CN111179539A - Labyrinth structure of smoke detector - Google Patents
Labyrinth structure of smoke detector Download PDFInfo
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- CN111179539A CN111179539A CN202010061336.4A CN202010061336A CN111179539A CN 111179539 A CN111179539 A CN 111179539A CN 202010061336 A CN202010061336 A CN 202010061336A CN 111179539 A CN111179539 A CN 111179539A
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- labyrinth
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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Abstract
The invention aims to solve the problem that the smoke inlet holes of the labyrinth structure of the existing smoke detector are arranged on the side surface, so that the smoke sensitivity of the detector to smoke from different directions is inconsistent, and provides the labyrinth structure of the smoke detector, which comprises a labyrinth seat, a labyrinth cover buckled on the labyrinth seat, and a transmitting device and a receiving device which are arranged between the labyrinth seat and the labyrinth cover, wherein the labyrinth cover is provided with the smoke inlet holes which are arranged at the top of the labyrinth cover; by adopting the labyrinth structure of the smoke detector, the smoke inlet path lengths of the detector in all directions are basically the same, so that the sensitivity of the detector to smoke from all directions is basically consistent, the influence of the entering direction and airflow speed of the smoke on the performance of the detector can be reduced or avoided, and the reasonable setting of an alarm threshold value is facilitated; in addition, because the smoke inlet hole faces downwards when the dust collecting device is used, impurities such as dust are difficult to enter the inside of the labyrinth through the smoke inlet hole, and the false alarm caused by the dust can be effectively reduced.
Description
Technical Field
The invention relates to the field of smoke alarm, in particular to a labyrinth structure of a smoke detector.
Background
The existing detector generally comprises a shell and a labyrinth structure arranged inside the shell, wherein an infrared light emitting device and an infrared light receiving device are arranged in the labyrinth, a blocking structure is arranged between the infrared light emitting device and the infrared light receiving device, and the blocking structure blocks infrared light emitted by the infrared light emitting device and prevents the infrared light from directly irradiating the infrared light receiving device. The outer shell is provided with a through hole, the labyrinth structure is provided with a smoke inlet, and smoke in the surrounding environment can penetrate through the through hole in the outer shell and enter the labyrinth structure from the smoke inlet. Under normal environment, no smoke exists around the detector, infrared light emitted by the infrared light emitting device is blocked by the blocking structure, and the receiving device cannot receive enough infrared light, so that an alarm signal cannot be sent out; when smoke is generated in the surrounding environment, the smoke enters the inside of the labyrinth structure, infrared light emitted by the light emitting device is scattered when encountering the smoke, so that the receiving device can receive more infrared light, and when the intensity of the received light exceeds a set alarm threshold value, an alarm signal is sent out.
The smoke inlet of the conventional smoke detector is arranged on the side wall of the labyrinth, the outer shell covers the outside of the labyrinth, the side wall of the outer shell is provided with a smoke inlet channel, the smoke inlet channel is divided into a plurality of small channels by a plurality of vertically arranged connecting columns, and when a fire disaster occurs, if the smoke direction is over against the connecting columns, the smoke is shielded by the connecting columns and cannot smoothly enter the smoke inlet of the labyrinth, so that the time for detecting the smoke is longer; if the smoke is over against the small channel, the smoke can directly enter the labyrinth, and the time for detecting the smoke is short, so that the reaction speeds of the detector to the smoke from different directions are inconsistent, the reaction speeds of the detector to the same smoke but the smoke from different directions are different, and the real situation that the alarm cannot accurately reflect the smoke brings trouble to the setting of an alarm threshold; in addition, the through hole and the smoke inlet on the shell are arranged on the side face, dust easily flies into the labyrinth structure, and misinformation is caused sometimes due to the entering of the dust.
Disclosure of Invention
The invention aims to provide a labyrinth structure of a smoke detector, aiming at the problem that the sensitivity of the detector to smoke from different directions is inconsistent because the smoke inlet holes of the labyrinth structure of the existing smoke detector are arranged on the side surface.
The technical purpose of the invention is realized by the following technical scheme:
a labyrinth structure of a smoke detector comprises a labyrinth seat, a labyrinth cover buckled on the labyrinth seat, and an emitting device and a receiving device which are arranged between the labyrinth seat and the labyrinth cover, wherein a smoke inlet hole is formed in the labyrinth cover and is arranged at the top of the labyrinth cover;
furthermore, the labyrinth cover is in a circular truncated cone shape, the top end of the labyrinth cover is a small-diameter end, the bottom end of the labyrinth cover is a large-diameter end, and the bottom end of the labyrinth cover is open and is connected with the labyrinth seat;
furthermore, the transmitting device comprises a first transmitting device and a second transmitting device, the first receiving device and the first transmitting device form a large-angle transmitting-receiving device, the second transmitting device and the second receiving device form a small-angle transmitting-receiving device, the first transmitting device and the second transmitting device are arranged oppositely, and the first transmitting device and the second transmitting device alternately transmit signals;
furthermore, the labyrinth seat is provided with two U-shaped large scattering walls and two U-shaped small scattering walls, and the opening ends of the large scattering walls and the small scattering walls are outwards expanded towards two sides; the openings of the two large scattering walls are arranged oppositely, the openings of the two small scattering walls are arranged oppositely, one large scattering wall is positioned between the first transmitting device and the receiving device, and the other small scattering wall is positioned between the second transmitting device and the receiving device;
furthermore, a plurality of step structures are arranged on the inner wall of the large scattering wall at the opening end, and the surfaces of the two steps are vertical to each other;
furthermore, the end faces of the opening ends of the large scattering wall and the small scattering wall are both inwards recessed;
the receiving installation seat and the transmitting installation seat are respectively provided with installation holes, the receiving device and the transmitting device are arranged in the corresponding installation holes, one end of the installation seat facing the center is provided with a first auxiliary scattering surface and a second auxiliary scattering surface, the first auxiliary scattering surface is perpendicular to a connecting line a of the centers of the two large scattering walls, and the second auxiliary scattering surface is perpendicular to a connecting line b of the centers of the two small scattering walls;
furthermore, the receiving mounting seat and the transmitting mounting seat respectively comprise a base fixedly arranged on the labyrinth seat, a top seat fixedly arranged in the labyrinth cover and two baffles, one part of the mounting hole is positioned on the top seat, the other part of the mounting hole is positioned on the base, the two baffles are positioned on two sides of the corresponding mounting hole and shield a gap between the corresponding top seat and the base, and the baffles are fixedly arranged on the base or the top seat;
furthermore, a plurality of circular convex edges are arranged on the wall of the mounting hole of the emission mounting seat, the convex edges are coaxial with the mounting hole, and the axial section of each convex edge is triangular;
furthermore, two straight surrounding walls perpendicular to a connecting line a of the centers of the two large scattering walls and two curved surrounding walls which are matched with the inner wall of the labyrinth cover in shape are fixedly arranged in the labyrinth cover, the straight surrounding walls and the curved surrounding walls are arranged at intervals in an end-to-end mode to surround and form a labyrinth detection chamber, and the receiving device, the transmitting device, the large scattering walls, the small scattering walls and the smoke inlet holes are all located in the labyrinth detection chamber.
The invention has the following beneficial effects:
by adopting the labyrinth structure of the smoke detector, the smoke inlet hole of the labyrinth structure is arranged at the top of the labyrinth cover, so that when the smoke detector is used, the smoke inlet hole is positioned below the labyrinth structure, smoke entering the shell of the smoke detector from all directions needs to be gathered to the lower area in the shell firstly, and then enters the smoke inlet hole upwards, the smoke inlet path lengths of the smoke detector in all directions are basically the same, the sensitivity of the smoke detector to the smoke from all directions is basically consistent, the influence of the smoke entering direction and the airflow speed on the performance of the smoke detector can be reduced or avoided, and the reasonable setting of an alarm threshold value is facilitated; in addition, because the smoke inlet hole faces downwards when the dust collecting device is used, impurities such as dust are difficult to enter the inside of the labyrinth through the smoke inlet hole, and the false alarm caused by the dust can be effectively reduced.
Drawings
FIG. 1 is a schematic structural view of an embodiment of the labyrinth configuration of the smoke detector of the present invention;
FIG. 2 is a schematic diagram of a front view of a labyrinth seat in which a transmitter and a receiver are disposed according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of the positions of the transmitting and receiving mounts of an embodiment of the invention with the diffuser walls hidden;
FIG. 4 is a schematic structural diagram of a labyrinth seat according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an embodiment of the labyrinth cover of the invention.
Reference number legend, 10, labyrinth seat; 20. a labyrinth cover; 21. a smoke inlet hole; 22. covering the top; 23. a cover wall; 24. a straight surrounding wall; 25. a curved surrounding wall;
31. a first infrared emission tube; 32. a second infrared emission tube; 40. an infrared receiving tube;
51. a first large scattering wall; 52. a second large scattering wall; 53. a first small scattering wall; 54. a second small scattering wall;
60. receiving the mounting seat; 61. a receiving base; 62. receiving a top seat; 63. a receiving baffle; 70. a launch mount; 71. a launch base; 72. a launching footstock; 73. an emission baffle; 74. a rib; 81. a first auxiliary scattering surface; 82. and a second auxiliary scattering surface.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals.
A smoke detector labyrinth structure is shown in figure 1, and comprises a detector shell and a labyrinth structure, wherein the labyrinth structure is arranged in the smoke detector shell, and the shell covers the labyrinth structure.
The labyrinth structure of the smoke detector comprises a labyrinth seat 10 and a labyrinth cover 20 buckled on the labyrinth seat 10. As shown in fig. 2 and 3, a transmitting device for detecting smoke and an infrared ray receiving tube 40 are provided between the labyrinth seat 10 and the labyrinth cover 20. As shown in fig. 1 in conjunction with fig. 5, the labyrinth cover 20 includes a cover wall and a cover top provided at the top, and a smoke inlet 21 is provided on the cover top of the labyrinth cover 20. When the smoke detector adopting the labyrinth structure is used, the detector is inverted, the cover top of the labyrinth cover 20 faces downwards, the smoke inlet 21 is positioned below the labyrinth and faces the indoor space, no matter which direction the smoke source enters the detector shell from which direction, the smoke inlet cannot directly enter the labyrinth, the smoke source is diffused along the gap between the inner wall of the shell and the outer wall of the labyrinth and is converged into the lower area of the labyrinth cover, and then enters the labyrinth structure through the smoke inlet 21, so that the sensing time of the detector for the smoke from different directions is basically consistent, the response speed, namely the sensitivity, of the smoke from all directions is basically consistent, the stability of smoke detection can be kept, and meanwhile, the reasonable setting of an alarm threshold value is facilitated. In addition, because the smoke inlet hole 21 faces downwards when the dust collecting device is used, sundries such as dust are difficult to naturally move upwards, and enter the inside of the labyrinth through the smoke inlet hole 21, the false alarm caused by the entering of the dust can be effectively reduced. And this labyrinth structure has only changed the position of seting up of advancing the cigarette hole, and is little to labyrinth structure inside influence, can be applicable to various types of smoke detector.
In order to accelerate the smoke inlet speed and improve the response speed of the alarm to smoke, the labyrinth cover 20 is set to be in a circular truncated cone shape, the bottom end of the labyrinth cover is a large-diameter end and is connected with the labyrinth seat 10, and the top end of the labyrinth cover is a small-diameter end. By adopting the circular truncated cone structure, smoke is favorably gathered along the direction of the side wall of the circular truncated cone towards the cover top, the speed of the smoke entering the labyrinth through the smoke inlet hole 21 is favorably increased, and the reaction speed of the detector to the smoke is increased.
in order to make the maze have better sensitivity to black smoke and white smoke, the emitting device adopts an infrared emitting device, as shown in fig. 2, and two emitting devices are arranged oppositely, wherein one emitting device and a corresponding receiving device form a large-angle emitting-receiving device, the other emitting device and a corresponding receiving device form a small-angle emitting-receiving device, wherein the large-angle emitting-receiving device is sensitive to white smoke, the small-angle emitting-receiving device is sensitive to black smoke, a control device can be arranged to control the large-angle emitting-receiving device and the small-angle emitting-receiving device to work alternately, when the light signal value collected by the large-angle emitting-receiving device reaches the alarm threshold value of the white smoke, white smoke alarm is confirmed, when the light signal value collected by the small-angle emitting-receiving device reaches the alarm threshold value of the black smoke, black smoke alarm is confirmed, thus no matter the black smoke and the white smoke, the detector can detect the mechanical structure and the control circuit structure of the detector sensitively, two groups of the two emitting-receiving devices can share one infrared emitting tube 40, the infrared emitting device and the infrared emitting device are arranged in the infrared emitting tube 32, the infrared emitting tube 32 and the infrared receiving tube 32, the infrared receiving device is arranged in the area, the infrared emitting tube 32, the infrared receiving tube 32, the infrared emitting tube 32 is arranged in parallel to the infrared receiving tube 32, the infrared emitting tube 32, the infrared receiving device, the infrared receiving tube 32, and the infrared receiving tube 32, the infrared emitting tube 32, and the infrared receiving device is arranged in the infrared receiving tube 32, and the infrared receiving tube 32, and the infrared emitting tube 32, the infrared receiving device.
in order to make the infrared ray receiving tube 40 receive the infrared ray emitted by the emitting device as little as possible under the smokeless condition, scattering walls are arranged on the labyrinth base 10 as a blocking structure, as shown in fig. 2 and 4, a pair of large scattering walls 51 and a pair of large scattering walls 52, a pair of small scattering walls 53 and a pair of small scattering walls 54 are respectively arranged, the four scattering walls are all in a U shape, the opening ends of the scattering walls are all outwards opened towards two sides, a certain distance is reserved between the top of the scattering walls and the cover top, the large scattering walls 51 are arranged between the infrared ray emitting tube 31 and the infrared ray receiving tube 40, the infrared ray emitted by the infrared ray emitting tube 31 is blocked from directly entering the infrared ray receiving tube 40, the structures of the large scattering walls 52 and the large scattering walls 51 are identical to the structures of the large scattering walls 51 and the cover top, the small scattering walls 51 are arranged between the infrared ray emitting tube 32 and the infrared ray receiving tube 40, the scattering walls 53 are arranged between the infrared ray emitting tube 32 and the infrared ray receiving tube 40, the small scattering walls 54 and the scattering walls 52 are arranged in a linear range, the interval between the small scattering walls, the interval between the infrared ray receiving tube 5 and the interval, the interval between the infrared ray emitting tube 40, the interval between the infrared ray receiving tube 40, the interval between the scattering walls, the interval between the small scattering walls, the interval between the infrared ray emitting tube and the interval between the infrared ray receiving tube 5 and the interval between the infrared ray receiving tube 40, the infrared ray receiving tube 5 and the infrared ray receiving tube 40, the infrared ray receiving tube, the interval between the interval and the interval between the infrared ray receiving tube, the interval between the infrared ray receiving tube, the interval between the interval.
In order to improve the scattering effect of the large scattering wall, the inner wall of the open end of the large scattering wall can be arranged into a multi-stage step shape, and/or the outward opening angle of the open end is increased. Wherein the two mutually perpendicular surfaces forming the step shape are perpendicular to the line a and the line b, respectively, so that the light rays impinging on the step can be returned in parallel and opposite directions after being reflected twice, reducing the possibility that the scattering wall reflects the light rays directly to the infrared receiving tube 40. In order to further improve the scattering effect of the scattering wall, the end faces of the opening ends of the large scattering wall and the small scattering wall can be set to be inwards concave arc faces or folding faces, the end face of the opening end of the large scattering wall is an inwards concave arc face, and the end face of the opening end of the small scattering wall is an inwards concave folding face.
For stable mounting of the infrared ray receiving tube 40 and the infrared ray emitting tube, a receiving mount 60 and an emitting mount 70 may be provided. As shown in fig. 3, the receiving mount 60 has a mounting hole at an end facing between the scattering walls, the mounting hole is coaxial with the infrared ray receiving tube 40, the infrared ray receiving tube 40 is disposed in the mounting hole of the receiving mount 60, and the mounting hole of the receiving mount 60 can block ambient stray light so that the infrared ray receiving tube can receive only light from the front. The emission mounting base 70 is also provided with a mounting hole towards one end between each scattering wall, the mounting hole on the emission mounting base 70 is coaxial with the corresponding infrared emission tube, and in the mounting hole on the emission mounting base 70 that the infrared emission tube is installed correspondingly, the mounting hole on the emission mounting base 70 can block the infrared emission tube from emitting light to the periphery, and the light is constrained to be a light beam, which is beneficial to reducing unnecessary stray light. In order to facilitate the installation of the infrared ray receiving tube 40 and the infrared ray emitting tube, the receiving mount 60 and the emitting mount 70 may be formed as a separate body, which is divided into an upper portion and a lower portion, and respectively installed on the labyrinth seat 10 and the labyrinth cover 20. Referring to fig. 3, 4 and 5, the receiving base 60 of the present embodiment includes a receiving base 61 fixedly disposed on the labyrinth base 10 and a receiving top base 62 fixedly disposed in the labyrinth cover 20, a portion of the mounting hole of the receiving base 60 is disposed on the receiving top base 62, another portion is disposed on the receiving base 61, preferably, two receiving baffles 63 are disposed, the two receiving baffles 63 are disposed on two sides of the mounting hole of the receiving base 60 respectively, and can block the gap between the receiving top base 62 and the receiving base 61 for blocking light from entering from the gap, the receiving baffles 63 can be fixedly disposed on the receiving base 61 or the receiving top base 62, and the receiving baffles 63 are disposed on the receiving top base 62 in the present embodiment. The launching mount 70 comprises a launching base 71 fixedly arranged on the labyrinth seat 10 and a launching footstock 72 fixedly arranged in the labyrinth cover 20, one part of a mounting hole of the launching mount 70 is positioned on the launching footstock 72, the other part is positioned on the launching base 71, preferably, two launching baffles 73 are arranged, the two launching baffles 73 are respectively positioned at two sides of the mounting hole of the launching mount 70 and can shield a gap between the launching footstock 72 and the launching base 71 and used for preventing light rays from being emitted from the gap, the launching baffles 73 can be fixedly arranged on the launching base 71 or the launching footstock 72, and the launching baffles 73 are arranged on the launching footstock 72 in the embodiment.
As shown in fig. 2 and 3, a first auxiliary scattering surface 81 perpendicular to the connecting line a and a second auxiliary scattering surface 82 perpendicular to the connecting line b may be disposed at one end of the mounting base facing the region between the scattering walls, so that the light emitted from the gap between the large scattering wall and the small scattering wall to the auxiliary scattering walls is not reflected back to the space between the scattering walls, thereby improving the scattering effect of the maze. As shown in fig. 3 and 4, a plurality of semicircular convex ribs 74 may be disposed on the wall of the mounting hole of the emission mounting base 70, the convex ribs 74 are coaxial with the mounting hole, and the axial cross section of each convex rib 74 is triangular. In order to reduce the weight of the labyrinth cover, the top seat of each mounting seat can be set to be a hollow shell shape, as long as the part positioned in the labyrinth structure can realize the corresponding function.
In order to concentrate the smoke around the infrared ray receiving tube 40, the emitting device and the scattering wall more effectively and to improve the sensitivity of the maze, an enclosure wall may be provided in the maze cover 20 to enclose the infrared ray receiving tube 40, the emitting device, the scattering wall and the smoke inlet 21, as shown in fig. 5. Because the infrared receiving tube 40, the emitting device and the scattering wall are concentrated in a region similar to a rectangle, two straight surrounding walls 24 perpendicular to the connecting line a and two curved surrounding walls 25 with the shape matched with the inner wall of the labyrinth cover 20 can be fixedly arranged in the truncated cone-shaped labyrinth cover 20, so that the straight surrounding walls 24 and the curved surrounding walls 25 are arranged at intervals and are connected end to enclose a labyrinth detection chamber, and smoke is concentrated in the labyrinth detection chamber by the top wall of the labyrinth cover 20, the labyrinth seat 10 and the surrounding walls. The labyrinth seat 10 is preferably adapted to the shape enclosed by the enclosure walls. Above-mentioned structure can effectively gather together the smog that enters into in the maze, has improved the concentration of smog to a certain extent, has improved the sensitive degree of detecting device to smog.
The labyrinth cover 20 and the labyrinth base 10 may be connected by means of a snap connection, a pin connection, a threaded connection or by means of gluing, welding or the like.
The specific examples are merely illustrative of the invention and are not intended to be limiting.
Claims (10)
1. The utility model provides a smoke detector labyrinth structure, includes labyrinth seat (10), labyrinth lid (20) of lock on labyrinth seat (10) and sets up emitter and receiving arrangement between labyrinth seat (10) and labyrinth lid (20), is provided with on labyrinth lid (20) into smoke hole (21), its characterized in that: the smoke inlet hole (21) is arranged at the top of the labyrinth cover (20).
2. The smoke detector labyrinth structure as claimed in claim 1, wherein: the labyrinth cover (20) is in a circular truncated cone shape, the top end of the labyrinth cover is a small-diameter end, the bottom end of the labyrinth cover is a large-diameter end, and the bottom end of the labyrinth cover is open and connected with the labyrinth seat (10).
3. The smoke detector labyrinth structure as claimed in claim 1, wherein: the transmitting device comprises a first transmitting device and a second transmitting device, the first transmitting device and the second receiving device are arranged in a single mode, the first transmitting device and the first receiving device form a large-angle transmitting-receiving device, the second transmitting device and the second receiving device form a small-angle transmitting-receiving device, the first transmitting device and the second transmitting device are arranged oppositely, and the first transmitting device and the second transmitting device alternately transmit signals.
4. The smoke detector labyrinth structure as claimed in claim 3, wherein: two U-shaped large scattering walls and two U-shaped small scattering walls are arranged on the labyrinth seat (10), and the opening ends of the large scattering walls and the small scattering walls are outwards expanded towards two sides; the openings of the two large scattering walls are arranged oppositely, the openings of the two small scattering walls are arranged oppositely, one large scattering wall is positioned between the first transmitting device and the receiving device, and the other small scattering wall is positioned between the second transmitting device and the receiving device.
5. The smoke detector labyrinth structure as claimed in claim 4, wherein: the inner wall of the large scattering wall at the opening end is provided with a plurality of step structures, and the surfaces of two steps are vertical to each other.
6. The smoke detector labyrinth structure as claimed in claim 4, wherein: the end faces of the open ends of the large scattering wall and the small scattering wall are both inwards concave.
7. The smoke detector labyrinth structure as claimed in claim 4, wherein: the novel LED lamp is characterized by further comprising a receiving mounting seat (60) and an emitting mounting seat (70), mounting holes are formed in the receiving mounting seat (60) and the emitting mounting seat (70) respectively, the receiving device (40) and the emitting device are arranged in the corresponding mounting holes, a first auxiliary scattering surface (81) and a second auxiliary scattering surface (82) are arranged at one end, facing the center, of the mounting seats, the first auxiliary scattering surface (81) is perpendicular to a connecting line a of the centers of the two large scattering walls, and the second auxiliary scattering surface (82) is perpendicular to a connecting line b of the centers of the two small scattering walls.
8. The smoke detector labyrinth structure as claimed in claim 7, wherein: receive mount pad (60) and transmission mount pad (70) and all including fixed base, the fixed footstock and two baffles that set up in labyrinth lid (20) that set up on labyrinth seat (10), another part is located base (11) on the mounting hole partly is located footstock (22), and two baffles are located the both sides that correspond the mounting hole and shelter from the clearance that corresponds between footstock and the base, and the baffle is fixed to be set up on base (11) or footstock (22).
9. The smoke detector labyrinth structure as claimed in claim 7, wherein: the wall of the mounting hole of the emission mounting seat (70) is provided with a plurality of circular convex ribs (74), and the convex ribs (74) are coaxial with the mounting hole and have triangular axial sections.
10. The smoke detector labyrinth structure as claimed in claim 4, wherein: the labyrinth cover (20) internal fixation is provided with two straight leg walls (24) perpendicular to the line a connecting the centers of the two large scattering walls, and two curved leg walls (25) with the shape of the inner wall of the labyrinth cover (20) being suitable, the straight leg walls (24) and the curved leg walls (25) are arranged at intervals and are enclosed to form a labyrinth detection chamber, and the receiving device (40), the transmitting device, the large scattering walls, the small scattering walls and the smoke inlet holes (21) are all located in the labyrinth detection chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010061336.4A CN111179539A (en) | 2020-01-19 | 2020-01-19 | Labyrinth structure of smoke detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010061336.4A CN111179539A (en) | 2020-01-19 | 2020-01-19 | Labyrinth structure of smoke detector |
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| CN111179539A true CN111179539A (en) | 2020-05-19 |
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| CN202010061336.4A Pending CN111179539A (en) | 2020-01-19 | 2020-01-19 | Labyrinth structure of smoke detector |
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| CN112466084A (en) * | 2020-11-25 | 2021-03-09 | 江苏中实电子有限公司 | Electrical fire monitoring detector and alarm method thereof |
| CN114926953A (en) * | 2022-06-07 | 2022-08-19 | 浙江中辰城市应急服务管理有限公司 | Labyrinth passive power device with cyclone function |
| CN118190738A (en) * | 2024-05-20 | 2024-06-14 | 天津航空机电有限公司 | Maze structure based on polarized light and civil aircraft smoke detector |
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| CN114926953B (en) * | 2022-06-07 | 2024-01-19 | 浙江中辰城市应急服务管理有限公司 | Labyrinth passive power device with cyclone function |
| CN118190738A (en) * | 2024-05-20 | 2024-06-14 | 天津航空机电有限公司 | Maze structure based on polarized light and civil aircraft smoke detector |
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