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CN-224206642-U - Durable coffee extraction cylinder structure and coffee machine

CN224206642UCN 224206642 UCN224206642 UCN 224206642UCN-224206642-U

Abstract

The utility model relates to the technical field of coffee extraction, and provides a durable coffee extraction cylinder structure and a coffee machine, wherein the durable coffee extraction cylinder structure comprises a shell, and an extraction cavity is arranged in the shell; the metal sleeve is arranged in the extraction cavity, the piston is arranged in the metal sleeve in a sliding mode, and the axial length of the metal sleeve covers the full-stroke sliding area of the piston. Through above-mentioned technical scheme, add metal sleeve in the casing, with piston and metal sleeve inner wall cooperation, avoided the piston sealing washer direct with cook first cavity inner wall friction, effectively reduced the wearing and tearing of cavity inner wall, improved the durability of whole extraction structure. The technical problem that the inner wall of the extraction cavity of the coffee machine is easy to wear in the prior art is solved, in addition, the excellent heat conductivity of metal is utilized, the attaching electric heating is added to the cylinder wall, the heat preservation performance in the coffee extraction process is improved, the coffee liquid outlet temperature is improved, and the best tasting taste is obtained for customers (consumers).

Inventors

  • CHEN XIAOKANG
  • LIU KAI
  • SUN JIANGYOU

Assignees

  • 河北朗立臣电子科技有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (10)

  1. 1. A durable coffee extraction cartridge structure comprising: The extraction device comprises a shell (1), wherein an extraction cavity (2) is arranged in the shell (1); A metal sleeve (3) arranged in the extraction cavity (2); the piston (4) is arranged in the metal sleeve (3) in a sliding manner; wherein the axial length of the metal sleeve (3) covers the full stroke sliding area of the piston (4).
  2. 2. A durable coffee extraction cartridge structure according to claim 1, characterized in that the housing (1) is further provided with a preheating device (6), which preheating device (6) is in abutment with the outer circumferential wall of the metal sleeve (3) for temperature elevation of the metal sleeve (3).
  3. 3. A durable coffee extraction cartridge structure according to claim 2, characterized in that the outer circumferential wall of the metal sleeve (3) is sleeved with a heat conducting layer (7), the heat conducting layer (7) is tightly attached to the heating surface of the preheating device (6), so that uniform preheating of the metal sleeve (3) is realized through the heat conducting layer (7).
  4. 4. A durable coffee extraction cartridge structure according to claim 3, characterized in that the heat conducting layer (7) is a sleeve member with an opening (71) and has an inner diameter smaller than the outer diameter of the metal sleeve (3), and the heat conducting layer (7) is sleeved on the outer periphery of the metal sleeve (3) through elastic deformation and is attached.
  5. 5. A durable coffee cartridge structure according to claim 4, characterized in that the area of the opening (71) is staggered with respect to the heating surface of the pre-heating means (6).
  6. 6. A durable coffee extraction cartridge structure according to claim 2, characterized in that the pre-heating means (6) are connected to an external power source by means of a magnetically attractive electrical connection assembly (8).
  7. 7. A durable coffee cartridge structure according to claim 3, characterized in that the metal sleeve (3) is a wear-resistant metal member and the heat conducting layer (7) is an aluminium alloy or a copper alloy member.
  8. 8. A durable coffee cartridge structure according to claim 3, characterized in that the wall thickness of the heat conducting layer (7) is 0.5-3mm.
  9. 9. A durable coffee extraction cartridge structure according to claim 3, characterized in that the pre-heating means (6) comprise: The temperature sensor is embedded in the shell (1) and is abutted against the heat conducting layer (7) and used for detecting the temperature of the metal sleeve (3); The temperature control module is electrically connected with the temperature sensor and is abutted to the heat conduction layer (7), and the temperature control module is used for controlling the temperature of the heat conduction layer (7).
  10. 10. A coffee machine comprising a durable coffee extraction cartridge structure according to any one of claims 1-9.

Description

Durable coffee extraction cylinder structure and coffee machine Technical Field The embodiment of the utility model relates to the technical field of coffee extraction, in particular to a durable coffee extraction cylinder structure and a coffee machine. Background In the existing technical field of coffee machines, a coffee extraction system generally relies on reciprocating sliding of a piston in an extraction chamber to compact and extract coffee powder. The structure applies pressure to the coffee powder bed through the linear motion of the piston, and simultaneously, a sealing ring at the periphery of the piston and the inner wall of the extraction cavity form a sealing space so as to ensure the pressure stability in the extraction process. However, in such conventional extraction structures, the piston needs to slide reciprocally during each extraction, so that continuous friction loss is generated between the sealing ring and the inner wall of the extraction chamber. After long-term use, abrasion marks such as scratches and grooves are easy to appear on the inner wall of the extraction cavity, so that the surface accuracy of the inner wall is reduced, the sealing gap is increased, and further the problems of extraction pressure leakage, unstable flow rate of coffee liquid and the like are caused. Disclosure of utility model In order to overcome the defects, the embodiment of the utility model provides a durable coffee extraction cylinder structure and a coffee machine, which solve the technical problems that the inner wall of an extraction cavity of the coffee machine is easy to wear and the service life of the coffee machine is low in the prior art. According to one aspect, at least one embodiment of the present utility model provides a durable coffee extraction cartridge structure comprising: the shell is internally provided with an extraction cavity; the metal sleeve is arranged in the extraction cavity; the piston is arranged in the metal sleeve in a sliding manner; Wherein the axial length of the metal sleeve covers the full stroke sliding area of the piston. For example, in a durable coffee extraction cartridge structure provided in at least one embodiment of the present utility model, a preheating device is further disposed in the housing, and the preheating device is abutted to an outer peripheral wall of the metal sleeve, so as to raise the temperature of the metal sleeve. For example, in the durable coffee extraction cartridge structure provided in at least one embodiment of the present utility model, a heat conducting layer is sleeved on the outer peripheral wall of the metal sleeve, and the heat conducting layer is closely attached to the heating surface of the preheating device, so that uniform preheating of the metal sleeve is achieved through the heat conducting layer. For example, in one embodiment of the utility model, the heat conducting layer is a sleeve member with an opening, the inner diameter of the sleeve member is smaller than the outer diameter of the metal sleeve, and the heat conducting layer is sleeved on the outer periphery of the metal sleeve through elastic deformation and is attached to the outer periphery of the metal sleeve. For example, in a durable coffee extraction cartridge structure according to at least one embodiment of the present utility model, the opening area is staggered with respect to the heating surface of the preheating device. For example, in a durable coffee extraction cartridge structure provided in at least one embodiment of the present utility model, the preheating device is connected to an external power source by a magnetic-attraction type electrical connection assembly. For example, in a durable coffee extraction cartridge structure according to at least one embodiment of the present utility model, the metal sleeve is a wear-resistant metal member, and the heat conducting layer is an aluminum alloy or copper alloy member. For example, in a durable coffee extraction cartridge structure according to at least one embodiment of the present utility model, the wall thickness of the heat conducting layer is 0.5-3mm. For example, in a durable coffee extraction cartridge structure provided in at least one embodiment of the present utility model, the preheating device includes: The temperature sensor is embedded in the shell and is abutted with the heat conduction layer, and is used for detecting the temperature of the metal sleeve; The temperature control module is electrically connected with the temperature sensor and is abutted to the heat conduction layer, and the temperature control module is used for controlling the temperature of the heat conduction layer. According to another aspect, at least one embodiment of the present utility model also provides a coffee machine including a durable coffee extraction cartridge structure. The embodiment of the utility model has the beneficial effects that: According to the utility model, the metal sleeve is a