52results about How to "Control wind speed" patented technology

The invention relates to an intelligent variable frequency electric hair dryer and a control system and method thereof. The intelligent variable frequency electric hair dryer comprises a temperature detection module, a temperature regulating module, an air speed regulating module, a main control module and a power module. The temperature detection module detects temperature sensing signals on the surface of the human body hair in real time and converts the temperature sensing signals into electric signals. The main control module reads corresponding temperature values according to the electric signals, compares the temperature values with a preset temperature threshold value, and adaptively controls the working state of the temperature regulating module and the working state of the air speed regulating module according to comparison results to maintain the temperature of the surface of the human body hair to be constantly around the preset temperature threshold value. Temperature data of the surface of the hair is collected through the temperature detection module, on one hand, the output temperature and air speed of the electric hair dryer are controlled according to the collected data, one the other hand, the data is transmitted to a mobile terminal through a WIFI, and the temperature and air speed are controlled through the mobile terminal so that healthy, safe and intelligent drying can be achieved for all users through sharing.

The invention provides a user comfort-based energy-saving control method in a refrigerating mode of an air conditioner. Through monitoring of indoor and outdoor temperature and based on the temperature difference between indoor temperature and set temperature of an energy-saving control mode, the method can control the operation frequency of an inverter compressor, the opening degree of an electronic expansion valve and the wind speed of indoor and outdoor fans more accurately, so that the operation power of a whole air conditioner can be reduced as much as possible on the premise that the user comfort is guaranteed.

The patent refers to the field of 'pumps for elastic fluids'. The invention discloses an intelligent variable ventilation system. The intelligent variable ventilation system comprises a control module, a frequency conversion module, a fan, a human-computer interaction interface and a signal acquisition module, wherein the human-computer interaction interface, the control module, the frequency conversion module and the fan are connected with one another sequentially; and the signal acquisition module is connected with the control module and the human-computer interaction interface respectively. The invention also discloses a method for realizing the intelligent variable ventilation system. In the method, the control module performs intelligent variable control on the rotating speed of the fan by a fuzzy control method according to signals acquired by the signal acquisition module, so that different ventilation rates are obtained. The invention also discloses a novel fruit and vegetable transport case. The novel fruit and vegetable transport case comprises the fan, a case shell and an internal case structure, wherein the case shell consists of an upper panel, a lower panel, a left panel, a right panel, a front panel and a rear panel; and the internal case structure comprises an air return duct, a fan mounting plate and an open pore partition board. The invention has the advantages of simple structure, convenience of processing, high intellectualization and the like, and contributes to improving the freshness-retaining quality of fruits and vegetables.

The present invention relates to the technical field of control of fume exhaust parts in household kitchen, and especially relates to a range hood intelligent control system. The system includes a one-key type touch control device, a main control module, a rotating speed control module, a PWM control module and a time setting module. The main control module is in signal connection with the one-key type touch control device, and is used for receiving operation command from the one-key type touch control device; the main control module is in control connection with the rotating speed control module, the PWM control module and the time setting module; and the rotating speed control module and the PWM control module are respectively electrically connected to a DC motor and a lighting lamp. The one-key type touch control device is provided with a switch button, a time setting button, a illumination brightness touch button, a touch sliding control strip and a display screen. Compared with the prior art, the invention has the advantages of simple structure, convenient operation, various control functions and good appearance. The invention also provides a one-key type range hood with the intelligent control system.

The invention discloses an air circulation system and an air circulation method of FPSO, which are used in a living building of the FPSO. The air circulation system comprises an air collection system,an air return system, an air supply system, an exhaust system and a system control device, wherein the air collection system is used for pumping fresh air from the outside; the air return system is used for carrying out mixed circulation on air in a cabin; the air supply system is used for supplying air to all positions in the cabin; the exhaust system is used for exhausting the air in the cabinto the outside; and the system control device is electrically connected with the above systems. Air pipes of all the systems are the same; an air volume value is equal to a product of the unit time, an air speed value and an air pipe section area; the system control device can continuously detect and adjust the wind speed of each system; and a sum of a fresh air volume of the air collection systemand an air return volume of the air return system is equal to an air supply volume of the air supply system, and the sum of the air supply volume of the air supply system and the air return volume ofthe air return system is smaller than the air supply volume of the air supply system so that positive pressure is formed between the cabin and the outside, outside air difficultly enters the cabin, and safety of living areas is improved.

The invention discloses a cutting chipping gas-solid separation and dust collection treatment system. The cutting chipping gas-solid separation and dust collection treatment system structurally comprises an induced air dust collection cover device arranged on a machine tool in a sliding manner; two settling bins are arranged in parallel under the induced air dust collection cover device; electric unloaders are arranged at the bottoms of the two settling chambers; an air outlet pipeline is arranged at one sides of the settling chambers; a scraper conveyor is arranged under the electric unloaders; an elevator is arranged at the discharge end of the scraper conveyor and connected with a storage bin; the air outlet pipeline is connected with a pulsing bag-type dust remover; a screw discharger is arranged under the pulsing bag-type dust remover; an air outlet of the pulsing bag-type dust remover is connected with an induced draft fan which is connected with a chimney. The cutting chipping gas-solid separation and dust collection treatment system is capable of overcoming the shortcomings in the prior art; as a result, the air pressure and air speed requirements of the system are reduced, the abrasion of particle recovering to the pipeline is reduced and the dust removal effect is good; besides, the labor intensity is reduced and the production efficiency is improved.

The invention belongs to the field of stage equipment, and particularly relates to a multifunctional stage effect making device. The multifunctional stage effect making device comprises a box, wherein an air blowing system is arranged in the front of the box; a smoke sprayer, a bubble maker and a snowflake maker are arranged at the rear of the box; the smoke sprayer is arranged on the left side of the rear of the box and is connected with the air blowing system; the smoke sprayer comprises a smoke oil tank, a smoke oil pump and a heater which are connected successively; the bubble maker is arranged in the middle of the rear of the box and is connected with the air blowing system; the bubble maker comprises a bubble oil tank, a bubble oil pump and a groove which are connected successively; the groove is formed in the air blowing system; the snowflake maker is arranged on the right side of the rear of the box and is connected with the air blowing system; and the snowflake maker comprises a snowflake oil tank, a snowflake oil pump and a condenser which are connected successively. The multifunctional stage effect making device has the advantages of integrating smoke making, bubble making and snowflake making; the use space and use cost can be saved effectively; and meanwhile, the stage effect making efficiency can be greatly improved.

The invention discloses an automatic movable walnut shell and kernel mixture airflow sorting machine. The sorting machine comprises a vibratory feeding machine, an automatic material limiting and air adjusting device, a negative pressure fan, a diaphragma juglandis settling box, a cyclone dust collector, a walnut kernel discharging port automatic height adjusting device, a control cabinet and a walnut shell collecting device. The sorting machine is characterized in that a frequency converter controls the amplitude and frequency of a vibrating motor so as to control the material flow of walnut shell and kernel mixtures of different grades, the automatic material limiting and air adjusting device mounted at a feeding port controls the size and the air speed of inlets of materials of different grades, the materials flow into a shell and kernel separation cavity through an impurity removing system and a slide carriage and pass through the negative pressure fan, and walnut kernels are collected from the lower end of the discharging port, and walnut shells pass through the separation cavity and enter an unloading box to be collected. According to the sorting machine, automatic control over the material flow of the shell and kernel mixtures of different grades and the required air speed and air quantity is realized, and the sorting machine is suitable for separation and collection of the shells, the kernels and diaphragma juglandis of different grades generated after mechanical walnut shell breaking.

The present invention provides a cooling fin which is not only provided with an air suction port at a right side of the cooling fin, but also additionally provided with a plurality of air suction ports on any side surface in the middle from the right side of the cooling fin to a back side of the cooling fin, and additionally provided with air suction ports on any bottom surface in the middle from the right side of the cooling fin to the back side of the cooling fin, so as to obtain the air newly sucked from the air suction ports between an upstream side and a downstream side of the cooling fin. Air can be sucked from the plurality of air suction ports provided at any side surface or bottom surface in the middle from the right side of the cooling fin to the back side of the cooling fin, therefore, external fresh air is sucked from any position inside the cooling fin, turbulent flow may occur due to collision of two air flow vectors formed by the air from the air suction port at one side towards the back side and the air sucked from the other plurality of air suction ports in the direction perpendicular to the direction of the above-mentioned air.

The invention discloses a flue gas device for a hazardous waste incineration system. The flue gas device comprises a main combustion chamber, a secondary combustion chamber and a fan assembly, the upper end and the lower end of a hollow sealing piece are fixedly connected with an outer cylinder and a shell respectively, the hollow sealing piece is provided with through holes, the bottom of the shell is provided with a first air inlet hole, a second air inlet hole is formed in a fire blocking portion, a radial air distribution layer and a tangential air distribution layer are arranged on the side wall of an upper cavity, a third opening is formed in the upper wall of the upper cavity, the radial air distribution layer is provided with a radial air inlet hole, a tangential air inlet hole isformed in the tangential air distribution layer, a secondary combustion chamber waste liquid combustion-supporting machine is in communication with the radial air inlet hole, a cooling fan is in communication with the tangential air inlet hole, one end of a flue gas heater is in communication with the third opening, and the other end of the flue gas heater is in communication with an induced draftfan. The flue gas device has the advantages that the air speed of the flue gas can be effectively controlled, and the residence time of the flue gas can be improved.

The invention provides a low-energy-consumption environment control all-in-one machine for residence. The low-energy-consumption environment control all-in-one machine comprises an indoor unit and an outdoor unit, wherein a first air filter screen, an indoor first heat exchanger, an indoor second heat exchanger, an air feeder, a refrigerant inlet pipe, an indoor unit electronic expansion valve, an indoor unit electromagnetic valve, an electronic air valve, a heat exchange core, an exhaust fan, an indoor unit fresh air bypass valve and a humidifier are arranged in the indoor unit; and a compressor, a gas-liquid separator, a four-way valve, a condenser, an axial flow fan, an outdoor unit electronic expansion valve and an outdoor unit bypass valve are arranged in the outdoor unit. According to the environment control all-in-one machine, the internal structure of the indoor unit is ingeniously designed, the functions of refrigerating, heating, dehumidifying, fresh air heat recovery, fresh air bypass, humidifying and the like are achieved at the same time, the integration and intelligence degree is high, and the energy consumption is low. The invention further provides a control method of the low-energy-consumption environment control all-in-one machine for residence. According to the control method, intelligent automatic adjustment can be realized, and the target air environment can be obtained with the minimum energy consumption.

The invention provides a pulse width modulation closed loop control circuit for a speed regulation module. The pulse width modulation closed loop control circuit for the speed regulation module comprises a load, a control circuit, a low-pass filter circuit, a difference amplifier, a comparison circuit, an oscillator and a speed regulation circuit, wherein the first end of the load is connected to a power supply VBAT; the second end of the load is grounded through the speed regulation circuit; the control circuit outputs a PWM (pulse width modulation) signal; the low-pass filter circuit is connected with the output end of the control circuit and is used for converting the PWM (pulse width modulation) signal to a direct-current signal and outputting the direct-current signal; the difference amplifier carries out sampling and amplifying on voltages at the two ends of the load and outputs an amplifying signal; the comparison circuit compares the amplifying signal to the direct-current signal and outputs a difference signal; the duty ratio of the PWM signal output by the output end of the oscillator is regulated according to the difference signal; and the output end of the speed regulation circuit is connected with the second end of the load. According to the pulse width modulation closed loop control circuit for the speed regulation module, pulse width modulation control is carried out on the speed regulation module, so that the voltages at the two ends of a fan are still stable when the voltage of the power supply varies, and the wind speed is stably controlled.

The invention belongs to the technical field of steel slag treatment and relates to a crushing and drying all-in-one machine. The crushing and drying all-in-one machine comprises a shell, a spiral crushing cutter, an air heater and a motor; one end of the shell is communicated with the air heater; the shell is in meshed connection with a motor gear on the motor through a shell gear ring; the shell comprises a crushing cavity shell; a high-temperature-resistant thermal pipe is wrapped with the crushing cavity shell; a crushing cavity is formed between the crushing cavity shell and the high-temperature-resistant thermal pipe; the spiral crushing cutter is installed in the crushing cavity; the high-temperature-resistant thermal pipe is wrapped, so that a high-temperature air cavity can be formed; one end of the high-temperature air cavity is communicated with an air outlet of the air heater; and the shell is movably installed on a rack. The crushing cavity shell sleeves the high-temperature air cavity;steel slag is dried while being crushed; the heating area of the steel slag is increased through stirring of crushing, so that a drying effect is better; the high-temperature-resistant thermal pipe is high in heat conductivity and not prone to high-temperature deformation.

The invention relates to a blast device for a random marking apparatus. The blast apparatus comprises one to N draught fans, one to N air channels, one to N air outlets and one to N valves. The blasting air is normal temperature air, hot air and cold air; the valve can be a single-way valve and a proportion valve; and wind speed and directions of the air outlet can be controlled by a controller and a sensor. The blast device can be applied to an anti-fake label marking stage and/or a drying stage; oil ink can be blasted; a position of the oil ink falling on medium and a shape of the oil ink falling on the medium can be effected; and meanwhile, the oil ink can be quickly dried.

The invention discloses a plasma gas purifier capable of simultaneously sterilizing, killing viruses and deodorizing, and relates to a waste gas purification treatment technology. The plasma gas purifier is characterized by comprising a gas guide pipeline, a plurality of staggered baffle plates and a plurality of plasma generators, wherein the baffle plates are arranged in the gas guide pipeline and are used for prolonging the gas flowing distance and reducing the sectional area of gas passing through, the plasma generators are arranged in the gas guide pipeline along the gas flowing path, and a fan is arranged at an inlet of the gas guide pipeline. Compared with the prior art, the plasma gas purifier has the advantages of being small in size, convenient to use, free of replacement of filter materials and low in use cost.

The invention discloses a horizontal axis draught fan with small blades capable of periodically swinging. A tower frame, a hub, big blades, the small blades, a screw shaft, a chain, an upper chain wheel, a lower chain wheel, a hand wheel, long cylinder pin rods, connecting rods, sliding rods, sliding sleeves, L-shaped crank rods, movable gears, a fixed gear, a sliding sleeve supporting ring and abracket are included. Under the action of wind, the big blades drive the hub to do the rotation movement, the three movable gears can be driven to do the planet movement around the fixed gear throughrotation of the hub, and accordingly a crank and rocker mechanism is composed of the big blades, the L-shaped crank rods, the connecting rods and the small blades. The small blades are driven to periodically swing through the plane movement of the connecting rods, accordingly, the airflow speed can be effectively controlled, and the wind energy conversion efficiency is improved. On the other hand,through changing of the positions of sliding blocks on L-shaped cranks, the small blade swinging angle can be adjusted, the structure is scientific, operation is convenient, and the horizontal axis draught fan is worthy of popularization.