CN109166268B

CN109166268B - A advance cigarette maze and smoke detector for smoke detector

Info

Publication number: CN109166268B
Application number: CN201811222438.9A
Authority: CN
Inventors: 姜文军
Original assignee: Zhejiang Jugan Internet Of Things Technology Co ltd
Current assignee: Zhejiang Jugan Internet Of Things Technology Co ltd
Priority date: 2018-10-19
Filing date: 2018-10-19
Publication date: 2020-10-27
Anticipated expiration: 2038-10-19
Also published as: CN109166268A

Abstract

The invention discloses a smoke inlet labyrinth for a smoke detector and the smoke detector, which comprise a base and an upper cover, wherein a cavity for detecting smoke concentration is arranged between the base and the upper cover, a plurality of baffles are arranged around the cavity, the baffles are uniformly distributed along the periphery of the cavity in the circumferential direction, and a smoke inlet channel for external gas to enter the cavity is formed between two adjacent baffles; including a plurality of dysmorphism boards in the baffle, be equipped with the flange that is used for changing the cigarette effect of advancing of corresponding cigarette passageway on the dysmorphism board, the flange extends to cavity inside. The invention can make the smoke in the air more easily enter or flow out of the detector or the labyrinth, and the structure of the baffles in the labyrinth makes the smoke inlet effect of the smoke inlet labyrinth more uniform.

Description

A advance cigarette maze and smoke detector for smoke detector

Technical Field

The invention relates to the field of smoke detection, in particular to a smoke inlet labyrinth for a smoke detector and smoke detection.

Background

Along with the rapid development of economy, smoke alarms and independent smoke alarms are applied more and more; however, the labyrinth used in the existing smoke alarm has more or less defects: 1. the direction consistency is poor, the smoke inlet ratio of the same concentration in each direction approaches the limit of 1.6, or the ratio of the same alarm value of a plurality of alarms in the same direction is larger. 2. The smoke is difficult to enter and exit, and the like: when smoke appears, the smoke is difficult to enter the maze due to structural problems, and the needed alarm is not realized, or the smoke is difficult to be eliminated after the smoke enters the maze, so that the smoke alarm is difficult to recover after the alarm is given.

Disclosure of Invention

The invention aims to provide a smoke inlet labyrinth for a smoke detector and smoke detection, smoke in air can enter or flow out of the detector or the labyrinth more easily, and the structure of arranging a plurality of baffles in the labyrinth enables the smoke inlet effect of the smoke inlet labyrinth to be more uniform.

In order to realize the purpose of the invention, the invention adopts the following technical scheme: a smoke inlet labyrinth for a smoke detector comprises a base and an upper cover, wherein a cavity for detecting smoke concentration is arranged between the base and the upper cover, a plurality of baffles are arranged around the cavity, the baffles are uniformly distributed along the peripheral circumference of the cavity, and a smoke inlet channel for external gas to enter the cavity is formed between two adjacent baffles; including a plurality of dysmorphism boards in the baffle, be equipped with the flange that is used for changing the cigarette effect of advancing of corresponding cigarette passageway on the dysmorphism board, the flange extends to cavity inside.

Preferably, one end of the baffle plate extending to the cavity is provided with a first branch and a second branch, and the first branch and the second branch on the adjacent baffle plate form a C-shaped smoke inlet channel.

Preferably, the angle and depth at which the tabs on each profiled sheet extend into the cavity are different.

Preferably, the smoke ventilator further comprises a filter screen which is covered outside each smoke inlet channel formed by the baffle plates.

Preferably, the outer side of the base is provided with a detection probe for detecting the smoke concentration, the base is provided with a window convenient for detection of the detection probe, and the window is positioned in the middle of the cavity.

Preferably, sixteen baffle plates are provided, and four profiled plates are arranged in the baffle plates, and the four profiled plates are distributed at non-uniform intervals.

Preferably, the filter screen is a metal mesh.

In order to realize the purpose of the invention, the invention also adopts the following technical scheme: a smoke detector comprises a smoke inlet labyrinth, an upper shell, a lower shell and a circuit board used for controlling the operation of the smoke detector, wherein the circuit board and the smoke inlet labyrinth are positioned in the upper shell and the lower shell.

Preferably, the smoke detector further comprises a battery for supplying power to the smoke detector, and the smoke detector is only supplied with power by the battery.

Compared with the prior art, the smoke inlet labyrinth for the smoke detector and the smoke detection have the advantages that:

firstly, by adopting the smoke inlet labyrinth and the smoke detector provided with the smoke inlet labyrinth, the baffle structure in the smoke inlet labyrinth enables smoke to enter the monitoring cavity from all angles around the cavity, so that the smoke inlet effect is more balanced, and the anti-interference effect of the smoke detector is improved.

Two, baffle circumference sets up in the cavity periphery, guarantees that the smog around the detector can both enter into the detection cavity, and even interval sets up can low other get into the cavity more easily, guarantees the circulation of gas in the cavity, solves the problem that gas is detained in the detector.

Drawings

FIG. 1 is a schematic structural diagram of a smoke inlet labyrinth for a smoke detector according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of the baffle of the present embodiment;

FIG. 3 is a schematic sectional view of the baffle plate in the present embodiment;

FIG. 4 is a schematic diagram of a smoke detector according to an embodiment of the present invention.

Reference numerals: 1. a base; 11. a window; 2. a baffle plate; 21. a first bifurcation; 22. a second branch; 3. a shaped plate; 31. a convex plate; 4. an upper cover; 5. a cavity; 6. a smoke inlet channel; 7. filtering with a screen; 8, detecting a probe; 10. a smoke inlet labyrinth; 20. an upper shell; 30. a lower case; 40. a circuit board.

Detailed Description

Embodiments of the present invention are described in more detail below with reference to the accompanying drawings. The examples are provided so that this disclosure will be thorough and will fully convey the scope of the protection to those skilled in the art. Numerous specific details are set forth such as examples of specific locations, devices, etc. to provide a thorough understanding of embodiments of the present invention. It will be apparent to those skilled in the art that the embodiments may be embodied in many different forms without necessarily having to apply these specific details, and that neither should be construed as limiting the scope of the invention. In addition, elements and features depicted in one drawing or one embodiment of the invention may be combined with elements and features depicted in one or more other drawings or embodiments. In certain embodiments, well-known processes, structures and techniques have not been described in detail in the drawings and specification for the sake of clarity.

As shown in fig. 4, which is an exploded view of the overall structure of the smoke detector of the present invention, the smoke detector includes an upper case 20, a smoke inlet labyrinth 10, a detection probe disposed below a base 1 of the smoke inlet labyrinth 10, a circuit board 40, and a lower case 30. The smoke detector is typically mounted on the ceiling of the space in which smoke detection is desired through a lower housing 30, and the upper housing 20 is provided with openings to facilitate air entry. Air from the surrounding environment enters the detector through openings in the housing and is now in the cavity 5 in the smoke maze 10 for detecting smoke concentrations. The space which can be detected by the detection probe on the base 1 is communicated with the cavity 5. The detection probe is connected to the circuit board 40, and analyzes and converts the detected signal through the chip and the components on the circuit board 40, and finally carries out fire alarm or continuous detection.

As shown in fig. 1, which is a schematic structural diagram of a smoke inlet labyrinth 10 in this embodiment, the smoke inlet labyrinth 10 includes a base 1 and an upper cover 4, a cavity 5 for detecting smoke concentration is formed between the upper cover 4 and the base 1, after gas enters a detector from an upper shell 20 of the detector, the gas passes through a filter screen 7, the filter screen 7 blocks insects or large particles carried in the air outside the smoke inlet labyrinth 10, and the insects or the large particles are prevented from blocking a smoke inlet channel 6 after entering the smoke inlet labyrinth, so as to affect detection of the detector. Sixteen baffle plates 2 are arranged around the cavity 5, and the sixteen baffle plates 2 are uniformly distributed along the periphery of the cavity 5. As shown in fig. 2 and 3, a smoke inlet passage 6 for the outside air to enter the cavity 5 is formed between each two adjacent baffles 2, and smoke enters the cavity 5 from the smoke inlet passage 6. In this embodiment, sixteen baffles 2 all set up on upper cover 4, only need during installation or dismantlement to mention upper cover 4 and just can take labyrinth structure, be convenient for inspection and cleanness. In order to facilitate installation and use of each detector, the smoke detector in the embodiment is provided with the battery, the smoke detector is powered only by the power supply, and the smoke detector is provided with the wireless communication module, so that the trouble of connecting a data line is avoided.

The basic shape of each baffle 2 is the same and is a fork type, one end of the baffle 2 for entering smoke is contacted with the filter screen 7, and the other end is divided into two parts to form two first branches 21 and two second branches 22. Wherein, the length of the first branch 21 is less than that of the second branch 22, and the second branch 22 extends into the cavity 5, and one end extending into the cavity 5 inclines to one side. In this way, the second branches 22 form a half-enclosure, and the first branches 21 of the adjacent baffles 2 extend in the direction of the corresponding second branches 22 and extend into the half-enclosure of the second branches 22, so as to form the C-shaped smoke inlet channel 6.

As shown in fig. 2 and 3, in order to make the smoke inlet effect more uniform, a plurality of special-shaped plates 3 are contained in sixteen baffle plates 2, the convex plates 31 on the special-shaped plates 3 are arranged on the second branches 22, and the baffle plates 2 and the special-shaped plates 3 are in a form of one-to-two and two-to-two, similar to a fork type. In this embodiment, there are four profiled sheets 3, and the angle and depth of extension of the protruding plate 31 provided on each profiled sheet 3 into the space are different, and the four profiled sheets 3 are distributed at specific locations that are not evenly distributed around the cavity 5. Like this, the cigarette passageway 6 that advances that forms between different baffle 2 or the dysmorphism board 3 distributes in different angles to the installation supervision of cooperation test probe can make smoke alarm performance more excellent. In the present embodiment, the detecting probe is a pair of opposing lamp holders with a light emitting tube and a receiving tube having an included angle of about 135 degrees, and the filter screen 7 is a metal filter screen 7.

Gas enters the cavity 5 to be detected through entering the cigarette passageway 6 in the testing environment, advances to be equipped with on the base 1 of cigarette maze 10 to be used for detecting smog concentration and be used for the window 11 of gaseous outflow, for the convenience airflow circulation and guarantee that the airflow circulation is stable, and the window 11 is seted up in the position that cavity 5 middle part corresponds, and test probe can carry out real-time detection through window 11 to smog concentration.

Claims

1. A advances cigarette maze for smoke detector, includes base (1) and upper cover (4), its characterized in that: a cavity (5) for detecting smoke concentration is arranged between the base (1) and the upper cover (4), a plurality of baffles (2) are arranged around the cavity (5), the baffles (2) are uniformly distributed along the periphery of the cavity (5) in the circumferential direction, and a smoke inlet channel (6) for allowing outside air to enter the cavity (5) is formed between two adjacent baffles (2); the baffle (2) comprises a plurality of special-shaped plates (3), the special-shaped plates (3) are provided with convex plates (31) used for changing the smoke inlet effect of the corresponding smoke inlet channel (6), and the convex plates (31) extend towards the inside of the cavity (5);

one end of the baffle (2) extending to the cavity (5) is provided with a first branch (21) and a second branch (22), and the first branch (21) and the second branch (22) on the adjacent baffle (2) form a C-shaped smoke inlet channel (6);

the angle and the depth of the extension of the convex plate (31) on each special-shaped plate (3) to the inside of the cavity (5) are different;

the device also comprises a filter screen (7), wherein the filter screen (7) covers the outer side of each smoke inlet channel (6) formed by the baffle (2);

a detection probe for detecting the smoke concentration is arranged on the outer side of the base (1), a window (11) convenient for detection of the detection probe is arranged on the base (1), and the window (11) is located at a position corresponding to the middle of the cavity (5) and the bottom plate;

sixteen baffle plates (2) are provided, four special-shaped plates (3) in the baffle plates (2) are arranged, and the four special-shaped plates (3) are distributed at non-uniform intervals;

the filter screen (7) is a metal screen;

the smoke inlet labyrinth (10), the upper shell (20), the lower shell (30) and a circuit board (40) used for controlling the operation of the smoke detector, wherein the circuit board (40) and the smoke inlet labyrinth (10) are positioned in the upper shell (20) and the lower shell (30);

the smoke detector is powered by the battery only;

the smoke detector is arranged on a ceiling of a space needing smoke detection through a lower shell (30), and an opening facilitating air to enter is formed in an upper shell (20);

the detection probe is connected to the circuit board (40), and the detected signals are analyzed and converted through chips and components on the circuit board (40);

sixteen baffles (2) are all arranged on the upper cover (4);

the length of the first branch (21) is smaller than that of the second branch (22), the second branch (22) extends into the cavity (5), and one end extending into the cavity (5) inclines to one side;

the convex plate (31) on the special-shaped plate (3) is arranged on the second branch (22), and the baffle plate (2) and the special-shaped plate (3) are divided into two parts, namely a fork shape.