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Liquid flow sensor thermal interface methods and systems

A sensor and fluid technology, applied in the field of flow channel and pipeline equipment, fluid flow sensor, which can solve the problems of dissipation, reduced signal quality, material incompatibility, explosion-proof application, etc.

Inactive Publication Date: 2007-01-24
HONEYWELL INT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many cases, fluid should not come into contact with the sensor and / or associated heater due to material incompatibility, explosion-proof applications, or even medical risks
However, the material typically dissipates energy from the fluid and sensor, reducing thermal efficiency and thus signal quality

Method used

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  • Liquid flow sensor thermal interface methods and systems
  • Liquid flow sensor thermal interface methods and systems
  • Liquid flow sensor thermal interface methods and systems

Examples

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Embodiment Construction

[0020] The specific values ​​and structures illustrated in these non-limiting examples may vary and are illustrative only to illustrate at least one embodiment of the invention, and are not intended to limit the scope of the invention.

[0021] figure 1 A block diagram of a sensor system 100 that may be implemented in accordance with an embodiment of the invention is illustrated. The system 100 includes a low thermal conductivity conduit 116 having a plurality of thermally conductive particles 118 on the walls of the conduit 116 . A plurality of detection elements 104 and 108 may be provided along the sensor substrate 102 opposite the detection medium 105 . Although a single sensor substrate 102 and detection medium 105 are described in figure 1 In the system 10, it is understood that alternative embodiments thereof may be configured with the functionality of one or more of the sensor substrates and one or more sets of associated sensor components.

[0022] The detection me...

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PUM

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Abstract

A sensor method and system are disclosed. A fluid flow sensor can be provided, which measures the thermal conductivity of a fluid. The sensor itself can be configured to comprimise one or more sensing element associated with sensor substrate. A heater can be associated with a said sensor wherein said heater provides heat to said fluid. A film component can also be provided that that isolates said fluid from said heater and said sensor, such that said film component conducts heat in a direction from said heater to said sensor, thereby forming a thermal coupling between said sensor, said heater and said fluid, which permits said sensor to determine a composition of said fluid by measuring thermal conductivity thereof without undersired losses of heat in other directions. The film component can be configured on or in the shaped of a tubing or a flow channel.

Description

technical field [0001] Embodiments generally relate to detection methods and systems. Embodiments also relate to fluid flow sensors. Embodiments additionally relate to use in flow channels and tubing associated with fluid flow sensors. Background technique [0002] Sensors have been used to measure flow rates in a variety of medical, process, and industrial applications, ranging from portable ventilators delivering anesthetics to large-scale processing equipment in chemical plants. In these applications, flow control is an inherent aspect of proper operation, which is accomplished in part by using flow sensors to measure the fluid flow rate within the flow system. In many flow systems, such as fuel cell flow systems containing a binary mixture of methanol and water, the chemical composition of the fluid may change frequently. [0003] Flow systems often require more than one fluid with different chemical and thermophysical properties. For example, in a semiconductor proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/684G01N25/18
CPCG01F1/6847G01N25/18
Inventor R·W·格曼B·D·斯佩尔德里奇R·A·阿尔德曼
Owner HONEYWELL INT INC