Device for pressure-dependent opening of a suction intake

摘要

The invention relates to a device (6) for pressure-dependent opening of a suction intake (10), comprising a suction jet pump (11), comprising a feed line (12), an outlet line (13) and the suction intake (10); a valve body (15), displaceably arranged inside the feed line (12) in the delivery direction (14) of the suction jet pump (11) and having an effective area (16) exposed to the feed pressure of the suction jet pump (11); and a spring element (17), arranged between the feed line (12) and the valve body (15), for applying a force in opposition to the feed pressure inside the feed line (12); wherein the effective area (16) of the valve body (15), and the spring element (17) are designed so that the valve body (15) closes the suction intake (10) so that it is fluid-tight below a predefined pressure inside the feed line (12) and opens said intake when the predefined pressure inside the feed line (12) is exceeded. The invention further relates to a fuel tank, comprising a device (6) for pressure-dependent opening of a suction intake (10).

主权项

1. A device for pressure-dependent opening of a suction intake, comprising:
a suction jet pump, comprising a feed line, an outlet line and the suction intake; a valve body, displaceably arranged inside the feed line in a delivery direction of the suction jet pump and having an effective area exposed to a feed pressure inside the feed line; a spring element, arranged between the feed line and the valve body, configured to apply a force in opposition to the feed pressure inside the feed line; wherein the effective area of the valve body, and the spring element are operable such that, when the feed pressure inside the feed line is below a predefined feed pressure, the spring element is configured to apply the force on the valve body to close the suction intake such that the suction intake is fluid-tight, and, when the feed pressure inside the feed line exceeds the predefined feed pressure, the feed pressure is configured to apply a force on the valve body to open the suction intake against the force of the spring element and having a sealing element to engage said suction intake; and wherein the suction intake is configured to suction a fluid from an intake separate from said feed line wherein said fluid from said suction intake is delivered to said outlet line of said device and wherein said sealing element moves along the delivery direction to open and close said suction intake.