Detection device and air conditioner

Abstract

The utility model relates to the technical field of bacterium detection, particularly provides a detection device and an air conditioner, and aims to solve the problems that a bacterium quantity detection method in the prior art is long in period, cannot be used for civil use and the like. And a controller. The excitation light source arranged in the detection chamber of the detection device is configured to be capable of emitting excitation light to excite microorganisms carried in the air to be detected to emit fluorescence after being electrified, and the fluorescence detection component is configured to be capable of detecting the fluorescence emitted by the microorganisms carried by the air to be detected after the excitation light irradiates the air to be detected after being electrified. An air channel is formed between the air inlet and the air outlet in the shell, and air to be detected flows through the detection cavity at an approximately stable speed through the air channel. Through the arrangement of the excitation light source and the fluorescence detection component, the air flows through the detection chamber at an approximately stable speed, the quantity of microorganisms carried by the air to be detected can be timely and accurately detected, the structure is simple, and the detection process is simple and rapid.

Description

[0001] This application claims priority to Chinese patent application CN202410235677.7, filed on March 1, 2024, entitled “Bacterial Detection Module”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This utility model relates to the field of bacterial detection technology, specifically providing a detection device and an air conditioner. Background Technology

[0003] Microorganisms exist in the air to varying degrees. These microorganisms usually attach to dust or droplets, and as these particles remain suspended in the air, they can become a medium for transmitting respiratory diseases, seriously endangering human health. For the sake of public health, it is necessary to monitor the number of microorganisms in the air and take timely measures to reduce their numbers when they exceed safe levels.

[0004] Currently, detecting the number of microorganisms in the air usually requires first sampling using a specific sampler, then culturing the sampled air in a culture medium before counting. Commonly used methods for bacterial detection include sedimentation plate method, liquid impaction method, impaction plate method, and membrane filter method. In the sedimentation plate method, a plate containing agar medium is placed at the test location, the plate lid is opened to expose it for a certain period of time, and then it is incubated to count the number of colonies. The liquid impaction method, also known as the absorption tube method, involves rapidly absorbing a fixed amount of air into an absorbent liquid inside a tube, then taking a certain amount of this liquid, diluting it, and incubating it on a plate to count the number of colonies or isolate pathogenic microorganisms. The impaction plate method involves rapidly aspirating a fixed amount of air and impacting the surface of one or more rotating or stationary air plates, then incubating the plates and counting the number of colonies. The membrane filter method involves passing a fixed amount of air through a special filter membrane supported on a filter, such as a nitrocellulose membrane, causing dust particles carrying microorganisms to adhere to the surface of the filter membrane. The dust particles trapped on the filter membrane are then eluted into a suitable solution, and a certain amount of this solution is taken for bacterial count determination.

[0005] However, these detection methods typically require sampling using a specific sampler followed by culture in a culture medium. This means that bacterial count testing can only be performed in qualified laboratories. The process necessitates on-site sampling by professionals, followed by bringing the samples back to the laboratory for culture and testing, which has drawbacks such as long testing cycles and limited applicability to civilian use.

[0006] Accordingly, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0007] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problems that existing methods for detecting the number of bacteria have long cycles and are not applicable to civilian use.

[0008] In a first aspect, the present invention provides a detection device, the detection device comprising a housing (1), an excitation light source (2), and a fluorescence detection component (3). A detection chamber (11) is provided inside the housing (1). The excitation light source (2) and the fluorescence detection component (3) are disposed inside the detection chamber (11). The excitation light source (2) is configured to emit excitation light after being powered on. The excitation light can excite microorganisms carried in the air to be tested to emit fluorescence. The fluorescence detection component (3) is configured to detect the fluorescence emitted by the microorganisms carried in the air to be tested after being irradiated by the excitation light after being powered on, and output the detection result. An air inlet (111) and an air outlet (141) are provided on the housing (1). An air duct is formed between the air inlet (111) and the air outlet (141) inside the housing (1). The air to be tested flows through the detection chamber (11) at a generally stable speed via the air duct.

[0009] In the preferred embodiment of the above-mentioned detection device, an air inlet chamber (13) is further provided inside the outer shell (1), and an air inlet (111) is provided in the air inlet chamber (13). A second ventilation structure (16) is provided between the air inlet chamber (13) and the detection chamber (11), and the air inlet chamber (13) is connected to the detection chamber (11) through the second ventilation structure (16).

[0010] In the preferred embodiment of the above detection device, the air inlet (111) is located on the air inlet chamber (13) away from the second ventilation structure (16), and the fluorescent detection component (3) is located in the detection chamber (11) close to the second ventilation structure (16).

[0011] In the preferred embodiment of the above-mentioned detection device, the air inlet chamber (13) includes a body (131) and a cover (132) covering the body (131), the second ventilation structure (16) is disposed between the body (131) and the detection chamber (11), and the air inlet (111) is disposed on the cover (132).

[0012] In the preferred embodiment of the above-mentioned detection device, an air outlet chamber (14) is further provided inside the outer shell (1), and an air outlet (141) is provided in the air outlet chamber (14). The air outlet chamber (14) and the detection chamber (11) are in communication with each other.

[0013] In the preferred embodiment of the above detection device, a third ventilation structure (17) is provided between the detection chamber (11) and the air outlet chamber (14). The air outlet chamber (14) is connected to the detection chamber (11) through the third ventilation structure (17). The third ventilation structure (17) is located near the fluorescent detection component (3).

[0014] In the preferred embodiment of the above-mentioned detection device, a flow guide member (142) is provided in the air outlet chamber (14) at a position corresponding to the third ventilation structure (17). The flow guide member (142) is configured to guide the air flowing out through the third ventilation structure (17) to a region in the air outlet chamber (14) away from the air outlet (141).

[0015] In the preferred embodiment of the above-mentioned detection device, the flow guiding member (142) is at least partially aligned with the third ventilation structure (17) and is configured as a curved surface.

[0016] In the preferred embodiment of the above-mentioned detection device, the detection device further includes a power supply module (4), which is disposed inside the housing (1) and is electrically connected to the excitation light source (2) and the fluorescence detection component (3) respectively.

[0017] In the technical solution of this utility model, the detection device includes a housing, an excitation light source, and a fluorescence detection component. The housing contains a detection chamber, and both the excitation light source and the fluorescence detection component are disposed within this chamber. The excitation light source is configured to emit excitation light when powered on. This excitation light excites microorganisms carried in the air to be tested to fluoresce. The fluorescence detection component is configured to detect the fluorescence emitted by the microorganisms in the air after it has been irradiated by the excitation light, and output the detection result. Since microorganisms, especially bacteria, typically possess various fluorescent groups, they will fluoresce under the induction of excitation light. Thus, when the air to be tested enters the detection chamber and is irradiated by the excitation light, the microorganisms carried in the air will fluoresce. The fluorescence detection component located in the detection chamber detects this fluorescence in a timely manner, thereby obtaining the number of microorganisms in the air. The housing has an air inlet and an air outlet, and an air duct is formed between the air inlet and the air outlet inside the housing. The air to be tested flows through the detection chamber at a relatively stable speed via the air duct. By setting up the excitation light source and the fluorescence detection component in the same chamber, and allowing the air to be tested to flow through the detection chamber at a roughly stable speed, the fluorescence emitted by the microorganisms carried in the air after being irradiated by the excitation light can be detected in a timely manner without the need for a complex optical path. This allows for the determination of the number of microorganisms carried in the air, eliminating the need for sampling and culturing. The detection process is simple, fast, and time-saving, and can be widely applied to various scenarios.

[0018] Furthermore, an air inlet chamber is provided inside the outer casing, with an air inlet located within this chamber. This air inlet chamber is connected to the detection chamber via a second ventilation structure. During the detection process, the air to be tested first enters the air inlet chamber through the air inlet, and then enters the detection chamber through the second ventilation structure. In other words, the air to be tested fills the air inlet chamber during the detection process. This ensures that even if the flow rate or velocity of the air to be tested fluctuates, the velocity change of the air flowing through the detection chamber is small or even negligible. Consequently, the air to be tested can always flow through the detection chamber at a relatively stable velocity, ensuring the accuracy of the detection.

[0019] Furthermore, the air inlet is positioned on the air inlet chamber away from the second ventilation structure, while the fluorescent detection component is positioned inside the detection chamber close to the second ventilation structure. In this way, after the air to be tested enters the detection chamber through the air inlet, it first flows through the entire detection chamber before entering the detection chamber through the second ventilation structure. This effectively reduces the impact of fluctuations in the flow rate or velocity of the air to be tested on the speed at which the air flows through the detection chamber, ensuring that the air to be tested flows through the detection chamber at a roughly stable speed and ensuring the accuracy of the detection.

[0020] Furthermore, the outer casing also includes an air outlet chamber that communicates with the detection chamber. The air outlet is located in this air outlet chamber. In this way, after the air that has been tested exits from the detection chamber, it enters and fills the air outlet chamber before being discharged to the external environment through the air outlet. This can better stabilize the airflow through the detection chamber, allowing the air to be tested to flow through the detection chamber at a roughly stable speed, thereby better ensuring the accuracy of the test.

[0021] Furthermore, the air outlet chamber is connected to the detection chamber via a third ventilation structure, which is located near the fluorescent detection component. A flow guide component is installed in the air outlet chamber at a position corresponding to the third ventilation structure. This flow guide component can guide the air flowing out through the third ventilation structure to an area in the air outlet chamber away from the outlet. This increases the residence time of the air in the air outlet chamber, allowing the air to be tested to flow through the detection chamber at a more stable flow rate. At the same time, it can prevent the air flowing out of the detection chamber from flowing back into the detection chamber and affecting the detection of the fluorescent detection component, thereby better ensuring the accuracy of the detection.

[0022] Furthermore, the detection device also includes a power supply module, which is located inside the housing and is used to power the excitation light source and the fluorescence detection component. This ensures the operation of the detection device and simplifies its internal structure, avoiding the design and application of complex optical paths.

[0023] Secondly, this utility model also provides an air conditioner equipped with the detection device described in any of the aforementioned solutions.

[0024] It should be noted that this air conditioner has all the technical effects of the aforementioned detection device, which will not be repeated here. Attached Figure Description

[0025] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0026] Figure 1 This is a structural diagram of a detection device according to an embodiment of the present invention;

[0027] Figure 2 This is an exploded view (a) of a detection device according to an embodiment of the present invention;

[0028] Figure 3 This is a structural diagram of the second part of the detection device according to an embodiment of the present invention;

[0029] Figure 4 This is an exploded view (II) of the detection device according to an embodiment of the present invention;

[0030] Figure 5 This is an exploded view (III) of the detection device according to an embodiment of the present invention.

[0031] List of reference numerals in the attached diagram:

[0032] 1. Outer shell; 11. Detection chamber; 111. Air inlet; 12. Matting chamber; 121. Common side; 122. First side; 123. Second side; 124. Third side; 125. Matting assembly; 1251. First matting plate; 1252. Second matting plate; 13. Air inlet chamber; 131. Body; 132. Cover; 14. Air outlet chamber; 141. Air outlet; 142. Air guide component; 15. First ventilation structure; 16. Second ventilation structure; 17. Third ventilation structure; 18. First part; 181. Annular boss; 19. Second part; 110. Partition; 2. Excitation light source; 3. Fluorescence detection component; 4. Power supply module. Detailed Implementation

[0033] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0034] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] Currently, detecting the number of bacteria in the air typically requires sampling with a specific sampler, followed by culturing the sample in a culture medium, which can take anywhere from several hours to several days. After culturing, the culture medium is then tested to determine the number of bacterial colonies in the air. This entire process is time-consuming and usually requires a qualified laboratory, limiting its widespread application in the civilian market. Therefore, the detection device of this invention uses an excitation light source located in the detection chamber to emit excitation light that irradiates the air to be tested, causing microorganisms carried in the air to fluoresce. A fluorescence detection component detects the fluorescence, and the air flows through the detection chamber at a relatively stable speed via an air duct. This eliminates the need for complex optical paths, sampling, and culturing, allowing for direct, rapid, and accurate detection of the number of microorganisms carried in the air.

[0037] The following reference Figures 1 to 5 This section will describe possible implementations of the detection device of this utility model.

[0038] like Figures 1 to 5As shown, the detection device includes a housing 1, an excitation light source 2, and a fluorescence detection component 3. The excitation light source 2 is configured to emit excitation light when powered on, which excites microorganisms carried in the air to be tested to fluoresce. The fluorescence detection component 3 is configured to detect the fluorescence emitted by the microorganisms in the air after being irradiated with the excitation light, and output the detection result. This is because there are many types of microorganisms carried in the air to be tested, and various microorganisms typically possess various fluorescent groups. Most microorganisms (especially bacteria) have roughly the same fluorescent groups, mainly composed of porphyrins, coenzymes, NADH, and flavins. These fluorescent groups will produce fluorescence under the induction of excitation light. However, due to differences in the content of each fluorescent group, the structure of the microorganism, and the degree to which different microorganisms absorb laser energy, these differences will produce different fluorescence signals under the irradiation of the excitation light. The fluorescence detection component 3, through analysis of the fluorescence characteristics and fluorescence signals, ultimately determines the content of microorganisms carried in the air to be tested. In other words, when it is necessary to detect the number of microorganisms in the air, the air is irradiated with excitation light emitted by the excitation light source 2, and then the fluorescence emitted by the microorganisms is detected by the fluorescence detection component 3, thus obtaining the number of microorganisms in the air. No sampling or cultivation is required; results can be obtained directly through detection. The outer shell 1 of this utility model is provided with a detection chamber 11, which is configured according to... Figure 2 As shown, the orthographic projection of the detection chamber 11 is approximately rectangular, with the excitation light source 2 and the fluorescence detection component 3 extending along the length of the detection chamber 11 (approximately). Figure 2 The excitation light source 2 and the fluorescence detection component 3 are arranged sequentially in the detection chamber 11 along the vertical direction of the excitation light (approximately). Figure 2 The detector is arranged sequentially from top to bottom, with the fluorescence detection component 3 positioned within the irradiation area of ​​the excitation light. When the air to be tested flows through the detection chamber 11, the microorganisms carried in the air will emit fluorescence under the irradiation of the excitation light. The fluorescence detection component 3, located within the irradiation area, can immediately detect this fluorescence. This eliminates the need for a complex optical path, simplifying the internal structure of the detection device and enabling comprehensive detection of fluorescence emitted within the detection chamber 11, thus ensuring detection accuracy. In other words, using the detection device of this application, simply allowing the air to be tested to flow through the detection chamber 11 is sufficient to quickly detect the content of the microorganisms it carries, obtaining the final detection result. This device can be widely applied in various scenarios. Obviously, the excitation light source 2 and the fluorescence detection component 3 can also be arranged in a different direction. Figure 2 The components are arranged sequentially along the vertical direction, and the line connecting them can form an angle with the vertical direction, as long as the fluorescence detection component 3 is placed within the irradiation area of ​​the excitation light. Of course, the orthographic projection of the detection chamber 11 can also be other possible shapes such as square, polygon, or circle.

[0039] An extinction chamber 12 is also provided inside the outer casing 1. The side of the extinction chamber 12 includes a common side 121, a first side 122, a second side 123, and a third side 124, forming a roughly rectangular structure. The first side 122 is opposite to the common side 121, and the second side 123 and third side 124 are opposite to each other, with their ends connected to the first side 122 and the common side 121, respectively. The extinction chamber 12 shares the common side 121 with the detection chamber 11. A first through-hole, serving as a first ventilation structure 15, is provided on the common side 121. This first through-hole is roughly rectangular, and the extinction chamber 12 communicates with the detection chamber 11 through this first through-hole. The extinction chamber 12 is positioned along the direction of the excitation light (approximately...). Figure 2 The first through-hole (located downstream of the detection chamber 11, from top to bottom) is positioned along the direction of the excitation light and is at least partially aligned with the excitation source 2. Thus, during operation of the detection device, after the excitation light irradiates the air to be tested, excess excitation light and stray light generated during the irradiation process can directly enter the extinction chamber 12 through this first through-hole. An optical trap is formed within the extinction chamber 12. This optical trap absorbs and eliminates the light entering the extinction chamber 12, eliminating optical noise and preventing interference with the fluorescence signal and affecting the detection of the fluorescence detection component 3. This allows for more accurate detection of the fluorescence signal emitted by microorganisms carried in the air to be tested, improving detection accuracy.

[0040] It should be noted that the first through hole can also be a square, circular, elliptical, polygonal, or other possible shapes. Obviously, the detection chamber 11 and the matting chamber 12 may not share the common side 121. In this case, the first ventilation structure 15 is generally a hollow tubular structure connecting the detection chamber 11 and the matting chamber 12. Of course, the side of the matting chamber 12 can also include other numbers and sizes of sides, forming other possible shapes such as square, polygonal, or circular.

[0041] It should be noted that the fluorescence detection component 3 can be a photosensitive sensor, photodetector, ultraviolet sensor, phototube, photomultiplier tube, etc. Taking the fluorescence detection component 3 as a photosensitive sensor as an example, the photosensitive sensor can be a PN photodiode such as a silicon photodiode, or it can be a PIN photodiode, avalanche photodiode, Schottky photodiode, and MSM photodiode, etc. Without departing from the basic principles of this application, those skilled in the art can flexibly select the specific type of fluorescence detection component 3 according to the specific application scenario, as long as it can accurately detect the received fluorescence.

[0042] Preferably, the fluorescence detection component 3 is a silicon photodiode. Using a silicon photodiode as the fluorescence detection component 3 can capture and detect fluorescence in a timely manner, and its cost is low, which can effectively reduce the overall cost of the detection device and is conducive to its application and promotion.

[0043] In one possible implementation, the excitation source 2 is a laser emitter or laser, that is, a device capable of emitting laser light. In other words, the excitation light emitted by the excitation source 2 is laser light, which has characteristics such as directional emission, extremely high brightness, and monochromaticity. This laser light can excite fluorescent groups in microorganisms, producing fluorescence. It should be noted that the laser light can be a helium-neon laser, a laser diode, etc. This invention does not limit the specific type of laser light, as long as the laser light can emit light capable of exciting fluorescence.

[0044] It should be noted that the excitation source 2 can also be an ultraviolet lamp or an LED lamp capable of emitting UVA ultraviolet light. Obviously, the excitation source 2 can also be a device capable of emitting excitation light in the 340nm–405nm wavelength range, that is, excitation light with wavelengths between 340nm and 405nm. Without departing from the basic principles of this application, those skilled in the art can flexibly choose the specific type of excitation source 2 according to the specific application scenario, as long as it can emit light capable of exciting microorganisms to fluoresce.

[0045] like Figures 1 to 5 As shown and in accordance with Figure 2 As shown, the matting chamber 12 is equipped with a matting component 125, which includes a first matting plate 1251. The first matting plate 1251 is a generally rectangular plate structure. The first side of the first matting plate 1251 is connected to the right side of the first through hole on the common side 121, and the second side of the first matting plate 1251 is connected to the first side 122. At least a portion of the first matting plate 1251 is aligned with the first through hole. In this way, when light enters the matting chamber 12 through the first through hole, it can be incident into the matting chamber 12 at a reasonable angle, and then illuminate the first matting plate 1251 at a reasonable angle. The light is then reflected by the first matting plate 1251 to other areas within the matting chamber 12, and then reflected multiple times by the first side 122, the third side 124, the common side 121, and the first matting plate 1251. The light that is reflected multiple times will gradually attenuate until it is eliminated. Obviously, the first matting plate 1251 can also be a curved plate, an arc plate, a wave plate, or other possible shapes, as long as it can reflect the excitation light to other areas of the matting chamber 12.

[0046] It should be noted that the second side of the first matting plate 1251 may not be connected to the first side 122. Instead, the second side of the first matting plate 1251 may be spaced apart from the first side 122. In this case, as long as part of the first matting plate 1251 is aligned with the first through hole, it can also reflect the light entering the matting chamber 12.

[0047] It should also be noted that the first side of the first matting plate 1251 can also be connected to the left side of the first through hole on the common side 121. Of course, the first side of the first matting plate 1251 can also be connected to any one of the first side 122, the second side 123, or the third side 124, instead of the common side 121. Without departing from the basic principles of this application, those skilled in the art can flexibly choose the specific arrangement of the first matting plate 1251 in the matting chamber 12 according to the specific application scenario, as long as at least a portion of it is aligned with the first through hole and can reflect the light entering the matting chamber 12 to attenuate it.

[0048] In one possible implementation, the angle between the first matting plate 1251 and the common side 121 is 40° to 60°. In this case, the excitation light can be completely reflected by the first matting plate 1251 into the interior of the matting chamber 12, and will not be reflected into the detection chamber 11. This better avoids interference with the detection of the fluorescence detection component 33 and ensures the accuracy of the detection device. Preferably, the angle between the first matting plate 1251 and the common side 121 is 45°.

[0049] like Figures 1 to 5 As shown and in accordance with Figure 2As shown, a second matting plate 1252 is also provided inside the matting chamber 12. The second matting plate 1252 is a generally rectangular plate structure. Its first side is connected to a common side 121, and extends from the common side 121 into the matting chamber 12 towards the first matting plate 1251, forming an angle with it. Taking the angle between the sides of the second matting plate 1252 and the first matting plate 1251 facing the first through hole as an example, this angle can be any value between 0° and 180°, such as 60°. The connection point between the first side of the second matting plate 1252 and the common side 121 is located to the left of the first through hole. Furthermore, there is a gap between the end of the second matting plate 1252 away from the inner wall of the matting chamber 12 (the second side of the second matting plate 1252) and the first matting plate 1251. Thus, the first matting plate 1251 and the second matting plate 1252 are respectively positioned on the left and right sides of the first through hole, and the extension directions of the two matting plates are opposite to each other. In this way, after the excitation light is reflected by the first matting plate 1251, it will be reflected to the side of the second matting plate 1252 away from the first through hole, and then reflected multiple times by the second side 123, the first side 122, the common side 121, the second matting plate 1252, and the first matting plate 1251 of the matting chamber 12. The light that is reflected multiple times continues to attenuate until it is completely eliminated.

[0050] Obviously, the second matting plate 1252 can also be a curved plate, an arc plate, a wave plate, or other possible shapes, as long as it can reflect light and prevent light entering the matting chamber 12 from entering the detection chamber 11.

[0051] It should be noted that the second matting plate 1252 may not extend from the common side 121 toward the first matting plate 1251, but may extend inward from other sides of the matting chamber 12 (such as the first side 122, the second side 123, etc.). Without departing from the basic principles of this application, those skilled in the art can flexibly choose the specific arrangement of the second matting plate 1252 in the matting chamber 12 according to the specific application scenario, as long as it has an angle with the first matting plate 1251 and can reflect light to attenuate it.

[0052] In one possible implementation, the second matting plate 1252 and the common side 121 also have an angle between them, which is 40° to 60°. In this case, after the excitation light is reflected by the first matting plate 1251, the excitation light reflected into the matting chamber 12 can be effectively blocked within the matting chamber 12, preventing it from being reflected into the detection chamber 11, thereby better ensuring the accuracy of the detection device. Preferably, the angle between the second matting plate 1252 and the common side 121 is 45°.

[0053] In one possible implementation, the inner wall of the matting chamber 12, the first matting plate 1251, and the second matting plate 1252 are all coated with a light-absorbing material. This light-absorbing material can absorb and weaken the excitation light entering the matting chamber 12. The light-absorbing material can be a black water-based paint, laser-absorbing resin, carbon black, graphite, or other materials capable of absorbing excitation light. Thus, the light entering the matting chamber 12 is attenuated by reflection from the inner wall of the matting chamber 12, the first matting plate 1251, and the second matting plate 1252, while simultaneously being absorbed by the light-absorbing material coated thereon, thereby achieving faster absorption and elimination of the excitation light. It should be noted that the inner walls of all four sides of the matting chamber 12 can be completely coated with light-absorbing material, or only partially coated. Obviously, only one of the first matting plate 1251 and the second matting plate 1252 can be coated with light-absorbing material; alternatively, neither matting plate can be coated with light-absorbing material.

[0054] Based on the above configuration, the first matting plate 1251, the second matting plate 1252, the inner wall of the matting chamber 12, and the light-absorbing material coated thereon form a light trap within the matting chamber 12. This light trap absorbs the excitation light entering the matting chamber 12, eliminating the influence of this light on the fluorescence detection component 3 and ensuring the accuracy of the detection device.

[0055] It should be noted that the matting chamber 12 may contain only the first matting plate 1251 without the second matting plate 1252, or only the second matting plate 1252 without the first matting plate 1251. Alternatively, the matting chamber 12 may be coated only with a light-absorbing material without the first and second matting plates 1251. Clearly, the matting chamber 12 may also be formed without a light-absorbing material, instead using multiple matting plates to create a light trap. Without departing from the basic principles of this application, those skilled in the art can flexibly choose the specific formation method of the matting chamber 12 according to the specific application scenario, as long as the matting chamber 12 can absorb and eliminate the light entering it.

[0056] like Figures 1 to 5 As shown and in accordance with Figure 2As shown, the outer casing 1 is equipped with an air inlet 111 and an air outlet 141. An air duct is formed between the air inlet 111 and the air outlet 141 inside the outer casing 1. The air to be tested enters the outer casing 1 through the air inlet 111 and flows through the air duct at a relatively stable speed through the detection chamber 11. Inside the detection chamber 11, the fluorescence emitted by the air after being irradiated by the excitation light is detected by the fluorescent detection component 3. The air is then discharged through the air duct and the air outlet 141. This method allows for timely and accurate detection of the fluorescence emitted by microorganisms carried in the air after being irradiated by the excitation light, without the need for a complex optical path. This accurately determines the number of microorganisms carried in the air, eliminating the need for sampling and cultivation. The detection process is simple, fast, and time-saving, making it widely applicable to various scenarios. It should be noted that the "relatively stable speed" of the air flowing through the detection chamber 11 in this embodiment generally refers to a relatively constant speed of the air flowing through the detection chamber 11 during the detection process, meaning that the airflow rate through the detection chamber 11 per unit time is approximately constant.

[0057] Continue to refer to Figures 1 to 5 And in accordance with Figure 2 As shown in the diagram, an air inlet chamber 13 is also provided inside the outer casing 1. This air inlet chamber 13 is located to the left of the detection chamber 11 and includes two long sides and two short sides. The dimensions of the two long sides are approximately the same as the dimensions of the long sides of the detection chamber 11, and the dimensions of the two short sides are slightly smaller than the dimensions of the short sides of the detection chamber 11. The air inlet chamber 13 and the detection chamber 11 share a long side, which serves as both the right side of the air inlet chamber 13 and the left side of the detection chamber 11. A second through hole, which serves as a second ventilation structure 16, is provided on this long side. This second through hole is approximately rectangular and is located near the fluorescent detection component 3 (approximately near the lower end of the long side shared by the air inlet chamber 13 and the detection chamber 11). The air inlet chamber 13 communicates with the detection chamber 11 through this second through hole. The air inlet chamber 13 includes a body 131 and a cover 132. The body 131 is generally a box-shaped structure with an upward opening, formed by a bottom side, two long sides, and two short sides. The cover 132 covers the top of the body 131, and an air inlet 111 is disposed on the cover 132. The air inlet 111 is generally rectangular and is located on the cover 132 at a position away from the second through hole (approximately...). Figure 2 Located near the upper left side of the air inlet chamber 13, the air to be measured passes through this air inlet 111 at a relatively high speed, perpendicular to the bottom side (approximately). Figure 2The air enters the air inlet chamber 13 (perpendicular to the plane of the paper), which quickly blows away any residual air inside the outer casing 1, ensuring the accuracy of the current test. Simultaneously, since the air inlet 111 and the second through-hole are respectively located at the upper and lower ends near the long side of the air inlet chamber 13, the air to be tested, after entering the detection chamber 11 through the air inlet 111, flows from the upper left part to the lower right part of the detection chamber 11, and then enters the detection chamber 11 through the second through-hole. The fluorescence emitted after being irradiated by the fluorescent detection component 3 is then detected. In other words, the air to be tested, after entering the outer casing 1, first flows through the entire air inlet chamber 13 before entering the detection chamber 11. This process effectively reduces the impact of fluctuations in the flow rate or velocity of the air to be tested on the speed of the air flowing through the detection chamber 11, thereby effectively ensuring that the air to be tested flows through the detection chamber 11 at a roughly stable speed, ensuring the accuracy of the test. Obviously, the air inlet 111 can also be set at any other possible position on the cover 132. Of course, the air inlet 111 can also be set on the left side, upper side or lower side of the air inlet chamber 13.

[0058] like Figures 1 to 5 As shown and in accordance with Figure 2 As shown, an air outlet chamber 14 is also provided inside the outer casing 1. Its shape is roughly similar to that of the air inlet chamber 13 and the detection chamber 11. It includes two long sides and two short sides. The dimensions of the two long sides are roughly equivalent to the dimensions of the long sides of the detection chamber 11, and the dimensions of the two short sides are slightly smaller than the dimensions of the short sides of the detection chamber 11. It is formed by the two long sides and the two short sides to form a roughly rectangular structure. The air outlet chamber 14 shares a long side with the detection chamber 11. This long side serves as both the right side of the detection chamber 11 and the left side of the air outlet chamber 14. A third through hole, which serves as a third ventilation structure 17, is provided on this long side. The third through hole is roughly rectangular and is located near the fluorescent detection component 3 (roughly near the lower end of the right side of the detection chamber 11). The air outlet chamber 14 communicates with the detection chamber 11 through this third through hole. This arrangement symmetrically positions the second and third through holes on the two opposite long sides of the detection chamber 11, with both holes positioned close to the fluorescent detection component 3. An air outlet 141 is located on the air outlet chamber 14, and a grille structure is provided at the outlet 141. The outlet 141 is positioned away from the third through hole (approximately near the upper side of the air outlet chamber 14). Thus, during operation of the detection device, the air to be tested passes through the air inlet 111, which is farther from the second through hole (approximately located near the upper side of the air outlet chamber 14). Figure 2 The air enters the air inlet chamber 13 from the upper part of the middle section. After diffusing and flowing within the air inlet chamber 13, it passes through the second through hole (approximately located in the upper part of the middle section). Figure 2The air enters the detection chamber 11 from a lower position (in the middle). After being irradiated by excitation light within the detection chamber 11, the microorganisms it carries emit fluorescence. This fluorescence is captured and detected by the fluorescence detection component 3. The air after detection enters the outlet chamber 14 directly through the third through-hole located opposite the second through-hole, and then flows through the outlet 141 (approximately located in...). Figure 2 The air is discharged to the external environment from the upper part of the chamber. During this process, the air to be tested enters the inlet chamber 13 through the inlet, fills the inlet chamber 13, and then enters the detection chamber 11, where its flow rate slows down. After detection, the air enters the outlet chamber 14, also fills the outlet chamber 14, and then exits through the outlet 141. This means that both the inlet 111 and outlet 141 of the detection chamber 11 are always filled with the air to be tested, ensuring the stability of the airflow through the detection chamber 11. This ensures that the air to be tested passes through the detection chamber 11 at a relatively stable speed, thus ensuring the accuracy of the detection. Furthermore, the air to be tested entering the detection chamber 11 through the second through-hole can be quickly discharged through the corresponding third through-hole after being detected, without lingering in the detection chamber 11. This effectively avoids interference with the detection results caused by factors such as backflow of the air to be tested.

[0059] like Figures 1 to 5 As shown and in accordance with Figure 2 As shown in the diagram, the outer casing 1 includes a first part 18 and a second part 19. The first part 18 is generally a box-shaped structure with an opening on one side, and multiple partitions 110 are disposed therein, dividing the interior of the first part 18 into four different areas. The second part 19 is generally a plate-shaped structure that matches the top of the first part 18. When the first part 18 and the second part 19 are fastened together, the bottom of the second part 19 abuts against the top of each partition 110 disposed in the first part 18, thereby forming four chambers within the outer casing 1: a detection chamber 11, an matting chamber 12, an air inlet chamber 13, and an air outlet chamber 14. Each partition 110 constitutes the side of each chamber. The main body 131 of the air inlet chamber 13 is composed of two sides of the first part 18, a part of the bottom side, a vertically distributed partition 110, and a horizontally distributed partition 110. The cover 132 is the leftmost part of the second part 19 corresponding to the air inlet chamber 13. The air inlet 111 is located in the second part 19 corresponding to the air inlet chamber 13, and the air outlet 141 is located in the bottom side of the first part 18 corresponding to the air outlet chamber 14. This is equivalent to placing the air inlet 111 at the top of the air inlet chamber 13 and the air outlet 141 at the bottom of the air outlet chamber 14. Figure 2As shown in the diagram, the air to be tested enters the upper region of the air inlet chamber 13 perpendicular to the plane of the paper, then flows downward to the second through-hole located at its lower part. Through the second through-hole, it enters the detection chamber 11, is irradiated by excitation light, and is detected by the fluorescent detection component 3. It then exits through the third through-hole opposite the second through-hole into the lower region of the air outlet chamber 14, and then flows upward to the air outlet 141 for discharge. In other words, after entering the outer casing 1 through the air inlet 111, the air to be tested flows along a roughly U-shaped airflow path to the air outlet 141. The detection chamber 11 is located at the lowest point of the U-shaped airflow path, where the velocity of the air to be tested is relatively constant, thus better ensuring the accuracy of the detection.

[0060] Continue to refer to Figures 1 to 5 And in accordance with Figure 2 As shown in the diagram, the upper side of the extinction chamber 12 is formed by the shared side 121 with the detection chamber 11 and the lower side of the air inlet chamber 13. The second side 123 and the third side 124 are flush with the left side of the air inlet chamber 13 and the right side of the detection chamber 11, respectively. The first side 122 is flush with the lower side of the air outlet chamber 14. This arrangement ensures sufficient space within the extinction chamber 12 to allow light to be repeatedly reflected within it, while also allowing for the placement of sufficient light-absorbing material to absorb light, thereby better eliminating light entering the chamber. Furthermore, this arrangement ensures the overall aesthetics and neatness of the detection device. Clearly, the width of the extinction chamber 12 (approximately...) Figure 2 The dimension of the first side 122 in the horizontal direction can also be related to the width of the detection chamber (approximately). Figure 2 The width of the detection chamber (in the horizontal direction) is approximately equal to, or located between, the sum of, the widths of the detection chamber and the air inlet chamber, or greater than, the sum of, the widths of the air inlet chamber and the detection chamber, etc. Alternatively, the second side 123 can be located to the left or right of the left side of the air inlet chamber 13, or the third side 124 can be located to the left or right of the right side of the detection chamber 11, or the first side 122 can be located above or below the lower side of the air outlet chamber 14.

[0061] It should be noted that the air inlet 111 may not be located far from the second through hole, but may be located at other positions on the left side of the air inlet chamber 13, or on the upper or lower side of the air inlet chamber 13, or other possible positions. Similarly, the air outlet 141 may not be located far from the third through hole, but may be located at the middle of the bottom side of the air outlet chamber 14, or on the upper, right, or lower side of the air outlet chamber 14, or other possible positions. The long sides of the air inlet chamber 13, the detection chamber 11, and the air outlet chamber 14 are... Figure 2 The sides and short sides of each chamber extending vertically are Figure 2 The sides and bottom sides of each chamber extending horizontally are Figure 2 The first part 18 corresponds to the side of each chamber parallel to the plane of the paper. It should also be noted that the second and third through holes can be positioned differently, one closer to the fluorescence detection component 3 and the other further away. Without departing from the basic principles of this application, those skilled in the art can flexibly choose the specific locations of the air inlet 111, air outlet 141, second through hole, and third through hole according to the specific application scenario, as long as it ensures that the air to be tested can pass through the detection chamber 11 at a roughly stable speed.

[0062] It should be noted that the detection chamber 11 and the air inlet chamber 13 may not share a single side, and the detection chamber 11 and the air outlet chamber 14 may not share a single side. In this case, the second ventilation structure 16 may be configured as a hollow tubular structure connecting the detection chamber 11 and the air inlet chamber 13, and the third ventilation structure 17 may be configured as a hollow tubular structure connecting the detection chamber 11 and the air outlet chamber 14.

[0063] It should be noted that the housing 1 may not have an air inlet chamber 13 or an air outlet chamber 14. Alternatively, the housing 1 may only have a detection chamber 11, without the air inlet chamber 13 and the air outlet chamber 14. In this case, the air inlet 111 and the air outlet 141 are located in the detection chamber 11. Without departing from the basic principles of this application, those skilled in the art can flexibly choose the specific structure within the housing 1 according to the specific application scenario, as long as it ensures that the air to be tested can pass through the detection chamber 11 at a roughly stable speed to achieve bacterial detection.

[0064] like Figures 1 to 5 As shown and in accordance with Figure 2As shown in the diagram, a flow guide 142 is also provided inside the air outlet chamber 14. This flow guide 142 is located inside the air outlet chamber 14 corresponding to the third through hole, and is approximately a curved panel. The curved panel extends from the left side of the air outlet chamber 14 near the third through hole towards the lower side of the air outlet chamber 14, forming an approximately n-shaped structure with the left side of the air outlet chamber 14. The lower left corner of the air outlet chamber 14 is curved. Under the combined action of this curved surface and the curved panel, the airflow velocity from the third through hole can be slowed down and stably guided to the lower part of the air outlet chamber 14, and then it can travel around to the upper part of the air outlet chamber 14 and be discharged through the air outlet 141. By using the flow guide component 142, the air to be tested, after flowing out of the third through hole, will not be directly discharged from the air outlet 141. Instead, it will circulate within the air outlet chamber 14 before being discharged from the outlet. This increases the residence time of the air to be tested within the air outlet chamber 14, preventing the airflow from affecting the speed of the air to be tested in the detection chamber 11 due to excessively fast airflow. This ensures that the air to be tested flows through the detection chamber 11 at a relatively stable speed, resulting in a more constant volume of air passing through the detection chamber 11 per unit time. Consequently, the bacterial content detected by the fluorescent detection component 3 is more stable, thus better ensuring the accuracy of the detection. Furthermore, the curved panel design prevents the air to be tested that has already flowed out of the detection chamber 11 from flowing back into the detection chamber 11 and affecting the detection of the fluorescent detection component 3. It also slows down the flow rate of the air flowing out of the third through hole, further ensuring that the air to be tested flows through the detection chamber 11 at a more stable speed. Obviously, it is also possible to position the air outlet 141 near its lower side, and guide the air coming out of the third through hole to the upper part of the air outlet chamber 14 through the flow guide member.

[0065] It should be noted that the flow guiding member 142 can also be configured as an arc-shaped plate, a wave-shaped plate, or other possible shapes. Obviously, the flow guiding member 142 can also be configured such that only the portion aligned with the third through hole is curved, while the rest is flat. Of course, the flow guiding member 142 can also be composed of multiple flat plates. Without departing from the basic principles of this application, those skilled in the art can flexibly choose the specific configuration of the flow guiding member 142 according to the specific application scenario, as long as the flow guiding member 142 can guide the air flowing from the third through hole to an area in the air outlet chamber 14 far from the outlet, allowing the air to be tested to flow through the detection chamber 11 at a relatively stable flow rate. Of course, the flow guiding member 142 may not be provided in the air outlet chamber 14.

[0066] like Figures 1 to 5As shown, the detection device also includes a power supply module 4, which is a circuit board, roughly rectangular in shape, connected to an external power source, for supplying power to the excitation light source 2 and the fluorescence detection component 3. An annular protrusion 181 is formed on the top of the first part 18. The circuit board is adapted to the annular protrusion 181. When the circuit board is placed inside the housing 1, the portion of the circuit board near its outer edge abuts against the annular protrusion 181, thus at least a portion of the circuit board is located within the detection chamber 11. In this invention, the excitation light source 2 and the fluorescence detection component 3 can be mounted on the circuit board at positions corresponding to the detection chamber 11 via onboard or plug-in methods. This integrates the circuit board, the excitation light source 2, and the fluorescence detection component 3 together, and ensures that the excitation light source 2 and the fluorescence detection component 3 are aligned along... Figure 2 The vertical orientation shown is within the detection chamber 11. This ensures the operation of the detection device while simplifying its internal structure and avoiding complex optical path design and application. To ensure that the air to be tested can enter the air inlet chamber 13 through the inlet, the circuit board has a perforation at the position corresponding to the inlet, with the perforation size being similar to the inlet. During assembly, the excitation light source 2 and the fluorescence detection component 3 are aligned with the portion of the first part 18 corresponding to the detection chamber 11, the circuit board is snapped onto the annular boss 181, and then the second part 19 is placed on the outside of the circuit board, thus completing the assembly of the detection device. Obviously, the excitation light source 2 and the fluorescence detection component 3 can also be electrically connected to the circuit board in other ways. Obviously, the circuit board can also be directly placed within the detection chamber 11. Of course, the power supply module 4 can also be configured in other ways, such as a rechargeable battery or dry cell battery. Those skilled in the art can flexibly design the specific configuration of the power supply module 4, as long as it can supply power to the excitation light source 2 and the fluorescence detection component 3.

[0067] In summary, in the preferred embodiment of this invention, by setting up the excitation light source 2 and the fluorescence detection component 3, and by placing the excitation light source 2 and the fluorescence detection component 3 within the detection chamber 11, the microbial content in the air to be tested can be accurately detected without sampling, cultivation, or setting up a complex optical path. This method is simple, fast, and time-saving, and can be widely applied to various scenarios. By setting up an extinction component 125 in the extinction chamber 12 connected to the detection chamber 11, and coating the inner wall of the extinction chamber 12 and the extinction component 125 with a light-absorbing material, excess excitation light and stray light generated during the excitation process can be eliminated, ensuring the accuracy of the detection device. By setting the air inlet 111 in the air inlet chamber 13 away from the fluorescent detection component 3, setting the air outlet 141 in the air outlet chamber 14 away from the fluorescent detection component 3, setting the second through hole and the third through hole opposite each other in a position close to the fluorescent detection component 3, and setting a flow guide component in the air outlet chamber 14 corresponding to the position of the third through hole, it is possible to ensure that the air to be tested flows through the detection chamber 11 at a roughly stable speed, thereby better ensuring the accuracy of the detection device.

[0068] In addition, this utility model also provides an air conditioner equipped with the detection device described in any of the foregoing solutions.

[0069] It should be noted that this air conditioner has all the technical effects of the aforementioned detection device, which will not be repeated here.

[0070] Of course, the alternative implementation methods described above, as well as the alternative implementation methods and preferred implementation methods, can be used in combination to create new implementation methods that are suitable for more specific application scenarios.

[0071] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims of this invention, any of the claimed embodiments can be used in any combination.

[0072] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A detection device, characterized in that, The detection device includes a housing (1), an excitation light source (2), and a fluorescence detection component (3). A detection chamber (11) is provided inside the housing (1). The excitation light source (2) and the fluorescence detection component (3) are located inside the detection chamber (11). The excitation light source (2) is configured to emit excitation light after being powered on. The excitation light can excite the microorganisms carried in the air to be tested to emit fluorescence. The fluorescence detection component (3) is configured to detect the fluorescence emitted by the microorganisms carried in the air to be tested after being irradiated by the excitation light after being powered on, and output the detection result. An air inlet (111) and an air outlet (141) are provided on the housing (1). An air duct is formed between the air inlet (111) and the air outlet (141) inside the housing (1). The air to be tested flows through the detection chamber (11) at a roughly stable speed via the air duct. An air inlet chamber (13) is also provided inside the outer shell (1), and an air inlet (111) is provided in the air inlet chamber (13). A second ventilation structure (16) is provided between the air inlet chamber (13) and the detection chamber (11). The air inlet chamber (13) is connected to the detection chamber (11) through the second ventilation structure (16). The outer shell (1) is further provided with an air outlet chamber (14), and the air outlet (141) is provided in the air outlet chamber (14). The air outlet chamber (14) and the detection chamber (11) are connected to each other.

2. The detection device according to claim 1, characterized in that, The air inlet (111) is located on the air inlet chamber (13) away from the second ventilation structure (16), and the fluorescent detection component (3) is located in the detection chamber (11) close to the second ventilation structure (16).

3. The detection device according to claim 2, characterized in that, The air inlet chamber (13) includes a body (131) and a cover (132) covering the body (131). The second ventilation structure (16) is disposed between the body (131) and the detection chamber (11), and the air inlet (111) is disposed on the cover (132).

4. The detection device according to claim 1, characterized in that, A third ventilation structure (17) is provided between the detection chamber (11) and the air outlet chamber (14). The air outlet chamber (14) is connected to the detection chamber (11) through the third ventilation structure (17). The third ventilation structure (17) is located near the fluorescent detection component (3).

5. The detection device according to claim 4, characterized in that, The air outlet chamber (14) has a flow guide member (142) located at a position corresponding to the third ventilation structure (17). The flow guide member (142) is configured to guide the air flowing out through the third ventilation structure (17) to an area in the air outlet chamber (14) away from the air outlet (141).

6. The detection device according to claim 5, characterized in that, The flow guide member (142) is at least partially aligned with the third ventilation structure (17) and is configured as a curved surface.

7. The detection device according to any one of claims 1 to 6, characterized in that, The detection device also includes a power supply module (4), which is disposed inside the housing (1) and is electrically connected to the excitation light source (2) and the fluorescence detection component (3).

8. An air conditioner, characterized in that, The air conditioner is equipped with a detection device as described in any one of claims 1 to 7.

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