8results about How to "Fast freezing" patented technology

The utility model relates to a liquid nitrogen quick-freezing device which comprises a cabinet body, a storage assembly, a jacking assembly, a liquid nitrogen assembly and an exhaust assembly. The cabinet body is provided with a containing groove which is used for containing the storage assembly. The storage assembly comprises a storage rack and a tray; the storage rack is vertically provided with a storage plate, the tray is arranged on the storage plate, and a plurality of first air holes are formed in the tray; the jacking assembly is fixedly connected with the cabinet body, and the jacking assembly is used for penetrating through the first air hole to jack food; the liquid nitrogen assembly is externally connected with liquid nitrogen supply equipment and used for spraying liquid nitrogen into the containing groove. The exhaust assembly is used for exhausting gas in the containing groove. According to the food tray, the liquid nitrogen assembly sprays liquid nitrogen into the containing groove, and the liquid nitrogen is gasified to absorb heat so as to quickly freeze food on the tray; the jacking assembly penetrates through the first air holes of the tray and then jacks the food, so that the lower surface of the food is separated from the tray, or the food is jacked and moved, and therefore the freezing speed of the lower surface of the food is increased, and the food freezing uniformity is improved.

The utility model relates to the technical field of reagent freezing, in particular to a quick pre-freezing device for a freeze-drying reagent, which comprises a pre-freezing box, a pre-freezing chamber, a cooling system, a rotating device and a temperature control system, and is characterized in that the pre-freezing chamber is arranged in the pre-freezing box, the cooling system comprises a refrigerant, a cooling circulating pipe and a radiator, and the rotating device is arranged in the pre-freezing box. The cooling circulating pipe is arranged on the side wall of the pre-freezing chamber, the refrigerant circularly flows in the cooling circulating pipe, the radiator is installed on the back wall of the pre-freezing box, the multiple pre-freezing plates can be pre-frozen at the same time due to the fact that the multiple sets of installation bases are arranged, cold air can be promoted to flow in the pre-freezing chamber through rotation of the pre-freezing plates, and the cooling effect is improved. The contact area of cold air and the reagent is increased, so that the freezing speed is increased, the freezing efficiency is improved, the pre-freezing time is shortened, the cold air can be uniformly distributed to each corner of the pre-freezing chamber by rotating the pre-freezing plate, and the temperature distribution in the whole pre-freezing chamber is more uniform.

This invention relates to the field of freeze-drying technology, specifically to an intelligent vacuum freeze dryer and its usage method. The dryer includes a main unit and a pre-freezing vacuum chamber within it, a shelf placed inside the pre-freezing vacuum chamber, the shelf having an internal cavity and a main gas inlet at its bottom for gas to enter the internal cavity; a carrying tray with multiple evenly arranged internal components for storing materials, the tray having multiple planar grids and heating elements for releasing heat, multiple push rods for moving materials within the planar grids, and an adjustment component for adjusting the position of the push rods according to different usage environments; and side rotating columns with multiple evenly rotatable components connected to the sidewalls of the carrying tray, each side rotating column having multiple exhaust ports, and the carrying tray having an efficiency-enhancing component for driving the side rotating columns.

A kind of NK cell freezing equipment, including cell freezing box, freezer, sealing door, the cell freezing box is connected sealing door by hinge, cell freezing box bottom is connected freezer, cell freezing box bottom plate has multiple exhaust holes, exhaust holes are evenly distributed on cell freezing box bottom plate, cell freezing box inside has protective box, protective box inside has auxiliary cavity, two freezing pipes are provided in auxiliary cavity inside, freezing pipe is symmetrically arranged, freezing pipe bottom passes through cell freezing box and is connected with freezer, air outlet pipe outside cell freezing box passes through protective box and is connected with exhaust pipe, freezing speed is fast, freezing effect is good, cell survival rate is high, access is convenient, wide application range, simple operation, it is convenient to adjust, structure is reasonable, effectively avoid that cell storage pipe 14 is inclined and spills, limiting effect is good.

The invention discloses a freezing device for avoiding air blockage at the tail end of a pipe in freezing construction, which comprises a liquid supply pipe and a freezing pipe, the liquid supply pipe is inserted into the freezing pipe from the pipe orifice of the freezing pipe and extends to the pipe bottom of the freezing pipe, and the liquid supply pipe is communicated with the freezing pipe through fluid; the freezing device further comprises a tail end partition plate and a saline water channel pipe, the tail end partition plate is installed on the portion, inserted into the freezing pipe, of the liquid supply pipe, and the outer circumferential face of the tail end partition plate is matched with the inner wall of the freezing pipe in a sealed mode. By means of the specific structural design, it is ensured that low-temperature saline water can fully fill the whole freezing pipe, especially the tail end of the pipe, the gas blocking phenomenon is avoided, and the effective freezing distance and the freezing effect of the freezing pipe are ensured.

The utility model discloses a kind of frozen transport frames for cold storage ice plate, comprising: underframe, it is horizontally arranged, and the four corners position of lower end surface is all provided with universal wheel;Top frame, it is horizontally arranged above the underframe;Side frame, it is vertically arranged between the two sides of the underframe and the top frame;Tray, it is horizontally and layered arranged between a pair of side frame.The utility model has the following advantages and effects: by setting movable transport frame, the layered support of ice plate is realized, sufficient heat exchange space is ensured between ice plate, and it is convenient to push uniformly, the ice plate freezing speed of freezing out is fast, ice plate cannot be deformed, so that batch freezing and cold release operation are facilitated.

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 utility model discloses a tunnel-type liquid nitrogen quick-freezing device for preserving fresh wet noodles, relating to the field of liquid nitrogen quick-freezing technology. It includes a frame, on which a housing and a wire mesh conveyor mechanism are fixedly installed. The housing has an inlet and an outlet at both ends. A quick-freezing unit, a cleaning unit, a detection unit, and a recovery unit are fixedly installed inside the housing. The wire mesh conveyor mechanism passes through the inlet and outlet. The beneficial effect lies in the use of air-knife type nozzles in conjunction with honeycomb guide plates to rectify and evenly spray cold air containing liquid nitrogen. The flow direction of the cold air is changed by the baffles, allowing it to flow evenly around the product and efficiently cover it from both sides, significantly improving the freezing speed. The motor drives movable parts to flexibly adjust the nozzle angle, and the tilt sensor ensures precise angle adjustment, enabling the cold air to comprehensively and evenly cover products of different thicknesses, shapes, and heights, effectively improving freezing efficiency and quality.