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CN-224219937-U - Extraction brewing structure and coffee machine

CN224219937UCN 224219937 UCN224219937 UCN 224219937UCN-224219937-U

Abstract

The utility model relates to the technical field of coffee machines, in particular to an extraction brewing structure which comprises a shell, a funnel device, a brewing head device and a water inlet, wherein a driving device is fixed on the shell, the funnel device is detachably arranged on the shell and used for loading coffee powder, the brewing head device comprises a transmission assembly and a brewing head, the transmission assembly is movably arranged in the shell, the brewing head is fixed on the transmission assembly, the driving device is used for driving the transmission assembly to drive the brewing head to move relative to the funnel device so as to compress and flatten the coffee powder in the funnel device, and the brewing head is provided with the water inlet which is connected with a hot water pipeline. When extracting coffee liquid, the driving device drives the transmission component to drive the brewing head to move relative to the funnel device, so that the coffee powder in the funnel device is pressed and flattened, the brewing head keeps zero distance with the coffee powder in the funnel device, the extraction pressure is kept stable, and then hot water is supplied to the coffee powder through the hot water pipeline to brew the coffee powder into the coffee liquid.

Inventors

  • GUO JIANGANG
  • OuYang Xianguang
  • HUANG YUNZHI

Assignees

  • 广东新宝电器股份有限公司

Dates

Publication Date
20260512
Application Date
20250515

Claims (10)

  1. 1. An extraction brewing structure, comprising: a housing (1), wherein a driving device is fixed on the housing (1); The funnel device is detachably arranged on the shell (1) and is used for loading coffee powder; The brewing head device comprises a transmission assembly (5) and a brewing head (6), the transmission assembly (5) is movably arranged in the shell (1), the brewing head (6) is fixed on the transmission assembly (5), and the driving device is used for driving the transmission assembly (5) to drive the brewing head (6) to move relative to the funnel device so as to compress and flatten coffee powder in the funnel device; The brewing head (6) is provided with a water inlet (61), and the water inlet (61) is connected with a hot water pipeline.
  2. 2. The extraction brewing structure of claim 1, wherein the transmission assembly (5) comprises a first transmission part (52) and a second transmission part (53), the first transmission part (52) is rotatably arranged in the shell (1), a transmission gear (51) is fixed at the upper end of the first transmission part (52), the driving device comprises a motor (11), a driving gear is fixed at the output end of the motor (11), the driving gear is meshed with the transmission gear (51), the brewing head (6) is fixed at the lower end of a second transmission part (53), the second transmission part (53) is slidably arranged in the shell (1), the second transmission part (53) is in threaded connection with the first transmission part (52), and a guiding limiting assembly is arranged between the second transmission part (53) and the shell (1).
  3. 3. The extraction brewing structure according to claim 2, wherein the inner wall of the second transmission member (53) is provided with an inner thread (531), the outer wall of the first transmission member (52) is provided with an outer thread (521), and the outer thread (521) is in threaded connection with the inner thread (531).
  4. 4. The extraction brewing structure according to claim 2, wherein the guiding and limiting assembly comprises a guiding and limiting groove (532) vertically arranged on the outer wall of the second transmission piece (53) and a guiding and limiting block (12) arranged on the inner wall of the shell (1), and the guiding and limiting block (12) is in sliding connection with the guiding and limiting groove (532).
  5. 5. The extraction brewing structure according to claim 2, wherein the first transmission member (52) is internally provided with a first through hole (522) penetrating through the upper end and the lower end of the first transmission member (52), the hot water pipeline penetrates through the first through hole (522) and then is connected with the water inlet (61) of the brewing head (6), and the hot water pipeline is provided with an OPV relief valve capable of automatically relieving pressure when the pressure is more than 9 bar.
  6. 6. The extraction brewing structure according to claim 2, wherein a mounting groove (62) is formed on the outer edge of the brewing head (6), a sealing ring (7) is fixedly arranged in the mounting groove (62), and when the brewing head (6) is displaced relative to the funnel device, the sealing ring (7) is tightly attached to the inner wall of the funnel device to form a seal.
  7. 7. The extraction brewing structure according to claim 2, wherein the housing (1) is fixedly provided with a mounting bracket (3), the funnel device comprises a funnel (4) and a filter screen (8), the filter screen (8) is detachably arranged in the funnel (4), the funnel (4) is detachably arranged on the mounting bracket (3), and the mounting bracket (3) is internally provided with a second through hole (31) penetrating through the upper end and the lower end of the mounting bracket (3).
  8. 8. The extraction brewing structure of claim 7, wherein the side wall of the mounting bracket (3) is provided with a powder inlet (32), the powder inlet (32) is connected with a powder pipe (2), two ends of the powder pipe (2) are provided with a powder channel inlet (21) and a powder channel outlet (22), a downward inclined powder channel is formed between the powder channel inlet (21) and the powder channel outlet (22), the powder channel inlet (21) is connected with a bean grinding device, and the powder channel outlet (22) is connected with the powder inlet (32).
  9. 9. The extraction brewing structure of claim 2, wherein a limiting step (13) which is matched with the gear (51) for limiting is formed on the inner wall of the shell (1), and a wear-resistant gasket is arranged between the gear (51) and the limiting step (13).
  10. 10. A coffee machine, characterized in that the coffee machine is provided with an extraction brewing structure according to any one of claims 1-9.

Description

Extraction brewing structure and coffee machine Technical Field The utility model relates to the technical field of coffee machines, in particular to an extraction brewing structure and a coffee machine. Background At present, a semi-automatic pressure coffee machine needs to weigh specified amount of coffee powder after receiving the powder by a funnel component, then manually flattens the coffee powder, and then puts the coffee powder into a brewing head bracket of the coffee machine. The coffee powder is less and the gap between the infusion head brackets is enlarged, so that water accumulation at the top of the coffee powder is easy to cause, and the infusion failure is caused by insufficient extraction pressure. The user switches between single cup and double cup, needs to replace the high-pressure funnel filter screen, and is complex in operation and high in use cost. The utility model patent with the publication number of CN118924127A discloses a brewing head with pressure compensation, when the prior art works, a driving shaft is driven to rotate by a servo motor, the driving shaft drives a primary driving gear to rotate, the primary driving gear drives a gear to rotate, the gear drives a secondary transmission gear to rotate, and the secondary transmission gear drives an extraction head to move up and down, so that the extraction head can compress coffee powder in a funnel, the whole structure is complex, the assembly is difficult, the manufacturing cost is high, and the market demand is not met. Accordingly, there is room for improvement and development in the art. Disclosure of utility model The utility model provides an extraction brewing structure and a coffee machine, which aim to solve the problems that the structure of the prior art is complex, the assembly is difficult, the manufacturing cost is high and the market demand is not met. In order to achieve the above purpose, the technical scheme of the utility model is as follows: The extraction brewing structure comprises a shell, a driving device, a funnel device and a brewing head device, wherein the driving device is fixed on the shell, the funnel device is detachably arranged on the shell and used for loading coffee powder, the brewing head device comprises a transmission assembly and a brewing head, the transmission assembly is movably arranged in the shell, the brewing head is fixed on the transmission assembly, the driving device is used for driving the transmission assembly to drive the brewing head to move relative to the funnel device so as to compress and flatten the coffee powder in the funnel device, a water inlet is formed in the brewing head, and the water inlet is connected with a hot water pipeline. When the coffee liquid is extracted, the driving device drives the transmission assembly to drive the brewing head to move relative to the funnel device, so that the coffee powder in the funnel device is pressed and flattened, the brewing head keeps zero distance with the coffee powder in the funnel device, the extraction pressure is kept stable, and then hot water is supplied to brew the coffee powder into the coffee liquid through the hot water pipeline. According to the scheme, the transmission assembly comprises the first transmission part and the second transmission part, the first transmission part is rotatably arranged in the shell, the transmission gear is fixed at the upper end of the first transmission part, the driving device comprises a motor, the driving gear is fixed at the output end of the motor and is in meshed connection with the transmission gear, the brewing head is fixed at the lower end of the second transmission part, the second transmission part is slidably arranged in the shell, the second transmission part is in threaded connection with the first transmission part, and the guiding limiting assembly is arranged between the second transmission part and the shell. The motor is arranged in such a way, when in work, the driving gear drives the transmission gear to rotate, the transmission gear drives the first transmission piece to rotate, and the first transmission piece and the second transmission piece are in threaded movement, so that the second transmission piece drives the brewing head to move relative to the funnel device. According to the scheme, the inner wall of the second transmission piece is provided with the internal thread, the outer wall of the first transmission piece is provided with the external thread, and the external thread is in threaded connection with the internal thread. The arrangement is such that the second transmission member is screwed onto the outer wall of the first transmission member. According to the above scheme, the direction spacing subassembly is including vertical locating the direction spacing groove on the second driving medium outer wall and locating the direction stopper on the shells inner wall, direction stopper and direction spacing groove sliding connection. The