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AssigneeDispensing Technologies B.V.
InventorsWilhelmus Johannes Joseph Maas, Paulo Nervo
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The invention relates to a device (1) for dispensing a liquid from a container (C), comprising a pump (2) having a suction side (S) that is adapted to be brought into fluid communication with the container (C), a spray nozzle (3) in fluid communication with a pressure side (P) of the pump (2) through an outlet channel (4), a pre-compression valve (5) arranged in the outlet channel (4), and a gas buffer (9) in fluid communication with the pressure side (P) of the pump (2) and with the spray nozzle (3). The gas buffer (9) may comprise a buffer chamber (10) in which a gas-filled resiliently deformable body (11) is arranged, and the gas buffer (9) may extend from the pressure side (P) of the pump (2) in a different direction than the outlet channel (4). The invention further relates to a system for dispensing a liquid, comprising a container (C) that is filled with the liquid and a dispensing device (1) of the type described above connected to the container (C). And the invention relates to a method for dispensing a liquid, comprising the steps of: —drawing the liquid from a container (C) and pressurizing the liquid by actuating a pump (2), wherein the container (C) and the pump (2) form part of a dispensing system; —guiding a part of the pressurized liquid to a spray nozzle (3) of the dispensing system; —spraying the liquid from the nozzle (3); —guiding another part of the pressurized liquid to a gas buffer (9) for temporary storage; and —spraying the stored liquid from the nozzle (3) when the pump (2) is not being actuated; wherein the pressurized liquid is guided from the pump (2) to the spray nozzle (3) in a different direction than from the pump (2) to the gas buffer (9).
Device for dispensing a liquid from a container, comprising:
Dispensing device according to any one of the preceding claims, wherein the gas buffer includes at least one opening for establishing the fluid communication with the pressure side of the pump and with the spray nozzle, the at least one opening being arranged in a part of the gas buffer facing the pump.
Dispensing device according to any one of the preceding claims, wherein the pre-compression valve and the gas buffer are arranged to define lower and upper limits, respectively, of a dispensing pressure of the spray.
Dispensing device according to any one of the preceding claims, wherein the pre-compression valve has a cracking pressure of about 2 to 4.5 bar, preferably about 3 to 3.5 bar.
Dispensing device according to any one of the preceding claims, wherein the at least one gas-filled resiliently deformable body substantially fills the buffer chamber.
Dispensing device according to any one of the preceding claims, wherein the pump includes a priming and/or venting mechanism.
System for dispensing a liquid, comprising a container that is at least partially filled with the liquid and a dispensing device according to any one of the preceding claims connected to the container.
Method for dispensing a liquid, comprising the steps of:
Dependencies are inferred from the claim text.