33results about How to "Keep the temperature stable" patented technology

In a capacitive voltage divider for measuring high voltage pulses with millisecond pulse duration comprising a high voltage divider including a first cascade of at least two serially arranged condensers of which one (C1) is disposed at the high potential end and another (C2) is disposed at the low potential end of the cascade, and a measuring voltage divider connected to the other condenser (C2) and including a second cascade of at least first and second serially arranged condensers (C3, C4) arranged, respectively, at the high and low potential ends of the second cascade with the second condenser being connected with its low voltage side to a signal supply line leading to a measuring device, and an ohmic resistor (R1) arranged in parallel with the first condenser and a resistance (R2) connected to the one and first condensers in parallel with the second condenser (C4), the ohmic resistor (R1) is so dimensioned that 1.1<C4*R2/C3*R1<1.15.

The invention discloses a constant-temperature control device for CCDs (charge coupled devices) of a spaceflight optical remote sensor. The constant-temperature control device comprises a micro heat pipe, the CCDs, a thin-film electric heater, a switching plate, a conventional heat pipe, a heat dissipation plate and a control circuit, wherein when the CCDs are switched off, the control circuit controls the thin-film electric heater to heat the micro heat pipe; the micro heat pipe simultaneously transmits generated heat to the CCDs and the heat dissipation plate; the heat dissipation plate dissipates redundant heat, so that the temperature of the CCDs can be kept constant; at the moment when the CCDs are switched on, the control circuit controls the thin-film electric heater to be powered off instantly, and redundant heat generated by the CCDs is dissipated by the heat dissipation plate, so that the temperature of the CCDs can be kept constant. According to the constant-temperature control device for the CCDs, power compensation is performed close to the CCDs, so that temperature fluctuation caused by temperature control delay and CCD power change can be avoided; therefore the temperature stability of the CCDs can be improved.

Systems, methods, and devices involving tube carriers adapted for compatibility with 96-well format shorten and automate fluid handling during homogenization, extraction, or other processing of biological samples for high throughput analysis.

A method an apparatus for controlling frequency of a multi-channel transmitter. A reference frequency is generated and emitted to a thermally stable frequency discriminator. The thermally stable frequency discriminator emits a dc voltage to a plurality of individual oscillators. The individual oscillators in continuous wave mode or modulated by baseband signals are combined into a multi-channel signal at an intermediate range of frequencies. The multi-channel intermediate range of frequencies are preferably amplified and emitted as an output signal. At relatively lower frequencies, such as 4-6 GHz, up-conversion of the output signal is not necessary. At relatively higher frequencies, an up-converter can be used to employ a second thermally stable frequency discriminator.

The invention relates to a supercooled water type dynamic ice slurry making system. The supercooled water type dynamic ice slurry making system is a technologic system for making a clear water ice slurry by adopting a supercooled water technology. The system is characterized in that one or more separator plates is/are arranged in an ice storage tank, a water level balancing hole is arranged in every separator plate, and the separator plates are equidistantly arranged, and divide the ice storage tank into two or more separate tanks; and an upper water extracting tube and an ice slurry tube are arranged above every separate tank, a lower water extracting tube is arranged below every separate tank, the upper water extracting tubes and the lower water extracting tubes are provided with regulating valves, and every ice slurry tube is provided with a switch valve. In the ice slurry making process, water in one of the separate tank is extracted from the lower portion, high temperature water is extracted from the upper portion of another separate tank, the extracted water and the extracted high temperature water are mixed, the obtained water mixture is sent to a supercooled water heat exchanger through a water pump and forms the ice slurry in a crystallization promoting device, the ice slurry is sent to the upper portion of the one separate tank for making, and above cycle is repeated. The system has the advantages of great reduction of cold heat loss generated by cooling water preheating, great reduction of the preheating loss, and substantial energy saving benefit.

A magnet temperature control device, for use in a magnetic resonance system having a magnet, includes a pipeline and a temperature regulator. The pipeline is connected to a liquid or gas circulation, and the temperature regulator is connected in series in the pipeline to regulate the temperature of the liquid or gas. A part of the pipeline is arranged inside the magnet, while the rest of the pipeline is arranged outside said magnet; the part of said pipeline which is arranged inside said magnet is distributed uniformly within the magnet, and its cross-sectional shape is in an annular, helical, radicalized or network form, or a combination thereof. Compared to the use of a heater that is distributed only on the surface of the magnet, the pipeline distributed inside the magnet can control the magnet temperature more directly and effectively, so as to smooth and eliminate the temperature change of the magnet promptly by the liquid or gas flow therein, thereby making the magnet temperature more stable.

A potassium fluoroboratoberyllate crystal oblique-incidence laser frequency multiplier, comprising: a flake-like potassium fluoroboratoberyllate crystal having parallel front and back polished surfaces; a front antireflection film and a back antireflection film; a columnar crystal support provided with a square holding slot and a light through-hole; and external heating jackets; the crystal is disposed in the square holding slot, the front and back surfaces of the crystal conforming to a main surface of the square holding slot, a normal of the main surface of the holding slot forming an angle θ with the central axis of the crystal support; a laser at a fundamental frequency passes through the front antireflection film, and a frequency-multiplied laser generated in the crystal is transmitted out through the back antireflection film. The present invention has a simple structure and a low cost, and is suitable for medium-and high-power laser systems.

A temperature measuring apparatus comprises a casing, an infrared sensor assembly, a probe, and a trigger device. The infrared sensor assembly is disposed in the casing. The trigger device is connected between the casing and the probe in such manner that when the probe moves toward the casing, the trigger device is activated by the probe to trigger the infrared sensor assembly to proceed sensing. The temperature measuring apparatus could be operated to measure without pressing any measuring button, so that the temperature measuring apparatus could have a stable operation in the measuring process. Hence, the error of the temperature measuring is reduced and the operation is more convenient.

The invention discloses a recreational vehicle. The recreational vehicle comprises a cabin, a transverse partition plate for partitioning the inner space of the cabin into a front space and a back space is arranged in the middle of the cabin, a longitudinal partition plate is arranged in the space behind the transverse partition plate to partition the space into a left subspace and a right subspace respectively, an inner transverse partition plate is arranged in one of the subspaces to partition the subspace into a toilet and a kitchen, and doors are arranged on the inner transverse partition plate and the transverse partition plate correspondingly to allow users to pass through. The recreational vehicle has the advantages that the toilet and the kitchen which are in a hallway structural design can be independently used in a closed manner, the users can cook in the closed kitchen, and an independent ventilation system in the kitchen can protect a living space from being contaminated and keep the temperature of the living space stable.

The invention relates to a cold chain box. The cold chain box comprises a shell, a liner is arranged in the shell, and a heat insulating layer is arranged between the liner and the shell. Refrigerators are installed on the side wall of the liner. Electronic boxes are disposed between the heat insulating layer and the shell, and the electronic boxes are internally provided with slave controllers connected with the refrigerators, first temperature sensors connected with the slave controllers for detecting the temperature in the liner, second temperature sensors for detecting the ambient temperature and power sources. The slave controllers are further connected with a main controller disposed on the shell. The cold chain box can realize rapid cooling and refrigeration or rapid heating, and can perform partitioning temperature control on a box body.

The invention discloses cooking equipment having functions of quick heating and quick cooling, for processing of navy beans, and relates to the technical field of food processing. The cooking equipment comprises a cooking box, wherein a sleeve body is fixedly connected to the surface of the cooking box; a cooling tank is arranged on one side of the sleeve body; a fixing plate is fixedly connectedto the middle of the inner part of the sleeve body, and is used for dividing the inner part of the sleeve body into an upper cavity body and a lower cavity body; and the cooling tank communicates withthe lower cavity body through a first fixed pipe, and communicates with the upper cavity body through a second fixed pipe. According to the cooking equipment disclosed by the invention, a magnet hasthe effect of magnetic suction on an iron block, so that a frame body is in reciprocating motion, the navy beans are subjected to the stirring effect in all directions in the same layer, and the navybeans are uniformly cooked; under the effect of a PID temperature control device, the temperature in the cooking box is quickly risen, and the temperature is stable; under the effect of rotating shaft, a radiator fan works, so that wind blowing and heat dissipation are performed on the cooking box; and through cooperation with the cooling effect of cold oil, the heat dissipation efficiency is improved.

The invention discloses a ceramic diaphragm and a preparation method and application thereof, and a battery comprising the ceramic diaphragm. The ceramic diaphragm comprises a base material and a ceramic coating compounded on at least one surface of the base material, wherein the ceramic coating is prepared from two or more ceramic powder and a binder; the ceramic powder comprises a main component tetragonal zirconia and a toughened component; the toughened component is one or two or more of cerium oxide, hafnium oxide and magnesium oxide; and the toughened component can be yttrium oxide. Due to the doped toughened component, zirconium oxide can exist in a metastable tetragonal phase at a room temperature, the prepared ceramic powder coats the membrane of taking a polyolefin microporous membrane as the base material, and the zirconium oxide in the tetragonal phase is mutated into zirconium oxide in a monoclinic phase during a sudden rise of the temperature or an impact of external force to absorb one part of energy, so that an effective flame-retardant effect can be achieved, and the stable temperature can be effectively ensured; and the preparation method of the ceramic membrane is simple in process and good in repeatability and has very high promotion and application values.

The invention relates to organic pollutant detection technology, and aims to provide a standard gas sample injection regulating system for dioxin online detection. In the system, a carrier gas cylinder and a standard gas cylinder are respectively connected to a gas dilutor through pipelines, the gas dilutor is used for regulating mixed species, mixed concentration and output flow of different standard gas and carrier gas, an outlet of the gas dilutor is connected with a four-way valve, other three joints of the four-way valve are connected to a time-of-flight mass spectrometer, a pre-concentrator and a flue gas sampling gun respectively, an outlet of the pre-concentrator is connected with a gas chromatograph, the gas chromatograph is connected with the time-of-flight mass spectrometer, and heat traced pipelines are arranged on the pipelines connected with all devices. Dioxin online detection target related compound standard gas can be transiently switched, and the shortcoming of incapability of continuously switching the standard gas for a long time is effectively overcome. Good temperature stability and gas transportation can be ensured, and data authenticity is maximally restored.

The invention belongs to the technical field of evaporators, and particularly relates to a pipeline type constant-temperature evaporator for a refrigeration house. The evaporator comprises an evaporator upper tube bank, an evaporator middle tube bank, an evaporator lower tube bank and a constant-temperature pond; the evaporator upper tube bank, the evaporator middle tube bank and the evaporator lower tube bank are sequentially mounted from top to bottom, through the cooperation effect of the evaporator upper tube bank, the evaporator middle tube bank and the evaporator lower tube bank, the evaporator upper tube bank, the evaporator middle tube bank and the evaporator lower tube bank can cool the upper portion, the middle portion and the lower portion in the refrigeration house, through thecooperation effect of a temperature sensor, an AD conversion module, a master control module and an electric pump control end, intelligent regulation of the temperature is achieved, the temperature control is more accurate, through the evaporator upper tube bank, cooling and heat absorbing are carried out, through the evaporator middle tube bank and the evaporator lower tube bank, constant-temperature heat preserving effect is achieved, and the temperature in the refrigeration house is kept stable.

The invention discloses an intelligent cooling device for smelting. The device comprises a mounting plate, a first water tank, a purifying tank, a second water tank and a filter box, wherein the first water tank is installed at one end of the top of the mounting plate; the second water tank is installed at the other end of the top of the mounting plate; the filter box is installed at the top of the first water tank; an air pump is installed at the top of the interior of the filter box; and a smoke extracting tube extending to the exterior of the filter box is installed at the input end of the air pump. The smoke extracting tube, the air pump, an air return pipe, a first electromagnetic valve and a second electromagnetic valve are installed, during use, smoke in a slag container is sucked into the filter box through the air pump, and when the temperature in the slag container is high, a single-chip microcomputer can control the second electromagnetic valve to be opened, so that the smoke with the high temperature in the slag container can be discharged, and the temperature in the slag container can be rapidly reduced; and when the temperature in the slag container is not high, the single-chip microcomputer controls the first electromagnetic valve to be opened, so that the smoke flows back into the slag container, and the temperature in the slag container can be kept stable.

The invention relates to the technical field of heat dissipation structures, and discloses a temperature control type radiation cold shield device for heat dissipation of a light inlet of a large-aperture optical remote sensor, and the device comprises an inner multi-layer heat insulation assembly, an inner heat cover for isolating heat flow disturbance, and an outer heat cover which is disposed at the outer side of a front lens cone and is used for isolating heat flow disturbance, and the inner multi-layer heat insulation assembly and the inner heat cover are successively disposed at the inner side of the front lens cone. The outer heat cover is wrapped with an outer multi-layer heat insulation assembly to reduce heat leakage of the external environment, the outer heat cover is provided with a heat dissipation device used for dissipating heat, the heat dissipation device comprises a heat pipe and a heat dissipation face, the heat pipe is attached to the outer surface of the outer heat cover, and the heat pipe is communicated with the heat dissipation face and used for uniformizing the temperature of the outer heat cover and dissipating heat. And the outer heat cover, the inner heat cover and the front lens cone are all provided with temperature control loops, so that the heat of the light inlet of the large-aperture optical remote sensor can be efficiently dissipated, the temperature of the light inlet can be kept stable, and the precise temperature control of the front lens cone is realized.

The invention relates to a multi-channel air supplement device for a dryer cold room, and belongs to the technical field of tobacco leaf redrying cooling air supplement. The multi-channel air supplement device of the dryer cold room comprises a main air supply device used for conveying hot air and side face air supplement devices used for supplementing cold air to the main air supply device, the side face air supplement devices are installed on any one or more side faces of the main air supply device, the main air supply device comprises a hot air inlet pipe, a main air outlet pipe and a first air door, and each side face air supplement device comprises an air supplement box, an outdoor air supplement pipe, a hot air return pipe, a second air door, a third air door, a fourth air door and a fifth air door. The multi-channel device can meet the air supplementing requirement under different outdoor air temperature conditions, the temperature in the redryer cold room is kept stable, the tobacco leaf cooling and moisture regaining quality is guaranteed, water and steam energy consumption in the moisture regaining process is reduced, and the device is simple in structure, convenient to install and maintain and convenient and fast to operate.

The present disclosure provides a composition comprising at least one primary branched nonionic surfactant of Formula (I) wherein x is an integer from 1 to 11, y is an integer from 0 to 25, R₁ is an alkyl group having 1 to 5 carbon atoms, and R₂ is an alkyl group having 3 to 7 carbon atoms; and a secondary alcohol ethoxylate of Formula (II): wherein R₃ and R₄ are linear alkyl groups each having from 1 to 12 carbon atoms, and n is an integer from 1 to 20.

The invention discloses a coupling agent for infrared thermotherapy and a patch for infrared thermotherapy. The coupling agent includes a nonionic surfactant, electrolyte and a solvent; the nonionic surfactant is any one of a polyoxyethylene nonionic surfactant and a polyol nonionic surfactant; and the electrolyte includes at least one of sodium chloride and potassium chloride. The coupling agentformed by adding the polyoxyethylene nonionic surfactant or the polyol nonionic surfactant can achieve the effects of reducing skin impedance, so that the temperature can be kept stable after the coupling agent is used, and health care effects of stimulating human vegetative nervous systems and strengthening the blood circulation of bodies can be achieved.

The invention discloses a constant-temperature drying and energy saving system with multi-circuit treatment for Chinese prickly ash. The constant-temperature drying and energy saving system mainly consists of a control system, a temperature compensation device, a roasting duct (1), a dehumidifier (3), an exhaust fan (4), a vibration-type drying rack (6), a heating device (5) and the like, and is characterized in that the vibration-type drying rack (6) consists of a tarpaulin (66), a motor (61), a stirring shaft (62), a rolling wheel mounting rack (65), rolling wheels (63) and the like; the control system consists of a power output module, a capacitor starting filter circuit, a motor constant-speed control circuit, a soft-start voltage-stabilized source circuit, a three-terminal adjustable integrated voltage-stabilizing circuit and the like. According to the constant-temperature drying and energy saving system, the vibration-type drying rack capable of sufficiently and uniformly heating the Chinese prickly ash by use of hot air is adopted, and meanwhile the temperature compensation device is configured to perform effective temperature compensation on the interior of the roasting duct, so that the drying temperature stability and drying efficiency of the system are effectively improved.

The invention relates to the technical field of medical instruments, and discloses an intraoperative limb heat preservation device which comprises a base layer. A supporting layer is fixedly mounted at the bottom of the base layer, and plastic packaging films are fixedly mounted at the bottom of the supporting layer and the top of the base layer. Two carbon nano tube heating elements are fixedly mounted between the base layer and the plastic packaging film on the upper side, copper electrodes with one ends extending to the outer side of the plastic packaging film are fixedly mounted at the two output ends of the two carbon nano tube heating elements, and electrode connecting wires are fixedly mounted on the outer sides of the four copper electrodes. According to the intraoperative limb heat preservation device, the problems that the existing common low-body-temperature recovery modes mainly comprise infusion heating, passive heating, active heating and the like, the modes are mainly achieved through heating devices such as metal resistance wires, direct contact between limbs and air is blocked to reduce the heat dissipating capacity, heat is supplied to maintain the core body temperature of a patient, however, the modes are slow in raising the temperature of the patient and poor in stability can be solved.

The invention discloses a spray type cabinet heat dissipation system. The system comprises a spraying phase change heat absorption module, a liquid storage tank, a pre-cooling module, a liquid circulating pump and insulating cooling liquid, wherein the spraying phase change heat absorption module, the liquid circulating pump, the liquid storage tank and the pre-cooling module form a phase change heat dissipation circulating loop, the insulating cooling liquid flows in the phase change heat dissipation circulating loop, and the spraying phase change heat absorption module comprises a liquid inlet pipe, a controllable spraying device, a steam condensation module, a liquid recovery module and a liquid return header pipe; the steam condensation module is positioned above a server in the cabinet and comprises a steam condensation surface, a cold source channel and a cooling chamber; functional condensation units are orthohexagnal, the centers of the functional condensation units protrude, and the peripheries of the functional condensation units are low. According to the invention, the liquid recovery efficiency is effectively improved; the controllable spraying device, the steam condensation module and the pre-cooling module are integrated in the cabinet, the structure is compact, and modular production is easy.