CN202033271U - Laser dust particle counter - Google Patents
Laser dust particle counter Download PDFInfo
- Publication number
- CN202033271U CN202033271U CN2011201076921U CN201120107692U CN202033271U CN 202033271 U CN202033271 U CN 202033271U CN 2011201076921 U CN2011201076921 U CN 2011201076921U CN 201120107692 U CN201120107692 U CN 201120107692U CN 202033271 U CN202033271 U CN 202033271U
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- Prior art keywords
- power supply
- power
- supply
- electric
- dust particle
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Abstract
The utility model relates to a laser dust particle counter which comprises a sampling device, a light source, a measuring cavity, a photodetector and a circuit system as well as a direct current inverter power supply device. The direct current inverter power supply device comprises a power supply controller, a lithium battery, a charger and a switching power supply, wherein the power supply controller is used for supplying power for the sampling device and the circuit system, and the lithium battery is capable of supplying power for the power supply controller; and the charger is used for charging the lithium battery, an output end of the switching power supply is connected with a phase circuit of the power supply controller, an input end can supply power for the power supply controller by being connected with an external alternating current power supply and converting the alternating current into direct current. Through the arrangement, the laser dust particle counter can supply power for the sampling device and the circuit system through two manners: a direct current power supply and an alternating current power supply, and can realize large current sampling under the condition of no external alternating current power supply, thus being more flexible and convenient for use of an instrument.
Description
Technical field
The utility model relates to a kind of laser dust particle counter, is specifically related to a kind of DC frequency-changing electric supply installation of laser dust particle counter
Background technology
Laser dust particle counter is used for measuring dust particle size and the number in the clean environment unit volume air, and it is widely used in departments such as electronics, optics, chemistry, food, cosmetics, medical and health, biological products, Aero-Space.
Existing laser dust particle counter is made up of sampling apparatus, light source, measurement chamber, photodetector and Circuits System etc. usually.Wherein, sampling apparatus comprises air pump and filtrator etc., and it is used for gathering gaseous sample to be measured and produces sampling flow (sampling flow is generally between 2.83L/min～28.3L/min); Light source is used for producing laser; Measuring the chamber is the space of carrying out particulate observation, and the gaseous sample of being gathered will pass from measuring the chamber; Photodetector is to be used for scattered energy is converted to the electrooptical device of electric signal; Circuits System is used for then that electric impulse signal with various different amplitudes amplifies, examination and counting etc., and Circuits System is powered by electric supply installation.
Existing big flow laser dust particle counter is because sampling flow big (as 28.3L/min), need to adopt powerful sampling pump sampling, and this generally speaking high-power sampling pump is to use AC-powered, therefore when big flow laser dust particle counter is worked, must guarantee that the detection scene can provide AC power, and guaranteeing the power lead long enough, this has caused certain restriction for the work of laser dust particle counter.And for the detection scene that is difficult to obtain alternating current, laser dust particle counter then can not be worked
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of improved laser dust particle counter is provided, and it also can realize the sampling of big flow under the situation of no external AC power supply power supply.
For solving above technical matters, the utility model is taked following technical scheme:
A kind of laser dust particle counter, comprise sampling apparatus, light source, measurement chamber, photodetector and Circuits System, according to the utility model, described laser dust particle counter also comprises the DC frequency-changing electric supply installation, and described DC frequency-changing electric supply installation comprises the power-supply controller of electric that is used to sampling apparatus and Circuits System power supply; Be connected with described power-supply controller of electric circuitry phase and can be described power-supply controller of electric direct current power source supplying power; Output terminal is connected with described direct supply circuitry phase, input end can be the charger of described direct supply charging by linking to each other with external AC power supply; Output terminal is connected with described power-supply controller of electric circuitry phase, input end can be by linking to each other with external AC power supply and alternating current being converted to direct current and then being power-supply controller of electric powered switch power supply.
Preferably, described direct supply is a lithium battery.
Preferably, described power-supply controller of electric provides alternating current for sampling apparatus, and provides direct current for Circuits System.
Preferably, the input end of Switching Power Supply is in parallel with the input end of charger and is connected.
Because the enforcement of above technical scheme, the utility model compared with prior art has following advantage:
The utility model laser dust particle counter is owing to be provided with the DC frequency-changing electric supply installation, make that this laser dust particle counter can be sampling apparatus and Circuits System power supply by direct supply and two kinds of forms of AC power, can under the situation of no external AC power supply, realize the sampling of big flow, make the use of instrument more flexible.
Description of drawings
The utility model is described in more detail below in conjunction with accompanying drawing and concrete embodiment:
Fig. 1 is the fundamental diagram of the DC frequency-changing electric supply installation of the utility model laser dust particle counter.
Embodiment
The utility model is described in more detail below in conjunction with specific embodiment, but be not limited to these embodiment.
Embodiment
Laser dust particle counter according to present embodiment comprises sampling apparatus, light source, measurement chamber, photodetector, Circuits System and DC frequency-changing electric supply installation, and wherein the DC frequency-changing electric supply installation comprises and is used to sampling apparatus that alternating current is provided, provides galvanic power-supply controller of electric for Circuits System; Being connected with the power-supply controller of electric circuitry phase also can be the lithium battery of power-supply controller of electric power supply; Output terminal is connected with the lithium battery circuitry phase, input end can be the charger of lithium cell charging by linking to each other with external AC power supply; Output terminal is connected with the power-supply controller of electric circuitry phase, input end can be by linking to each other with external AC power supply and alternating current being converted to direct current and then being power-supply controller of electric powered switch power supply.In the present embodiment, the input end of Switching Power Supply is in parallel with the input end of charger and is connected.
With reference to Fig. 1, the principle of work of the DC frequency-changing electric supply installation of present embodiment is as follows:
When not connecing external power supply, charger and Switching Power Supply are not worked, the switch that merges 5,6 pin places of power-supply controller of electric, then lithium battery can provide alternating current for the sampling pump of sampling apparatus by power-supply controller of electric, make laser dust particle counter produce the big sampling flow of 28.3L/min, lithium battery also can be the direct current that Circuits System provides 16V simultaneously, for other consuming components use of laser dust particle counter.
When the lithium battery quantity not sufficient, charger is linked to each other with external power supply, because charger and Switching Power Supply be connected in parallel, so Switching Power Supply also is connected with external power supply.At this moment, if the switch opens at 5,6 pin places of power-supply controller of electric, then charger is a lithium cell charging, and charging indicator light is bright, and Switching Power Supply is not worked; If the switch closure at 5,6 pin places of power-supply controller of electric, also be that power-supply controller of electric is in duty, this moment, Switching Power Supply was started working, and the external power supply of 220V was converted to the direct current of 24V, for the power-supply controller of electric power supply, make the work of power-supply controller of electric unaffected.Need to prove that though charger is being in the lithium cell charging process, also can be the power-supply controller of electric power supply, its electric weight is very little, is not enough to supply the big traffic sampling of sampling pump, so the setting of Switching Power Supply is very necessary.
More than the utility model has been done detailed description; its purpose is to allow the personage that is familiar with this art can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to spirit of the present utility model change or modify, and all should be encompassed in the protection domain of the present utility model
Claims (4)
1.
A kind of laser dust particle counter, comprise sampling apparatus, light source, measurement chamber, photodetector and Circuits System, it is characterized in that: described laser dust particle counter also comprises the DC frequency-changing electric supply installation, and described DC frequency-changing electric supply installation comprises the power-supply controller of electric that is used to sampling apparatus and Circuits System power supply; Be connected with described power-supply controller of electric circuitry phase and can be described power-supply controller of electric direct current power source supplying power; Output terminal is connected with described direct supply circuitry phase, input end can be the charger of described direct supply charging by linking to each other with external AC power supply; Output terminal is connected with described power-supply controller of electric circuitry phase, input end can be by linking to each other with external AC power supply and alternating current being converted to direct current and then being power-supply controller of electric powered switch power supply.
2.
Laser dust particle counter according to claim 1 is characterized in that: described direct supply is a lithium battery.
3.
Laser dust particle counter according to claim 1 is characterized in that: described power-supply controller of electric provides alternating current for sampling apparatus, for Circuits System provides direct current.
4.
Laser dust particle counter according to claim 1 is characterized in that: the input end of described Switching Power Supply is in parallel with the input end of described charger and is connected
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201076921U CN202033271U (en) | 2011-04-13 | 2011-04-13 | Laser dust particle counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201076921U CN202033271U (en) | 2011-04-13 | 2011-04-13 | Laser dust particle counter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033271U true CN202033271U (en) | 2011-11-09 |
Family
ID=44895565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201076921U Expired - Fee Related CN202033271U (en) | 2011-04-13 | 2011-04-13 | Laser dust particle counter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033271U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032317A1 (en) * | 2012-08-31 | 2014-03-06 | 深圳市华星光电技术有限公司 | Cleanness monitoring system and cartridge |
| CN109142199A (en) * | 2018-09-10 | 2019-01-04 | 苏州苏信环境科技有限公司 | A kind of threshold calibration method of laser dust particle counter channel voltage |
-
2011
- 2011-04-13 CN CN2011201076921U patent/CN202033271U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014032317A1 (en) * | 2012-08-31 | 2014-03-06 | 深圳市华星光电技术有限公司 | Cleanness monitoring system and cartridge |
| CN109142199A (en) * | 2018-09-10 | 2019-01-04 | 苏州苏信环境科技有限公司 | A kind of threshold calibration method of laser dust particle counter channel voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SUZHOU SUJING INSTRUMENT AUTOMATIC CONTROL EQUIPME Effective date: 20121220 Owner name: JIANGSU SUJING GROUP CO. LTD. Free format text: FORMER OWNER: SUZHOU SUJING INSTRUMENT AUTOMATIC CONTROL EQUIPMENT CO., LTD. Effective date: 20121220 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121220 Address after: 215122 Suzhou Industrial Park, Jiangsu, the only new road, No. 2 Patentee after: Jiangsu Sujing Group Co., Ltd. Patentee after: Suzhou Sujing Group Automation Instrument Equipment Corporation Address before: 215122 Suzhou Industrial Park, Suzhou Province, the only new road, No. 2, Jiangsu Patentee before: Suzhou Sujing Group Automation Instrument Equipment Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20190413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |