CN216310999U - Smoke-sensitive fire detector - Google Patents

Abstract

The utility model discloses a smoke fire detector which comprises a circular truncated cone, a lower shell, an upper shell, a fixed abdicating groove, a first filter screen, a V-shaped groove, a second filter screen, a transmitting unit, a guide plate, a receiving unit and a light screen, wherein the upper shell is arranged at the upper part of the lower shell, the lower edge of the lower shell vertically extends downwards, the center of the lower shell is provided with the circular truncated cone, the lower edge of the circular truncated cone is flush with the lower edge of the lower shell, the upper part of the circular truncated cone is correspondingly communicated with the inner part of the lower shell, a plurality of abdicating grooves are uniformly arranged on the side wall of the lower shell at equal angles, the first filter screen is arranged in the abdicating grooves, a plurality of guide plates are uniformly arranged on the inner wall of the lower shell at equal angles, and the guide plates are obliquely arranged. The utility model overcomes the defects of the prior art, can enlarge the smoke sensing channel for communicating with the outside and feeding smoke, enlarge the smoke feeding area, improve the smoke sensing performance and prevent mosquitoes and the like from flying in.

Description

Smoke-sensitive fire detector

Technical Field

The utility model relates to the technical field of fire detectors, in particular to a smoke-sensitive fire detector.

Background

The smoke detector is a detector for responding solid or liquid particles generated by combustion and/or pyrolysis suspended in the atmosphere and can be subdivided into ion smoke, photoelectric smoke, infrared beams, an air suction type and the like, the smoke alarm is taken as a fire detection device in the field of security protection, is increasingly emphasized by people, and is widely applied to public places such as houses, office buildings, schools, hospitals and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of overcoming the defects of the prior art and provides a smoke fire detector which can enlarge a smoke sensing channel for communicating with the outside and enabling smoke to enter, enlarge the smoke entering area, improve the smoke sensing performance and prevent mosquitoes and the like from flying in.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: a smoke fire detector comprises a round table, a lower shell, an upper shell, a fixing groove, a abdicating groove, a first filter screen, a V-shaped groove, a second filter screen, a transmitting unit, a guide plate, a receiving unit and a shading plate, wherein the upper shell is arranged at the upper part of the lower shell, the lower edge of the lower shell vertically extends downwards, the center of the lower shell is provided with the round table, the lower part of the round table is flush with the lower edge of the lower shell, the upper part of the round table is correspondingly communicated with the inner part of the lower shell, a plurality of abdicating grooves are uniformly arranged at equal angles on the side wall of the lower shell, the first filter screen is arranged in the abdicating groove, a plurality of guide plates are uniformly arranged at equal angles on the inner wall of the lower shell, the guide plates are obliquely arranged, the guide plates and the abdicating grooves are arranged at intervals, and the guide plates, the upper shell and the lower shell are matched to form a smoke dark room, the lower part of the upper shell is provided with a transmitting unit and a receiving unit, the transmitting unit and the receiving unit are both positioned in a smoke-sensitive darkroom, and a light shielding plate for preventing light rays of the transmitting unit from directly irradiating into the receiving unit is arranged between the transmitting unit and the receiving unit.

Further, the guide plate is arc thin slice structure, and a plurality of guide plates slope the superpose in proper order, all constitute the smoke sensing passageway between every two adjacent guide plates, and the smoke sensing passageway is used for and can advances the cigarette with external intercommunication, and the clearance design of smoke sensing passageway needs to be little relatively to stop flies into such as mosquito.

Furthermore, the light shielding plate is arranged on an angle bisection line of an included angle between optical axes of the transmitting unit and the receiving unit, the foremost end of the light shielding plate does not exceed an intersection point of the optical axes of the transmitting unit and the receiving unit, and light rays of the transmitting unit can be effectively prevented from directly irradiating into the receiving unit.

Furthermore, the two ends of the light screen are of crotch structures, so that the light shielding area of the light screen can be increased.

Further, the lower part of round platform is uncovered, the lower part of round platform is provided with No. two filter screens, the lower part edge of round platform is the even division of angle has a plurality of V type groove, can expand into the cigarette passageway through the round platform lower part, and can block that mosquitoes and so on fly into.

Furthermore, the upper shell and the lower shell are correspondingly screwed, and two fixing lugs are symmetrically arranged on the side wall of the upper shell, so that the installation and the disassembly are convenient.

Compared with the prior art, the utility model has the advantages that: the receding groove, the round platform, the first filter screen and the second filter screen are arranged, so that a smoke sensing channel can be enlarged and used for being communicated with the outside and allowing smoke to enter, the smoke inlet area is enlarged, the smoke sensing performance is improved, and mosquitoes and the like can be prevented from flying into the receding groove.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a perspective view of a baffle of the present invention.

As shown in the figure: 1. a circular truncated cone; 2. a lower housing; 3. an upper housing; 4. fixing the substrate; 5. a yielding groove; 6. a first filter screen; 7. a V-shaped groove; 8. a second filter screen; 9. a transmitting unit; 10. a baffle; 11. a receiving unit; 12. a light shading plate.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

The present invention will be described in further detail with reference to the accompanying drawings.

When the smoke fire detector is implemented specifically, the smoke fire detector comprises a circular table 1, a lower shell 2, an upper shell 3, a fixing device 4, a abdicating groove 5, a first filter screen 6, a V-shaped groove 7, a second filter screen 8, an emitting unit 9, a guide plate 10, a receiving unit 11 and a light shielding plate 12, wherein the upper shell 3 is arranged at the upper part of the lower shell 2, the upper shell 3 and the lower shell 2 are correspondingly screwed, and two fixing lugs are symmetrically arranged on the side wall of the upper shell 3, so that the smoke fire detector is convenient to mount and dismount. The lower edge of the lower shell 2 vertically extends downwards, the center of the lower shell 2 is provided with a round platform 1, the lower part of the round platform 1 is flush with the lower edge of the lower shell 2, the upper part of the round platform 1 is correspondingly communicated with the interior of the lower shell 2, the lower part of the round platform 1 is open, the lower part of the round platform 1 is provided with a second filter screen 8, the lower edge of the round platform 1 is uniformly provided with a plurality of V-shaped grooves 7 at equal angles, the side wall of the lower shell 2 is uniformly provided with a plurality of abdicating grooves 5 at equal angles, the inside of the abdicating groove 5 is provided with a first filter screen 6, the inner wall of the lower shell 2 is uniformly provided with a plurality of guide plates 10 at equal angles, the guide plates 10 are obliquely arranged, the guide plates 10 and the abdicating grooves 5 are arranged at intervals, so that a smoke sensing channel is increased to be communicated with the outside and can feed smoke, the smoke area is enlarged, and the smoke sensing performance is improved, and can prevent mosquitoes and the like from flying in. The guide plate 10, the upper shell 3 and the lower shell 2 are matched to form a smoke-sensitive dark room, the lower part of the upper shell 3 is provided with a transmitting unit 9 and a receiving unit 11, the emitting unit 9 and the receiving unit 11 are both positioned in a smoke-sensitive dark room, a light shielding plate 12 for preventing the light of the emitting unit 9 from directly irradiating the receiving unit 11 is arranged between the emitting unit 9 and the receiving unit 11, the guide plates 10 are arc-shaped thin-sheet structures, a plurality of guide plates 10 are obliquely superposed in sequence, a smoke sensing channel is formed between every two adjacent guide plates 10, the light-shielding plate 12 is arranged on the angular bisector of the angle between the optical axes of the emission unit 9 and the receiving unit 11, the foremost end of the light-shielding plate 12 does not exceed the intersection of the optical axes of the emitting unit 9 and the receiving unit 11, the two ends of the light screen 12 are of a fork structure, so that light rays of the emitting unit can be effectively prevented from directly irradiating into the receiving unit.

The working principle of the utility model is as follows: let groove 5 and round platform 1 can increase and feel the cigarette passageway and be used for and can advance the cigarette with external intercommunication, enlarge into the cigarette area, improve and feel the cigarette performance, a filter screen 6 and No. two filter screens 8 cooperate and can block flies into such as mosquito, and guide plate 10 leads the flue gas, and light screen 12 can prevent effectively that the light of transmitting element 9 from directly shining and kicking into receiving element 11 simultaneously, improves and feels the cigarette degree of accuracy.

The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (6)

1. A smoke fire detector, characterized by: the anti-collision device comprises a circular truncated cone (1), a lower shell (2), an upper shell (3), a fixing structure (4), a yielding groove (5), a first filter screen (6), a V-shaped groove (7), a second filter screen (8), a transmitting unit (9), a guide plate (10), a receiving unit (11) and a light shielding plate (12), wherein the upper shell (3) is arranged at the upper part of the lower shell (2), the lower edge of the lower shell (2) vertically extends downwards, the center of the lower shell (2) is provided with the circular truncated cone (1), the lower part of the circular truncated cone (1) and the lower edge of the lower shell (2) are flushed mutually, the upper part of the circular truncated cone (1) and the inner part of the lower shell (2) are correspondingly communicated, the side wall of the lower shell (2) is uniformly provided with a plurality of yielding grooves (5) at equal angles, the first filter screen (6) is arranged inside the yielding groove (5), the inner wall of the lower shell (2) is uniformly provided with a plurality of guide plates (10) at equal angles, ) Guide plate (10) slope sets up, guide plate (10) and groove (5) interval arrangement of stepping down, guide plate (10), last casing (3) and lower casing (2) cooperate and form the smoke darkroom, it is provided with transmitting element (9) and receiving element (11) to go up casing (3) lower part, transmitting element (9) and receiving element (11) all are located inside the smoke darkroom, be provided with between transmitting element (9) and receiving element (11) and prevent that the light of transmitting element (9) from directly shining light screen (12) into receiving element (11).

2. A smoke fire detector as claimed in claim 1, wherein: the guide plates (10) are of arc-shaped sheet structures, the guide plates (10) are sequentially obliquely superposed, and a smoke sensing channel is formed between every two adjacent guide plates (10).

3. A smoke fire detector as claimed in claim 1, wherein: the light shielding plate (12) is arranged on an angle bisection line of an included angle of optical axes of the emitting unit (9) and the receiving unit (11), and the foremost end of the light shielding plate (12) does not exceed an intersection point of the optical axes of the emitting unit (9) and the receiving unit (11).

4. A smoke fire detector as claimed in claim 3, wherein: and two ends of the light screen (12) are of a crotch structure.

5. A smoke fire detector as claimed in claim 1, wherein: the lower part of the round platform (1) is open, the lower part of the round platform (1) is provided with a second filter screen (8), and the lower edge of the round platform (1) is uniformly provided with a plurality of V-shaped grooves (7) at equal angles.

6. A smoke fire detector as claimed in claim 1, wherein: the upper shell (3) and the lower shell (2) are correspondingly screwed, and two fixing lugs are symmetrically arranged on the side wall of the upper shell (3).

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