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Process for detecting scale formation in a beverage preparation machine

A scale and water pump technology, applied in beverage preparation devices, pump control, analysis materials, etc.

Inactive Publication Date: 2011-01-19
NESTEC SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of detecting scale deposits in the liquid supply device of the hot water generator as soon as possible

Method used

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  • Process for detecting scale formation in a beverage preparation machine
  • Process for detecting scale formation in a beverage preparation machine
  • Process for detecting scale formation in a beverage preparation machine

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Embodiment Construction

[0026] Attached Figure 1A The liquid supply device 10 of the apparatus for producing pressurized hot water according to the present invention is shown. The liquid supply device 10 includes a water tank 1 and a water outlet 11 for distributing pressurized hot water. The pump 3 is installed between the water tank 1 and the water outlet 11 to pump water from the water tank 1 to the outlet 11. The pump 3 is controlled by the controller 5, which will be described in detail later.

[0027] The passage between the water tank 1 and the water outlet 11 also includes a flow meter 2 and a heating device 4, which may be a webbed wheel flow meter. In addition, the liquid supply device 10 may have any suitable structure, because the specific form of the fluid supply device is not the key to the present invention. For example, the channel between the water tank 1 and the water outlet 11 may also include a temperature sensor. If the device is a beverage preparation machine, it includes a suppo...

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Abstract

The invention concerns a process for detecting scale deposit in the liquid supply means (10) of a water pump driven machine comprising at least a water tank (1), a pump (3) and a heating means (4), where water is pumped from the water tank and fed to the heating means, and where the pump is energized by a controller (5) by providing the pump with an energizing signal (8) to provide an intended water flow rate F, wherein the actual water flow rate f (7) is measured and the discrepancy Delta between the actual water flow rate f and the intended water flow rate F is directly and / or indirectly compared to an operating instruction related to scale deposit.

Description

Technical field [0001] The invention relates to a method for detecting scale deposits in a liquid supply device of a hot water generator, particularly a beverage preparation machine, and equipment for performing the method. Background technique [0002] There is a well-known problem in any beverage preparation machine. For example, a boiler that heats water in order to prepare a beverage on the basis of hot water, the boiler and other parts of the water heating tend to form scale deposits after prolonged use. Scale comes from scale formation ions in the water supply, and the content of scale is particularly high in so-called hard water. Descaling (note that "descaling" is commonly used with "decalcification" in the following sections) is to periodically pass a decalcifying agent (such as vinegar) into the scale precipitation pipeline. The decalcifying agent can dissolve any precipitation when it is introduced into the equipment Scale. It is very important to measure the formati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J31/44G01N11/00
CPCF04B49/065F04B17/04F04B17/044Y10T137/0318
Inventor M·奥赞
Owner NESTEC SA