119results about How to "Good temperature control" patented technology

The invention discloses a mass concrete-based temperature field research method and a mass concrete-based temperature control method. The research method comprises the following steps of: establishinga mass concrete entity research object; measuring temperatures, in a pouring process, of a plurality of measurement points of the entity, and drawing corresponding temperature change curves to obtaintemperature field characteristics and a temperature change law; establishing a finite element analysis model according to the entity research object and automatically calculating temperatures of thecorresponding measurement points; adjusting temperature field calculation parameter of the model through comparing the calculated temperature values of the model with the actually measured temperaturevalues; and finally adjusting influence factors influencing hydration heat in a mass concrete model, carrying out analysis to obtain an influence result and an influence law, and adopting a corresponding temperature control method according to the result and the law. According to the mass concrete-based temperature field research method and the mass concrete-based temperature control method, fissures are prevented from occurring in mass concrete, and the pouring quality of concrete and the total quantity of projects are ensured.

The invention provides a thermal management system and method for electric vehicle batteries based on a memory alloy. The thermal management system comprises a battery box, wherein the battery box accommodates a plurality of variable heat transfer coefficient heat collection modules with the same structure, the variable heat transfer coefficient heat collection modules are sequentially arranged side by side to form a variable heat transfer coefficient heat collection unit, and the edge is connected with the inner wall of the battery box through a sliding rail; each variable heat transfer coefficient heat collection module includes two heat collection plates which are arranged side by side and have a certain spacing, the two heat collection plates are provided with a plurality of single batteries arranged side by side therebetween, the end parts of the two heat collection plates are connected through a memory alloy plate, the memory alloy plate is tightly contacted with the corresponding single batteries, the two heat collection plate are further provided with an elastic member therebetween, and the spacing between the two heat collection plate can vary with the size of the memory alloy plate. The thermal management system can automatically adjust the heat dissipation intensity according to the temperature of the battery system, and improve the temperature consistency inside thebattery system at the same time. In addition, the thermal management system is simple in structure and low in energy consumption.

The invention is a variable-frequency energy-saving control system of central air-conditioner, composed of main controller and temperature sampling controller, where the input end of the main controller is connected with 485 communication circuit, memory, analogue quantity input circuit and switching quantity input circuit, and the output end of the main controller is connected with relay output circuit and frequency inverter output control circuit; the input end of the temperature sampling controller is connected with three sampling chips and the output end of he temperature sampling controller is connected with the 485 communication interface of the main controller through 485 communication port. The main controller implements a compound control according to the temperature signal and the pressure signal of evaporator and condenser of the central air-conditioner, and controls a three-phase AC machine by the output of the frequency inverter and the relay to realize the speed change, able to realize the variable frequency switching of two frequency inverters controlling three electric machines, providing the optimum working state for variable-frequency control system and achieving the best energy-saving effect.

The invention provides a method and a device for controlling the temperature of a lithium ion battery. The method comprises the following steps: acquiring the temperatures of at least three continuoustime points and a current direction of a present time point of a lithium ion battery, wherein the at least three continuous time points include the current time point and at least two time points before the present time point; according to the temperature of the present time point and a target temperature, calculating temperature deviation of the present time point of the lithium ion battery; according to the temperatures of the at least three continuous time points, calculating the temperature variation trend of the lithium ion battery; according to the current direction of the present timepoint, confirming present charge/discharge states of the lithium ion battery; and according to the temperature deviation of the present time point of the lithium ion battery, the temperature variationtrend of the lithium ion battery, and the present charge/discharge state of the lithium ion battery, confirming voltage adjustment quantity of a refrigeration device. By adopting the method and the device, temperature fluctuation of a battery module is very well inhibited.

This invention dicloses a semiconductor laser alignment and precision temperature control device, Including temperature control by the Ministry, the Ministry of alignment, Shell, a base and joints. Temperature Control and the Department of the Ministry of the true - are installed at the shell, the shell in a fixed base, air installed at the bottom shell connector. Temperature control by the Ministry of laser tube, heat sink, TEC temperature control device, a heat pipe radiator, installed in the laser tube heat sink, the TEC temperature control device affixed to the heat sink, heat pipe back to install radiator, the Ministry of the true - by photoelectric beam collimator feedback and fine-tuning body parts and 2D composed by the two-dimensional fine-tuning agencies regulating frame plate spring, collimating components support slider, adjusting screw on the composition, collimating components rely on support slider and on the plate spring box installed at the regulation, regulation of the screw in the direction perpendicular to each other across the two adjacent frames regulating and extending to the edge components support collimator slider surface. This invention has laser beam alignment and laser temperature control of the two major functions, simple structure, the overall insulation of good, easy-to-use, high precision, stable and reliable performance.

The invention discloses a spiral double-water flow channel cooling high-power density permanent magnet synchronous motor, which comprises a stator, a rotor and a cooling system, wherein the cooling system is composed of a temperature sensor (14), a DSP control chip, a first spiral water flow channel (12), a second spiral water flow channel (13) and a water pump; and a motor shell (15) is internally provided with a first spiral water flow channel (13) and a second spiral water flow channel (12) with the water flow opposite to the first spiral water flow channel. The spiral double-water flow channel cooling high-power density permanent magnet synchronous motor has the advantages that the cooling performance of the motor is improved; the cooling temperature of a high-power motor can be effectively solved; hidden safety dangers and losses caused by irreversible demagnetization of the permanent magnet when the permanent magnet synchronous motor run at a high temperature for a long time can be avoided, and the spiral double-water flow channel cooling high-power density permanent magnet synchronous motor is widely applied to a high-power permanent magnet synchronous motor application scene.

A steel sheet used for hot stamping includes, by weight percent, 0.18˜0.42% of C, 4˜8.5% of Mn and 0.8˜3.0% of Si+Al with the balance being Fe and unavoidable impurities. The alloy elements of the steel sheet enable the actual measured value of the martensitic transformation start temperature after hot stamping to be ≦280° C. The method for manufacturing the component includes: heating the material to 700˜850° C. and then stamping; cooling it to the temperature that is 150˜260° C. below the martensitic transformation start temperature by cooling in a die, cooling by air, water, or other methods; heating the component to a temperature ranging from 160 to 450° C. and maintaining the temperature for 1 to 100000 seconds for heat treatment, and then cooling the component to room temperature. The formed component has a yield strength of ≧1200 MPa, a tensile strength of ≧1600 MPa and a total elongation of ≧10%.

The invention relates to a process for the production of ethylene, comprising the steps of a) thermally converting, by a pyrolysis or a partial oxidation process, a feed charge containing methane into an acetylene containing effluent, and b) in situ hydrogenating, by a non-catalytic reaction, the acetylene produced in the first step into ethylene by intimately mixing the acetylene containing effluent with an ethane feed.

The process according to the invention is more efficient than other synthesis schemes, while simplifying the overall process design. This process thus offers an economically attractive scheme for mass production of ethylene from natural gas, based on a well-known and proven acetylene route.

The invention discloses a temperature control system and method for electronic appliance. The system controls temperature of electronic appliance by utilizing temperature regulating device. The method comprises the following steps (1) obtaining the environmental parameter of different scenes for electronic appliance and confirming the thermal characteristics of temperature controlled object, (2) setting different temperature control styles according to the environmental parameter and the thermal characteristics of temperature controlled object, (3) choosing different temperature control styles according to actual using environment, (4) controlling the temperature regulating device according to chosen temperature control style. The temperature controlled system and process can satisfy the claim of electronic component temperature control in different environment, and has features such as maturated process engineering, cheap engineering project cost and stable and reliable result.

A turbo-generator includes a rotor body and a rotor winding disposed around the rotor body. The rotor winding including a sub slot, a first axial cooling duct having a first inlet and a first outlet, and a second axial cooling duct disposed adjacent and parallel to the first axial cooling duct for multi-path cooling. The second axial cooling duct has a second inlet and a second outlet. The first inlet is disposed offset from the second inlet and the first outlet is disposed offset from the second outlet.

The invention discloses a crucible used for preparing monocrystalline silicon by a czochralski method. The crucible comprises a crucible main body which is composed of a bottom and a side wall, wherein the crucible is of a sectional type crucible structure; the crucible main body is at least divided into two sections from top to bottom according to difference of materials; the crucible main body comprises an upper-layer side wall made of a carbon-carbon composite material and a lower-layer bottom made of a graphite material, wherein a plurality of heat-conducting holes are uniformly distributed on the side wall; the diameter of the heat-conducting holes is 5mm-20mm; distance between borders of the heat-conducting holes is 10mm-50mm according to different pore densities; an area, which is uniformly distributed with the heat-conducting holes, on the side wall is 2cm-6cm from the side wall; the width of the side wall in the downwards vertical direction is 16cm-25cm; the inner side surface of the side wall of the area is parallel to a center shaft of the crucible. The crucible disclosed by the invention has characteristics of good heat conductivity, good temperature control, long service life and great loading amount.

Disclosed are a pallet (10) and a plasma machining apparatus. The pallet (10) is used for bearing a machined work-piece (14), and adjusting the temperature of the machined work-piece (14) by means of a heat exchange gas, wherein at least one bearing region of the machined work-piece is formed on the upper surface of the pallet (10); the shape and size of each bearing region of the machined work-piece are corresponding to the machined work-piece (14) to be borne; at least one recess (11) which is recessed towards the lower surface of the pallet is formed in a non-edge region (111) of each bearing region of the machined work-piece; the maximum diameter of a notch of each recess (11) is smaller than the minimum diameter of the borne surface of the machined work-piece (14) to be borne; intake holes (13) are distributed on the bottom surface of the recess (11); and the intake holes (13) are connected to a gas source of the heat exchange gas. The pallet (10) can not only improve the efficiency and uniformity of heat exchange between the heat exchange gas and the machined work-piece (14), but can also reduce the leakage amount of the heat exchange gas.

The invention discloses a decoupling control method and system for a temperature field regional control system. According to the method, target temperature signals Ri and measurement signals Ybi of an i region of a temperature field are adopted as error signals Ei of a PID controller; the measurement signals Ybi and output signals Yai of a mathematical model of the i region of the temperature field are adopted as input signals di of a filter Fi; control signals Ui outputted by the PID controller and compensation signals Uci outputted by a mathematical inverse model of the i region of the temperature field are superposed so as to act on the i region of the temperature field; and the output temperature Yi of the i region of the temperature field is controlled. The mathematical model of the i region of the temperature field is adopted as a disturbance observer, and the mathematical model of the i region of the temperature field and a difference value outputted by actual objects are adopted as disturbance variables di, so that compensation is performed, and therefore, the coupling of the i region of the temperature field and other temperature regions can be effectively eliminated, and thus, the setting of the parameters of the PID controller can be realized with easiness, and an excellent temperature control effect can be realized. The whole control system is simple in structure and easy in operation, and can obviously improve the control precision of the regions of the temperature field.

The invention belongs to the field of household drinking water machines and apparatuses, and discloses a water dispenser with an ultraviolet sterilization function. The water dispenser comprises a water bucket, a water level display, a hot water valve, a body, a water collection plate, an ultraviolet sterilization cabinet, a red display lamp, a green display lamp, a hot water outlet pipe and a normal-temperature water outlet pipe. The water bucket is mounted on the upper side of the body; a normal-temperature water outlet valve is mounted below the green display lamp; the hot water valve is mounted on the left side of the normal-temperature water outlet valve; a handle is arranged on the front surface wall of the ultraviolet sterilization cabinet, and foot pads are mounted on the lower side of the ultraviolet sterilization cabinet. The water dispenser has the advantages that an instrument capable of monitoring the internal water level of the water dispenser is arranged on equipment, accordingly, the problem of damage in heating procedures due to low quantity of water in service procedures can be solved, and the service life of the equipment can be prolonged; the foot pads are mounted on the lower side of the body and are made of macromolecule rubber materials, accordingly, frictional force can be increased, effects of protecting the body can be realized, and requirements of people can be met.

The invention relates to a temperature control system, which comprises: a first cavity enclosed by a first housing and isolated from the outside environment; a second cavity enclosed by a second housing, wherein the second cavity is arranged inside the first cavity and is used for holding a thermal insulation object; a first temperature controller for heating and/or cooling the first cavity and the second cavity; and a second temperature controller having a temperature out-of-control protection switch and used for heating the thermal insulation object. With the microorganism culture instrument and the temperature control system of the present invention, the second cavity and the outside are separated through the first cavity, and the thermal insulation object is placed inside the second cavity, such that the thermal insulation object is not easily affected by the outside environment temperature change so as to achieve the good temperature control effect; and with the unique temperature out-of-control protection design, the electrical safety of the whole temperature control system can be ensured.

A drying device for panels comprises a box, a heating component, temperature sensors, a programmable controller and a conveying belt. The conveying belt penetrates through the box and is provided with a speed control component, the speed control component is in data connection with the programmable controller, and the programmable controller controls the speed of the conveying belt through the speed control component according to the thickness and water content of the panels. The panel conveying speed can be intelligently controlled, and equipment automation is achieved.

The invention provides a silicon controlled thyristor micro slot group composite phase change integrated cooling heat dissipation method and device, relating to the heat dissipation technology. The method includes that micro dimension composite phase change heat transfer characteristic of thin liquid film evaporation and thick liquid film boiling of liquid in open composite phase change micro slot group in a micro slot group composite phase change heat remover is utilized to remove heat. The device is provided with a micro slot group composite phase change heat remover at the two sides of single silicon controlled thyristor respectively, the silicon controlled thyristor removes heat in multiple groups, each group is provided with a wall type condenser heat dissipation structure, heat emitted by each silicon controlled thyristor can be taken out respectively and is carried into the wall type condenser by steam, condensation heat dissipation is carried out in condensation micro slot thereof, heat is taken away by external cooling water or air, condensed liquid reflows to the micro slot group composite phase change heat remover, and heat dissipation of silicon controlled thyristor with high power, large quantity and strong electric field is realized. The invention is safe and reliable, has small area, high heat-flow density, strong temperature control capability, high efficiency and low energy consumption and can be applicable to integrated cooling heat dissipation of a plurality of high power heat-emitting silicon controlled thyristors.

The invention provides an air conditioner temperature control method and a system, and the method comprises the following steps: receiving an air conditioning mode selected by a user; if user selecting a sleep mode, acquiring outdoor temperature; and adjusting setting temperature according to outdoor temperature to realize temperature control of the air conditioner. The technical scheme has an advantage of good temperature control.

The invention discloses a double-bracket mongolian yurt. The double-bracket mongolian yurt comprises first brackets, second brackets, first felt cloth and second felt cloth. The second brackets are arranged on the outer sides of the first brackets and connected with the first brackets through a plurality of bracket connecting rods. The first felt cloth is arranged on the outer side of the first brackets. The second felt cloth is arranged on the outer sides of the second brackets in a covering mode. An air layer is formed between the first felt cloth and the second felt cloth. The air layer between the first felt cloth and the second felt cloth is used for buffering cold and hot exchanging of the exterior and the interior of the mongolian yurt. According to the double-bracket mongolian yurt, a double-layer steel frame is adopted to built the mongolian yurt, the strength and the stability of the whole mongolian yuart brackets is greatly improved, an air heat preservation layer is formed between an inner felt and an outer felt, the temperature control effect of the interior of the mongolian yurt is improved, energy is saved, and health and environmental protection are achieved.

The invention relates to a raw material pulverizer. The raw material pulverizer comprises a feed assembly, a pulverizing device and a material storing box. The feed assembly comprises a feed hopper, a pushing pipe and a material pushing rod; the pushing pipe comprises a first pipe portion and a second pipe portion, and the second pipe portion is perpendicularly connected with the first pipe portion; the material pushing rod is arranged in the first pipe portion in a sliding mode, and the second pipe portion is connected with the pulverizing device; and a material conveying pipe is arranged on the material storing box, and the material storing box is connected with the pulverizing device. A sound reduction layer and a sound absorption layer are arranged on the outer side of the pulverizing device, the sound reduction layer and the sound absorption layer are connected through a plurality of connecting tendons, and a spongy layer is arranged between the sound reduction layer and the sound absorption layer. According to the raw material pulverizer, noise and dust pollution on raw materials are small.

The invention provides a control system and a control method for an ammonia-to-air ratio automatic set value in a nitric acid production oxidation furnace. The system compares the real-time temperature of an oxidation furnace with a set temperature value. A temperature controller outputs a required ammonia gas flow. Ammonia gas which enters the oxidation furnace is adjusted through an ammonia gas control valve. For inputting air according to a preset ratio, The flow ratio between the ammonia gas and the air is used as feedback of an air circuit and is compared with the basic set value of the ammonia-to-air ratio. The input amount of the air is adjusted through a variable-frequency blower fan. When temperature offset of the oxidation furnace occurs because of a disturbance to the system, the temperature of the oxidation furnace can be quickly adjusted through changing the ammonia-to-air ratio. An intelligent dynamic ammonia-to-air ratio correction unit outputs the corrected value of the ammonia-to-air ratio according to the temperature offset and change of the temperature offset. The dynamic set value of the ammonia-to-air ratio is formed through overlapping the corrected value of the ammonia-to-air ratio and the basic set value of the ammonia-to-air ratio. The real-time ratio between the ammonia gas flow and the air flow is compared with the dynamic set value of the ammonia-to-air ratio. Through a ratio controller, the air is kept constant in a new ammonia-to-air ratio.

The invention belongs to the technical field of heating furnace combustion control and particularly provides a dynamic correction method and device of a heating furnace dual-crisscross amplitude limitsystem. During practical working, when temperature rising requirements of a heating furnace are given, the heating furnace automatically selects an amplitude limit correction factor Ki' under the corresponding state, then an original amplitude limit value Ki, the amplitude limit correction factor Ki' and an oxygen content correction factor m jointly act on an air conditioner, and the original amplitude limit value Ki and the amplitude limit correction factor Ki' jointly act on a coal gas regulator. Through the dynamic correction method and system, the demand for rapid temperature variation inthe heating furnace can be effectively met, the response speed of an original dual-crisscross amplitude limit system is greatly increased, temperature variation can be rapidly responded particularlywhen a heating load varies greatly, and a satisfactory heating furnace temperature control effect is achieved.