Cartridge receiver, cartridge system, drink preparation machine and method for producing a drink

A cartridge system for producing a beverage in a beverage preparation machine, the cartridge system comprises:

• A) a cartridge comprising:
• i) a reservoir containing a beverage substance, the reservoir having a cartridge opening;
• and
• ii) a sealing element that closes the cartridge opening of the reservoir;
• B) a cartridge receptacle that is fastened around the closed cartridge opening of the cartridge, the cartridge receptacle comprising:
• i) mixing chamber;
• ii) a fluid feed that connects the mixing chamber to a fluid source of the beverage preparation machine;
• and
• iii) a spike guide and a piercing spike mounted in a displaceable manner within the spike guide, the piercing spike is displaceable between a retracted position, in which the piercing spike is spaced away from the sealing element of the cartridge, and an extended position, in which the piercing spike pierces the sealing element of the cartridge and projects into the reservoir, wherein an outer wall of the piercing spike has at least one lateral channel for conveying the beverage substance out of the reservoir of the cartridge and in a direction of the mixing chamber of the cartridge receptacle when the sealing element is pierced, wherein after the sealing element is pierced by the piercing spike, the beverage substance is conveyed out of the reservoir of the cartridge and directed into the mixing chamber of the cartridge receptacle, and the beverage substance is mixed in the mixing chamber with a fluid from the fluid source of the beverage production machine that is supplied into the mixing chamber through the fluid feed to produce the beverage;
• and
• iv) a beverage outlet, through which the beverage produced in the mixing chamber leaves the mixing chamber;
• wherein the cartridge receptacle is fastened around the closed cartridge opening of the cartridge before the cartridge receptacle and the cartridge are inserted into the beverage preparation machine.