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A seam-type air-flow lead-jetting device

A technology of airflow injection and jet cavity, which is applied in jet pumps, non-volume pumps, machines/engines, etc., can solve the problems of difficulty in ensuring the vacuum degree of low-pressure chambers, increased gas consumption of high-pressure gases, and complex device structures, etc. Low pressure, high flow rate of vacuum ejection and low air consumption

Inactive Publication Date: 2005-02-16
深圳市旋风流体科技有限公司
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AI Technical Summary

Problems solved by technology

However, if the diameter of the circular tube is increased, the distance from the center to the edge of the circular tube will increase accordingly, making it difficult for the high-pressure gas in the center to exchange energy with the low-pressure gas at the edge, resulting in a sharp increase in the gas consumption of the high-pressure gas; if the circular tube is increased If the quantity is too large, the structure of the whole device will be complicated, the cost will increase, and the vacuum degree of the low-pressure chamber will be difficult to guarantee.

Method used

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  • A seam-type air-flow lead-jetting device
  • A seam-type air-flow lead-jetting device

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Embodiment Construction

[0023] The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

[0024] Examples such as figure 1 , 2 As shown, a slot-type air flow injection device includes a high-pressure chamber 1, a jet chamber 3 and a low-pressure chamber 2, one end of the jet chamber 3 communicates with the high-pressure chamber 1 through a channel 17, and the other end of the jet chamber 3 is provided with an exhaust port 14 , the high-pressure chamber 1 feeds high-pressure gas into the jet chamber 3 through the passage 17, and the side wall of the jet chamber 3 is provided with a rectangular passage opening 18, which is divided into three-stage rectangular passage openings 181, 182, 183, and the jet chamber 3 The three-stage rectangular channel openings 181, 182, and 183 communicate with the low-pressure chamber 2 respectively. The channel 17 is composed of a rectangular slit 1700 and a wedge-shaped channel 170 t...

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Abstract

This invention relates to a slot-type gas flow injection device including a high pressure cavity, an injection cavity the low pressure cavity, among which, one end of the injection device is connected with the high pressure cavity via a channel, the other end has an exhaust outlet, the high pressure cavity penetates high pressure gas to the inject cavity via the channel, a channel opening is set on the sidewall of inject cavity which is connected with a low pressure cavity via the channel, absorbs gas in the low cavity via the channel and exhausts gas via the outlet characterizing that the channel is composed of a rectangular slot and its connected wedge channel changing from narrow to wide speeds-up expansion after passing through them. The cross section of the infect cavity is rectangle.

Description

technical field [0001] The invention relates to a device for obtaining vacuum by using high-pressure gas, in particular to an airflow injection device. Background technique [0002] At present, the device that utilizes high-pressure gas to obtain vacuum adopts a circular tube for its airflow injection channel (equivalent to the jet chamber of the present invention). This device can meet the vacuum degree requirements of the low-pressure chamber when the vacuum ejection flow rate is small. However, when the required vacuum injection flow rate is large, in order to ensure the vacuum degree of the low-pressure chamber, the diameter of the circular tube must be increased or the number of circular tubes must be increased (that is, multiple circular tubes are arranged horizontally side by side). However, if the diameter of the circular tube is increased, the distance from the center to the edge of the circular tube will increase accordingly, making it difficult for the high-pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04F5/20F04F5/44
Inventor 李天维
Owner 深圳市旋风流体科技有限公司
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