CN110658312A - Indoor air detector - Google Patents
Indoor air detector Download PDFInfo
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- CN110658312A CN110658312A CN201911024722.XA CN201911024722A CN110658312A CN 110658312 A CN110658312 A CN 110658312A CN 201911024722 A CN201911024722 A CN 201911024722A CN 110658312 A CN110658312 A CN 110658312A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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Abstract
The invention discloses an indoor air detector which comprises a shell, a gas collecting pipe, a volatile gas trapping device and a sliding rail, wherein an opening connected with the gas collecting pipe is formed in the shell, a gas trapping channel communicated with the opening is arranged in the shell, the gas trapping channel comprises a rotating part and a fixing part, the rotating part is detachably and fixedly connected with the end part of the gas collecting pipe, the fixing part is connected with the volatile gas trapping device, the sliding rail is arranged at the bottom of the shell, and a positioning block is arranged on the sliding rail. The indoor air detection device has the advantages that a user can install a plurality of volatile gas trapping devices with built-in adsorbing materials in the indoor air detection device, and a plurality of air samples can be collected.
Description
Technical Field
The invention relates to the technical field of indoor air detection, in particular to an indoor air detector.
Background
The residents in the Chinese cities account for less than half of the total population, but the air breathed by the residents of more than 2.7 hundred million does not reach the standard. This nearly towering statement, OECD chinese environmental performance assessment, announced by the united Organization (OECD) on day 7, month 17, 2007, reports that in a person's lifetime, at least more than 80% of the time spent in an indoor environment, less than 5% of the time spent outdoors, and the rest of the time in between. Some people with mobility disabilities, the elderly, and infants may live up to 95% of the time indoors. Therefore, the quality of indoor air is more closely and more important to human health.
In daily life of people, the influence of indoor air quality on human health is the largest, for example, harmful substances generated in the house decoration process are inhaled by children to cause great harm, for example, toxic gases generated in factory buildings of a processing plant are easily inhaled by workers who carry out construction, and the harm is brought to the physical health of the workers. The need to detect the quality of air in a room is increasing.
When volatile gas in the detection air, the material that has the absorption volatile gas is usually adopted to carry out the sample entrapment to volatile gas in the air, however generally volatile gas entrapment in-process because the stroke that the air shuttles back and forth along the air flue is shorter, causes volatile gas entrapment efficiency lower, leads to air detection result data and real environment to have certain gap. The sample among the present air sampler catches the pipe adsorbability material and catches pipe formula as an organic whole, catches the pipe moreover and mostly is the glass material, has gathered the sample after, takes out the adsorption material and need smash catching the pipe, causes the pollution of sample, detects inaccurate and cause the injury to the people easily.
In addition, when the indoor space is detected, air samples are usually fixedly collected at the measuring points, and the environment of the indoor space cannot be integrally evaluated, for example, if sampling is performed at multiple points, although the effect of integrally evaluating the indoor air quality can be achieved, the detection cost is high, and the implementation and the promotion of detection items are not facilitated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an indoor air detector, which is used for improving the range of a sampling space and reducing the sampling detection cost, has a simple structure, is easy to manufacture, and can improve the shuttle stroke of air along an air trapping channel in the volatile gas trapping process, thereby improving the consistency of an air detection result and the real environment.
The utility model provides an indoor air detector, includes casing, discharge, volatile gaseous entrapment device, slide rail, be provided with on the casing one with the opening that the discharge is connected is located casing internally mounted have with the gas channel is caught to the opening intercommunication, it includes rotating part and fixed part to catch the gas channel, the rotating part with the tip detachable fixed connection of discharge, the fixed part with volatile gaseous entrapment device connects, the slide rail set up in the casing bottom, install the locating piece on the slide rail, volatile gaseous entrapment device install in between the adjacent locating piece.
Preferably, the air detector still includes driving motor, driving motor includes motor body, pivot and gear train, the gear train with the pivot is connected, the gear train with the rotating part cooperation is connected, is used for the drive the rotating part.
Preferably, a plurality of positioning blocks are installed on the slide rail, and the volatile gas trapping device is installed between two adjacent positioning blocks.
Preferably, a circulating air exchange channel is arranged on the shell, a fan is installed in the circulating air exchange channel, the circulating air exchange channel is connected with the fixing part, a through hole is formed in the fixing part, and the circulating air exchange channel is communicated with the air trapping channel through the through hole.
Preferably, a communication valve is installed on the circulating ventilation channel and used for communicating the circulating ventilation channel with the gas trapping channel or closing the circulating ventilation channel with the gas trapping channel.
Preferably, the volatile gas trapping device comprises a tank body and a piston, the piston is connected with the inner wall of the tank body in a sliding manner, an accommodating cavity is formed between the tank body and the piston, an air inlet which penetrates through the wall surface of the tank body and is communicated with the accommodating cavity is formed in the wall surface of the tank body, a first filter layer is arranged at the air inlet, and the filter layer covers the air inlet; the inner wall of the tank body is provided with an annular boss along the air inlet, the first annular boss and the tank body are integrally arranged, an annular groove is further arranged in the tank body, the opening direction of the annular groove is opposite to that of the annular boss and surrounds the outer side of the annular boss, a rotary and communicated air inlet channel is formed between the annular boss and the annular groove, and an adsorbing material for adsorbing the volatile gas is contained in the air inlet channel; the internal second filter layer that is provided with of jar, the second filter layer pass through the connecting piece with fixed connection can be dismantled to jar body wall, the annular groove bottom through a connecting rod with second filter layer fixed connection.
Preferably, the adsorbent material is polystyrene-divinylbenzene adsorbent resin particles, ion exchange resin particles, polycyclic aromatic hydrocarbon particles, and nitrosamine particles.
Preferably, the can is cylindrical.
Preferably, a sealing film is arranged on the outer side of the air inlet of the tank body, and the sealing film is adhered to the outer wall surface of the tank body and used for sealing the air inlet.
Preferably, a first sealing ring is arranged at the joint of the second filter layer and the outer edge with the inner wall of the tank body.
Preferably, a second sealing ring is arranged at the joint of the first filtering layer and the wall surface of the air inlet.
Preferably, the connector is a nut.
Preferably, the can is made of a transparent material.
Preferably, the can is made of a glass material.
Preferably, the can body is made of a metal material.
Preferably, the gas collecting pipe comprises a gas collecting pipe body, a gas collecting cover and a plurality of gas introducing pipes, wherein a first gas introducing port, a plurality of second gas introducing ports and a third gas introducing port are formed in the gas collecting cover, a gas collecting cavity communicated with the first gas introducing port, the second gas introducing ports and the third gas introducing ports is formed in the gas collecting cover, one end of the gas collecting pipe body is communicated with the first gas introducing port, one end of each of the gas introducing pipes is communicated with the plurality of second gas introducing ports, the other end of each of the gas introducing pipes is sealed, and gas introducing holes penetrating through the wall surfaces of the gas introducing pipes are formed in the gas introducing pipes along the normal direction of the axes of the gas introducing pipes.
Preferably, the gas collecting cover is cylindrical, and the first gas introducing port is arranged on the axis of the gas collecting cover.
Preferably, a plurality of the second bleed ports are provided centering on the first bleed port.
Preferably, the bleed pipe includes outer loop bleed pipe and inner ring bleed pipe, inner ring bleed pipe set up in the outer loop bleed pipe, just inner ring bleed pipe with outer loop bleed pipe telescopic connection.
Preferably, a sealing ring is arranged at a connecting part of the inner ring bleed air pipe and the outer ring bleed air pipe.
Preferably, the third bleed port is opened on the other side of the gas collection cover opposite to the first bleed port.
Preferably, the joint of the air-entraining pipe and the second air-entraining port is communicated through a hose, and the hose is made of a silica gel material.
Preferably, the gas collecting device further comprises a telescopic rod, one end of the telescopic rod is connected with the gas collecting pipe body, and the other end of the telescopic rod is connected with the gas introducing pipe and used for adjusting an included angle between the gas introducing pipe and the gas collecting pipe body.
Preferably, a first connecting portion and a second connecting portion are respectively arranged at two ends of the telescopic rod, and the first connecting portion and the second connecting portion are respectively movably connected with the wall surface of the gas collecting pipe body and the wall surface of the gas introducing pipe.
The invention has the beneficial effects that: a user can install a plurality of volatile gas trapping devices with built-in adsorbing materials in the indoor air detection device, so that a plurality of air samples can be collected; in addition, through setting up annular boss and ring channel, form the intake duct that has the route of turning back with the intake duct that the jar body was put the space, improved the stroke that volatile gas entrapment in-process air shuttled back and forth along catching the gas channel to improve the uniformity of air detection result and real environment, on the other hand this jar of second filter layer and jar body can be dismantled and be connected, make the material of having catched volatile gas take out from putting the cavity, improved the convenience that the device used. The indoor air detector can also enlarge the range of the sampling space, can adjust the detection sampling range, can be used for narrow space, is convenient to carry and install, has a simple structure, is easy to manufacture, and reduces the sampling detection cost.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of an indoor air detector according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a gas collecting tube structure according to an embodiment of the present invention;
fig. 3 is a front view of a gas manifold according to an embodiment of the present invention;
FIG. 4 is a schematic view of a retracted configuration of the bleed air duct provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic view of an internal structure of a can according to an embodiment of the present invention.
In the attached drawing, 10-a tank body, 101-a sealing film, 102-an air inlet, 1021-a first filtering layer, 103-an annular boss, 104-an annular groove, 105-a connecting rod, 106-polystyrene-divinylbenzene adsorption resin particles, 107-a second filtering layer, 108-a nut, 109-a piston, 11-a sliding rail, 110-a positioning block, 20-a gas collecting pipe body, 210-a gas collecting cover, 211-a gas collecting chamber, 210-a third gas introducing port, 212-a first gas introducing port, 213-a second gas introducing port, 22-a gas introducing pipe, 2201-an inner ring gas introducing pipe, 2202-an outer ring gas introducing pipe, 2203-a gas introducing hole, 2204-a silica gel hose, 23-a telescopic rod, 231-a first connecting part, 232-a second connecting part and 30-a gas trapping channel, 40-communication valve, 50-fan, 60-driving motor, 601-rotating part, 70-shell.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Fig. 1 is a diagram of an indoor air detector according to an embodiment of the present invention, and as shown in fig. 1, the indoor air detector includes a housing 70, a gas collecting pipe, a volatile gas trapping device, and a sliding rail 11, an opening connected to the gas collecting pipe is disposed on the housing 70, a gas trapping channel 30 communicated with the opening is disposed inside the housing 70, the gas trapping channel 30 includes a rotating portion 601 and a fixing portion 80, the rotating portion 601 is detachably and fixedly connected to an end of the gas collecting pipe, the fixing portion 80 is connected to the volatile gas trapping device, the sliding rail 11 is disposed at a bottom of the housing 70, specifically, a plurality of positioning blocks 110 are mounted on the sliding rail 11, and the volatile gas trapping device is mounted between two adjacent positioning blocks 110.
In order to make the embodiment of the present invention easier to implement, the air detector further includes a driving motor 60, where the driving motor 60 includes a motor body, a rotating shaft, and a gear set, the gear set is connected to the rotating shaft, and the gear set is connected to the rotating portion 601 in a matching manner, and is used for driving the rotating portion 601 to rotate. The driving motor 60 is connected with the rotating part 601 in a matching way, and drives the rotating part 601 as the prior art; specifically, the rotating portion 601 rotates to drive one end of the gas collecting tube connected to the rotating portion 601, as shown in fig. 2, where fig. 2 is a schematic view of a structure of the gas collecting tube according to an embodiment of the present invention; specifically, the gas collecting tube includes a gas collecting tube body 20, a gas collecting cover 210 and a plurality of gas introducing tubes 22, the gas collecting cover 210 is provided with a first gas introducing port 212, a plurality of second gas introducing ports and a third gas introducing port 210, as shown in fig. 3, a gas collecting chamber 211 communicated with the first gas introducing port 212, the second gas introducing port and the third gas introducing port is provided inside the gas collecting cover 210, one end of the gas collecting tube body 20 is communicated with the first gas introducing port, one end of each of the plurality of gas introducing tubes 22 is respectively communicated with the plurality of second gas introducing ports 213, the other end of each of the plurality of gas introducing tubes 22 is closed, and the gas introducing tubes 22 are provided with gas introducing holes 2203 penetrating through the wall surfaces of the gas introducing tubes 22 in the normal direction of the axis of the gas introducing tubes 22.
In order to make the present invention easier to implement, in this embodiment, the air collecting cover 210 is cylindrical, and the first air introducing port 212 is disposed along the axis of the air collecting cover 210. Specifically, the second bleed ports 213 are provided with the first bleed port 212 as a center. The purpose of this is that, by this design, the bleed air duct 22 can be extended radially after being connected to the second bleed air port 213, resulting in a wider detection coverage, as shown in fig. 4.
In order to make the present invention easier to implement, in this embodiment, the bleed air pipes 22 include an outer ring bleed air pipe 2202 and an inner ring bleed air pipe 2201, the inner ring bleed air pipe 2201 is disposed in the outer ring bleed air pipe 2202, and the inner ring bleed air pipe 2201 is telescopically connected to the outer ring bleed air pipe 2202, as shown in fig. 2.
In order to make the present invention easier to implement, in this embodiment, a sealing ring is disposed at a connection portion between the inner ring bleed air pipe 2201 and the outer ring bleed air pipe 2202. The sealing ring is arranged to effectively prevent the inner space of the inner ring air guide pipe 2201 and the inner space of the outer ring air guide pipe 2202 from being communicated with the outside, and the overall precision of the device is improved.
In order to make the present invention easier to implement, in this embodiment, the third bleed port 210 is opened on the other side of the air collecting cover 210 opposite to the first bleed port 212. It should be noted that the third bleed port 210 is provided in the air collection cover 210, so that when the detection space condition is narrow, the bleed pipe 22 does not expand, and only the third bleed port 210 in the air collection cover 210 is used for collecting an air sample. Therefore, the convenience of air collection and detection is improved, and the application range of the air detection device is expanded.
In order to make the present invention easier to implement, in this embodiment, as shown in fig. 3, a connection portion between the bleed air pipe 22 and the second bleed air port 213 is communicated through a hose, and the hose is a silicone hose 2204 made of a silicone material. It should be noted that the adoption of the silica gel material can avoid the aging and breaking phenomena after the plastic material is repeatedly bent, thereby prolonging the service life of the gas collecting pipe.
In order to make the present invention easier to implement, in this embodiment, the wall surfaces of the gas collecting tube body 20 and the air-guiding tube 22 are provided with a telescopic rod 23, one end of the telescopic rod 23 is connected to the gas collecting tube body 20, and the other end is connected to the air-guiding tube 22, so as to adjust an included angle between the air-guiding tube 22 and the gas collecting tube body 20. Particularly, the two ends of the telescopic rod 23 are respectively provided with a first connecting portion 231 and a second connecting portion 232, and the first connecting portion 231 and the second connecting portion 232 are respectively movably connected with the wall surface of the gas collecting pipe body 20 and the wall surface of the air guiding pipe 22.
Further, a circulation ventilation channel is arranged on the housing 70, a fan 50 is installed in the circulation ventilation channel, the circulation ventilation channel is connected with the fixing portion 80, and a through hole is formed in the fixing portion 80 and communicates the circulation ventilation channel with the air trapping channel 30. It should be noted that, usually, there is a large difference between the air in the inner space of the air collecting tube and the ambient air, so to avoid the air in the inner space of the air collecting tube from interfering with the detection result, the operator may turn on the fan 50 before performing the air detection operation, and at this time, under the suction action of the fan 50, the indoor air passes through the air collecting tube, the air capturing channel 30 and the circulating ventilation channel, and is then discharged to the air for circulation, and the process time is at least 20s, and the specific time is not limited.
Specifically, a communication valve 40 is installed on the circulation ventilation channel, and the communication valve 40 is used for communicating the circulation ventilation channel with the gas trapping channel 30 or closing the circulation ventilation channel with the gas trapping channel 30. When the ventilation operation is completed, the communication valve 40 is closed, and the fixing portion 80 is communicated with the volatile gas trapping device, so as to make the present invention more easily understood, fig. 5 provides a schematic structural view of the volatile gas trapping device; as shown in fig. 5.
The volatile gas trapping device comprises a tank body 10 and a piston 109, wherein the piston 109 is connected with the inner wall of the tank body 10 in a sliding way, and an accommodating cavity is arranged between the tank body 10 and the piston 109.
Particularly, seted up on the wall of the jar body 10 and run through the jar body 10 wall and with the air inlet 102 of holding cavity intercommunication, jar body 10 inner wall is followed air inlet 102 is provided with annular boss 103, first annular boss 103 with jar body 10 an organic whole sets up, still be provided with ring channel 104 in the jar body 10, ring channel 104 opening direction with annular boss 103 is relative, and surround in the annular boss 103 outside, annular boss 103 with form the intake duct of a gyration intercommunication between the ring channel 104, the holding has the absorption in the intake duct the material of volatile gas. In this embodiment, the adsorbent is polystyrene-divinylbenzene adsorbent resin particles 106.
It should be further noted that by increasing the moving stroke of the air in the present air trapping device, the target trapping gas can be completely trapped by the polystyrene-divinylbenzene adsorbent resin particles 106.
In order to make the embodiment of the invention easier to implement, a second filter layer 107 is arranged in the tank 10, the second filter layer 107 is detachably and fixedly connected with the wall surface of the tank 10 through a connecting piece, and the bottom of the annular groove 104 is fixedly connected with the second filter layer 107 through a connecting rod 105.
To make the embodiment of the present invention easier to implement, a first filter layer 1021 is disposed at the air inlet 102, and covers the air inlet 102.
In order to make the embodiment of the present invention easier to implement, a sealing film 101 is disposed outside the air inlet 102 of the can body 10, and the sealing film 101 is adhered to the outer wall surface of the can body 10 to seal the air inlet 102.
In order to make the embodiment of the invention easier to implement, a first sealing ring is arranged at the joint of the second filter layer 107 and the outer edge and the inner wall of the tank 10, so that the air leakage at the joint of the second filter layer 107 and the outer edge and the inner wall of the tank 10 is effectively prevented, and the error of the test result is caused. It should be noted that the first seal ring according to the present embodiment is of a conventional design, and the material and shape thereof are not important for the protection of the present invention.
To make the embodiment of the present invention easier to implement, the can body 10 is cylindrical.
In order to make the embodiment of the present invention easier to implement, a second sealing ring is disposed at a joint of the first filtering layer 1021 and the wall surface of the air inlet 102, so as to effectively prevent air leakage at the joint of the first filtering layer 1021 and the wall surface of the air inlet 102, which may cause errors in the test result. It should be noted that the first seal ring according to the present embodiment is of a conventional design, and the material and shape thereof are not important for the protection of the present invention.
To make embodiments of the present invention easier to implement, the connector is a nut 108.
To make the embodiment of the present invention easier to implement, the can 10 is made of a transparent material. Specifically, in the present embodiment, the can 10 is made of a glass material.
It should be noted that, a plurality of volatile gas trapping devices may be disposed in the housing 70, so as to collect a plurality of air samples, and in particular, the plurality of volatile gas trapping devices may be used to detect the consistency of the indoor air detector, that is, detect the same sample point, and the last measured data range of different volatile gas trapping devices satisfies the threshold of the error range.
In summary, the following steps: the invention enlarges the range of the sampling space by designing the rotatable and telescopic air guide pipe, can adjust the detection sampling range, can be used for narrow space, is convenient to carry and install, has simple structure, is easy to manufacture, and reduces the sampling detection cost. In addition, through setting up annular boss and ring channel, form the intake duct that has the route of turning back with the intake duct that the jar body was put the space, improved the stroke that volatile gas entrapment in-process air shuttled back and forth along catching the gas channel to improve the uniformity of air detection result and real environment, on the other hand this jar of second filter layer and jar body can be dismantled and be connected, make the material of having catched volatile gas take out from putting the cavity, improved the convenience that the device used.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. An indoor air detector, characterized in that: including casing, gas collecting pipe, volatile gaseous entrapment device, slide rail, be provided with on the casing one with the opening that the gas collecting pipe is connected is located casing internally mounted have with the gas channel is caught to the opening intercommunication, it includes rotating part and fixed part to catch the gas channel, the rotating part with the tip detachable fixed connection of gas collecting pipe, the fixed part with the volatile gaseous entrapment device is connected, the slide rail set up in the casing bottom, install the locating piece on the slide rail.
2. An indoor air detector as claimed in claim 1, wherein: the air detector still includes driving motor, driving motor includes motor body, pivot and gear train, the gear train with the pivot is connected, the gear train with the rotating part cooperation is connected, is used for the drive the rotating part.
3. An indoor air detector as claimed in claim 1, wherein: a plurality of positioning blocks are installed on the sliding rail, and the volatile gas trapping device is installed between every two adjacent positioning blocks.
4. An indoor air detector as claimed in claim 1, wherein: the shell is provided with a circulating air exchange channel, a fan is installed in the circulating air exchange channel, the circulating air exchange channel is connected with the fixing part, a through hole is formed in the fixing part, and the circulating air exchange channel is communicated with the air trapping channel through the through hole.
5. An indoor air detector as claimed in claim 4, wherein: and a communicating valve is arranged on the circulating air exchange channel and is used for communicating the circulating air exchange channel with the gas trapping channel or closing the circulating air exchange channel with the gas trapping channel.
6. An indoor air detector as claimed in claim 1, wherein: the volatile gas trapping device comprises a tank body and a piston, wherein the piston is connected with the inner wall of the tank body in a sliding manner, an accommodating cavity is formed between the tank body and the piston, an air inlet which penetrates through the wall surface of the tank body and is communicated with the accommodating cavity is formed in the wall surface of the tank body, a first filtering layer is arranged at the air inlet, and the filtering layer covers the air inlet; the inner wall of the tank body is provided with an annular boss along the air inlet, the first annular boss and the tank body are integrally arranged, an annular groove is further arranged in the tank body, the opening direction of the annular groove is opposite to that of the annular boss and surrounds the outer side of the annular boss, a rotary and communicated air inlet channel is formed between the annular boss and the annular groove, and an adsorbing material for adsorbing the volatile gas is contained in the air inlet channel; the internal second filter layer that is provided with of jar, the second filter layer pass through the connecting piece with fixed connection can be dismantled to jar body wall, the annular groove bottom through a connecting rod with second filter layer fixed connection.
7. An indoor air detector as claimed in claim 6, wherein: the adsorbing materials are polystyrene-divinylbenzene adsorbing resin particles, ion exchange resin particles, polycyclic aromatic hydrocarbon particles and nitrosamine particles.
8. An indoor air detector as claimed in claim 6, wherein: the tank body is cylindrical.
9. An indoor air detector as claimed in claim 1, wherein: the gas collecting pipe comprises a gas collecting pipe body, a gas collecting cover and a plurality of gas introducing pipes, wherein a first gas introducing port, a plurality of second gas introducing ports and a third gas introducing port are formed in the gas collecting cover, one gas collecting cavity communicated with the first gas introducing port, the second gas introducing port and the third gas introducing port are formed in the gas collecting cover, one end of the gas collecting pipe body is communicated with the first gas introducing port, the gas collecting cavity is provided with a plurality of gas introducing pipes, one end of each gas introducing pipe is communicated with the corresponding second gas introducing port, the other end of each gas introducing pipe is sealed, and the gas introducing pipes are provided with gas introducing holes penetrating through the wall surfaces of the gas introducing pipes along the normal direction of the axes of the gas introducing pipes.
10. An indoor air detector as claimed in claim 9, wherein: the gas collecting cover is cylindrical, and the first gas introducing port is formed in the axis of the gas collecting cover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911024722.XA CN110658312A (en) | 2019-10-25 | 2019-10-25 | Indoor air detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911024722.XA CN110658312A (en) | 2019-10-25 | 2019-10-25 | Indoor air detector |
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| CN110658312A true CN110658312A (en) | 2020-01-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684104A (en) * | 2020-12-01 | 2021-04-20 | 浙江中通检测科技有限公司 | Device for detecting volatile organic compounds in atmosphere and using method thereof |
| CN117647424A (en) * | 2024-01-29 | 2024-03-05 | 潍坊德尔粉体设备技术有限公司 | Dust collection device and method thereof |
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Application publication date: 20200107 |