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Priming valve device for water circuit of beverage machine

A water injection valve and beverage machine technology, applied in the fields of coffee machines and beverage machines, can solve problems such as the check valve back pressure of several bars, and achieve the effect of avoiding leakage problems, simple and reliable equipment

Inactive Publication Date: 2008-12-24
SOC DES PROD NESTLE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another problem with this prior art is that the check valve creates a back pressure of several bar since it is only able to open under the dynamic pressure generated by the pump

Method used

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  • Priming valve device for water circuit of beverage machine
  • Priming valve device for water circuit of beverage machine
  • Priming valve device for water circuit of beverage machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] exist Figure 1-3 Inside, a priming valve arrangement 1 according to a preferred embodiment is shown. The priming valve comprises a housing assembly 2 comprising two constituent parts joined together to house a valve assembly 3 internally. The priming valve device 1 has a simple structure since only a limited number of components are required to achieve the intended pump priming, waterway pressure control and cleaning / flushing functions.

[0041] Housing assembly 2 is contained in the Figure 7-9 shown in detail within the first component or main housing 4, and in Figure 10-12 The second component or low pressure connector 5 forming the drain and vent part of the device is shown in detail in .

[0042] The main housing 4 has a water inlet 6 comprising a short tube with connection means adapted to connect the water inlet to the piping of the water circuit on the downstream side of an optional pressure pump. The optional pressure pump is usually a piston pump that ca...

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PUM

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Abstract

Priming valve device (1) for beverage machine comprising: a casing assembly (2) including a water inlet (6) a water outlet (7) and a drain and venting portion (5) for discharging water and / or air during priming, a valve assembly (3) associated with the casing assembly which comprises a valve member (9); wherein the same valve member (9) is moveable to a closed position of the water outlet, by elastic return, when the pressure in the inlet decreases under the elastic return pressure of the valve member.

Description

technical field [0001] The present invention relates to a priming valve device capable of ensuring priming of a pump in a waterway. The invention also relates to a beverage machine, such as a coffee machine, comprising such a priming valve arrangement. Background technique [0002] In modern coffee machines, beverages are prepared by passing hot water under pressure through a container or chamber containing the beverage ingredients. Water is pumped from the tank by a pressure pump, such as a piston pump, which pushes the water into a heater for heating, usually a thermobloc, boiler or instant heater, and sprays hot water through the beverage ingredients. The beverage ingredients are extracted or dissolved under pressure and the beverage extract or mixture is released from the container. Pressure pumps can deliver pressures in excess of 5 bar, typically 15 to 20 bar; this pressure depends on the back pressure against which the vessel is opposed, the ingredients (e.g. partic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/04A47J31/46
CPCF16K17/0473Y10T137/2587Y10T137/6606Y10T137/7922Y10T137/2579Y10T137/7869Y10T137/2592Y10T137/2617A47J31/461
Inventor S·埃特尔S·津格
Owner SOC DES PROD NESTLE SA