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CN-122003199-A - Coffee machine

CN122003199ACN 122003199 ACN122003199 ACN 122003199ACN-122003199-A

Abstract

Disclosed herein is a coffee machine (100) comprising a brewing unit configured to extract coffee from a coffee grind, a water heating system associated with the brewing unit and configured to heat water for the brewing unit, a pump (106) operable to direct water from a water reservoir (102) to the brewing unit, and a motor (136) driving operation of the pump (106), wherein the pump (106) is operable at a pressure in a range of between about 0 and 10 bar or pressure, and wherein the pump (106) is operable at a noise level below about 60 dB.

Inventors

  • CHEN ZHENKANG
  • C. Pussalogues
  • James. Sebastian Hardin
  • REN XIANG
  • Mohammed Lisa Rezai Shahmilzadi

Assignees

  • 布瑞威利私人有限公司

Dates

Publication Date
20260508
Application Date
20241011
Priority Date
20231013

Claims (20)

  1. 1.A coffee maker, comprising: a brewing unit configured to extract coffee from the coffee grounds; A water heating system associated with the brewing unit and configured to heat water for the brewing unit; A pump operable to direct water from a water reservoir to the brewing unit, and A motor driving operation of the pump, wherein the pump is operable at a pressure or pressure range between about 0 and 10 bar, and wherein the pump is operable at a noise level below about 60 decibels.
  2. 2. The coffee machine of claim 1, wherein the pump includes noise reduction means to facilitate operation of the pump at a noise level of less than about 60 decibels.
  3. 3. The coffee machine of claim 2, wherein the pump further comprises a housing, and wherein the noise reducer is integrated into the housing.
  4. 4. A coffee machine according to claim 2 or 3, wherein the noise reducing means comprise a pair of interlocking gears.
  5. 5. The coffee machine of claim 4, wherein the interlocking gears each include a gear axis aligned with a central longitudinal axis of the pump.
  6. 6. Coffee machine according to any one of claims 2 to 5, wherein said pump comprises: A pump head having an inlet for receiving water from the water reservoir and an outlet in fluid communication with the inlet, and A gear pump assembly disposed in fluid communication between the inlet and the outlet, wherein the gear pump assembly includes a noise reducer.
  7. 7. The coffee machine of claim 6, wherein the pump head includes a bypass valve associated with the inlet or the outlet.
  8. 8. Coffee machine according to claim 6 or 7, wherein the coffee machine further comprises a magnetic transmission between the motor and the gear pump assembly.
  9. 9. The coffee machine of claim 8, wherein the gear pump assembly includes a drive shaft, wherein the drive shaft of the gear pump assembly is separate from the drive shaft of the motor.
  10. 10. The coffee machine of any one of claims 1 to 9, further comprising a control system configured to adjust the speed of the motor based on the pressure within the brewing unit.
  11. 11. The coffee machine of any one of claims 1 to 10, wherein the control system is configured to adjust the power consumption of the motor based on the pressure within the brewing unit.
  12. 12. Coffee machine according to any one of claims 1 to 11, wherein said pump is operable at a flow rate ranging between about 0.5 and 8.0 ml/s.
  13. 13. Coffee machine according to any one of claims 1 to 12, wherein said pump is operable with a pressure range between about 3 and 9 bar and a flow rate range between about 1.0 and 4.5 ml/s.
  14. 14. Coffee machine according to any one of claims 1 to 12, wherein said pump is operable with a pressure range between about 0 and 3 bar and a flow rate range between about 4.5 and 8.0 ml/s.
  15. 15. Coffee machine according to any one of claims 1 to 12, wherein said pump is operable at a pressure of about 9 bar and a flow rate of about 1.5 ml/s.
  16. 16. Coffee machine according to any one of claims 1 to 12, wherein said pump is operable at a pressure of about 9 bar and a flow rate of about 2.5 ml/s.
  17. 17. Coffee machine according to any one of claims 1 to 12, wherein said pump is operable at a pressure of about 5 bar and a flow rate of about 4.5 ml/s.
  18. 18. Coffee machine according to any one of claims 1 to 12, wherein said pump is operable at a pressure range between about 0 and 1 bar and a flow rate of about 8.0 ml/s.
  19. 19. A beverage appliance comprising: A fluid reservoir; A pump in fluid communication with the fluid reservoir and adapted to direct fluid from the fluid reservoir to a fluid outlet of the beverage appliance, the pump being operatively associated with one or more sensors adapted to determine an operational state of the pump, and A microcontroller unit configured to receive user input indicative of a beverage appliance function and to control the pump output in response to the user input, wherein the beverage appliance function is defined by a target pressure or pressure range and a target flow rate or flow rate range.
  20. 20. The beverage appliance of claim 19, wherein the one or more sensors include a pump current sensor and a pump speed sensor.

Description

Coffee machine Cross Reference to Related Applications The present application claims priority from australian patent application No.2023903286 filed on 10/13 of 2023. The entire disclosure of australian patent application No.2023903286 is incorporated herein by reference in its entirety. Technical Field The present disclosure relates generally to beverage devices. In particular, the present disclosure relates to beverage devices comprising a pump for dispensing a fluid. The invention has been developed primarily for espresso or coffee machines and will be described hereinafter with reference to these applications. However, it will be appreciated that the invention is not limited to this particular field of application, but may be implemented in other beverage devices involving the delivery of water. Background Beverage devices such as espresso machines typically include a pump in fluid communication between a fluid reservoir and one or more fluid outputs, such as a brew head and a steam wand of the espresso machine. Known espresso machines control the pressure and flow rate of water delivered when making a cup of espresso coffee. Accurate control of pressure and flow rate may be difficult to achieve due to the reliance on electromagnetic pumps driven using AC motors. Furthermore, the duty cycle of the electromagnetic pump is typically 2 minutes in the on state and 1 minute in the off state, which means that it cannot perform continuous operation. It is well known that electromagnetic pumps may generate noise during operation. Disclosure of Invention It is an object of the present invention to substantially overcome or at least ameliorate one or more of the disadvantages of existing equipment, or at least to provide a useful alternative to existing equipment. Disclosed herein is a coffee maker, comprising: a brewing unit configured to extract coffee from the coffee grounds; A water heating system associated with the brewing unit and configured to heat water for the brewing unit; A pump operable to direct water from a water reservoir to the brewing unit, and A motor driving operation of the pump, wherein the pump is operable at a pressure or pressure range between about 0 and 10 bar, and wherein the pump is operable at a noise level below about 60 decibels. In one or more embodiments, the pump includes noise reduction devices to facilitate operation of the pump at noise levels below about 60 decibels. In one or more embodiments, the pump further comprises a housing, and the noise reducer is integrated into the housing. In one or more embodiments, the noise reducer includes a pair of interlocking gears. In one or more embodiments, the noise interlock gears each include a gear axis aligned with a central longitudinal axis of the pump. In one or more embodiments, the pump includes: A pump head having an inlet for receiving water from the water reservoir and an outlet in fluid communication with the inlet, and A gear pump assembly disposed in fluid communication between the inlet and the outlet, wherein the gear pump assembly includes a noise reducer. In one or more embodiments, the pump head includes a bypass valve associated with the inlet or outlet. In one or more embodiments, the coffee maker further comprises a magnetic transmission between the motor and the gear pump assembly. In one or more embodiments, the gear pump assembly includes a drive shaft, wherein the drive shaft of the gear pump assembly is separate from the drive shaft of the motor. In one or more embodiments, the coffee machine further comprises a control system configured to adjust the speed of the motor based on the pressure within the brewing unit. In one or more embodiments, the control system is configured to adjust the power consumption of the motor based on the pressure within the brewing unit. In one or more embodiments, the pump may operate at a flow rate ranging between about 0.5 to 8.0 ml/s. In one or more embodiments, the pump may operate in a pressure range of about 3 to 9 bar and a flow rate range of about 1.0 to 4.5 ml/s. In one or more embodiments, the pump may operate in a pressure range of about 0 to 3 bar and a flow rate range of about 4.5 to 8.0 ml/s. In one or more embodiments, the pump may operate at a pressure of about 9 bar and a flow rate of about 1.5 ml/s. In one or more embodiments, the pump may operate at a pressure of about 9 bar and a flow rate of about 2.5 ml/s. In one or more embodiments, the pump may operate at a pressure of about 5 bar and a flow rate of about 4.5 ml/s. In one or more embodiments, the pump may operate at a pressure ranging from about 0 to 1 bar and a flow rate of about 8.0 ml/s. Also disclosed herein is a beverage appliance comprising: A fluid reservoir; A pump in fluid communication with the fluid reservoir and adapted to direct fluid from the fluid reservoir to a fluid outlet of the beverage appliance, the pump being operatively associated with one or more sensors adapted to determine an op