CN216562053U

CN216562053U - Smoke sensor and fire extinguishing system

Info

Publication number: CN216562053U
Application number: CN202122651864.8U
Authority: CN
Inventors: 刘秀华; 张男; 李飞
Original assignee: Zephyr Intelligent System Shanghai Co Ltd
Current assignee: Zephyr Intelligent System Shanghai Co Ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-05-17
Anticipated expiration: 2031-11-01

Abstract

The utility model discloses a smoke sensor which comprises a shell, an emitting piece and a receiving piece. Place this smoke transducer in the battery box, the transmitter transmission detects light, because first trompil and second trompil are coaxial, and light in the first cavity can pass first trompil and get into the second cavity, then passes the second trompil and get into in the battery box. Under normal conditions the receiving can't receive light, and when the battery in the battery box thermal runaway appeared and produced smog, the scattering that enters into the detection light in the battery box through smog can get into in the receiving piece to make receiving piece can receive light, and then can receive light according to receiving piece and judge whether produce smog in the battery box, whether produce thermal runaway promptly. The smoke sensor does not need to be provided with a plurality of tortuous channels, and has the advantages of simple structure, low manufacturing difficulty and low manufacturing cost. The utility model also relates to a fire extinguishing system.

Description

Smoke sensor and fire extinguishing system

Technical Field

The utility model relates to the technical field of fire fighting equipment, in particular to a smoke sensor and a fire extinguishing system.

Background

When thermal runaway or burning appear in the lithium cell, can release a large amount of gas and smog, the temperature also can rise simultaneously, and gas can increase the pressure in the battery package, need set up pressure sensor and detect, and the temperature then detects through temperature sensor, and smog then need detect through smoke transducer.

The existing smoke sensor is generally provided with a plurality of zigzag channels, the zigzag channels are used for blocking natural light from entering to influence detection accuracy, but the structure of the smoke sensor is too complex due to the plurality of zigzag channels, and the manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a smoke sensor, a composite detector and a fire extinguishing system which are simple in structure and low in manufacturing cost.

A smoke sensor comprising:

the shell is provided with a first cavity, a second cavity, a first opening and a second opening, wherein the first opening is communicated with the first cavity and the second cavity, the second opening is communicated with the second cavity, the first opening and the second opening are positioned on two opposite sides of the second cavity along a first direction, the first opening and the second opening are coaxially arranged, and the second opening is communicated with the outside;

the emitting piece is arranged in the first cavity and used for emitting detection light; and

the receiving piece is arranged on the shell, is positioned on one side, far away from the first opening, of the second opening and is used for receiving the detection light, and the receiving piece and the second opening are arranged at an orthographic projection interval on a plane vertical to the first direction.

Place this smoke transducer in the battery box, the transmitter transmission detects light, because first trompil and second trompil are coaxial, and light in the first cavity can pass first trompil and get into the second cavity, then passes the second trompil and get into in the battery box. Under normal conditions, the receiving part can not receive light, and when the battery in the battery box thermal runaway appeared and produced smog, the detection light that enters into the battery box can get into in the receiving part through the scattering of smog to make receiving part can receive light, and then can receive light according to receiving part and judge whether produce smog in the battery box, whether produce thermal runaway promptly. The smoke sensor does not need to be provided with a plurality of tortuous channels, and has the advantages of simple structure, low manufacturing difficulty and low manufacturing cost.

In one embodiment, the housing further has a third cavity and a third opening in communication with the third cavity, the receptacle being located within the third cavity;

the shell is provided with a first surface and a second surface which are adjacent, the first surface and the second surface are arranged at an angle, the second opening is located in the first surface, and the third opening is located in the second surface.

In one embodiment, the axis of the second bore intersects the axis of the third bore.

In one embodiment, the first surface and the second surface are perpendicular to each other.

In one embodiment, the housing further has a vent for communicating the second cavity with the outside, and the vent and the second opening are respectively located on two adjacent inner walls of the second cavity.

In one embodiment, the housing includes a housing and a bottom plate, the housing has the first opening and the second opening, and the bottom plate is connected to the housing to form the first cavity and the second cavity.

In one embodiment, the smoke sensor further comprises a connector connected between the housing and the base plate.

In one embodiment, the housing further has a connection hole, and the connection member is inserted into the connection hole and connected to the bottom plate.

In one embodiment, the housing further has a reflective surface located in the first cavity for reflecting the detection light emitted by the emitting element to the first opening.

A fire extinguishing system comprises the smoke sensor.

Drawings

Fig. 1 is a schematic structural diagram of a smoke sensor according to an embodiment of the present invention;

FIG. 2 is a schematic top view of the smoke sensor of FIG. 1;

fig. 3 is a schematic cross-sectional view at a-a of the smoke sensor shown in fig. 2.

Reference numerals:

10. a housing; 31. a launch member; 32. a receiver; 11. a first cavity; 12. a second cavity; 13. a first opening; 14. a second opening; 15. a housing; 16. a base plate; 17. a ventilation opening; 18. a third cavity; 19. a third opening; 20. a first surface; 21. a second surface; 22. a reflective surface; 23. and connecting the holes.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 to 3, a smoke sensor 100 according to an embodiment of the present invention includes a housing 10, an emitting element 31, and a receiving element 32.

The housing 10 has a first cavity 11, a second cavity 12 and a first opening 13 communicating the first cavity 11 and the second cavity 12, and a second opening 14 communicating the second cavity 12, the first opening 13 and the second opening 14 are located at two opposite sides of the second cavity 12 along the first direction, the first opening 13 and the second opening 14 are coaxially disposed, and the second opening 14 is communicated with the outside.

The emitting member 31 is disposed in the first cavity 11 for emitting the detecting light.

The receiving part 32 is disposed on the housing 10, is located on a side of the second opening 14 away from the first opening 13, and is used for receiving the detection light, and the receiving part 32 and the second opening 14 are disposed at an interval of orthographic projection on a plane perpendicular to the first direction.

Wherein the first direction is the left-right direction shown in fig. 3.

When the smoke sensor is placed in a battery box, the emitting member 31 emits detection light, and since the first opening 13 and the second opening 14 are coaxial, the light in the first cavity 11 can enter the second cavity 12 through the first opening 13 and then enter the battery box through the second opening 14. Under normal conditions, receiving piece 32 can't receive light, and when the battery in the battery box thermal runaway appeared and produced smog, the scattering that enters into the detection light in the battery box can get into receiving piece 32 through smog to make receiving piece 32 can receive light, and then can receive light according to receiving piece 32 and judge whether produce smog in the battery box, whether produce thermal runaway promptly. The smoke sensor does not need to be provided with a plurality of tortuous channels, and has the advantages of simple structure, low manufacturing difficulty and low manufacturing cost.

It should be noted that, in this embodiment, the smoke sensor is disposed in the sealed battery box, and the battery box is made of an opaque material, so that natural light does not enter the battery box. Of course, the smoke sensor can also be applied to other dark closed environments.

Meanwhile, the first opening 13 and the second opening 14 are spaced and coaxially arranged along the first direction, so that the detection light emitted from the second opening 14 extends along the first direction. Meanwhile, since the receiving element 32 and the second opening 14 are disposed at an interval of orthographic projection on a plane perpendicular to the first direction, the detection light emitted from the second opening 14 in the first direction cannot be normally emitted into the receiving element 32, that is, the receiving element 32 cannot receive the light.

Further, it is understood that if the battery in the battery box is ignited, the light generated by the burning is received by the receiving member 32, but this time, it also represents that the thermal runaway of the battery box is serious.

In some embodiments, the housing 10 includes a housing 15 and a bottom plate 16, and the housing 15 is connected to the bottom plate 16 to form the first cavity 11 and the second cavity 12.

Further, the housing 15 is provided with a first mounting groove and a connecting groove, and the bottom plate 16 is connected with the housing 15 to seal the first mounting groove and the connecting groove and respectively enclose the first cavity 11 and the second cavity 12.

It will be appreciated that by disassembling the housing 10, the radiator 31 may be first installed in the first installation groove, and then the base plate 16 may be connected to the housing 15, or the radiator 31 may be first installed on the base plate 16, and then the housing 15 may be connected to the base plate 16.

Alternatively, the bottom plate 16 may be coupled to the tank to form the second chamber 12, and in other embodiments, the second chamber 12 may be directly formed, i.e., directly formed in the housing 15. However, for ease of processing, the second chamber 12 is preferably formed by the enclosure of the base plate 16 with the housing 15.

In practical application, the housing 15 is provided with a first opening 13 and a second opening 14, the first opening 13 is used for communicating the first mounting groove and the connecting groove, and the second opening 14 is communicated with the connecting groove.

Specifically, the first mounting groove and the connecting groove are sequentially arranged along a first direction, the first opening 13 is connected between the first mounting groove and the connecting groove, and the second opening 14 is located at one side of the connecting groove away from the first mounting groove.

In some embodiments, the housing 10 further defines a vent 17 for communicating the second cavity 12 with the outside. In practical applications, the ventilation opening 17 and the second opening 14 are respectively located on two adjacent inner walls in the second cavity 12.

It should be noted that, the emitting element 31 is disposed in the first cavity 11, but most of the detection light emitted from the emitting element 31 cannot directly pass through the first opening 13, and generally smoke needs to enter the first cavity 11, so that the detection light emitted from the emitting element 31 is directly scattered in the first cavity 11 and then exits from the first opening 13. And the shell 10 is provided with a ventilation port 17 communicated with the second cavity 12, so that the speed of the smoke entering the first cavity 11 can be increased, the detection speed is increased, and the detection efficiency is improved.

In some embodiments, the housing 10 further has a third cavity 18 and a third opening 19 in communication with the third cavity 18, the receiving element 32 is located in the third cavity 18, and the light exiting the second opening 14 can be scattered by the smoke and can enter the third cavity 18 through the third opening 19 to be received by the receiving element 32.

It can be confirmed that the third opening 19 further prevents the receiver 32 from receiving light under normal conditions, and thus the accuracy of detection is ensured.

In some embodiments, the housing 10 has a first surface 20 and a second surface 21 adjacent to each other, the first surface 20 is disposed at an angle to the second surface 21, the second opening 14 is located on the first surface 20, and the third opening 19 is located on the second surface 21. In this way, light emitted from the second opening 14 is prevented from directly entering the third cavity 18 through the third opening 19, and scattered light entering the third cavity 18 through the third opening 19 is conveniently received by the receiving member 32.

In some embodiments, the axis of the second bore 14 intersects the axis of the third bore 19. In practical applications, the first surface 20 and the second surface 21 are perpendicular to each other, that is, the axis of the second opening 14 and the axis of the third opening 19 are perpendicular to each other. In this manner, light scattered in further detail enters the third cavity 18 through the third opening 19.

It can be determined in combination with the above embodiments that the third opening 19 is also opened on the housing 15, and the housing 15 further has a second mounting groove communicated with the third opening 19, and when the housing 15 is connected with the bottom plate 16, the bottom plate 16 closes the second mounting groove to form the third cavity 18.

Meanwhile, when the installation is carried out, the receiving part 32 can be firstly installed in the second installation groove, or the receiving part 32 is firstly installed on the bottom plate 16, and then the bottom plate 16 is connected with the shell 15, so that the installation of the receiving part 32 can be completed, and the installation is more convenient.

In some embodiments, the housing 10 further has a reflective surface 22, and the reflective surface 22 is located in the first cavity 11 and is used for reflecting the detection light emitted from the emitting element 31 to the first opening 13, so that the detection light emitted from the emitting element 31 of the reflective surface 22 can be reflected by the reflective surface 22 to form a reflected light and exit through the first opening 13, thereby increasing the light exiting from the first opening 13.

Of course, when the reflective surface 22 is not provided, the smoke can enter the first cavity 11 to increase the light emitted from the first opening 13.

In some embodiments, the smoke sensor further comprises a connector connected between the housing 15 and the base plate 16 to secure the housing 15 and the base plate 16 together. In practical application, the housing 15 further has a connection hole 23, and the connection member is inserted through the connection hole 23 and connected to the bottom plate 16. In particular, the connecting member is a screw.

A fire suppression system comprising the smoke sensor of the above embodiments.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A smoke sensor, comprising:

2. The smoke sensor of claim 1 wherein said housing further has a third cavity and a third opening in communication with said third cavity, said receiver being located within said third cavity;

3. The smoke sensor of claim 2, wherein an axis of said second aperture intersects an axis of said third aperture.

4. The smoke sensor of claim 3, wherein said first surface and said second surface are perpendicular to each other.

5. The smoke sensor according to claim 1, wherein the housing further has a vent for communicating the second cavity with the outside, and the vent and the second opening are respectively located on two adjacent inner walls of the second cavity.

6. The smoke sensor of claim 1, wherein said housing comprises a shell having said first opening and said second opening and a floor connected to said shell to enclose said first cavity and said second cavity.

7. The smoke sensor of claim 6, further comprising a connector connected between said housing and said base plate.

8. The smoke sensor as claimed in claim 7, wherein said housing further defines a connecting hole, and said connecting member is inserted through said connecting hole and connected to said base plate.

9. The smoke sensor of claim 1, wherein said housing further has a reflective surface located within said first cavity for reflecting said detection light emitted by said emitter member to said first opening.

10. A fire suppression system comprising a smoke sensor according to any one of claims 1 to 9.