Built-in waterproof ventilation device and sealed electronic equipment

Abstract

The invention belongs to the technical field of communication security, and particularly relates to a built-in waterproof and breathable device and sealed electronic equipment, and the device is suitable for the sealed electronic equipment with higher waterproof and breathable requirements. The invention provides the built-in waterproof ventilation device with larger ventilation volume and higher reliability for sealed electronic equipment. By means of the built-in waterproof ventilation device, the sealed electronic equipment can adapt to worse environment changes, and the protection capacity of the sealed electronic equipment is effectively improved. The built-in waterproof ventilation device comprises a shell and a condensation guide pipe, the shell is communicated with the interior of the sealed electronic equipment main shell through a gas channel in the shell; a waterproof breathable film is arranged on the gas channel; one end of the condensation conduit is communicated with the gas channel in the housing, and the other end passes through the sealed electronic equipment main housing and is communicated with the outside.

Description

Technical Field

[0001] The present invention belongs to the technical field of communication security, and specifically relates to a built-in waterproof and breathable device and a sealed electronic device. The device is suitable for sealed electronic devices with high requirements for waterproof and breathable properties. Background Art

[0002] The waterproof venting device is a device that provides waterproof and breathable functions for sealed electronic equipment. It provides balanced air pressure for electronic equipment that works outdoors for a long time, reduces condensation, and improves the sealing reliability of sealed electronic equipment. It is an important part of sealed electronic equipment. The waterproof venting device can provide sealed electronic equipment with a waterproof and breathable capability with greater air permeability and higher reliability.

[0003] Existing waterproof breathable valves are usually arranged outside the main shell of a sealed electronic device, such as the waterproof breathable valve disclosed in Chinese Patent Publication No. CN207437870U: the waterproof breathable valve is installed outside the device by opening a hole on the side wall of the device shell, and comprises: a hollow valve body, one end of the valve body is in a closed state, the other end of the valve body is provided with a connecting pipe for installation, the valve body is provided with a gas inlet, the end of the connecting pipe is provided with a gas outlet, and a gas passage is formed between the gas inlet and the gas outlet.

[0004] Existing waterproof and breathable valves are often installed on the outside of the main shell of sealed electronic equipment, which is easily exposed to rain and solar radiation, affecting the overall service life. Even the service life of the gas inlet on the valve body will drop sharply due to harsh working conditions (such as high-pressure car washing, storms, wind, sand and soil invasion), which will bring risks such as air leakage and short circuit of electrical components due to moisture to the inside of the sealed electronic equipment. It is impossible to provide a stable working environment for sealed electronic equipment with an ultra-long service life of 20 years.

[0005] Moreover, the existing waterproof breathable valve is installed in the installation hole of the main shell of the sealed electronic device, and the installation hole needs to be processed in advance on the main shell of the sealed electronic device. After the installation hole is processed, the installation position of the waterproof breathable valve cannot be changed, so the flexibility of the waterproof breathable valve installation is limited, and it cannot meet the installation requirements of sealed electronic devices with different internal structures. Since the existing waterproof breathable valve is between the inner and outer walls of the sealed electronic device, when the temperature exchange between the inside and outside of the device causes breathing, condensation will occur inside the device. The existing technology cannot effectively eliminate the condensation of water vapor caused by the condensation phenomenon, which in turn affects the sealing performance of the device.

[0006] Finally, the air outlet design of the existing waterproof breathable valve is limited by space and usage conditions. It cannot be opened directly at one end of the air outlet channel, but a hole is opened on its side wall. Due to the limited area of ​​the side wall, the size of the air outlet is limited, which in turn affects the efficiency of air pressure exchange inside and outside the device. Summary of the invention

[0007] In view of this, the present invention provides a built-in waterproof and breathable device with greater air permeability and higher reliability for sealed electronic equipment. The built-in waterproof and breathable device can enable the sealed electronic equipment to adapt to more severe environmental changes and effectively improve the protection capability of the sealed electronic equipment.

[0008] The built-in waterproof and breathable device comprises: a shell and a condensation conduit;

[0009] The housing is in communication with the interior of the sealed electronic device main housing through a gas passage inside the housing;

[0010] A waterproof and breathable membrane is provided on the gas passage;

[0011] One end of the condensation conduit is communicated with the gas channel inside the shell, and the other end passes through the sealed electronic equipment main shell and is communicated with the outside.

[0012] Preferably, the condensation duct is fixedly connected to the outer wall of the main housing of the sealed electronic equipment through a flange A;

[0013] The shell is fixedly connected to the inside of the sealed electronic equipment main housing through a flange B.

[0014] Preferably, the waterproof and breathable membrane is a polytetrafluoroethylene membrane.

[0015] Preferably, the condensation conduit is a semi-rigid metal tube.

[0016] Preferably, reinforcing ribs are provided inside the gas passage.

[0017] Preferably, a protective cover having a plurality of through holes is arranged on the outer side of the waterproof and breathable membrane on the gas channel.

[0018] Preferably, a through hole communicating with the condensation duct is provided at the bottom of the shell.

[0019] Preferably, the protective cover is welded to the shell;

[0020] The waterproof and breathable membrane is welded on the inner side of the shell.

[0021] In addition, the present invention also provides a sealed electronic device, which comprises the built-in waterproof and breathable device.

[0022] The main housing of the sealed electronic device is provided with a mounting hole, and the condensation duct passes through the mounting hole and communicates with the outside.

[0023] Beneficial effects:

[0024] (1) The installation position of the built-in waterproof breathable device is different from the traditional method, that is, it is installed inside the sealed electronic equipment and connected to the outside world through a condensation duct to provide balanced air pressure for the sealed electronic equipment and reduce the occurrence of condensation; in addition, the installation position of the device can prevent the entire device and its internal waterproof breathable membrane from being affected by harsh climate such as solar radiation, thereby extending its service life.

[0025] (ii) The gas passage of the device is arranged inside the shell, with one side of the shell being open and the other side being closed, and the gas passage is connected to the inside of the sealed electronic device through the open side; the device can increase the air permeability by selecting a condensation duct with a larger diameter (such as a condensation duct with a diameter of more than 10 mm), thereby improving the efficiency of air pressure exchange between the inside and outside of the device.

[0026] (3) The waterproof and breathable membrane is a polytetrafluoroethylene membrane, which allows gas to pass through to achieve the purpose of high efficiency waterproof and dustproof.

[0027] (iv) The condensation duct of the device is a semi-rigid metal tube, which has certain bendability and shape retention. The semi-rigid metal tube can be used to change the shape and layout of the pipeline, thereby helping to improve the flow properties of the fluid and reduce the occurrence of liquid condensation. Moreover, the flexible characteristics of the semi-rigid metal tube can make the location of the device and the external gas exchange channel more flexible, meeting the installation requirements of different sealed electronic equipment.

[0028] (V) The various components of the device are connected by welding technology to improve the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the appearance of the present invention;

[0030] Figure 2 It is the explosion schematic diagram of the present invention;

[0031] Among them, 1-housing, 2-condensation duct, 3-flange A, 4-protective cover, 5-waterproof breathable membrane, 6-gas channel,

[0032] 7-flange B, 8-reinforcement ribs. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings: It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, and therefore the present invention is not limited to the embodiments described in the specific implementation manners, and any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

[0034] like Figure 1-2A built-in waterproof and breathable device is provided in the main shell of a sealed electronic device, and includes a shell 1 and a condensation duct 2; the shell 1 is open on one side and closed on the other side, and its internal cavity serves as a gas channel 6; the gas channel 6 is the internal space of the shell 1, and is connected to the internal space of the main shell of the sealed electronic device. The closed side of the shell 1 is fixedly connected to the inner wall of the main shell of the sealed electronic device through a flange B7 (or the side of the shell 1 is directly closed by a flange B7 and fixedly connected to the inner wall of the main shell of the sealed electronic device through a flange B7). A waterproof and breathable membrane 5 is provided on the gas channel 6. As an example, the waterproof and breathable membrane 5 is provided on the end face of the side of the opening of the shell 1.

[0035] One end of the condensation duct 2 is connected to the internal cavity of the shell 1 (i.e., the gas channel 6), and the other end passes through the main shell of the sealed electronic device and is connected to the outside, that is, the external gas first enters the gas channel 6 of the shell 1 through the condensation duct 2, and then passes through the waterproof breathable membrane 5, and the air with liquid water and dust filtered out is transported to the inside of the main shell of the sealed electronic device through one side of the opening of the shell 1, so that the internal and external gases are exchanged; the above principle is also applicable to the gas inside the sealed electronic device flowing to the outside and the gas exchange between the gas and the external air.

[0036] As an example, a through hole connected to the condensation duct 2 is provided at the bottom of the shell 1. The through hole connecting the shell 1 and the condensation duct 2 is set at the bottom, which is conducive to the water vapor generated by the condensation phenomenon to flow to the outside of the device along the condensation duct 2 by its own weight.

[0037] As an example, the condensation duct 2 passes through the mounting hole on the main housing of the sealed electronic device and is fixed to the main housing of the device through the flange A3. The purpose of setting the flange A3 and the flange B7 is to increase the stability between the device and the main housing of the sealed electronic device and ensure the stable working state of the device.

[0038] As an example, the diameter of the condensation duct 2 is above 10 mm, which can provide a larger ventilation volume and improve the air pressure exchange efficiency inside and outside the device compared to the prior art.

[0039] The flange B7 is provided with four mounting holes with a diameter of 3.2 mm, so that the device can be mounted on the inner wall of a sealed electronic device. The flange A3 is made of stainless steel.

[0040] Four mounting holes with a diameter of 2.7 mm are provided on the flange A3, so that the condensation duct 2 can be fixedly mounted on the outer side of the sealed electronic equipment.

[0041] As an example, the condensation duct 2 is a semi-rigid metal tube (such as a copper bellows or a stainless steel bellows) with a certain flexibility. The installation direction and angle can be appropriately adjusted according to the internal structure of the sealed electronic equipment and the position of the mounting holes on the main shell, thereby improving the installation flexibility of the device.

[0042] As an example, the cross section of the gas channel 6 is circular, with reinforcing ribs 8 inside. A protective cover 4 with a plurality of through holes is connected to the outer side of the waterproof and breathable membrane 5 on the opening side of the shell 1 to protect the fragile waterproof and breathable membrane 5.

[0043] As an example, the waterproof breathable membrane 5 is a polytetrafluoroethylene membrane.

[0044] As an example, a cross reinforcement rib is arranged inside the gas channel 6, and a cross frame is arranged at the center of the corresponding protection cover 4 to form a through hole.

[0045] The waterproof breathable membrane 5 is between the protective cover 4 and the outer shell 1 . The protective cover 4 and the outer shell 1 are welded, and the waterproof breathable membrane 5 and the inner side of the outer shell 1 are also welded, which has good sealing and waterproof and dustproof performance.

[0046] The protective cover 4 and the housing 1 are machined using stainless steel materials and have good protection capabilities and structural strength. The protective cover 4 is provided with a plurality of through holes, which, combined with the technical feature that the diameter of the condensation duct 2 is above 10 mm, can achieve the purpose of increasing the air permeability of the device and efficiently balancing the air pressure inside and outside the device (and inside and outside the sealed electronic equipment).

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A built-in waterproof breathable device, characterized in that: It is arranged in a main housing of a sealed electronic device and comprises a housing (1) and a condensation duct (2); The housing (1) is in communication with the interior of the sealed electronic device main housing through a gas passage (6) therein; A waterproof and breathable membrane (5) is provided on the gas passage (6); One end of the condensation duct (2) is connected to the gas channel (6) inside the housing (1), and the other end passes through the main housing of the sealed electronic device and is connected to the outside.

2. A built-in waterproof breathable device according to claim 1, characterized in that: The condensation duct (2) is fixedly connected to the outer wall of the main housing of the sealed electronic equipment via a flange A (3); The housing (1) is fixedly connected to the inside of the main housing of the sealed electronic equipment via a flange B (7).

3. A built-in waterproof breathable device according to claim 1, characterized in that: The waterproof and breathable membrane (5) is a polytetrafluoroethylene membrane.

4. A built-in waterproof breathable device according to any one of claims 1 to 3, characterized in that: The condensation conduit (2) is a semi-rigid metal tube.

5. A built-in waterproof breathable device according to any one of claims 1 to 3, characterized in that: A reinforcing rib (8) is provided inside the gas channel (6).

6. A built-in waterproof breathable device according to any one of claims 1 to 3, characterized in that: A protective cover (4) having a plurality of through holes is arranged on the outer side of the waterproof and breathable membrane (5) on the gas channel (6).

7. A built-in waterproof breathable device according to any one of claims 1 to 3, characterized in that: A through hole communicating with the condensation duct (2) is provided at the bottom of the shell (1).

8. A built-in waterproof breathable device according to claim 6, characterized in that: The protective cover (4) is welded to the outer shell (1); The waterproof and breathable membrane (5) is welded to the inner side of the outer shell (1).

9. A sealed electronic device, characterized in that: It comprises the built-in waterproof and breathable device as described in any one of claims 1 to 8; a mounting hole is provided on the main shell of the sealed electronic device, and the condensation duct (2) passes through the mounting hole and is connected to the outside.

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