CN114140976A - Smoke detector capable of preventing water mist interference - Google Patents
Smoke detector capable of preventing water mist interference Download PDFInfo
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- CN114140976A CN114140976A CN202210115618.7A CN202210115618A CN114140976A CN 114140976 A CN114140976 A CN 114140976A CN 202210115618 A CN202210115618 A CN 202210115618A CN 114140976 A CN114140976 A CN 114140976A
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- wiper
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
- G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
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- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to the technical field of smoke alarms, and provides a smoke detector capable of preventing water fog interference, which comprises a base, a ventilating grid, a light emitter, a blocking plate and a light receiver, wherein the light emitter, the blocking plate and the light receiver are arranged on one side of the base, the blocking plate is arranged on one side of a light path of the light emitter, one side of the blocking plate is a blocking area, the light receiver is positioned in the blocking area, the ventilating grid is arranged on the other side of the base, the smoke detector further comprises a dehumidifying mechanism arranged on the base and a sealing element arranged on the ventilating grid, the dehumidifying mechanism comprises a sealing bin, a guiding element and a dehumidifying element, the dehumidifying element is arranged on the guiding element, the dehumidifying element is positioned in the sealing bin, the guiding element is movably arranged on the base, and the guiding element can drive the dehumidifying element to enter or leave the sealing bin. Through above-mentioned technical scheme, the smoke detector has solved among the prior art because there is the alert problem of wrong report in water smoke interference.
Description
Technical Field
The invention relates to the technical field of smoke alarms, in particular to a smoke detector capable of preventing water mist interference.
Background
The photoelectric smoke fire detector uses smoke as a main detection object and is suitable for places with smoldering stages in the initial stage of fire. The light receiver is used for receiving the light rays emitted by the light emitter; when smoke enters the optical darkroom, smoke particles generate a scattering effect on light, so that part of light emitted by the light emitter is scattered to the light receiver, the receiving tube receives an optical signal and transmits the optical signal to the control module, and then alarm is triggered.
In the prior art, a photoelectric smoke detector is not radiant compared with an ionic detector, but has the defect of false alarm, the photoelectric smoke detector is influenced by the surrounding environment in the application process, for example, when water vapor exists in the air, a light receiver can also receive a signal transmitted by a light transmitter, so that false alarm is caused, in addition, condensed water drops can also appear on the surface of the light transmitter, and light is scattered, so that false alarm is caused, the prior art adopts methods such as light splitting, drying and filling materials adding and the like aiming at the problems, but the light splitting needs to identify different particle colors, but the requirement on identification is higher, the processing precision is better, the equipment is relatively more complex, the drying and filling materials only can keep the precision of short effect, and need to be frequently replaced, and certain disadvantages exist, based on the problems, there is a need for a smoke detector with a simple structure and reduced false alarms.
Disclosure of Invention
The invention provides a smoke detector capable of preventing water mist interference, which solves the problem that false alarm exists in the smoke detector due to water mist interference in the prior art.
The technical scheme of the invention is as follows:
the utility model provides a smoke detector of waterproof fog interference, includes base, ventilative grid, and sets up light emitter, baffler, light receiver on base one side, the baffler sets up light emitter's light path one side, one side of baffler is for sheltering from the region, light receiver is located shelter from the region, ventilative grid sets up on the base opposite side, still including setting up dehumidification mechanism and setting on the base are in sealing member on the ventilative grid, dehumidification mechanism includes sealed bin, guide and dehumidification piece, the dehumidification piece sets up on the guide piece, the dehumidification piece is located in the sealed bin, the guide piece removes the setting and is in on the base, the guide piece can drive dehumidification piece gets into or leaves sealed bin.
The base has the annular groove, the guide piece includes transmission portion and bearing portion, transmission portion is the annular rack, transmission portion sets up in the annular groove, the dehumidification piece sets up on the bearing portion, still includes drive gear, drive gear rotates to be set up in the sealed bin, be located in the annular groove, drive gear with transmission portion meshes.
The bearing part is provided with a plug-in groove, the dehumidifying part comprises a plug connector, an adsorbing part and a wiping part, the plug connector is inserted into the plug-in groove, the wiping part is arranged on one side, close to the light emitter, of the plug connector, and the adsorbing part is arranged on one side, far away from the light emitter, of the plug connector.
The wiping piece comprises a first cotton wiper, a second cotton wiper and a third cotton wiper, the third cotton wiper is arranged on one side, close to the light emitter, of the plug connector, the first cotton wiper and the second cotton wiper are arranged at two ends of the third cotton wiper, a wiping space is formed among the first cotton wiper, the second cotton wiper and the third cotton wiper, and the wiping space is used for allowing the light emitter to pass through.
The sealed storehouse sets up on the base, the sealed storehouse includes roof, fixed plate, open-close board and elasticity hinge that resets, the fixed plate is two at least, the open-close board is four at least, the open-close board with the fixed plate with the help of the elasticity hinge connection that resets, two the fixed plate sets up relatively, two the open-close board is a set of, four the open-close board divides two sets of symmetries to set up two between the fixed plate, the roof the fixed plate reaches the open-close board forms sealed space.
The sealing piece is rotatably arranged on the air-permeable grille and is provided with a sealing blade, and the sealing blade controls the air inlets to be closed and opened.
The sealing piece is connected with the sealing piece, the signal output end of the light receiver is connected with the control module, and the control end of the control module is connected with the first driving device and the second driving device.
The control module is characterized by further comprising an alarm, and the control end of the control module is communicated with the alarm.
The working principle and the beneficial effects of the invention are as follows:
the invention discloses a smoke detector for preventing water fog interference, which adopts the working principle and the invention conception that false alarm is reduced by adding a dehumidifying mechanism and a sealing element on an air-permeable grating on the basis of the prior photoelectric smoke detector, wherein the internal principle is that when a light beam emitted by a light emitter on the prior basic mechanism is received by a light receiver, the dehumidifying mechanism and the sealing element on the air-permeable grating are started without alarming at the first time, the sealing element can close the air-permeable grating firstly, then the dehumidifying mechanism is started, the dehumidifying mechanism moves and operates in a sealed space to absorb water fog and condensation in the sealed space, then the light emitter emits light which is received by the light receiver again, the smoke detector can alarm, if the light emitter does not receive the light by the light receiver at the moment, the water mist is interfered, the smoke detector cannot give an alarm, and the interior of the detector can be checked so as to avoid the situation of false alarm;
by adopting the structure and the inventive concept, compared with the prior art, the complexity of the smoke sensor can be reduced, false alarms can be reduced without depending on more accurate particle identification, the particle identification depends on other complex factors, and the judgment stability is far inferior to that of the judgment logic invented in the application; in addition, the dehumidification mechanism in the invention operates when false alarm occurs, compared with the traditional brain-free adsorbent filling method, the dehumidification mechanism can greatly prolong the service life, avoid frequent replacement and indirectly improve the accuracy of false alarm judgment.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the alarm end of the base of the present invention;
FIG. 3 is a first schematic view of a base detection end structure according to the present invention;
FIG. 4 is a schematic diagram of a second exemplary embodiment of a base detection end structure of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
FIG. 6 is a schematic top view of the inspection end of the base of the present invention;
FIG. 7 is a schematic cross-sectional view taken along line B-B of FIG. 6;
FIG. 8 is a schematic view of the connection structure of the connector and the carrier of the present invention;
FIG. 9 is a schematic view of the construction of the air permeable grille of the present invention;
in the figure: 1. the device comprises a base, 2, a ventilation grating, 3, a light emitter, 4, a barrier plate, 5, a light receiver, 6, a sealing bin, 7, a guide piece, 8, a dehumidifying piece, 9, an annular groove, 10, a transmission part, 11, a bearing part, 12, a driving gear, 13, an insertion groove, 14, an insertion piece, 15, an adsorption piece, 16, a wiping piece, 17, a first cotton wiper, 18, a second cotton wiper, 19, a third cotton wiper, 20, a top plate, 21, a fixing plate, 22, an opening plate, 23, an elastic reset hinge, 24, an air inlet hole, 25, a sealing blade, 26, a control module, 27, a first driving device, 28, a second driving device, 29 and an alarm.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
As shown in fig. 1 to 9, the present embodiment provides a smoke detector preventing water fog interference, which includes a base 1, an air permeable grille 2, a light emitter 3, a blocking plate 4, and a light receiver 5, which are disposed on one side of the base 1, wherein the blocking plate 4 is disposed on one side of a light path of the light emitter 3, one side of the blocking plate 4 is a blocking area, the light receiver 5 is located in the blocking area, the air permeable grille 2 is disposed on the other side of the base 1, the smoke detector further includes a dehumidifying mechanism disposed on the base 1 and a sealing member disposed on the air permeable grille 2, the dehumidifying mechanism includes a sealed bin 6, a guiding member 7, and a dehumidifying member 8, the dehumidifying member 8 is disposed on the guiding member 7, the dehumidifying member 8 is located in the sealed bin 6, the guiding member 7 is movably disposed on the base 1, the guide 7 can bring the moisture separator 8 into or out of the capsule 6.
In this embodiment, a base 1, an air permeable grille 2, a light emitter 3, a blocking plate 4 and a light receiver 5 of a smoke sensor basic component in the prior art are all present, and the arrangement of the base is also the same as that of a smoke sensor in the prior art, the air permeable grille 2 is used for entering air, the air permeable grille 2, the light emitter 3 and other components are two opposite sides on the base 1, the light emitter and the light receiver 5 also achieve avoidance and isolation of light under the action of the blocking plate 4, in order to reduce false alarms, a dehumidifying mechanism is installed on the base 1 in the embodiment, a sealing member is installed on the air permeable grille 2, the dehumidifying mechanism is used in cooperation with the sealing member, wherein the dehumidifying mechanism adopts a sealed cabin 6, a guide 7 and a dehumidifying member 8, in the working process, the light receiver 5 is triggered for the first time, the guide 7 can drive the dehumidifying member 8 to move out of the sealed cabin 6, wherein the moisture removal spare 8 can absorb and handle the water smoke or the condensation in the sealed space, because the sealing member live with ventilative grid 2's bleeder vent is sealed, so can not introduce new interference item, water has been absorbed, if the water smoke disturbs, then through the processing of dehumidification mechanism and sealing member, then can not report to the police again, if still smog, then still can trigger light receiver 5, thereby it disturbs to get rid of the water smoke, play the effect of accurate warning, the sealed storehouse 6 of dehumidification mechanism still holds moisture removal spare 8, moisture removal spare 8 only can follow the sealed storehouse 6 removal in the use and come out, consequently can also play better saving to moisture removal spare 8, the life of extension moisture removal spare 8.
The base 1 has annular groove 9, guide 7 includes transmission portion 10 and bearing portion 11, transmission portion 10 is the annular rack, transmission portion 10 sets up in the annular groove 9, dehumidification piece 8 sets up on the bearing portion 11, still includes drive gear 12, drive gear 12 rotates and sets up in the sealed storehouse 6, be located in the annular groove 9, drive gear 12 with transmission portion 10 meshes.
In the embodiment, the guide 7 can guide the base 1, and actually, the dehumidifying element 8 installed on the guide 7 is driven by the guide 7 to move in the space between the base 1 and the air-permeable grille 2, so as to absorb the water mist, in the embodiment, the structure is adopted, but not limited to, the transmission part 10 of the guide 7 is a circular rack, in order to ensure that there is no interference of the internal components, the base 1 is provided with a circular groove 9, the guide 7 is arranged in the circular groove 9, the guide 7 is divided into the transmission part 10 and a bearing part 11, wherein the bearing part 11 is higher than the transmission part 10, the bearing part 11 is used for installing the dehumidifying element 8, the bearing part 11 is higher than the plane of the base 1, and can expose the dehumidifying element 8 in the detected space, so as to absorb the water mist, and the transmission part 10 in the circular groove 9, the transmission part 10 has teeth, and can be engaged with the driving gear 12, and the driving gear 12 rotates to drive the whole guide part 7 to rotate through the transmission part 10, so as to realize the control of the dehumidifying mechanism.
The bearing part 11 is provided with a plug-in groove 13, the dehumidifying part 8 comprises a plug-in part 14, an adsorbing part 15 and a wiping part 16, the plug-in part 14 is inserted into the plug-in groove 13, the wiping part 16 is arranged on one side, close to the light emitter 3, of the plug-in part 14, and the adsorbing part 15 is arranged on one side, far away from the light emitter 3, of the plug-in part 14.
In this embodiment, in order to install more conveniently, can adopt convenient mounting structure between dehumidification piece 8 and the supporting part 11, furthermore, in this embodiment, in order to can be better solve the problem that water smoke and condensation caused the wrong report of police, dehumidification piece 8 carries out corresponding improvement, mainly be the interference item to air and light emitter 3, dehumidification piece 8 has divided into plug connector 14, wiper 16 has been installed to one side that is close to light emitter 3 on plug connector 14's the side, the condensation on the light emitter can be wiped away to wiper 16, plug connector 14 other one side then is adsorption member 15, adsorption member 15 can absorb the water smoke in the air, both cooperate and just can solve the interference of water smoke and condensation comprehensively, plug connector 14 has the slot, the slot inserts in inserting groove 13, be convenient for install and fixed, the convenient operability of device has been promoted.
The wiping piece 16 comprises a first cotton wiper 17, a second cotton wiper 18 and a third cotton wiper 19, the third cotton wiper 19 is arranged on one side, close to the light emitter 3, of the plug connector 14, the first cotton wiper 17 and the second cotton wiper 18 are arranged at two ends of the third cotton wiper 19, wiping spaces are formed among the first cotton wiper 17, the second cotton wiper 18 and the third cotton wiper 19, and the wiping spaces are used for allowing the light emitter 3 to pass through.
In the present embodiment, based on the above embodiment, the wiping member 16 may adopt the form of the present embodiment, but is not limited to the following structure, and a complete wiping space can be formed to ensure the drying of the light emitter 3, in the present embodiment, the wiping member is divided into the first cotton wiper 17, the second cotton wiper 18 and the third cotton wiper 19, wherein the third cotton wiper 19 is attached to the side surface of the plug 14, the first cotton wiper 17 and the second cotton wiper 18 are disposed at two ends of the third cotton wiper 19, the first cotton wiper 17 and the second cotton wiper 18 wipe the side surface of the light emitter 3, and the third cotton wiper 19 mainly wipes the end surface of the light emitter 3, so as to solve the interference item of the condensation on the light emitter 3.
Sealed storehouse 6 sets up on the base 1, sealed storehouse 6 includes roof 20, fixed plate 21, open close plate 22 and elasticity hinge 23 that resets, fixed plate 21 is two at least, open close plate 22 is four at least, open close plate 22 with fixed plate 21 with the help of elasticity hinge 23 connection that resets, two fixed plate 21 sets up relatively, two open close plate 22 is a set of, four open close plate 22 divides two sets of symmetries to set up two between the fixed plate 21, roof 20 fixed plate 21 reaches open close plate 22 forms sealed space.
In this embodiment, the dehumidifying element 8 is taken out from the sealed bin 6 through the guiding element 7 when the dehumidifying mechanism achieves the dehumidifying effect, so that the important point of the dehumidifying element 8 of this concept is storage, wherein the sealed bin 6 plays an important role, in this embodiment, the opening plate 22 is adopted, the fixing plate 21 plays a fixing effect, the top plate 20 plays a top sealing effect, the opening plate 22 can achieve the purpose that the dehumidifying element 8 is taken out from the sealed bin 6 by the guiding element 7 through the elastic reset hinge 23, and the opening plate 22 can also ensure that the dehumidifying element 8 is stored by the opening plate 22 when the dehumidifying element 8 is taken back to the sealed bin 6 by the guiding element 7, and meanwhile, the opening direction of the opening plate 22 is the same at the outlet and the inlet of the sealed bin 6, thereby ensuring the opening and closing of the sealed bin 6.
The ventilation grille 2 is provided with a plurality of air inlet holes 24, the sealing element is rotatably arranged on the ventilation grille 2, the sealing element is provided with a sealing blade 25, and the sealing blade 25 controls the air inlet holes 24 to be closed and opened.
In this embodiment, the same as the prior art exists the air inlet 24 on the ventilation grille 2, in order to realize the temporary sealing of the space for detecting the smoke sensation, a sealing member is installed on the ventilation grille 2, and the sealing member can play the role of blocking the air inlet 24, in this embodiment, the sealing member is coaxially and rotatably arranged with the ventilation grille 2, the sealing member adopts the form that the periphery is the sealing blade 25, and the sealing blade 25 blocks the air inlet 24, thereby realizing the temporary sealing.
The sealing element is characterized by further comprising a control module 26, a first driving device 27 and a second driving device 28, wherein the output end of the first driving device 27 is connected with the driving gear 12, the output end of the second driving device 28 is connected with the sealing element, the signal output end of the light receiver 5 is connected with the control module 26, and the control end of the control module 26 is connected with the first driving device 27 and the second driving device 28.
In this embodiment, the control module 26 is installed on the base 1, the control module 26 receives a signal of the light receiver 5 to control the first driving device 27 and the second driving device 28, after the control module 26 receives the signal of the light receiver 5 for the first time, the output end of the second driving device 28 drives the sealing member to close, then the first driving device 27 drives the driving gear 12 to rotate, the dehumidifying mechanism will dehumidify, which is a process of removing interference, i.e. a process of secondary judgment, the first driving device 27 drives the bearing part 11 to rotate for a circle through the transmission part 10 to be considered as an end of operation, after the first driving device 27 finishes operation, if the light receiver 5 does not receive light again, the control module 26 will not receive the signal of the light receiver 5 again, and then it belongs to false alarm, thereby achieving the removal of false alarm interference, if the light receiver 5 receives light again, the control module 26 receives the signal from the light receiver 5, and determines that smoke is detected, and gives an alarm.
An alarm 29 is also included, and the control end of the control module 26 is communicated with the alarm 29.
In this embodiment, the alarm 29 is connected to the control end of the control module 26, and the control module 26 controls the alarm 29 to give an alarm by receiving the signal feedback of the light receiver 5, so as to perform a warning function.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a smoke detector of waterproof fog interference, includes base (1), ventilative grid (2) and sets up light emitter (3), baffler (4), light receiver (5) on base (1) one side, baffler (4) set up light path one side of light emitter (3), one side of baffler (4) is for sheltering from the region, light receiver (5) are located shelter from the region, ventilative grid (2) set up on base (1) opposite side, its characterized in that still includes the dehumidification mechanism that sets up on base (1) and sets up the sealing member on ventilative grid (2), dehumidification mechanism includes sealed storehouse (6), guide piece (7) and dehumidification piece (8), dehumidification piece (8) set up on guide piece (7), dehumidification piece (8) are located sealed storehouse (6), the guide piece (7) is movably arranged on the base (1), and the guide piece (7) can drive the dehumidifying piece (8) to enter or leave the sealed cabin (6).
2. The smoke detector of claim 1, wherein said base (1) has an annular groove (9), said guide (7) comprises a transmission portion (10) and a bearing portion (11), said transmission portion (10) is an annular rack, said transmission portion (10) is disposed in said annular groove (9), said dehumidifying element (8) is disposed on said bearing portion (11), further comprising a driving gear (12), said driving gear (12) is rotatably disposed in said sealed chamber (6) and located in said annular groove (9), said driving gear (12) is engaged with said transmission portion (10).
3. The smoke detector capable of preventing water fog interference according to claim 2, wherein the bearing part (11) is provided with a plug-in slot (13), the dehumidifying element (8) comprises a plug-in element (14), an adsorbing element (15) and a wiping element (16), the plug-in element (14) is inserted into the plug-in slot (13), the wiping element (16) is arranged on one side of the plug-in element (14) close to the light emitter (3), and the adsorbing element (15) is arranged on one side of the plug-in element (14) far away from the light emitter (3).
4. The smoke detector according to claim 3, wherein said wiper member (16) comprises a first wiper (17), a second wiper (18) and a third wiper (19), said third wiper (19) is disposed on one side of said plug member (14) close to said light emitter (3), said first wiper (17) and said second wiper (18) are disposed on both ends of said third wiper (19), a wiping space is formed among said first wiper (17), said second wiper (18) and said third wiper (19), said wiping space is used for passing said light emitter (3).
5. The smoke detector capable of preventing water mist interference according to claim 1, wherein the sealing chamber (6) is arranged on the base (1), the sealing chamber (6) comprises a top plate (20), a fixing plate (21), an opening plate (22) and an elastic reset hinge (23), the fixing plate (21) is at least two, the opening plate (22) is at least four, the opening plate (22) is connected with the fixing plate (21) through the elastic reset hinge (23), the fixing plate (21) is arranged oppositely, the opening plate (22) is in one group, the opening plate (22) is arranged between the fixing plates (21) in two groups, and the top plate (20), the fixing plate (21) and the opening plate (22) form a sealing space.
6. The smoke detector of claim 2, wherein said air permeable grille (2) has a plurality of air inlet holes (24), said sealing member is rotatably disposed on said air permeable grille (2), said sealing member has a sealing blade (25), said sealing blade (25) controls the closing and opening of said air inlet holes (24).
7. The smoke detector of claim 6, further comprising a control module (26), a first driving device (27) and a second driving device (28), wherein an output end of said first driving device (27) is connected to said driving gear (12), an output end of said second driving device (28) is connected to said sealing member, a signal output end of said light receiver (5) is connected to said control module (26), and a control end of said control module (26) is connected to both said first driving device (27) and said second driving device (28).
8. The smoke detector of claim 7, further comprising an alarm (29), wherein a control end of said control module (26) is in communication with said alarm (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115618.7A CN114140976B (en) | 2022-02-07 | 2022-02-07 | Smoke detector capable of preventing water mist interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210115618.7A CN114140976B (en) | 2022-02-07 | 2022-02-07 | Smoke detector capable of preventing water mist interference |
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| Publication Number | Publication Date |
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| CN114140976A true CN114140976A (en) | 2022-03-04 |
| CN114140976B CN114140976B (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210115618.7A Active CN114140976B (en) | 2022-02-07 | 2022-02-07 | Smoke detector capable of preventing water mist interference |
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| CN (1) | CN114140976B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114648851A (en) * | 2022-05-23 | 2022-06-21 | 中用科技(南通)有限公司 | Sensing device of wisdom mill |
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| WO2007013483A1 (en) * | 2005-07-26 | 2007-02-01 | Matsushita Electric Industrial Co., Ltd. | Dehumidifier |
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| CN114648851A (en) * | 2022-05-23 | 2022-06-21 | 中用科技(南通)有限公司 | Sensing device of wisdom mill |
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| CN114140976B (en) | 2022-05-17 |
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