Abnormal warning apparatus and detecting device for fluid circulating system

Abstract

An abnormal warning apparatus and detecting device that can be applied widely in a fluid circulating system is provided. The abnormal warning apparatus essentially includes a brightness tuning device, a light detecting unit, an analysis circuit, a light emitter, and an alarm. The ray of the light emitter penetrates through the tube having the brightness tuning device and enters the light detecting unit on the other side. After that, the various voltages transformed from the received ray with strong or week brightness or no light received are entered into the analysis circuit, then the voltages are determined to be normal or abnormal by comparing them with a standard voltage. The alarm goes off to warn with sound or light based on an output of abnormal voltage if the flow stops or becomes insufficient.

Description

BRIEF DESCRIPTION OF DRAWINGS

The foregoing aspects and many of the attendant advantages of this invention will be more readily appreciated as the same becomes better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:

FIG. 1 shows a schematic diagram of the fluid circulating system and the abnormal warning apparatus of the present invention;

FIG. 2 shows the schematic diagram of the transparent pipe of the abnormal warning apparatus of the present invention;

FIG. 3 shows the schematic diagram of the circuit board of the abnormal warning apparatus of the present invention;

FIG. 4 shows a fabricated diagram of the abnormal warning apparatus of the present invention;

FIG. 5 shows the circuitry of the abnormal warning apparatus of the present invention;

FIG. 6 shows a diagram of the round transparent pipe of the present invention;

FIG. 7 is a schematic diagram of the fluid circulating system in the normal state;

FIG. 8 is a schematic diagram of the fluid circulating system in the abnormal state;

FIG. 9 is a schematic diagram of the fluid circulating system in the normal state of another embodiment;

FIG. 10 is a schematic diagram of the fluid circulating system in the abnormal state of another embodiment.

Claims

1. An detecting device used in a fluid circulating system having liquid which is designed to flow along a channel, wherein the detecting device includes: a brightness tuning device disposed in the channel, and moving in response to the flow rate, so that the brightness tuning device changes a path of light projected on it;a light detecting unit disposed on one side of the channel, and outputting a corresponding electronic signal in response to the brightness of the light emitting into the light detecting unit through the channel; andan analysis circuit coupled to the light detecting unit for receiving the electronic signal, and determining a flow condition of the liquid based on the electronic signal.

2. The detecting device according to claim 1, wherein the brightness tuning device includes a light stopper which changes depending upon whether a projecting light passes or not; and the light detecting unit outputs the corresponding electronic signal based on whether the light enters the light detecting unit through the channel or not.

3. The detecting device according to claim 1, wherein the brightness tuning device includes an opaque part.

4. The detecting device according to claim 3, wherein the opaque part of the brightness tuning device is pushed out of a detecting range of the light detecting unit when the liquid flows normally.

5. The detecting device according to claim 3, wherein the opaque part of the brightness tuning device is pushed into a detecting range of the light detecting unit when the liquid flows normally.

6. The detecting device according to claim 1, wherein the channel is arranged in a non-horizontal direction, so that the brightness tuning device moves in the channel only under the affect of its own weight.

7. The detecting device according to claim 1, wherein the channel has a narrow section and a wide section, an inner diameter of the narrow section is about the size of the brightness tuning device, and an inner diameter of the wide section is bigger than the size of the brightness tuning device.

8. The detecting device according to claim 7, wherein the channel is arranged in the non-horizontal direction, so that the narrow section is under the wide section.

9. The detecting device according to claim 8, wherein the light detecting unit is disposed in the narrow section.

10. The detecting device according to claim 8, wherein the light detecting unit is disposed in the wide section.

11. The detecting device according to claim 1, further including: a light emitter disposed on a different side of the channel from the light detecting unit for providing the light emitted into the light detecting unit.

12. The detecting device according to claim 11, wherein the light emitter is an LED, an organic electroluminescent diode, a polymeric electroluminescent diode, a resonant cavity LED, a laser diode or a vertical cavity surface emitting laser.

13. The detecting device according to claim 1, wherein the detecting device is fabricated into a box.

14. The detecting device according to claim 1, wherein the detecting device is disposed on a specific position in the channel.

15. The detecting device according to claim 1, wherein the channel is a cold water circulating path for heat dissipation.

16. The detecting device according to claim 15, wherein the detecting device is disposed on a specific position along the cold water circulating path.

17. An alarm device, which is used for a fluid circulating system and a liquid therein flows along a channel, the alarm device comprising: a brightness tuning device disposed on the channel, and moving in response to a flow rate, the brightness tuning device changes a path of light projected on it;a light detecting unit disposed on one side of the channel, and outputting corresponding electronic signals in response to a brightness of light emitting into the light detecting unit through the channel;an analysis circuit coupled to the light detecting unit for receiving the electronic signals, and determining the flow condition of the liquid based on the electronic signal, so as to output a corresponding analysis result; andan alarm coupled to the analysis circuit for receiving the result outputted from the circuit, and determining if the alarm should be sounded based on the result.

18. The alarm device according to claim 17, wherein the brightness tuning device includes a light stopper, which changes depending upon whether a projecting light passes or not, and the light detecting device outputs the corresponding electronic signal in response to whether the light emitting into the light detecting unit via the channel or not.

19. The alarm device according to claim 17, wherein the brightness tuning device includes an opaque part, which is pushed out of or into a detecting range of the light detecting unit by the liquid when the liquid flows normally.

20. The alarm device according to claim 17, further including: a light emitter disposed on a different side of the channel from the light detecting unit, so as to provide the light emitting into the light detecting unit;wherein the light emitter is a light-emitting diode, an organic electroluminescent diode, a polymeric electroluminescent diode, a resonant cavity LED, a laser diode, or a vertical cavity surface emitting laser.

21. The alarm device according to claim 17, wherein the alarm device is fabricated into a box.

22. The alarm device according to claim 17, wherein the alarm includes a sounding device producing a warning sound or beep.

23. The alarm device according to claim 17, wherein the alarm device includes LEDs