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US 11,759,797 B2Granted
Liquid dispenser, especially droplet dispenser
AssigneeAptar Radolfzell GmbH
InventorJürgen Greiner-Perth
Life of this patent
Estimating the term…
Abstract
A liquid dispenser having a liquid reservoir and a discharge head secured thereto, an outlet valve with a pressure chamber and an opposite valve chamber. The liquid reservoir and the valve chamber are each connected at least in phases to a surrounding atmosphere by a ventilation channel. The two channels provided for this purpose, the reservoir ventilation channel and the valve ventilation channel, are separate channels with separate inlets on an outer face of the discharge head.
Claims12
A liquid dispenser comprising:
- a liquid reservoir;
- a discharge head which is secured to the liquid reservoir and has a discharge opening connected to the liquid reservoir via a discharge channel;
- the discharge head having, in the discharge channel, an outlet valve which has a valve body adjoining a pressure chamber and which is at least partially displaceable by liquid pressure in the pressure chamber for the purpose of opening the discharge opening;
- the outlet valve having a valve chamber which, based on the valve body, is disposed opposite the pressure chamber;
- a reservoir ventilation channel for pressure equalization in the liquid reservoir;
- and
- a valve ventilation channel for pressure equalization between the valve chamber and an external environment;
- the reservoir ventilation channel and the valve ventilation channel having separate inlets on an outer face of the discharge head;
- the discharge head having an inner component and an outer component, wherein the outer component has been pushed onto the inner component in an assembly direction;
- and
- the reservoir ventilation channel and the valve ventilation channel each extending through the inner component and the outer component.
8 more elements
A liquid dispenser comprising:
- a liquid reservoir;
- a discharge head which is secured to the liquid reservoir and has a discharge opening connected to the liquid reservoir via a discharge channel;
- the discharge head having, in the discharge channel, an outlet valve which has a valve body adjoining a pressure chamber and which is at least partially displaceable by liquid pressure in the pressure chamber for the purpose of opening the discharge opening;
- the outlet valve having a valve chamber which, based on the valve body, is disposed opposite the pressure chamber;
- a reservoir ventilation channel for pressure equalization in the liquid reservoir;
- and
- a valve ventilation channel for pressure equalization between the valve chamber and an external environment;
- the reservoir ventilation channel and the valve ventilation channel having separate inlets on an outer face of the discharge head;
- the liquid dispenser being designed as a droplet dispenser and has means for droplet formation in the region of the discharge opening;
- the valve body has a closure pin and a pressurization collar surrounding the closure pin;
- wherein the discharge opening is provided in an outer component, and, in the closed state, the closure pin adjoins an inner wall of the outer component surrounding the discharge opening for closing the discharge opening.
8 more elements
Dependencies are inferred from the claim text.