CN219737191U - Air duct of PM2.5 sensor - Google Patents
Air duct of PM2.5 sensor Download PDFInfo
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- CN219737191U CN219737191U CN202223307728.8U CN202223307728U CN219737191U CN 219737191 U CN219737191 U CN 219737191U CN 202223307728 U CN202223307728 U CN 202223307728U CN 219737191 U CN219737191 U CN 219737191U
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- air duct
- air
- wind channel
- fan
- detector
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- 238000001514 detection method Methods 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims description 17
- 239000006260 foam Substances 0.000 claims description 10
- 239000000428 dust Substances 0.000 abstract description 13
- 230000008021 deposition Effects 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Air Conditioning Control Device (AREA)
Abstract
The utility model relates to the technical field of environmental protection equipment, and discloses an air duct of a PM2.5 sensor, which comprises an upper shell and a lower shell, wherein an air inlet is formed in the upper end of the upper shell, an air duct is formed in the lower end of the air inlet, a spacious air duct and a narrow air duct are fixedly arranged on the inner side of the lower shell, a mounting groove is fixedly arranged above the lower shell, a fixing frame is fixedly arranged in the mounting groove, a detector is arranged on the inner side of the fixing frame, a detection air duct is formed in the side face of the detector, the air inlet formed in the upper end of the upper shell is led into the inner part through the arranged air duct, the detection air duct is connected with the side face of the detector through the spacious air duct, the rear end of the narrow air duct is detected through the detector, the rear end of the detection air duct drives internal air to move through a fan, when a large amount of air is sucked from the spacious air duct to the narrow air duct through the fan, the pressure of the narrow air duct is increased, the air flow speed is increased, the dust deposition is reduced, and the detector is prevented from being influenced by dust deposition.
Description
Technical Field
The utility model relates to the technical field of environmental protection equipment, in particular to an air duct of a PM2.5 sensor.
Background
The PM2.5 sensor is usually used for detecting the concentration of solid particles in the outside, which can detect suspended particles below 2.5 microns in air in unit volume density, and the proportion of PM2.5 particles in the air during detection is checked, but the detection precision of the sensor needs stable air blowing to perform high-precision detection, and the detection probes of most PM2.5 sensors are connected with the inside of the air inlet duct and are used for detecting PM2,5 on the back of blown air with certain precision.
The wind channel of present PM2,5 sensor, through the air inlet channel, suction type air discharge fan and PM2.5 probe are constituteed, and ordinary wind channel is long straight type air inlet channel and has the air inlet channel of return bend when using, can lead to the condition emergence of pipeline inside deposition when carrying out long-term detection, opens suction type air discharge fan and can cause when the deposition, and the air duct rear end air discharge fan is to the inside suction of deposition in the air pipe leads to the accuracy of dust influence PM2.5 probe when detecting.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides an air duct of a PM2.5 sensor, which has the advantage of increasing the pressure in a pipe.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an air duct of PM2.5 sensor, includes casing and lower casing, the air inlet has been seted up to the casing upper end, the air duct has been seted up to the air inlet lower extreme, the inboard fixed mounting of casing has spacious wind channel and narrow wind channel down, casing top fixed mounting has the mounting groove down, fixed mounting has the mount in the mounting groove, the mount inboard is provided with the detector, the detection wind channel has been seted up to the detector side, will open the air inlet of upper end in the casing upper end through the wind channel that sets up and introduce the inside, makes it pass through spacious wind channel in the detection wind channel that passes through narrow wind channel, and the detection wind channel rear end is connected the detector side makes it detect through the detector, and the detection wind channel rear end passes through the fan and drives inside air motion, and the pressure increases in narrow wind channel when a large amount of air is inhaled from spacious wind channel to narrow wind channel by the fan, makes the air velocity of flow increase reduce the condition emergence of deposition, avoids the detector to receive the influence of deposition.
Preferably, the detector upper end fixed mounting has the circuit board support, fixed slot has been seted up to lower casing upper end fixed mounting has the fan, fan upper end fixed mounting has the fan shield, lower casing both sides fixed mounting has the fixed plate, narrow wind channel and spacious wind channel upper end fixed mounting have rubber seal pad, the air exit has been seted up to upper casing upper end fixed mounting.
Preferably, the wind channel runs through and sets up between air inlet and spacious wind channel, spacious wind channel is connected with narrow wind channel, narrow wind channel is connected with detection wind channel, detection wind channel rear end links to each other with the fixed slot, the mount front end is installed in the fixed slot upper end, mount rear end fixed mounting is in the mounting groove upper end, circuit board support upper end is connected with the circuit board, makes the pressure in the wind channel produce the condition that changes and makes the velocity of flow increase reduce the deposition through spacious wind channel and narrow wind channel and takes place, through detector upper end fixed mounting's circuit board support, makes the detector be fixed in the circuit board lower extreme, dismantles when being convenient for overhaul.
Preferably, the circuit board support is installed in rubber seal pad upper end, the fan passes through screw fixed connection in the mount upper end, the fan shield passes through screw fixed connection in the fan upper end, avoids inhaled air to carry dust entering circuit board through the rubber seal pad that sets up, separates spacious wind channel, narrow wind channel, detection wind channel and fan below and the one side of circuit board contact through rubber seal pad, avoids the dust to carry out the circuit board and leads to the circuit board to damage.
Preferably, the upper end of the upper shell is fixedly provided with sealing foam, the sealing foam is arranged outside the air inlet, the air outlet is arranged at the upper end of the fan shielding cover, the upper shell is fixedly connected with the upper end of the lower shell through screws, and the sealing foam is stuck to a pipeline to be detected or a position to be detected, so that detection air is adsorbed by the fan, and the air enters the air inlet for detection.
Preferably, the fixing plate is diagonally arranged on the lower shell, and the detection machine can be fixed at a position to be monitored through the fixing plate for long-time monitoring.
The beneficial effects are that:
1. this wind channel of PM2.5 sensor, the wind channel that will set up in the air inlet of last casing upper end through setting up is leading-in inside, make it pass through spacious wind channel and pass through narrow wind channel, the detection wind channel of detector side is connected to narrow wind channel rear end makes it detect through the detector, it drives inside air movement to detect the wind channel rear end through the fan, narrow wind channel internal pressure increase when a large amount of air is inhaled from spacious wind channel to narrow wind channel by the fan, the condition that makes the air velocity of flow increase reduce the deposition takes place, avoid the detector to receive the influence of deposition.
2. This air duct of PM2.5 sensor avoids inhaled air to carry dust and get into the circuit board through the rubber seal pad that sets up, separates spacious wind channel, narrow wind channel, detection wind channel and fan below and the one side of circuit board contact through the rubber seal pad, avoids the dust to carry out the circuit board and leads to the circuit board to damage, pastes the pipeline that needs to detect or the position that needs to detect through sealed bubble cotton, makes the detection air adsorb through the fan and makes the air get into through the air inlet and detect.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an air duct junction of a PM2.5 sensor of the present utility model;
FIG. 2 is a schematic diagram of a wind channel detector of a PM2.5 sensor according to the present utility model;
FIG. 3 is a schematic diagram of the internal structure of an air duct of the PM2.5 sensor of the utility model;
FIG. 4 is a schematic diagram of a wind channel detection wind channel structure of a PM2.5 sensor according to the present utility model;
FIG. 5 is a schematic diagram of an internal air duct structure of an air duct of a PM2.5 sensor according to the present utility model;
fig. 6 is a schematic diagram of an air duct fixing frame of the PM2.5 sensor according to the present utility model.
In the figure: 1. an upper housing; 2. sealing foam; 3. a lower housing; 4. an air inlet; 5. an air outlet; 6. an air duct; 7. a fan shield; 8. a blower; 9. a circuit board bracket; 10. a detector; 11. a circuit board; 12. detecting an air duct; 13. a spacious air duct; 14. a narrow air duct; 15. a mounting groove; 16. a fixing frame; 17. a fixing groove; 18. a fixing plate; 19. and a rubber gasket.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-6, an air duct of a PM2.5 sensor comprises an upper housing 1 and a lower housing 3, wherein an air inlet 4 is formed at the upper end of the upper housing 1, an air duct 6 is formed at the lower end of the air inlet 4, a spacious air duct 13 and a narrow air duct 14 are fixedly arranged at the inner side of the lower housing 3, a mounting groove 15 is fixedly arranged above the lower housing 3, a fixing frame 16 is fixedly arranged in the mounting groove 15, a detector 10 is arranged at the inner side of the fixing frame 16, a detection air duct 12 is formed at the side surface of the detector 10, the air inlet 4 formed at the upper end of the upper housing 1 is led into the interior through the arranged air duct 6, the air is detected through the spacious air duct 14 by the detection air duct 12 connected with the side surface of the detector 10 at the rear end of the narrow air duct 14 through the narrow air duct 14, the rear end of the detection air duct 12 drives internal air to move through a fan 8, when a large amount of air is sucked from the wide open air duct 13 to the narrow air duct 14 by the fan 8, the pressure in the narrow air duct 14 is increased, the air flow speed is increased, the dust accumulation is reduced, the detector 10 is prevented from being influenced by the dust accumulation, the circuit board bracket 9 is fixedly arranged at the upper end of the detector 10, the fixing groove 17 is fixedly arranged at the upper end of the lower shell 3, the fan 8 is fixedly arranged at the upper end of the fixing frame 16, the fan shielding cover 7 is fixedly arranged at the upper end of the fan 8, the fixing plates 18 are fixedly arranged at the two sides of the lower shell 3, the rubber sealing gaskets 19 are fixedly arranged at the upper ends of the narrow air duct 14 and the wide air duct 13, the exhaust outlet 5 is fixedly arranged at the upper end of the upper shell 1, the air duct 6 is penetratingly arranged between the air inlet 4 and the wide air duct 13, the wide air duct 13 is connected with the narrow air duct 14, the narrow air duct 14 is connected with the detection air duct 12, the detection wind channel 12 rear end links to each other with fixed slot 17, mount 16 front end is installed in fixed slot 17 upper end, mount 16 rear end fixed mounting is in mounting groove 15 upper end, circuit board support 9 upper end is connected with circuit board 11, makes the pressure in the wind channel change through spacious wind channel 13 and narrow wind channel 14 and makes the velocity of flow increase reduce the condition emergence of deposition, through detector 10 upper end fixed mounting's circuit board support 9, makes detector 10 be fixed in circuit board 11 lower extreme, dismantles when being convenient for overhaul.
Working principle: when in detection, the air inlet 4 arranged at the front end of the upper shell 1 is aligned with a position to be detected to open the internal fan 8 so as to enable the air to be extracted, the air enters the air channel 6 from the air inlet 4, the inner side of the lower shell 3 is fixedly provided with a spacious air channel 13 and a narrow air channel 14, the lower end of the air channel 6 is connected with the spacious air channel 13, the inner side of the lower shell 3 is provided with a mounting groove 15 and a fixing groove 17, the rear end of a fixing frame 16 is arranged in the mounting groove 15, the front end of the fixing frame 16 is fixedly arranged in the fixing groove 17, the fixing frame 16 is used for fixing the fan 8 and the detector 10, the detector 10 is arranged in the fixing frame 16, the side surface of the detector 10 is provided with a detection air channel 12, the detection air channel 12 is connected with the narrow air channel 14 so as to enable the air sucked by the fan 8 to flow into the spacious air channel 13 after entering the air channel 6 from the air inlet 4, when a large amount of air flows into the narrow air duct 14 from the wide air duct 13, the air is sucked inwards by the fan 8 to enable a large amount of air to be extruded to the narrow channel, so that the pressure in the narrow air duct 14 is increased, the phenomenon of dust accumulation is avoided, at the moment, the air is sucked into the detection air duct 12 from the narrow air duct 14 by the fan 8, the detector 10 collects the information of the content of solid particles in the air, the detected air sucked out through the detection air duct 12 is discharged from the air outlet 5 formed at the upper end of the upper shell 1, the upper end of the detector 10 is fixedly provided with the circuit board bracket 9 for fixing the circuit board 11, the rubber sealing gasket 19 arranged at the lower end of the circuit board bracket 9 is used for separating the detection air duct 12, the wide air duct 13 and the narrow air duct 14 formed at the side surface of the detector 10 from the circuit board 11 to prevent the circuit board 11, preventing dust carried in the air sucked by the fan 8 in the wide air duct 13 and the narrow air duct 14 from entering the circuit board 11 to cause short circuit.
Example two
Referring to fig. 1-6, on the basis of the first embodiment, the circuit board support 9 is further installed at the upper end of the rubber sealing pad 19, the fan 8 is fixedly connected to the upper end of the fixing frame 16 through screws, the fan shielding cover 7 is fixedly connected to the upper end of the fan 8 through screws, the air to be detected is prevented from carrying dust into the circuit board 11 through the rubber sealing pad 19, the side, which is in contact with the circuit board 11, of the spacious air duct 13, the narrow air duct 14, the detection air duct 12 and the lower part of the fan 8 is separated from the circuit board 11 through the rubber sealing pad 19, the circuit board 11 is prevented from being damaged by dust, the sealing foam 2 is fixedly installed at the upper end of the upper casing 1, the sealing foam 2 is arranged at the outer side of the air inlet 4, the air outlet 5 is arranged at the upper end of the fan shielding cover 7, the upper casing 1 is fixedly connected to the upper end of the lower casing 3 through screws, the sealing foam 2 is adhered to a pipeline to be detected or a position to be detected, the detection air is prevented from being absorbed by the fan 8, the detection air is prevented from entering the circuit board 11 through the air inlet 4, the fixing board 18 is diagonally arranged on the lower casing 3, and the circuit board 11 is prevented from being damaged, the upper casing 11 is fixedly arranged at the side of the upper casing 1, and the upper casing is required to be monitored for a long time.
Working principle: the fan shielding cover 7 is fixedly arranged at the upper end of the fan 8 and used for protecting the fan 8 and fixing the fan secondarily, the fan 8 which is caused by vibration after long-time use is prevented from falling off, the sealing foam 2 arranged at the upper end of the upper shell 1 is used for enabling the upper shell 1 to be clung to a detected pipeline to enable suction force of the pipeline to be stable, the external air is prevented from being synchronously sucked into the air duct 6 to cause inaccurate testing precision, and the fixing plates 18 fixedly arranged on two sides of the lower shell 3 are used for being fixed on a wall body or the positions which need to be detected are used for long-time detection and fixing.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an wind channel of PM2.5 sensor, includes casing (1) and lower casing (3), its characterized in that: the utility model discloses a novel air conditioner, including casing (1) and detector, including casing (3), air inlet (4) have been seted up to last casing (1) upper end, wind channel (6) have been seted up to air inlet (4) lower extreme, casing (3) inboard fixed mounting has spacious wind channel (13) and narrow wind channel (14) down, casing (3) top fixed mounting has mounting groove (15) down, fixed mounting has mount (16) in mounting groove (15), mount (16) inboard is provided with detector (10), detection wind channel (12) have been seted up to detector (10) side.
2. The air duct of a PM2.5 sensor according to claim 1, which is characterized in that: the detector is characterized in that a circuit board support (9) is fixedly arranged at the upper end of the detector (10), a fixing groove (17) is fixedly formed in the upper end of the lower shell (3), a fan (8) is fixedly arranged at the upper end of the fixing frame (16), a fan shielding cover (7) is fixedly arranged at the upper end of the fan (8), fixing plates (18) are fixedly arranged at the two sides of the lower shell (3), rubber sealing gaskets (19) are fixedly arranged at the upper ends of the narrow air duct (14) and the wide air duct (13), and an air outlet (5) is fixedly formed in the upper end of the upper shell (1).
3. The air duct of a PM2.5 sensor according to claim 2, which is characterized in that: the utility model discloses a circuit board, including air inlet (4), air duct (6), mounting bracket (16), circuit board support (9) upper end, air duct (6) run through to set up between air inlet (4) and spacious wind channel (13), spacious wind channel (13) want to be connected with narrow wind channel (14), narrow wind channel (14) are connected with detection wind channel (12), detection wind channel (12) rear end links to each other with fixed slot (17), mount (16) front end is installed in fixed slot (17) upper end, mount (16) rear end fixed mounting is in mounting groove (15) upper end, circuit board support (9) upper end is connected with circuit board (11).
4. The air duct of a PM2.5 sensor according to claim 2, which is characterized in that: the circuit board support (9) is arranged at the upper end of the rubber sealing gasket (19), the fan (8) is fixedly connected to the upper end of the fixing frame (16) through screws, and the fan shielding cover (7) is fixedly connected to the upper end of the fan (8) through screws.
5. The air duct of a PM2.5 sensor according to claim 2, which is characterized in that: the upper end of the upper shell (1) is fixedly provided with sealing foam (2), the sealing foam (2) is arranged outside the air inlet (4), the air outlet (5) is arranged at the upper end of the fan shielding cover (7), and the upper shell (1) is fixedly connected with the upper end of the lower shell (3) through screws.
6. The air duct of a PM2.5 sensor according to claim 2, which is characterized in that: the fixing plate (18) is diagonally arranged on the lower shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223307728.8U CN219737191U (en) | 2022-12-10 | 2022-12-10 | Air duct of PM2.5 sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223307728.8U CN219737191U (en) | 2022-12-10 | 2022-12-10 | Air duct of PM2.5 sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219737191U true CN219737191U (en) | 2023-09-22 |
Family
ID=88050934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223307728.8U Active CN219737191U (en) | 2022-12-10 | 2022-12-10 | Air duct of PM2.5 sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219737191U (en) |
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2022
- 2022-12-10 CN CN202223307728.8U patent/CN219737191U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 2298, Central Avenue, the Taihu Lake Street, Changxing County, Huzhou City, Zhejiang Province, 313100 Patentee after: Xinli Automotive Electronics (Zhejiang) Co.,Ltd. Country or region after: China Address before: 318020 No. 128 Xinjiang Road, Chengjiang Street, Huangyan District, Taizhou City, Zhejiang Province Patentee before: Xinli automotive electronics (Taizhou) Co.,Ltd. Country or region before: China |