11results about How to "Low cooling temperature" patented technology

The invention relates to an ice crystal evaporator and an ice crystal water cooling device producing from the same, belonging to the technical field of refrigeration. The ice crystal evaporator is characterized in that a liquid inlet channel is formed by an evaporator tube, a liquid inlet and a liquid outlet in a tubular casing; and the outer channel of the evaporator tube of the tubular casing is divided into more than one S-shaped channel forming a water return channel through a water inlet of a water divider and a water outlet of a water collector. The ice crystal water cooling device is characterized in that the return air inlet of the ice crystal evaporator is communicated with a compressor, a condenser, a liquid feeding valve, a dry filter, a liquid feeding electromagnetic valve anda thermostatic expansion valve in sequence, and then is communicated with the liquid inlet of the ice crystal evaporator; a cooling water inlet / outlet of the condenser is connected with a cooling tower in series; and a water inlet / outlet of the ice crystal evaporator is communicated with a water circulating pump and an ice crystal energy storage tank in series. The invention has the advantages ofhigh cooling efficiency, no icing and low cooling temperature and is suitable for production of energy storage central air-conditioning, marine fishing, seafood processing, fruit, vegetable or meat processing, and the like; the cooled medium is municipal water.

The invention belongs to the field of cable production, and particularly provides cable production equipment which comprises an extruding machine, an extruding mold, a first cooling assembly and a second cooling assembly, the first cooling assembly comprises a shell, a semiconductor chilling plate and a cooling fin, the shell is provided with a cooling channel, the semiconductor chilling plate can refrigerate the shell, and when a core wire penetrates through the cooling channel, the cooling fin can cool the shell. The outer surface of the insulating layer is subjected to cold air emitted by the shell in the whole circumferential direction, the outer surface of the insulating layer generates contractive surface tension after being cooled, and the outer layer of the insulating layer can restrain the insulating material, still in a molten state, of the inner layer to gather towards the center of the core wire under the action of the surface tension, so that the insulating layer returns to a round state, and the service life of the core wire is prolonged. Therefore, the sagging phenomenon caused by gravity is eliminated, and the production roundness of the cable, especially a thick-wall cable, and the coaxiality of core wires are ensured. And then the core wire enters the second cooling assembly, and the second cooling assembly can perform multi-stage cooling on the insulating layer, so that stress is prevented from being generated in the insulating layer, and the product quality is ensured.

The utility model provides a cooling device and slurrying tank wherein the cooling device comprises: a tank body, the tank body is internally provided with a cylindrical accommodating cavity and a cooling channel suitable for accommodating a refrigerant, the cooling channel is arranged along the circumferential direction of the accommodating cavity, the cooling channel extends along the axial direction of the accommodating cavity, the tank body is provided with an inlet and an outlet, the inlet and the outlet are spaced in the axial direction of the containing cavity and communicate with the cooling channel, and the inlet is lower than the outlet. According to the cooling device disclosed by the utility model, the cooling channel is arranged in the circumferential direction of the accommodating cavity of the tank body, so that the inlet is lower than the outlet, and the slurry is cooled by adopting the refrigerant, so that not only can the refrigerant be utilized to obtain lower cooling temperature and increase heat transfer temperature difference, but also the refrigerant can be uniformly distributed around the accommodating cavity at the bottom of the cooling channel; and a gas-liquid mixture formed after heat absorption can uniformly move upwards, so that the slurry is cooled more uniformly.

The utility model relates to the technical field of gas collecting devices, in particular to a dichloromethane adsorbing and collecting device which comprises a heating kettle, a reaction container, a waste liquid collecting bottle, a low-temperature cooling circulating pump, a cold trap and a vacuum bottle, the heating pot is used for heating a reaction container containing a mixture; the reaction container is connected with a gas inlet of the waste liquid collecting bottle; a gas outlet of the waste liquid collecting bottle is connected with a gas inlet of the cold trap; the cold trap is arranged in a thermos bottle filled with dry ice; the low-temperature cooling circulating pump is connected with the waste liquid collecting bottle and is used for cooling the waste liquid collecting bottle. Heating the mixture through a heating pot to generate dichloromethane gas, and then carrying out primary liquefaction and collection on the dichloromethane gas in a waste liquid collection bottle; carrying out secondary liquefaction on the dichloromethane gas in the cold trap and collecting the dichloromethane gas; in the secondary liquefaction process, the cooling temperature of the dry ice is lower than the liquefaction temperature of the dichloromethane, and the liquefaction effect on the dichloromethane is better.

The present invention belongs to the field of cable production, and specifically provides a cable production device, including an extruder, an extrusion mold, a first cooling component and a second cooling component. The first cooling component includes a shell, a semiconductor cooling sheet and a heat sink. The shell has a cooling channel, and the semiconductor cooling sheet can cool the shell. When the core wire passes through the cooling channel, the outer surface of the insulation layer is subjected to the cold air emitted by the shell in the entire circumferential direction. The outer surface of the insulation layer generates a shrinking surface tension after being cooled. Under the action of the surface tension, the outer layer of the insulation layer can constrain the inner layer of the insulating material that is still in a molten state to gather toward the center of the core wire, so that the insulation layer returns to a round state, thereby eliminating the sagging phenomenon caused by gravity, and ensuring the production roundness of the cable, especially the thick-walled cable, and the coaxiality of the core wire. Then the core wire enters the second cooling component, and the second cooling component can perform multi-stage cooling on the insulation layer to prevent stress from being generated inside the insulation layer, so that the product quality is guaranteed.

The invention discloses a drying method for fresh traditional Chinese medicinal materials, which comprises the following steps: firstly, primarily drying the cleaned fresh traditional Chinese medicinal materials by using steam, then controlling the initial air expansion pressure ratio by using compressed air, quickly cooling to-20 to-60 DEG C within 10-30 minutes, and finally changing the air expansion pressure ratio to dry. And the refrigerated mixed gas is blown to the surfaces of the traditional Chinese medicinal materials in the form of cold dry air which is 10-30 DEG C lower than the eutectic point of the traditional Chinese medicinal materials, so that the moisture content of the traditional Chinese medicinal materials is reduced to 12% or below. The drying method has the advantages of being high in freezing speed, low in cooling temperature and high in drying speed, enzyme and sensitive chemical components can be comprehensively reserved, the content of the enzyme and the sensitive chemical components is high, the use requirements of the fresh traditional Chinese medicinal materials are met, a theoretical basis is provided for drying treatment of the fresh traditional Chinese medicinal materials, and the cost is reduced. Technical support and reference methods are provided for quality control of traditional Chinese medicinal materials, and the method is suitable for popularization and application.

This invention provides a two-dimensional triangular lattice rare-earth-based titanate polycrystalline material, its preparation method, and its applications. The chemical formula of the rare-earth-based titanate polycrystalline material is Ba6M2Ti4O. 17 The space group is P63 / mmc, where M is one or more of Nd, Gd, and Yb. The novel two-dimensional triangular lattice rare-earth-based titanate polycrystalline material provided by this invention has a compact structure, a simple preparation process, and its frustrated structure of localized electron spins significantly reduces the minimum cooling temperature to the tens of millikons. Furthermore, it exhibits high magnetic ion density and large cooling capacity, making it an excellent magnetic refrigerant.

The present invention provides a low-temperature adsorption refrigeration equipment, comprising an adsorption refrigeration structure and a dilution structure which are connected and communicated with each other, the adsorption refrigeration structure is provided with an adsorption device, the dilution structure is provided with a dilution adsorption device, a mixed working medium is arranged in the adsorption refrigeration structure, in the condensation recovery stage, the adsorption device and the dilution adsorption device are heated, the adsorbed mixed working medium in the adsorption device and the dilution adsorption device is desorbed, and condensed, in the evaporation refrigeration stage, the adsorption device and the dilution adsorption device are cooled, the gaseous part in the mixed working medium is adsorbed, so as to control the pressure drop inside the refrigeration equipment, so that the liquid phase part in the mixed working medium undergoes atomic migration, and adsorption and dilution refrigeration are performed, the adsorption device adsorbs helium vapor on the dense phase side of helium 3, promotes the evaporation of the dense phase to produce a phase change refrigeration effect, the dilution adsorption device adsorbs helium vapor on the dilute phase side, promotes the helium 3 atoms in the dense phase to enter the dilute phase to produce a dilution refrigeration effect, thereby reducing costs and improving refrigeration performance.

Refrigeration equipment comprises an ice container, a heat dissipation device and a controller, the ice container comprises a refrigeration container and a refrigeration piece, the heat dissipation device comprises a heat dissipation waterway board, a circulating water pump, a cold radiator and a circulating water tank, and the heat dissipation waterway board is connected with the hot end of the refrigeration piece through heat conduction silica gel. The heat dissipation waterway plate, the radiator, the circulating water tank and the water pump are connected in series through a pipeline to form a waterway circulating loop; wherein a rotary liquid flow channel structure is formed in an aluminum main body of the refrigeration container. According to the refrigeration equipment, the electronic refrigeration sheet is adopted for refrigeration, meanwhile, the heat dissipation device for circulating water cooling is arranged near the refrigeration sheet, physical space separation of the ice container and a heat dissipation system is achieved, and the problems that condensate water is generated, and the refrigeration efficiency is affected due to the fact that overall foaming heat preservation cannot be conducted on the ice container are solved; and meanwhile, the internal structure of the refrigeration container is designed into a rotary flow channel, so that temperature channeling caused by water replenishing is avoided, the refrigeration efficiency is improved, and the lower refrigeration temperature can be obtained.

The present disclosure provides a container machine room air supply and return system and method, which can be applied to the financial field or other fields. The container machine room air supply and return system includes: a box body; a cabinet room, located in the box body; a refrigeration device, arranged in the box body, and the refrigeration device is connected to the cabinet room; a power distribution room, located in the box body, and the power distribution room is connected to the cabinet room through a first air duct and a second air duct, so that the cabinet room, the first air duct, the power distribution room and the second air duct are connected in sequence to form a loop; and a heat exchange device, arranged outside the box body, the air outlet duct of the heat exchange device is connected to the first air duct, and the air inlet duct of the heat exchange device is connected to the second air duct. The present disclosure can utilize the coordination of the refrigeration device and the heat exchange device to achieve cooling of the internal environment of the container machine room, and avoid excessive temperature affecting the operation of equipment in the power distribution room and the cabinet room.

The invention belongs to the technical field of magnetic drive pumps, and particularly relates to a vertical cooling type magnetic drive pump which comprises a magnetic drive pump body, a water pumping drive end, a liquid inlet pipeline, a liquid discharging pipeline, a vibration reduction type supporting mechanism and a power integrated cooling mechanism. The liquid inlet pipeline is arranged on one side of the water pumping driving end, the liquid discharging pipeline is arranged on the side, away from the liquid inlet pipeline, of the water pumping driving end, the vibration reduction type supporting mechanism is arranged on the upper wall of the magnetic drive pump body, and the power integrated cooling mechanism is arranged on the vibration reduction type supporting mechanism. According to the vertical cooling type magnetic drive pump, the cooling structure can be adjusted according to the vibration frequency of the pump body in the operation process, and the temperature of the pump body in the operation process can be adaptively cooled.