CN206725301U - The flow monitor of air sampling detector - Google Patents
The flow monitor of air sampling detector Download PDFInfo
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- CN206725301U CN206725301U CN201720281282.6U CN201720281282U CN206725301U CN 206725301 U CN206725301 U CN 206725301U CN 201720281282 U CN201720281282 U CN 201720281282U CN 206725301 U CN206725301 U CN 206725301U
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- Prior art keywords
- aspiration pump
- air
- controller
- rotating speed
- sampling line
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Abstract
A kind of flow monitor of air sampling detector, it includes：One sampling line；One air detectors, has a sample entrance port and a sample exit port, and the sample entrance port connects with the sampling line；One aspiration pump, it is connected with the sampling line, the aspiration pump has a rotating speed output end；One controller, it is electrically connected with respectively with the rotating speed output end of the air detectors and aspiration pump, a comparing module and a storage module are provided with the controller, the rated speed numerical value for representing the pumping revolution speed of the sampling line in normal state is stored in the storage module；Whereby, aspiration pump of the present utility model can have the function of pumping blower fan and flowmeter concurrently simultaneously, need additionally to set the flowmeter of other patterns rather than existing air sampling detector, and need to only use single individual aspiration pump and can complete the detection of flow, and then can reach and significantly simplify the effect of overall structure is with reducing production cost.
Description
Technical field
A kind of air sampling detector is the utility model is related to, is examined especially with regard to a kind of flow velocity of air sampling detector
Survey device.
Background technology
Air sampling detector is usually certain (a little) specific thing in a kind of detectable or one protected field of monitoring air
The equipment of matter or the change in concentration of composition, when the content of the material or composition exceeds certain numerical value, the air sampling detector
Alarm, air sampling smoke detector of the specific example as being used for fire early warning can be sent（Air Sampling
Smoke Detector, or Aspirating Smoke Detector, abbreviation ASD）Or the oxidation for preventing poisoning
Carbon detector etc., refer to Fig. 1 and show a kind of existing air sampling detector, it utilizes and is arranged in sampling line 11
Fan 13 air sample in the region to be monitored is extracted into the air detectors 14 of the air sampling detector and examined
Survey, when testing result judges air sample exception, the i.e. transmittable control letter of main control board 15 of the air sampling detector
Number to alarm device 16, and the alarm device 16 is sent a warning, such as warn cresset or the sound.
Please continue to refer to shown in Fig. 1, existing air sampling detector can also be provided with flow in the sampling line 11 and pass
Sensor（flow sensor）12（Or flowmeter）, distinguished according to the operating principle of sensing, the flow sensor 12 specifically can be with
It is thermal mass formula flowmeter or ultrasonic flowmeter, the flow sensor 12 is detecting and monitor the sky in the sampling line 11
The flow of gas sample sheet, when the flow of the air sample is too low, it is possible to represent the sampling line 11 occur it is abnormal such as rupture or
Block, the normal operation of the air sampling detector will be so influenceed, so now the alarm device 16 can equally send police
Which kind of notify breath, to remind related personnel to go to the state of censored sample pipeline 11, however, whether being passed using the flow of form
Sensor 12, it is a part for needing additionally to set for existing air sampling detector, will so causes the sky
The overall structure of gas sampling detector is complex and improves its production cost；In addition, thermal mass formula flowmeter also there are appearance
It is vulnerable to（Gas）Temperature and the problem of influence measuring value；In addition, the physical quantity and flow of its sensing of above-mentioned existing flowmeter
Cause all to be limited in terms of the number range of detection and accuracy there is nonlinear saturation effect mostly between value
System.
In addition, China Patent Publication No. CN103452887A《Flow detection sensor and smog with the sensor are net
Change filtration system》A kind of Hall subassembly by flow fan and the turnning circle for detecting the flow fan is disclosed to be formed
Flow detection sensor, and whether blocked come the filtering element (cartridge) checked in fume cleaning filtration system by the flow detection sensor
And whether should change, however, the flow fan in itself and can not additional power source, thus can not active rotation, the inspection of such a flow
Simply a kind of existing airspeedometer from the point of view of surveying sensor individually, on engineer applied, it must additionally arrange in pairs or groups, and another can lead
The dynamic blower fan of turn（Or fan）Competence exertion detection function, consequently, it is possible to product integrally can still exist structure it is more complicated and into
The problem of this is higher；In addition, when the flow that such a flow detection sensor measures is too low, it will it is pipe that bottom can not be determined by, which having,
Road is abnormal（For air sampling detector）, filtering element (cartridge) block（For fume cleaning filtration system）Or failure of the blower fan itself
How problem, therefore, improved for disadvantages mentioned above, where the technical difficulties that as inventor to be solved.
Utility model content
In view of the disadvantages mentioned above of existing air sampling detector, therefore the purpose of this utility model is to develop one kind
Structure can be simplified and reduce the air sampling detector of manufacturing cost.
Another object of the present utility model is to be to develop a kind of sky that can effectively differentiate pipeline exception and fan exception
Gas sampling detector.
To reach the above object, the utility model provides a kind of flow monitor of air sampling detector, and it is wrapped
Include：One sampling line；One air detectors, there is a sample entrance port and a sample exit port, the sample entrance port and the sampling line
Connection；One aspiration pump, it is connected with the sampling line, the aspiration pump has a rotating speed output end；One main control board, master control electricity
Road plate is provided with a controller, and the controller is electrically connected with the rotating speed output end of the air detectors and aspiration pump respectively, should
A comparing module and a storage module are provided with controller, is stored in the storage module and represents the sampling line in normal shape
The rated speed numerical value of pumping revolution speed under state；Wherein, rotating speed output end of the controller real-time reception from the aspiration pump
The tach signal exported, and the tach signal is converted into speed revolution value, the comparing module is normal with this by the speed revolution value
Speed revolution value compares, and when both differences exceed predetermined proportion or numerical value, the controller is externally sent control
Signal processed.
Wherein, the aspiration pump is the aspiration pump of 3PIN or 4PIN patterns.
Wherein, the aspiration pump is fan, air blower or pumping pumping.
Wherein, the flow monitor of the air sampling detector also includes an output device, the output device and control
Device is electrically connected with.
In addition, the utility model also provides a kind of flow monitor of air sampling detector, it includes：One probe tube
Road；One air detectors, has a sample entrance port and a sample exit port, and the sample entrance port connects with the sampling line；One pumping
Pump, it is connected with the sampling line；One Rotating speed measring circuit, it is electrically connected with the aspiration pump；One main control board, the governor circuit
Plate is provided with a controller, and the controller is electrically connected with the air detectors and Rotating speed measring circuit respectively, in the controller
Provided with a comparing module and a storage module, stored in the storage module and represent the sampling line taking out in normal state
The rated speed numerical value of air pump rotating speed；Wherein, the rotating speed letter that the controller real-time reception is exported from the Rotating speed measring circuit
Number, and the tach signal is converted into speed revolution value, the comparing module compares the speed revolution value with the rated speed numerical value,
And when both differences exceed predetermined proportion or numerical value, the controller is set externally to send control signal.
Wherein, the aspiration pump is the aspiration pump of 2PIN patterns.
Wherein, the aspiration pump is fan, air blower or pumping pumping.
Wherein, the flow monitor of the air sampling detector also includes an output device, the output device and control
Device is electrically connected with.
Whereby, aspiration pump of the present utility model can have the function of pumping blower fan and flowmeter concurrently simultaneously, rather than existing
Air sampling detector needs additionally to set the flowmeter of other patterns, and need to only use single individual aspiration pump and can complete flow
Detection, and then can reach significantly simplify overall structure with reduce production cost the effect of.
Brief description of the drawings
Fig. 1：The structural representation of existing air sampling detector；
Fig. 2：The structural representation of first embodiment of the present utility model；
Fig. 3：The structural representation of second embodiment of the present utility model；
Fig. 4：Schematic diagram before the action of first embodiment of the present utility model；
Fig. 5：Schematic diagram after the action of first embodiment of the present utility model.
Description of reference numerals
（Prior art）
The flow sensor of 11 sampling line 12
The air detectors of 13 fan 14
The alarm device of 15 main control board 16
（The utility model）
The aspiration pump of 2 sampling line 3
The rotating speed output end of 31 electrical power source connection 32
The sample entrance port of 4 air detectors 41
The main control board of 42 sample exit port 5
The comparing module of 51 controller 511
The Rotating speed measring circuit of 512 storage module 6
7 output devices.
Embodiment
Refer to shown in Fig. 2, it is the first embodiment of air sampling detector of the present utility model, and it includes：
One sampling line 2, to be connected to a region to be monitored, with by obtaining air sample in the region or space,
Here, connected mode can be directly connected to, i.e., integrally extended in the region by the sampling line 2 itself, or, connection side
Formula can also be indirectly connected with, i.e., the sampling line outside one is reconnected by the sampling line 2（Such as soft plastic lined piping,
It is not shown）, then by sampling line extension configuration to the region；
One air detectors 4, the air detectors 4 connect with sampling line 2, to receive and judge that the air sample is
No exception, the air detectors 4 have a sample entrance port 41 and a sample exit port 42, the sample entrance port 41 and sampling line 2
Connection, with air sampling smoke detector（ASD）Exemplified by, in the air detectors 4 would generally include a luminescence component and one by
Optical assembly（Or inspection optical assembly）, its using smokescope height can influence light-receiving module receive luminescence component signal principle come
Smokescope monitoring is carried out, still, minute structure and operating principle inside the air detectors 4 belong to generally knowing for this area
Know and where non-this case inventive point, therefore be not described in detail herein；
One aspiration pump 3, the aspiration pump 3 are connected with the sampling line 2, for providing air sample by the region to be monitored
The auxiliary power detected inside the air detectors 4 is pumped to, the aspiration pump 3 is specially fan, air blower or other are each
The pumping pumping of formula, the aspiration pump 3 is provided with an electrical power source connection 31, to connect an external power source, is transported with obtaining the aspiration pump 3
Turn required electric power, the electrical power source connection 31 typically has positive and negative both ends, also, the aspiration pump 3 is provided with a rotating speed output end
32, to export the tach signal for representing the rotating speed of aspiration pump 3, if on the other hand, being distinguished according to the pattern of existing aspiration pump 3, substantially
There are a variety of patterns such as 2PIN, 3PIN and 4PIN, wherein, 3PIN aspiration pump 3 is except with for connecting the power supply of external power source
Anode and ground wire（GND, i.e. power supply negative terminal）Outside two lines, also with a tach signal（tachometer
signal）Output line, and 4PIN aspiration pump 3 then further PWM more（Pulse Width Modulation, arteries and veins
Wave width modulation）Rotating speed control line, the pwm control signal outside receiving is can be used to, to change the rotating speed of the aspiration pump 3, thus
It can be seen that the aspiration pump 3 of existing 3PIN or 4PIN patterns has possessed electrical power source connection 31 and the rotating speed needed for the utility model
Output end 32, thus, depicted aspiration pump 3 specifically can be using existing 3PIN's or 4PIN in the present embodiment and Fig. 2
Aspiration pump product（Such as fan）To realize；If in addition, for existing 2PIN aspiration pump product, because it only possesses power supply
Positive and negative end（That is, it only realizes electrical power source connection 31 of the present utility model, but and do not have a ready-made rotating speed output end
32）, now, please also refer to shown in Fig. 3, being second embodiment of the present utility model, it is evacuated suitable for existing 2PIN
Pump product, wherein, a Rotating speed measring circuit 6 can be further comprised, and the Rotating speed measring circuit 6 is connected with the aspiration pump 3, to
The tach signal for representing the rotating speed of aspiration pump 3 is detected and exports, here, the Rotating speed measring circuit 6 can use commercially available fan to turn
Fast detection chip, such as join the IT8712F chips of positive semiconductor, consequently, it is possible to which the utility model can also use 2PIN wind
Product is fanned to realize, whereby, the utility model is not only restricted to the hardware condition of fan product of existing different types, so as to
The scope of application can be expanded；Further, since remaining composition component and first embodiment of second embodiment of the present utility model can be with
Say it is the same, mainly structure of the present utility model will be illustrated with acting using first embodiment and Fig. 2 as example is represented below
Principle；
One main control board 5, the main control board 5 is provided with a controller 51, such as microcontroller
（Microcontroller Unit, MCU）51, the controller 51 rotating speed output end 32 and air detection with aspiration pump 3 respectively
Device 4 is electrically connected with, in addition, referring again to shown in Fig. 3, for 2PIN aspiration pump 3, the controller 51 then with Rotating speed measring electricity
Road 6 is electrically connected with, also, is provided with a comparing module 511 and a storage module 512 in the controller 51；
One output device 7, the controller 51 of the output device 7 and the main control board 5 are electrically connected with, the output device 7
Can be specifically display device, such as screen or display lamp, the output device 7 can also be alarm device, such as loudspeaker or warning lamp.
Illustrate working principle and beneficial effect of the present utility model briefly below：Please refer to shown in Fig. 2 and Fig. 4, when
After the utility model is installed to the region to be monitored for the first time, because now the sampling line 2 is normally without damage, operating personnel
The aspiration pump 3 can be started, now the rotating speed output end 32 of the aspiration pump 3 can export and transmit representative in the sampling line 2
For the controller 51 of the rated speed signal under normal condition to the main control board 5, the controller 51 can be by the rated speed
Signal is converted to rated speed numerical value, such as the rated speed numerical value after conversion is 10000rpm, represents that the aspiration pump 3 is sampling
For rotating speed when pipeline 2 is normal up to 10000 turns per minute, the rated speed numerical value can be sent to the storage by the controller 51 again
Module 512 stores, here, the air sample flow after the rated speed numerical value as assessment in the sampling line 2 is
No abnormal reference data value, next, please also refer to shown in Fig. 5, such as rupture or block up when exception occurs in the sampling line 2
During plug, now the tachometer value for the tach signal that the rotating speed output end 32 of the aspiration pump 3 exports will necessarily change, and be blocked up with pipeline
Exemplified by plug, now the tachometer value of the fan 3 would generally reduce, such as only be left 7900rpm, therefore, the comparison of the controller 51
Module 511 can be obtained the rated speed numerical value i.e. 10000rpm originally stored by the storage module 512, then by the rated speed number
Value is compared with speed revolution value measured during pipeline blockage, if both differences exceed predetermined proportion or number
During value（For example, difference exceeds more than the 20% of the rated speed numerical value, in this example, 10000-7900=2100, exceed
The 20% of 10000（I.e. 2000）, the big I of this predetermined proportion or numerical value actually needs according to user or detection sensitivity etc.
Ask and adjust change）, now the controller 51 is that can transmit control signal to the output device 7, makes the output device 7 generation pair
The information answered, for example, speed revolution value when showing abnormal light corresponding to failure cresset or sound the alarm ring etc.,
So as to remind related personnel to go to the state of censored sample pipeline 2.Here, it is noted that the utility model is arranged on
During different monitoring area, it may be necessary in response to the environmental condition of different places（Such as space size, atmospheric pressure state）, and adjust
The hardware parameters such as the caliber size and length of homogeneous tube line, consequently, it is possible to which even if the supply voltage size of the aspiration pump 3 is fixed
, its actual rated speed numerical value still can be different according to space enrironment and the mounting condition of reality, can not without exception and
By therefore, the utility model is by using on the spot and in real time（In real time）The mode of detection produces the rated speed numerical value, rather than
General numerical value is preset, will can improve adaptability of the product for different application environment, so as to improve abnormality alarm
Reliability and the accuracy of detection.
Refer to shown in Fig. 2, when sampling line 2 in normal state, the rotating speed of aspiration pump 3 can influence the stream of air sample
Amount, if now sampling line 2 occurs abnormal such as rupture or blocked, the changes in flow rate of its caused air sample then can be in turn
The rotating speed of the aspiration pump 3 in the active rotation is influenceed, using afore-mentioned characteristics and principle, by detecting the rotating speed of aspiration pump 3 in real time,
Reach in the utility model in essence by the use of aspiration pump 3 as flowmeter to detect, monitor the purpose of the state of sampling line 2, also
That is, the aspiration pump 3 by can simultaneously with script pumping blower fan and extra flowmeter function, consequently, it is possible to this practicality
It is new unlike existing air sampling detector needs additionally to set the flowmeter of other patterns, and need to only use single pumping
Pump 3 can complete the detection of flow, and then can reach and significantly simplify the effect of overall structure is with reducing production cost；In addition, by
Rotating speed when 3 failure of aspiration pump is 0, therefore being reduced with the rotating speed of aspiration pump 3 caused when abnormal of sampling line 2 still has significantly
Difference, therefore the utility model still can effectively differentiate pipeline exception or aspiration pump 3 is abnormal, so as to more preferably practical
Property.
Claims (8)
1. a kind of flow monitor of air sampling detector, it is characterised in that it includes：
One sampling line；
One air detectors, has a sample entrance port and a sample exit port, and the sample entrance port connects with the sampling line；
One aspiration pump, it is connected with the sampling line, the aspiration pump has a rotating speed output end；
One main control board, the main control board are provided with a controller, the controller respectively with the air detectors and pumping
The rotating speed output end of pump is electrically connected with, and a comparing module and a storage module are provided with the controller, is stored up in the storage module
There is the rated speed numerical value for representing the pumping revolution speed of the sampling line in normal state；
Wherein, the tach signal that rotating speed output end of the controller real-time reception from the aspiration pump is exported, and by the rotating speed
Signal is converted into speed revolution value, and the comparing module compares the speed revolution value with the rated speed numerical value, and in both differences
When value exceeds predetermined proportion or numerical value, the controller is set externally to send control signal.
2. the flow monitor of air sampling detector as claimed in claim 1, it is characterised in that the aspiration pump is 3PIN
Or the aspiration pump of 4PIN patterns.
3. the flow monitor of air sampling detector as claimed in claim 1, it is characterised in that the aspiration pump is wind
Fan, air blower or pumping pumping.
4. the flow monitor of air sampling detector as claimed in claim 1, it is characterised in that also including an output dress
Put, the output device is electrically connected with the controller.
5. a kind of flow monitor of air sampling detector, it is characterised in that it includes：
One sampling line；
One air detectors, has a sample entrance port and a sample exit port, and the sample entrance port connects with the sampling line；
One aspiration pump, it is connected with the sampling line；
One Rotating speed measring circuit, it is electrically connected with the aspiration pump；
One main control board, the main control board are provided with a controller, the controller respectively with the air detectors and rotating speed
Detect circuit to be electrically connected with, be provided with a comparing module and a storage module in the controller, generation is stored in the storage module
The rated speed numerical value of the pumping revolution speed of the table sampling line in normal state；
Wherein, the tach signal that the controller real-time reception is exported from the Rotating speed measring circuit, and the tach signal is turned
Change speed revolution value into, the comparing module compares the speed revolution value with the rated speed numerical value, and exceeds in both differences
When predetermined proportion or numerical value, the controller is set externally to send control signal.
6. the flow monitor of air sampling detector as claimed in claim 5, it is characterised in that the aspiration pump is 2PIN
The aspiration pump of pattern.
7. the flow monitor of air sampling detector as claimed in claim 5, it is characterised in that the aspiration pump is wind
Fan, air blower or pumping pumping.
8. the flow monitor of air sampling detector as claimed in claim 5, it is characterised in that also including an output dress
Put, the output device is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720281282.6U CN206725301U (en) | 2017-03-21 | 2017-03-21 | The flow monitor of air sampling detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720281282.6U CN206725301U (en) | 2017-03-21 | 2017-03-21 | The flow monitor of air sampling detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206725301U true CN206725301U (en) | 2017-12-08 |
Family
ID=60502472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720281282.6U Expired - Fee Related CN206725301U (en) | 2017-03-21 | 2017-03-21 | The flow monitor of air sampling detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206725301U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838694A (en) * | 2019-01-02 | 2019-06-04 | 固安京蓝云科技有限公司 | The monitoring method and device of irrigation pipeline |
| CN114370730A (en) * | 2020-10-15 | 2022-04-19 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
-
2017
- 2017-03-21 CN CN201720281282.6U patent/CN206725301U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838694A (en) * | 2019-01-02 | 2019-06-04 | 固安京蓝云科技有限公司 | The monitoring method and device of irrigation pipeline |
| CN109838694B (en) * | 2019-01-02 | 2021-02-02 | 好农易电子商务有限公司 | Method and device for monitoring irrigation pipeline |
| CN114370730A (en) * | 2020-10-15 | 2022-04-19 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20200321 |