A device and method for preventing water ingress into equipment

Abstract

The application discloses a device and method for preventing water from entering equipment, which comprises a first hole and a second hole arranged on an equipment shell, the first hole is located at the upper part of the side of the equipment shell and is inclined downward from inside to outside, and the second hole is located on the bottom surface of the equipment shell; the first hole and the second hole form an air flow channel with the internal cavity of the equipment shell; the device can prevent water from entering the equipment through a simple and reasonable structure, reduces the grade requirement of various connectors, avoids the failure caused by the aging of common sealant, improves the waterproof effect, and prolongs the effective time limit of the waterproof structure.

Description

Technical Field

[0001] This application relates to the field of equipment waterproofing technology, and in particular to a device and method for preventing water from entering equipment. Background Technology

[0002] Currently, many devices require protection against water ingress. my country has established eight waterproof protection levels, ranging from IP60 to IP68. These nine levels are briefly described as follows: Level 0: No protection; Level 1: Eliminates the harmful effects of vertically falling water droplets; Level 2: Provides protection against water droplets falling at an angle of up to 15 degrees to the vertical; Level 3: Eliminates the harmful effects of spray-like water droplets at an angle of 60 degrees to the vertical; Level 4: Eliminates the harmful effects of splashing water droplets from different directions; Level 5: Eliminates the harmful effects of water jets from nozzles in all directions; Level 6: Eliminates the harmful effects of powerful water jets from nozzles in all directions; Level 7: With the top of the device 0.15-1 meter above the water surface, performance is unaffected and there is no leakage for 30 minutes; Level 8: With the top of the device 1.5-30 meters above the water surface, performance is unaffected and there is no leakage for 30 minutes. It is evident that a relatively sealed environment is required starting from Level 4. For Levels 7 and 8, external water pressure must be considered, making water ingress prevention even more challenging.

[0003] Many existing devices rely on complete sealing for waterproofing. While this is sufficient for devices that can be sealed and withstand pressure, sealing is difficult for many devices. For example, circuit boards and other components need to be sealed, but power cables, signal input / output lines, and sensor input ports cannot be sealed within these components. This necessitates sealing connectors and even cables, which presents challenges. Common waterproofing issues in existing technologies include: for instance, a cable 201 connected to a sealed space via sealant 202. After several months, cracks may appear at the sealant 202-cable joint. If the device is submerged one meter underwater, the significant pressure difference between the inside and outside of the device allows water to slowly seep in. Similarly, a multi-core cable 101 may have gaps 102 where the multiple strands within the sheath do not completely fill the space. Under pressure, water can also penetrate this type of cable. Summary of the Invention

[0004] This application proposes a device and method for preventing water ingress into equipment, thereby addressing the water ingress problem by improving the pressure conditions of the waterproof structure.

[0005] This application provides a device for preventing water from entering equipment, including a first hole and a second hole disposed on the equipment housing. The first hole is located on the upper part of the side of the equipment housing and is inclined downward from the inside to the outside. The second hole is located on the bottom surface of the equipment housing. The first hole and the second hole form an airflow channel with the internal cavity of the equipment housing.

[0006] To meet the requirements of high protection level, the first hole, or the second hole, or the first hole and the second hole are filled with a layer of hydrophobic and breathable material.

[0007] This application also provides a method for preventing water ingress into equipment, including the following steps:

[0008] A first hole is made on the upper part of the side of the device housing, and the first hole is made into a structure that slopes downward from the inside to the outside;

[0009] A second hole is made on the bottom surface of the device housing, so that the first hole and the second hole form an airflow channel with the internal cavity of the device housing.

[0010] To meet the requirements of high protection levels, a layer of hydrophobic and breathable material is inserted into the first hole, or the second hole, or both the first hole and the second hole.

[0011] The device and method for preventing water ingress into equipment according to this application can achieve the following beneficial effects:

[0012] The device for preventing water ingress into equipment disclosed in this application creates two holes in the equipment housing, forming an airflow channel with the internal cavity of the housing. Due to the surface tension of the water at the holes and the reduction of humidity inside the housing caused by the double-hole structure, water ingress can be prevented through a simple and reasonable structure, reducing the grade requirements of various connectors. The method for preventing water ingress, by implementing the operational steps of the above-mentioned device structure, achieves the beneficial effects of the device while avoiding common sealant aging-induced failure, thus improving waterproofing and extending the effective lifespan of the waterproof structure. Attached Figure Description

[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0014] Figure 1 This is a schematic diagram of a multi-core cable in the prior art.

[0015] Figure 2 This is a schematic diagram of a cable connected to a sealed space using existing technology via sealant.

[0016] Figure 3 This is a schematic diagram of the device for preventing water from entering the equipment according to this application.

[0017] Figure 4 This is a schematic diagram illustrating the pressure resistance principle of the drainage hole in the device for preventing water ingress into the equipment according to this application.

[0018] In the diagram, 1 represents the equipment housing, 2 represents the first hole, and 3 represents the second hole; 101 represents the cable core wire, 102 represents the gap, 201 represents the cable, and 202 represents the sealant. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The technical solutions provided by the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0021] Example 1

[0022] A device for preventing water from entering equipment, see [link to documentation]. Figure 3 It includes a first hole 2 and a second hole 3 disposed on the device housing 1. The first hole 2 is located on the upper part of the side of the device housing 1 and is inclined downward from the inside to the outside. The second hole 3 is located on the bottom surface of the device housing 1. The first hole 2 and the second hole 3 form an airflow channel with the internal cavity of the device housing 1.

[0023] The waterproofing principle of the device for preventing water ingress in this embodiment is as follows: Figure 4 As shown, the inner wall of the container is made of hydrophobic material, and there is a small hole at the bottom of the container. When water is filled into the container, the water at the small hole will form a downward convex shape. At this time, due to the surface tension of the water, the water in the downward convex part will be subjected to an upward pulling force. The pulling force divided by the cross-sectional area of ​​the small hole is the pressure at this point. Figure 4The middle arrow indicates the direction of tension. That is, the surface tension of water is constant. The smaller the cross-sectional area of ​​the small hole, the greater the pressure that the tension can generate, meaning it can withstand greater internal water pressure. The two small holes in this embodiment are designed to prevent water vapor buildup inside the device. Since water can dissolve in air, the amount of water vapor can be measured using relative humidity. If we only consider the single vent at the bottom of the device, and the device is used outdoors, assuming high daytime temperatures and rain, with a relative humidity of 100%, the humidity inside the device will also be 100% due to the vent. At night, as the temperature drops, the water vapor inside the device will condense into water droplets due to supersaturation. If this vent at the bottom of the device is blocked with a hydrophobic material, water cannot flow out. Assuming the following days are sunny and the external relative humidity drops to 50%, when the daytime temperature rises, the water droplets inside the device will revert to water vapor. However, because the molecular weight of water is 18, oxygen is 32, and nitrogen is 28, and there is no wind inside the device and the temperature is not very high, this water vapor will accumulate in the upper space inside the device, making it impossible for it to escape. In this embodiment, two holes are provided, allowing moisture to easily escape through the smaller hole on top, thus quickly expelling internal moisture and keeping the interior dry.

[0024] The dual-hole design of this embodiment also has another advantage: even with 100% ambient humidity, the internal humidity can still be relatively low. This is because there is no airflow inside the device, and as water vapor rises, the molecules inside and outside exchange at the upper small hole. The molecules flowing out from the inside are mostly water molecules, while the molecules flowing in from the outside are a mixture of oxygen, nitrogen, and water vapor. This makes the inside relatively dry, which is very important for protecting the device.

[0025] The waterproofing method of the device for preventing water ingress into the equipment according to this embodiment includes the following steps:

[0026] A first hole 2 is made on the upper part of the side of the device housing 1, and the first hole 2 is made into a structure that slopes downward from the inside to the outside;

[0027] A second hole 3 is made on the bottom surface of the device housing 1, so that the first hole 2 and the second hole 3 form an airflow channel with the internal cavity of the device housing 1.

[0028] It should be noted that for waterproofing below IP56 level, as long as the opening size is small enough and the wall of the equipment is thick enough, the waterproofing requirements can be met. Preferably, the angle between the first hole 2 and the horizontal plane is greater than or equal to 10°, which will better meet the waterproofing requirements.

[0029] At this point, the waterproofing method of the device for preventing water from entering the equipment in this embodiment includes the following steps: setting the angle between the first hole 2 and the horizontal plane to be greater than or equal to 10°, so as to better meet the waterproofing requirements.

[0030] Example 2

[0031] The device for preventing water ingress into the equipment described in Example 1 can be further further comprising a layer of hydrophobic and breathable material filling the first hole 2 and / or the second hole 3. That is, the first hole 2, or the second hole 3, or both the first hole 2 and the second hole 3 are filled with a layer of hydrophobic and breathable material.

[0032] The hydrophobic and breathable material is made, for example, by spraying hydrophobic nanomaterials onto nonwoven fabric, or by using a breathable sponge soaked in hydrophobic nanomaterials. The hydrophobic nanomaterials may be, for example, commercial products such as Neverwet or similar materials.

[0033] It should be noted that for IP67 and IP68, as described in this embodiment, some hydrophobic and breathable material needs to be inserted into the first hole 2 and / or the second hole 3.

[0034] That is, some hydrophobic and breathable material is stuffed into the first hole 2, or some hydrophobic and breathable material is stuffed into the second hole 3, or some hydrophobic and breathable material is stuffed into both the first hole 2 and the second hole 3.

[0035] At this point, the waterproofing method of the device for preventing water from entering the equipment in this embodiment includes the following steps: stuffing some hydrophobic and breathable material into the first hole 2 and / or the second hole 3.

[0036] The first hole 2 is filled with some hydrophobic and breathable material, or the second hole 3 is filled with some hydrophobic and breathable material, or the first hole 2 and the second hole 3 are filled with some hydrophobic and breathable material.

[0037] Furthermore, the hydrophobic and breathable material layer can be rolled up and inserted into the first hole 2 and / or the second hole 3.

[0038] That is, the hydrophobic and breathable material layer is rolled up and inserted into the first hole 2, or the second hole 3, or both the first hole 2 and the second hole 3. For example, a non-woven fabric can be sprayed with hydrophobic nanomaterials and then rolled up. This material can meet IP67 standards; thus, it is easy to achieve an IP67 waterproof effect. Moreover, the longer the roll, the greater the resistance of the hydrophobic and breathable material layer to water, and the better the waterproof sealing effect.

[0039] At this point, the waterproofing method of the device for preventing water from entering the equipment in this embodiment includes the following steps: rolling the hydrophobic and breathable material layer into a roll and inserting it into the first hole 2 and / or the second hole 3.

[0040] The hydrophobic and breathable material layer is rolled up and inserted into the first hole 2, or the second hole 3, or both the first hole 2 and the second hole 3.

[0041] Example 3

[0042] The device for preventing water ingress described in Embodiment 1 or Embodiment 2 can be further provided that the second hole 3 is located between the middle and the edge of the bottom surface of the device housing 1. That is, the second hole 3 is not located in the middle of the bottom surface.

[0043] In this embodiment, the waterproofing method for preventing water ingress into the equipment includes the following steps: The second hole 3 is formed at a position between the middle and the edge of the bottom surface of the equipment housing 1. This improves the airflow within the equipment, promotes internal drying, and helps protect the equipment.

[0044] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A device for preventing water ingress into equipment, comprising a first hole and a second hole disposed on the equipment housing, characterized in that, The inner wall of the container is made of hydrophobic material. The first hole is located on the upper part of the side of the device housing and slopes downward from the inside to the outside. The angle between the first hole and the horizontal plane is greater than or equal to 10°. The second hole is located on the bottom surface of the device housing. The first hole and the second hole form an airflow channel with the internal cavity of the device housing. The first hole and / or the second hole are filled with a layer of hydrophobic and breathable material. The hydrophobic and breathable material is made of non-woven fabric sprayed with hydrophobic nanomaterials or made of breathable sponge soaked in hydrophobic nanomaterials.

2. The device for preventing water ingress into equipment as described in claim 1, characterized in that, The hydrophobic and breathable material layer is rolled up and inserted into the first hole and / or the second hole.

3. The device for preventing water ingress into equipment as described in claim 1, characterized in that, The second hole is located between the middle and the edge of the bottom surface of the device housing.

4. A waterproofing method for a device for preventing water ingress into equipment as described in any one of claims 1-3, characterized in that, Includes the following steps, A first hole is made on the upper part of the side of the device housing, and the first hole is made into a structure that slopes downward from the inside to the outside; A second hole is made on the bottom surface of the device housing, so that the first hole and the second hole form an airflow channel with the internal cavity of the device housing.

5. The waterproofing method of the device for preventing water ingress into equipment as described in claim 4, characterized in that, A layer of hydrophobic and breathable material is inserted into the first hole and / or the second hole.

6. The waterproofing method of the device for preventing water ingress into equipment as described in claim 5, characterized in that, The hydrophobic and breathable material layer is rolled into a roll and inserted into the first hole and / or the second hole.

7. The waterproofing method of the device for preventing water ingress into equipment as described in claim 4, characterized in that, The second hole is made at a position between the middle and the edge of the bottom surface of the device housing.

8. The waterproofing method of the device for preventing water ingress into equipment as described in claim 4, characterized in that, Set the angle between the first hole and the horizontal plane to be greater than or equal to 10°.

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