CN217819908U - Particle counter - Google Patents
Particle counter Download PDFInfo
- Publication number
- CN217819908U CN217819908U CN202220930855.4U CN202220930855U CN217819908U CN 217819908 U CN217819908 U CN 217819908U CN 202220930855 U CN202220930855 U CN 202220930855U CN 217819908 U CN217819908 U CN 217819908U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- particle
- processor circuit
- shell
- particle counter
- 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.)
- Active
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A particle counter comprises a shell, a particle counting sensor, a flow sensor, an air extractor and a processor circuit board, wherein the particle counting sensor, the flow sensor, the air extractor and the processor circuit board are arranged inside the shell; a flow sensor in communication with the particle counting sensor; the air exhaust device is communicated with the flow sensor; the processor circuit board is respectively electrically connected with the particle counting sensor, the flow sensor and the air exhaust device, and the external connection port of the processor circuit board is partially exposed outside the shell. Each part in this application is denser for the more miniaturization of this application's particle counter, it carries out further arranging to conveniently ask it when using.
Description
Technical Field
The utility model belongs to the particle counter field, specifically speaking relates to a particle counter.
Background
The particle counter is mainly used for testing the cleanness degree of gas with particles and is widely applied to the fields of pharmacy, food, semiconductors, electronics and the like, wherein the sensor converts the particles into corresponding scattered light signals according to particle sizes, outputs the scattered light signals, converts and amplifies the scattered light signals through the preamplification circuit to form voltage pulse signals for counting by the particle counter system, the voltage pulse signals enter the processor to realize particle counting in the processor, and the scattered light signals of the particles are very small and are obviously influenced by noise and interference, so that the processor obtains accurate voltage pulse signals under the influence of not only the performance of the sensor and the preamplification circuit but also the installation and configuration of all parts in the whole particle counter.
In view of the above, there is a need for a particle counter to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a particle counter, which is simplified to achieve miniaturization of the particle counter.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a particle counter comprising
A housing having therein a
The gas production port of the particle counting sensor is communicated with the outside of the shell;
a flow sensor in communication with the particle counting sensor;
the air extracting device is communicated with the flow sensor; and
and the processor circuit board is electrically connected with the particle counting sensor, the flow sensor and the air exhaust device respectively, and an external port of the processor circuit board is at least partially exposed to the outside of the shell.
Preferably, the particle counting sensor comprises
A body;
the light source circuit board is electrically connected to the side part of the body; and
the first circuit board is electrically connected to the top of the body.
Preferably, the light source circuit board cover is provided with a first shielding case, and the first circuit board cover is provided with a second shielding case at least in a partial region.
Preferably, the shell is provided with a first through hole corresponding to the gas collection port, one or more external through holes corresponding to one or more external ports of the processor circuit board are provided on the shell, the external ports of the processor circuit board are at least partially exposed to the outside of the shell through the external through holes, and the particle counting sensor, the flow sensor, the gas extraction device and the processor circuit board are fixedly connected with the shell.
Preferably, the shell comprises a bottom shell and a top shell matched with the bottom shell, the bottom shell comprises a bottom plate and a side plate, the bottom plate is fixedly connected with the particle counting sensor, the flow sensor and the air extracting device, and the side plate is fixedly connected with the processor circuit board.
Preferably, the air extractor further comprises a clamping member, the air extractor is clamped in the clamping member, and the clamping member is fixedly connected to the bottom plate.
Preferably, the top shell is provided with a first through hole corresponding to the gas production port; and the bottom shell is provided with an external through hole corresponding to the external port of the processor circuit board.
Preferably, the side plate is fixedly connected with a plurality of supporting columns corresponding to the processor circuit board, and the processor circuit board is fixedly connected with the side plate through the supporting columns.
Preferably, an elastic member or a heat conducting member or an elastic heat conducting member is disposed on a side of the body contacting the housing.
Preferably, a first air pipe and a second air pipe are respectively communicated with two sides of the flow sensor, the first air pipe is communicated with the particle counting sensor, the second air pipe is communicated with the air extractor, and an air outlet of the air extractor is arranged inside or outside the shell.
Compared with the prior art, the beneficial effects of the utility model reside in that: at first, each part in this application is intensive more for the particle counter's of this application miniaturization more, conveniently asks it to carry out further when using to arrange, secondly, each part arrange more rationally in this application, and simple structure, conveniently make production, have the price advantage, once more, make the processing of heat conduction or vibration isolation between internals and the shell in this application, in order to guarantee the steady operation of internals.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic side view of a particle counter according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an interior of a housing of a particle counter according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another side of a particle counter according to an embodiment of the present invention.
Reference numerals and component parts description referred to in the drawings:
1-a housing; 11-a bottom shell; 111-support column; 112-external through hole; 12-a top shell; 121 — a first via; 2-a particle counting sensor; 21-body; 211-gas recovery port; 22-a first circuit board; 221-a second shield; 23-a light source circuit board; 231-a first shield; 3-a flow sensor; 31-a first trachea; 32-a second trachea; 4-an air extracting device; 41-elastic card; 5-a processor circuit board; 51-external port.
Detailed Description
The technical solution of the present invention will be described clearly and completely through the following detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 3, a particle counter comprises a housing 1, and a particle counting sensor 2, a flow sensor 3, an air extractor 4, a processor circuit board 5, which are arranged in the housing 1; wherein the gas production mouth of particle count sensor 2 switches on extremely the outside of shell, and the sampling gas gets into the particle count sensor through the gas production mouth, and flow sensor 3 and particle count sensor 2 intercommunication, air exhaust device 4 and flow sensor 3 intercommunication take out the sampling gas that gets into in the particle count sensor 2, treater current board 5 respectively with particle count sensor 2, flow sensor 3 and air exhaust device 4 electric connection, the external port of treater circuit board 5 exposes for the outside of shell 1 partially at least.
The particle count sensor 2 monitors particles entering the inside thereof and forms a voltage pulse signal for identifying the particle diameter of the particles. The shell 1 is provided with a first through hole 121 corresponding to the gas collecting port 211, and the gas collecting port 211 is communicated to the outside of the shell 1 through the first through hole 121 and used for gas inlet; one or more external through holes 112 are formed in the shell 1 corresponding to one or more external ports of the processor circuit board 5, at least part of the external ports of the processor circuit board 5 are exposed to the outside of the shell through the external through holes 112, the particle counting sensor 2, the flow sensor 3, the air exhaust device 4 and the processor circuit board 5 are fixedly connected in the shell, and further, an air exhaust port of the air exhaust device 4 is arranged in the shell 1. The housing is also made of a material having thermal conductivity, such as stainless steel.
Further, the shell 1 comprises a bottom shell 11 and a top shell 12 matched with the bottom shell 11, the bottom shell 11 comprises a bottom plate and a side plate, the particle counting sensor 2, the flow sensor 3 and the air extracting device 4 are fixedly connected to the bottom plate, and the processor circuit board 5 is fixedly connected to the side plate. Each part in this application is more intensive for particle counter miniaturization more conveniently seeks it when using and carries out further arrangement.
Further, the particle counting sensor 2 includes a body 21, a light source circuit board 23, and a first circuit board 22, wherein the light source circuit board 23 is electrically connected to a side portion of the body 21, and the first circuit board 22 is electrically connected to a top portion of the body 21. Specifically, the body 21 is fixed to the bottom case 11, the light source circuit board 23 is electrically connected to an input end of a laser (laser diode) on a side portion of the body 21 for adjusting laser power, the first circuit board 22 is electrically connected to an output end of a photodetector on a top portion of the body 21, the photodetector may select a photodiode, a photomultiplier, or the like for converting light into a current, and is not specifically limited here, and is configured to convert, denoise, and amplify an output signal of the body 21 to obtain a voltage pulse signal for identifying particle diameters, and in addition, the first circuit board 22 or the processor circuit board 5 may be electrically connected to the light source circuit board 23 for controlling a working voltage in the light source circuit board 23.
Furthermore, the top case 12 is provided with a first through hole 121 corresponding to the gas production port 211 of the body 21, and the gas production port 211 of the body 21 is communicated with the outside of the top case 12 through the first through hole 121, so that air can be conveniently introduced.
Preferably, the light source circuit board 23 is covered with a first shielding cover 231, and at least a partial region of the first circuit board 22 is covered with a second shielding cover 221.
Further, the body 21 fits the bottom case 11 as closely as possible. Preferably, the side of the body 21 contacting the housing 1 is provided with an elastic or heat conducting element or an elastic heat conducting element, and particularly, the side of the bottom and side of the body 21 contacting the top case 12 and/or the bottom case 11 is provided with an elastic or heat conducting element or an elastic heat conducting element, such as a heat conducting silicone. As an implementation manner, an elastic element, a heat conduction element and an elastic heat conduction element are interposed between at least one of the side of the body 21 far away from the first circuit board 22, the side of the body far away from the light source circuit board 23 and the bottom of the body 21 and the housing to ensure the stable operation of the internal components.
Specifically, the two sides of the flow sensor 3 are respectively communicated with a first air pipe 31 and a second air pipe 32, the first air pipe 31 is communicated with the particle counting sensor 2, the second air pipe 32 is communicated with the air exhaust device 4, an air exhaust port of the air exhaust device 4 is arranged inside or outside the shell 1, the specific position of the air exhaust hole can be flexibly arranged according to actual needs, the air exhaust device 4 can directly exhaust air, the air exhaust device 4 can exhaust air in the particle counting sensor 2, the air exhaust device 4 can be specifically arranged into an air pump or a fan, and in addition, the air exhaust device 4 is not limited to the arrangement mode. Further, the air extractor 4 is clamped in the clamping piece 41, the clamping piece 41 is fixedly connected to the bottom shell 11, the air extractor 4 is fixedly connected to the bottom plate through the clamping piece, the clamping piece can be a u-shaped spring piece or a hoop, and specific limitation is not required.
Specifically, the processor circuit board 5 is respectively electrically connected with the particle counting sensor 2, the flow sensor 3 and the air extractor 4, the processor circuit board 5 can receive a voltage pulse signal of particles to perform particle counting and analysis processing, a gap is formed between a side surface of the processing circuit board, which deviates from the particle counting sensor 2, and a side plate of the bottom shell 11, the side of the processor circuit board 5, which deviates from the particle counting sensor, is electrically connected with one or more external ports 51, the external ports 51 are specifically power sockets, network cable sockets, USB sockets and the like, the external port 51 of the bottom shell 11, which corresponds to the external port 51 of the processor circuit board 5, is provided with an external through hole 112, the external port 51 of the processor circuit board 5 is at least partially exposed to the outside of the shell 1 through the external through hole 112, thereby facilitating an external power supply or a terminal and the like, and further supplying power to the particle counting sensor 2, the air extractor 4 and the flow sensor 3. Furthermore, a plurality of support columns 111 are fixedly connected to the side plate of the bottom case 11 corresponding to the processor circuit board 5, and the processor circuit board 5 is fixedly connected to the support columns 111 through screws to realize the fixed connection with the side plate.
In addition, the first circuit board 22 inputs the voltage pulse signal of the particles to the processor circuit board 5, and the count is performed after the comparison by the comparator of the processor circuit board 5. In addition, the first circuit board 22 or the processor circuit board 5 sends a signal to the light source circuit board 23 for adjusting the optical power, and a signal connection is formed between the flow sensor 3 and the first circuit board 22 or the processor circuit board 5.
In the application, the fixed connection can be fixed by means of bonding, welding, screwing, clamping and the like, and specific limitation is not required here.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A particle counter, comprising
A housing having therein a
A particle counting sensor, wherein a gas production port of the particle counting sensor is communicated with the outside of the shell;
a flow sensor in communication with the particle counting sensor;
an air extraction device in communication with the flow sensor; and
and the processor circuit board is electrically connected with the particle counting sensor, the flow sensor and the air exhaust device respectively, and an external port of the processor circuit board is at least partially exposed to the outside of the shell.
2. A particle counter as claimed in claim 1, wherein said particle count sensor comprises
A body;
the light source circuit board is electrically connected to the side part of the body; and
the first circuit board is electrically connected to the top of the body.
3. A particle counter as claimed in claim 2, wherein said light source circuit board cover is provided with a first shielding cage and said first circuit board cover is provided, at least in regions, with a second shielding cage.
4. The particle counter of claim 1, wherein the housing defines a first through hole corresponding to the gas extraction port, the housing defines one or more external through holes corresponding to one or more external ports of the processor circuit board, the external port of the processor circuit board is at least partially exposed to the exterior of the housing through the external through holes, and the particle counting sensor, the flow sensor, the gas extraction device, and the processor circuit board are secured to the housing.
5. The particle counter of claim 4, wherein said housing comprises a bottom shell and a top shell adapted to said bottom shell, said bottom shell comprising a bottom plate and a side plate, said bottom plate being fixedly connected to said particle counting sensor, said flow sensor and said air extractor, said side plate being fixedly connected to said processor circuit board.
6. The particle counter of claim 5, further comprising a fastener, wherein the air extractor is fastened to the fastener, and the fastener is secured to the bottom plate.
7. The particle counter of claim 5, wherein said top shell defines a first aperture therethrough corresponding to said gas extraction port; and the bottom shell is provided with an external through hole corresponding to an external port of the processor circuit board.
8. The particle counter of claim 5, wherein said side plate has a plurality of support posts affixed thereto corresponding to said processor circuit board, said processor circuit board being affixed to said side plate via said support posts.
9. A particle counter according to claim 2, wherein the body is provided with a resilient or thermally conductive member or resilient thermally conductive member on the side thereof which contacts the housing.
10. The particle counter of claim 1, wherein said flow sensor is connected to a first gas tube and a second gas tube on opposite sides thereof, said first gas tube being connected to said particle counting sensor, said second gas tube being connected to said gas evacuation device, an exhaust port of said gas evacuation device being disposed inside or outside said housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220930855.4U CN217819908U (en) | 2022-04-21 | 2022-04-21 | Particle counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220930855.4U CN217819908U (en) | 2022-04-21 | 2022-04-21 | Particle counter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217819908U true CN217819908U (en) | 2022-11-15 |
Family
ID=83981725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220930855.4U Active CN217819908U (en) | 2022-04-21 | 2022-04-21 | Particle counter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217819908U (en) |
-
2022
- 2022-04-21 CN CN202220930855.4U patent/CN217819908U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102236136B (en) | Opto-electronic device assembly | |
| CN217819908U (en) | Particle counter | |
| US10807440B2 (en) | Dual-passage air quality detection device | |
| CN113625134A (en) | Portable ultrahigh frequency and ultrasonic wave integrated monitoring device for transformer | |
| CN216214188U (en) | PV terminal assembly and electrical device | |
| CN210036963U (en) | Integrated single photon detector assembly | |
| CN112834489B (en) | Single photon counting device for chemiluminescence | |
| CN209841664U (en) | Gas detection device in oil based on laser photoacoustic spectrometry | |
| CN211654766U (en) | Miniaturized mass spectrometer | |
| CN212871464U (en) | Detachable unit detector | |
| CN211478831U (en) | Structured light module | |
| CN220874413U (en) | Power supply for mass spectrometer | |
| CN207691123U (en) | The earth-continuity structure of electric mortiser connector | |
| CN103968995B (en) | Based on the fluid pressure sensor of elasticity pressure measurement | |
| CN221037499U (en) | Humiture acquisition module | |
| CN111521696A (en) | Intrinsically safe gas chromatograph and use method | |
| CN215374237U (en) | Simply fixed infrared thermal imager | |
| CN212513339U (en) | Portable temperature measuring instrument | |
| CN112097899A (en) | Integrated single photon detector assembly | |
| CN220858581U (en) | Data acquisition association device | |
| CN205844191U (en) | A kind of UV vluorescent tester | |
| CN215986244U (en) | Detection alarm device for overvoltage of main circuit | |
| CN218584992U (en) | Laser measuring device | |
| CN211741077U (en) | Fluorescence detection circuit and fluorescence detection equipment | |
| CN213519795U (en) | Base of integrated molded case circuit breaker and circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |