CN113702597B - Indoor air quality detector and detection method thereof - Google Patents
Indoor air quality detector and detection method thereof Download PDFInfo
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- CN113702597B CN113702597B CN202111111910.3A CN202111111910A CN113702597B CN 113702597 B CN113702597 B CN 113702597B CN 202111111910 A CN202111111910 A CN 202111111910A CN 113702597 B CN113702597 B CN 113702597B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention relates to the field of air quality detection, in particular to an indoor air quality detector and a detection method thereof, wherein the indoor air quality detector comprises a detector main shell, a detector side panel, an air suction pump, an air inlet cylinder, a display screen and the like; the detector main shell right side fixed mounting has the detector side board, and detector main shell left side is provided with the aspirator pump, fixedly connected with air inlet tube on the aspirator pump, and detector main shell rear side top fixed mounting has the display screen. Through the light detection receiver, the light detection receiver receives particles in the air and reflects the flash light after being irradiated, and the light detection receiver measures the content of the particles through the frequency and the duration of scattered light, so that the air quality index is known.
Description
Technical Field
The invention relates to the field of air quality detection, in particular to an indoor air quality detector and a detection method thereof.
Background
With the development of economy and the improvement of living tastes, more and more people begin to pay attention to health and environmental protection. After new home decoration is repaired, except for basic ventilation and measures such as formaldehyde plants, carbon bags and the like, an air quality detector is generally adopted to comprehensively detect air quality conditions, the air quality detector is an instrument capable of detecting formaldehyde, PM2.5 and temperature and humidity in air in real time, and the concentration of gas and inhalable particles can be accurately detected through an internal air detection sensor and an air quality index is calculated.
The existing gas detector is usually a composite product, when equipment fails, all gas units cannot be detected and must be returned to a factory for maintenance, so that a user can select to use various portable gas detectors, mainly because the portable gas detector is convenient to use, the use frequency is low, and the use is not influenced if maintenance and factory returning maintenance occur, but the single machine power consumption is large, the charging and discharging time of a battery used by a common portable instrument can be relatively frequent, the resistance is greatly influenced by temperature, the inherent temperature coefficient enables the portable instrument not to work in a very wide temperature range, and the detection error is large and the detection result is influenced because of moisture contained in a moisture sensing material.
Disclosure of Invention
The invention aims to provide an indoor air quality detector and a detection method thereof, which can detect indoor air quality, can filter and separate particles in air, can detect larger particle content in air, can reduce errors caused by moisture contained in a moisture sensing material and are convenient to clean the particles, so as to solve the problems that in the prior art, all gas unit detection cannot be detected when equipment fails in a composite product, and a portable instrument has large detection error caused by moisture contained in the moisture sensing material.
The technical implementation scheme of the invention is as follows: an indoor air quality detector and a detection method thereof, comprising a detector main shell, and further comprising:
The detector side panel is fixedly arranged on the right side of the detector main shell;
the air suction pump is arranged on the left side of the main shell of the detector and is used for sucking indoor air into the equipment for detection;
The air inlet cylinder is fixedly connected with the air suction pump and is used for conveying air;
The display screen is fixedly arranged above the rear side of the main shell of the detector and is used for displaying detection data;
the fixed ventilation disk is arranged below the side panel of the detector and used for exhausting air in the main shell of the detector, and is rotationally connected with a four-angle sealing disk which is used for blocking the fixed ventilation disk;
A top supporting plate is fixedly arranged above the inner side of the main shell of the detector, a storage battery is fixedly arranged in the top supporting plate, and the storage battery is used for supplying power to equipment;
The light scattering detection technology assembly is positioned in the main shell of the detector and is used for detecting the content of particles in the air;
The friction electrostatic detection technology assembly is arranged on the light scattering detection technology assembly and is used for detecting particles in the air;
particle filter component, the last slidingtype of detector main casing is connected with particle filter component, and particle filter component is used for carrying out filtering separation to tiny particulate matter.
In a preferred embodiment of the present invention, the light scattering detection technical component includes a light cover, a light tube, a detection frame, a first lens, a second lens, a sealing plate and a light detection receiver, wherein the light cover is fixedly installed on the front side in the main shell of the detector, the light tube is arranged in the light cover, the detection frame is fixedly installed on the left side in the main shell of the detector, the first lens is arranged on the front side of the detection frame, the second lens is arranged on the rear side of the detection frame, the sealing plate is fixedly installed on the rear side of the detection frame, and the light detection receiver is positioned in the sealing plate.
In a preferred embodiment of the invention, the friction static electricity detection technical assembly comprises a detection probe, a vibration transmission rod, a probe vibration rod, a transmission line, a fixed groove plate and a reset spring, wherein the detection probe is fixedly connected in a mode of being uniformly arranged below the detection frame, the vibration transmission rod is connected to the front side of the detection frame in a sliding mode, the probe vibration rod is welded at the bottom end of the vibration transmission rod, the probe vibration rod is contacted with the detection probe, the transmission line is commonly connected to the detection probe, the top end of the transmission line is connected with a display screen, the transmission line passes through a main shell of the detector, the fixed groove plate is fixedly connected to the left side inside the main shell of the detector, the fixed groove plate is connected with the vibration transmission rod in a sliding mode, the fixed groove plate is mutually contacted with an air suction pump, and the reset spring is connected between the vibration transmission rod and the fixed groove plate.
In a preferred embodiment of the invention, the particle filtering component comprises a collecting frame, a fixed connecting frame, a top filtering frame and an electrostatic adsorption net, wherein the collecting frame is connected below the main shell of the detector in a sliding manner, the collecting frame is contacted with the detecting frame body, the fixed connecting frame is connected above the main shell of the detector in a sliding manner, the fixed connecting frame is fixedly connected with the top surface of the collecting frame, the top filtering frame is fixedly arranged on the fixed connecting frame, the top filtering frame is contacted with the detecting frame body, the top filtering frame is contacted with the top supporting plate, and the top filtering frame is provided with three electrostatic adsorption nets.
In a preferred embodiment of the present invention, after the electrostatic adsorption net is energized, because the charged body has the property of attracting light and small objects, the particles in the air are attracted to attach to the electrostatic adsorption net, so that the air and the particles in the air are filtered and separated.
In a preferred embodiment of the invention, the intelligent humidity sensor further comprises a capacitive humidity detection assembly, wherein the capacitive humidity detection assembly is arranged on a side panel of the detector, the capacitive humidity detection assembly comprises an air outlet frame, a small motor, a power shaft, a power gear, a fan blade, a lifting rack, a pressing spring, a sliding shifting plate, a pressing spring, a connecting rod and a capacitive humidity detector, the air outlet frame is fixedly arranged on the left side of the side panel of the detector, the small motor is fixedly arranged on the right side of the air outlet frame, the power shaft is fixedly connected with the air outlet frame in a rotating manner, the power shaft is fixedly connected with the power gear, the fan blade is fixedly connected with the middle part of the power shaft, the lifting rack is slidably connected with the side panel of the detector, the lifting rack is meshed with the power gear, the pressing spring is connected between the lifting rack and the side panel of the detector, the sliding shifting plate is connected with the two pressing springs, the connecting rod is fixedly connected with the lifting rack, and the capacitive humidity detector is welded on the left end of the lifting rack and is positioned in the detection frame.
In a preferred embodiment of the invention, the device further comprises a trigger assembly, the trigger assembly is arranged above the lifting rack, the trigger assembly comprises a fixed trigger rod and a rotary gear, the fixed trigger rod is fixedly connected above the lifting rack, the fixed trigger rod is in sliding connection with the side panel of the detector, and the rotary gear is fixedly connected with the four-angle sealing disc.
In a preferred embodiment of the invention, the air inlet cylinder further comprises a light shielding disc, and the top of the air inlet cylinder is provided with the light shielding disc.
In a preferred embodiment of the present invention, the light shielding plate is in a spiral arc shape, and is used for shielding external light to enable harmful substances in the air to be detected in a darkroom environment in the detection frame, and the light shielding plate can shield external light and simultaneously ensure that indoor air can be sucked into the air cylinder.
In a preferred embodiment of the present invention, a method for detecting an indoor air quality detector comprises the following steps:
S1, air quality detection: the method comprises the steps that a worker starts a suction pump, the suction pump sucks indoor air into a detection frame body through an air inlet cylinder, a lamp tube is started to emit a light source, the light source irradiates the air in the detection frame body through a photomask and a first lens, particles in the air are reflected to flash after irradiated, scattered light irradiates a light detection receiver through a second lens, and the light detection receiver measures the content of particles through the frequency and duration of the scattered light and transmits data to a display screen;
S2, filtering fine particles: fine particles in the air float above the detection frame body, the detected air is discharged into the main shell of the detector through the electrostatic adsorption net, and the electrostatic adsorption net adsorbs smaller particles, so that the purposes of filtering and separating the particles in the air are achieved;
S3, detecting larger particles: larger particles in the air are precipitated in the collecting frame through the detection probes, the detection probes can detect changes of charges carried in the particles and record the existence of the particles, the detection probes transmit detection data to the display screen through the transmission line, and a worker can know a detection result by observing the data in the display screen;
S4, preventing accumulation of particulate matters: the suction pump operates to generate slight vibration, and the suction pump can transmit the vibration to the vibration transmission rod, so that the vibration transmission rod can drive the probe vibration rod to reciprocate up and down to vibrate, and the probe vibration rod can transmit the vibration to the detection probe, so that the detection probe shakes off the particles stuck on the surface;
S5, cleaning particulate matters: after detection is completed, a worker manually pulls out the collecting frame, the collecting frame can drive the fixed connecting frame and the upper device of the fixed connecting frame to move in the direction away from the sealing plate, and the worker can clean the collecting frame and particles on the electrostatic adsorption net;
s6, detecting air humidity: the capacitive humidity detector can absorb moisture in the air in the detection frame, the dielectric constant in the capacitive humidity detector can change to change the capacitance value, so that the air humidity in the detection frame can be detected, and the capacitive humidity detector transmits humidity data to the display screen;
S7, accelerating exhaust: the staff presses the start key manually to enable the small motor to be electrified, the output shaft of the small motor rotates to drive the power shaft and the upper device of the power shaft to rotate, and the fan blade rotates to pump out air detected in the main shell of the detector.
Compared with the prior art, the invention has the following advantages:
through the light detection receiver, the light detection receiver receives particles in the air and reflects the flash light after being irradiated, and the light detection receiver measures the content of the particles through the frequency and the duration of scattered light, so that the air quality index is known.
The change of the electric charge carried in the particles can be detected through the detection probe, the existence of the particles can be recorded, meanwhile, slight vibration generated by operation of the suction pump is transmitted to the detection probe, so that the detection probe can shake off the particles with sticky surfaces, excessive accumulated particles on the detection probe are avoided, and the detection accuracy is ensured.
The larger particles in the detected air can be precipitated in the collecting frame, the static adsorption net can adsorb the smaller particles, the purposes of filtering and separating the particles in the air are achieved, the air is released into a room, and the circulation detection is gradually completed.
Through the fan blade that sets up, the fan blade rotates and will detect the air that finishes in the detector main casing and take out, and the quick follow detector main casing internal discharge of being convenient for of air simultaneously quick exhaust air current can blow away the water dispersion in the capacitive humidity detector, can reduce the error that leads to owing to residual moisture on the capacitive humidity detector.
Through the light shielding plate that sets up, the light shielding plate is used for shielding outside light, makes the simulation be in darkroom environment in the detection framework detect the harmful substance in the air, receives the interference of outside light when avoiding photodetection receiver to detect air quality and influences the accuracy nature of detection data.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment of the present invention.
Fig. 2 is a schematic perspective view of a second embodiment of the present invention.
Fig. 3 is a schematic perspective view of a third embodiment of the present invention.
Fig. 4 is a schematic perspective view, partly in section, of the present invention.
FIG. 5 is a schematic perspective view, partially cut-away, of an assembly of the light scattering detection technique of the present invention.
FIG. 6 is a schematic view of a partially cut-away split perspective structure of an assembly of the light scattering detection technique of the present invention.
Fig. 7 is a schematic perspective view of a seal plate and a light detecting receiver according to the present invention.
Fig. 8 is a schematic perspective view of a first part of a tribostatic detection device according to the present invention.
Fig. 9 is a schematic perspective view of a second part of the tribostatic detection technique assembly according to the invention.
Fig. 10 is a schematic perspective view of a third part of the tribostatic detection device according to the present invention.
Fig. 11 is a schematic perspective view of a particulate filter assembly according to the present invention.
Fig. 12 is a schematic perspective view of a first portion of a capacitive humidity sensor according to the present invention.
Fig. 13 is a schematic perspective view of a second part of the capacitive humidity sensor according to the present invention.
Fig. 14 is a schematic perspective view of a third portion of the capacitive humidity sensor of the present invention.
Fig. 15 is a schematic perspective view of a fourth part of a capacitive humidity sensor according to the present invention.
Fig. 16 is a schematic perspective view of a trigger assembly according to the present invention.
Fig. 17 is a partially disassembled perspective view of the present invention.
Fig. 18 is a schematic perspective view of a light shielding plate according to the present invention.
FIG. 19 is a flow chart of the working steps of the present invention.
Wherein the above figures include the following reference numerals: 1. the detector comprises a detector main shell, 2, a detector side panel, 3, an air suction pump, 31, an air inlet cylinder, 4, a display screen, 5, a fixed ventilation disk, 51, a four-corner sealing disk, 6, a top supporting plate, 7, a storage battery, 8, a light scattering detection technology component, 81, a light cover, 82, a lamp tube, 83, a detection frame body, 84, a first lens, 85, a second lens, 86, a sealing plate, 87, a light detection receiver, 9, a friction static detection technology component, 91, a detection probe, 92, a vibration transmission rod, 93, a probe vibration rod, 94, a transmission line, 95, a fixed groove plate, 96, a reset spring, 10, a particle filtering component, 101, a collecting frame, 102, a fixed connecting frame, 103, a top filtering frame, 104, an electrostatic absorption net, 11, a capacitance humidity detection component, 111, an air outlet frame, 112, a small motor, 113, a shaft, 114, a power gear, 1141, a fan blade, 115, a lifting rack, 116, a pressing spring, 117, a sliding shifting plate, 118, a compression spring, 119, a connecting rod, 1120, a capacitance type humidity detector, a reset spring, a 10, a particle filter, a collection frame, a fixed rotating disk, a 13, a trigger disk, a rotating disk and a trigger disk.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Example 1
An indoor air quality detector and a detection method thereof are disclosed in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 16 and fig. 17, and the indoor air quality detector comprises a detector main shell 1, a detector side panel 2, an air suction pump 3, an air inlet cylinder 31, a display screen 4, a fixed vent disc 5, a four-corner sealing disc 51, a top supporting plate 6, a storage battery 7, a light scattering detection technology component 8, a friction static detection technology component 9 and a particle filtering component 10, wherein the detector side panel 2 is fixedly arranged on the right side of the detector main shell 1, an air suction pump 3 for sucking indoor air into equipment is fixedly connected to the air suction pump 3, an air inlet cylinder 31 is fixedly connected to the detector main shell 1, a display screen 4 for displaying detection data is fixedly arranged above the rear side of the detector main shell 1, a fixed disc 5 is arranged below the detector side panel 2, a four-corner sealing disc 51 is rotatably connected to the fixed vent disc 5 and used for blocking the fixed disc 5, a light scattering detection technology component 8 is fixedly arranged above the detector main shell 1, the light scattering technology component 6 is fixedly arranged on the side of the detector main shell 6, the detector main shell 1, the particle scattering technology component 8 is fixedly arranged on the detector main shell 8, and the detector main shell is used for detecting the particle quality component.
The light scattering detection technology assembly 8 comprises a light cover 81, a light tube 82, a detection frame 83, a first lens 84, a second lens 85, a sealing plate 86 and a light detection receiver 87, wherein the light cover 81 is fixedly arranged on the front side in the main detector shell 1, the light tube 82 is arranged in the light cover 81, the detection frame 83 is fixedly arranged on the left side in the main detector shell 1, the detection frame 83 is a place for detecting air, the first lens 84 is arranged on the front side of the detection frame 83, the second lens 85 is arranged on the rear side of the detection frame 83, the sealing plate 86 is fixedly arranged on the rear side of the detection frame 83, the light detection receiver 87 is positioned in the sealing plate 86, and the light detection receiver 87 is used for detecting the content of particles.
The friction static electricity detection technology assembly 9 comprises a detection probe 91, a vibration transmission rod 92, a probe vibration rod 93, a transmission line 94, a fixed groove plate 95 and a reset spring 96, wherein the detection probe 91 is fixedly connected in a mode that the inner lower part of a detection frame 83 is uniformly arranged, the detection probe 91 is used for detecting change of electric charge carried in particles, the vibration transmission rod 92 is slidably connected to the front side of the detection frame 83 and is close to the left position, the probe vibration rod 93 is welded at the bottom end of the vibration transmission rod 92, the probe vibration rod 93 is in contact with the detection probe 91, the transmission line 94 is commonly connected to the detection probe 91, the top end of the transmission line 94 is connected with a display screen 4, the transmission line 94 penetrates through a main detector shell 1, the fixed groove plate 95 is fixedly connected to the left side inside the main detector shell 1, the fixed groove plate 95 is slidably connected with the vibration transmission rod 92, the fixed groove plate 95 is in contact with an air suction pump 3, the pump 3 is used for transmitting vibration generated by the pump 3 to the fixed groove plate 95, and the reset spring 96 is connected between the vibration transmission rod 92 and the fixed groove plate 95.
The particle filtering component 10 comprises a collecting frame 101, a fixed connecting frame 102, a top filtering frame 103 and an electrostatic adsorption net 104, wherein the collecting frame 101 for collecting larger particles is connected below the main shell 1 of the detector in a sliding manner, the collecting frame 101 is in contact with the detecting frame 83, the fixed connecting frame 102 is connected above the main shell 1 of the detector in a sliding manner, the fixed connecting frame 102 is fixedly connected with the top surface of the collecting frame 101, the top filtering frame 103 is fixedly mounted on the fixed connecting frame 102, the top filtering frame 103 is in contact with the detecting frame 83, the top filtering frame 103 is in contact with the top supporting plate 6, the top filtering frame 103 is provided with the three electrostatic adsorption nets 104, and the electrostatic adsorption nets 104 are used for adsorbing smaller particles.
When the device is used for detecting harmful substances in indoor air, the device is placed in a room, a worker manually starts the suction pump 3, the suction pump 3 sucks the indoor air into the detection frame 83 through the air inlet cylinder 31, the worker presses the start key to start the lamp 82 to emit light, the light source irradiates the air in the detection frame 83 through the photomask 81 and the first lens 84, particles in the air are reflected to flash after irradiation, scattered light irradiates the light detection receiver 87 through the second lens 85, the light detection receiver 87 converts an optical signal into an electric signal, then the electric signal is amplified by an electronic circuit and then reduced into an original signal, the light detection receiver 87 measures the content of the particles through the frequency and the duration of the scattered light and transmits the data to the display screen 4, and the air quality detection operation is completed.
Fine particles in the air can float to the upper part of the detection frame 83, the detected air is discharged into the main shell 1 of the detector through the electrostatic adsorption net 104, and the electrostatic adsorption net 104 can adsorb smaller particles, so that the purposes of filtering and separating the particles in the air are achieved. The big particulate matters in the air can be precipitated in the collecting frame 101, the big particulate matters in the air can pass through the detection probe 91 in the precipitation process, the detection probe 91 can detect the change of charges carried in the particulate matters and record the existence of the particulate matters, the detection probe 91 transmits detection data to the display screen 4 through the transmission line 94, and a worker can know the detection result by observing the data in the display screen 4.
The operation of the suction pump 3 can generate slight vibration, the suction pump 3 can transmit the vibration to the vibration transmission rod 92, so that the vibration transmission rod 92 can drive the probe vibration rod 93 to reciprocate up and down, and the probe vibration rod 93 can transmit the vibration to the detection probe 91, so that the detection probe 91 shakes off the surface-sticky particles, excessive accumulated particles on the detection probe 91 are avoided, and the detection accuracy is ensured.
Repeating the above operation, gradually completing the cycle detection, after the detection is completed, the staff manually rotates the four-angle sealing disc 51, so that the four-angle sealing disc 51 does not block the fixed ventilation disc 5 any more, so that air is discharged from the main shell 1 of the detector through the fixed ventilation disc 5, the staff manually pulls out the collecting frame 101, the collecting frame 101 drives the fixed connecting frame 102 and the upper device thereof to move towards the direction far away from the sealing plate 86, and the staff can clean the particulate matters on the collecting frame 101 and the electrostatic adsorption net 104.
Example 2
Based on embodiment 1, as shown in fig. 11, 12, 13, 14 and 15, the device further comprises a capacitive humidity detection assembly 11, the capacitive humidity detection assembly 11 is arranged on the side panel 2 of the detector, the capacitive humidity detection assembly 11 is used for detecting the air humidity in the detection frame 83, the capacitive humidity detection assembly 11 comprises an air outlet frame 111, a small motor 112, a power shaft 113, a power gear 114, a fan blade 1141, a lifting rack 115, a compression spring 116, a sliding shifting plate 117, a compression spring 118, a connecting rod 119 and a capacitive humidity detector 1120, the left side of the side panel 2 of the detector is fixedly provided with the air outlet frame 111, the right side of the air outlet frame 111 is fixedly provided with a small motor 112 for driving, the output shaft of the small motor 112 is fixedly connected with the power shaft 113 in a rotary manner with the air outlet frame 111, the power shaft 113 is fixedly connected with a power gear 114, a fan blade 1141 is fixedly connected to the middle of the power shaft 113, the fan blade 1141 is used for extracting air detected in the main detector shell 1, a lifting rack 115 is connected to the side detector panel 2 in a sliding mode, the lifting rack 115 is meshed with the power gear 114, an extrusion spring 116 is connected between the lifting rack 115 and the side detector panel 2, a sliding shifting plate 117 is connected to the lifting rack 115 in a sliding mode, two compression springs 118 are connected between the sliding shifting plate 117 and the lifting rack 115, a connecting rod 119 is fixedly connected to the lifting rack 115, a capacitive humidity detector 1120 is welded at the left end of the connecting rod 119, and the capacitive humidity detector 1120 is used for detecting air humidity in the detection frame 83 and is located in the detection frame 83.
When the device is operated, the capacitive humidity detector 1120 absorbs moisture in the air in the detection frame 83, and the dielectric constant in the capacitive humidity detector 1120 changes to change the capacitance value, so that the humidity of the air in the detection frame 83 can be detected, and the capacitive humidity detector 1120 transmits humidity data to the display screen 4. When the equipment operates, a worker presses a start key manually, so that the small motor 112 is electrified to operate, an output shaft of the small motor 112 rotates to drive the power shaft 113 and an upper device thereof to rotate, the fan blade 1141 rotates to pump out air detected in the main detector shell 1, air is conveniently and rapidly discharged from the main detector shell 1, meanwhile, the power gear 114 rotates to drive the lifting rack 115 to move downwards, the lifting rack 115 and the upper device thereof are always in a downward movement state under the action of the sliding poking plate 117 and the compression spring 118, the capacitive humidity detector 1120 does not detect air in the detection frame 83 any more due to the downward movement, air flow can blow and disperse water on the capacitive humidity detector 1120 when the air in the main detector shell 1 is rapidly discharged, residual moisture on the capacitive humidity detector 1120 during subsequent detection is avoided, and errors caused by the residual water on the capacitive humidity detector 1120 can be reduced.
Example 3
On the basis of embodiment 2, as shown in fig. 16 and 17, the detector side panel 2 further comprises a trigger assembly 12, the trigger assembly 12 is arranged above the lifting rack 115, the trigger assembly 12 is used for rotating the four-angle sealing disc 51 to enable the fixed ventilation disc 5 to be opened, the trigger assembly 12 comprises a fixed trigger rod 121 and a rotary gear 122, the fixed trigger rod 121 is fixedly connected above the lifting rack 115, the fixed trigger rod 121 is slidably connected with the detector side panel 2, and the rotary gear 122 is fixedly connected to the four-angle sealing disc 51.
The lifting rack 115 moves downwards to drive the fixed trigger rod 121 to move downwards, the fixed trigger rod 121 drives the rotary gear 122 and the tetragonal sealing disk 51 to rotate, the tetragonal sealing disk 51 does not block the fixed ventilation disk 5 any more, and the trouble of manually rotating the tetragonal sealing disk 51 is omitted.
Example 4
On the basis of embodiment 3, as shown in fig. 1 and 18, a light shielding plate 13 is further included, and a light shielding plate 13 is disposed at the top of the air inlet tube 31, and the light shielding plate 13 is used for shielding external light.
The light shielding disc 13 can shield external light, prevent external light from irradiating into the detection frame 83 through the air inlet cylinder 31, enable the detection frame 83 to simulate a darkroom environment to detect harmful substances in the air, and prevent the light detection receiver 87 from being affected by interference of external light when detecting the air quality to the accuracy of detection data.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an indoor air quality detector, including detector main casing (1), its characterized in that still includes:
the detector side panel (2) is fixedly arranged on the right side of the detector main shell (1);
The air suction pump (3) is arranged on the left side of the detector main shell (1), and the air suction pump (3) is used for sucking indoor air into the equipment for detection;
an air inlet cylinder (31), the air suction pump (3) is fixedly connected with the air inlet cylinder (31), and the air inlet cylinder (31) is used for conveying air;
the display screen (4) is fixedly arranged above the rear side of the detector main shell (1), and the display screen (4) is used for displaying detection data;
The air detector comprises a fixed ventilation disc (5), wherein the fixed ventilation disc (5) is arranged below a side panel (2) of the detector, the fixed ventilation disc (5) is used for exhausting air in a main shell (1) of the detector, a four-angle sealing disc (51) is rotationally connected to the fixed ventilation disc (5), and the four-angle sealing disc (51) is used for blocking the fixed ventilation disc (5);
The top support plate (6) is fixedly arranged above the inner side of the main shell (1) of the detector, the top support plate (6) is internally fixedly provided with the storage battery (7), and the storage battery (7) is used for supplying power to equipment;
The light scattering detection technology assembly (8), the light scattering detection technology assembly (8) is positioned in the main shell (1) of the detector, and the light scattering detection technology assembly (8) is used for detecting the content of particles in the air;
The friction electrostatic detection technology assembly (9), the light scattering detection technology assembly (8) is provided with the friction electrostatic detection technology assembly (9), and the friction electrostatic detection technology assembly (9) is used for detecting particulate matters in the air;
The particle filter assembly (10) is connected to the detector main shell (1) in a sliding manner, and the particle filter assembly (10) is used for filtering and separating fine particles; the light scattering detection technology assembly (8) comprises a light cover (81), a light tube (82), a detection frame body (83), a first lens (84), a second lens (85), a sealing plate (86) and a light detection receiver (87), wherein the light cover (81) is fixedly arranged on the inner front side of the main shell (1) of the detector, the light tube (82) is arranged in the light cover (81), the detection frame body (83) is fixedly arranged on the inner left side of the main shell (1) of the detector, the first lens (84) is arranged on the front side of the detection frame body (83), the second lens (85) is arranged on the rear side of the detection frame body (83), the sealing plate (86) is fixedly arranged on the rear side of the detection frame body (83), and the light detection receiver (87) is positioned in the sealing plate (86);
The friction static electricity detection technology assembly (9) comprises a detection probe (91), a vibration transmission rod (92), a probe vibration rod (93), a transmission line (94), a fixed groove plate (95) and a reset spring (96), wherein the detection probe (91) is fixedly connected in a mode that the lower parts in the detection frame body (83) are uniformly arranged, the vibration transmission rod (92) is connected to the front side of the detection frame body (83) at a left position in a sliding mode, the probe vibration rod (93) is welded at the bottom end of the vibration transmission rod (92), the probe vibration rod (93) is in contact with the detection probe (91), the transmission line (94) is connected to the detection probe (91) together, the top end of the transmission line (94) is connected with the display screen (4), the transmission line (94) penetrates through the main shell (1) of the detector, the fixed groove plate (95) is fixedly connected to the left side inside the main shell (1) of the detector, the fixed groove plate (95) is connected with the vibration transmission rod (92) in a sliding mode, the fixed groove plate (95) is in contact with the suction pump (3) mutually, and the reset spring (96) is connected between the vibration transmission rod (92) and the fixed groove plate (95).
2. The indoor air quality detector according to claim 1, wherein the particle filtering component (10) comprises a collecting frame (101), a fixed connection frame (102), a top filtering frame (103) and an electrostatic adsorption net (104), the collecting frame (101) is connected below the main detector shell (1) in a sliding mode, the collecting frame (101) is in contact with the detecting frame body (83), the fixed connection frame (102) is connected above the main detector shell (1) in a sliding mode, the fixed connection frame (102) is fixedly connected with the top surface of the collecting frame (101), the top filtering frame (103) is fixedly installed on the fixed connection frame (102), the top filtering frame (103) is in contact with the detecting frame body (83), the top filtering frame (103) is in contact with the top supporting plate (6), and the top filtering frame (103) is provided with the three electrostatic adsorption nets (104).
3. The indoor air quality detector according to claim 2, wherein after the electrostatic adsorption net (104) is energized, because the charged body has the property of attracting light and small objects, the particles in the air are attracted and attached to the electrostatic adsorption net (104), so that the air is filtered and separated from the particles in the air.
4. The indoor air quality detector according to claim 2, further comprising a capacitive humidity detection assembly (11), wherein the capacitive humidity detection assembly (11) is arranged on the side panel (2) of the detector, the capacitive humidity detection assembly (11) comprises an air outlet frame (111), a small motor (112), a power shaft (113), a power gear (114), a fan blade (1141), a lifting rack (115), a pressing spring (116), a sliding shifting plate (117), a compression spring (118), a connecting rod (119) and a capacitive humidity detector (1120), the air outlet frame (111) is fixedly arranged on the left side of the side panel (2) of the detector, the small motor (112) is fixedly arranged on the right side of the air outlet frame (111), the power shaft (113) is rotatably connected with the air outlet frame (111), the power shaft (113) is fixedly connected with a power gear (114), the fan blade (1141) is fixedly connected with the middle part of the air outlet frame (113), the lifting rack (115) is slidably connected with the side panel (2) of the detector, the lifting rack (115) is meshed with the power rack (114) of the side panel (116) of the detector, the lifting rack (115) is connected with a sliding shifting plate (117) in a sliding mode, two compression springs (118) are connected between the sliding shifting plate (117) and the lifting rack (115), a connecting rod (119) is fixedly connected to the lifting rack (115), a capacitive humidity detector (1120) is welded at the left end of the connecting rod (119), and the capacitive humidity detector (1120) is located in the detection frame body (83).
5. The indoor air quality detector according to claim 4, further comprising a trigger assembly (12), wherein the trigger assembly (12) is arranged above the lifting rack (115), the trigger assembly (12) comprises a fixed trigger rod (121) and a rotary gear (122), the fixed trigger rod (121) is fixedly connected above the lifting rack (115), the fixed trigger rod (121) is slidably connected with the side panel (2) of the detector, and the rotary gear (122) is fixedly connected with the four-angle sealing disc (51).
6. The indoor air quality detector as set forth in claim 5, further comprising a light shielding plate (13), wherein the light shielding plate (13) is disposed at the inner top of the air inlet cylinder (31).
7. The indoor air quality detector according to claim 6, wherein the light shielding plate (13) is in a spiral arc shape, the light shielding plate (13) is used for shielding external light so that the detection frame (83) is simulated to be in a darkroom environment for detecting harmful substances in the air, and the light shielding plate (13) can shield the external light and ensure that the indoor air can be sucked into the air cylinder (31).
8. A method for detecting an indoor air quality detector, comprising the indoor air quality detector according to any one of claims 1-7, characterized by comprising the following working steps:
S1, air quality detection: starting a suction pump (3) by a worker, sucking indoor air into a detection frame body (83) through an air inlet cylinder (31) by the suction pump (3), starting a lamp tube (82) to emit a light source, irradiating the air in the detection frame body (83) through a photomask (81) and a first lens (84) by the light source, reflecting flash light after irradiation of particles in the air, irradiating scattered light onto a light detection receiver (87) through a second lens (85), measuring the content of the particles through the frequency and duration of the scattered light by the light detection receiver (87), and transmitting data to a display screen (4);
s2, filtering fine particles: fine particles in the air float above the detection frame body (83), the detected air is discharged into the main shell (1) of the detector through the electrostatic adsorption net (104), and the electrostatic adsorption net (104) can adsorb the smaller particles, so that the purposes of filtering and separating the particles in the air are achieved;
S3, detecting larger particles: larger particles in the air are precipitated in the collecting frame (101) through the detection probe (91), the detection probe (91) can detect the change of charges carried in the particles and record the existence of the particles, the detection probe (91) transmits detection data to the display screen (4) through the transmission line (94), and a worker can know the detection result by observing the data in the display screen (4);
S4, preventing accumulation of particulate matters: the operation of the suction pump (3) generates slight vibration, the suction pump (3) can transmit the vibration to the vibration transmission rod (92), so that the vibration transmission rod (92) can drive the probe vibration rod (93) to reciprocate up and down to vibrate, and then the probe vibration rod (93) can transmit the vibration to the detection probe (91), so that the detection probe (91) shakes off the particles with sticky surfaces;
S5, cleaning particulate matters: after detection is completed, a worker manually pulls out the collecting frame (101), the collecting frame (101) drives the fixed connecting frame (102) and the device on the fixed connecting frame to move in the direction away from the sealing plate (86), and the worker can clean particulate matters on the collecting frame (101) and the electrostatic adsorption net (104);
S6, detecting air humidity: the capacitive humidity detector (1120) absorbs moisture in the air in the detection frame (83), the dielectric constant in the capacitive humidity detector (1120) changes to change the capacitance value, and therefore the air humidity in the detection frame (83) can be detected, and the capacitive humidity detector (1120) transmits humidity data to the display screen (4);
S7, accelerating exhaust: the operator presses the start key manually to enable the small motor (112) to be electrified, the output shaft of the small motor (112) rotates to drive the power shaft (113) and the device on the power shaft to rotate, and the fan blade (1141) rotates to pump out air detected in the main shell (1) of the detector.
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