CN214098635U

CN214098635U - Labyrinth type smoke sensor

Info

Publication number: CN214098635U
Application number: CN202022979255.0U
Authority: CN
Inventors: 杨昌辉
Original assignee: Shenzhen Qianhai Aoruina Safety Technology Co ltd
Current assignee: Shenzhen Qianhai Aoruina Safety Technology Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-08-31
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a labyrinth smoke transducer, smoke transducer is including bottom and upper cover, the edge of upper cover is formed with downwardly extending's cylindric lateral wall, the bottom lid fits the lower extreme opening part of cylindric lateral wall, on cover and be formed with the inner tube, the inner tube is located the inboard of cylindric lateral wall and be equipped with annular gap between the two, wear to be equipped with infra-red transmitter and infrared receiver on the bottom, infra-red transmitter with infrared receiver is down "V" shape and sets up, just infra-red transmitter's transmitting terminal with infrared receiver's receiving terminal all moves towards the inside cavity of inner tube, the inner tube with be formed with the bottom clearance that is used for leading-in smog between the bottom, the cylindric lateral wall is latticed. The utility model discloses enable inside smog distribution even, can detect smog more timely, accurately, and then promote smog response accuracy and reliability.

Description

Labyrinth type smoke sensor

Technical Field

The utility model relates to an inductor for fire control especially relates to a labyrinth smoke transducer.

Background

In a fire-fighting system, a smoke sensing device is an important facility for collecting smoke states and is generally arranged on an indoor ceiling of a building, a smoke sensor in the smoke sensing device generally adopts an infrared geminate transistor mode to realize smoke detection, a labyrinth is required to be arranged at a detection end of the infrared geminate transistor in the structure, and when smoke enters the labyrinth, the infrared geminate transistor can timely sense smoke particles. However, smoke is not uniformly distributed, and generally, the smoke flows in a strand, when a strand of smoke enters the labyrinth, although the smoke is in the labyrinth, the strand of smoke is likely to avoid the detection area of the infrared pair tube, which causes a condition that the smoke is present in the labyrinth but cannot be detected, thereby reducing the detection accuracy and reliability of the smoke sensing device.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's not enough, it is even to provide one kind, can detect smog more timely, accurately, and then promotes the labyrinth smoke transducer of smog response accuracy and reliability.

In order to solve the technical problem, the utility model adopts the following technical scheme.

The utility model provides a labyrinth smoke transducer, smoke transducer is including bottom and upper cover, the edge of upper cover department is formed with downwardly extending's cylindric lateral wall, the bottom lid fits the lower extreme opening part of cylindric lateral wall, on cover and be formed with the inner tube, the inner tube is located the inboard of cylindric lateral wall and be equipped with the annular gap between the two, wear to be equipped with infra-red transmitter and infrared receiver on the bottom, infra-red transmitter with infrared receiver is "V" shape setting down, just infra-red transmitter's transmitting terminal with infrared receiver's receiving terminal all faces the inside cavity of inner tube, the inner tube with be formed with the bottom clearance that is used for leading-in smog between the bottom, the cylindric lateral wall is latticed.

Preferably, the inner wall of the inner cylinder is formed with a plurality of vertical triangular ridges parallel to each other, and the plurality of vertical triangular ridges are uniformly distributed along the circumferential direction of the inner cylinder.

Preferably, the upper cover on the inner side of the inner cylinder is formed with a plurality of parallel transverse triangular ribs.

Preferably, a plurality of vertical supporting blocks are formed on the bottom cover and evenly distributed along the circumferential direction of the bottom cover, the cylindrical side wall is sleeved outside the vertical supporting blocks, and the cylindrical side wall is tightly matched with the vertical supporting blocks.

Preferably, two vertical supporting blocks which are symmetrically arranged are respectively provided with an inserting column, and the inserting column penetrates through the upper cover and is tightly matched with the upper cover and the lower cover.

The utility model discloses an among the labyrinth smoke transducer the upper cover with set up the cylindric lateral wall between the bottom, have the inner tube in cylindric lateral wall inboard, based on the combination formation labyrinth structure of upper cover, bottom, inner tube and bottom, utilize simultaneously infra-red transmitter with infrared receiver's cooperation is to getting into the smog of inner tube detects, wherein, because the cylindric lateral wall is latticed, so as to pass through when smog the cylindric lateral wall gets into annular gap and during the inner tube, smog can be latticed the cylindric lateral wall is broken up, makes annular gap with smog in the inner tube is more even, even outside smog becomes a strand flow, also can be in its behind the net evenly to annular gap and the inner tube diffusion, because inside smog distributes evenly for infrared geminate transistor can be more timely, The smoke is accurately detected, and the detection accuracy and reliability of the smoke sensing device are greatly improved.

Drawings

FIG. 1 is a first perspective view of a smoke sensing device;

FIG. 2 is a second perspective view of the smoke sensing device;

figure 3 is a first exploded view of the smoke sensing device;

figure 4 is a cross-sectional view of the smoke sensing device;

FIG. 5 is a view showing the internal structure of the housing when the camera is closed;

FIG. 6 is a view showing the internal structure of the case when the camera is opened;

figure 7 is a second exploded view of the smoke sensing device;

FIG. 8 is a perspective view of the smoke sensor;

FIG. 9 is an exploded view of the smoke sensor;

FIG. 10 is a second exploded view of the smoke sensor;

FIG. 11 is a cross-sectional view of a smoke sensor;

FIG. 12 is a view showing the connection between the housing and the tray;

fig. 13 is a front view of the tray.

Detailed Description

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Example one

This embodiment proposes a labyrinth type smoke sensor, as shown in fig. 8 to 11, the smoke sensor 4 comprises a bottom cover 40 and an upper cover 41, a cylindrical side wall 42 extending downwards is formed at the edge of the upper cover 41, the bottom cover 40 covers the lower opening of the cylindrical side wall 42, an inner cylinder 43 is formed on the upper cover 41, the inner cylinder 43 is positioned at the inner side of the cylindrical side wall 42, an annular gap 44 is arranged between the inner cylinder 43 and the cylindrical side wall 42, an infrared emitter 400 and an infrared receiver 401 are arranged on the bottom cover 40 in a penetrating way, the infrared emitter 400 and the infrared receiver 401 are arranged in an inverted V shape, and the transmitting end of the infrared transmitter 400 and the receiving end of the infrared receiver 401 both face the inner cavity of the inner barrel 43, a bottom gap 45 for introducing smoke is formed between the inner cylinder 43 and the bottom cover 40, and the cylindrical side wall 42 is in a grid shape.

In the above smoke sensor, a cylindrical side wall 42 is provided between the upper cover 41 and the bottom cover 40, an inner cylinder 43 is provided inside the cylindrical side wall 42, a labyrinth structure is formed by the combination of the upper cover 41, the bottom cover 40, the inner cylinder 43 and the bottom cover 40, and smoke entering the inner cylinder 43 is detected by the cooperation of the infrared emitter 400 and the infrared receiver 401, wherein, since the cylindrical side wall 42 is in a mesh shape, when smoke enters the annular gap 44 and the inner cylinder 43 through the cylindrical side wall 42, the smoke is scattered by the cylindrical side wall 42 in the mesh shape, so that the smoke in the annular gap 44 and the inner cylinder 43 is more uniform, and even if external smoke flows in a jet, the smoke is uniformly diffused to the annular gap 44 and the inner cylinder 43 after passing through the mesh, and since the internal smoke is uniformly distributed, the infrared pair transistors can detect smoke more timely and accurately, and the detection accuracy and reliability of the smoke sensing device are greatly improved.

In order to further improve the smoke detection accuracy, in the present embodiment, a plurality of vertical triangular ribs 430 parallel to each other are formed on the inner wall of the inner cylinder 43, and the plurality of vertical triangular ribs 430 are uniformly distributed along the circumferential direction of the inner cylinder 43.

Further, a plurality of parallel lateral triangular ribs 410 are formed on the upper cover 41 inside the inner cylinder 43.

The vertical triangular ribs 430 and the horizontal triangular ribs 410 help to reduce reflection of infrared light, and prevent false detection.

In order to better realize the combination, in this embodiment, a plurality of vertical supporting blocks 402 are formed on the bottom cover 40, the vertical supporting blocks 402 are uniformly distributed along the circumferential direction of the bottom cover 40, the cylindrical side wall 42 is sleeved outside the vertical supporting blocks 402, and the cylindrical side wall 42 is tightly matched with the vertical supporting blocks 402.

In order to further strengthen the connection relationship, in this embodiment, two symmetrically disposed vertical supporting blocks 402 are respectively formed with inserting columns 403, and the inserting columns 403 penetrate through the upper cover 41 and are tightly fitted with each other.

Example two

This embodiment has proposed a smoke induction system, combines fig. 1 to fig. 13 to show, and it is including casing 1 and fixed mounting dish seat 2 on the ceiling, casing 1 with the cooperation can be dismantled to dish seat 2, casing 1 internal fixation has PCB board 3, be equipped with smoke transducer 4 on the PCB board 3, casing 1's diameter is greater than the diameter of dish seat 2, just casing 1 with the junction of dish seat 2 is formed with taper transition portion 5, taper transition portion 5 is the fretwork form, smoke alarm 4 advance the mouth orientation taper transition portion 5.

In the structure, 1 upper end of casing with the junction of disk seat 2 is formed with the taper transition portion 5 of fretwork form, taper transition portion 5 can be used to get into smog, and when indoor smog produced, smog generally can be along the ceiling diffusion, is close to because of the taper transition portion 5 of fretwork form disk seat 2, consequently, smog around the ceiling can get into casing 1 through the fretwork hole of taper transition portion 5 in, because smoke alarm 4's smoke inlet orientation taper transition portion 5 for can in time detect smog, compare among the prior art with the fretwork hole set up in the structure of casing 1 lower extreme, the utility model discloses can detect smog more in time, accurately, improve greatly the utility model discloses a detection capability has better satisfied the application requirement.

In order to introduce the smoke better, in this embodiment, the tapered transition portion 5 is provided with a plurality of parallel slotted holes 50, and the plurality of slotted holes 50 are uniformly distributed along the circumferential direction of the tapered transition portion 5.

Preferably, a surface cover 10 is fixed to an end of the housing 1 away from the tray 2.

Further, a camera 30 is arranged on the PCB 3, a window 11 is arranged on the face cover 10, and the camera 30 and the window 11 are aligned with each other.

In this embodiment, a vertical shaft 13 and a reduction motor 17 are fixed in the housing 1, a shaft sleeve 14 is sleeved on the vertical shaft 13, the shaft sleeve and the shaft sleeve are in running fit, a baffle 15 and a sector gear 16 which extend outwards are formed at the edge of the shaft sleeve 14, a driving gear 18 is fixed on an output shaft of the reduction motor 17, the driving gear 18 and teeth at the edge of the sector gear 16 are meshed with each other, and the reduction motor 17 drives the shaft sleeve 14 to rotate forward or backward by means of the transmission fit of the driving gear 18 and the sector gear 16, so as to drive the baffle 15 to be shielded between the camera 30 and the window 11, or move out from the camera 30 and the window 11.

In the structure, the shell body 1 is internally provided with the camera 30, when the smoke sensing device feeds back a smoke detection signal to the main monitoring system, a monitoring person can acquire an indoor actual condition through the camera 30, so that the fire fighting state of a monitoring area can be comprehensively known, and reasonable measures can be adopted. On this basis, the utility model discloses a drive gear 18 with sector gear 16's transmission cooperation can utilize gear motor 17 orders about baffle 15 reciprocating motion, and then the realization shelters from and opens camera 30's effect under baffle 15's guard action, can avoid oil mist, dust in the space etc. to adhere to on the camera lens of camera, only just open when needs acquire video information baffle 15 is based on above-mentioned principle, the utility model discloses can be right camera 30 plays the guard action, not only can improve equipment's life, can guarantee moreover that the camera acquires clear video information, has promoted smoke sensing device's wholeness ability greatly.

Preferably, a camera cover 31 is fixed in the housing 1, and the camera 30 is disposed in the camera cover 31.

Further, the vertical height of the camera 30 is less than or equal to the vertical height of the camera housing 31.

In this embodiment, when the baffle 15 is hidden between the camera 30 and the window 11, the baffle 15 covers the opening of the camera housing 31.

Based on the baffle 15 with the cooperation of camera overcoat 31, can with camera 30 shelter from in the baffle 15 with the enclosure space that camera overcoat 31 formed, can promote the guard action to the camera greatly from this.

Preferably, the camera housing 31 and the baffle 15 are both circular.

In order to realize the light prompt function, in this embodiment, be equipped with a plurality of LED lamp pearls 32 on the PCB board 3, a plurality of LED lamp pearls 32 are followed the marginal evenly distributed of PCB board 3.

EXAMPLE III

In practical application, smoke induction system is in order to simplify the installation step and conveniently lay work, generally can install the chassis in advance on the ceiling, then install the casing on the chassis with revolving to twist, the contact and the shell fragment of butt each other carry out electric connection in the junction on casing and chassis, but in current product, contact and shell fragment are range upon range of from top to bottom generally, forward contact, realize the elasticity butt with the help of the pressure between casing and the chassis between the two, because of the pressure between casing and the chassis is great, under long-term service condition, the shell fragment is tired very easily, lead to the elastic capacity of shell fragment to reduce, and then the condition of shell fragment and contact failure appears, the fault rate is higher, be difficult to satisfy the application demand.

To this end, the present embodiment provides an electrical connection mechanism of a smoke sensor, as shown in fig. 3, 12 and 13, the smoke sensor includes a housing 1 and a tray base 2 fixedly installed on a ceiling, a metal post 100 penetrates through a top surface of the housing 1, a post clamping device 200 is disposed on the tray base 2, the post clamping device 200 includes a first metal elastic sheet 201 and a second metal elastic sheet 202 which are arranged side by side, the first metal elastic sheet 201 and the second metal elastic sheet 202 are both vertically fixed on the tray base 2, a contact clip 203 for clamping the metal post 100 is formed between the first metal elastic sheet 201 and the second metal elastic sheet 202, a V-shaped socket 204 is formed between an end of the first metal elastic sheet 201 and an end of the second metal elastic sheet 202, and when assembling, the metal post 100 is aligned with the V-shaped socket 204, then, the housing 1 is screwed, the metal plug 100 slides into the contact clip opening 203 through the V-shaped socket 204, and the metal plug 100 is clamped by the elastic clamping force between the first metal spring piece 201 and the second metal spring piece 202, so that the metal plug 100 and the plug clamping device 200 are electrically connected.

In the structure, the top surface of casing 1 has set up the metal of vertical extension and has inserted post 100, is in simultaneously be equipped with the post clamping device 200 of inserting that contains first metal shrapnel 201 and second metal shrapnel 202 on the disk seat 2, when the metal is inserted post 100 and is slided into between first metal shrapnel 201 and the second metal shrapnel 202 under the clamping action of first metal shrapnel 201 and second metal shrapnel 202, can with post 100 in close contact is inserted to the metal, compares and adopts the contact mode of forward coincide among the prior art, the utility model discloses need not to overcome casing 1 with greater pressure between the disk seat 2 only relies on natural elasticity between first metal shrapnel 201 and the second metal shrapnel 202 presss from both sides tight metal and inserts post 100, causes the utility model discloses an elasticity centre gripping relation is more reliable, metal shrapnel is difficult tired, life is more permanent. In addition, in the assembling process, the metal plug 100 is aligned with the V-shaped socket 204, and then the housing 1 is screwed, so that the installation process is simpler, and the metal plug 100 can be matched with the first metal elastic sheet 201 and the second metal elastic sheet 202 more easily, which is beneficial to improving the installation efficiency.

As a preferable mode, two or more metal inserting columns 100 penetrate through the top surface of the housing 1, two or more inserting column clamping devices 200 are arranged on the tray 2, and the metal inserting columns 100 correspond to the inserting column clamping devices 200 one to one.

Further, an annular flange 205 is formed at the edge of the seat 2, and the post clamp device 200 is located inside the annular flange 205.

In order to enable the housing 1 to be well fastened with the tray 2, in this embodiment, an inner edge 206 is formed on the inner side of the annular flange 205, an avoiding opening 207 is formed on the inner edge 206, an inverted "L" shaped buckle 102 is formed on the top surface of the housing 1, the buckle 102 passes through the avoiding opening 207, when the housing 1 is screwed, the buckle 102 slides relative to the inner edge 206, and the buckle 102 is fastened on the inner side of the inner edge 206.

In order to further improve the elastic capability of the elastic piece, in this embodiment, the second metal elastic piece 202 is curved.

As a preferable mode, the first metal elastic sheet 201 and the second metal elastic sheet 202 are respectively fixed on the tray base 2 by screws.

In order to further improve the clamping capability between the first metal dome 201 and the second metal dome 202, in this embodiment, vertical reinforcing plates 209 are respectively disposed on the outer sides of the first metal dome 201 and the second metal dome 202, and the vertical reinforcing plates 209 and the tray base 2 are integrally formed.

In the above structure, when the first metal dome 201 and the second metal dome 202 are outwardly opened to a certain extent and contact the vertical reinforcing plate 209, the vertical reinforcing plate 209 may be utilized to provide a certain reaction force to the metal domes, so as to enhance the elastic clamping force between the two, and ensure the reliability of the electrical connection relationship.

As a preferred structure, the metal insert 100 has a long block shape.

The above is only the embodiment of the present invention, and is not intended to limit the present invention, and all modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a labyrinth smoke transducer, characterized in that, smoke transducer (4) is including bottom (40) and upper cover (41), the edge of upper cover (41) is formed with downwardly extending's cylindric lateral wall (42), bottom (40) approximately fits the lower extreme opening part of cylindric lateral wall (42), be formed with inner tube (43) on upper cover (41), inner tube (43) are located the inboard of cylindric lateral wall (42) and be equipped with annular gap (44) between the two, wear to be equipped with infrared transmitter (400) and infrared receiver (401) on bottom (40), infrared transmitter (400) with infrared receiver (401) are the setting of "V" shape of falling, just the transmitting terminal of infrared transmitter (400) with the receiving terminal of infrared receiver (401) all faces the inside cavity of inner tube (43), inner tube (43) with be formed with between bottom (40) and be used for leading-in bottom clearance (45) of smog The cylindrical side wall (42) is in a grid shape.

2. The labyrinth type smoke sensor as claimed in claim 1, wherein the inner wall of the inner cylinder (43) is formed with a plurality of vertical triangular ridges (430) parallel to each other, the plurality of vertical triangular ridges (430) being uniformly distributed along the circumferential direction of the inner cylinder (43).

3. The labyrinth smoke sensor as claimed in claim 1, wherein said upper cover (41) inside said inner cylinder (43) is formed with a plurality of mutually parallel transverse triangular ridges (410).

4. The labyrinth type smoke sensor as claimed in claim 1, wherein a plurality of vertical supporting blocks (402) are formed on the bottom cover (40), the plurality of vertical supporting blocks (402) are evenly distributed along the circumferential direction of the bottom cover (40), the cylindrical side wall (42) is sleeved outside the plurality of vertical supporting blocks (402), and the cylindrical side wall (42) is tightly matched with the vertical supporting blocks (402).

5. The labyrinth type smoke sensor as claimed in claim 4, wherein two symmetrically arranged vertical supporting blocks (402) are respectively formed with an insert column (403), and the insert columns (403) penetrate through the upper cover (41) and are tightly matched with each other.