A tester with gas distribution structure

Abstract

The utility model relates to test appearance technical field, concretely relates to a test appearance with gas distribution structure, including the casing, be equipped with a plurality of detection cavities in the casing, be equipped with the sensor in the detection cavity, the top of casing is equipped with the air inlet groove, a plurality of detection cavities are around the periphery of air inlet groove setting, every detection cavity and the bottom of air inlet groove all are linked together and are equipped with the air vent, the bottom of air inlet groove is equipped with the gas distribution column, the gas of the utility model is handled after the gas distribution column of air inlet groove bottom carries out the gas distribution, respectively from different air vents into each detection cavity, thereby make the sensor of detection cavity can individually detect the gas distribution, prevent mutual interference.

Description

Technical Field

[0001] This utility model relates to the field of testing instrument technology, and specifically to a testing instrument with a gas separation structure. Background Technology

[0002] In fields such as traffic enforcement, industrial safety monitoring, and healthcare, breathalyzers have become crucial on-site testing equipment, such as alcohol testers, hydrogen sulfide testers, and acetone testers. The core detection logic of these instruments relies on the user actively blowing air into the device. The gas to be tested enters the instrument through the blowing channel, comes into contact with a dedicated sensor, and the sensor outputs an electrical signal based on the gas composition and concentration, ultimately converting it into a detection result.

[0003] Currently, multi-gas detection equipment on the market is mainly divided into two categories: one is a single detection chamber structure, which achieves sequential detection of multiple gases by changing sensors or time-sharing detection. This method has low detection efficiency and cannot meet the needs of real-time synchronous detection. Moreover, frequent sensor replacement or switching of detection modes can easily lead to equipment wear and tear and affect detection stability. The other type is a multi-detection chamber structure, which aims to achieve synchronous detection of multiple gases. However, in existing equipment of this type, after the gas enters, it enters each detection chamber sequentially for detection, which affects the consistency of sensor response and causes large deviations in detection results. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by providing a tester with a gas separation structure.

[0005] The objective of this utility model is achieved through the following technical solution: a tester with a gas distribution structure, comprising a housing; a plurality of detection chambers are provided inside the housing; a sensor is provided inside each detection chamber; an air inlet groove is provided on the top of the housing; and the plurality of detection chambers are arranged around the outer periphery of the air inlet groove. Each detection chamber is connected to the bottom of the air inlet slot with an air vent; the bottom of the air inlet slot is provided with an air distribution column.

[0006] The present invention is further configured such that the cross-sectional shape of the air intake groove is circular; and the air distribution column is located at the center of the air intake groove.

[0007] The present invention is further configured such that multiple detection chambers are arranged at equal angles around the outer periphery of the air inlet groove.

[0008] The present invention is further configured such that the top of the housing is provided with a plurality of air outlets; the air outlets are provided in a one-to-one correspondence with the detection chambers; and the air outlets are connected to the detection chambers.

[0009] The present invention is further configured such that the shape of the gas distribution column is a frustum.

[0010] The present invention is further configured such that the side wall of the air distribution column is provided with a first inclined surface and a second inclined surface; the second inclined surface is located at the bottom of the first inclined surface; the inclination angle of the second inclined surface is greater than the inclination angle of the first inclined surface.

[0011] The present invention is further configured such that the bottom of the air inlet groove is provided with a plurality of reflective grooves on the outer periphery of the air distribution column; the reflective grooves are provided in a one-to-one correspondence with the air vents; the reflective grooves are connected to the air vents; and the height of the reflective grooves is lower than the height of the air vents.

[0012] The present invention is further configured such that the tester with the gas distribution structure also includes an air inlet pipe; the air inlet pipe is detachably connected to the air inlet slot.

[0013] The present invention is further configured such that the air intake groove is provided with a blocking step that abuts against the air intake pipe.

[0014] The beneficial effects of this utility model are as follows: After the gas is divided by the gas distribution column at the bottom of the gas inlet groove, it enters each detection chamber from different air inlets, so that the sensors in the detection chambers can detect the gas distribution independently and prevent mutual interference. Attached Figure Description

[0015] The utility model will be further described with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present utility model. For those skilled in the art, other drawings can be obtained based on the following drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model after the intake pipe is hidden; Figure 3 This is a cross-sectional view of the present invention; Figure 4 yes Figure 3 A magnified view of part A in the middle; The components are: 1. Housing; 11. Detection chamber; 12. Sensor; 13. Air outlet; 2. Air inlet groove; 3. Vent; 4. Air distribution column; 41. First inclined section; 42. Second inclined section; 5. Reflective groove; 6. Air inlet pipe; 7. Resisting step. Detailed Implementation

[0017] The present invention will be further described in conjunction with the following embodiments.

[0018] Depend on Figures 1 to 4As can be seen, the tester with a gas distribution structure described in this embodiment includes a housing 1; the housing 1 is provided with a plurality of detection chambers 11; the detection chambers 11 are provided with sensors 12; the top of the housing 1 is provided with an air inlet groove 2; the plurality of detection chambers 11 are arranged around the outer periphery of the air inlet groove 2; Each detection chamber 11 is connected to the bottom of the air inlet 2 by an air vent 3; the bottom of the air inlet 2 is provided with an air distribution column 4.

[0019] Specifically, in this embodiment, the tester with a gas-splitting structure allows the user to blow air into the air inlet 2. After the gas is split by the gas-splitting column 4 at the bottom of the air inlet 2, it enters each detection chamber 11 through different air inlets 3. This allows the sensor 12 of the detection chamber 11 to detect the gas splitting individually. Since the gas in each detection chamber 11 is obtained through an independent air inlet 3, and the gas-splitting column 4 achieves preliminary gas isolation and distribution, gas crossflow between different detection chambers 11 can be effectively avoided. This allows the sensor 12 of the detection chamber 11 to detect the corresponding gas splitting individually, preventing data distortion caused by gas cross-interference.

[0020] The tester with a gas-distributing structure described in this embodiment has a circular cross-sectional shape for the air inlet groove 2, and the gas-distributing column 4 is located at the center of the air inlet groove 2. The circular cross-section of the air inlet groove 2, combined with the gas-distributing column 4 at the center, ensures that the distance from the gas-distributing column 4 to the inner wall of the air inlet groove 2 is equal everywhere. The radial flow path length of the gas within the air inlet groove 2 is completely consistent, preventing local gas accumulation or flow velocity differences due to varying distances between the inner wall of the air inlet groove 2 and the gas-distributing column 4. This ensures uniform gas diffusion within the air inlet groove 2, providing a basis for equal air intake at each subsequent air inlet 3, further improving the consistency of air intake in each detection chamber 11, and reducing detection deviations of the sensor 12 caused by uneven air intake.

[0021] This embodiment describes a tester with a gas distribution structure, in which multiple detection chambers 11 are arranged at equal angles around the outer periphery of the air inlet groove 2. This arrangement ensures that each detection chamber 11 has the same radial distance from the gas distribution column 4, and the angular interval between adjacent detection chambers 11 is the same. After the gas is dispersed by the gas distribution column 4, the resistance and flow path encountered when diffusing outwards are consistent, allowing the gas to reach the air inlet 3 of each detection chamber 11 simultaneously, effectively reducing detection errors between different detection chambers 11.

[0022] The tester with a gas distribution structure described in this embodiment has multiple air outlets 13 on the top of the housing 1; each air outlet 13 corresponds to a detection chamber 11; and the air outlets 13 are connected to the detection chambers 11. This arrangement ensures that the multiple detection chambers 11 do not interfere with each other.

[0023] The tester with a gas distribution structure described in this embodiment has a frustum-shaped gas distribution column 4. The frustum-shaped gas distribution column 4 can guide the airflow to flow smoothly, so that the gas entering the air inlet 2 gradually diffuses to the surroundings along the side wall of the gas distribution column 4, reducing the eddies generated by the airflow impact, thereby allowing the gas to flow more evenly and smoothly to each air inlet 3.

[0024] This embodiment describes a tester with a gas-distributing structure. The sidewall of the gas-distributing column 4 is provided with a first inclined section 41 and a second inclined section 42. The second inclined section 42 is located at the bottom of the first inclined section 41. The inclination angle of the second inclined section 42 is greater than that of the first inclined section 41. Specifically, the inclination angle of the upper first inclined section 41 is smaller, which can initially buffer and guide the high-speed gas entering the air inlet 2, slow down the airflow speed, and prevent the high-speed airflow from directly impacting the bottom of the air inlet 2, causing gas distribution disorder. The inclination angle of the lower second inclined section 42 is larger and it is closer to the air inlet 3. When the gas approaches the air inlet 3, it can further concentrate the airflow towards the corresponding air inlet 3, achieve precise flow guidance, reduce ineffective diffusion of gas at the bottom of the air inlet 2, and ensure that more gas can accurately enter the air inlet 3. This not only improves the gas distribution efficiency but also further ensures the consistency of the air intake of each detection chamber 11.

[0025] This embodiment describes a tester with a gas-distributing structure. The bottom of the air inlet 2 has multiple reflective grooves 5 on the outer periphery of the gas-distributing column 4. Each reflective groove 5 corresponds to a vent 3. The reflective grooves 5 are connected to the vent 3. The height of the reflective grooves 5 is lower than the height of the vent 3. Specifically, since the height of the reflective grooves 5 is lower than the height of the vent 3, after the gas enters the bottom of the air inlet 2, it first flows into the reflective grooves 5 for temporary storage. Then, the gas enters the vent 3 through reflection from the reflective grooves 5. The saliva carried by the gas, due to its weak aerodynamic properties, will remain in the reflective grooves 5, thereby preventing saliva from entering the detection chamber 11 and causing corrosion of the sensor 12.

[0026] This embodiment describes a tester with a gas-distribution structure, which further includes an air inlet pipe 6; the air inlet pipe 6 is detachably connected to the air inlet slot 2. This design facilitates air blowing by the user.

[0027] The tester with a gas distribution structure described in this embodiment has an air inlet slot 2 with a stop step 7 that abuts against the air inlet pipe 6. When installing the air inlet pipe 6, the user only needs to insert the air inlet pipe 6 until it abuts against the stop step 7, ensuring that the installation depth is consistent each time and avoiding blockage of the air vent 3 due to excessive installation.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A testing instrument with a gas separation structure, characterized in that: Includes a housing (1); the housing (1) is provided with multiple detection chambers (11); the detection chambers (11) are provided with sensors (12); the top of the housing (1) is provided with an air inlet groove (2); the multiple detection chambers (11) are arranged around the outer periphery of the air inlet groove (2); Each detection chamber (11) is connected to the bottom of the air inlet groove (2) by an air vent (3); the bottom of the air inlet groove (2) is provided with an air distribution column (4).

2. The testing instrument with a gas-distributing structure according to claim 1, characterized in that: The cross-sectional shape of the air intake groove (2) is circular; the air distribution column (4) is located at the center of the air intake groove (2).

3. A testing instrument with a gas-distributing structure according to claim 2, characterized in that: Multiple detection chambers (11) are arranged at equal angles around the outer periphery of the air inlet groove (2).

4. The tester with a gas-distributing structure according to claim 1, characterized in that: The top of the housing (1) is provided with multiple air outlets (13); the air outlets (13) are arranged in a one-to-one correspondence with the detection chambers (11); the air outlets (13) are connected to the detection chambers (11).

5. A testing instrument with a gas-distributing structure according to claim 1, characterized in that: The gas distribution column (4) is truncated cone in shape.

6. A testing instrument with a gas-distributing structure according to claim 5, characterized in that: The sidewall of the gas distribution column (4) is provided with a first inclined surface (41) and a second inclined surface (42); the second inclined surface (42) is located at the bottom of the first inclined surface (41); the inclination angle of the second inclined surface (42) is greater than the inclination angle of the first inclined surface (41).

7. A testing instrument with a gas-distributing structure according to claim 5, characterized in that: The bottom of the air inlet groove (2) is provided with multiple reflective grooves (5) on the outer periphery of the air distribution column (4); the reflective grooves (5) are provided one-to-one with the air inlet (3); the reflective grooves (5) are connected to the air inlet (3); the height of the reflective grooves (5) is lower than the height of the air inlet (3).

8. A testing instrument with a gas-distributing structure according to claim 1, characterized in that: The tester with the gas distribution structure also includes an air inlet pipe (6); the air inlet pipe (6) is detachably connected to the air inlet slot (2).

9. A testing instrument with a gas-distributing structure according to claim 8, characterized in that: The air intake slot (2) is provided with a blocking step (7) that abuts against the air intake pipe (6).

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