Vacuum supply devices

一种抽真空装置、喷射装置的技术，应用在机器/发动机、非容积式泵、机械设备等方向，能够解决制造费用大等问题，达到小尺寸、小能量消耗、小操作力的效果

Inactive Publication Date: 2006-10-18
FESTO AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manufacturing costs associated with this structure are relatively large

Method used

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  • Vacuum supply devices
  • Vacuum supply devices

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Embodiment Construction

[0023] The evacuation device, generally designated by the reference numeral 1, contains at least one evacuation unit 2, which is equipped with at least one injection device 3, by means of which a negative pressure can be generated.

[0024] In the present embodiment, the injection device 3 is installed in the housing 4 of the evacuation unit 2 . The spraying device comprises a spraying nozzle 5 and a receiving nozzle 6 arranged behind it. In the exemplary embodiment shown, the injection nozzle 5 and the receiving nozzle 6 are separate components, but they can also be designed without problems as a structural unit, for example as a cylindrical structural unit.

[0025] The spray nozzle 5 is penetrated by a spray nozzle channel 7 . A receiving nozzle channel 8 passes through the receiving nozzle 6 , preferably concentrically with the spray nozzle channel 7 .

[0026] During operation of the evacuation device, a fluid under supply pressure is fed into the spray device 3 via the...

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Abstract

The vacuum production device (1) incorporates at least one ejector device (3), which has a radiation nozzle (5) followed by a catchment nozzle (6) and in the transition area between the radiation nozzle and the catchment nozzle has a defined suction zone (21). At the outlet side end of the catchment nozzle a catchment space (23) is provided for the fluid flowing through the catchment nozzle. From this space emerges an outflow channel (24). Devices are provided for influencing the fluid flow through the outflow channel. The outflow channel nominal diameter (dA) at the position of the narrowest cross-section of the outflow channel is greater than the radiation nozzle channel nominal (7) diameter (dS) and is smaller than the catchment nozzle channel nominal diameter (dF) measured at the position of the narrowest cross-section of the catchment nozzle channel.

Description

technical field [0001] The invention relates to an evacuation device having at least one injection device with an injection nozzle and a receiving nozzle arranged behind the injection nozzle and a suction area defined in the transition area between the injection nozzle and the receiving nozzle, A receiving chamber for the fluid flowing through the receiving nozzle is provided at the outlet of the receiving nozzle, from which the outlet channel leads; the vacuuming device also has means for influencing the flow of fluid flowing through the outlet channel. Background technique [0002] Show a kind of this type of vacuuming device by DE 4302951C1, be connected with the output end of receiving nozzle and be provided with a receiving cavity in its housing, it receives the fluid that flows out from receiving nozzle, and fluid can pass through a connecting behind The exhaust channel flows to the outside atmosphere. The receiving chamber serves to guide a movable piston that is sel...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): F04F5/52F04F5/46F04F5/48
CPCF04F5/461F04F5/52
InventorJ·斯丁格尔V·昆德特
OwnerFESTO AG & CO KG