Microdosing Device for Dosing of Smallest Quantities of a Medium

Abstract

A microdosing device for dosing smallest quantities of a medium, having an inlet device, an outlet device, a pump device and a media duct that leads from the inlet device to the outlet device, the inlet device having an inlet opening and an inlet valve having an inlet valve piston, and the outlet device having an outlet opening and an outlet valve having an outlet valve piston, and the pump device having a pump piston. The inlet valve piston, the outlet valve piston and the pump piston are situated on a common diaphragm layer. The microdosing device has the advantage that it is able to be produced in a simple and cost-effective manner.

1 - 10 . (canceled) 
   
   
       11 . A microdosing device for dosing smallest quantities of a medium, comprising:
 an inlet device having an inlet opening, and having an inlet valve having an inlet valve piston;   an outlet device having an outlet opening, and having an outlet valve having an outlet valve piston;   a pump device having a pump piston; and   a media duct that leads from the inlet device to the outlet device;   wherein the inlet valve piston, the outlet valve piston and the pump piston are on a common diaphragm layer.   
   
   
       12 . The microdosing device of  claim 11 , wherein the diaphragm layer is a silicon functional layer. 
   
   
       13 . The microdosing device of  claim 11 , wherein at least one of (i) an upper cover layer is provided above the diaphragm layer, and (ii) a lower cover layer is provided below the diaphragm layer. 
   
   
       14 . The microdosing device of  claim 13 , wherein the media duct is between the lower cover layer and the diaphragm layer. 
   
   
       15 . The microdosing device of  claim 13 , wherein the inlet opening and the outlet opening are in the upper cover layer, and the inlet valve piston and the outlet valve piston are between the upper cover layer and the diaphragm layer, so that the inlet opening and the outlet opening are sealable using a movement of the diaphragm layer. 
   
   
       16 . The microdosing device of  claim 13 , wherein the diaphragm layer has respectively at least one feed-through opening in a vicinity of the inlet valve and in a vicinity of the outlet valve, for the medium to pass through from a region between the upper cover layer and the diaphragm layer into the media duct. 
   
   
       17 . The microdosing device of  claim 13 , wherein the inlet valve piston, the outlet valve piston and the pump piston on the common diaphragm layer, together with the upper cover layer, are a removable unit in a housing, which provides the lower cover layer. 
   
   
       18 . The microdosing device of  claim 17 , wherein the housing has at least one of a removable media reservoir, a pump actuator, and a removable energy supply and at least one of an electronic circuit having a programmable interface for programming at least one presetting, a sensor connection for connecting to a sensor, according to whose measured value the dosing is controllable. 
   
   
       19 . The microdosing device of  claim 18 , wherein the media reservoir and the pump unit are a removable overall unit. 
   
   
       20 . The microdosing device of  claim 11 , wherein at least one of the inlet valve and the outlet valve each have a sealing layer to improve the sealing. 
   
   
       21 . The microdosing device of  claim 11 , wherein at least one of (i) an upper cover layer is provided above the diaphragm layer, and (ii) a lower cover layer is provided below the diaphragm layer, and wherein the upper cover layer and the lower cover layer are produced from a polymer substrate. 
   
   
       22 . The microdosing device of  claim 13 , wherein the inlet valve piston, the outlet valve piston and the pump piston on the common diaphragm layer, together with the upper cover layer, are a removable unit in a housing, produced using an injection molding process, which provides the lower cover layer. 
   
   
       23 . The microdosing device of  claim 11 , wherein at least one of the inlet valve and the outlet valve each have a sealing layer to improve the sealing, the sealing layer having a soft and flexible material, which is a parylene or a silicone.