NDIR module detection device with multiple channels

Abstract

The utility model discloses a NDIR module detection device with multichannel relates to gas detection technical field, including equipment shell, the surface of equipment shell is equipped with the secondary detection gas hole, and the edge of equipment shell is equipped with the air inlet cavity, and the surface of equipment shell is installed with waterproof air permeable membrane, and the air inlet cavity is installed with air inlet mechanism, and air inlet mechanism includes setting in the air inlet cavity mechanism shell body, and the bottom of mechanism shell body is equipped with the main detection gas hole, and the one -way air outlet valve is installed in the main detection gas hole, and the piston plate is swinged and installed in the mechanism shell body, and the air inlet is equipped with in the piston plate, and the drive mechanism is installed in the mechanism shell body, and air inlet mechanism still includes setting in the one -way air inlet valve of air inlet and the sealing strip of fixed mounting in the edge of piston plate. This NDIR module detection device with multichannel, through air inlet mechanism and drive mechanism cooperation uses, can pump the outside gas into equipment shell and carry out detection fast, has improved the response speed of detection.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, specifically to a detection device with a multi-channel NDIR module. Background Technology

[0002] NDIR detection is a detection technique based on the principle of selective absorption of infrared spectroscopy by gas molecules. It is widely used in the measurement of gas concentrations such as CO2, CH4, and CO, and features high precision, long lifespan, and strong anti-interference capabilities.

[0003] In the prior art, patent announcement number CN222866513U discloses a gas detection device based on NDIR, including a PCB board, a base plate, and a top cover arranged sequentially from bottom to top. The top cover includes a cover plate and a surrounding plate disposed around the cover plate. The cover plate and the surrounding plate together form a light cavity. The periphery of the base plate is fitted into the inner wall of the surrounding plate to close the light cavity. The base plate has a first through hole and a second through hole. The PCB board is provided with an infrared light source and a dual-channel infrared sensor. The infrared light source passes through the first through hole and extends into the light cavity, and the dual-channel infrared sensor passes through the second through hole and extends into the light cavity.

[0004] The aforementioned device improves the gas exchange rate by creating several detection vents on the cover plate. However, these vents are covered with a waterproof and breathable membrane, which forces the gas to pass through before entering the detection chamber. While this membrane prevents moisture from entering, it also hinders gas flow. This obstruction slows the gas entry into the chamber, leading to a longer detection response time and consequently, a slower overall detection system response. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-channel NDIR module detection device to solve the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-channel NDIR module detection device, comprising a device housing, a secondary detection air hole on the upper surface of the device housing, an air inlet chamber at the edge of the device housing, a waterproof and breathable membrane installed on the upper surface of the device housing, an air inlet mechanism installed in the air inlet chamber, the air inlet mechanism comprising a housing disposed in the air inlet chamber, a main detection air hole at the bottom of the housing, a one-way air outlet valve installed in the main detection air hole, a piston plate movably installed in the housing, an air inlet on the piston plate, and a drive mechanism installed in the housing.

[0007] Preferably, the air intake mechanism further includes a one-way air intake valve disposed in the air intake port and a sealing strip fixedly installed at the edge of the piston plate.

[0008] Preferably, an installation groove is provided at the edge of the piston plate, and the sealing strip is installed at the edge of the piston plate through the installation groove.

[0009] Preferably, the mechanism housing is connected to the external environment through the air inlet, and the mechanism housing is connected to the equipment housing through the main detection air hole. The one-way air inlet valve only allows external gas to enter the mechanism housing through the air inlet, and the one-way air outlet valve only allows gas inside the mechanism housing to enter the equipment housing through the main detection air hole.

[0010] Preferably, the driving mechanism includes a positioning sleeve fixedly installed at the bottom of the mechanism housing and an armature block fixedly installed at the bottom of the piston plate. A return spring is installed inside the positioning sleeve, and a spring seat is movably installed inside the positioning sleeve. A lifting rod is fixedly installed on the spring seat, and the upper end of the lifting rod is fixedly installed at the bottom of the piston plate. A mounting bracket is fixedly installed on the positioning sleeve, and an electromagnet is fixedly installed on the mounting bracket, with the electromagnet and the armature block aligned vertically.

[0011] Preferably, the piston plate has a connection port at its bottom, and the armature block is installed at the bottom of the piston plate through the connection port.

[0012] Preferably, the lifting rod is movably installed in the positioning sleeve via a spring seat, one end of the return spring is connected to the bottom of the positioning sleeve, and the other end of the return spring is connected to the spring seat.

[0013] Compared with the prior art, the beneficial effects of this utility model are: In this application, when the piston plate moves upward, external gas enters the mechanism housing through the air inlet; conversely, when the piston plate moves downward, the gas inside the housing is discharged through the main detection air port. This process achieves gas pumping, rapidly delivering gas to the inside of the equipment housing for detection. Compared to the passive method of gas naturally entering the equipment housing, the sampling pumping technology significantly improves the response speed of the detection process.

[0014] When the electromagnet is activated, the piston plate moves downwards. This movement compresses the gas inside the mechanism housing and injects it into the equipment housing. Subsequently, when the electromagnet is deactivated, the return spring causes the piston plate to move upwards. The upward movement of the piston plate allows external gas to enter the mechanism housing through the air inlet. By adjusting the periodic activation of the electromagnet, the reciprocating motion of the piston plate can be achieved, thereby realizing continuous pumping of air and ensuring the air supply inside the equipment housing. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the air intake mechanism of this utility model; Figure 4 This is a schematic diagram of the drive mechanism of this utility model.

[0016] The diagram shows the following components: 1. Equipment housing; 2. Secondary detection vent; 3. Air inlet chamber; 4. Waterproof and breathable membrane; 5. Air inlet mechanism; 501. Mechanism housing; 502. Main detection vent; 503. One-way exhaust valve; 504. Air inlet; 505. One-way intake valve; 506. Piston plate; 507. Sealing strip; 6. Drive mechanism; 601. Armature block; 602. Electromagnet; 603. Positioning sleeve; 604. Return spring; 605. Lifting rod; 606. Mounting bracket; 607. Spring seat. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a multi-channel NDIR module detection device, including a device housing 1, a secondary detection air hole 2 on the upper surface of the device housing 1, an air inlet cavity 3 at the edge of the device housing 1, a waterproof and breathable membrane 4 installed on the upper surface of the device housing 1, an air inlet mechanism 5 installed in the air inlet cavity 3, and a drive mechanism 6 installed in the mechanism housing 501. By using the air inlet mechanism 5 and the drive mechanism 6 together, external gas can be quickly pumped into the device housing 1 for detection, thereby improving the detection response speed.

[0019] like Figure 2 and Figure 3 As shown, the air intake mechanism 5 includes a mechanism housing 501 disposed in the air intake chamber 3. A main detection air hole 502 is opened at the bottom of the mechanism housing 501. A one-way air outlet valve 503 is installed in the main detection air hole 502. A piston plate 506 is movably installed in the mechanism housing 501. An air inlet 504 is opened on the piston plate 506. The air intake mechanism 5 also includes a one-way air intake valve 505 disposed in the air inlet 504 and a sealing strip 507 fixedly installed at the edge of the piston plate 506. An installation groove is opened at the edge of the piston plate 506, and the sealing strip 507 is installed at the edge of the piston plate 506 through the installation groove.

[0020] Specifically, as the piston plate 506 begins to move upward, external gas smoothly enters the mechanism housing 501 through the air inlet 504. As the piston plate 506 continues to move downward, the gas originally present in the mechanism housing 501 is discharged through the main detection air port 502. This continuous action pumps gas into the equipment housing 1 for further detection. Compared to the natural entry of gas into the equipment housing 1, the sampling pump method significantly improves the response speed of the detection process.

[0021] like Figure 2 and Figure 4 As shown, the drive mechanism 6 includes a positioning sleeve 603 fixedly installed at the bottom of the mechanism housing 501 and an armature block 601 fixedly installed at the bottom of the piston plate 506. A return spring 604 is installed inside the positioning sleeve 603, and a spring seat 607 is movably installed inside the positioning sleeve 603. A lifting rod 605 is fixedly installed on the spring seat 607, and the upper end of the lifting rod 605 is fixedly installed at the bottom of the piston plate 506. A mounting bracket 606 is fixedly installed on the positioning sleeve 603, and an electromagnet 602 is fixedly installed on the mounting bracket 606. The electromagnet 602 and the armature block 601 are vertically aligned. A connection port is opened at the bottom of the piston plate 506, and the armature block 601 is installed at the bottom of the piston plate 506 through the connection port.

[0022] Specifically, when electromagnet 602 is activated, it triggers a series of mechanical actions. First, the activation of electromagnet 602 attracts armature block 601 to move downwards, which forces return spring 604 to be compressed. As armature block 601 moves downwards, it drives piston plate 506 to move downwards as well. The downward movement of piston plate 506 forces gas from mechanism housing 501 into equipment housing 1. Then, when electromagnet 602 is deactivated, return spring 604 releases its stored energy, causing piston plate 506 to move upwards. During the upward movement of piston plate 506, external gas enters mechanism housing 501 through air inlet 504. By precisely controlling the intermittent activation of electromagnet 602, the reciprocating motion of piston plate 506 can be achieved. This reciprocating motion continuously pumps air into equipment housing 1, ensuring continuous operation of the equipment.

[0023] Working Principle: When in use, electromagnet 602 is first activated. Activation of electromagnet 602 attracts armature block 601 downwards, compressing the return spring 604. The downward movement of armature block 601 drives piston plate 506 downwards, forcing gas from the mechanism housing 501 into the device housing 1 for gas detection. Simultaneously, when electromagnet 602 is deactivated, the return spring 604 drives piston plate 506 upwards. This upward movement allows external gas to enter the mechanism housing 501 through the air inlet 504. By intermittently controlling the activation of electromagnet 602, piston plate 506 reciprocates, continuously pumping air into the device housing 1, thus improving the detection response speed.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-channel NDIR module detection device, comprising a housing (1), wherein a secondary detection air hole (2) is provided on the upper surface of the housing (1), an air inlet cavity (3) is provided at the edge of the housing (1), and a waterproof and breathable membrane (4) is installed on the upper surface of the housing (1), characterized in that: An air intake mechanism (5) is installed in the air intake chamber (3). The air intake mechanism (5) includes a mechanism housing (501) disposed in the air intake chamber (3). A main detection air hole (502) is opened at the bottom of the mechanism housing (501). A one-way air outlet valve (503) is installed in the main detection air hole (502). A piston plate (506) is movably installed in the mechanism housing (501). An air inlet (504) is opened on the piston plate (506). A drive mechanism (6) is installed in the mechanism housing (501).

2. The multi-channel NDIR module detection device according to claim 1, characterized in that: The air intake mechanism (5) also includes a one-way air intake valve (505) disposed in the air intake port (504) and a sealing strip (507) fixedly installed at the edge of the piston plate (506).

3. The multi-channel NDIR module detection device according to claim 2, characterized in that: An installation groove is provided at the edge of the piston plate (506), and the sealing strip (507) is installed at the edge of the piston plate (506) through the installation groove.

4. The multi-channel NDIR module detection device according to claim 3, characterized in that: The housing (501) of the mechanism is connected to the external environment through the air inlet (504). The housing (501) of the mechanism is connected to the equipment housing (1) through the main detection air hole (502). The one-way air inlet valve (505) only allows external gas to enter the housing (501) through the air inlet (504). The one-way air outlet valve (503) only allows gas inside the housing (501) to enter the equipment housing (1) through the main detection air hole (502).

5. The multi-channel NDIR module detection device according to claim 4, characterized in that: The drive mechanism (6) includes a positioning sleeve (603) fixedly installed at the bottom of the mechanism housing (501) and an armature block (601) fixedly installed at the bottom of the piston plate (506). A return spring (604) is installed inside the positioning sleeve (603). A spring seat (607) is movably installed inside the positioning sleeve (603). A lifting rod (605) is fixedly installed on the spring seat (607), and the upper end of the lifting rod (605) is fixedly installed at the bottom of the piston plate (506). A mounting bracket (606) is fixedly installed on the positioning sleeve (603), and an electromagnet (602) is fixedly installed on the mounting bracket (606). The electromagnet (602) is vertically aligned with the armature block (601).

6. The multi-channel NDIR module detection device according to claim 5, characterized in that: The piston plate (506) has a connection port at the bottom, and the armature block (601) is installed at the bottom of the piston plate (506) through the connection port.

7. The multi-channel NDIR module detection device according to claim 6, characterized in that: The lifting rod (605) is movably installed in the positioning sleeve (603) through the spring seat (607). One end of the return spring (604) is connected to the bottom of the positioning sleeve (603), and the other end of the return spring (604) is connected to the spring seat (607).

Images