After investigation and research, we found that many nitrogen coffee and beverage enthusiasts commonly face the problem of frequent replacement of nitrogen cylinders and high consumables costs when using traditional equipment. For this purpose, we have designed a nitrogen coffee machine for users that does not require the replacement of consumable gas cylinders. Relying on our unique technical advantages, this equipment can efficiently purify nitrogen from the air, and accurately inject it into the coffee liquid, giving the drinks a dense, silky taste and rich foam, committed to the concept of sustainable environmental protection.