An espresso coffee machine including a main boiler, a dispensing group, a secondary boiler, a main water inlet circuit, hydraulically connected to the main boiler and to each secondary boiler and an electronic control unit, where the main water inlet circuit has a booster pump, the machine further includes a pressure sensor, a bypass circuit hydraulically, and a two-way proportional valve configured to recirculate a part of delivery flow of the booster pump on the main water inlet circuit and upstream of the booster pump, in order to maintain a certain coffee extraction pressure value in each dispensing group set in real time by the pressure sensor.

An apparatus for preparing a beverage from a capsule containing particulate beverage precursor material includes a capsule reception location, a beverage infusion chamber, a puncturing device, a channel, an infusion liquid supply, an infusion liquid flow path, and a device. The capsule reception location is configured to receive the capsule. The beverage infusion chamber has a chamber inlet and a chamber outlet. The puncturing device is configured to puncture the capsule to create a capsule inlet and a capsule outlet. The channel connects the capsule reception location to the beverage infusion chamber. The infusion liquid flow path connects the infusion liquid supply to the chamber inlet of the beverage infusion chamber. The device directs a flowing gas stream into the capsule through the capsule inlet and out of the capsule outlet.

A dispensing group for an espresso coffee machine is described. The group comprises: a coffee boiler configured to contain pressurized hot water; a supply duct for feeding hot water under pressure towards a puck of coffee powder; and a filter-holder support comprising guides (30) which form at least one sliding surface for slidably supporting a filter holder, wherein said filter-holder support is rotatable between a first position for inserting the filter holder and a second dispensing position and wherein said dispensing group comprises a mechanical locking device for locking the filter-holder support in the second dispensing position.

A dispensing group for an espresso coffee machine is described. The group comprises: a coffee boiler configured to contain pressurized hot water; a supply duct for feeding hot water under pressure towards a puck of coffee powder; and a filter-holder support comprising guides (30) which form at least one sliding surface for slidably supporting a filter holder, wherein said filter-holder support is rotatable between a first position for inserting the filter holder and a second dispensing position and wherein said dispensing group comprises a mechanical locking device for locking the filter-holder support in the second dispensing position.

A coffee machine having a water tank; at least one first pump; at least one first boiler for heating the water; a coffee brewing unit; and circuits to feed hot water and/or steam, with a first outlet for hot water or steam towards an emulsifying device which can be connected to a connection joint of the coffee machine; a second outlet for hot water and/or wash water.

A coffee machine having a water tank; at least one first pump; at least one first boiler for heating the water; a coffee brewing unit; and circuits to feed hot water and/or steam, with a first outlet for hot water or steam towards an emulsifying device which can be connected to a connection joint of the coffee machine; a second outlet for hot water and/or wash water.

In an illustrative embodiment, a flow-through fluid heating unit includes an annular member, and a heating element deposited on an inner surface of the annular member, the heating element including three sub-heating elements, each sub-heating element being connected to a separate conduit for receiving a separate phase of a three phase electrical power source. The heating unit may include a baffle core including at least one channel providing a fluid flow path, the baffle core being disposed within the annular member and proximate to the heating element. First and second end fittings may be disposed at each end of the annular member, each end fitting including a fluid port for allowing the fluid to flow through the annular member. One of the end fittings may be releasably connected to the annular member to provide access for removal of the baffle core.

A system for detecting limescale buildup in an aircraft brewing may include at least one of a monitored subsystem or a monitored component, at least one sensor device, and at least one controller. The at least one sensor device may be configured to generate and transmit data for an amount of limescale buildup in the at least one of the monitored subsystem or the monitored component. The at least one controller may be configured to receive the transmitted data, generate a trend based on the received data and at least one of historical data or a baseline, compare the trend to at least one threshold value, and generate a timeline for limescale buildup maintenance based on the comparison of the trend to the at least one threshold value. The data may be pressure differential data or heating temperature differential data.

Disclosed is brewing extraction equipment, including a cylinder, a piston, a pressure rod, a connecting rod, a kettle body, a first one-way valve, a second one-way valve, a water separator and a powder bowl. The pressure rod comprises a pressure rod head and a pressure rod handle, the kettle body comprises a water tank, a first pipe and a second pipe. The connecting rod is connected to the pressure rod head, the pressure rod head is connected to one end of the piston, the piston is arranged inside the air cylinder, the water tank is connected to the bottom of the cylinder via the first pipe, the first one-way valve is located inside the first pipe, the air cylinder is further connected to the water separator via the second pipe located at the bottom thereof, and the second one-way valve is located inside the second pipe. The brewing extraction equipment enables a user to obtain huge liquid pressure and liquid pressure intensity by easily applying a force, so as to extract high-quality espresso coffee. And the equipment is small, lightweight and detachable, and is easy to carry.

Disclosed is brewing extraction equipment, including a cylinder, a piston, a pressure rod, a connecting rod, a kettle body, a first one-way valve, a second one-way valve, a water separator and a powder bowl. The pressure rod comprises a pressure rod head and a pressure rod handle, the kettle body comprises a water tank, a first pipe and a second pipe. The connecting rod is connected to the pressure rod head, the pressure rod head is connected to one end of the piston, the piston is arranged inside the air cylinder, the water tank is connected to the bottom of the cylinder via the first pipe, the first one-way valve is located inside the first pipe, the air cylinder is further connected to the water separator via the second pipe located at the bottom thereof, and the second one-way valve is located inside the second pipe. The brewing extraction equipment enables a user to obtain huge liquid pressure and liquid pressure intensity by easily applying a force, so as to extract high-quality espresso coffee. And the equipment is small, lightweight and detachable, and is easy to carry.