12results about How to "Guaranteed cooling rate" patented technology

The invention discloses a cascade refrigeration system flow control method and device, refrigeration equipment and a medium, a cascade refrigeration system comprises a low-temperature-stage compressor, a high-temperature-stage compressor, an intermediate heat exchanger, a temperature sensor, a condensation fan and a cooling rate sensor, and the temperature sensor is arranged in the intermediate heat exchanger. The real-time temperature monitored by the temperature sensor is synchronously obtained, and the operation duration of the low-temperature-stage compressor is recorded; the operation state of the low-temperature-stage compressor is judged according to the real-time temperature and the operation duration; and if the low-temperature compressor is in the low-flow operation state, a low-flow response mode is started. The flow condition of the low-temperature compressor during starting is judged according to the temperature detected by the temperature sensor and the calculated instantaneous cooling rate, and flow control is performed according to the instantaneous cooling rate, so that the problems of low refrigerant flow and slow cooling rate caused by liquid accumulation in the intermediate heat exchanger during starting of the low-temperature compressor are solved.

This invention provides a wind-cooled horizontal freezer and its operation control method. The freezer includes: an inner liner having a bottom wall and a stepped wall bent upwards from the bottom wall; a cover plate installed in the inner liner, forming a refrigeration chamber with the inner liner, wherein an evaporator in the refrigeration chamber is arranged side by side with the stepped wall in the left-right direction; multiple air outlets located in the upper part of the storage compartment; an auxiliary air outlet located in the lower part of the storage compartment; and a control system configured to: upon receiving a compressor start command, control the compressor to run, control the fan to run, and control the fan to deliver air to the storage compartment through the multiple air outlets but not through the auxiliary air outlets; during this process, when a human body signal is sensed, control both the multiple air outlets and the auxiliary air outlets to deliver air, or control the multiple air outlets to stop delivering air while the auxiliary air outlets deliver air.

The present application relates to a high-efficiency and energy-saving tubular heat exchanger, and relates to the technical field of heat exchangers, which includes a heat exchanger body, a heat insulation box arranged outside the heat exchanger body, and a drive box arranged on the heat insulation box. The inner side of the heat insulation box is provided with a processing mechanism for scraping, spraying, blowing and measuring the temperature of the outer wall of the heat exchanger body. The processing mechanism includes a scraping assembly, a water spraying assembly, a blowing assembly and a temperature measuring assembly. The temperature measuring assembly can control the amount of water in the water spraying assembly; the heat exchanger body is provided with an adjustment assembly for rotating and adjusting the scraping assembly, the cooling assembly and the temperature measuring assembly. The present application can measure the temperature while the outer wall of the heat exchanger is cooled, and can adjust the amount of liquid water sprayed according to the temperature of different positions on the outer wall of the heat exchanger, so as to ensure the speed and effect of cooling the outer surface of the heat exchanger body, recycle the condensed water discharged from the tubular heat exchanger, and ensure the performance and effect of the tubular heat exchanger.

The utility model belongs to the technical field of molds, and particularly relates to a balanced cooling mechanism for a mold core of a PET (Polyethylene Terephthalate) bottle preform injection molding mold. The PET bottle preform injection molding die comprises a PET bottle preform injection molding lower die, a PET bottle preform injection molding middle die and a PET bottle preform injection molding upper die. In the injection molding process, the ET bottle preform injection molding lower mold, the PET bottle preform injection molding middle mold and the PET bottle preform injection molding upper mold are attached to one another, so that the multi-cavity bottle preform molding lower part, the multi-cavity bottle preform molding middle part and the multi-cavity bottle preform molding upper part are communicated to form a complete bottle preform cavity; after injection molding is completed, cooling liquid is injected into the multi-runner balanced cooling assembly, the multiple formed bottle blank plastic parts are synchronously cooled through the multi-runner balanced cooling assembly, the mode of cooling from the middle to the upper end and the lower end is adopted, and the cooling speed of the plastic parts is ensured; the upper and lower cooling time is consistent, and the overall quality of the plastic part is improved.

The utility model discloses a wire drawing device capable of cooling, which comprises a thick wire unreeling device, a wire drawing processor, a metal wire cooling assembly and a thin wire reeling device which are fixedly arranged at the top end of a bearing base in sequence, and the metal wire cooling assembly comprises a water circulation base and a metal wire cooling box for bearing cooling oil. The multiple metal wire cooling boxes are sequentially connected and fixedly installed at the top end of the water circulation base, and a second guide connecting shaft is rotationally installed on the lower portion of an inner cavity of the bearing outer box. A main body of the metal wire cooling box is arranged to be a bearing outer box, a heat preservation inner cushion layer is fixedly connected to the inner wall of the bearing outer box, and a second metal wire guide roller is rotationally installed in the middle of the outer wall of a second guide connecting shaft. The metal filaments are cooled through the three metal wire cooling boxes, the metal filaments are cooled in a stepped mode through air and cooling oil at different temperatures, and the toughness of the metal filaments is improved on the basis that the cooling speed, hardness and abrasion resistance of the metal filaments are guaranteed.

The invention discloses a device and method for preparing boron trichloride gas. An electric heating fixing barrel is connected to the inner side of a positioning operation frame, a transmission motor is installed at one end of the electric heating fixing barrel through a motor base, a double-shaft motor is installed at the other end of the electric heating fixing barrel through a motor base, and a storage overturning barrel is clamped to one end of one output shaft of the double-shaft motor; the raw materials are stirred through two sets of overturning, air is evenly fed, the heating area and the air contact area are increased, the raw materials are preheated in cooperation with heat circulation, the temperature of finished products is reduced, and the heat efficiency is improved. According to the technical scheme, the condition that the reaction is influenced by equipment cooling caused by insufficient contact area and too low raw material temperature during production can be avoided, and the condensation speed of boron trichloride is accelerated through finished product heat dissipation cooling and condensation cooling, so that rapid exhaust is realized, and the speed of a finished product is ensured.

The invention provides an automatic paper film compounding line, and relates to the technical field of paper film compounding equipment. A film roller is rotationally arranged on the equipment frame body, a film is wound on the film roller, a paper roller is further rotationally arranged on the equipment frame body, and paper is wound on the paper roller; a first conveying assembly is installed on the equipment frame body, the first conveying assembly is composed of two first conveying rollers and a first motor, the two first conveying rollers rotate on the equipment frame body, and the inner sides of the two first conveying rollers make contact with the top end face and the bottom end face of a film respectively. Automation and high efficiency are achieved, through automatic conveying of the first conveying assembly and the second conveying assembly, rapid and continuous conveying of paper and films is achieved, and the production efficiency is improved; automatic operation of automatic pressing of the hot pressing roller and subsequent drying, cooling and winding steps is achieved, manual intervention is reduced, and the overall production efficiency is improved.

The utility model relates to the technical field of medical instruments, and discloses a balloon catheter for mild hypothermia treatment, which comprises a catheter and a balloon, the catheter is provided with a liquid inlet cavity, a liquid outlet cavity and a guide wire cavity which extend along the axial direction of the catheter, the liquid inlet cavity is arranged close to the outer wall of the catheter, the liquid outlet cavity is arranged close to the center of the catheter, and the liquid inlet cavity and the liquid outlet cavity are communicated at the far end of the catheter; the balloon is sleeved and fixed outside the catheter, a liquid spraying pipe is further arranged on the part, located in the balloon, of the catheter, the liquid spraying pipe is communicated with the liquid inlet cavity and the interior of the balloon, and the cross section area of the liquid spraying pipe is smaller than that of the liquid inlet cavity; a liquid outlet is further communicated between the balloon and the liquid inlet cavity so that circulation of cooling liquid in the balloon can be achieved. The liquid inlet cavity is arranged on the outer side of the liquid outlet cavity, so that the heat exchange efficiency of the guide pipe and external substances is improved; by arranging the balloon, the heat exchange surface area is increased, and the cooling rate is increased; by arranging the liquid spraying pipe, the fountain effect and the vortex phenomenon are formed in the balloon, and the heat exchange efficiency of the balloon and the blood is further improved.

The invention discloses a production method for improving the production plate shape of pipeline steel. The pipeline steel comprises the following chemical components in percentage by mass: 0.02-0.09% of C, 0.6-1.80% of Mn, less than or equal to 0.30% of Si, less than or equal to 0.020% of P, less than or equal to 0.005% of S, less than or equal to 0.00005% of N and the balance of iron and inevitable impurities. The method has the advantages that the cooling uniformity of the pipeline steel in the rolling direction is improved by controlling the austenitizing temperature, optimizing the rolling schedule and adopting the process of sectional water ratio and sectional cooling, so that the production plate type of a steel plate is improved.

The invention discloses a baking oven applied to copper-clad ceramic substrate production, and belongs to the technical field of baking ovens, the baking oven comprises a foundation bottom plate, four supporting legs are fixedly connected to the foundation bottom plate, an arc-shaped mounting plate is fixedly connected to the supporting legs, two channel steel supports are fixedly connected to the foundation bottom plate, and the arc-shaped mounting plate is fixedly connected to the channel steel supports. The two channel steel supports are fixedly connected with an ethanol steam generator and a linkage type water supply tank respectively. The spiral heating resistance wire and the heating unit are arranged in the baking furnace, heat source distribution is more uniform, it can be ensured that heat is effectively transmitted to all corners, the temperature difference between the center area and the edge area is minimized, airflow distribution in the baking furnace is more controllable by arranging the convection adjusting mechanism, and the baking efficiency is improved. The air flow can be more dispersedly and stably covered in the baking furnace, the cooling rate can be safely controlled by arranging the ethanol steam generator and the linkage type water supply tank, and meanwhile the cooling rate and the temperature uniformity can be guaranteed.

The present invention discloses a baking furnace applied to the production of copper-clad ceramic substrates, belonging to the technical field of baking furnaces, comprising a base plate, four legs fixedly connected to the base plate, an arc-shaped mounting plate fixedly connected to the legs, two channel steel brackets fixedly connected to the base plate, and an ethanol steam generator and a linkage water supply box fixedly connected to the two channel steel brackets. The present invention arranges a spiral heating resistor wire and a heating unit in the baking furnace, so that the heat source is distributed more evenly, which can ensure that the heat is effectively transferred to each corner, so that the temperature difference between the central area and the edge area is minimized, and by arranging a convection regulating mechanism, the airflow distribution in the baking furnace is more controllable, and the airflow can be more dispersed and stably covered in the baking furnace, and by arranging an ethanol steam generator and a linkage water supply box, the cooling rate can be controlled more safely, and the cooling rate and temperature uniformity can also be ensured.

A bottom-injection turbocharger turbine wax mold molding die includes: a mold base plate with a first cooling medium channel and a second cooling medium channel; an end insert, one axial end of which has an irregular end structure, and the other axial end of which is fixedly connected to the mold base plate; and a gate insert assembly, including a tubular outer sleeve, which is sealed between the inner hole of the end insert and the mold base plate. An inner tubular component is inserted through the outer sleeve, and the outer wall of the inner tube has a groove. The groove and the inner wall of the outer sleeve enclose a third cooling medium channel, which connects the first and second cooling medium channels. The inner hole of the inner tube serves as a wax injection channel. The cooling medium cools the wax in the wax injection channel to form a wax rod, thereby increasing the cooling speed of the gate insert and ensuring good connection between the wax rod and the wax mold, while improving production cycle time and ensuring production continuity.