Anti-condensation water immersion sensor

Abstract

The utility model discloses an anti-condensation water immersion sensor, which comprises a shell, an electrode is arranged in the shell, an insulator is arranged between the electrode and the shell, a first groove is formed among the insulator, the electrode and the shell, a water passing groove is arranged on the groove wall of the first groove, the water passing groove is arranged on the shell, and a water outlet is arranged on the shell. The electrode is covered with a hydrophobic layer, the hydrophobic layer extends into the insulator, and the top of the electrode is exposed out of the hydrophobic layer. Compared with the prior art, when no water exists, the shell and the electrodes are separated through the insulators and are not conducted; when water enters the first groove from the water passing groove, the water is communicated with the shell and the electrode exposed out of the top, and the electrode is communicated with the shell, so that water leakage can be detected. Water adhesion is prevented by covering the electrodes with the hydrophobic layers, water can be effectively prevented from remaining on the electrodes, misinformation of the water immersion sensor is reduced accordingly, and the water immersion sensor is simple in overall structure, low in production difficulty and low in manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to a sensor for preventing condensation and water immersion. Background Technology

[0002] Water immersion sensors are based on the principle of liquid conductivity. They use electrodes to detect the presence of water and then convert the result into an output. Currently, they are one of the important industrial devices used in the field of intelligent systems, widely applied in data centers, communication equipment rooms, power plants, warehouses, archives, and any other place requiring waterproofing. Once a leak is detected, the alarm can immediately sound to prevent significant losses and damage. Most common water immersion sensors on the market currently operate on the principle of liquid conductivity, relying on water to connect the two electrodes for detection. When the water is drained or reduced, because metal is not hydrophobic, water can easily remain on the electrodes, causing false alarms from the water immersion sensor. Utility Model Content

[0003] This invention provides an anti-condensation water immersion sensor to solve the problem of false alarms in existing water immersion sensors.

[0004] This utility model provides an anti-condensation water immersion sensor, including a housing, an electrode inside the housing, an insulator between the electrode and the housing, a first groove formed between the insulator, the electrode and the housing, a water passage groove on the wall of the first groove, the water passage groove being disposed on the housing, a hydrophobic layer covering the electrode, the hydrophobic layer extending into the insulator, and the top of the electrode protruding from the hydrophobic layer.

[0005] Preferably, the bottom of the water trough is flush with the upper surface of the insulator.

[0006] Preferably, the housing contains a circuit board, the electrodes are fixed on the circuit board, and the circuit board is located below the insulator.

[0007] Preferably, a retaining ring is embedded in the shell wall of the outer casing, and the circuit board is disposed between the retaining ring and the outer casing. The retaining ring is located between the insulator and the outer casing.

[0008] Preferably, the electrode is fixed to the circuit board by screws.

[0009] Preferably, it also includes a cable, which is fixed to the housing via an interface.

[0010] Preferably, the insulator extends between the interface and the circuit board.

[0011] Preferably, the four water channels are evenly distributed on the outer shell.

[0012] Preferably, the hydrophobic layer is a rubber tube.

[0013] Preferably, the insulator is an epoxy resin adhesive.

[0014] Compared with existing technologies, in this invention, when there is no water, the outer shell and the electrode are isolated by an insulator and are not conductive; when water enters the first groove from the water channel, the water connects the outer shell and the exposed electrode, and the electrode and the outer shell are conductive, thus enabling the detection of water leakage. By covering the electrode with a hydrophobic layer to prevent water adhesion, water residue on the electrode can be effectively prevented, thereby reducing false alarms of the water immersion sensor. The overall structure is simple, easy to manufacture, and has low production cost. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure label:

[0018] 1. Outer shell, 11. Water channel, 2. Electrode, 3. Insulator, 4. First groove, 5. Hydrophobic layer, 6. Circuit board, 7. Retaining ring, 8. Screw, 9. Cable, 100. Interface. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] See attached document Figure 1This embodiment provides an anti-condensation water immersion sensor, including a housing 1, an electrode 2 disposed inside the housing 1, and an insulator 3 between the electrode 2 and the housing 1. The insulator 3 isolates the electrode 2 from the housing 1, preventing them from conducting. A first groove 4 is formed between the insulator 3, the electrode 2, and the housing 1. The insulator 3 forms the bottom of the first groove 4. A water-passing groove 11 is provided on the wall of the first groove 4 and is disposed on the housing 1. A hydrophobic layer 5 covers the electrode 2, extending into the insulator 3, with the top of the electrode 2 exposed above the hydrophobic layer 5. In this invention, both the housing 1 and the electrode 2 are made of conductive materials. When there is no water, the housing 1 and the electrode 2 are isolated by the insulator 3 and are not conductive. When water enters the first groove 4 from the water-passing groove 11, the water connects the housing 1 with the exposed electrode 2, making them conductive and enabling the detection of water leakage. Because the electrode 2 is covered with a hydrophobic layer 5, water forms droplets on the surface of the hydrophobic layer 5 instead of adhering to the surface. As a result, when the water is drained or reduced, no water will remain on the electrode 2, and no false alarm will be generated.

[0021] As another embodiment of this utility model: the bottom of the water tank 11 is flush with the upper surface of the insulator 3.

[0022] In another embodiment of this utility model: a circuit board 6 is provided inside the outer casing 1, and the electrode 2 is fixed on the circuit board 6. The circuit board 6 is located below the insulator 3. When there is water, the water connects the outer casing 1 with the exposed electrode 2, and the circuit board 6 senses the change in conductivity and detects it.

[0023] One installation method for circuit board 6: the outer side of the retaining ring 7 is embedded in the shell wall of the outer shell 1, the circuit board 6 is located between the retaining ring 7 and the outer shell 1, the retaining ring 7 is used to fix the circuit board 6 on the outer shell 1, and the retaining ring 7 is located between the insulator 3 and the outer shell 1.

[0024] One embodiment of fixing electrode 2 to circuit board 6: electrode 2 is fixed to circuit board 6 by screw 8. Specifically, screw 8 passes through circuit board 6 and is threadedly connected to electrode 2.

[0025] As another embodiment of the present invention: This embodiment also includes a cable 9, which is fixed to the outer shell 1 through the interface 100. The outer shell 1 is provided with a stepped hole. The circuit board 6, the retaining ring 7 and the electrode 2 are all located in the large hole of the stepped hole. The cable 9 passes through the small hole of the stepped hole and connects to the circuit board 6.

[0026] As another embodiment of this utility model: the insulator 3 is filled between the interface 100 and the circuit board 6.

[0027] Specifically, four water channels 11 are evenly distributed on the outer shell 1.

[0028] Specifically, the hydrophobic layer 5 is a rubber tube.

[0029] Specifically, insulator 3 is epoxy resin adhesive.

[0030] In this invention, when there is no water, the outer shell 1 and the electrode 2 are isolated by the insulator 3 and are not conductive. When water enters the first groove 4 from the water channel 11, the water connects the outer shell 1 and the exposed electrode 2, making the electrode 2 and the outer shell 1 conductive, thus enabling the detection of water leakage. By covering the electrode 2 with a hydrophobic layer 5 to prevent water adhesion, water residue on the electrode 2 can be effectively prevented, thereby reducing false alarms from the water immersion sensor. The overall structure is simple, easy to manufacture, and has low production cost.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A condensation-proof water immersion sensor, characterized in that, The device includes a housing, an electrode inside the housing, an insulator between the electrode and the housing, a first groove formed between the insulator, the electrode and the housing, a water passage groove on the wall of the first groove, the water passage groove being disposed on the housing, a hydrophobic layer covering the electrode extending into the insulator, and the top of the electrode protruding from the hydrophobic layer.

2. The anti-condensation water immersion sensor according to claim 1, characterized in that, The bottom of the water trough is flush with the upper surface of the insulator.

3. The anti-condensation water immersion sensor according to claim 2, characterized in that, The housing contains a circuit board, the electrodes are fixed on the circuit board, and the circuit board is located below the insulator.

4. The anti-condensation water immersion sensor according to claim 3, characterized in that, A retaining ring is embedded in the shell wall of the outer casing, and the circuit board is located between the retaining ring and the outer casing. The retaining ring is located between the insulator and the outer casing.

5. The anti-condensation water immersion sensor according to claim 4, characterized in that, The electrodes are fixed to the circuit board with screws.

6. The anti-condensation water immersion sensor according to claim 5, characterized in that, It also includes a cable, which is fixed to the housing via an interface.

7. The anti-condensation water immersion sensor according to claim 6, characterized in that, The insulator extends between the interface and the circuit board.

8. The anti-condensation water immersion sensor according to claim 2, characterized in that, The four water channels are evenly distributed on the outer shell.

9. The anti-condensation water immersion sensor according to claim 7, characterized in that, The hydrophobic layer is a rubber tube.

10. The anti-condensation water immersion sensor according to claim 9, characterized in that, The insulator is epoxy resin adhesive.

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