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US 2003/0150491 A1Published application
Vacuum regulator for maintaining a substantially constant vacuum in a vacuum system
OwnerHenrik Idensjoinventor
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OwnerHenrik Idensjoinventor
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The invention relates to a vacuum regulator (1) for maintaining a substantially constant vacuum in a vacuum system (2). The vacuum regulator (1) includes a main valve arranged to control a supply of air to the vacuum system (2). The main valve includes a valve seat (3) defining a passage (4) arranged to lead air to the vacuum system (2) and a valve body (5) moveably arranged in a direction between a closed position and a maximally open position in order to regulate the size of a minimum flow area (18) between the valve seat (3) and the valve body (5). A force (19) caused by the vacuum acts on the valve body (5) in a direction towards the closed position. The valve seat (3) and the valve body (5) have such a design, that the value of the force (19), in a continuous way, increases with the degree of opening of the valve body (5).
A vacuum regulator (1) for maintaining a substantially constant vacuum in a vacuum system (2), wherein the vacuum regulator (1) comprises a main valve arranged to control a supply of air to the vacuum system (2), wherein the main valve comprises a valve seat (3) defining an passage (4) arranged to lead air to the vacuum system (2) and a valve body (5) moveably arranged in a direction between a closed position and a maximally open position in order to regulate the size of a minimum flow area (18) between the valve seat (3) and the valve body (5) and wherein a force (19) caused by the vacuum acts on the valve body (5) in a direction towards the closed position, characterised in that the valve seat (3) and the valve body (5) have such design, that the value of said force (19), in a continuous way, increases with the degree of opening of the valve body (5).
A vacuum regulator according to any one of the preceding claims, characterised in that the size of the minimum flow area (18) increases in a continuous way in relation to the degree of opening of the valve body (5).
A vacuum regulator according to any one of the preceding claims, characterised in that the surface of the valve seat (3) defines a tapering hole.
A vacuum regulator according to any one of the preceding claims, characterised in that the valve body (5) has a tapering shape.
A vacuum regulator according to any one of the preceding claims, characterised in that the valve body (5) is movable in an axial direction in relation to the valve seat (3).
A vacuum regulator according to any one of the preceding claims, characterised in that the vacuum regulator (1) comprises control means arranged to control the movement of the valve body (5).
A vacuum regulator according to any one of the preceding claims, characterised in that the control means is arranged to control the movement of the valve body (5) depending on the actual vacuum in the vacuum system (2) and a desired vacuum level in the vacuum system (2).
Dependencies are inferred from the claim text.