Liquid dispenser with a discharge head

Patent metadata

Field	Value
Publication number	US-10946401-B2
Application number	US-201716314078-A
Country	US
Kind code	B2
Filing date	Jul 10, 2017
Priority date	Jul 20, 2016
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

A discharge head for discharging liquid as an atomized spray jet and as a non-atomized liquid stream or as individual droplets. The discharge head fastening fastens to a base unit and has a liquid outlet through which liquid is discharged from a reservoir into the atmosphere, and a liquid inlet through which liquid is conducted out of the reservoir to the liquid outlet. An internal part is arranged inside an outlet channel, and a spray opening is provided on the internal part. The internal part and the outlet channel are relatively displaceable so that in a first position a bypass duct is produced between an internal wall of the outlet channel and an outer face of the internal part, the flow resistance thereof being lower than the spray duct, and in a second position is partially closed wherein the flow resistance of the bypass duct is greater than the spray duct.

First claim

The invention claimed is:

1. A liquid dispenser comprising:
a base unit with a liquid reservoir for receiving liquid before a discharge thereof;
a discharge head for fastening to the base unit of the liquid dispenser; and
a pump device that is configured to be actuated by a relative translatory movement of the discharge head relative to the base unit and that conveys liquid out of the liquid reservoir into the discharge head or the liquid reservoir is configured as a pressure accumulator and the liquid dispenser has a valve device configured to be actuated by a relative translatory movement of the discharge head relative to the base unit and conveys liquid out of the liquid reservoir into the discharge head;
the discharge head comprising a housing which is configured for stationary or linearly movable or linearly and rotatably movable fastening to the base unit of the liquid dispenser;
the discharge head having a liquid outlet through which liquid is configured to be discharged from the liquid reservoir out of the discharge head;
the discharge head having a liquid inlet through which liquid is conducted out of the liquid reservoir to the liquid outlet;
the discharge head being configured for selectively discharging liquid either in the form of an atomized spray jet and in the form of a non-atomized liquid stream or individual droplets;
the liquid outlet having an outlet channel penetrating the housing;
an internal part being arranged inside the outlet channel, a spray opening at an end of a spray duct being provided on a front face of said internal part facing outward; and
the internal part and the outlet channel being displaceable relative to one another so that in a first relative position a bypass duct is produced between an inner wall of the outlet channel and an outer face of the internal part, whereby the bypass duct has a flow resistance being lower than that of the spray duct, and the bypass duct bypasses the spray duct and the spray opening, and in a second relative position this bypass duct is at least partially closed by the inner wall of the outlet channel so that the flow resistance of the bypass duct is greater than that of the spray duct.

2. The liquid dispenser as claimed in claim 1 , wherein:
in the first relative position, the bypass duct is closed so that liquid may only be dispensed through the spray duct, and/or
in the second relative position, an inlet into the spray duct is closed so that liquid may only be dispensed through the bypass duct.

3. The liquid dispenser as claimed in claim 1 , wherein:
the inner wall of the outlet channel is directly formed by surfaces of the housing and the internal part is displaceable relative to the housing, or
the inner wall of the outlet channel is formed by an outlet sleeve which is displaceable relative to the housing and is thus also displaceable relative to the internal part which is part of the housing.

4. The liquid dispenser as claimed in claim 1 , wherein:
the spray duct comprises a swirl chamber, liquid flowing therein in a direction deviating from a radial direction.

5. The liquid dispenser as claimed in claim 1 , wherein:
the internal part and the outlet channel are linearly movable in a translatory manner relative to one another.

6. The liquid dispenser as claimed in claim 1 , comprising:
a switching surface provided for manual actuation, a relative position of the outlet channel being able to be changed thereby relative to the internal part;
wherein the switching surface is provided directly on an outlet sleeve which is movable relative to the housing or on the internal part which is movable relative to the housing.

7. The liquid dispenser as claimed in claim 1 , comprising:
a switching surface provided for manual actuation, a relative position of the outlet channel being able to be changed thereby relative to the internal part;
wherein the switching surface is coupled by a mechanism to the outlet channel which is movable relative to the housing or to the internal part which is movable relative to the housing.

8. The liquid dispenser as claimed in claim 7 , further comprising:
a restoring spring which acts between the internal part and the outlet channel, so that the internal part and the outlet channel are always acted upon by force in a direction of the first or the second relative position and are displaced counter to the force of the restoring spring by an action of force on the switching surface.

9. The liquid dispenser as claimed in claim 1 , wherein:
the discharge head has a variable internal volume for liquid, which is increased by pushing in an outlet sleeve; and/or
the outlet channel has a shape tapering outward; and/or
the bypass duct surrounds the internal part in an annular manner.

10. The liquid dispenser as claimed in claim 8 , wherein:
the switching surface is provided on a side of the discharge head opposite from the base unit for a relative displacement of the internal part and the outlet channel to one another.

11. The liquid dispenser as claimed in claim 1 , wherein:
the discharge head is configured to be rotatable about a rotational axis relative to the base unit; and
a mechanism is provided, a rotational movement of the discharge head effecting thereby a relative displacement of the outlet channel relative to the internal part.

12. The liquid dispenser as claimed in claim 11 , wherein:
the mechanism comprises a guide element with an angular-dependent spacing from the rotational axis and which is provided on the internal part or the outlet sleeve of the discharge head or on the base unit; and
the mechanism comprises a guide slider which is in engagement with the guide element and which is provided on the base unit or on the internal part or the outlet sleeve of the discharge head.

13. The liquid dispenser as claimed in claim 1 , wherein:
the discharge head is provided rotatably on the base unit; and
the discharge head has a mechanism by which a relative position of the internal part is adjustable relative to the outlet channel.

14. The liquid dispenser as claimed in claim 1 , wherein:
the internal part has an outer wall portion and a spray component introduced therein.

15. The liquid dispenser as claimed in claim 1 , wherein:
the internal part has a spray component introduced therein, wherein the spray component comprises the spray opening and forms at least part of an inner wall of a swirl chamber.

16. The liquid dispenser as claimed in claim 1 , wherein:
in the first relative position, the bypass duct is closed so that liquid may only be dispensed through the spray duct; and
in the second relative position, an inlet into the spray duct is closed so that liquid may only be dispensed through the bypass duct.

17. A liquid dispenser comprising:
a base unit with a liquid reservoir for receiving liquid;
a discharge head comprising a housing connected to the base unit; and
a pump device configured to be actuated by a relative translatory movement of the discharge head relative to the base unit and that conveys liquid out of the liquid reservoir into the discharge head or the liquid reservoir is configured as a pressure accumulator and the liquid dispenser has a valve device configured to be actuated by a relative translatory movement of the discharge head relative to the base unit and conveys liquid out of the liquid reservoir into the discharge head;
the discharge head having a liquid outlet through which liquid is discharged from the liquid reservoir out of the discharge head;
the discharge head having a liquid inlet through

Assignees

• Aptar Radolfzell Gmbh

Inventors

• Baumann Tobias

Classifications

• B05B11/1053 Primary

  combined with means, other than pressure, for automatically opening a valve during actuation; combined with means for automatically removing closures or covers from the discharge nozzle during actuation · CPC title

• B05B11/1001

  Piston pumps (B05B11/1087, B05B11/1088, B05B11/109 take precedence) · CPC title

• B05B1/12 Primary

  capable of producing different kinds of discharge, e.g. either jet or spray (having selectively-effective outlets B05B1/16) · CPC title

• B05B1/3452

  the cooperating elements being movable, e.g. adjustable relative to one another · CPC title

• B05B1/3468

  with means for controlling the flow of liquid entering or leaving the swirl chamber (B05B1/3452 takes precedence) · CPC title