Bioaerosol detector

By designing a bioaerosol detector, using the wind wheel installation chamber and air guide plate to enrich the bioaerosol, and combining fluorescence reaction and brightness detection, the problems of low detection efficiency and low accuracy in the existing technology are solved, and the problem of low detection efficiency and low accuracy is achieved. Fast and accurate bioaerosol detection.

CN222439386UActive Publication Date: 2025-02-07WUXI HONGBEI TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202420952398.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-30
Publication Date
2025-02-07
Estimated Expiration
2034-04-30

AI Technical Summary

Technical Problem

The prior art is inefficient in detecting bioaerosols and the detection results are not accurate enough, mainly because it is necessary to wait for sufficient bioaerosol to dissolve into the liquid and reduce the active ingredients during transportation.

Method used

A bioaerosol detector was designed. Through the design of the wind wheel installation chamber and air guide plate, the bioaerosol in the air is enriched into the distilled water in the water tray, and the reaction of luciferase solution with adenosine triphosphate is used. The content of microorganisms is quickly measured by brightness detection lenses and annular reference light sources.

Benefits of technology

The rapid and efficient detection of the content of bioaerosol is achieved, which improves detection accuracy, reduces detection time, and avoids the reduction of active ingredients during transportation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222439386U_ABST
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Abstract

The utility model relates to a biological aerosol detector which comprises a box body, a ventilation cavity is fixedly connected in the box body, a placing frame is fixedly connected to the bottom wall of the ventilation cavity, a water tray is placed on the placing frame, an enzyme liquid spray head is fixedly connected to the inner wall of the ventilation cavity, an enzyme liquid storage tank is connected to the upper side of the enzyme liquid spray head, and a brightness detection lens is fixedly connected to the inner wall of the ventilation cavity. The inner wall of the ventilation cavity is fixedly connected with an annular reference light source, the annular reference light source and the brightness detection lens are coaxially arranged, the annular reference light source is arranged below the brightness detection lens, the ventilation cavity is provided with an air inlet and an air outlet, the air inlet is connected with a wind wheel mounting cavity, and an air draft wind wheel is arranged in the wind wheel mounting cavity; and an air guide plate is fixedly connected in the ventilation cavity. The biological aerosol detection device can efficiently and quickly detect the content of the biological aerosol, and can improve the detection accuracy at the same time.
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Description

Technical Field

[0001] The utility model relates to aerosol detection equipment, in particular to a bioaerosol detector. Background Art

[0002] Bioaerosols refer to tiny particles suspended in the air, which contain organic matter such as microorganisms, cell fragments, and pollen. To detect or analyze bioaerosols in the air, a container containing liquid needs to be placed in the test environment for a considerable period of time to allow a sufficient amount of bioaerosol to dissolve in the liquid in the container, and then the container is sealed and brought back to the laboratory for measurement through a series of experiments.

[0003] During this process, waiting for enough bioaerosol to dissolve into the liquid in the vessel takes a lot of time, making the detection process inefficient. On the other hand, when the sealed vessel is brought back to the laboratory, the active components of the bioaerosol in the vessel will be reduced, resulting in inaccurate final test results. Utility Model Content

[0004] The utility model aims to provide a bioaerosol detector, which can efficiently and quickly detect the content of bioaerosol and improve the detection accuracy.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The bioaerosol detector includes a box body, a ventilation cavity is fixedly connected in the box body, a placement rack is fixedly connected to the bottom wall of the ventilation cavity, a water tray is placed on the placement rack, an enzyme liquid nozzle is fixedly connected to the inner wall of the ventilation cavity, an enzyme liquid storage tank is connected to the upper side of the enzyme liquid nozzle, a brightness detection lens is fixedly connected to the inner wall of the ventilation cavity, the brightness detection lens opens toward the water tray, an annular reference light source is fixedly connected to the inner wall of the ventilation cavity, the annular reference light source and the brightness detection lens are coaxially arranged, the annular reference light source is arranged below the brightness detection lens, the ventilation cavity is provided with an air inlet and an air outlet, the air inlet is connected to a wind wheel installation cavity, an exhaust wind wheel is arranged in the wind wheel installation cavity, an air guide plate is fixedly connected in the ventilation cavity, the air guide plate is arranged in front of the air inlet, the air guide plate is arranged downwardly from the back to the front, an air inlet is arranged on the rear side of the box body, and the air inlet end of the wind wheel installation cavity is connected to the air inlet through an air inlet channel.

[0007] Specifically, connection ports are provided at both the front and rear ends of the wind wheel installation cavity. The wind wheel installation cavity is in the shape of an oblate sphere. The axial dimension of the wind wheel installation cavity is smaller than the radial dimension. The front end connection port of the wind wheel installation cavity is connected to the ventilation cavity through a pipe section. The cross-sectional area of ​​the pipe section is smaller than the cross-sectional area of ​​the wind wheel installation cavity.

[0008] Specifically, the angle between the air guide plate and the horizontal plane is 25°-35°, and the bottom edge of the air guide plate is higher than the water tray.

[0009] Specifically, two circles of point light sources are arranged on the bottom side of the annular reference light source, and the point light sources of the inner circle are arranged at a higher position than the point light sources of the outer circle.

[0010] Specifically, the ratio of the inner diameter of the annular reference light source to the diameter of the brightness detection lens is 1.4-1.6.

[0011] Specifically, the brightness detection lens is fixed to the inner wall of the ventilation cavity through a lens bracket.

[0012] Specifically, the annular reference light source is fixed to the inner wall of the ventilation cavity through a light source bracket.

[0013] Specifically, the top wall of the box body is provided with an air outlet hole, and the air outlet hole is connected to the air outlet through a pipeline.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] Turn on the bioaerosol detector and rotate the exhaust impeller in the impeller installation cavity, so that the outside air is drawn into the impeller installation cavity through the air inlet, and then flows into the ventilation cavity through the pipe section, and finally discharged from the air outlet through the pipeline. The cross-sectional area of ​​the pipe section is smaller than that of the ventilation cavity, so that the air is decelerated when it flows from the pipe section into the ventilation cavity, which is conducive to the collection of bioaerosols in the air.

[0016] The air guide plate is arranged at the front side of the air inlet, and is tilted downward from the back to the front, so as to guide the drawn air downward to the upper side of the water tray, so that the living microorganisms in the air are enriched in the distilled water in the water tray. When the duration of the ventilation reaches the set value, the ventilation fan stops rotating. At this time, the enzyme liquid nozzle sprays a quantitative luciferase liquid into the water tray. After a period of time, the luciferase liquid fully reacts with adenosine triphosphate (ATP), a substance with a relatively constant content in the living microorganisms in the liquid of the water tray, so that the liquid in the water tray emits fluorescence.

[0017] Then, the brightness detection lens detects the brightness of the liquid in the water tray at this time, and compares the brightness at this time with the above-mentioned "brightness reference value" to obtain the relative brightness. According to the size of the relative brightness, the content of corresponding microorganisms in the liquid in the water tray is calculated. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A three-dimensional view of a bioaerosol detector;

[0020] Figure 2 This is a view of the internal structure of the bioaerosol detector;

[0021] Figure 3 Another internal structure view of the bioaerosol detector;

[0022] Figure 4 Another internal structure view of the bioaerosol detector;

[0023] Figure 5 A three-dimensional view of the water tray.

[0024] In the figure:

[0025] 1. Ventilation cavity; 11. Placement rack; 12. Wind wheel installation cavity; 13. Wind guide plate; 14. Air inlet channel; 141. Air inlet; 15. Pipe section; 16. Air inlet; 17. Air outlet; 18. Air outlet;

[0026] 2. Water tray;

[0027] 3. Enzyme liquid spray head; 31. Enzyme liquid storage tank;

[0028] 4. Brightness detection lens; 41. Ring-shaped reference light source; 411. Point light source. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] See Figures 1 to 5 The bioaerosol detector includes a box body, a ventilation cavity 1 is fixedly connected to the box body, a placement rack 11 is fixedly connected to the bottom wall of the ventilation cavity 1, and a water tray 2 is placed on the placement rack 11 (see Figure 5 ).

[0031] The inner wall of the ventilation cavity 1 is fixedly connected with an enzyme liquid spray head 3, and the upper side of the enzyme liquid spray head 3 is connected with an enzyme liquid storage tank 31. The inner wall of the ventilation cavity 1 is fixedly connected with a brightness detection lens 4, and the brightness detection lens 4 opens toward the water tray 2 ( Figure 3 , Figure 4 The water tray 2 is not shown. The inner wall of the ventilation cavity 1 is fixedly connected with an annular reference light source 41 , which is coaxially arranged with the brightness detection lens 4 , and is arranged below the brightness detection lens 4 .

[0032] The ventilation cavity 1 is provided with an air inlet 16 and an air outlet 17. The air inlet 16 is connected to the wind wheel installation cavity 12. The wind wheel installation cavity 12 is provided with an exhaust wind wheel (not shown). An air guide plate 13 is fixedly connected to the ventilation cavity 1. The air guide plate 13 is arranged in front of the air inlet 16. The air guide plate 13 is arranged downwardly from the back to the front. An air inlet 141 is arranged at the rear side of the box body. The air inlet end of the wind wheel installation cavity 12 is connected to the air inlet 141 through the air inlet channel 14.

[0033] Specifically, connection ports are provided at both the front and rear ends of the wind wheel installation cavity 12. The wind wheel installation cavity 12 is in the shape of an oblate sphere. The axial dimension of the wind wheel installation cavity 12 is smaller than the radial dimension. The front end connection port of the wind wheel installation cavity 12 is connected to the ventilation cavity 1 through a pipe section 15. The cross-sectional area of ​​the pipe section 15 is smaller than the cross-sectional area of ​​the wind wheel installation cavity 12.

[0034] Specifically, the angle between the wind deflector 13 and the horizontal plane is 25°-35°, and the bottom edge of the wind deflector 13 is higher than the water tray 2 ( Figure 3 , Figure 4 The water tray 2 is not shown).

[0035] Specifically, see Figure 4 Two circles of point light sources 411 are arranged on the bottom side of the annular reference light source 41 , and the position of the point light sources 411 in the inner circle is higher than that of the point light sources 411 in the outer circle.

[0036] Specifically, the ratio of the inner diameter of the annular reference light source 41 to the diameter of the brightness detection lens 4 is 1.4-1.6.

[0037] Specifically, the brightness detection lens 4 is fixed to the inner wall of the ventilation cavity 1 through a lens bracket.

[0038] Specifically, the annular reference light source 41 is fixed to the inner wall of the ventilation cavity 1 through a light source bracket.

[0039] Specifically, the top wall of the box body is provided with an air outlet hole 18, and the air outlet hole 18 is connected to the air outlet port 17 through a pipeline (not shown in the figure).

[0040] The working principle of the utility model bioaerosol detector is as follows:

[0041] The bioaerosol detector of the utility model is placed in the environment to be tested. A proper amount of distilled water is injected into the water tray 2, and the water tray 2 is placed on the placement rack 11. The top wall of the placement rack 11 is provided with a placement hole, and the placement hole corresponds to the side wall contour of the water tray 2, so that the water tray 2 can be positioned.

[0042] Then, the annular reference light source 41 irradiates the water tray 2 with a set brightness, and then the brightness detection lens 4 detects the brightness of the liquid in the water tray 2 at this time to obtain a brightness reference value. Then, the annular reference light source 41 is turned off.

[0043] Then, the bioaerosol detector is turned on, and the exhaust impeller (not shown) in the impeller installation cavity 12 is rotated, so that the outside air is sucked into the impeller installation cavity 12 through the air inlet 141, and then flows into the ventilation cavity 1 through the pipe section 15, and finally discharged from the air outlet 18 through the pipeline (not shown). The cross-sectional area of ​​the pipe section 15 is smaller than the cross-sectional area of ​​the ventilation cavity 1, so that the air is decelerated when it flows from the pipe section 15 into the ventilation cavity 1, which is conducive to the collection of bioaerosols in the air.

[0044] The air guide plate 13 is arranged at the front side of the air inlet 16, and the air guide plate 13 is arranged downwardly and tilted from the back to the front, so as to guide the drawn air downwardly to the upper side of the water tray 2, so that the living microorganisms in the air are enriched in the distilled water in the water tray 2. When the duration of the ventilation reaches the set value, the ventilation fan wheel (not shown) stops rotating. At this time, the enzyme liquid nozzle 3 sprays a quantitative luciferase liquid into the water tray 2. After a period of time, the luciferase liquid fully reacts with adenosine triphosphate (ATP), a substance with a relatively constant content in the living microorganisms in the liquid of the water tray 2, so that the liquid in the water tray 2 emits fluorescence.

[0045] Then, the brightness detection lens 4 detects the brightness of the liquid in the water tray 2 at this time, and compares the brightness at this time with the above-mentioned "brightness reference value" to obtain the relative brightness, and calculates the content of corresponding microorganisms in the liquid in the water tray 2 according to the relative brightness.

[0046] The point light sources 411 are arranged in two circles, one high inside and one low outside, to form a uniform light spot. The light luminance of the point light sources 411 can be adjusted as needed, thereby adjusting the "brightness reference value".

[0047] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. Bioaerosol detector, characterized by: The invention comprises a box body, a ventilation cavity (1) is fixedly connected inside the box body, a placement rack (11) is fixedly connected to the bottom wall of the ventilation cavity (1), a water tray (2) is placed on the placement rack (11), an enzyme liquid spray head (3) is fixedly connected to the inner wall of the ventilation cavity (1), an enzyme liquid storage tank (31) is connected to the upper side of the enzyme liquid spray head (3), a brightness detection lens (4) is fixedly connected to the inner wall of the ventilation cavity (1), the brightness detection lens (4) opens toward the water tray (2), an annular reference light source (41) is fixedly connected to the inner wall of the ventilation cavity (1), the annular reference light source (41) and the brightness detection lens (4) are coaxially arranged, and the annular reference light source (41) is fixedly connected to the inner wall of the ventilation cavity (1). The source (41) is arranged below the brightness detection lens (4); the ventilation cavity (1) is provided with an air inlet (16) and an air outlet (17); the air inlet (16) is connected to the wind wheel installation cavity (12); an exhaust wind wheel is arranged in the wind wheel installation cavity (12); an air guide plate (13) is fixedly connected in the ventilation cavity (1); the air guide plate (13) is arranged in front of the air inlet (16); the air guide plate (13) is arranged downwardly and tilted from the back to the front; an air inlet (141) is arranged on the rear side of the box body; and the air inlet end of the wind wheel installation cavity (12) is connected to the air inlet (141) through an air inlet channel (14).

2. The bioaerosol detector according to claim 1, characterized in that: The front and rear ends of the wind wheel installation cavity (12) are both provided with connection ports. The wind wheel installation cavity (12) is in the shape of an oblate sphere. The axial dimension of the wind wheel installation cavity (12) is smaller than the radial dimension. The front connection port of the wind wheel installation cavity (12) is connected to the ventilation cavity (1) via a pipe section (15). The cross-sectional area of ​​the pipe section (15) is smaller than the cross-sectional area of ​​the wind wheel installation cavity (12).

3. The bioaerosol detector according to claim 2, characterized in that: The included angle between the wind guide plate (13) and the horizontal plane is 25°-35°, and the bottom edge of the wind guide plate (13) is higher than the water tray (2).

4. The bioaerosol detector according to claim 1, characterized in that: Two circles of point light sources (411) are arranged on the bottom side of the annular reference light source (41), and the position of the point light sources (411) in the inner circle is higher than that of the point light sources (411) in the outer circle.

5. The bioaerosol detector according to claim 1, characterized in that: The ratio of the inner diameter of the annular reference light source (41) to the diameter of the brightness detection lens (4) is 1.4-1.

6.

6. The bioaerosol detector according to claim 1, characterized in that: The brightness detection lens (4) is fixedly connected to the inner wall of the ventilation cavity (1) via a lens bracket.

7. The bioaerosol detector according to claim 1, characterized in that: The annular reference light source (41) is fixed to the inner wall of the ventilation cavity (1) via a light source bracket.

8. The bioaerosol detector according to claim 1, characterized in that: The top wall of the box body is provided with an air outlet hole (18), and the air outlet hole (18) is connected to the air outlet port (17) through a pipeline.