CN220084824U - Active gas alarm sensor - Google Patents
Active gas alarm sensor Download PDFInfo
- Publication number
- CN220084824U CN220084824U CN202321687295.5U CN202321687295U CN220084824U CN 220084824 U CN220084824 U CN 220084824U CN 202321687295 U CN202321687295 U CN 202321687295U CN 220084824 U CN220084824 U CN 220084824U
- Authority
- CN
- China
- Prior art keywords
- upper shell
- fan blade
- bottom plate
- exhaust pipe
- shell
- 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
- 238000007789 sealing Methods 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 24
- LVROLHVSYNLFBE-UHFFFAOYSA-N 2,3,6-trichlorobiphenyl Chemical compound ClC1=CC=C(Cl)C(C=2C=CC=CC=2)=C1Cl LVROLHVSYNLFBE-UHFFFAOYSA-N 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Emergency Alarm Devices (AREA)
Abstract
The utility model discloses an active gas alarm sensor, which belongs to a gas alarm sensor and is used for gas detection, and comprises a lower shell with a plurality of side air inlet holes and a conical part of a bottom air inlet hole, wherein the lower shell is connected with an outer exhaust pipe, the lower shell is connected with an upper shell bottom plate with an air hole at the bottom end of an upper shell and an inner exhaust pipe, the upper shell is also provided with a gas sensor for detecting target gas, the gas sensor is positioned on a PCB (printed circuit board) below a motor fixing plate on the inner wall of the upper shell, and a motor on the motor fixing plate is driven by a fan blade top plate, a fan blade bottom plate and an air inlet fan blade through a fan blade driving shaft. The utility model can improve the accuracy and timeliness of target gas detection by combining an intermittent active air inlet mode with a passive air inlet detection mode.
Description
Technical Field
The utility model belongs to a gas alarm sensor, and particularly relates to an active gas alarm sensor.
Background
The gas sensor generally collects target gas (combustible gas), and then the sensor transmits the generated weak current signal to an amplifying circuit, an analog-to-digital conversion circuit and the like of the main control board through a wire harness, and the sensor and the signal amplifying circuit can be directly integrated.
Referring to a fixed gas detection alarm sensor module group disclosed in patent document with Chinese patent publication No. CN210243610U, the fixed gas detection alarm sensor module group comprises a shell, wherein one end of the shell is a plug-in end, and the end opposite to the plug-in end is a gas detection end; the plug end is provided with a socket, and the gas detection end is provided with a gas inlet and a gas outlet; a gasket, a sensing head, a main control board, a power panel and a plug are sequentially arranged between the gas detection end and the plug-in end; the gasket is arranged between the inner end surface of the gas detection end and the detection end surface of the sensing head and is used for forming an air cavity between the gas detection end and the detection end surface of the sensing head so as to realize gas detection; the sensing head is in communication connection with the main control board, the main control board is connected with the power panel through a plurality of pin arrays, the plug is fixedly connected to the power panel, and the main control board is in communication connection with the power panel through the power panel; the sensor head detects the gas information and then transmits the gas information to the main control board for data processing, and the processed data is transmitted out through the plug.
However, the gas detection alarm sensor disclosed in the above-mentioned CN210243610U document still adopts a passive detection method, and gas detection is realized by an air cavity formed between a gas detection end and a sensor head. The gas detection sensor adopting passive detection also comprises a gas detection sensor with an audible and visual alarm function disclosed in Chinese patent publication No. CN 212722776U.
Disclosure of Invention
The utility model aims to provide an active gas alarm sensor which can improve the accuracy and timeliness of target gas detection by combining an intermittent active gas inlet mode with a passive gas inlet detection mode.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
the utility model discloses an active gas alarm sensor, which comprises a lower shell, wherein the lower shell is provided with a conical part, a plurality of side air inlet holes are formed in the circumferential side wall of the conical part, a plurality of bottom air inlet holes are formed in the bottom end of the conical part, a through hole for an outer exhaust pipe to pass through is formed in the position of the lower shell above the conical part, an upper shell is fixedly inserted into the top end opening of the lower shell, the upper shell is provided with an upper shell bottom plate in limiting connection with the lower shell, a plurality of air holes communicated with an inner cavity of the upper shell are distributed on the upper shell bottom plate, an inner exhaust pipe is fixedly connected to the upper shell bottom plate, the air inlet end of the inner exhaust pipe is positioned in the upper shell, an outer exhaust pipe is formed after the air outlet end of the inner exhaust pipe passes out of the lower shell, the upper shell is further provided with a gas sensor for detecting target gas, the gas sensor is positioned on a PCB plate, the PCB plate is fixed below a motor fixing plate, the motor fixing plate is fixedly connected with the inner wall of the upper shell, a fan blade driving shaft of the motor is fixedly connected with the upper shell bottom plate, the fan blades of the motor is fixedly arranged on the motor fixing plate, the fan blades extend into the inner space of the lower shell through the upper shell bottom plate, the fan blades are uniformly distributed on the upper shell bottom plate, and the fan blades are uniformly distributed on the fan blades are parallel to the driving shaft and the fan blade top plate and the upper fan blade plate is uniformly distributed on the upper plate.
As one of the preferable technical schemes of the utility model, the upper shell bottom plate is provided with a sealing ring in a through hole through which the fan blade driving shaft passes, and is rotationally connected with the fan blade driving shaft through a bottom plate shaft sleeve on the upper shell bottom plate.
As one of the preferable technical schemes of the utility model, the top end of the upper shell is fixedly connected with a connecting cover in a plugging manner, the connecting cover seals the top end opening of the upper shell, and a plurality of cover body fixing holes are distributed at the edge positions of the connecting cover.
As one of the preferable technical schemes of the utility model, the upper shell is integrally provided with a plurality of shell hangers at the edge position of the top end, and the through holes on the shell hangers are aligned with the cover body fixing holes on the connecting cover.
As one of the preferable technical schemes, the upper shell is provided with a plurality of heat dissipation holes distributed on the circumferential side wall near the top end outlet position.
As one of the preferable technical schemes of the utility model, the outlet of the outer exhaust pipe is connected with a unidirectional pipe.
As one of the preferable technical schemes of the utility model, the unidirectional pipe comprises a conical cylinder jointed with the inner wall of the outer exhaust pipe, and a sealing ring is arranged at the joint position of the conical cylinder and the outer exhaust pipe; the top end opening of the conical cylinder is hinged with a hinged cover plate with a closing opening.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model can improve the detection efficiency and the low timeliness of the gas alarm sensor caused by passive gas inlet through the intermittent active gas inlet and passive gas inlet detection modes, and can also avoid the problem of energy waste caused by active gas inlet all the time.
Drawings
Fig. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is a schematic diagram of a second embodiment of the present utility model.
Fig. 3 is a top view of the present utility model.
Fig. 4 is a cross-sectional view in the position and orientation indicated by A-A in fig. 3.
Fig. 5 is a partial enlarged view of the portion I in fig. 2.
In the figure: 1. a connection cover; 2. a cover fixing hole; 3. a battery placement case; 4. a heat radiation hole; 5. an upper housing; 6. a lower housing; 7. an outer exhaust pipe; 8. a unidirectional tube; 9. a side air inlet hole; 10. a tapered portion; 11. a shell hanging lug; 12. a bottom air inlet hole; 13. a conical cylinder; 14. a cover plate is hinged; 15. air inlet fan blades; 16. a fan blade base plate; 17. a fan blade top plate; 18. a fan blade drive shaft; 19. an inner exhaust pipe; 20. an upper housing floor; 21. a seal ring; 22. a bottom plate shaft sleeve; 23. a gas sensor; 24. a PCB board; 25. a connecting column; 26. a motor fixing plate; 27. and a motor.
Detailed Description
The technical scheme of the utility model is further described and illustrated below with reference to the accompanying drawings and the embodiments. It should be noted that, the terms possibly related to the following paragraphs include, but are not limited to, "up, down, left, right, front, back" and the like, and the directions according to which the terms are all visual directions shown in the drawings of the corresponding specification, which should not be construed as limiting the scope of protection of the present technical solution, but are only for facilitating the understanding of the technical solution described in the specification by those skilled in the art.
In the description of the following paragraphs, unless expressly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in view of the specific circumstances in combination with common general knowledge in the art, design specifications, standard documents, etc.
Example 1
As shown in fig. 1 to 4, an active gas alarm sensor comprises a lower housing 6, wherein a conical portion 10 is arranged at the lower part of the lower housing 6, a plurality of side air inlet holes 9 are distributed on the circumferential side wall of the conical portion 10, a plurality of bottom air inlet holes 12 are distributed at the bottom end of the conical portion 10, and the side air inlet holes 9 and the bottom air inlet holes 12 are communicated with the inner space of the conical portion 10 and the inner space of the lower housing 6.
The side wall of the lower shell 6 above the conical part 10 is provided with a plurality of through holes for the outer exhaust pipe 7 to pass through.
The top end of the lower shell 6 is opened and is inserted and fixed with the bottom end of the upper shell 5 into a whole. The bottom end of the upper shell 5 is fixedly connected with an upper shell bottom plate 20, and the upper shell bottom plate 20 forms a limiting structure which is spliced with the lower shell 6 at the bottom end of the upper shell 5.
The central axis position of the upper shell bottom plate 20 is provided with a through hole for the fan blade driving shaft 18 to pass through, a sealing ring 21 for improving the connection tightness of the fan blade driving shaft 18 is arranged in the through hole, a bottom plate shaft sleeve 22 is respectively arranged at the through hole above the sealing ring 21 and the through hole below the sealing ring, and the bottom plate shaft sleeve 22 is fixed with the upper shell bottom plate 20 but is rotationally connected with the fan blade driving shaft 18.
The bottom plate 20 of the upper shell is also provided with ventilation holes which are distributed on the periphery of the fan blade driving shaft 18. The upper shell bottom plate 20 is also provided with a plurality of through holes for the inner exhaust pipes 19 to pass through, the inner exhaust pipes 19 pass through the through holes and are fixedly connected with the upper shell bottom plate 20, the air inlet ends of the inner exhaust pipes 19 are positioned above the upper shell bottom plate 20, and the air outlet ends of the inner exhaust pipes 19 pass through the upper shell 5 after being bent and form the outer exhaust pipes 7.
The upper casing bottom plate 20 is provided with a PCB 24 with a gas sensor 23 above, the PCB 24 is fixedly connected with a motor fixing plate 26 through a connecting column 25, the motor fixing plate 26 is of a frame structure, a motor 27 is fixed on the motor fixing plate, and the motor 27 is an explosion-proof motor. The periphery of the motor fixing plate 26 is fixedly connected with the inner wall of the upper housing 5.
The output shaft of the motor 27 is connected with a fan blade driving shaft 18, and the fan blade driving shaft 18 penetrates through the PCB 24 and the upper shell bottom plate 20 and then stretches into the lower shell 6.
A fan blade top plate 17 and a fan blade bottom plate 16 which are parallel to each other are connected at a fan blade driving shaft 18 in the lower shell 6, a plurality of air inlet fan blades 15 are connected between the fan blade top plate 17 and the fan blade bottom plate 16, and the air inlet fan blades 15 are distributed around the central axis of the fan blade driving shaft 18.
The outlet of the outer exhaust pipe 7 is provided with a one-way pipe 8.
Example 2
As shown in fig. 1 to 4, an active gas alarm sensor comprises a connection cover 1 positioned at the top opening of an upper shell 5, wherein the connection cover 1 is fixedly spliced with the upper shell 5 into a whole, a plurality of cover fixing holes 2 are processed at the edge of the connection cover 1, the cover fixing holes 2 are correspondingly arranged with shell lugs 11 at the edge of the top opening of the upper shell 5, and through holes on the shell lugs 11 are correspondingly arranged with the cover fixing holes 2.
The connection cover 1 is provided with a battery placement box 3 extending toward the inside of the housing 5 at the center axis position, and a battery pack is placed in the battery placement box 3 and electrically connected with the motor 27 through a control switch.
The upper shell 5 is provided with a plurality of radiating holes 4 distributed on the circumferential side wall close to the top opening, and the radiating holes 4 are positioned above the motor 27 and are communicated with the inner space of the upper shell 5.
The structure and connection relationship of the rest are the same as those described in any one of the foregoing embodiments, and are not repeated here to avoid complicated text.
Example 3
As shown in fig. 5, the active gas alarm sensor, wherein the unidirectional pipe 8 comprises a conical cylinder 13, and the conical cylinder 13 comprises a cylindrical section which is attached to the inner wall of the outer exhaust pipe 7 and a conical cylinder section which is integrated with the cylindrical section. The top of the cone section is provided with an opening, the opening is hinged with a hinged cover plate 14, and the hinged cover plate 14 covers the opening at the top of the cone 13. The structure and connection relationship of the rest are the same as those described in any one of the foregoing embodiments, and are not repeated here to avoid complicated text.
On the basis of the above embodiments, the technical features involved therein and the functions and roles that the technical features play in the technical solution are described in detail using the following paragraphs so as to help those skilled in the art to fully understand the technical solution and reproduce it.
When the utility model is used, the motor 27 starts to work under the condition of external power supply or storage battery power supply in the battery placing box 3 through the built-in control switch (or the singlechip or the controller or the microchip).
After the motor 27 works, the fan blade driving shaft 18 can be driven to rotate through the output shaft, and the fan blade driving shaft 18 drives the fan blade top plate 17, the air inlet fan blade 15 and the fan blade bottom plate 16 which are positioned in the lower shell 6 and the conical part 10 to rotate, so that the fan blade top plate 17, the air inlet fan blade 15 and the fan blade bottom plate 16 form power for air inlet 9 of the side air inlet hole 12 to the inside of the lower shell 6.
The air entering the lower shell 6 through the side air inlet hole 9 and the bottom air inlet hole 12 moves upwards and is sent to the gas sensor 23 through the air holes of the upper shell bottom plate 20, the gas sensor 23 detects target gas and forms an alarm signal through the PCB 24, and the alarm signal formed by the PCB 24 can be directly sent outwards through acoustic or optical signals or can be sent to a corresponding upper computer through a wired or wireless mode.
The detected gas enters the outer exhaust pipe 7 through the inner exhaust pipe 19 and is discharged through the unidirectional pipe 8 at the outlet of the outer exhaust pipe 7. When the unidirectional pipe 8 is discharged, the hinged cover plate 14 at the opening of the top of the conical cylinder 13 is jacked, and when the airflow is small, the hinged cover plate 14 is closed with the opening of the top of the conical cylinder 13.
In order to ensure heat dissipation of the motor 27 and the PCB 24, the motor fixing plate 26 is of a frame structure, a plurality of heat dissipation holes 4 are formed in the circumferential side wall of the upper shell 5, and a filter screen is arranged at the heat dissipation holes 4.
In order to ensure the air intake quality, a detachable filter screen is also required to be arranged at the inner walls of the lower shell 6 and the conical part 10.
The utility model is fixed with the fixing screw through the cover body fixing hole 2 on the connecting cover 1.
Finally, although the description has been described in terms of embodiments, not every embodiment is intended to include only a single embodiment, and such description is for clarity only, as one skilled in the art will recognize that the embodiments of the disclosure may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. The utility model provides an active gas alarm sensor, includes casing (6) down, and casing (6) have toper portion (10) down, and circumference lateral wall processing of toper portion (10) has a plurality of side inlet port (9), has a plurality of inlet port (12) in the bottom processing of toper portion (10), its characterized in that: the lower shell (6) is also provided with a through hole for the outer exhaust pipe (7) to pass through at the position above the conical part (10), the upper shell (5) is fixedly inserted at the top end opening of the lower shell (6), the upper shell (5) is provided with an upper shell bottom plate (20) which is in limit connection with the lower shell (6), a plurality of ventilation holes communicated with the inner cavity of the upper shell (5) are distributed on the upper shell bottom plate (20), the upper shell bottom plate (20) is also fixedly connected with an inner exhaust pipe (19), the air inlet end of the inner exhaust pipe (19) is positioned in the upper shell (5), the air outlet end of the inner exhaust pipe (19) passes out of the lower shell (6) to form the outer exhaust pipe (7), the upper shell (5) is also provided with a gas sensor (23) for detecting target gas, the gas sensor (23) is positioned on the PCB (24), the PCB (24) is fixed below the motor fixing plate (26), the motor fixing plate (26) is fixedly connected with the inner wall of the upper shell (5), the motor (27) is arranged on the motor fixing plate (26), a fan blade driving shaft (18) of the motor (27) penetrates through the PCB (24) and the upper shell bottom plate (20) and then stretches into the inner space of the lower shell (6), and the fan blade driving shaft (18) is provided with a fan blade top plate (17), a fan blade driving shaft (18) and a fan blade driving shaft, A plurality of air inlet fan blades (15) are distributed between the fan blade bottom plate (16) and the fan blade top plate (17), and the air inlet fan blades (15) are uniformly distributed around the central axis of the fan blade driving shaft (18).
2. An active gas alarm sensor according to claim 1, wherein: the upper shell bottom plate (20) is provided with a sealing ring (21) in a through hole through which the fan blade driving shaft (18) passes, and is rotationally connected with the fan blade driving shaft (18) through a bottom plate shaft sleeve (22) on the upper shell bottom plate (20).
3. An active gas alarm sensor according to claim 1, wherein: the top of the upper shell (5) is fixedly connected with a connecting cover (1) in an inserting mode, the connecting cover (1) seals the top opening of the upper shell (5), and a plurality of cover body fixing holes (2) are distributed at the edge positions of the connecting cover (1).
4. An active gas alarm sensor according to claim 3 wherein: the upper shell (5) is integrally provided with a plurality of shell hangers (11) at the edge position of the top end, and through holes on the shell hangers (11) are aligned with cover body fixing holes (2) on the connecting cover (1).
5. An active gas alarm sensor according to claim 3 wherein: the upper shell (5) is provided with a plurality of heat dissipation holes (4) distributed on the circumferential side wall near the top outlet position.
6. An active gas alarm sensor according to any one of claims 1 to 5, wherein: the outlet of the outer exhaust pipe (7) is connected with a one-way pipe (8).
7. An active gas alarm sensor according to claim 6 wherein: the unidirectional pipe (8) comprises a conical cylinder (13) attached to the inner wall of the outer exhaust pipe (7), and a sealing ring is arranged at the attaching position of the conical cylinder (13) and the outer exhaust pipe (7); the top end opening of the conical cylinder (13) is hinged with a hinged cover plate (14) for covering the opening at the top end opening of the conical cylinder (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321687295.5U CN220084824U (en) | 2023-06-30 | 2023-06-30 | Active gas alarm sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321687295.5U CN220084824U (en) | 2023-06-30 | 2023-06-30 | Active gas alarm sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220084824U true CN220084824U (en) | 2023-11-24 |
Family
ID=88813880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321687295.5U Active CN220084824U (en) | 2023-06-30 | 2023-06-30 | Active gas alarm sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220084824U (en) |
-
2023
- 2023-06-30 CN CN202321687295.5U patent/CN220084824U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8727560B2 (en) | Wind-powered light-emitting diode lamp | |
| CN220084824U (en) | Active gas alarm sensor | |
| CN105511210A (en) | Projector | |
| CN212412800U (en) | Wireless charging device | |
| CN217385118U (en) | Lithium battery box safety detection device | |
| CN205842902U (en) | A kind of airhandling equipment of indoor and outdoor air exchange | |
| CN212460755U (en) | Campus fire detection and alarm device based on wireless network | |
| WO2019006960A1 (en) | Micro aeration pump shell structure and micro aeration pump | |
| CN208435389U (en) | Cooking machine | |
| CN210664759U (en) | Noise detection device with external microphone | |
| CN206469370U (en) | A kind of air purifier of motor for double-ended drive | |
| CN209419497U (en) | Inverter | |
| CN109770741A (en) | Cooking machine | |
| CN220690892U (en) | Portable TVOC monitoring device | |
| CN217562114U (en) | Wireless gas alarm | |
| CN218293195U (en) | Intelligent alarm intelligent door lock | |
| CN212845262U (en) | Energy-saving portable gas detector | |
| CN211042868U (en) | Soil air static sampling box and soil air static sampling system | |
| CN219496801U (en) | Isolator integrated structure and isolator | |
| CN215457600U (en) | Handheld car and household dual-purpose dust collector structure convenient to disassemble and assemble | |
| CN212850342U (en) | Servo driver with motor temperature detection function | |
| CN220652525U (en) | Gas-liquid photoelectric combined slip ring convenient to install | |
| CN211577046U (en) | Electrolytic cell type oxygen sensor | |
| CN210951496U (en) | Ceramic warmer | |
| CN216900429U (en) | Signal processing module suitable for multiple gas sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Room 102, Building 27, Phase III, Zhongnan High tech, No. 8 Zidong Avenue, Tianqiao District, Jinan City, Shandong Province, China, 250119 Patentee after: SHANDONG COAL ELECTRIC Co.,Ltd. Country or region after: China Address before: No.20, Xinsha North Road, Huaiyin District, Jinan City, Shandong Province Patentee before: SHANDONG COAL ELECTRIC Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |