2results about How to "Increase freezing rate" patented technology

The refrigerating machine with the liquid nitrogen cooling function comprises a base, an alcohol box is fixedly connected to the upper surface of the base, a circulating pump is arranged on the upper surface of the alcohol box, the output end of the circulating pump is fixedly connected with a conveying pipe, and a stainless steel plate heat preservation box is fixedly connected to the upper surface of the base. A box door is arranged on the front surface of the stainless steel plate heat preservation box, and a liquid nitrogen tank is fixedly connected to the upper surface of the stainless steel plate heat preservation box. Through arrangement of a liquid nitrogen tank, a cold conveying pipe, a stop valve, a liquid nitrogen box, a connecting plate and an air hole, the freezing rate of alcohol in a conveying pipe can be greatly increased, so that the using effect of the equipment is improved, and through arrangement of a connecting shaft, fan blades, a synchronous wheel, a belt, a driving motor and a rotating shaft, cold air emitted by liquid nitrogen in the liquid nitrogen box can be diffused; therefore, it is ensured that objects in the stainless steel plate heat preservation box can be evenly and rapidly cooled, and then the cooling effect is improved.

This disclosure relates to the field of cryopreservation technology for biological samples, and in particular to a cryopreservation tube assembly, comprising a cap, a tube body, and a carrier. The cap is detachably connected to the tube body, and the carrier is connected to the cap. The carrier has a bearing surface for holding a target sample, and the bearing surface is provided with a through hole for positioning the target sample. The bearing surface can extend into the tube body to place the target sample inside the tube. In use, the target sample is placed at the position of the through hole, allowing the target sample to fully contact the freezing medium, thus improving the freezing rate. Furthermore, it also improves the thawing rate during thawing, making the target sample easier to detach, which is beneficial for maintaining the sample's recovery rate and viability.