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Flow sensor

一种流量传感器、流体的技术，应用在流量传感器领域，能够解决侵入传感器流道、传感器管道、传感元件故障、不能测量流体流量等问题

Inactive Publication Date: 2009-12-02
SMC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the above-mentioned conventional technology, there is concern that the moisture contained in the fluid, etc. may invade the upstream side sensor flow channel, sensor pipe and downstream sensor flow channel through the inner wall surface of the flow channel.
Therefore, failure of the sensing element arranged facing the sensor pipe due to intrusive moisture or the like may occur, so that the flow rate of the fluid cannot be reliably measured by the sensing element

Method used

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Embodiment Construction

[0017] exist figure 1 , reference numeral 10 denotes a flow sensor according to an embodiment of the present invention.

[0018] Such as Figures 1 to 4 As shown, the flow sensor includes: a body 14 having a flow channel 12 through which fluid (for example, air, nitrogen, etc.) 16 introduces an introduction channel 18 for guiding the fluid, and a rectifying element 20 disposed in the flow channel 12 rectifies (ie, straightens) the fluid flow and is capable of removing debris or the like from the fluid.

[0019] For example, the body 14 is formed of a metal material into a cylindrical shape, and has a first port 22 on one end thereof through which a fluid is supplied and a second port 24 on the other end thereof through which a fluid is discharged. Threads 22a, 24a are engraved on inner surfaces of the first and second ports 22, 24, respectively, to which fitting members (not shown) connected to pipes or the like can be screwed and connected. Here, when the fluid flows throu...

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PUM

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Abstract

A flow sensor includes a detector provided on a side surface of a body formed in a tubular shape. First and second passages formed in the interior of the body communicate with an introduction passage of the detector via first and second sensor passages. The first and second sensor passages penetrate through and open respectively on first and second projections, which project at predetermined heights from an inner circumferential surface of the body, communicating with the first and second passages. A fluid, which flows from the first passage and into the first sensor passage, after being guided to the introduction passage and the flow rate thereof detected by a detector, flows through the second sensor passage and into the second passage.

Description

technical field [0001] The present invention relates to a flow sensor capable of measuring the flow of fluid, and more particularly, to a flow channel structure for such a flow sensor. Background technique [0002] Heretofore, for example, a flow sensor having a flow path through which the fluid flows and a sensor disposed facing the flow path for measuring the flow rate of a fluid such as air have been known. Such a flow sensor, for example, as disclosed in Japanese Patent Laid-Open No. 2003-149017, has a flow path through which a fluid flows is formed inside a main block. The main block is equipped with an upstream sensor channel connected to an upstream side of the channel and a downstream sensor channel connected to a downstream side of the channel. In addition, the sensor pipe interconnects the upstream sensor channel and the downstream sensor channel, and a sensor element is provided in the sensor channel. [0003] However, in the above-mentioned conventional technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/00
CPCG01F5/00G01F15/00G01F1/42G01F1/58G01F1/00G01F15/14
Inventor 内山英树郡司健大岛裕太坂口弘伦
Owner SMC CORP