Advantage of Thermoblock in Espresso Machines

Most espresso machines advantageously make use of boilers or thermoblocks for brewing the espresso. In case of home espresso machines usually it is the same boiler that is used to also produce the steam for frothing milk. Thus, this is referred to as a single boiler system. The temperature and pressure in the boiler is made higher upon pressing the steam button. Within a minute or so the required pressure is built up.

In case of some espresso machines, especially in the automatic and semiautomatic machine types, there is provided a separate boiler or thermoblock for the steam generation function. Solid performers among espresso machines like Capresso espresso Classic have stainless steel lined thermoblocks or boilers. This helps in the prevention of water from coming into contact with aluminum at any time while the brewing process is in progress.

The thermoblocks heat the water as it passes through a tube that remains encased in an aluminum block with a built in element. Applying a pulsing action the pump pushes water drops into the thermoblock or boiler where it soon gets transformed to steam. While the water held by the boiler remains at a constant temperature for espresso making, steam is quickly produced by the thermoblock.

The ability of the thermoblocks to continuously make steam renders them suitable for preparing espresso on a large scale for serving bigger groups. That is the reason why even superautomatic machines make use of the thermoblock or boiler. Indeed, the thermoblock technology has provided an impetus to the development of the advanced espresso machines.

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