31results about How to "Low residual oxygen" patented technology

The invention belongs to the field of food equipment, and particularly discloses food intelligent vacuum baking equipment based on control of Internet of Things. The food intelligent vacuum baking equipment comprises a baking device in which a roasting chamber is arranged, a gas supply device suitable for transporting carrier gas to the roasting chamber, a vacuum device suitable for producing vacuum environment in the roasting chamber, a circulating device suitable for enabling the carrier gas in the roasting chamber to circulate, a control device and an operation and control terminal, whereina gate is arranged at an entrance and exit suitable for foods to input and output, in one side of the baking device, in a sealing manner; the operation and control terminal is used for manipulating the control device through the Internet of Things in a long-distance manner and setting a corresponding roasting technology; and the control device is used for manipulating the vacuum device to vacuumize the roasting chamber, roasting foods in the vacuum environment with carrier gas and manipulating the circulating device to drive the carrier gas to cool the foods. The foods are roasted in the vacuum environment, so that the crispness of the foods and the uniformity of the crispness are notably improved; the carrier gas is exhausted in time for baking volatile matter; and the quantity of oil oxidative deterioration substances and oxygen residual quantity in the foods are lower, the preservation of the foods is facilitated, and the quality guarantee period can be prolonged by 0.5-1 time.

The invention belongs to the field of food devices, and particularly discloses a cooling device suitable for improving the soft / crispy uniformity of food. The cooling device comprises a gas supply device, a cooling device, a sensor group, a valve group and a circulating device. The gas supply device conveys protection gas to the cooling device and exhausts air in a cooling chamber. The cooling chamber is internally provided with a cold wind spraying nozzle and an exhaust floating nozzle which are suitable for evenly distributing protection gas and a cold supporting belt for transferring and bearing food. The exhaust floating nozzle, the circulating device and the cold wind spraying nozzle are sequentially communicated, and the circulation of the protection gas in the cooling chamber is driven. A food input port and a food output port of the cooling device are each provided with a gate through sealing so that the food can be isolated from the air. The cooling device is controlled to cool the food in the environment of protection gas, the protection gas flow is uniform in distribution, the soft / crispy uniformity of the food is high, the food is not prone to peeling and cracking, thefood is isolated from the air by the protection gas, the residual amount of grease oxidized deterioration objects and oxygen in the food is quite small, the food is easy to store, and the shelf life is remarkably prolonged.

Disclosed is a method for preparing a ferrotitanium alloy based on aluminothermic self-propagating gradient reduction and slagging refining, the method comprising: (1) carrying out aluminothermic self-propagating gradient reduction by means of a first method, wherein raw materials are divided into several batches, the first batch of materials is put into a reaction furnace and is ignited with a magnesium powder from the top of the materials so as to initiate a self-propagating reaction, and the other batches of materials are successively added until the reaction is complete; or carrying out aluminothermic self-propagating gradient reduction by means of a second method, wherein raw materials other than aluminum powder are mixed until uniform and added into a continuous mixer at a uniform flow rate, the aluminum powder is added into the continuous mixer at a flow rate decreasing at a gradient, and the uniformly mixed raw materials are simultaneously continuously introduced into the reaction furnace for an aluminothermic self-propagating reaction until all the materials are completely reacted; (2) smelting by means of maintaining a temperature to obtain an upper layer of an aluminum oxide-based slag and a lower layer of an alloy melt; (3) spraying a refining slag material into the lower layer of alloy melt for stirred slagging refining; and (4) cooling the refined high-temperature melt to room temperature, and removing the upper layer of slag to obtain the ferrotitanium alloy.