| 摘要 |
A fluid dispenser having a fluid reservoir, a fluid suction chamber of variable volume that defines an extraction and application space; a dip tube that connects the reservoir to the chamber at an injection orifice that defines an injection axis; and a suction mechanism for sucking, during a suction stage, fluid from the reservoir into the chamber through the injection orifice. The injection orifice is situated a little way inside or outside the extraction and application space, such that the fluid is injected in the form of an axial jet into the extraction and application space and fills it, at least in part, without the injection orifice penetrating into the space. |
| 主权项 |
1. A fluid dispenser comprising:
a fluid reservoir containing fluid; a fluid suction chamber of variable volume that includes an extraction and application space, the space defining an open end and a closed end, the space communicating with the remainder of the chamber via the open end, the chamber forming an injection orifice communicating with the reservoir through a dip tube, the injection orifice defining an injection axis, and wherein a bottom of the fluid suction chamber is formed by a shell, and a shoulder is formed at a bottom surface of the shell where the shell meets the injection orifice; suction means for sucking, during a suction stage, fluid from the reservoir into the chamber through the injection orifice; wherein the extraction and application space has a constant volume, the injection orifice being situated at the open end of the extraction and application space, such that the fluid is injected in the form of an axial jet into the extraction and application space and fills the extraction and application space without the injection orifice penetrating into the space, wherein the suction is created exclusively by displacing a piston and a blind tube together relative to the shell, and the piston is not movable into any portion of the extraction and application space, and wherein the blind tube and the extraction and application space are movable together relative to the shell. |
