| 摘要 |
A dispenser for dispensing a fluid product includes a liquid reservoir for storing a liquid product and a pump that is connected to the liquid reservoir. The pump may include a liquid chamber for containing a dose of the liquid product, a liquid outlet valve for regulating passage of liquid product from the liquid chamber to a dispensing head, compression means for applying a compressional force to liquid product in the liquid chamber, thus forcing liquid product from the liquid chamber through the liquid outlet valve and through the dispensing head. The dispenser may also include a liquid inlet device for administering admission of liquid product into the liquid chamber from the liquid reservoir. The liquid inlet device may include a body of solid material in which at least one constrictive passage is provided. The constrictive passage may be constantly open and serve to allow passage of liquid product back and forth between the liquid reservoir and the liquid chamber.
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