134results about How to "Fast heating and cooling" patented technology

The invention provides a wall-mounted air conditioner which comprises a shell. An air intake vent and at least one air outlet are formed in the front portion of the shell. The wall-mounted air condition further comprises a heat exchanger, a front panel, a centrifugal fan, an air duct, independent ventilation parts and a controller. The heat exchanger is arranged at the air intake vent; the front panel is located in front of the heat exchanger and is rotatably mounted at the air intake vent so as to open or close the air intake vent; the centrifugal fan corresponds to the air intake vent and is located at the back of the heat exchanger; the air duct is formed in the shell and is used for communicating the air intake vent and the air outlets; the independent ventilation parts are arranged at the positions of the air outlets and supply air inwardly within 360 degrees; the controller is used for controlling the centrifugal fan, the independent ventilation parts and the front panel to act. The wall-mounted air conditioner has the advantages of little power consumption, convenience and flexibility in use, far air supplying distance, high room cooling and heating speed and good comfortableness, and multidimensional and 360-degree designated air supply can be flexibly realized.

A refrigeration system for an automobile air conditioner comprises a direct-current power supply, an electronic controller, a mode select switch, a plurality of semiconductor refrigeration pieces, a voltage-regulating control PWM (pulse-width modulation) device, a refrigeration piece select device, an in-automobile temperature sensor, a chair pressure sensor, an air-blast fan, a radiator fan and a temperature-regulating button, wherein the input end of the electronic controller is connected with the mode select switch, the in-automobile temperature sensor, the chair pressure sensor and the temperature-regulating button; the output end of the electronic controller is connected with the refrigeration piece select device; and the electronic controller can drive one or more semiconductor refrigeration pieces to work for refrigeration selectively according to temperature values and chair pressure values detected by the in-automobile temperature sensor and the chair pressure sensor as well as the temperature values set by the temperature-regulating button.

The invention discloses a step motor control method and device for an air conditioner. The step motor control method for the air conditioner comprises the following steps of regulating an instruction according to an air guide plate to control a step motor to operate in an operation process of the air conditioner, and driving the air guide plate to rotate to the position; when the air guide plate rotates to the position, recording the operation step number, relative to a closed state of the air guide plate, of the step motor; and when the air conditioner is shut down, controlling the step motor to return to operate according to the operation step number, recorded at the last time, of the step motor, and enabling the air guide plate to return to the closed state. The step motor control method for the air conditioner shortens a return process of the step motor of the air conditioner, so that refrigerating/heating speed of the air conditioner is increased, and the service life of the step motor of the air conditioner is prolonged; and meanwhile, the step motor control method for the air conditioner further can reduce noises in a return process of the step motor, so that user experience is improved.

The invention relates to the field of biochemical equipment and provides gene sequencing equipment, which comprises a sequencing reaction chamber and a temperature control component. The sequencing reaction chamber is used for fixing samples and performing sequencing reaction; the temperature control component is fixed in an area of the sequencing reaction chamber when the samples are fixed and used for controlling temperature of the sequencing reaction chamber. The temperature of the sequencing reaction chamber rises and decreases quickly by the temperature control component, and sequencing reaction efficiency is improved.

A device for detecting moisture isothermal adsorption and desorption of biomass comprises a gas premixing system, a constant temperature control system, a humidity control system, a weighing system, a data collecting and recording system, and the like. The device has the advantages that (1) working temperature and humidity intervals are wide, wherein the adjustment ranges of the temperature and humidity are as follows: the temperature ranges from 5 DEG C to 50 DEG C, the control accuracy is 0.3 DEG C, the relative humidity ranges from 5% to 95%, and the control accuracy is 3%; a constant temperature tank inner container is made of high heat conduction metal so that the temperature stability is good; and the device is provided with an external heating and refrigerating circulation device so that heating and refrigerating are fast, and reliability and stability of a test are ensured; (2) the weighing system is arranged in the device with the quality measurement range of 100g and accuracy of 0.0001g; weight information of a test sample can be continuously collected through a computer so that inconvenience of frequent sampling is avoided, influences on test conditions during sampling are removed, and the test is ensured to be performed under stable conditions; and (3) test parameters are conveniently set and can achieve automatic adjusting and real-time monitoring.

The invention discloses solar polycrystalline silicon purification equipment employing the directional solidification metallurgical method. The solar polycrystalline silicon solidification equipment comprises a furnace body and a trolley, wherein a movable door is arranged on one side surface of the furnace body; the trolley can move in and out of the furnace body; a heat preservation and insulation layer is arranged on the trolley, an ingot mold is supported on trolley, and movable wheels are arranged at the lower part of the trolley; a heat preservation and insulation layer is arranged on the inner wall of the furnace body, and a heat dissipation ventilation pipe is arranged on the furnace body; a thermoelectric couple is arranged on the furnace body; a heating silicon carbide rod is arranged on the top of a hearth of the furnace body; and the thermoelectric couple and the heating silicon carbide rod are electrically connected with a control system outside the furnace body. With the adoption of the solar polycrystalline silicon purification equipment, the efficacies of low manufacturing cost, high capacity and low power consumption are realized, the metallurgical method that silicon material is directly subjected to atmospheric high-capacity directional solidification purification after the smelting procedure is finished is also realized, the yield and the purification effect of cast ingot are improved, and furthermore, the production cost is reduced, and the large-scale production is realized.

The invention relates to a double-cylinder variable-capacity air conditioning system and a control method thereof. The double-cylinder variable-capacity air conditioning system comprises a double-cylinder variable-capacity compressor, a four-way valve, an outdoor heat exchanger, a throttling assembly and an indoor heat exchanger which are connected to be a loop, and further comprises an electronic expansion valve, wherein the outdoor heat exchanger is equipped with a temperature sensor for detecting the temperature of an outdoor heat exchanger coil pipe; and a pressure sensor for detecting pressure of the air conditioning system is arranged on a pipeline between a gas outlet of the double-cylinder variable-capacity compressor and the outdoor heat exchanger. According to the double-cylinder variable-capacity air conditioning system and the control method thereof, stable regulation can be carried out according to practical parameters to keep temperature stability, so that temperature difference fluctuation is small; and the double-cylinder variable-capacity air conditioning system saves energy and is comfortable, and reliability of the system is improved.

The invention belongs to the technical field of test apparatuses, and particularly relates to a vacuum thermal shock testing machine. The machine comprises a support, a controller, an induction powersupply, a temperature measuring device and a vacuum chamber. The support is provided with a vacuum chamber frame body, the vacuum chamber and a cooling device. The vacuum chamber frame body is provided with an air inlet hole and an air suction hole in order to realize thermal shock test in a vacuum environment or a protection gas environment. A crucible is arranged in the vacuum chamber, a test sample is placed in the crucible, the crucible is heated according to an induction heating principle, and a fiber cover sheet is placed on the crucible to achieve heat insulation. The temperature is measured by the temperature measuring device and is displayed in a temperature display, and the controller can automatically start or stop heating for achieving an assigned temperature and set the numberof shocks. Compared with test machines in the prior art, the vacuum thermal shock testing machine in the invention can carry out vacuum high-temperature thermal shock test, can control the vacuum degree and the thermal shock during experiments, and has the advantages of fast temperature rising speed, three-dimensional integral and compact structure, small occupied area, simple structure and wideapplication range.

The invention discloses a constant-temperature air bath device and a method for detecting a temperature controller thereof and testing the aging of the temperature controller. The device comprises an outer box body, an upper cover, a heating cavity and an air feed and discharge mechanism, wherein the outer box body is internally provided with the heating cavity, the side of the outer box body is provided with an air feed and discharge fan, the top part of the outer box body is provided with a control switch, the air feed and discharge mechanism is arranged below the upper cover, the side of the upper cover is provided with an air discharge fan, the side and the upper of the upper cover are respectively provided with a heat-preservation layer, the heating cavity is connected with the outer box body through a supporting column, and the air feed and the discharge mechanism is clung to a protective cover in the heating cavity through a sealing ring. Compared with the prior art, in the invention, the heating cavity is circular, air flow ring-shaped circulation and sample circumferential positioning are combined, and the accurate temperature control is realized by an air heat-conduction mode. Simultaneously, in the invention, the temperature in the heating cavity is uniformly distributed, and can be quickly raised and reduced, and the heat-preservation and heat-dissipation effects are good.

The invention discloses a double fluorescent lyophilized microchip, a kit and a method for the novel coronavirus (2019-nCoV). The kit comprises the lyophilized microchip, a tube of mineral oil, a tubeof positive control, a tube of negative control, a tube of diluent and a tube of nuclease-free water, wherein the lyophilized microchip is coated with a primer, a probe, Taq enzyme, reverse transcriptase, trehalose, Tris-Cl, dNTP, Mg<2+>. According to the lyophilizing condition, the temperature of an insulator is reduced to negative 55 DEG C at a pre-freezing stage; pre-freezing is kept for 1 hour, and equipment is used for vacuumizing, and freeze-drying is kept for 1 hour; in an analytic drying stage, the temperature of the insulator is increased to negative 25 DEG C and kept for 1 hour, isincreased to 37 DEG C and kept for 2 hours and is reduced to 25 DEG C and kept for 1 hour to obtain the lyophilized microchip, and the diluent and sample nucleic acid are added during use. The doublefluorescent lyophilized microchip can be used for simultaneously detecting an ORF 1a/b gene and an N gene. The detection kit and detection method have high accuracy, high specificity, high sensitivityand short detection time.

The invention relates to a manufacturing method for a dissimilar alloy integral blade disc structure. The method comprises the steps that a blade disc is rotationally and axially mounted on a high-conductivity metal support base through a high-conductivity metal support shaft, and the support base is mounted on a graphite electrode bottom plate; and after blades and the blade disc are assembled, discharge plasma diffusion welding is adopted for welding, during welding, the upper portions of the blades are pressed through a graphite electrode pressing block, direct current pulse current is connected between the graphite electrode pressing block and the graphite electrode bottom plate, discharge plasma is generated, diffusion welding of the blades and the blade disc is rapidly achieved underthe action of impact pressure, joule heat and an electric field, all the blades are welded to the blade disc, and the integral blade disc is obtained, wherein the blades and the blade disc are prepared from different alloys. Through the discharge plasma diffusion welding method, the problems of high manufacturing difficulty and high scrap rate of integral blade discs are solved, the performance and economic complementarity advantages of the dissimilar alloys are fully achieved, and the demand for the high performance integral blade disc of aeroengines is met.

This invention is about the decomposition method of compound, especial about the method for depositing charcoal and carbide. The conducting layer is made up of tungsten filament, molybdenum filament and graphite layer; through the conducting layer the physical field is adjusted and controlled. We put charcoal / charcoal combined material body into the chemical gas phase depositing furnace, where the depositing temperature is controlled between 600deg.C and 1100deg.C. The carbon hydrogen gas is filled as reaction gas, while Ar or N2 is used as dilution gas. The concentration of the carbon hydrogen gas is from 5% to 100%, and the flow of the reaction gas should be between 0.2 and 1.2 square meters per hour.square meters. If you choose this invention, the densification speed of the carbon / carbon combined material can be increased, and the producing time can be reduced. You can adjust and control the structure of the thermal decomposition charcoal, and the density and uniform is good. Also, you can reduce the producing cost.

The invention discloses an analysis device for integrated nucleic acid extraction and amplification detection based on a smart phone and a method thereof, which relates to the key technical field of intelligent medical instruments. According to the analysis device, the smart phone is used as a main component, the smart phone is integrated with microfluid driving, temperature control and multicolorfluorescence detection, a portable multifunctional universalization device integrating nucleic acid extraction, amplification and detection is formed, the device is combined with a micro-fluidic chip; on-chip nucleic acid extraction, isothermal amplification qualitative detection and detection of real-time fluorescent quantitative PCR (Quantitative Real-time PCR,qPCR) and multiple fluorescent PCR(Multiplex PCR) are realized, and analysis and detection of pathogen nucleic acid are realized. The analysis method comprises the steps of nucleic acid extraction, system configuration, system loading, temperature setting, image acquisition, image processing and result storage and sharing. The smart phone is used as a main component, the size is small, the cost is low, the functions are complete,the applicability is high, and the detection method is diversified.

The invention discloses a pulse discharge flash sintering metal-based part near-net forming technology method, and belongs to the technical field of powder metallurgy. The problems that a traditionalpowder metallurgy part production process is high in power consumption, tedious and complex in process flow and low in production efficiency are solved. The method mainly comprises the steps of pushing metal powder into a mold, and forming the metal powder through stamping; enabling the inner wall, making contact with the metal powder, of the mold to have the insulation property; and enabling stamping to serve as an electrode of a pulse discharge body, and enabling stamping to synchronously carry out pulse discharge in the metal powder forming process. According to the method, the process flowis greatly simplified, large-scale industrialized application is easily achieved, the near-net forming advantage is achieved, the product quality is high, porosity adjusting control is convenient, practicality is high, and the method has the important significance in the powder metallurgy industry manufacturing field.

The invention discloses a pre-treatment system for a nanocrystalline magnetically soft alloy strip. The system comprises a feeding device and a thermal treatment device, wherein the feeding device is used for feeding, tightening, guiding and collecting the nanocrystalline magnetically soft alloy strip along a route at the preset feeding speed; the thermal treatment device comprises a first heating roller, a heating unit, a constant-temperature unit and a cooling unit; the heating surface of the first heating roller is tightly attached to one side face of the nanocrystalline magnetically soft alloy strip; the heating unit is used for heating the other side face of the nanocrystalline magnetically soft alloy strip and the heating unit and the first heating roller heat the same region of the nanocrystalline magnetically soft alloy strip; the nanocrystalline magnetically soft alloy strip heated through the first heating roller and the heating unit is heated and heat is preserved through the constant-temperature unit; and the nanocrystalline magnetically soft alloy strip which is heated at the constant temperature is cooled through the cooling unit. The invention further discloses a pre-treatment method for the nanocrystalline magnetically soft alloy strip. The system and method have the beneficial effects that the heating roller tightly-attaching heating manner and the double-face synchronous heating manner are adopted, the temperature increase and decrease speed is high, operation is convenient, temperature and time control accuracy is high, and the treated strip is flat and straight.

Disclosed is a method for preparing a magnesium diboride superconductive Josephson junction through a secondary mask method. According to the method, an electron beam is adopted to carry out annealing on an interlayer type (sandwich type) magnesium diboride Josephson junction precursor film. The interlayer type magnesium diboride Josephson junction precursor film is a (Mg/B)-X-(Mg-B) structure precursor film prepared through the secondary mask method, X represents a standard conductor layer N or an insulation layer I, magnesium elementary substance and boron elementary substance in the precursor film are made to generate a chemical reaction within the annealing time of a second magnitude order, finally the SNS type or SIS type magnesium diboride superconductive Josephson junction of a MgB2-X-MgB2 structure is generated, and S represents a superconductive layer.

The invention provides a harmonica channel type heat exchanger, aiming at solving the problems that for a pure electric vehicle and a serial hybrid electric vehicle, an air heat exchanger difficultly meets a battery heat management effect. The harmonica channel type heat exchanger is characterized by comprising a plurality of groups of heat radiation assemblies which are arrayed in parallel at intervals, wherein each heat radiation assembly comprises a first current collector, a second current collector, and a water cooling plate for communicating the first current collector and the second current collector; the first current collector is provided with two water pipe connectors; the first current collector of the heat radiation assembly at one side is connected with a water inlet pipe, and the first current collector of the heat radiation assembly at the other side is connected with a water outlet pipe; the first current collectors of all the heat radiation assemblies are communicated with each other by a middle water pipe; batteries are arranged at the two sides of the water cooling plates of each heat radiation assembly; and the batteries and the water cooling plates are clamped and firmly fitted. The harmonica channel type heat exchanger has the advantages that the heat radiation assemblies are arrayed in parallel at intervals, and are clamped and firmly fitted with the batteries, so that the water cooling effect is realized; the structure is relatively simple and compact and the cost is low, the heat-exchanging coefficients are relatively high, the cooling and heating speed is rapid, the safety performance is high and the effect is relatively good.