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Flow sensor

A flow sensor and water inlet channel technology, applied in the field of flow sensors, can solve problems such as inability to detect leakage flow, achieve the effect of reducing water flow resistance and increasing water flow velocity

Active Publication Date: 2014-04-16
江苏正本净化节水科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it leaks at a flow rate of 60mL / min, 86.4L of water will leak after 24 hours, which will also cause relatively large economic losses to the user. At present, the flow sensors of known technologies that can be used in tap water channels cannot detect water less than 100mL / min. leak flow in min

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0033] See figure 1 , the flow sensor of this embodiment includes a water inlet 1, a water outlet 2, a first water inlet channel 3, a second water inlet channel 4, an impeller chamber 5, an impeller 6, a first magnet 7, a micro-pressure opening valve 8, a second A Hall element, moving core 9 , second magnet 10 , second Hall element or reed switch 11 and filter element 13 .

[0034] The inlets of the first water inlet channel 3 and the second water inlet channel 4 are both connected to the water inlet 1 . The outlets of the first water inlet channel 3 and the second water inlet channel 4 communicate with the impeller cavity 5 respectively. The outlet of the impeller cavity 5 communicates with the water outlet 2 . The impeller 6 is arranged in the impeller cavity 5, and the rotating shaft 6-1 of the impeller 6 is arranged horizontally. The first magnet 7 is provided with two pieces, and the two first magnets 7 are respectively arranged at symmetrical positions on both sides o...

Embodiment 2）

[0043] See figure 2 , the present embodiment is basically the same as Embodiment 1, except that a second spring 12 is also included.

[0044] The second spring 12 is arranged in the second water inlet channel 4 . One end of the second spring 12 abuts against the moving core 9 , and the other end abuts against the inner wall of the second water inlet channel 4 .

[0045] The reset power of the moving core 9 in this embodiment is the elastic force of the second spring 12 , and the moving direction of the moving core 9 is preferably a horizontal direction.

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Abstract

The invention discloses a flow sensor. The flow sensor comprises a water inlet, a water outlet, a first water inlet channel, a second water inlet channel, an impeller cavity, a first magnet, a micro-pressure opening valve and a first Hall element, wherein inlets of the first water inlet channel and the second water inlet channel are communicated with the water inlet; outlets of the first water inlet channel and the second water inlet channel are respectively communicated with the impeller cavity; the outlet of the impeller cavity is communicated with the water outlet; an impeller is arranged in the impeller cavity; the first magnet is arranged on the impeller; the first Hall element is arranged in the position corresponding to the first magnet on the outer side of the impeller cavity; and the micro-pressure opening valve is arranged in the first water inlet channel. The flow sensor disclosed by the invention is provided with the two water inlet channels which are respectively used for detecting large water flow rate and small water flow rate, and the micro-pressure opening valve is arranged in the first water inlet channel, so that the flow sensor disclosed by the invention can detect the large flow rate which is more than 4L / min and the small flow rate which is less than 200mL / min, and further reduce the startup flow rate to 30mL / min.

Description

technical field [0001] The present invention relates to flow sensors. Background technique [0002] The flow sensor is a device that can detect the signal of the fluid flow in the pipeline, and is often used in the control system of fluid machinery. Combined with appropriate mechanical and / or electrical devices, flow sensors can be used to totalize fluid volumes, or to detect instantaneous flow rates. The device used to accumulate the total amount of water in the control system of the water treatment device is called a water meter, and the device used to detect the instantaneous flow is called a flow meter. Both the water meter and the flow meter can be used to combine flow sensors with appropriate mechanical devices and / or Electrical installations are designed and manufactured in a combined manner. [0003] There are currently three commonly used methods for detecting instantaneous flow or the principle of flow sensors: [0004] 1. On the impeller that rotates when the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/28G01F1/58
Inventor 徐立农黄樟焱
Owner 江苏正本净化节水科技实业有限公司