Pump for liquid beverage preparation devices

a technology for beverage preparation devices and pumps, which is applied in the direction of applications, positive displacement liquid engines, liquid fuel engines, etc., can solve the problems of affecting the quality or operation feel of the beverage preparation device, affecting the other components housed within the device housing, and affecting so as to achieve effective dampening or substantially suppressing the vibration of the pump, and suppressing the transmission of vibrations from the pump chamber to other parts of the device

Inactive Publication Date: 2014-09-04
NESTEC SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The elastic support member effectively dampens and absorbs vibrations, enhancing the absorption of axial, lateral, and rotational movements, thereby reducing the transmission of vibrations to the housing and improving the operational stability and efficiency of the pump.

Problems solved by technology

In general, during operation of the pump of such a device, vibrations occur due to an oscillating or rotational movement of a driven part, e.g. a piston or a number of blades, housed within a pump chamber of the pump.
These vibrations may then be transferred to the housing of the device and thus negatively affect the quality or operational feel of the beverage preparation device.
Moreover, the vibrations may negatively affect other components housed within the housing of the device.

Method used

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  • Pump for liquid beverage preparation devices
  • Pump for liquid beverage preparation devices
  • Pump for liquid beverage preparation devices

Examples

Experimental program
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Effect test

Embodiment Construction

[0058]FIG. 1 shows a sectional side view of a preferred embodiment of a pump 1 according to the present invention. The pump 1 is preferably a vibrating pump known in the field of beverage preparation machines. Thereby, a piston 3 is movably mounted within a pump chamber 2. Preferably, at least one spring (not shown) is provided within the pump chamber 2 in order to exert a force on the piston 3. Moreover, electromagnetic solenoid 15 is provided in the periphery of the pump chamber 2 in order to interact with the piston 3. Hence, an axial reciprocating movement of the piston 3 within the pump chamber 2 is enabled due to activation by means of the solenoid 15. The pump chamber 2 is connected to a liquid inlet 4a and a liquid outlet 4b of the pump 1. The piston 3 comprises at least one bore 3a which can be selectively closed by at least one valve 3b in order to pump liquid from the liquid inlet 4a to the liquid outlet 4b of the pump 1 during the reciprocating movement of the piston 3.

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Abstract

A device for the preparation of a liquid food or beverage, such as tea, coffee or soup from a preferably portioned ingredient, in particular in the form of capsules, housed within a beverage preparation chamber. The device includes a housing, a pump comprising a pump chamber, in particular a pump chamber containing a piston moveably mounted therein, the pump further comprising a liquid inlet and a liquid outlet, a liquid supply which is in fluid connection with the liquid inlet of the pump, a pump support connected to the housing of the device at which the pump is mounted, and a pre-suction chamber connected to the liquid inlet of the pump and being designed to intermittently provide liquid to the liquid inlet of the pump.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a division of U.S. application Ser. No. 12 / 994,024 filed Dec. 22, 2010, which is the U.S. national phase of PCT / EP2009 / 056292 filed May 25, 2009, which claims priority to European application no. 08157066.5 filed May 28, 2008, the entire content of each earlier application being expressly incorporated herein by reference thereto.FIELD OF THE INVENTION[0002]The present invention relates to a pump for a device for the preparation of liquid food or a beverage. More particularly, the present invention relates to an elastic support member for resiliently supporting the pump within the housing of the device.BACKGROUND OF THE INVENTION[0003]Beverage preparation machines have been known for a number of years. For example, U.S. Pat. No. 5,943,472 discloses a water circulation system between a water reservoir and a hot water or vapour distribution chamber of an espresso machine. The circulation system includes a valve, a metalli...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): A47J31/46A47J31/40
CPCA47J31/407A47J31/46F04B17/046F04B53/003F16L27/1021F16L37/144
InventorBUHLER, LEOETTER, STEFANHODEL, THOMASMOSER, RENZOMEIER, MICHAEL
OwnerNESTEC SA