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A flow restrictor and method for reducing fluid resistance

A flow restrictor, liquid technology, applied in the direction of detecting fluid flow, application, respirator, etc. by measuring pressure difference, can solve the problems of small fluid resistance, difficult to measure low flow, etc., to eliminate fluid resistance and increase dynamic fluid measurement range. , the effect of reducing fluid resistance

Active Publication Date: 2016-06-15
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since it is difficult to cut very thin slits in the membrane, the fluid resistance is relatively small in this invention as it is difficult to measure low flow rates

Method used

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  • A flow restrictor and method for reducing fluid resistance
  • A flow restrictor and method for reducing fluid resistance
  • A flow restrictor and method for reducing fluid resistance

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Embodiment Construction

[0027] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0028] According to one aspect of the present invention, a variable flow restrictor is provided. The flow restrictor comprises a flexible metal sheet with a movable part; a liquid can pass through the valve body; The liquid can pass through the valve body, and when the flow of the liquid through the valve body and the elastic metal sheet increases, the displacement of the movable part will be increased, resulting in the flow of liquid passing through the flow restrictor. is mutable.

[0029] In order to reduce the fluid resistance when the flow rate increases, sparse elastic metal sheets with hanging objects are arranged beside the liquid-passing valve body. Since the pendant is in a tense state, the fluid resistance is large when the flow rate is small, and the fluid resistance is small when the flow rate increases. The resili...

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PUM

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Abstract

The present invention describes a restrictor for reducing fluid resistance at high flow rates. The invention also describes a device for reducing fluid resistance according to the method described above.

Description

technical field [0001] The present invention relates to a flow restrictor and a method for adjusting fluid resistance in a flow restrictor. Specifically, the present invention is used to reduce fluid resistance at high flow rates to increase the dynamic flow range. Background technique [0002] Measuring flow through a restrictor is a common method for both liquids and gases, such as restrictors in ventilators. Examples of ventilator applications are disclosed in US Patent 5,265,594 and Swedish Patent 529,989. [0003] In US Patent 5265594 it is disclosed how a flow restrictor measures gas flow by controlling the upflow of the gas channel in the valve. [0004] In Swedish patent 529989 it is disclosed how a flow restrictor measures the gas flow by regulating the flow down the gas channel of the valve. [0005] The specific form of the flow restrictor can be varied, for example, by directing the liquid to flow through at least one narrow channel, various forms of mesh, sin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/40
CPCA61B5/0876A61M16/00G01F1/42
Inventor 戈兰·西维斯
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD