33results about How to "Precise control of working temperature" patented technology

The present invention relates to a sensor for gas detection, in particular to a MEMS semiconductor gas sensor, comprising a substrate with a hollow portion and a sensing module formed on the substrate, the sensing module comprising a first insulating layer stacked in sequence, Heating resistance, second insulation layer, test electrode and gas-sensitive layer; Described sensor also comprises control module and temperature detection module, and temperature detection module, heating resistance and test electrode are respectively connected with described control module; Temperature detection module is used for detecting The ambient temperature is fed back to the control module, and the control module adjusts the heating power of the heating resistor according to the ambient temperature, thereby controlling the temperature of the gas sensitive layer to the required working temperature. The sensor reduces or even eliminates the adverse effect on the gas sensitive layer due to ambient temperature changes, thereby ensuring the performance of the gas sensor. The invention also provides a manufacturing method of the gas sensor and a detection method based on the sensor.

The invention discloses a floating vibrator ultrasound salt bath compound cleaning machine and a use method thereof. The floating vibrator ultrasound salt bath compound cleaning machine comprises a sealed machine frame, wherein a thermal insulation fan is arranged at the upper end of the sealed machine frame, a vibrator plate used to movably install an ultrasonic vibrator is vertically arranged on the outer side of the middle of the machine frame, a rinse tank is arranged on the lower portion of the interior of the machine frame, a work platform is horizontally arranged in the rinse tank, a support plate is arranged below the work platform, and a heating coil heated through an electromagnetic heating mode is arranged below the support plate. The floating vibrator ultrasound salt bath compound cleaning machine and the use method thereof have the advantages that 1) by using the electromagnetic heating mode to heat the heating coil, sustainable work can be achieved when fused salt is under 300 degree centigrade, a whole use labor hour is provided, and cleaning efficiency is improved; 2) by using the electromagnetic heating mode, accurate control for work temperature of the floating vibrator ultrasound salt bath compound cleaning machine is achieved, temperature control accuracy for the floating vibrator ultrasound salt bath compound cleaning machine is raised to + / -5 degree centigrade, a heating range from 170 degree centigrade to 300 degree centigrade is achieved, and heating time is reduced to 10min; 3) by using the vibrator plate to fix the ultrasonic vibrator, the ultrasonic vibrator is prevented from falling off due to high temperature.

The invention discloses an intelligent electronic control thermostat, which comprises a casing, one end of the casing is provided with a back cover, and the back cover is detachably connected with the casing to form a transmission cavity, in which a circuit board and a drive Assemblies, pins are provided on the back cover, and the pins are electrically connected to the drive assembly through the circuit board. The housing is provided with an adjustment chamber adjacent to the transmission chamber. The adjustment chamber is rotationally connected with rotary valve 1 and rotary valve 2, and the rotary valve One end is provided with a rotating shaft, one end of the rotating shaft runs through the regulating chamber and is connected to the drive assembly, and the part of the rotating shaft passing through the regulating chamber is sealed and rotated with the regulating chamber. The rotary valve one is connected to the rotary valve two through gear transmission. The engine liquid supply pipe, the gearbox return pipe and the engine return pipe, the engine liquid supply pipe is connected with the engine return pipe through the rotary valve one, and the engine liquid supply pipe is connected with the gearbox return pipe through the rotary valve two. The beneficial effect of the invention is that the working temperature of the engine can be precisely controlled.

The present invention relates to a semiconductor power device and a power processing assembly for the semiconductor power device, wherein the power processing assembly includes an insulating substrate; a plurality of chips arranged on the insulating substrate; A sensor body located under the selected chip, and an electrical connector connected to the sensor body and passing through the insulating substrate. The power processing component can reduce the risk of damage to the temperature sensor due to short-circuit arc breakdown, and at the same time solve the problem of a large error between the temperature detection result of the temperature sensor and the actual operating temperature of the selected chip, which is beneficial to the operating temperature of the chip. Precise control.

The present invention proposes a drying system, an air conditioner and a working mode switching method, wherein the drying system includes: an outdoor heat exchanger, a first indoor heat exchanger, a second indoor heat exchanger and a compressor ;Three-way solenoid valve, the three-way solenoid valve has three ports of the first end, the second end and the third end, wherein, the first end is connected to the compressor through the four-way valve, and the second end is connected to the outdoor heat exchanger, The third end is connected to the first indoor heat exchanger; the controller, connected to the three-way solenoid valve, is used to switch between the three ports according to the received mode adjustment command, so as to adjust the working mode of the air conditioner, wherein , The working modes include preheating mode, temperature control mode and drying and dehumidification mode. Through the above technical solution, it replaces the solution of air preheating by electric heating in the related art, saves energy consumption, realizes the automatic control of heat pump drying, and can greatly save energy and reduce emission.

The invention discloses a precise temperature control system with an all-weather wide temperature zone, which is characterized in that the system comprises a cold and hot source module, a coolant loop and a measurement and control system, wherein the cold and hot source module is composed of a mechanical refrigeration unit, an air cooling refrigeration unit and an electric heating unit; the coolant loop takes a liquid pump as a drive source for coolant recycle, the coolant in a liquid accumulator passes through the liquid pump, a heat sink with a microchannel and a three-way valve in turn, passes through one of two parallel branches at the outlet end of the three-way valve, and then flows back to the liquid accumulator through an electric heating module of a main loop, and one path of thetwo parallel branches is a mechanical refrigeration unit channel passing through the outlet A of the three-way valve, and the other path is an air cooling refrigeration unit channel passing through the outlet B of the three-way valve; and in the system, the wide temperature zone within a range of minus 60 DEG C-70 DEG C is divided into a refrigeration zone, an air cooling zone and a heat supply zone, and the measurement and control system carries out zone control to enable the temperature control system to run in a refrigeration mode, an air cooling mode and a heat supply mode according to the real-time running states. The temperature control system is used for precise temperature control of all-weather wide temperature zone operating environment.

The invention relates to a temperature control device of an electronic smoking device. The temperature control device comprises a metal heating sheet which is used for heating cigarettes and a control device body which performs temperature control over the heating sheet, and the control device body adjusts the temperature of the heating sheet by collecting real-time resistance values of the heating sheet; the control device body comprises a power driving unit, an analog-digital conversion unit, a control unit and a real-time resistance detection unit; the power driving unit is electrically connected with a power source and the heating sheet separately, the control unit is electrically connected with the power driving unit and the real-time resistance detection unit separately, and the analog-digital conversion unit is used for converting a simulating signal output by the real-time resistance detection unit into a digital signal and then transmitting the digital signal to the control unit; the real-time resistance detection unit is used for detecting real time resistance of the heating sheet, and the control unit adjusts the output power of the power driving unit through the real-time resistance values of the heating sheet. The temperature control device of the electronic smoking device with the structure has the advantages of being accurate in temperature control, and convenient to use.

The invention belongs to the field of high-pressure reaction devices and particularly relates to a pressure-controllable high-pressure hydration reaction device comprising a compression gas storage tank (1), a booster jar (2) and a high-pressure reactor (24); a gas outlet of the compression gas storage tank (1) is communicated with a boosting gas inlet (9) of the booster jar (2); a boosting gas outlet (10) of the booster jar (2) is communicated with a gas inlet of the high-pressure reactor (24); the high-pressure reactor (24) comprises a magnetic stirring apparatus, a pressure-proof reaction tank body (23), a cooling pipe (17) and a reactor heating furnace wire (22); the cooling pipe (17) is arranged in the pressure-proof reaction tank body (23); the working end of the magnetic stirring apparatus is placed in the cooling pipe (17); and the booster jar (2) comprises a sealed metal pressure-proof tank body (4) and a boosting heating furnace wire (3). The pressure-controllable high-pressure water hydration reaction device can be used for completely realizing effective control on the pressure in the reaction process and increasing the efficiency and the safety of a hydration reaction process under the conditions of high temperature and high pressure.

The circuit device includes power supply circuit, temperature control circuit, blast motor, and heating element. The temperature control circuit includes single chip, power control circuit, temperature sensing and amplifying circuit (TSAC), button circuit for setting up temperature, LCD circuit for temperature, and difference value comparator circuit (DVCC). Based on signal of temperature settingvalue from the button circuit for setting up temperature, the single chip controls heating power of heating element, and sends signal of temperature setting value to LCD circuit for temperature to display temperature setting value. Comparing signal of working temperature of heating element measured by TSAC with temperature control signal from single chip, DVCC carries out comparison of differencevalue to generate signal of difference value.

The application discloses a multi-temperature-region sapphire microwave source system and a control method thereof, so that a problem of temperature control of a sapphire microwave source can be solved. The system comprises a low-temperature device, microwave chambers, hot plates, a temperature control module and a frequency meter. The microwave chambers and the hot plates are arranged inside the low-temperature device and the rest of components are arranged outside the low-temperature device. A plurality of hot plates are arranged and include plate-like parts, heating wires and thermistors. A plurality of microwave chambers are arranged; and each microwave chamber is at least in contact with one plate-like part fixedly. The temperature control module connected with the thermistors and the heating wires is used for controlling the operating temperatures of the microwave chambers. The frequency meter measures the frequencies of output signals of the microwave chambers. In addition, the control method is as follows: for each microwave chamber, the operating temperature is changed, the frequency is measured, and the difference of the frequency is calculated; a temperature inflection point is searched; and the operating temperatures of the microwave chambers are kept to be at the temperature inflection point. Therefore, each microwave chamber is at the temperature inflection point and a high-index microwave signal is outputted.

The invention relates to a precise temperature control device and a precise temperature control method of a star sensor. The control method comprises the following steps of (S1) an instruction module analyzes and outputs instruction signals, and a temperature acquisition module acquires working temperature of a detector of the star sensor in real time; (S2) a PID (Proportion Integration Differentiation) control module receives the working temperature and the analyzed instruction signals, carries out PID operation by an anti-fuse FPGA (Field Programmable Gate Array) and outputs PID control quantity; (S3) a current acquisition module acquires working current of a cooler in real time and outputs current abnormality signals; (S4) a PWM (Pulse-Width Modulation) module receives the PID control quantity, carries out PWM operation by the anti-fuse FPGA, outputs pulse modulation signals to control the cooler for cooling, stop the cooler according to the current abnormality signals or control the cooler to start and stop according to the analyzed instruction signals. The precise temperature control device and the control method have the advantages that the anti-fuse FPGA is adopted for realizing precise control of the working temperature of the star sensor, so that temperature guarantee is provided for the accuracy of the star sensor, the requirements for low power consumption and high cooling efficiency are met, and the service life of the star sensor is prolonged.