. The radiator comprises heat conduction rods and cooling fins. The phase change heat storage solar water heater is characterized in that the parallel vacuum tubes are covered with thermotropic scattering layers; and when the temperature of the phase change heat storage materials is higher than the light-transmitting change threshold temperature of the thermotropic scattering layers, light transmitting of the thermotropic scattering layers is changed into scattering, sunlight radiation is prevented from reaching the vacuum tubes, the sunlight radiation is scattered to the surfaces of the heat conduction rods, the sunlight radiation is absorbed by the heat conduction rods and converted into heat, and the heat is transferred to the cooling fins of the radiator for heat dissipation, so that temperature rise of the phase change heat storage materials is avoided, and overheating protection for the phase change heat storage solar water heater is achieved.

The invention provides a phase-change thermal storage solar water heater with a direct radiating structure.The phase-change thermal storage solar water heater comprises a phase-change thermal storage solar water heater body, a radiating body and phase-change heat exchange tubes, wherein a heat insulation cladding and a plurality of parallel vacuum tubes are arranged in the phase-change thermal storage solar water heater body, a phase-change thermal storage material is arranged in the vacuum tubes, each phase-change heat exchange tube is installed on top of the corresponding vacuum tube, the open end of each phase-change heat exchange tube is embedded into the corresponding vacuum tube, the side wall of each phase-change heat exchange tube is in sealed connection with the wall of the corresponding vacuum tube, and the closed end of each phase-change heat exchange tube is embedded in a heat conduction flat panel of the radiating body; hot gas generated through overheating of the phase-change thermal storage material enters the phase-change heat exchange tubes through the open end of each phase-change heat exchange tube and condenses at the closed end of each phase-change heat exchange tube, heat generated through condensation is transmitted to the radiating body to be dissipated through the closed end of each phase-change heat exchange tube, and liquid generated after condensation flows back to the vacuum tubes along the inner wall of each phase-change heat exchange tube.Through condensation of gas generated after overheating of the interior of the vacuum tube, stable pressure in the vacuum tubes is maintained, and then overheating protection of the phase-change thermal storage solar water heater is achieved.

The invention discloses a motor temperature measurement and overtemperature protection method of a drum washing machine. The motor temperature measurement and overtemperature protection method comprises the following steps of: after receiving speed output, a motor drive controller first outputs a direct-current voltage and stabilizes the direct-current voltage for a certain time; a stator current is acquired by adopting a current sampling circuit; a stator resistance R is calculated by the Ohm's law; and a stator temperature T is calculated with a formula and judging whether overtemperature happens. The motor temperature measurement and overtemperature protection method disclosed by the invention has the advantages of no need of extra equipment, low cost, simple structure, short whole measurement and judgment, high temperature and capability of effectively protecting a motor.

The invention relates to the technical field of the production of lithium ion batteries, and provides a positive temperature coefficient material used for heat safety protection of a lithium ion battery, and an application thereof. The positive temperature coefficient material is prepared through mixing 30-35% by mass of an epoxy resin A adhesive, 30-35% by mass of an epoxy resin B adhesive, 25-35% by mass of Super-P, and 5-8% by mass of Al2O3. The positive temperature coefficient material has the advantages of stable PTC characteristic, small resistance at room temperature, appropriate lift-drag ratio, and good cycle performance, and provides a safe mechanism for the overheat protection of the lithium ion batteries.

The embodiment of the present invention provides a braking resistor overheat protection method, device, readable storage medium and controller, the method includes: after the braking resistor is put into operation, the real-time heat production of the braking resistor and the preset instantaneous heat dissipation The difference is integrated to obtain the accumulated heat value; then the temperature rise value is calculated, and the temperature rise value is added to the initial temperature value when the braking resistor is put into operation to obtain the actual temperature after the braking resistor is put into operation; Whether the actual temperature after work is greater than the preset temperature threshold, if so, control the braking resistor to quit working. The present invention integrates the difference between the real-time heat production of the braking resistor and the preset instantaneous heat dissipation to obtain the accumulated heat value, and then determines the temperature rise value of the braking resistor according to the inherent parameters of the braking resistor, and then obtains the braking The actual temperature after the resistor is put into work realizes the overheating protection of the braking resistor without using the temperature sensor of the braking resistor.