CN117388429A

CN117388429A - Gas sensing equipment and waterproof device thereof

Info

Publication number: CN117388429A
Application number: CN202210787286.7A
Authority: CN
Inventors: 王琦琪; 李健
Original assignee: Ningbo Sunny Infrared Technologies Co Ltd
Current assignee: Ningbo Sunny Infrared Technologies Co Ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2024-01-12

Abstract

The invention provides a gas sensing device, which comprises a gas sensor and a waterproof device, wherein when the waterproof device is in a first working position, the waterproof device forms a first gas channel and a second gas channel, the first gas channel is respectively communicated with the gas inlet of the gas sensor and the external environment, and the second gas channel is respectively communicated with the gas outlet of the gas sensor and the external environment; when the waterproof device is in a second working position, the communication between the air inlet and the air outlet of the gas sensor and the external environment is blocked, so that the gas sensor can be sealed in the waterproof device in time when the gas sensing device is submerged by water, and the gas detection or induction function of the gas sensor of the gas sensing device is prevented from being influenced by water inflow.

Description

Gas sensing equipment and waterproof device thereof

Technical Field

The invention relates to the technical field of gas detection, in particular to gas sensing equipment for detecting gas. Further, the invention also relates to a waterproof device for the gas detection equipment.

Background

In many working occasions, people need to detect the ambient gas to prevent accidents and ensure the working safety. For example, there is a need to continuously monitor methane concentration in mine roadways, mining face, goaf, return roadways, electromechanical chambers, downhole, etc. to prevent working environment methane from exceeding standard, resulting in worker and even inducing explosion accidents. The methane detector can send out alarm signals such as sound, words, light and shadow when the methane concentration exceeds the normal concentration range so as to remind operators to take measures in time, prevent explosion and poisoning accidents and ensure life and property safety. In addition, the gas detector can be further connected with a remote monitoring and signal system and even connected to a network, so that people far away from an operation area can timely react and take measures. However, in mine working environments such as coal mines, other safety hazards may occur in addition to harmful gases, such as methane, exceeding the standard. For example, water penetration occurs, resulting in flooding of the methane sensor. After the existing part of the type methane sensors in the market are submerged, conditions such as reduced induction sensitivity, even complete damage and the like occur, normal use is affected, and risks are brought to operators.

The utility model patent with the application number of CN201720651009.8 discloses a waterproof methane sensor, which comprises a shell and a circuit board assembly positioned in the shell, wherein a waterproof board capable of absorbing water and a protective cover covered on the circuit board are arranged on the outer side of an upper cover of the shell. The waterproof methane sensor provided by the utility model can prevent water mist and the like in air from entering the sensor. However, it is apparent that the waterproof methane sensor provided by the utility model cannot prevent water from entering the inside of the sensor when flooded. In addition, the water flow in many working occasions often carries many impurities, such as dust, silt, oil stains and the like, and after entering the sensor along with the water flow, the water flow deposits and/or adheres to the sensing part of the sensor, so that the sensing function of the sensor cannot be recovered even after the water flow is removed.

The utility model patent with the application number of CN201410832560.3 discloses a sensor waterproof cover which can cover a sensor probe so as to prevent the sensor probe from being damaged due to water inflow of the probe caused by underground water spraying and dust flushing. However, the sensor waterproof cover provided by the patent of the utility model cannot prevent water from entering the sensor and impurities carried by water flow from affecting the sensing function of the sensor when the sensor waterproof cover is flooded.

Disclosure of Invention

The main advantage of the present invention is to provide a gas sensing apparatus, wherein the waterproof device can automatically seal the gas sensor of the gas sensing apparatus inside the waterproof device in a watertight manner before the gas sensing apparatus is submerged in water, so as to prevent the gas sensor from losing the gas detection function due to contact with water.

Another advantage of the present invention is to provide a gas sensing apparatus, the waterproof device of which can be automatically opened after water is withdrawn, so that the gas sensor of the gas sensing apparatus can contact with the external ambient gas and recover the gas detection function.

Another advantage of the present invention is to provide a gas sensing apparatus whose waterproof means is a mechanical structure that does not require any electrical energy for water sealing of the gas sensor of the gas sensing apparatus.

Another advantage of the present invention is to provide a gas sensing apparatus in which the gas sensor is arranged and can be sealed inside the waterproof device to avoid that impurities carried by the water flow affect the gas sensing function of the gas sensor when the gas sensing apparatus is submerged.

Another advantage of the present invention is to provide a gas sensing apparatus that is capable of automatically sealing a gas sensor of the gas sensing apparatus within the waterproof device when subjected to an appropriate external force, such as a buoyancy force, and automatically opening the waterproof device of the gas sensing apparatus under the action of gravity when the external force is removed, so that the gas sensor of the gas sensing apparatus can be gas-contacted with the external environment and resume its gas sensing function

Other advantages and features of the present invention will become apparent from the following detailed description.

Accordingly, according to the present invention, the gas sensing apparatus of the present invention having the above-described advantages includes:

a gas sensor; and

a waterproof device, wherein the gas sensor has at least one first opening, at least one second opening and at least one gas detection channel, wherein the gas detection channel of the gas sensor is in communication with the first opening and the second opening, respectively, and the sensing portion of the gas sensor is exposed to the gas detection channel, wherein the waterproof device forms at least one first gas channel and at least one second gas channel, wherein the first gas channel is in communication with the first opening of the gas sensor, and the second gas channel is in communication with the second opening of the gas sensor, wherein when the waterproof device is in a first operating position, the first gas channel is in communication with the first opening of the gas sensor and the ambient, respectively, and the second gas channel is in communication with the second opening of the gas sensor and the ambient, respectively; when the waterproof device is in a second working position, the communication between the first gas channel and the second gas channel and the external environment is blocked, so that the communication between the first opening and the second opening of the gas sensor and the external environment is blocked.

According to another aspect of the present invention, there is further provided a waterproof apparatus for a gas sensing device, comprising:

a first body;

a second body;

a first control assembly; and

a second control assembly, wherein the first body, the second body, the first control assembly and the second control assembly are arranged from top to bottom along the vertical direction, wherein the first control assembly is arranged below the first body, the second control assembly is arranged below the second body, and the first control assembly can move towards the direction close to the first body to press against the first body along the vertical direction and move away from the first body to form a first space between the first body and the first control assembly; the second control component is arranged to move along the vertical direction to the direction close to the second main body and to move away from the second main body so as to form a second space between the second main body and the second control component, wherein the first space is arranged to be communicated with a first gas channel of the first main body and the external environment respectively, the second space is arranged to be communicated with a second gas channel of the second main body and the external environment respectively, and when the waterproof device is in a first working position, the first control component is away from the first main body so as to form the first space, and the second control component is away from the second main body so as to form the second space; when the waterproof device is positioned at a second working position, the first control component is propped against the first main body, and the second control component is propped against the second main body.

The foregoing and other advantages of the invention will become more fully apparent from the following description and appended drawings.

The above and other advantages and features of the present invention are readily apparent from the following detailed description of the invention and the accompanying drawings.

Drawings

Fig. 1A is a perspective view of a gas sensing apparatus according to an embodiment of the present invention, wherein the waterproof device of the gas sensing apparatus of the present invention is in its first working position.

Fig. 1B is a cross-sectional view of a gas sensing apparatus according to an embodiment of the present invention, wherein the waterproof device of the gas sensing apparatus of the present invention is in its first working position.

Fig. 2 is an assembly view of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 3 is a perspective view of the first body of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 4 is another perspective view of the first body of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 5A is another perspective view of the first body of the gas sensing apparatus according to the embodiment of the present invention, in which the first control unit of the gas sensing apparatus is disposed in the first control chamber of the first body.

Fig. 5B is a cross-sectional view of the first body of the gas sensing apparatus according to the embodiment of the present invention described above, in which the first control assembly of the gas sensing apparatus of the present invention is disposed in the first control chamber of the first body.

Fig. 6 is an enlarged view of the first control assembly of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 7 is another enlarged view of the first control assembly of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 8 is a perspective view of the second body of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 9 is another perspective view of the second body of the gas sensing apparatus according to the embodiment of the present invention, in which the second control unit of the gas sensing apparatus of the present invention is provided in the second control chamber of the second body.

Fig. 10A is another perspective view of the second body of the gas sensing apparatus according to the embodiment of the present invention, in which the second control unit of the gas sensing apparatus of the present invention is disposed in the second control chamber of the second body.

Fig. 10B is a cross-sectional view of the second body of the gas sensing apparatus according to the embodiment of the present invention described above, in which the second control assembly of the gas sensing apparatus of the present invention is disposed in the second control chamber of the second body.

Fig. 11 is an enlarged view of the second control assembly of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 12 is another enlarged view of the second control assembly of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 13 is a perspective view of the first floating body of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 14 is a perspective view of the second floating body of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 15 is a perspective view of the gas sensor of the gas sensing apparatus according to the embodiment of the present invention described above.

Fig. 16 is another perspective view of the gas sensor of the gas sensing apparatus according to the embodiment of the invention described above.

Fig. 17 is a perspective view of the gas sensing apparatus according to the embodiment of the present invention described above, wherein the waterproof device of the gas sensing apparatus of the present invention is in its second working position.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to practice the invention. Other obvious substitutions, modifications and changes will occur to one of ordinary skill in the art. Thus, the scope of the invention should not be limited by the exemplary embodiments described herein.

It will be understood by those of ordinary skill in the art that the terms "a" or "an" should be understood as "at least one" or "one or more" unless specifically indicated herein, i.e., in one embodiment, the number of elements may be one, and in other embodiments, the number of elements may be multiple.

It will be appreciated by those of ordinary skill in the art that unless specifically indicated herein, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., refer to an orientation or position based on that shown in the drawings, merely for convenience of description of the present invention, and do not denote or imply that the devices or elements involved must have a particular orientation or position. Accordingly, the above terms should not be construed as limiting the present invention.

Referring to fig. 1A to 17 of the drawings of the specification, a gas sensing apparatus according to an embodiment of the present invention comprises a gas sensor 10 and a waterproof device 20, wherein the gas sensor 10 has at least one first opening 101, at least one second opening 102 and at least one gas detection channel 103, and a sensing portion 111 of the gas sensor 10 is exposed to the gas detection channel 103, wherein the gas detection channel 103 of the gas sensor 10 is in communication with the first opening 101 and the second opening 102, respectively, wherein the waterproof device 20 forms at least one first gas channel 201 and at least one second gas channel 202, wherein the first gas channel 201 is in communication with the first opening 101 of the gas sensor 10, the second gas channel 202 is in communication with the second opening 102 of the gas sensor 10, wherein the first gas channel 201 is in communication with the first opening 101 of the gas sensor 10 and the external environment, respectively, and the second gas channel 202 is in communication with the second opening 102 of the gas sensor 10, respectively, when the waterproof device 20 is in a first operating position; when the waterproof device 20 is in a second working position, the communication between the first gas channel 201 and the second gas channel 202 and the external environment is blocked, so that the communication between the first opening 101 and the second opening 102 of the gas sensor 10 and the external environment is blocked. Accordingly, when the waterproof device 20 is in the first working position, the first gas channel 201 and the second gas channel 202 of the waterproof device 20 allow the external ambient gas to flow into and/or out of the gas sensor 10, so that the sensing portion 111 of the gas sensor 10 can sense the component (concentration) in the ambient gas (air). At this time, the gas sensing apparatus of the present invention is in a gas detection (or sensing) operation state. Illustratively, when the gas sensor 10 is a methane sensor, the gas sensor 10 is configured to sense the methane concentration in ambient air so that an alarm can signal an alarm when the methane concentration is too high. Further, when the waterproof device 20 is in the second working position, the communication between the first opening 101 and the second opening 102 of the gas sensor 10 and the external environment is blocked, thereby preventing water (flow) from entering the gas sensor 10 through the first opening 101 and/or the second opening 102 and affecting the sensing function of the gas sensor 10, even causing damage to the gas sensor 10. At this time, the gas sensor apparatus of the present invention is in a water-protected state to protect the gas sensor 10 from water. It will be appreciated that the gas detection channel 103 of the gas sensor 10 is in communication with the first opening 101 and the second opening 102, respectively, and that the sensing portion 111 of the gas sensor 10 is exposed to the gas detection channel 103, such that the ambient gas (e.g., air) flowing from the first opening 101, the gas detection channel 103, to the second opening 102, or flowing from the second opening 102, the gas detection channel 103, or diffusing to the first opening 101, can be detected or sensed by the sensing portion 111 of the sensing end 11 of the gas sensor 10, such that the component (concentration) to be detected (e.g., the concentration of methane in the ambient gas (air) can be detected or sensed by the sensing portion 111 of the sensing end 11 of the gas sensor 10. As will be appreciated by those skilled in the art, the communication between the first opening 101 and the second opening 102 of the gas sensor 10 and the external environment is blocked herein, which means that water (flow) of the external environment cannot enter the inside of the gas sensor 10 through the first opening 101 and/or the second opening 102.

As shown in fig. 1A, 1B, 15 and 16 of the drawings, it is preferable that the first opening 101 and the second opening 102 of the gas sensor 10 of the gas sensing apparatus according to the embodiment of the present invention are respectively provided at both ends of the gas sensor 10. Preferably, the gas sensor 10 of the gas sensing device of the present invention forms a sensing end 11 and an elongated end 12. Illustratively, the first opening 101 is disposed at the sensing end 11 of the gas sensor 10 and the second opening 102 is disposed at the elongated end 12 of the gas sensor 10. In other embodiments, the second opening 102 is provided at the sensing end 11 of the gas sensor 10 and the first opening 101 is provided at the elongated end 12 of the gas sensor 10. It is understood that the sensing portion 111 of the gas sensor 10 is disposed at the sensing end 11.

As shown in fig. 1A to fig. 2, fig. 5B, fig. 17 of the drawings, the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention comprises a first main body 21, a second main body 22, a first control member 23 and a second control member 24, wherein the first main body 21, the second main body 22, the first control member 23 and the second control member 24 are disposed vertically from top to bottom, wherein the gas sensor 10 is disposed between the first main body 21 and the second main body 22, the first control member 23 is disposed below the first main body 21, the second control member 24 is disposed below the second main body 22, wherein the first control member 23 is disposed to be movable in a direction close to the first main body 21 in a vertical direction to press against the first main body 21 to block communication of the first gas passage 201 with the external environment, thereby blocking communication of the first opening 101 of the gas sensor 10 with the external environment, and to be movable in a direction away from the first main body 21 to form a first space 210 between the first control member 21 and the first control member 23; the second control assembly 24 is configured to move in a vertical direction toward the second body 22 to be pressed against the second body 22 to block the communication between the second gas passage 202 and the external environment, thereby blocking the communication between the second opening 102 of the gas sensor 10 and the external environment, and to move in a direction away from the second body 22 to form a second space 220 between the second body 22 and the second control assembly 24, wherein the first space 210 is configured to be respectively communicated with the first gas passage 201 and the external environment, the second space 220 is configured to be respectively communicated with the second gas passage 202 and the external environment, and the first control assembly 23 moves in a vertical direction away from the first body 21 to form the first space 210 between the first body 21 and the first control assembly 23 when the waterproof device 20 is in the first operating position; the second control member 24 moves away from the second main body 22 in the vertical direction to form the second space 220 between the second main body 22 and the second control member 24, wherein when the waterproof device 20 is in the second working position, the first control member 23 moves in the vertical direction to press against the first main body 21, the first control member 23 and the first main body 21 no longer form the first space 210, thereby blocking the communication between the first opening 101 of the gas sensor 10 and the external environment, the second control member 24 moves in the vertical direction to press against the second main body 22, and the second control member 24 and the second main body 22 no longer form the second space 220, thereby blocking the communication between the second opening 102 of the gas sensor 10 and the external environment.

As shown in fig. 1A to 2, 5B, 17 of the drawings, the first body 21 of the watertight device 20 of the gas sensing apparatus according to the embodiment of the present invention forms the first gas channel 201, the second body 22 forms the second gas channel 202, wherein each of the first gas channels 201 has a first communication opening 2011 and a second communication opening 2012, each of the second gas channels 202 has a first communication opening 2021 and a second communication opening 2022, wherein the first communication opening 2011 is arranged opposite the first control member 23, the second communication opening 2012 is arranged adapted to communicate with the first opening 101 of the gas sensor 10, the first communication opening 2021 of the second gas channel 202 is arranged opposite the second control member 24, the second communication opening 2022 is arranged adapted to communicate with the second opening 102 of the gas sensor 10, such that the first communication opening 201 can communicate with the external environment through the first communication opening 2011 of the first gas channel 201 when the first control member 23 is distant from the first body 21; and the second control assembly 24 is far from the second body 22, the first through opening 2021 of the second gas channel 202 can communicate with the external environment through the second space 220, so that the external environment gas (e.g., air) flows from the second space 220 to the second opening 102 of the gas sensor 10 through the first through opening 2021 of the second gas channel 202, and then flows or diffuses through the gas detection channel 103 to the first opening 101, so as to be detected or sensed by the sensing portion 111 of the sensing end 11 of the gas sensor 10; or an external ambient gas (e.g., air) is flowed or diffused from the first space 210 to the first opening 101 of the gas sensor 10 through the first communication opening 2011 of the first gas passage 201 and the first gas passage 201, and then flowed or diffused to the second opening 102 through the gas detection passage 103, so as to be detected or sensed by the sensing portion 111 of the sensing end 11 of the gas sensor 10. As will be appreciated by those skilled in the art, when the gas sensing apparatus of the present invention is vertically disposed with the first control member 23 away from the first body 21 and the second control member 24 away from the second body 22, as shown in fig. 17 of the drawings, if the density of the gas to be measured (e.g., chlorine) is greater than the air density, the gas is more likely to flow or diffuse from the first space 210, the first gas channel 201, the first opening 101 of the gas sensor 10, the gas detection channel 103 to the second opening 102 of the gas sensor 10; if the density of the gas to be measured (e.g., methane) is less than the air density, then gas is more likely to flow or diffuse from the second space 220, the second gas channel 202, the second opening 102 of the gas sensor 10, the gas detection channel 103 toward the first opening 101 of the gas sensor 10.

As shown in fig. 1A to 2, 5B and 17 of the drawings, further, when the first control member 23 moves in the vertical direction (upward) to press against the first body 21, it is capable of sealing the first communication opening 2011 of the first gas channel 201 and blocking communication of the first communication opening 2011 of the first gas channel 201 with the external environment, thereby blocking communication of the first opening 101 of the gas sensor 10 with the external environment; and when the second control member 24 moves in the vertical direction to press against the second body 22, the first through opening 2021 of the second gas passage 202 can be sealed and communication of the first through opening 2021 of the second gas passage 202 with the external environment is blocked, thereby blocking communication of the second opening 102 of the gas sensor 10 with the external environment. Further, the first opening 101 of the gas sensor 10 is in water-tight communication with the second communication opening 2012 of the first gas channel 201, the second opening 102 of the gas sensor 10 is in water-tight communication with the second communication opening 2022 of the second gas channel 202, such that when the first communication opening 2011 of the first gas channel 201 is sealed by the first control assembly 23, the first communication opening 2021 of the second gas channel 202 is sealed by the second control assembly 24, external water flow cannot enter the interior of the gas sensor 10 and affect the gas detection or sensing function of the gas sensor 10. Accordingly, when the first control assembly 23 is away from the first body 21, the first space 210 is formed to be respectively communicated with the first communication opening 2011 of the first gas channel 201 and the external environment; the waterproof device 20 is located at the first working position when the second control assembly 24 is far away from the second main body 22, thereby forming the second space 220 respectively communicating with the first conducting opening 2021 of the second gas channel 202 and the external environment. Further, when the second control component 24 is pressed against the second body 22, the first through opening 2021 of the second gas channel 202 is sealed and the communication between the first through opening 2021 of the second gas channel 202 and the external environment is blocked; the first control component 23 is pressed against the first main body 23, and when sealing the first communication opening 2011 of the first gas channel 201 and blocking the communication between the first communication opening 2011 of the first gas channel 201 and the external environment, the waterproof device 20 is located at the second working position.

It should be noted that the density of the first control component 23 and the second control component 24 is set smaller than that of water, so that when the gas sensing device of the present invention is vertically placed from top to bottom (as shown in fig. 1A to 2, 5B and 17 of the drawings), and the first control component 23 and the second control component 24 are submerged by water, the first control component 23 and the second control component 24 can respectively move upwards in the vertical direction under the buoyancy of water to respectively press against the first main body 21 and the second main body 22, so that the first communication opening 2011 of the first gas channel 201 and the first communication opening 2021 of the second gas channel 202 are respectively sealed, and water is prevented from flowing from the first communication opening 2021 of the second gas channel 202 and the second opening 102 of the gas sensor 10; and/or the first communication opening 2011 of the first gas channel 201, the first opening 101 of the gas sensor 10 flows into the interior of the gas sensor 10 and affects the gas detection or sensing function of the gas sensor 10. Accordingly, at this time, the waterproof device 20 of the gas sensor apparatus of the present invention is located at the second working position. It will be appreciated by those skilled in the art that the naming of the communication openings (the first communication opening 2011 and the second communication opening 2012) of the first gas channel 201 and the communication openings (the first communication opening 2021 and the second communication opening 2022) of the waterproof device 20 of the gas sensing apparatus of the present invention is merely for distinguishing between the structures of the first gas channel 201 and the second gas channel 202 of the waterproof device 20 of the present invention, which may be provided identically or similarly, or respectively, have different shapes and/or structures that may perform corresponding functions.

As shown in fig. 1A to 2, 5B, 7 and 8, 17 of the drawings, the first body 21 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes at least one first magnetic element 251, the first control member 23 includes at least one second magnetic element 252, wherein the first magnetic element 251 is disposed at the first body 21, wherein the magnetism of the first magnetic element 251 and the second magnetic element 252 is disposed in opposite directions, and the first magnetic element 251 and the second magnetic element 252 are disposed opposite to each other, such that the first magnetic element 251 and the second magnetic element 252 can be attracted together when the first control member 23 is pressed against the first body 21. Accordingly, when the first control component 23 is pressed against the first body 21 to seal the first communication opening 2011 of the first gas channel 201, the magnetic attraction between the first magnetic element 251 and the second magnetic element 252 can maintain the sealing of the first control component 23 to the first communication opening 2011 of the first gas channel 201. For example, the magnetic attraction between the first magnetic element 251 and the second magnetic element 252 may prevent the first control assembly 23 from disengaging from the first body 21 due to the impact of water flow to some extent. In addition, when the first control component 23 moves towards the first main body 21 under the action of buoyancy, a certain time is required to reach and press against the first main body 21. The magnetic attraction between the first magnetic element 251 and the second magnetic element 252 can ensure that the first control element 23 is pressed against the position of the first communication opening 2011 of the first main body 21 and the first control element 23 seals the first communication opening 2011 of the first gas channel 201 during the movement of the first control element 23 in the direction approaching the first main body 21 under the buoyancy. Therefore, the magnetic attraction between the first magnetic element 251 and the second magnetic element 252 also has a certain position correcting effect.

It should be noted that, according to the embodiment of the present invention, the magnetic attraction force between the first magnetic element 251 and the second magnetic element 252 (or the total magnetic attraction force between all the first magnetic element 251 and the second magnetic element 252) of the waterproof device 20 is smaller than the gravity of the first control component 23, so that when the buoyancy of the first control component 23 is removed (or a proper size is removed), the first control component 23 can move in a vertical direction (downward) away from the first main body 21 under the action of its own gravity, so as to form the first space 210 communicating with the first gas channel 201 and the external environment, and the communication between the first communication opening 2011 of the first gas channel 201 and the first opening 101 of the gas sensor 10 and the external environment is restored.

As shown in fig. 1A to 2, 8 to 12 and 17 of the drawings, the second main body 22 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes at least one first magnetic member 251A, the second control member 24 includes at least one second magnetic member 252A, wherein the first magnetic member 251A is disposed at the second main body 22, wherein the magnetism of the first magnetic member 251A and the second magnetic member 252A is disposed opposite to each other, and the first magnetic member 251A and the second magnetic member 252A are disposed opposite to each other, such that the first magnetic member 251A and the second magnetic member 252A can be attracted together when the second control member 24 is pressed against the second main body 22. Accordingly, when the second control assembly 24 is pressed against the second body 22 to seal the first opening 2021 of the second gas channel 202, the magnetic attraction between the first magnetic element 251A and the second magnetic element 252A can maintain the sealing of the second control assembly 24 to the first opening 2021 of the second gas channel 202. For example, the magnetic attraction between the first magnetic member 251A and the second magnetic member 252A can prevent the second control assembly 24 from being disengaged from the second body 22 due to the impact of water flow to some extent. In addition, when the second control component 24 moves towards the second main body 22 under the action of buoyancy, a certain time is required to reach and press against the second main body 22. The magnetic attraction between the first magnetic member 251A and the second magnetic member 252A can ensure that the second control member 24 is pressed against the position of the second through opening 2021 of the second main body 22 and the second control member 24 seals the first through opening 2021 of the second gas channel 202 during the movement of the second control member 24 in the direction approaching the second main body 22 under the buoyancy. Therefore, the magnetic attraction between the first magnetic member 251A and the second magnetic member 252A also has a certain position correcting effect. It will be appreciated by those skilled in the art that the designations of the first magnetic element 251, the second magnetic element 252, the first magnetic element 251A, and the second magnetic element 252A herein are merely for distinguishing between the first magnetic element 251, the second magnetic element 252, the first magnetic element 251A, and the second magnetic element 252A of the waterproof device 20 of the gas sensing apparatus of the present invention, which may be configured identically or similarly, or may each have a different shape and/or structure that may perform a corresponding function.

It should be noted that the magnetic attraction force between the first magnetic member 251A and the second magnetic member 252A (or the total magnetic attraction force between all the first magnetic member 251A and the second magnetic member 252A) of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention is smaller than the gravity of the second control assembly 24, so that when the buoyancy of the second control assembly 24 is removed (or a portion of a proper size is removed), the second control assembly 24 can move in a vertical direction (downward) away from the second body 22 under the action of its own gravity to form the second space 220 communicating with the second gas channel 202 and the external environment, respectively, to resume the communication between the first opening 2021 of the second gas channel 202 and the second opening 102 of the gas sensor 10 and the external environment.

As shown in fig. 1A to fig. 2, fig. 5B, fig. 17 of the drawings, the first main body 21 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes at least one first seal 261, the first control member 23 further includes at least one second seal 262, wherein the first seal 261 is disposed at the first inner side 2111 of the first main body 21, the second seal 262 is disposed at the first control member 23, wherein the first seal 261 forms a communication through hole 2610, and the first seal 261 is disposed at a location where the first communication opening 2011 of the first gas channel 201 is located, such that the communication through hole 2610 of the first seal 261 is in water-tight communication with the first communication opening 2011 of the first gas channel 201, wherein the first seal 261 and the second seal 262 are disposed opposite to each other, and the first seal 262 is continuously distributed entity, such that when the first control member 23 is pressed against the first main body 21, the first seal 261 is in communication with the first communication through hole 2011 or the first communication through hole 2011, such that the first seal 261 is in water-tight communication with the first communication through hole 2011 or the first communication opening 2011; when the first control member 23 is away from the first body 21, the first seal 261 and the second seal 262 are separated to form the first space 210 between the first control member 23 and the first body 21 (or between the first seal 261 and the second seal 262), and the first communication opening 2011 of the first gas passage 201 can communicate with the first space 210 through the communication through-hole 2610 of the first seal 261. Preferably, the first seal 261 and the second seal 262 are each made of a flexible material to ensure sealing between the first seal 261 and the second seal 262.

As shown in fig. 1A to 2, 8 to 12 and 17 of the drawings, the second main body 22 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes at least one first sealing member 261A, the second control member 24 further includes at least one second sealing member 262A, wherein the first sealing member 261A is disposed at the second inner side 2211 of the second main body 22, the second sealing member 262A is disposed at the second control member 24, wherein the first sealing member 261A forms a communication through hole 2610A, and the first sealing member 261A is disposed at a position where the first communication through hole 2611 of the second gas channel 202 is located, such that the communication through hole 2610A is in water-tight communication with the first communication through hole 2021 of the second gas channel 202, wherein the first sealing member 261A and the second sealing member 262A are disposed opposite to each other, and the second sealing member 262A is a continuous distribution entity, such that when the second control member 24 is pressed against the first sealing member 202A and the first communication through hole 261A is blocked from being pressed against the first communication through hole 202A and the first communication through hole 202A is closed by the first communication through hole 202A; when the second control member 24 is away from the second body 22, the first sealing member 261A and the second sealing member 262A are separated to form the second space 220 between the second control member 24 and the second body 22 (or between the first sealing member 261A and the second sealing member 262A), and the second communication opening 2021 of the second gas passage 202 can communicate with the second space 220 through the communication through-hole 2610A of the first sealing member 261A. Preferably, the first sealing element 261A and the second sealing element 262A are each made of a flexible material to ensure sealing between the first sealing element 261A and the second sealing element 262A. It will be appreciated by those skilled in the art that the designations herein of the first seal 261, the second seal 262, the first seal element 261A, and the second seal element 262A are merely intended to distinguish between the first seal 261, the second seal 262, the first seal element 261A, and the second seal element 262A of the waterproof apparatus 20 of the present invention, which may be configured identically or similarly, or may each have a different shape and/or structure that may perform a corresponding function.

As shown in fig. 1A to 7 and 17 of the drawings, the first body 21 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention includes a first body portion 211, a first mounting member 212 and a first sidewall 213, wherein the first mounting member 212 and the first sidewall 213 extend from the first body portion 211, respectively, wherein the first body portion 211 forms a first inner side 2111, a first outer side 2112 and the first gas passage 201, wherein the first inner side 2111 of the first body portion 211, the first sidewall 213 and the first mounting member 212 enclose a first operation chamber 2130, the first inner side 2111 of the first body portion 211 and the first mounting member 212 form a first mounting chamber 2120, wherein the first communication opening 2011 of the first gas passage 201 is provided at the first inner side 2111 of the first body portion 211, and is located between the first mounting member 212 and the first sidewall 213, the second communication opening 2012 of the first gas channel 201 is disposed at the first inner side 2111 of the first body portion 211 and surrounded by the first mounting member 212, wherein the second communication opening 2012 of the first gas channel 201 is in communication with the first mounting chamber 2120, the first operating chamber 2130 is in communication with the external environment, the sensing end 11 of the gas sensor 10 is disposed within the first mounting chamber 2120 in a water-tight manner, and the first opening 101 of the gas sensor 10 is disposed at the sensing end 11 of the gas sensor 10 such that the first opening 101 of the gas sensor 10 can communicate with the second communication opening 2012 of the first gas channel 201 through the first mounting chamber 2120. Accordingly, the first space 210 can be regarded as a portion of the first operation chamber 2130, and when the waterproof device 20 is located at the first working position, the first space 210 is formed between the first body 211 of the first body 21 and the first control component 23 and is respectively communicated with the first communication opening 2011 of the first gas channel 201 and the external environment. In other words, the first communication opening 2011 of the first gas channel 201 communicates with the external environment through the first space 210 (or the first operation chamber 2130). Preferably, the sensing end 11 of the gas sensor 10 is water tightly screwed to the first mount 212.

As shown in fig. 1A to 2, 8 to 12 and 17 of the drawings, the second main body 22 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention includes a second main body portion 221, a second mounting member 222 and a second side wall 223, wherein the second main body portion 221 forms a second inner side 2211, a second outer side 2212 and the second gas passage 202, wherein the second mounting member 222 and the second side wall 223 extend from the second outer side 2212 and the second inner side 2211 of the second main body portion 221 of the first main body portion 221, respectively, wherein the second inner side 2211 and the second side wall 223 of the second main body portion 221 are surrounded to form a second operation chamber 2230, the second outer side 2211 and the second mounting member 222 of the second main body portion 221 form a second mounting chamber 2220, wherein the first through opening 2021 of the second gas passage 202 is disposed at the second inner side portion 221, the second through opening 2021 of the second sensor 2 is disposed at the second outer side of the second main body portion 202, the second through opening 2 is disposed at the second through opening 2 of the second sensor 2 and the second through opening of the second sensor 10 is disposed at the second outer side of the second opening of the second main body portion 2 is in communication with the second through the second opening 2, the second through opening 2 is disposed at the second opening 2 of the second opening of the second sensor 2 is in the second opening of the second opening 2 is in communication with the second opening of the second opening 2 is disposed. Accordingly, the second space 220 can be regarded as a portion of the second operation chamber 2230, and when the waterproof device 20 is located at the first working position, the second space 220 is formed between the second body 221 of the second body 22 and the second control component 24 and is respectively communicated with the first conducting opening 2021 of the second gas channel 202 and the external environment. In other words, the first through opening 2021 of the second gas channel 202 communicates with the external environment through the second space 220 (or the second operation chamber 2230). Thus, when the waterproof device 20 is in the second working position, the sensing end 11 of the gas sensor 10 is water-tightly disposed in the first mounting cavity 2120, the elongated end 12 of the gas sensor 10 is water-tightly disposed in the second mounting cavity 2230, and the first communication opening 2011 of the first gas passage 201 and the first communication opening 2021 of the second gas passage 202 are both sealed so that the communication of the first opening 101 of the gas sensor 10 with the external environment and the communication of the second opening 102 of the gas sensor 10 with the external environment are both blocked, thereby preventing water flow from entering the interior of the gas sensor 10 from the second opening 102 of the gas sensor 10 and the first opening 101 of the gas sensor 10, affecting the gas detection or sensing function of the gas sensor 10.

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the second mounting member 222 of the second body 22 of the waterproof device 20 of the gas sensor apparatus according to the embodiment of the present invention further comprises a second mounting portion 2221 and a sealing sleeve 2222, wherein the second mounting portion 2221 extends from the second outer side 2212 of the second body portion 221, wherein the sealing sleeve 2222 forms a sealing sleeve cavity 22220, wherein the elongated end 12 of the gas sensor 10 is adapted to be water tightly sleeved in the sealing sleeve cavity 22220 of the sealing sleeve 2222, wherein the sealing sleeve cavity 22220 is in communication with the second conducting opening 2022 of the second gas channel 202 and the second opening 102 of the gas sensor 10, respectively.

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the second mounting member 222 of the second body 22 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes a fixing plate 2223, the sealing sleeve 2222 includes a sealing sleeve body 22221 and a sealing rim 22222 extending outwardly from the sealing sleeve body 22221, wherein the fixing plate 2223 is fixed to the second floating body 242, the sealing rim 22222 is fixed between the fixing plate 2223 and the second floating body 242, and the sealing sleeve body 22221 forms the sealing sleeve cavity 22220. Accordingly, the elongated end 12 of the gas sensor 10 is adapted to be water tightly received within the seal housing cavity 22220 of the seal housing 2222 such that the second opening 102 of the gas sensor 10 is in communication with the first pass-through opening 2021 of the second gas channel 202 only when the second float 242 is spaced apart from the second body 22, and to ensure that the second opening 102 of the gas sensor 10 seals the first pass-through opening 2021 of the second gas channel 202 when the second float 242 drives the second control assembly 24 against the first pass-through opening 2021 of the second gas channel 202, thereby preventing water from flowing from the first pass-through opening 2021 of the second gas channel 202 into the interior of the gas sensor 10.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first control member 23 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention includes at least one first control member 231 and one first float 232, wherein the first control member 231 is disposed between the first inner side 2111 of the first body portion 211 and the first float 232, wherein the first control member 231 includes a first support portion 2311 and a first fixing portion 2312 extending from the first support portion 2311, wherein the first fixing portion 2312 is adapted to be fixed to the first float 232, wherein the first support portion 2311 forms a low end 23111 and a high end 23112 extending upward from the low end 23111, wherein the high end 23112 of the first support portion 2311 is disposed opposite to the first communication opening 2011 of the first gas passage 201, such that the first control member 23 can be pressed against the first communication opening 23112 of the first control member 2311 when the first control member 23 is driven in a vertical direction (upward) toward the first body 21 by buoyancy. Preferably, the first magnetic element 251 is disposed on the first main body 21, the second magnetic element 252 is disposed on the high end 23112 of the first supporting portion 2311 to ensure that the high end 23112 of the first control member 231 of the first control assembly 23 can be pressed against the first communication opening 2011 of the first gas channel 201 and keep the high end 23112 of the first control member 231 of the first control assembly 23 stably pressed against the first communication opening 2011 of the first gas channel 201 through magnetic attraction therebetween. In some embodiments, the first magnetic element 251 is disposed adjacent to the first communication opening 2011 of the first gas channel 201, and the second magnetic element 252 is disposed at a proper position of the high end 23112 of the first control member 231 of the first support portion 2311 so as to be opposite to each other. As shown in fig. 6 and 7 of the drawings, in some embodiments, the first magnetic element 251 forms a through-going via 2510, wherein the first magnetic element 251 is disposed within the first gas channel 201, the first seal 261 (if any) is disposed outside the first magnetic element 251, the second magnetic element 252 is disposed at the high end 23112 of the first control member 231 of the first support 2311, the second seal 262 (if any) is disposed outside the second magnetic element 252, and the through-going via 2510 of the first magnetic element 251 is in communication with the second communication opening 2021 of the first gas channel 201 and the communication via 2610 of the first seal 261, such that when the first control member 23 (or the first float 232) is driven to move in a direction vertically closer to the first body 21, the high end 23112 of the first control member 231 of the first control member 23 is capable of communicating with the first magnetic element 251 through the second communication opening 2021 of the first gas channel 201 and the first seal 2011 via the first seal 251 and the first communication via the high end 23112 of the first seal member. At this time, the high end 23112 of the first support 2311 is disposed opposite to the communication through-hole 2610 of the first seal 261 (should be regarded as being opposite to the first communication opening 2011 of the first gas channel 201). Accordingly, the through hole 2510 of the first magnetic element 251 can be considered as a part of the first gas channel 201, and the through hole 2510 forms the first communication opening 2011 of the gas channel 201. In other embodiments, the first magnetic element 251 forms a through-hole 2510, wherein the first magnetic element 251 is disposed at the location of the first communication opening 2011 of the first gas channel 201, the first seal 261 (if any) is disposed outside the first magnetic element 251, the second magnetic element 252 is disposed at the high end 23112 of the first control member 231 of the first support 2311, the second seal 262 (if any) is disposed outside the second magnetic element 252, and the through-hole 2510 of the first magnetic element 251 is in communication with the first communication opening 2011 of the first gas channel 201 and the communication through-hole 2610 of the first seal 261, respectively, such that when the first control member 23 (or the first float 232) is driven to move in a direction vertically closer to the first body 21 to the high end 23112 of the first control member 231 of the first control member 23 is capable of blocking communication between the first communication opening 251 and the first magnetic element 201 and the first communication opening 2011 of the first magnetic element 262 by the first seal member 262 and the first communication with the external environment. At this time, the high end 23112 of the first support 2311 is disposed opposite to the communication through-hole 2610 of the first seal 261 (should be regarded as being opposite to the first communication opening 2011 of the first gas channel 201). In other embodiments, the first magnetic element 251 is disposed in the first gas channel 201, and the through hole 2510 of the first magnetic element 251 is respectively in communication with the first communication opening 2011 and the second communication opening 2012 of the first gas channel 201. Accordingly, the first magnetic element 251 is disposed at the first outer side 2112 of the first main body portion 211 of the first main body 21 or inside the first main body portion 211, the first seal 261 and the second seal 262 are disposed at the first inner side 2111 of the first main body portion 211 and the second magnetic element 252, respectively, and the high end 23112 of the first control member 231 of the first control assembly 23 is pressed against the first seal 261 by the second magnetic element 252 and the second seal 262, thereby blocking the communication of the first communication opening 2011 of the first gas passage 201 with the external environment. At this time, the high end 23112 of the first support 2311 is disposed opposite to the communication through-hole 2610 of the first seal 261 (should be regarded as being opposite to the first communication opening 2011 of the first gas channel 201).

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first control member 231 of the first control assembly 23 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention is disposed between the first inner side 2111 of the first body portion 211 and the first floating body 232, and the first control member 231 is located in the first operating chamber 2130.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes at least one first pivot shaft 281, the first control member 231 of the first control assembly 23 further includes a first pivot portion 2313, wherein the first pivot shaft 281 is positioned at a proper location of the first operating chamber 2130, the first pivot portion 2313 is adapted to be pivotably disposed at the first pivot shaft 281, wherein the first fixing portion 2312 extends outwardly from the low end 23111 of the first support portion 2311, and the first pivot portion 2313 extends outwardly from the high end 23112 of the first support portion 2311, such that the first control member 231 forms a lever with the first pivot shaft 281 as a pivot point. Thus, when the first control member 23 (or the first floating body 232) is subjected to buoyancy force and is driven to move in a vertical direction in a direction approaching the first body 21, the buoyancy force applied to the first control member 23 only needs to be greater than the sum of the downward force of the first control member 231 applied to the first floating body 232 and the gravity of the first floating body 232 itself. In other words, due to the leverage effect, the downward force of the first control assembly 23 is less than the sum of the weights of the first control member 231, the first float 232, the second magnetic element 252 (if any), and the second seal 262 (if any). However, to ensure the sealing effect of the high end 23112 of the first control member 231 of the first control member 23 against the first communication opening 2011 of the first gas channel 201, the first fixing portion 2312 is preferably kept horizontal when the high end 23112 of the first control member 231 of the first control member 23 is pressed against the first sealing member 261 by the second magnetic element 252 and the second sealing member 262. At this point, the weight of the first control member 231, the second magnetic element 252 (if present), and the second seal 262 (if present) is substantially all of the first float 232. It should be noted that the first pivot portion 2313 is pivotally disposed on the first shaft 281, so as to help ensure that the high end 23112 of the first control member 231 of the first control member 23 is just pressed against the first communication opening 2011 of the first gas channel 201 when the first control member 23 (or the first floating body 232) is driven to move to the first body 21 in a vertical direction toward the first body 21 under the buoyancy force. Accordingly, when the density of the first control member 23 is equal to or slightly greater than that of water, but the first control member 231 can still be moved upward to be pressed against the first body 21 by the buoyancy force due to the lever effect, the arrangement is considered to be within the scope of the present invention.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first pivoting portion 2313 of the first control member 231 of the first control member 23 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention forms a first pivoting groove 23130, and the first rotation shaft 281 is pivotally disposed at the first pivoting groove 23130.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first sidewall 213 of the first body 21 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention forms a first positioning groove 2131, wherein one end of the first rotating shaft 281 is fixed to the first positioning groove 2131 of the first sidewall 213 to prevent the first rotating shaft 281 from horizontally shaking and ensure that when the first control member 23 (or the first floating body 232) is driven to move to the first body 21 in a vertical direction toward the first body 21 by buoyancy, the high end 23112 of the first control member 231 of the first control member 23 just abuts against the first communication opening 2011 (or the first sealing member 261, if any) of the first gas channel 201.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first body 21 of the waterproof device 20 according to the embodiment of the present invention further includes a first positioning screw 215, wherein one end of the first positioning screw 215 is fixed to the first body portion 211 of the first body 21, and the other end of the first positioning screw 215 is fixed to the first rotating shaft 281 to fix the first rotating shaft 281 in a proper position in the first operating chamber 2130, further ensuring that when the first control assembly 23 (or the first floating body 232) is driven to move in a direction approaching the first body 21 in a vertical direction to the first body 21 by buoyancy, the high end 23112 of the first control member 231 of the first control assembly 23 is just pressed against the first communication opening 2011 of the first gas passage 201.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first pivoting groove 23130 of the first pivoting portion 2313 of the first control member 231 of the first control member 23 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention has a first groove opening 23131. It will be appreciated that the first slot opening 23131 of the first pivot slot 23130 reduces friction between the first pivot portion 2313 of the first control member 231 and the first pivot shaft 281 to facilitate pivotal movement thereof relative to the first pivot shaft 281. In addition, the inner diameter of the first slot opening 23131 of the first pivoting slot 23130 is smaller than the outer diameter of the first rotary shaft 281, thereby ensuring that the first rotary shaft 281 is engaged with the first pivoting slot 23130 and ensuring that the high end 23112 of the first control member 231 of the first control assembly 23 is eventually just pressed against the first communication opening 2011 of the first gas passage 201 when the first control assembly 23 (or the first floating body 232) is driven to move to the first body 21 in a vertical direction toward the first body 21 by buoyancy. In other words, the inner diameter of the first slot opening 23131 of the first pivoting slot 23130 is smaller than the outer diameter of the first rotating shaft 281, so that the high end 23112 of the first control member 231 of the first control member 23 can always face the first communicating opening 2011 of the first gas channel 201 and the high end 23112 of the first control member 23 can finally just abut against the first communicating opening 2011 of the first gas channel 201 when the first control member 23 is driven to move to the first body 21 in a vertical direction toward the first body 21 under the buoyancy. Accordingly, when the first control member 23 (or the first floating body 232) is subjected to buoyancy, it is driven to move to the first body 21 in a direction approaching the first body 21 in a vertical direction, so that the high end 23112 of the first control member 231 of the first control member 23 is pressed against the first sealing member 261 (if any) of the first body 21, thereby sealing the first communication opening 2011 of the first gas passage 201 to block communication with the external environment. Therefore, the first floating body 232 can drive the first control member 231 to move to press against the first inner side 211 of the first main body 21 by the first fixing portion 2312, so that the high end 23112 of the first control member 231 just presses against the first communication opening 2011 of the first gas channel 201 and seals the first communication opening 2011 of the first gas channel 201.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the distal end 23132 of the first pivoting portion 2313 of the first control member 231 of the first control member 23 of the gas sensing device 20 according to the embodiment of the present invention is adapted to be movably disposed in the first limiting groove 21110 of the first inner side 2111 of the first body portion 211 of the first body 21 to ensure that the first pivoting portion 2313 reciprocally pivots along a predetermined path.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first control assembly 23 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes at least one first fixing rod 233, wherein the first fixing portion 2312 of the first control member 231 is lengthened, and the end of the first fixing portion 2312 is fixed to the first floating body 232 by the first fixing rod 233. Further, the first control assembly 23 includes at least one first fixing block 234, wherein the first fixing block 234 is fixed to the first floating body 232, and the first fixing rod 233 is fixed to the first fixing block 234.

As shown in fig. 1A to 2, 8 to 12, 14, 17 of the drawings, the second control element 24 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention comprises at least one second control element 241 and one second float 242, wherein the second control element 241 is arranged between the second inner side 222 of the second body portion 221 and the second float 242, wherein the second control element 241 comprises a second support portion 2411 and a second fixing portion 2412 extending from the second support portion 2411, wherein the second fixing portion 2412 is adapted to be fixed at the second float 242, wherein the second support portion 2411 forms a low end 24111 and a high end 24112 extending upwardly from the low end 24111, wherein the high end 24112 of the second support portion 2411 is arranged opposite the first conductive opening 1 of the second gas channel 202, such that the second control element 24 is capable of being driven in a vertical direction (upward) towards the second control element 202 to the high end 24112 of the second body portion 241 when the second control element 241 is driven by buoyancy. Preferably, the first magnetic member 251A is disposed on the second main body 22, the second magnetic member 252A is disposed on the high end 24112 of the second supporting portion 2411 to ensure that the high end 24112 of the second control member 241 of the second control assembly 24 can be pressed against the first conductive opening 2021 of the second gas channel 202 and to keep the high end 24112 of the second control member 241 of the second control assembly 24 stably pressed against the first conductive opening 2021 of the second gas channel 202 by magnetic attraction therebetween. In some embodiments, the first magnetic element 251A is adjacent to the first conductive opening 2021 of the second gas channel 202, and the second magnetic element 252A is disposed at a proper position of the high end 24112 of the second control element 241 of the second support portion 2411 such that the two are opposite to each other. As shown in fig. 11 and 12 of the drawings, in some embodiments, the first magnetic member 251A is disposed within the second gas channel 202, the first sealing element 261A (if any) is disposed outside of the first magnetic member 251A, the second magnetic member 252A is disposed at the high end 24112 of the second control member 241 of the second support portion 2411, the second sealing element 262A (if any) is disposed outside of the second magnetic member 252A, wherein the through-hole 2510A of the first magnetic member 251A is in communication with the first through-hole 2021 and the second through-hole 2022 of the second gas channel 202, respectively, and the through-hole 2610 of the first sealing element 261A is in communication with the through-hole 2510A of the first magnetic member 251A. In other words, the through hole 2510A of the first magnetic member 251A can be considered as a portion of the second gas channel 202. Accordingly, when the second control member 24 (or the second floating body 242) is subjected to buoyancy, it is driven to move to the second body 22 in a direction approaching the second body 22 in a vertical direction, so that the high end 24112 of the second control member 241 of the second control member 24 can be pressed against the first sealing member 261A and the first magnetic member 251A by the second magnetic member 252A and the second sealing member 262A, thereby sealing the second sealing member 262A at the communication through hole 2610A of the first sealing member 261A, thereby blocking the communication between the first communication opening 2021 of the second gas passage 202 and the external environment; when the buoyancy is removed or partially removed so that the first control member 23 is away from the first body 21, the second sealing member 262A and the first sealing member 261A are separated to form the second space 220 between the second control member 24 and the second body 22 (or between the second sealing member 262A and the first sealing member 261A), and the second communication opening 2021 of the second gas passage 202 can communicate with the second space 220 through the communication through-hole 2610A of the second sealing member 262A. At this time, the high end 24112 of the second support portion 2411 is disposed opposite the communication through-hole 2610A of the first sealing member 261A (to be regarded as being opposite the first conductive opening 2021 of the second gas channel 202). In other embodiments, the first magnetic member 251A is disposed at the location of the first conductive opening 2021 of the second gas channel 202, the first sealing element 261A (if any) is disposed outside the first magnetic member 251A, and the conductive through hole 2510A of the first magnetic member 251A is in communication with the first conductive opening 2021 of the second gas channel 202 and the communication through hole 2610A of the first sealing element 261A, respectively. At this time, the high end 24112 of the second support portion 2411 is disposed opposite the communication through-hole 2610A of the first sealing member 261A (to be regarded as being opposite the first conductive opening 2021 of the second gas channel 202). In other embodiments, the first magnetic member 251A is disposed on the second outer side 2212 of the second body portion 221 of the second body 22, the first sealing element 261A and the second sealing element 262A are disposed on the second inner side 2211 of the second body portion 221 and the outer side of the second magnetic member 252A, respectively, the through-hole 2510A of the first magnetic member 251A is in communication with the second through-opening 2022 of the second gas channel 202 and the second opening 102 of the gas sensor 10, respectively, and the high end 24112 of the second control member 241 of the second control assembly 24 is pressed against the first sealing element 261A by the second magnetic member 252A and the second sealing element 262A, thereby blocking the communication of the first through-opening 2021 of the second gas channel 202 with the external environment. At this time, the high end 24112 of the second support portion 2411 is disposed opposite the communication through-hole 2610A of the first sealing member 261A (to be regarded as being opposite the first conductive opening 2021 of the second gas channel 202).

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the second control member 241 of the second control assembly 24 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention is disposed between the second inner side 2211 of the second body portion 221 and the second floating body 242, and the second control member 241 is located in the second operation chamber 2130.

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes at least one second rotation shaft 282, the second control member 241 of the second control assembly 24 further includes a second pivot portion 2413, wherein the second rotation shaft 282 is positioned at a proper position of the second operation chamber 2130, the second pivot portion 2413 is adapted to be pivotably disposed at the second rotation shaft 282, wherein the second fixing portion 2412 extends outwardly from the second support portion 2411, and the second pivot portion 2413 extends outwardly from the second support portion 2411, such that the second control member 241 forms a lever using the second rotation shaft 282 as a pivot point. Thus, when the second control assembly 24 (or the second floating body 242) is subjected to buoyancy force and is driven to move in a vertical direction in a direction approaching the second body 22, the buoyancy force applied to the second control assembly 24 only needs to be greater than the sum of the downward force of the second control member 241 applied to the second floating body 242 and the gravity of the second floating body 242 itself. In other words, due to the leverage effect, the downward force of the second control assembly 24 is less than the sum of the weight of the second control member 241, the second float 242, the second magnetic element 252A (if any), the second sealing element 262A (if any). However, to ensure the sealing effect of the high end 24112 of the second control member 241 of the second control member 24 against the first conductive opening 2021 of the second gas channel 202, the second fixing portion 2412 preferably remains horizontal when the high end 24112 of the second control member 241 of the second control member 24 is pressed against the first sealing member 261A by the second magnetic member 252A and the second sealing member 262A. At this time, the weight of the second control member 241, the second magnetic member 252A (if any), and the second sealing element 262A (if any) acts substantially entirely on the second float 242. Notably, the second pivot portion 2413 is pivotally disposed on the second rotating shaft 282 to help ensure that the high end 24112 of the second control member 241 of the second control member 24 is just pressed against the first opening 2021 of the second gas channel 202 when the second control member 24 (or the second floating body 242) is driven to move in a vertical direction toward the second body 22 to the second body 22 under the buoyancy force. Accordingly, when the density of the second control element 24 is equal to or slightly greater than that of water, but the second control element 241 can still be moved upward to be pressed against the second body 22 by the buoyancy effect through the lever effect, the arrangement is considered to be within the scope of the present invention.

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the second pivoting portion 2413 of the second control member 241 of the second control element 24 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention forms a second pivoting groove 24130, and the second rotating shaft 282 is pivotally disposed in the second pivoting groove 24130.

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the second body 22 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes a second set screw 225, wherein one end of the second set screw 225 is fixed to the second body portion 221 of the second body 22, and the other end of the second set screw 225 is fixed to the second rotating shaft 282 to fix the second rotating shaft 282 in place in the second operating chamber 2130, further ensuring that when the second control member 24 (or the second floating body 242) is driven to move in a direction approaching the second body 22 in a vertical direction to the second body 22 by buoyancy, the high end 24112 of the second control member 241 of the second control member 24 is just pressed against the first conductive opening 2021 of the second gas channel 202.

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the second pivoting groove 24130 of the second pivoting portion 2413 of the second control member 241 of the second control element 24 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention has a second groove opening 24131. It is appreciated that the second slot opening 24131 of the second pivot slot 24130 reduces friction between the second pivot portion 2413 of the second control member 241 and the second rotational shaft 282 to facilitate smoother pivoting relative to the second rotational shaft 282. In addition, the second slot opening 24131 of the second pivoting slot 24130 has an inner diameter smaller than an outer diameter of the second rotating shaft 282, thereby ensuring that when the second control assembly 24 (or the second floating body 242) is driven to move to the second body 22 in a vertical direction toward the second body 22 by buoyancy, the second rotating shaft 282 is engaged with the second pivoting slot 24130 and ensuring that the high end 24112 of the second control member 241 of the second control assembly 24 is eventually just pressed against the first conductive opening 2021 of the second gas passage 202. In other words, the inner diameter of the second slot opening 24131 of the second pivot slot 24130 is smaller than the outer diameter of the second rotating shaft 282, so that the high end 24112 of the second control member 241 of the second control member 24 can always face the first opening 2021 of the second gas channel 202 and the high end 24112 of the second control member 24 can finally just abut against the first opening 2021 of the second gas channel 202 when the second control member 24 is driven to move to the second body 22 in the vertical direction toward the second body 22 under the buoyancy. Accordingly, when the second control member 24 (or the second floating body 242) is driven to move to the second body 22 in a vertical direction toward the second body 22 by buoyancy, the high end 24112 of the second control member 241 of the second control member 24 is pressed against the first sealing member 261A (if any) of the second body 22, thereby sealing the first conductive opening 2021 of the second gas channel 202 from communication with the external environment. Therefore, the second floating body 242 can drive the second control member 241 to move to press against the second inner side 221 of the second main body 22 by the second fixing portion 2412, so that the high end 24112 of the second control member 241 just presses against the first conducting opening 2021 of the second gas channel 202 and seals the first conducting opening 2021 of the second gas channel 202.

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the second side wall 223 of the second body 22 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention forms at least one second limiting groove 2233, wherein the second limiting groove 2233 extends from top to bottom in the vertical direction, and the end 24121 of the second fixing portion 2412 of the second control member 241 of the second control assembly 24 is adapted to be movably disposed in the second limiting groove 2233, so as to ensure that the second control member 241 reciprocally pivots along a predetermined path in the vertical direction.

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the second side wall 223 of the second body 22 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the invention includes a wall 2234 and a set of guide blocks 2235, wherein each two adjacent guide blocks 2235 form a second limiting groove 2233 therebetween.

As shown in fig. 1A to 2, 8 to 12, 14 and 17 of the drawings, the second control assembly 24 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes at least one second fixing rod 243, wherein the second fixing portion 2412 of the second control member 241 is lengthened, and the end of the second fixing portion 2412 is fixed on the second floating body 242 by the second fixing rod 243. Further, the second control assembly 24 includes at least one second fixing block 244, wherein the second fixing block 244 is fixed to the second floating body 242, and the second fixing rod 243 is fixed to the second fixing block 244.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes a set of guide posts 27, the outer surface 2321 of the first floating body 232 forms a set of first guide grooves 23210, wherein one end 271 of the guide post 27 is disposed at the second body 22, the other end 272 of the guide post 27 is disposed at the first body 21, and the shaft 273 of the guide post 27 is received in the first guide groove 23210 so that the first floating body 232 reciprocates in a vertical direction along a predetermined path under the buoyancy. In other words, the guide post 27 keeps the first floating body 232 reciprocally moving between the first body 21 and the second body 22. Further, the first body 21 forms a set of second guide grooves 2132, wherein the second guide grooves 2132 are disposed in alignment with the first guide grooves 23210 such that the shafts 273 of the guide posts 27 can be received in the second guide grooves 2132. Preferably, the distal end 271 of the guide post 27 is provided with a stopper to prevent the first body 21 from being separated from the guide post 27. More preferably, the other end 272 of the guide post 27 is fixed to the second body 22.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first body portion 211 of the first body 21 of the waterproof device 20 of the gas sensor apparatus according to the embodiment of the present invention is formed with a wire hole 2110 to allow a data wire for transmitting signals to be electrically connected with the gas sensor 10. It will be appreciated that the wire hole 2110 is closed after the data wire is electrically connected to the gas sensor 10.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first body 21 of the waterproof device 20 of the gas sensing apparatus according to the embodiment of the present invention further includes at least one cover plate 214, the first body 211 further forms at least one through cavity 21101, wherein the cover plate 214 is water-tightly covered at a location of the through cavity 21101, thereby sealing the through cavity 21101 between the cover plate 214 and the first body 211, wherein the through cavity 21101 is respectively communicated with the first communication opening 2011 and the second communication opening 2012, thereby forming the first gas channel 201. Further, the first magnetic element 251 is disposed in the conducting cavity 21101, and the conducting through hole 2510 of the first magnetic element 251 is respectively communicated with the first communication opening 2011 and the second communication opening 2012. Accordingly, the first communication opening 2011, the through-hole 2510, the through-cavity 21101 and the second communication opening 2012 form the first gas channel 201.

As shown in fig. 1A to 7, 13 and 17 of the drawings, the first floating body 231 of the first control element 23 and the second floating body 241 of the second control element 24 of the gas sensing device 20 according to the embodiment of the present invention are hollow structures sealed, so that the buoyancy of the first control element 23 and the second control element 24 can drive the first control element 23 and the second control element 24 to move upwards, respectively.

It is noted that the first and/or second are used herein only for naming and distinguishing between different components (or elements) of the present invention, which itself does not have a meaning of how much order or number.

It will be appreciated by persons skilled in the art that the embodiments described above and shown in the drawings are only for the purpose of illustrating the invention and are not to be construed as limiting the invention. All equivalent implementations, modifications and improvements within the spirit of the present invention are intended to be included within the scope of the present invention.

Claims

1. A gas sensing apparatus, comprising:

a gas sensor; and

2. The gas sensing apparatus of claim 1, wherein the waterproof device comprises a first body, a second body, a first control assembly and a second control assembly, wherein the first body, the second body, the first control assembly and the second control assembly are disposed vertically from top to bottom, wherein the gas sensor is disposed between the first body and the second body, the first control assembly is disposed below the first body, the second control assembly is disposed below the second body, wherein the first control assembly is disposed to be movable vertically toward and against the first body to block communication of the first gas passage with the external environment, and to move away from the first body to form a first space between the first body and the first control assembly; the second control component is arranged to be capable of moving in the vertical direction towards the direction close to the second main body to be pressed against the second main body so as to block the communication between the first gas channel and the external environment, and moving in the direction away from the second main body so as to form a second space between the second main body and the second control component, wherein the first space is respectively communicated with the first gas channel and the external environment, the second space is respectively communicated with the second gas channel and the external environment, and when the waterproof device is positioned at the first working position, the first control component is away from the first main body so as to form the first space, and the second control component is away from the second main body so as to form the second space; when the waterproof device is positioned at the second working position, the first control component is propped against the first main body, and the second control component is propped against the second main body.

3. The gas sensing apparatus of claim 2, wherein the first body forms the first gas channel and the second body forms the second gas channel, wherein each of the first gas channels has a first communication opening and a second communication opening, each of the second gas channels has a first communication opening and a second communication opening, wherein the first communication opening is disposed opposite the first control assembly, the second communication opening is disposed in water-tight communication with the first opening of the gas sensor, the first communication opening is disposed opposite the second control assembly, the second communication opening is disposed in water-tight communication with the second opening of the gas sensor, such that the first communication opening of the first gas channel can be sealed when the first control assembly is pressed against the first body; and when the second control component is pressed against the second main body, the first conduction opening of the second gas channel can be sealed.

4. A gas sensing device according to claim 3, wherein the first body further comprises at least one first magnetic element, the first control assembly comprises at least one second magnetic element, wherein the first magnetic element is arranged at the first body, wherein the magnetism of the first magnetic element and the second magnetic element is arranged in opposite directions, and the first magnetic element and the second magnetic element are arranged opposite to each other such that the first magnetic element and the second magnetic element are able to be attracted together when the first control assembly is pressed against the first body.

5. The gas sensing apparatus of claim 4, wherein the second body further comprises at least one first magnetic element, the second control assembly comprises at least one second magnetic element, wherein the first magnetic element is disposed on the second body, wherein the magnetic properties of the first magnetic element and the second magnetic element are arranged in opposite directions, and the first magnetic element and the second magnetic element are disposed opposite one another such that the first magnetic element and the second magnetic element are capable of attracting together when the second control assembly is pressed against the second body.

6. The gas sensing apparatus of claim 5, wherein the density of the first and second control assemblies are each set to be less than water, the magnetic attraction between the first and second magnetic elements is less than the gravitational force of the first control assembly, and the magnetic attraction between the first and second magnetic elements is less than the gravitational force of the second control assembly.

7. The gas sensing apparatus of claim 6, wherein the first body comprises a first body portion, a first mounting member and a first sidewall, wherein the first mounting member and the first sidewall extend from the first body portion, respectively, wherein the first body portion forms a first inner side, a first outer side and the first gas channel, wherein the first inner side of the first body portion, the first sidewall and the first mounting member enclose a first operation chamber, the first inner side of the first body portion and the first mounting member form a first mounting cavity, wherein the first communication opening of the first gas channel is disposed at the first inner side of the first body portion and between the first mounting member and the first sidewall, the second communication opening of the first gas channel is disposed at the first inner side of the first body portion and surrounded by the first mounting member, wherein the first operation chamber is in communication with an environment, the first sidewall and the first mounting member enclose a first operation chamber, the first communication opening of the first gas channel is in communication with the first gas sensing chamber, the first sensor is disposed at the first water sensing opening of the first gas sensing chamber, the first sensor is in communication with the first gas sensing chamber is disposed at the first water sensing chamber.

8. The gas sensing apparatus of claim 7, wherein the second body comprises a second body portion, a second mounting member and a second sidewall, wherein the second body portion forms a second inner side, a second outer side and the second gas passage, wherein the second mounting member and the second sidewall extend from the second outer side and the second inner side of the second body portion, respectively, of the first body portion, wherein the second inner side and the second sidewall of the second body portion enclose a second operating chamber, the second outer side and the second mounting member of the second body portion form a second mounting cavity, wherein the first opening of the second gas passage is disposed on the second inner side of the second body portion, the second opening of the second gas passage is disposed on the second outer side of the second body portion, wherein the second opening of the second gas passage is in communication with an external environment, wherein the second opening of the second gas passage is in communication with the second opening of the second gas passage is capable of being disposed in communication with the second opening of the gas sensor, wherein the second opening of the second gas passage is capable of being disposed in communication with the second opening of the gas sensor.

9. The gas sensing apparatus of claim 7, wherein the first control assembly comprises at least a first control member and a first float, wherein the first control member is disposed between the first inner side of the first body portion and the first float, and the first control assembly is located within the first operating chamber.

10. The gas sensing apparatus of claim 8, wherein the second control assembly comprises at least one second control member and a second float, wherein the second control member is disposed between the second inner side of the second body portion and the second float, and the second control assembly is located within the second operating chamber.

11. A waterproof apparatus for a gas sensing device, comprising:

a first body;

a second body;

a first control assembly; and

12. The water-resistant device of claim 11, wherein each of the first gas passages has a first communication opening and a second communication opening, each of the second gas passages has a first communication opening and a second communication opening, wherein the first communication opening is disposed opposite the first control assembly, the first communication opening is disposed opposite the second control assembly, such that the first communication opening of the first gas passage is sealable when the first control assembly is pressed against the first body; and when the second control component is pressed against the second main body, the first conduction opening of the second gas channel can be sealed.

13. The water-resistant device of claim 12, wherein the first body further comprises at least one first magnetic element, the first control assembly comprises at least one second magnetic element, wherein the first magnetic element is disposed on the first body, wherein the magnetic properties of the first magnetic element and the second magnetic element are arranged in opposite directions, and wherein the first magnetic element and the second magnetic element are disposed opposite each other such that the first magnetic element and the second magnetic element are capable of attracting together when the first control assembly is pressed against the first body.

14. The waterproof device according to claim 13, wherein the second main body further comprises at least one first magnetic member, the second control assembly comprises at least one second magnetic member, wherein the first magnetic member is disposed on the second main body, wherein the magnetism of the first magnetic member and the second magnetic member is arranged in opposite directions, and the first magnetic member and the second magnetic member are disposed opposite to each other such that the first magnetic member and the second magnetic member can be attracted together when the second control assembly is pressed against the second main body.

15. The water-resistant apparatus of claim 14, wherein the first and second control assemblies are each configured to have a density less than water, the magnetic attraction between the first and second magnetic elements is less than the gravitational force of the first control assembly, and the magnetic attraction between the first and second magnetic elements is less than the gravitational force of the second control assembly.

16. The waterproof device according to claim 15, wherein the first main body comprises a first main body portion, a first mounting member and a first side wall, wherein the first mounting member and the first side wall extend from the first main body portion, respectively, wherein the first main body portion forms a first inner side, a first outer side and the first gas passage, wherein the first inner side of the first main body portion, the first side wall and the first mounting member enclose a first operation chamber, the first inner side of the first main body portion and the first mounting member form a first mounting chamber, wherein the first communication opening of the first gas passage is disposed at the first inner side of the first main body portion and between the first mounting member and the first side wall, and the second communication opening of the first gas passage is disposed at the first inner side of the first main body portion and is surrounded by the first mounting member, wherein the first operation chamber is in communication with the external environment, and the first communication opening of the first gas passage is in communication with the first mounting chamber.

17. The waterproof apparatus according to claim 16, wherein the second main body includes a second main body portion, a second mounting member and a second side wall, wherein the second main body portion forms a second inner side, a second outer side and the second gas passage, wherein the second mounting member and the second side wall extend from the second outer side and the second inner side of the second main body portion of the first main body portion, respectively, wherein the second inner side and the second side wall of the second main body portion enclose a second operation chamber, the second outer side and the second mounting member of the second main body portion form a second mounting chamber, wherein the first conduction opening of the second gas passage is disposed at the second inner side of the second main body portion, the second conduction opening of the second gas passage is disposed at the second outer side of the second main body portion, wherein the second operation chamber is in communication with an external environment, and the second conduction opening of the second gas passage is in communication with the second mounting chamber.

18. The waterproof device of claim 16, wherein the first control assembly comprises at least one first control member and a first float, wherein the first control member is disposed between the first inner side of the first body portion and the first float, and the first control assembly is located within the first operating chamber.

19. The waterproof device of claim 17, wherein the second control assembly comprises at least one second control member and a second float, wherein the second control member is disposed between the second inner side of the second body portion and the second float, and the second control assembly is located within the second operating chamber.

20. The waterproof device of claim 18, further comprising at least one first shaft, the first control member of the first control assembly comprising a first support portion, a first fixed portion extending from the first support portion, and a first pivot portion, wherein the first shaft is positioned in place in the first operating chamber, the first pivot portion adapted to be pivotably disposed on the first shaft, wherein the first fixed portion extends outwardly from a lower end of the first support portion, and the first pivot portion extends outwardly from a higher end of the first support portion.