EJECTOR DEVICE
First Claim
1. Ejector device effective to generate a negative pressure by means of compressed air that is fed to an ejector (1) included in the device via a compressed-air duct (2), furthermore comprising an air suction duct (3), a pressure sensor (18) arranged in the air suction duct as well as an electrically activatable valve member (5) arranged in the compressed-air duct and effective for the regulation of the flow of compressed air to the ejector, as well as electrically supplied control electronics (6) which at least is adapted to actuate the valve member in response to the pressure in the air suction duct detected by the sensor, furthermore comprising an energy-storing member (7) in the form of an accumulator by which the control electronics is supplied with electricity, characterized in that, in addition to the compressed-air duct (2) and the air suction duct (3), the device also comprises a charging air duct (9), which in a first end connects to the compressed-air duct and with another end opens at a generator (8) that, via the charging air duct (9), is in flow communication with the compressed-air duct (2) and is driven by compressed air for the generation of electrical energy, which is brought into the accumulator (7) for charging the same.
2 Assignments
0 Petitions
Accused Products
Abstract
An ejector device effective to generate a negative pressure by element of compressed air fed to an ejector of the device via a compressed-air duct includes an air suction duct, a pressure sensor and an electrically activatable valve member arranged in the compressed-air duct for regulating the flow of compressed air to the ejector, as well as electrically supplied control electronics (6) adapted to actuate the valve member in response to the pressure in the air suction duct detected by the sensor. The device includes an accumulator by which the control electronics are supplied with electricity, and a generator, which via a charging air duct (9), is in flow communication with the compressed-air duct and is driven by compressed air for generating electrical energy, which is brought into the accumulator for charging the same.
18 Citations
12 Claims
- 1. Ejector device effective to generate a negative pressure by means of compressed air that is fed to an ejector (1) included in the device via a compressed-air duct (2), furthermore comprising an air suction duct (3), a pressure sensor (18) arranged in the air suction duct as well as an electrically activatable valve member (5) arranged in the compressed-air duct and effective for the regulation of the flow of compressed air to the ejector, as well as electrically supplied control electronics (6) which at least is adapted to actuate the valve member in response to the pressure in the air suction duct detected by the sensor, furthermore comprising an energy-storing member (7) in the form of an accumulator by which the control electronics is supplied with electricity, characterized in that, in addition to the compressed-air duct (2) and the air suction duct (3), the device also comprises a charging air duct (9), which in a first end connects to the compressed-air duct and with another end opens at a generator (8) that, via the charging air duct (9), is in flow communication with the compressed-air duct (2) and is driven by compressed air for the generation of electrical energy, which is brought into the accumulator (7) for charging the same.
Specification