CN206411008U - A kind of dust amount detecting device of the screen pack of VMC - Google Patents
A kind of dust amount detecting device of the screen pack of VMC Download PDFInfo
- Publication number
- CN206411008U CN206411008U CN201720064462.9U CN201720064462U CN206411008U CN 206411008 U CN206411008 U CN 206411008U CN 201720064462 U CN201720064462 U CN 201720064462U CN 206411008 U CN206411008 U CN 206411008U
- Authority
- CN
- China
- Prior art keywords
- screen pack
- transmitting set
- vmc
- optical
- optical transmitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of dust amount detecting device of the screen pack of VMC, it includes lower fixed frame, upper holder, optical transmitting set frame, optical transmitting set and optical receiver, lower fixed frame and upper holder are arranged in VMC, screen pack to be detected is located between lower fixed frame and upper holder, lower fixed frame is provided with optical transmitting set, upper holder is provided with optical receiver, optical transmitting set and optical receiver are respectively provided at screen pack two ends, and the luminous intensity that the optical transmitting set received by optical receiver is launched carries out the amount of dust of detection screen pack.Optical transmitting set uses the LED/light source that current driving circuit drives, and optical receiver, which is used, converts optical signals to the photoelectric tube of electric signal for light-receiving component.Whether the utility model detects that accuracy of detection is high using optical transmitting set and optical receiver to the dust of screen pack, can be very good to need cleaning to provide reliable reference and foundation for the screen pack in VMC, it is ensured that the using effect of VMC.
Description
Technical field
The utility model is related to a kind of dust amount detecting device of the screen pack of VMC, belongs to the detection of screen pack dust
Technical field.
Background technology
A set of independent air processing system that VMC is made up of supply air system and exhaust system, it is divided into duct type
VMC and without two kinds of pipeline VMC.Duct type VMC is made up of new blower fan and pipe fitting, passes through new blower fan
Clean room outer space conductance enters interior, is discharged room air by pipeline；Without pipeline VMC by new blower fan and the precious group of breathing
Into equally by new blower fan clean room, outer space conductance enters interior, while being discharged foul indoor air by breathing treasured.Comparatively manage
Road formula VMC is used because quantities is more suitable for greatly industrial or large area Office Area, and without pipeline VMC because peace
Dress is convenient, is more suitable for family and uses.
Either which kind of VMC, in order to ensure the air cleaner got in, is generally required inside VMC
Screen pack is set, and internal screen pack after time length, can make it that air purification effect is deteriorated, influence in VMC
The effect of VMC, this is accomplished by cleaning screen pack, still, when being cleaned to the screen pack in VMC,
It is cumbersome, therefore, preferably the amount of dust on screen pack is detected in real time, so as to judge whether to need to carry out it
Cleaning, accordingly, it would be desirable to a kind of dust amount detecting device of screen pack be designed, to realize in real time to VMC filtering net ash
The detection of dirt, so that the cleaning for screen pack provides directive function with changing.
The content of the invention
There is provided a kind of dust amount detection device of the screen pack of VMC for existing technical problem for the utility model
Put, it is therefore an objective to realize the detection in real time to VMC filtering net dust, so that the cleaning for screen pack refers to changing to provide
Effect is led, the problem of prior art is present is intended to solve.
To achieve the above object, the utility model provides following technical scheme：A kind of dust of the screen pack of VMC
Amount detecting device, it includes lower fixed frame, upper holder, optical transmitting set frame, optical transmitting set and optical receiver, wherein, it is described
Lower fixed frame and upper holder are arranged in VMC, and screen pack to be detected is arranged on the lower fixed frame and upper fixation
Set up to be equipped with by optical transmitting set between frame, on the lower fixed frame and be provided with light on optical transmitting set, described upper holder and connect
Device is received, described optical transmitting set and the optical receiver are separately positioned on the two ends of described screen pack, pass through the light-receiving
The luminous intensity that the optical transmitting set that device is received is launched carries out the amount of dust of detection screen pack.
Further, preferably, described optical transmitting set uses LED light sources, and LED/light source uses current driving circuit
It is driven.
Further, preferably, the optical receiver, which is used, converts optical signals to the photoelectric tube of electric signal for light-receiving
Component.
Further, preferably, the line between the center of optical transmitting set and the center of optical receiver is just past described
The center of screen pack.
Compared with prior art, the beneficial effects of the utility model are：
The utility model detects that accuracy of detection is high, can using optical transmitting set and optical receiver to the dust of screen pack
Whether to need cleaning to provide reliable reference and foundation for the screen pack in VMC well, it is ensured that VMC
Using effect.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the dust amount detecting device of the screen pack of VMC of the present utility model；
Fig. 2 is a kind of circuit of the optical transmitting set of the dust amount detecting device of the screen pack of VMC of the present utility model
Structural representation；
Fig. 3 is a kind of circuit of the optical receiver of the dust amount detecting device of the screen pack of VMC of the present utility model
Structural representation；
Wherein, 1, lower fixed frame, 2, upper holder, 3, screen pack, 4, optical transmitting set frame, 5, optical transmitting set, 6, light-receiving
Device.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Referring to Fig. 1, the utility model provides a kind of technical scheme：A kind of amount of dust detection of the screen pack of VMC
Device, it includes lower fixed frame 1, upper holder 2, optical transmitting set frame 4, optical transmitting set 5 and optical receiver 6, wherein, it is described under
Fixed mount 1 and upper holder 2 are arranged in VMC, and screen pack 3 to be detected is arranged on the lower fixed frame 1 and upper solid
Determine between frame 2, be provided with optical transmitting set 5, described upper holder 3 and set by optical transmitting set frame 4 on the lower fixed frame 2
There is optical receiver 6, described optical transmitting set 5 and the optical receiver 6 is separately positioned on the two ends of described screen pack 3, passed through
The luminous intensity that the optical transmitting set that the optical receiver is received is launched carries out the amount of dust of detection screen pack.
In the present embodiment, as shown in Fig. 2 described optical transmitting set uses LED light sources, and LED/light source is driven using electric current
Dynamic circuit is driven.Wherein, during LED/light source D0 is serially connected in the c of triode extremely, R3 is accurate adjustable resistance, passes through R3
Base bias voltage is adjusted, D1 carries out clamping protection using 2. 5 V voltage-regulator diodes, it is ensured that triode normal work all the time, no
LED can be damaged because R3 adjustment is excessive or too small.The mA of LED operation electric current, i.e. triode c electrode currents Ic=20, using common
NPN pipes can meet requirement, improve circuit reliability.
As shown in figure 3, the optical receiver, which is used, converts optical signals to the photoelectric tube of electric signal for light-receiving component.Light
Fulgurite uses PT4113202 light-receiving components, and the optical signal of light-receiving is changed into electric signal output, and R0 test points, which are used to monitor, to be believed
Number.It is -36 dBm or so that actual test, which receives level, and carrier-to-noise ratio value is 42dB because the electric signal of PT outputs it is weaker, it is necessary to
Further amplification.Because signal noise is mainly produced by first order amplifying circuit, signal to noise ratio of its noise level to whole circuit
Play a decisive role, therefore to select low-noise device as far as possible in the present embodiment, therefore, the utility model employs noise system
Number is less than 1dB, and cut-off frequency is the AT415233 triodes composition first order total radio amplifier of 3 GHz Hewlett-Packard Corporation, amplification
Factor beta=90, each operating point is by repeatedly calculating and testing, it is ensured that circuit is operated in linear amplification region, and noise is minimum.Light connects
Receive component to complete after opto-electronic conversion, RF signals are coupled to by triode AT415233 by electric capacity C22, constitute high resistant input and put
Big circuit, C5 completes high end frequency compensation, and R11, R22, R33 constitutes base bias circuit, and R33 is in parallel with C4, plays broadening letter
The effect of number bandwidth.It is coupled to and is penetrated by what 2SC3357 triodes were constituted with circuit by electric capacity C6 after signal amplification.This circuit
Powered using -12 V, electric capacity C8, C9 strobe, inductance L3 plays buffer action, it is to avoid amplifying circuit is too high due to gain
And interact.Because circuit work frequency is higher, device all uses surface mount mode, to reduce the influence of distributed constant.
When calculating amount of dust, only need to according to reality, set light quantity that amount of dust and optical receiver receive it
Between corresponding relation, you can the optical oomputing received according to optical receiver goes out amount of dust.
In addition, for the amount of dust on the detection screen pack of maximum magnitude, in the center and optical receiver of optical transmitting set
The center of line between the heart just past the screen pack.
The utility model detects that accuracy of detection is high, can using optical transmitting set and optical receiver to the dust of screen pack
Whether to need cleaning to provide reliable reference and foundation for the screen pack in VMC well, it is ensured that VMC
Using effect.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and spirit a variety of changes, repaiies
Change, replace and modification, scope of the present utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of dust amount detecting device of the screen pack of VMC, it includes lower fixed frame, upper holder, optical transmitting set
Frame, optical transmitting set and optical receiver, wherein, described lower fixed frame and upper holder is arranged in VMC, and to be detected
Screen pack be arranged between the lower fixed frame and upper holder, on the lower fixed frame by optical transmitting set set up be equipped with light
Optical receiver is provided with transmitter, described upper holder, described optical transmitting set and the optical receiver are separately positioned on
The two ends of described screen pack, the luminous intensity that the optical transmitting set received by the optical receiver is launched carries out detection filtering
The amount of dust of net.
2. a kind of dust amount detecting device of the screen pack of VMC according to claim 1, it is characterised in that：It is described
Optical transmitting set use LED light sources, and LED/light source is driven using current driving circuit.
3. a kind of dust amount detecting device of the screen pack of VMC according to claim 1, it is characterised in that：It is described
Optical receiver, which is used, converts optical signals to the photoelectric tube of electric signal for light-receiving component.
4. a kind of dust amount detecting device of the screen pack of VMC according to claim 1-3 any one, it is special
Levy and be：The center of line between the center of optical transmitting set and the center of optical receiver just past the screen pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720064462.9U CN206411008U (en) | 2017-01-19 | 2017-01-19 | A kind of dust amount detecting device of the screen pack of VMC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720064462.9U CN206411008U (en) | 2017-01-19 | 2017-01-19 | A kind of dust amount detecting device of the screen pack of VMC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206411008U true CN206411008U (en) | 2017-08-15 |
Family
ID=59557013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720064462.9U Expired - Fee Related CN206411008U (en) | 2017-01-19 | 2017-01-19 | A kind of dust amount detecting device of the screen pack of VMC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206411008U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056443A1 (en) * | 2017-09-20 | 2019-03-28 | 安费诺(常州)连接系统有限公司 | Sensor and method for detecting dust retention of filter |
-
2017
- 2017-01-19 CN CN201720064462.9U patent/CN206411008U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019056443A1 (en) * | 2017-09-20 | 2019-03-28 | 安费诺(常州)连接系统有限公司 | Sensor and method for detecting dust retention of filter |
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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: 20170815 Termination date: 20180119 |