45results about How to "Stable internal temperature" patented technology

The invention discloses a control method, device and system of an oven fan and an oven, wherein the method comprises the following steps of detecting an internal temperature of the oven; under the condition that heating equipment of the oven is in a heating state, increasing the rotational speed of the fan of the oven according to the internal temperature of the oven; and under the condition thatthe heating equipment of the oven is in a state of stopping heating, reducing the rotational speed of the fan of the oven according to the internal temperature of the oven. The control method, deviceand system of the oven fan and the oven solve the technical problem that as the opening period of a relay of the oven is longer, the fluctuation of the internal temperature of the oven in one period is lager, and the internal temperature of the oven cannot be accurately controlled in the prior art.

The invention discloses a dry type transformer, and relates to electrical equipment. The dry type transformer comprises a transformer, wherein a shell is arranged outside the transformer; the transformer is arranged in the shell in a sealed mode; the shell is provided with a vacuum interlayer, and a cable channel is formed in the vacuum interlayer; a gas circulating device is further arranged on the shell; the gas circulating device comprises an air pump and a gas storage tank; compressed nitrogen is stored in the gas storage tank; the shell is further provided with an air inlet and an air outlet which are matched with the gas circulating device; and a heat exchange device is further arranged on the gas circulation device. Compared with the prior art, the dry type transformer is sealed ina shell full of nitrogen, so that external dust and impurities are isolated, and the constant-temperature and constant-humidity in the shell can be kept; and due to the fact that no oxygen exists, oxidation reaction is completely eradicated, so that the service life of the dry type transformer is greatly prolonged, and the occurrence rate of faults is reduced. Moreover, after the dry type transformer is exploded, the occurrence of fire disasters can be reduced under the inhibition of nitrogen.

The invention relates to a device for testing cement hydration heat at a constant temperature. The device comprises a computer provided with an automatic temperature control system, a temperature recorder, two metal boxes and a triglyceride box. An iron cylinder is arranged in one metal box, and a foam base plate fixed by wooden base plates on the surrounding is arranged on a lower surface of theiron cylinder; a wide-mouth thermos bottle is fixed in the iron cylinder, and a polystyrene foam plastic cover is arranged at the opening of the thermos bottle; temperature probes I-IV are respectively inserted on the foam plastic cover, and the temperature probes I-IV are respectively connected with the temperature recorder; the triglyceride box is arranged in the other metal box, and a refrigeration compressor and a heater are respectively arranged at the bottom of the triglyceride box; a circulating infusion tube II is arranged on the triglyceride box, and the circulating infusion tube IIis connected with a circulating infusion tube I that is inserted into the foam plastic cover via a metering pump; and the temperature recorder, the refrigeration compressor and the heater are respectively connected with the computer via data lines. The device provided by the invention can achieve automatic test, and the accuracy is high.

The invention relates to the field of virtual reality device manufacturing, and discloses a pair of VR glasses. The pair of VR glasses comprises a glasses body, a heat conduction component and a refrigeration component. The heat conduction component surrounds the edge of the glass body, and the refrigeration component is connected with the heat conduction component and provides a cold source for the glasses body. A heat dissipation structure with the combination of the refrigeration component and the heat conduction component is adopted, so that the heat dissipation efficiency of the edge of the glasses body and an inner cavity of the pair of VR glasses is greatly improved, the temperature on the edge of the inner cavity and the glasses body is lowered, the using comfortableness of the VR glasses is enhanced, the stability is ensured, in addition, due to the fact that the eyes need to be close to the edge of the glasses body when a user uses the VR glasses, the eyes of the user are likely to be uncomfortable when the user wears the pair of VR glasses for a long time, the edge of the pair of VR glasses body is effectively cooled, the temperature of eye sockets is effectively decreased, the user eye fatigue of the user is greatly relieved, and the experience comfort level is improved.

The invention discloses a multiport storage battery vertical charge apparatus. The apparatus comprises a wire box, a plurality of chargers and a plurality of positioning devices. Each positioning device is a cavity, wherein an upper cavity is fixed on an upper wall, the two sides extend outwards to form rain shielding plates, a through hole is arranged at a position, which is close to a rear end, of the upper end surface of a lower cavity, the cavity is internally provided with a rotation shaft, the rotation shaft is fixed on a left cavity and a right cavity, which are close to the through hole, at one side of the rear end of the cavity, a first limiting block and a second limiting block are arranged between the rear end of a lower cavity and the rotation shaft, the distance between the two limiting blocks is greater than the lengths of the chargers, and the height of the wire box is equal to the distance between a socket to the upper wall. Each cavity comprises a fixed portion and a movable portion, the lower ends of the left side and the right side of the fixed portion are provided with threaded holes, connecting holes are arranged at corresponding positions at the upper ends of the left side and the right side of the movable portion, the two portions are fixed through a bolted connection mode, and the left side and the right side of the movable portion are also provided with V-shaped radiating grooves.

The invention relates to an ultra-low-field magnetic imaging device for small living animals, which belongs to the technical field of magnetic imaging, and solves the problems in the prior art that the ultra-low-field magnetic imaging device has a complex structure and is not suitable for scanning large-sized and small animals in vivo . The ultra-low-field magnetic imaging device of the present invention includes a push unit and a magnetometer unit, and the push unit includes a scanning displacement platform, a push rod and an object stage; the scanning displacement stage, the push rod, and the object stage are connected in sequence; the described The magnetometer unit includes a magnetic shield, a scanning channel, an optical channel, an atomic gas pool, and a laser light source and a detector. The scanning channel runs through the side of the magnetic shield, and the atomic gas pool is arranged on one side of the scanning channel. The detector is placed outside the magnetic shield and at one end of the optical channel. The ultra-low-field magnetic imaging device of the present invention has a simple structure, is convenient to assemble and disassemble, and is suitable for scanning large-sized and small animals in vivo on the premise of ensuring ultra-low-field detection sensitivity.

The invention provides Chinese wolfberry glycopeptide purifying and standing equipment and a using method thereof, and relates to the technical field of Chinese wolfberry glycopeptide purification. The Chinese wolfberry glycopeptide purifying and standing equipment comprises a bottom plate, a heat preservation liquid circulating cylinder is fixedly installed on the upper surface of the bottom plate through a support, and connecting pipelines are arranged at the two ends of the heat preservation liquid circulating cylinder; the two connecting pipelines are fixedly connected with a first heat preservation liquid circulating pipeline and a second heat preservation liquid circulating pipeline correspondingly, the first heat preservation liquid circulating pipeline and the second heat preservation liquid circulating pipeline are fixedly connected to an inlet and an outlet of a heat preservation liquid circulating water pump correspondingly, and a first material pumping pump is arranged at the joint of the feeding pipeline and the upper cover; and a standing cylinder is fixed on the upper surface of the bottom plate. According to the lycium barbarum glycopeptide dialysis equipment, the lycium barbarum glycopeptide dialysis area is reduced, meanwhile, lycium barbarum glycopeptide can be filtered for multiple times, the purity of lycium barbarum glycopeptide preparation is improved, the problem of dialysis membrane blockage of the equipment is avoided, the production rate is increased, and the quality of lycium barbarum glycopeptide production is improved.

The invention discloses a preparation device for gallium nitride thin film, specifically relates to the technical field of gallium nitride thin film preparation, comprising a preparation chamber and an evaporation chamber, the evaporation chamber is fixedly connected to the bottom end inside the preparation chamber, and the evaporation chamber A quartz crucible is fixedly connected inside, and a heating wire is fixedly connected inside the quartz crucible, an ionization chamber is fixedly connected to the top of the evaporation chamber, and an insulating structure is arranged on the outer wall of the preparation chamber. The present invention is provided with a cavity, a shell, a connecting rod, a nut, a through hole and thermal insulation rock wool. When in use, the nut and the through hole are used to fix the shell on the outside of the preparation bin. At this time, a gap is formed between the preparation bin and the shell. Cavity, and then fill the cavity with thermal insulation rock wool, using the thermal insulation performance of thermal insulation rock wool, this can avoid the rapid loss of heat inside the preparation chamber, so that the internal temperature of the preparation chamber can be kept stable, and the preparation of GaN thin films can be improved. the quality of.

The invention relates to the technical field of packaging materials, and discloses a device for preventing condensation and air pollution in plastic manufacturing. The device comprises a shell, wherein a driving rod is in transmission connection with the bottom of the shell, a processing disc is fixedly installed at the top end of the driving rod, a stirring rod is rotationally connected into the processing disc, a coil is fixedly installed on the periphery of the stirring rod, a magnetic block is fixedly installed on the inner wall of the processing disc, and a resistor strip is fixedly installed in the processing disc. According to the device for preventing condensation and air pollution in plastic manufacturing, in the plastic melting process, the stirring speed of the stirring rod is adjusted according to the melting speed, so that the stirring quality of raw materials is improved, energy is effectively saved, after the raw materials are heated, the temperature of the raw materials is kept stable, equipment damage caused by raw material solidification is effectively prevented, harmful gas generated in the processing process is absorbed, and the gas is prevented from entering the atmosphere to pollute the environment.

The invention discloses a vacuum nesting type high-efficiency cold-resistant structural material. The material is composed of a cold-resistant layer, a heat-insulating material and an interior trimming layer, wherein the cold-resistant layer is composed of a cold-resistant long-glass-fiber reinforced cold-resistant resin material, and the outer surface of the cold-resistant layer is coated with alayer of high-cold-resistance coating; the interior trimming layer consists of a base fabric layer, a supporting layer, a cold-resisting layer and a surface layer, the base fabric layer is a mesh nonwoven layer, the supporting layer is a polyurethane foam layer, the cold-resisting layer is a polyether polyol layer, the surface layer is a polycarbonate layer, and the upper part of the surface layeris provided with a waterborne polycarbonate polyurethane resin surface treatment layer; and a sealed vacuum structure is located between the cold-resistant layer and the interior trimming layer, theinterior of the sealed vacuum structure is filled with a thermal insulation material, and the thermal insulation material is composed of low-thermal-conductivity vacuum insulation boards. The vacuum nesting type high-efficiency cold-resistant structural material disclosed by the invention adopts a vacuum nesting type cold-resistant structure, heat insulation is greatly isolated due to a double-layer vacuum structure, and the internal temperature stability is kept; the surface adopts the cold-resistant layer, and at the same time, the cold-resisting layer is arranged inside, thus the cold-resistant temperature of the cold-resistant layer can reache -40 DEG C to -20 DEG C, and the structure can be served in an alpine environment.

The invention discloses a glass hot bending furnace, which comprises a frame, a material trolley slidably supported on the frame, a driving device for driving the material trolley to move, and a power device for providing power for the driving device. It is a closed circular flexible guide rail, which is rotatably installed on the frame, and the material trolley is connected with the flexible guide rail; the frame is provided with a hot bending furnace functional area along the running direction of the flexible guide rail. The glass bending furnace of the present invention changes the shape structure and operation mode, has more functional areas and mold bricks of the bending furnace under the same floor area, and effectively improves the glass bending efficiency.

The invention discloses a dry-tank freezing method of giant panda seminal fluid. The dry-tank freezing method comprises the following steps: (1) diluting collected giant panda seminal fluid through a diluent in 30 to 33 DEG C; (2) putting the diluted giant panda seminal fluid into 4 DEG C environment to be balanced; (3) adding an antifreeze protective agent into the balanced giant panda seminal fluid and continuously putting in the 4 DEG C environment; (4) transferring the giant panda seminal fluid treated in the step (3) into a container, covering the container in a gauze bag, putting the gauze bag into a dry liquid nitrogen tank, putting the gauze bag at the position 6cm under a tank opening of the dry liquid nitrogen tank, capping and staying for 5min, then putting the gauze bag at the tank bottom of the dry liquid nitrogen tank, sealing and transporting; (5) putting into a general liquid nitrogen tank to be stored after transportation finishes and taking out to be unfrozen in 50 DEG C hot water for 10s when the giant panda seminal fluid needs to be used; or unfreezing for 10s in 50 DEG C hot water to be used after transportation finishes. The method is convenient to operate, is suitable for national parks or field places and has important significance in heredity value storage of wild animals; furthermore, utilized equipment is simple.

The invention relates to the field of virtual reality device manufacturing, and discloses a pair of VR glasses. The pair of VR glasses comprises a glasses body, a heat conduction component and a refrigeration component. The heat conduction component surrounds the edge of the glass body, and the refrigeration component is connected with the heat conduction component and provides a cold source for the glasses body. A heat dissipation structure with the combination of the refrigeration component and the heat conduction component is adopted, so that the heat dissipation efficiency of the edge of the glasses body and an inner cavity of the pair of VR glasses is greatly improved, the temperature on the edge of the inner cavity and the glasses body is lowered, the using comfortableness of the VR glasses is enhanced, the stability is ensured, in addition, due to the fact that the eyes need to be close to the edge of the glasses body when a user uses the VR glasses, the eyes of the user are likely to be uncomfortable when the user wears the pair of VR glasses for a long time, the edge of the pair of VR glasses body is effectively cooled, the temperature of eye sockets is effectively decreased, the user eye fatigue of the user is greatly relieved, and the experience comfort level is improved.

The invention discloses a general drying equipment capable of adapting to fluid materials and fixed materials, comprising a bottom plate and a control panel, a box body is installed above the bottom plate, and an upper sealing cover is hinged on the top of the box body, and the control panel is installed On the right side of the box body, a discharge guide plate is welded on the left side of the box body, a power system is installed on the front and rear sides of the box body, and an ultraviolet germicidal lamp is installed on the bottom screw of the upper sealing cover. A filter screen is inlaid inside the liquid discharge port, and a stirring mechanism is installed inside the stirring hole. The universal drying equipment that can adapt to fluid and fix is ​​equipped with a stirring mechanism. During use, the stirring mechanism can move through the installation plate of the power system and the first electric telescopic rod, and then the stirring shaft of the stirring mechanism is placed in the box. The inside of the device, and the stirring mechanism can rotate through the servo motor and the main pulley of the power system, so that the stirring mechanism can stir the fluid material inside the device.