CN215866285U - Particulate matter detection device - Google Patents
Particulate matter detection device Download PDFInfo
- Publication number
- CN215866285U CN215866285U CN202122169191.2U CN202122169191U CN215866285U CN 215866285 U CN215866285 U CN 215866285U CN 202122169191 U CN202122169191 U CN 202122169191U CN 215866285 U CN215866285 U CN 215866285U
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- Prior art keywords
- pipeline
- particulate matter
- gas
- light
- lens
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- 238000001514 detection method Methods 0.000 title claims abstract description 39
- 239000000779 smoke Substances 0.000 claims abstract description 34
- 239000002245 particle Substances 0.000 claims abstract description 26
- 230000003287 optical Effects 0.000 claims abstract description 25
- 230000000875 corresponding Effects 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 44
- 239000003517 fume Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 abstract description 5
- 238000010411 cooking Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The utility model discloses a particulate matter detection device, which comprises a particulate matter sensor, an optical path pipeline and a gas pipeline, wherein the optical path pipeline is arranged on the particulate matter sensor; one end of the light path pipeline is connected with the oil smoke pipeline, and the other end of the light path pipeline is provided with a lens; the particle sensor is arranged corresponding to the lens, so that the detection light of the particle sensor transmits through the lens; one end of the gas pipeline is connected with external air, and the other end of the gas pipeline is connected with the light path pipeline. The specific structure based on particulate matter sensor, light path pipeline and gas pipeline sets for, introduces outside clean air through the air pressure difference, prevents that contaminated air such as oil smoke pollutes key subassembly such as glass or lens on the particulate matter sensor detection light emission, the receiving path and avoids receiving the pollution, in addition, the particulate matter detection device of this embodiment simple structure, simple to operate and be convenient for maintain.
Description
Technical Field
The utility model belongs to the technical field of range hood detection equipment, and particularly relates to a particulate matter detection device.
Background
At present, the pollution prevention treatment of the oil smoke sensor for detecting the size of smoke of the range hood or the integrated stove is a difficult point.
Current oil smoke sensor probably does not set up grease proofing cigarette pollution structure or mechanism specially, leads to the oil smoke sensor to lead to smog detectivity to descend because of reasons such as pollution to influence normal use even the problem that loses efficacy.
Or there is pollution prevention measure, but most of them are installed on the main path of the air channel, which may have the problems of large size and high cost, and in addition, because of the arrangement in the middle of the air channel, there is a certain influence on the wind speed, or the sound noise is generated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides a particulate matter detection device.
The utility model solves the technical problems through the following technical scheme:
a particle detection device comprises a particle sensor, an optical path pipeline and a gas pipeline;
one end of the light path pipeline is connected with the oil smoke pipeline, and the other end of the light path pipeline is provided with a lens;
the particle sensor is arranged corresponding to the lens, so that the detection light of the particle sensor transmits through the lens;
one end of the gas pipeline is connected with external air, and the other end of the gas pipeline is connected with the light path pipeline.
Preferably, an included angle is formed between a center line of one end of the light path pipeline connected into the oil smoke pipeline and the flowing direction of the gas in the oil smoke pipeline, and the included angle is not more than 90 degrees.
Preferably, the particulate matter detection device further comprises a fan;
the fan is arranged at a port at one end of a gas pipeline connected with external air;
the fan is used for sucking external air into the gas pipeline.
Preferably, the number of the optical path pipes is two, and the particle sensor comprises an optical emitter and an optical receiver;
one ends of the two light path pipelines are communicated and connected into the oil smoke pipeline, and the other ends of the two light path pipelines are respectively provided with a lens;
the light emitter is used for emitting detection light through a lens;
the light receiver is used for receiving the reflected light of the detection light after passing through the gas to be detected in the oil smoke pipeline of the gas stove through another lens.
Preferably, the number of the gas pipelines is two, and the gas pipelines are symmetrically arranged on two sides of the light path pipeline;
one end of each of the two gas pipelines is respectively connected with external air;
the other end of each gas pipeline is correspondingly connected with one light path pipeline.
Preferably, the particle sensor further comprises a temperature compensation circuit and/or an optical signal processing circuit.
Preferably, the particulate matter detection device further comprises a housing;
the particulate matter sensor, the optical path pipe, and the gas pipe are accommodated in the housing.
Preferably, the particle detection device further comprises a fixed base;
the fixed base and the shell which is connected with one end of the light path pipeline of the oil smoke pipeline at the same side, and/or the fixed base and the shell which is connected with one end of the gas pipeline of the external air at the same side.
The positive progress effects of the utility model are as follows: based on the specific structure setting of particulate matter sensor, light path pipeline and gas pipeline, introduce outside clean air through the air pressure difference, prevent that polluted air such as oil smoke from polluting the detection light emission of particulate matter sensor, receive key subassembly (glass or lens) on the route and avoid receiving the pollution. In addition, the particulate matter detection device of this embodiment simple structure, simple to operate and be convenient for maintain.
Drawings
Fig. 1 is a schematic view of an internal structure of a particulate matter detecting device according to a preferred embodiment of the present invention.
Fig. 2 is a schematic view showing a structure of the particulate matter detecting device according to the preferred embodiment of the present invention.
Fig. 3 is a schematic view of the installation of the particulate matter detecting device on the range hood according to the preferred embodiment of the present invention.
Fig. 4 is an enlarged view of the mounting region of fig. 3.
Detailed Description
The present invention is further illustrated by the following preferred embodiments, but is not limited thereby in the scope of the preferred embodiments described.
A particulate matter detecting device 10, as shown in fig. 1 and 2, includes a particulate matter sensor 1, an optical path pipe 2, and a gas pipe 3;
one end 21 of the optical path pipeline 2 is connected to the oil smoke pipeline, and the other end of the optical path pipeline 2 is provided with a lens 4;
wherein, the central line of one end 21 of the light path pipeline 2 connected with the oil smoke pipeline forms an included angle with the flowing direction of the gas in the oil smoke pipeline, and the included angle is not more than 90 degrees. In the application of the range hood, the range hood is arranged on the side wall of a negative pressure area of the range hood, is perpendicular to the flow direction of oil smoke or is arranged at an angle of less than or equal to 90 degrees along the flow direction of the oil smoke, and has small influence on the wind resistance of an oil smoke path.
The particle sensor 1 is arranged corresponding to the lens 4, so that the detection light of the particle sensor 1 is transmitted through the lens 4;
one end 31 of the gas pipeline 3 is connected with the external air, and the other end of the gas pipeline is connected with the light path pipeline 2. This is relative to the cooking fumes air on the cooking fumes path. The air inlet of the particulate matter sensor is arranged outside the oil smoke channel of the range hood, and the air is in a normal kitchen air environment and is relatively clean.
In the above scheme, the anti-oil smoke pollution of the glass (lens) on the optical receiving and transmitting path of the particulate matter sensor is protected, external clean air is introduced through air pressure difference, and the detection light emission of the particulate matter sensor polluted by oil smoke and the like and the pollution of key components (glass or lens) on the receiving path are prevented.
In this embodiment, the particle detection device 10 further includes a housing 5 and a fixing base 6;
the particulate matter sensor 1, the optical path pipe 2, and the gas pipe 3 are accommodated in the housing 5.
The fixed base 6 is arranged on the shell 5 on the same side with one end 21 of the light path pipeline 2 connected into the oil smoke pipeline, or the fixed base 6 is arranged on the shell 5 on the same side with one end 31 of the gas pipeline 3 connected into the external air, or the fixed bases are arranged on both sides. Further based on unable adjustment base can be more portable install it in the lateral wall of lampblack absorber, integrated kitchen negative pressure zone, very little to the wind channel air current influence. Specific arrangement positions referring to fig. 3-4, schematic diagrams of the arrangement on the range hood 7 are given as examples.
Wherein the particle detection device 10 further comprises a fan (not shown in the figure);
the fan is arranged at the port of one end 31 of the gas pipeline 3 which is connected with the outside air;
the blower is used to suck outside air into the gas duct 3.
It should be noted that, in order to increase the intake of clean air, a fan may be provided.
In this embodiment, there are two optical conduits 2, and the particle sensor 1 includes an optical emitter 11 and an optical receiver 12;
one ends of the two light path pipelines 2 are communicated and connected into the oil smoke pipeline, and the other ends of the two light path pipelines 2 are respectively provided with a lens 4;
the light emitter 11 is used for emitting detection light through a lens 4;
the light receiver 12 is used for receiving the reflected light of the detection light after passing through the gas to be detected in the oil smoke pipeline of the gas stove through another lens 4.
Correspondingly, the number of the gas pipelines 3 is two, and the gas pipelines 3 are symmetrically arranged on two sides of the light path pipeline 2;
one end 31 of each of the two gas pipelines 3 is respectively connected with external air;
the other end of each gas pipeline 3 is correspondingly connected with one light path pipeline 2.
In this embodiment, the particle sensor 1 further includes a temperature compensation circuit 13 and an optical signal processing circuit 14.
The detection principle of the particulate matter sensor is as follows: the light emitter (such as infrared light) emits detection light through the lens, the detection light beam is scattered by the oil smoke particles, and the intensity of the heat radiation light is in direct proportion to the concentration of the smoke, namely, the more the oil smoke is, the stronger the heat radiation light is; correspondingly, the light received by the light receiver can change along with the intensity of the reflected light, and a certain corresponding relation is presented. The light receiver converts the received light into an electric signal, the larger the light is, the larger the received signal is, the signal is amplified by an operational amplifier, AD sampling and the like, and the signal is sent to an optical signal processing unit for processing, so that the size and the change condition of the oil smoke can be judged. In practical embodiments, when the application environment may have a large temperature change, a temperature compensation circuit is further provided to avoid the influence of the temperature change on the signal size.
In this embodiment, based on the specific structure setting of particulate matter sensor, light path pipeline and gas pipeline, introduce outside clean air through the air pressure difference, prevent that polluted air such as oil smoke from polluting the key subassembly (glass or lens) on particulate matter sensor detection light emission, the receiving path and avoiding receiving and polluting. In addition, the particulate matter detection device of this embodiment simple structure, simple to operate and be convenient for maintain.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (10)
1. A particle detection device is characterized by comprising a particle sensor, an optical path pipeline and a gas pipeline;
one end of the light path pipeline is connected with the oil smoke pipeline, and the other end of the light path pipeline is provided with a lens;
the particle sensor is arranged corresponding to the lens, so that the detection light of the particle sensor transmits through the lens;
one end of the gas pipeline is connected with external air, and the other end of the gas pipeline is connected with the light path pipeline.
2. The particle detection device of claim 1, wherein a center line of one end of the light path conduit connected to the fume conduit forms an angle with a flow direction of the gas in the fume conduit, and the angle is not greater than 90 °.
3. The particulate matter detecting device according to claim 1, further comprising a fan;
the fan is arranged at a port at one end of a gas pipeline connected with external air;
the fan is used for sucking external air into the gas pipeline.
4. The particulate matter detecting device according to claim 1, wherein the optical path pipe is two, and the particulate matter sensor includes an optical emitter and an optical receiver;
one ends of the two light path pipelines are communicated and connected into the oil smoke pipeline, and the other ends of the two light path pipelines are respectively provided with a lens;
the light emitter is used for emitting detection light through a lens;
the light receiver is used for receiving the reflected light of the detection light after passing through the gas to be detected in the oil smoke pipeline of the gas stove through another lens.
5. The particle detection device according to claim 4, wherein there are two gas conduits, and the gas conduits are symmetrically disposed on both sides of the optical conduit;
one end of each of the two gas pipelines is respectively connected with external air;
the other end of each gas pipeline is correspondingly connected with one light path pipeline.
6. The particulate matter detecting device according to claim 4, wherein the particulate matter sensor further comprises a temperature compensation circuit.
7. The particulate matter detecting device according to claim 4, wherein the particulate matter sensor further comprises an optical signal processing circuit.
8. The particulate matter detecting device according to claim 1, further comprising a housing;
the particulate matter sensor, the optical path pipe, and the gas pipe are accommodated in the housing.
9. The particle detection device of claim 8, wherein the particle detection device further comprises a stationary base;
the fixed base and the shell which is connected with one end of the light path pipeline of the oil smoke pipeline and is arranged at the same side.
10. The particle detection device of claim 8, wherein the particle detection device further comprises a stationary base;
the fixed base and the shell which is connected with one end of the gas pipeline of the external air at the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122169191.2U CN215866285U (en) | 2021-09-08 | 2021-09-08 | Particulate matter detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122169191.2U CN215866285U (en) | 2021-09-08 | 2021-09-08 | Particulate matter detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215866285U true CN215866285U (en) | 2022-02-18 |
Family
ID=80257445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122169191.2U Active CN215866285U (en) | 2021-09-08 | 2021-09-08 | Particulate matter detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215866285U (en) |
-
2021
- 2021-09-08 CN CN202122169191.2U patent/CN215866285U/en active Active
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