Container assembly for a pump
AssigneeFluid-O-Tech Group S.R.L.
InventorsDiego Andreis, Pierpaolo Lucchesi
Life of this patent
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Abstract
A container assembly (10) for a pump is described, provided with at least one pumping group (12, 14, 16, 18) and with at least one system (20) for transmitting power to such pumping group (12, 14, 16, 18). The container assembly (10) comprises at least one elastic element (26) sealingly housed inside such container assembly (10) at a predefined internal wall (28) thereof. Inside the elastic element (26), at least one cavity (32) is obtained which defines a corresponding air chamber configured for damping the variations of volume and the expansion of the fluid contained inside the pump following a possible change of state of the fluid itself when subjected to temperatures lower than its freezing point.
Claims13
Container assembly (10) for a pump provided with at least one pumping group (12, 14, 16, 18) and with at least one system (20) for transmitting power to said pumping group (12, 14, 16, 18), said at least one system having an axis of rotation, the container assembly (10) comprising at least one elastic element (26) sealingly housed inside said container assembly (10) at a predefined internal wall (28) thereof, the container assembly (10) being characterized in that inside on the surface of the elastic element (26), at least one cavity (32) is formed between a plurality of shaped walls (34) of said elastic element (26), adjacent to said predefined wall (28) of said container assembly (10) and said cavity being symmetrically aligned with and intersecting the axis of rotation, said cavity (32) and said predefined wall (28) of said container assembly (10) defining a corresponding air chamber, said air chamber being configured to allow deformation of said elastic element (26) for damping the variations of volume and the expansion of the fluid contained inside the pump following a change of state of said fluid when subjected to temperatures lower than its freezing point.
Container assembly (10) for a pump provided with at least one pumping group (12, 14, 16, 18) and with at least one system (20) driven by an electric motor for transmitting power to said pumping group (12, 14, 16, 18), the container assembly (10) comprising at least one elastic element (26) sealingly housed inside said container assembly (10) at a predefined internal wall (28) thereof, the container assembly (10) being characterized in that inside on the surface of the elastic element (26), at least one cavity (32) is obtained formed which defines a corresponding air chamber symmetrically aligned with and intersecting a rotation axis of the electric motor, said cavity (32) and said predefined wall (28) of said container assembly (10) together forming an air chamber, said air chamber being configured for damping the variations of volume and the expansion of the fluid contained inside the pump following a change of state of said fluid when subjected to temperatures lower than its freezing point, the container assembly further characterized in that it comprises at least one retention element (38) configured for maintaining the elastic element (26) sealingly stopped inside the container assembly (10);
- wherein an assembly of the elastic element (26) and the retention element (38) are held in position inside the container assembly (10) by a circumferential portion (40) of the surface of said container assembly (10), thereby generating a narrowing of said circumferential portion (40) which blocks a possible movement, towards the side of the container assembly (10) where the pumping group (12, 14, 16, 18) is housed, of the assembly constituted by the elastic element (26) and by the retention element (38).
Pump provided with at least one pumping group (12, 14, 16, 18) having a shaft, with at least one system (20) keyed on the shaft for transmitting power to said pumping group (12, 14, 16, 18) and with a container assembly (10), said container assembly (10) comprising at least one elastic element (26) sealingly housed inside said container assembly (10) at a predefined internal wall (28) thereof, the container assembly (10) being characterized in that inside on the surface of the elastic element (26), at least one cavity (32) is formed between a plurality of shaped walls (34) of said elastic element (26), said cavity (32) and said predefined wall (28) together defining a corresponding air chamber symmetrically aligned with and intersecting a center axis of the shaft, said air chamber being configured to allow deformation of said elastic element (26) for damping the variations of volume and the expansion of the fluid contained inside the pump following a possible change of state of said fluid when subjected to temperatures lower than its freezing point.
Container assembly (10) for a pump provided with at least one pumping group (12, 14, 16, 18) and with at least one system (20) for transmitting power to said pumping group (12, 14, 16, 18), said at least one system having an axis of rotation, the container assembly (10) comprising at least one elastic element (26) sealingly housed inside said container assembly (10) at a predefined internal wall (28) thereof, the container assembly (10) inside the elastic element (26), at least one cavity (32) is formed between a plurality of shaped walls (34) of said elastic element (26) completely incorporated in the material with which the elastic element (26) is manufactured and symmetrically aligned with the axis of rotation, said cavity (32) defining a corresponding air chamber, said air chamber being configured to allow deformation of said elastic element (26) for damping the variations of volume and the expansion of the fluid contained inside the pump following a change of state of said fluid when subjected to temperatures lower than its freezing point.
Dependencies are inferred from the claim text.