Quick-response diffusion type waterproof and breathable gas chamber structure of gas sensor

Abstract

The utility model discloses a quick response diffusion type waterproof breathable gas sensor gas chamber structure, which relates to the field of gas detection and comprises a gas chamber frame, a top cover is mounted at the top of the gas chamber frame, and gas inlet windows are arranged on four side surfaces and the bottom of the gas chamber frame; the air inlet window comprises a mounting groove and a pressing frame, and a window communicated with the interior of the air chamber frame is formed in the mounting groove. The gas chamber frame has the beneficial effects that the gas inlet windows are arranged on other side surfaces except the top of the gas chamber frame, so that the speed of detected gas entering the gas chamber frame can be remarkably increased, and meanwhile, the detected gas can enter the gas frame from different directions, so that the uniformity of the detected gas can be improved, and the detection efficiency and accuracy are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas detection, in particular to a fast-response diffusion-type waterproof and breathable gas sensor chamber structure. Background Art

[0002] With the application of laser technology in gas sensors, various types of gas chamber structures have emerged, and the diffusion type gas chamber structure is one of them. That is, the gas in the sensor environment is filled with gas through the free diffusion movement of the gas.

[0003] Since laser gas sensors mainly detect gas concentration by detecting the attenuation of laser light intensity after being absorbed by gas, the speed at which gas diffuses into the gas chamber affects the response time of the sensor, and the uniformity of gas diffusion in the gas chamber affects the accuracy of sensor measurement.

[0004] Common diffusion-type gas sensor shells are cylindrical in shape, with the gas diffusion channel usually at the bottom of the cylinder; another type is rectangular, with the gas diffusion channel usually occupying only a small area on its side.

[0005] The gas diffusion channel area of the common diffusion gas sensor chamber on the market only occupies a small part of the outer wall of the chamber. The gas diffusion into the chamber is slow, resulting in a long response time for the sensor. In addition, the uneven diffusion of gas in the chamber affects the accuracy of the sensor measurement. Utility Model Content

[0006] The purpose of the present invention is to provide a fast-response diffusion-type waterproof breathable gas sensor chamber structure in order to solve the above problems, as described below.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] The utility model provides a fast-response diffusion-type waterproof breathable gas sensor air chamber structure, comprising an air chamber frame, a top cover is installed on the top of the air chamber frame, and air intake windows are provided on the four sides and the bottom of the air chamber frame;

[0009] The air inlet window comprises a mounting groove and a pressing frame, and a window communicating with the interior of the air chamber frame is provided in the mounting groove.

[0010] By adopting the above-mentioned fast-response diffusion-type waterproof and breathable gas sensor air chamber structure, the gas sensor is installed at the bottom of the top cover. By setting air inlet windows on the sides of the air chamber frame other than the top, the speed and uniformity of the detected gas entering the air chamber frame can be significantly improved. By setting a waterproof and breathable membrane, liquid can be prevented from entering the interior of the air chamber frame and affecting the detection results.

[0011] Preferably, a sealing groove is provided on the top of the air chamber frame, and a sealing ring is provided in the sealing groove, and the bottom of the air chamber frame is in contact with the sealing ring.

[0012] Preferably, a mounting hole is provided on the top cover.

[0013] Preferably, a waterproof membrane, a rubber gasket and a metal filter are placed in the installation groove from the inside to the outside, and the compression frame is installed on the surface of the air chamber frame to fix the metal filter in the installation groove by squeezing the metal filter.

[0014] Preferably, the waterproof membrane, rubber gasket and metal filter mesh are all in clearance fit with the inner wall of the installation groove.

[0015] Preferably, a plurality of notches are provided at the bottom of the air chamber frame, and the plurality of notches respectively correspond to the bottoms of the metal filters installed on the four sides of the air chamber frame.

[0016] Preferably, the compression frame is provided with an opening, and the opening is directly opposite to the window, and the opening is not smaller than the size of the window.

[0017] Preferably, the metal filter screen, the air chamber frame and the compression frame are all made of rust-proof and corrosion-resistant materials.

[0018] The beneficial effects are:

[0019] 1. By setting air inlet windows on the sides of the gas chamber frame except the top, the speed at which the detected gas enters the gas chamber frame can be significantly increased. At the same time, the detected gas can enter the gas frame from different directions, which can improve the uniformity of gas detection and thus improve detection efficiency and accuracy.

[0020] 2. The provision of a waterproof and breathable membrane can prevent liquid from entering the air chamber frame and affecting the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a front view structural diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the air chamber frame of the utility model;

[0024] Figure 3It is a schematic diagram of the explosion structure of the utility model.

[0025] The following are the descriptions of the reference numerals:

[0026] 1. Air chamber frame; 2. Compression frame; 3. Metal filter; 4. Rubber gasket; 5. Waterproof and breathable membrane; 6. Top cover; 7. Sealing ring; 8. Sealing groove; 9. Mounting groove; 10. Window; 11. Notch; 12. Air intake window; 13. Mounting hole. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 3 As shown, the utility model provides a fast-response diffusion-type waterproof breathable gas sensor chamber structure, comprising an air chamber frame 1, a top cover 6 is installed on the top of the air chamber frame 1, and air intake windows 12 are provided on the four sides and the bottom of the air chamber frame 1;

[0029] The air intake window 12 includes a mounting groove 9 and a pressing frame 2 . A window 10 communicating with the interior of the air chamber frame 1 is formed in the mounting groove 9 .

[0030] As an optional embodiment, a sealing groove 8 is opened on the top of the air chamber frame 1 , and a sealing ring 7 is arranged in the sealing groove 8 , and the bottom of the air chamber frame 1 is in contact with the sealing ring 7 .

[0031] The top cover 6 is provided with a mounting hole 13 , which facilitates the installation of the gas sensor on the top cover 6 .

[0032] A waterproof permeation membrane 5, a rubber gasket 4 and a metal filter screen 3 are placed in the installation groove 9 from the inside to the outside. The compression frame 2 is installed on the surface of the air chamber frame 1. The metal filter screen 3 is fixed in the installation groove 9 by squeezing the metal filter screen 3. The metal filter screen 3 can prevent foreign matter from contacting the waterproof permeation membrane 5 and causing the waterproof permeation membrane 5 to be damaged.

[0033] The waterproof membrane 5 , the rubber gasket 4 and the metal filter 3 are all fitted with clearances on the inner wall of the installation groove 9 .

[0034] A plurality of slots 11 are provided at the bottom of the air chamber frame 1, and the slots 11 correspond to the bottoms of the metal filter screens 3 installed on the four sides of the air chamber frame 1. Since a rubber gasket 4 is provided between the metal filter screen 3 and the waterproof permeable membrane 5, water easily accumulates between the metal filter screen 3 and the waterproof permeable membrane 5. By providing the slots 11, the accumulated water can be drained out.

[0035] An opening is provided on the compression frame 2 , and the opening is directly opposite to the window 10 , and the opening is not smaller than the size of the window 10 . This design can maximize the air intake of the air intake window 12 .

[0036] The metal filter screen 3, the air chamber frame 1 and the pressing frame 2 are all made of rust-proof and corrosion-resistant materials.

[0037] By adopting the above structure, the gas sensor is installed at the bottom of the top cover 6. By setting an air inlet window 12 on the side of the air chamber frame 1 other than the top, the speed and uniformity of the detected gas entering the air chamber frame 1 can be significantly improved. By setting a waterproof and breathable membrane 5, liquid can be prevented from entering the interior of the air chamber frame 1 and affecting the detection results.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A fast-response diffusion-type waterproof breathable gas sensor chamber structure, characterized by: It comprises an air chamber frame (1), a top cover (6) is installed on the top of the air chamber frame (1), and air inlet windows (12) are provided on the four sides and the bottom of the air chamber frame (1); The air inlet window (12) comprises a mounting groove (9) and a pressing frame (2); a window (10) communicating with the interior of the air chamber frame (1) is provided in the mounting groove (9).

2. The fast-response diffusion-type waterproof breathable gas sensor chamber structure according to claim 1, characterized in that: A sealing groove (8) is provided on the top of the air chamber frame (1), and a sealing ring (7) is provided in the sealing groove (8), and the bottom of the air chamber frame (1) is in contact with the sealing ring (7).

3. The fast-response diffusion-type waterproof breathable gas sensor chamber structure according to claim 1, characterized in that: The top cover (6) is provided with a mounting hole (13).

4. The fast-response diffusion-type waterproof breathable gas sensor chamber structure according to claim 1, characterized in that: The installation groove (9) has a waterproof permeation membrane (5), a rubber gasket (4) and a metal filter (3) placed in sequence from the inside to the outside. The compression frame (2) is installed on the surface of the air chamber frame (1) and fixes the metal filter (3) in the installation groove (9) by squeezing the metal filter (3).

5. The fast-response diffusion-type waterproof breathable gas sensor chamber structure according to claim 4, characterized in that: The waterproof permeation membrane (5), the rubber gasket (4) and the metal filter screen (3) are all in clearance fit with the inner wall of the installation groove (9).

6. The fast-response diffusion-type waterproof breathable gas sensor chamber structure according to claim 4, characterized in that: The bottom of the air chamber frame (1) is provided with a plurality of notches (11), and the plurality of notches (11) respectively correspond to the bottoms of the metal filter screens (3) installed on the four sides of the air chamber frame (1).

7. The fast-response diffusion-type waterproof breathable gas sensor chamber structure according to claim 1, characterized in that: The pressing frame (2) is provided with an opening, and the opening is directly opposite to the window (10), and the size of the opening is not smaller than that of the window (10).

8. The fast-response diffusion-type waterproof breathable gas sensor chamber structure according to claim 4, characterized in that: The metal filter screen (3), the air chamber frame (1) and the pressing frame (2) are all made of rust-proof and corrosion-resistant materials.

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