Beverage Machine Temperature Control for Altitude-Adaptive Brewing

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Solution Overview

Problem

Existing beverage preparation machines struggle to maintain optimal water temperature for brewing, especially at high altitudes, leading to safety issues, altered beverage characteristics, and excessive limescale deposition.

Innovation Solution

A machine with a control and command unit that regulates the heating device based on actual boiling temperature values correlated to ambient pressure, ensuring the water temperature remains below a safety threshold, thus preventing boiling and maintaining desired organoleptic characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If the water is heated to a temperature slightly higher than the optimal range to compensate for heat losses, then the water temperature can maintain the desired level during infusion, but the water may reach boiling point causing alteration of aromatic substances and steam generation

Engineering Contradiction:
Improvewater temperatureVSAvoidsteam generation and aromatic alteration
Core Design Contradiction:
TemperatureVSObject-generated harmful factors

Solution Approach 1:

The patent employs temperature sensors and control units that continuously monitor water temperature and adjust heating power accordingly. The system uses feedback from temperature measurements to prevent overheating, ensuring water reaches but does not exceed the optimal infusion temperature range, thereby preventing steam generation and aromatic substance degradation.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent dynamically adjusts heating parameters based on detected temperature conditions. The control system modifies heating power, duration, and timing parameters to precisely control water temperature evolution, allowing compensation for heat losses without risking boiling point achievement and associated harmful effects.

Inventive Principle:
Principle #35Parameter changes

2Temperature

If the heating device is supercharged to reach a threshold temperature at high altitudes, then the target temperature can be achieved, but excessive steam generation and machine overheating occur creating safety risks

Engineering Contradiction:
Improvewater temperature thresholdVSAvoidsafety risks from excessive steam and overheating
Core Design Contradiction:
TemperatureVSObject-affected harmful factors

Solution Approach 1:

The system uses temperature sensors positioned throughout the heating circuit to provide continuous feedback to the control unit. This feedback mechanism allows the system to detect approaching temperature thresholds and adjust heating power accordingly, preventing dangerous overheating and excessive steam generation even at high altitudes where boiling point is reduced.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent implements dynamic control of heating parameters based on real-time temperature conditions and altitude detection. The system adapts heating power, flow rates, and timing dynamically rather than using fixed parameters, allowing safe operation across varying altitude conditions without risking thermal runaway or excessive steam generation.

Inventive Principle:
Principle #15Dynamics

3Temperature

If the machine waits for water to reach minimum temperature before starting preparation, then optimal infusion temperature can be achieved, but the machine may never start at high altitudes where the required temperature cannot physically be reached

Engineering Contradiction:
Improveminimum temperature for infusionVSAvoidbeverage preparation startup
Core Design Contradiction:
TemperatureVSProductivity

Solution Approach 1:

The patent detects altitude conditions (via barometric pressure sensors or user input) and dynamically adjusts the target temperature parameters accordingly. Since boiling point decreases with altitude, the system lowers the expected maximum temperature and adjusts infusion parameters to achieve optimal brewing within the reduced temperature range, enabling machine operation at high altitudes where standard temperature targets would be unattainable.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system automatically detects environmental conditions and self-adjusts operating parameters without requiring manual intervention. The control unit monitors temperature progression and environmental factors, then autonomously modifies heating and infusion parameters to ensure successful beverage preparation regardless of altitude constraints.

Inventive Principle:
Principle #25Self-service

4Temperature

If water is heated to boiling temperature, then the maximum temperature threshold is reached, but excessive evaporation occurs distorting water measurement and altering beverage characteristics

Engineering Contradiction:
Improvewater temperature thresholdVSAvoidwater measurement accuracy and beverage characteristics
Core Design Contradiction:
TemperatureVSManufacturing precision

Solution Approach 1:

The system uses temperature sensors to provide continuous feedback on water temperature during heating and infusion. This feedback allows the control unit to precisely maintain water temperature within the optimal range, preventing boiling and the associated excessive evaporation that would distort water measurements and alter beverage characteristics.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent applies partial heating action by stopping heating before water reaches boiling point, using just enough thermal energy to achieve optimal infusion temperature. This controlled partial action prevents the excessive heating that causes problematic evaporation and measurement distortion while still achieving effective beverage extraction.

Inventive Principle:
Principle #16Partial or excessive action

5Temperature

If water is heated excessively during beverage preparation, then the water can effectively extract aromas, but the organoleptic characteristics of the infused beverage are altered decreasing quality

Engineering Contradiction:
Improvewater temperature for extractionVSAvoidorganoleptic characteristics quality
Core Design Contradiction:
TemperatureVSManufacturing precision

Solution Approach 1:

The system employs temperature sensors and control units that continuously monitor water temperature during the infusion process. The feedback from these sensors allows real-time adjustment of heating power to maintain water temperature precisely within the optimal extraction range, ensuring consistent organoleptic characteristics and high beverage quality without overheating.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent dynamically adjusts heating parameters based on detected temperature conditions and beverage type requirements. The control system modifies heating power, duration, and timing parameters to precisely control water temperature evolution, optimizing extraction efficiency while preventing temperature-induced degradation of aromatic substances and organoleptic qualities.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The machine ensures high-quality beverages with consistent organoleptic characteristics across varying altitudes and environmental conditions, while minimizing safety risks and limescale deposits.

Implementation Method 1

a water heating device configured to heat the water to a determined temperature value

Methodology Applied
Scientific EffectHeating: Heating

Implementation Method 2

a pump and a heating device are provided to take the water from the tank, heat it to the desired temperature and supply it to the filtering container

Methodology Applied
Scientific EffectPumping: Pump

Implementation Method 3

the infusion of the beverage takes place at ambient pressure

Methodology Applied
Scientific EffectInfusion: Absorption (physical)

Implementation Method 4

a container suitable for positioning a filtering element for the coffee powder, or other aromatic mixture, which is passed through by the hot water

Methodology Applied
Scientific EffectExtraction: Liquid-Liquid Extraction

Data Source

PatentUS12290202B2Machine and method to prepare beverages
Publication Date: 2025.05.06 DE LONGHI APPLIANCES SRL
  • US12290202B2 patent drawing

AI summary

A machine to prepare beverages includes at least one tank for the water fluidically connected to a filtering container suitable to contain an aromatic mixture; a pump to feed the water from said tank; a heating device to heat the water in transit; and a control and command unit connected to a user interface. The invention also concerns a method to prepare beverages.