Smoke chamber for fire detection of new energy lithium battery box and fire detection device

Abstract

The utility model discloses a smoke chamber for fire detection of a new energy lithium battery box and a fire detection device, and the smoke chamber comprises a housing which comprises a housing top shielding part and a housing bottom installation part; the L-shaped shielding parts are annularly and uniformly arranged between the shell top shielding part and the shell bottom mounting part, a smoke inlet channel is formed between every two adjacent L-shaped shielding parts, each L-shaped shielding part comprises a mounting guide block and a light shielding block which are integrally arranged, the mounting guide blocks are fixed to the shell top shielding part and the shell bottom mounting part, and the light shielding blocks are fixed to the shell top shielding part and the shell bottom mounting part. The shading blocks of the adjacent L-shaped shading parts are arranged in a stacked mode, each shading block comprises a first end for installing the guide block and a second end opposite to the first end, and the edge of the second end of each shading block is at least flush with the edge of the first end of the adjacent L-shaped shading part. According to the utility model, external light can be shielded by the light shielding block and cannot enter the smoke chamber, so that a better light shielding effect is formed, and smoke is less blocked when entering the smoke chamber, so that the smoke entering effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of fire detection, in particular to a smoke chamber for fire detection of a new energy lithium battery box and a fire detection device. Background Art

[0002] Smoke detectors are one of the most commonly used detectors in fire detection and alarm systems. Common ones include ion smoke detectors and photoelectric smoke detectors. Photoelectric smoke detectors detect fires by using the absorption and scattering of light by fire smoke. Therefore, photoelectric smoke detectors are mainly composed of two parts: a light-emitting element and a light-receiving element. In order to eliminate the interference of ambient light on the light-receiving element, the light-emitting element and the light-receiving element are installed in a smoke chamber. Smoke can enter the smoke chamber, but light cannot. The existing smoke chamber's light-shielding and smoke-intake structure is usually straight or T-shaped. The straight structure has a poor light-shielding effect, while the T-shaped structure has a poor smoke-intake effect. Therefore, there is still room for improvement. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a smoke chamber and a fire detection device for a new energy lithium battery box fire detection, which have the advantages of improving the overall shading effect and smoke intake effect.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] According to a first aspect of an embodiment of the present disclosure, a smoke chamber for fire detection of a new energy lithium battery box is provided, comprising:

[0006] A shell, the shell comprising a shell top shielding portion and a shell bottom mounting portion;

[0007] A plurality of L-shaped shielding parts are evenly arranged in a ring shape between the shell top shielding part and the shell bottom mounting part, and a smoke inlet channel is formed between adjacent L-shaped shielding parts. The L-shaped shielding part includes an integrally arranged installation guide block and a light shielding block. The installation guide block is fixed to the shell top shielding part and the shell bottom mounting part. The light shielding blocks of adjacent L-shaped shielding parts are stacked. The light shielding block includes a first end connected to the installation guide block and a second end arranged opposite to the first end, and the edge of the second end of the light shielding block is at least aligned with the edge of the first end of the adjacent light shielding block.

[0008] To implement the above technical solution, during use, smoke enters from the smoke inlet channel and is detected by the detection element arranged in the smoke chamber. Since the shading blocks of adjacent L-shaped shielding parts are stacked and aligned at the edges, external light will be blocked by the shading blocks and cannot enter the smoke chamber, thereby forming a better shading effect. The smoke inlet channel formed between adjacent L-shaped shielding parts does not have too many curved parts, so there is less obstruction when smoke enters, which makes the smoke intake effect better.

[0009] In some exemplary embodiments, the installation guide block is disposed obliquely, and the inner side of the light shielding block is disposed perpendicularly to the installation guide block.

[0010] To implement the above technical solution, when external light enters from between adjacent installation guide blocks, it will be blocked after hitting the shading block. However, due to the vertical setting, the reflected light will basically return along the original path, and there will be enough gaps between adjacent shading blocks without affecting the entry of smoke.

[0011] In some exemplary embodiments, the light shielding block is in a wedge shape.

[0012] To implement the above technical solution, the wedge-shaped setting can meet the shading requirements while allowing a larger gap between adjacent shading blocks, making it more conducive to the entry of smoke.

[0013] In some exemplary embodiments, snap-fitting claws are symmetrically arranged on the outer side of the shell bottom mounting portion, and snap-fitting steps are arranged at the lower part of the snap-fitting claws.

[0014] By implementing the above technical solution, the symmetrically arranged snap-fit ​​claws facilitate snap-fit ​​connection with the detection circuit board, making the installation process faster and more convenient.

[0015] In some exemplary embodiments, the bottom of the snap-fit ​​step is arranged in an arc shape.

[0016] To implement the above technical solution, the arc-shaped setting makes it easier for the snap-fit ​​step to be pressed into the detection circuit board.

[0017] In some exemplary embodiments, a reinforcing rib is provided on the inner side of the snap-fitting claw.

[0018] By implementing the above technical solution, the structural strength of the snap-fitting claw can be improved by reinforcing the ribs, thereby improving the stability of the snap-fit ​​installation.

[0019] According to a second aspect of an embodiment of the present disclosure, a fire detection device is provided, comprising a smoke chamber as described in the first aspect.

[0020] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0021] The utility model embodiment provides a smoke chamber and a fire detection device for a new energy lithium battery box fire detection, wherein the smoke chamber for a new energy lithium battery box fire detection comprises: an outer shell, wherein the outer shell comprises a shell top shielding portion and a shell bottom mounting portion; a plurality of L-shaped shielding portions which are evenly arranged in an annular shape between the shell top shielding portion and the shell bottom mounting portion, a smoke inlet channel is formed between adjacent L-shaped shielding portions, the L-shaped shielding portion comprises an integrally arranged installation guide block and a shading block, the installation guide block is fixed to the shell top shielding portion and the shell bottom mounting portion, the shading blocks of adjacent L-shaped shielding portions are stacked, the shading block comprises a first end connected to the installation guide block and a second end arranged opposite to the first end, and the edge of the second end of the shading block is at least aligned with the edge of the first end of the adjacent shading block. During use, smoke enters from the smoke inlet channel and is detected by the detection element arranged in the smoke chamber. Since the shading blocks of adjacent L-shaped shielding parts are stacked and aligned at the edges, external light will be blocked by the shading blocks and cannot enter the smoke chamber, thereby forming a better shading effect. The smoke inlet channel formed between adjacent L-shaped shielding parts does not have too many curved parts, so there is less obstruction when smoke enters, which makes the smoke intake effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0023] Figure 2 It is a structural schematic diagram of another viewing angle of an embodiment of the utility model.

[0024] Figure 3 It is a bottom view of an embodiment of the utility model.

[0025] Figure 4 It is the front view of the embodiment of the utility model.

[0026] The numbers and letters in the figure represent the corresponding component names:

[0027] 10. Shell; 11. Shell top shielding part; 12. Shell bottom mounting part; 20. L-shaped shielding part; 21. Smoke inlet channel; 22. Installation guide block; 23. Shading block; 231. First end; 232. Second end; 30. Snap-on claw; 31. Snap-on step; 32. Reinforcing rib. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figures 1 to 4 As shown, the first aspect of the embodiment of the utility model provides a smoke chamber for fire detection of a new energy lithium battery box, comprising: an outer shell 10, the outer shell 10 comprising a shell top shielding portion 11 and a shell bottom mounting portion 12; a plurality of L-shaped shielding portions 20 that are evenly arranged in an annular shape between the shell top shielding portion 11 and the shell bottom mounting portion 12, a smoke inlet channel 21 is formed between adjacent L-shaped shielding portions 20, the L-shaped shielding portion 20 comprises an integrally arranged installation guide block 22 and a shading block 23, the installation guide block 22 is fixed to the shell top shielding portion 11 and the shell bottom mounting portion 12, the shading blocks 23 of adjacent L-shaped shielding portions 20 are stacked, the shading blocks 23 comprise a first end 231 connected to the installation guide block 22 and a second end 232 arranged opposite to the first end 231, and the edge of the second end 232 of the shading block 23 is at least aligned with the edge of the first end 231 of the adjacent shading block 23.

[0030] The outer shell 10 and the L-shaped shielding portion 20 can be processed and formed by an integral molding method, wherein the installation guide block 22 is tilted, and the inner side of the shading block 23 is perpendicular to the installation guide block 22. When external light enters from between adjacent installation guide blocks 22, it will be blocked after shining on the shading block 23. Due to the vertical setting, the reflected light will basically return along the original path, and there will be enough gaps between adjacent shading blocks 23 without affecting the entry of smoke.

[0031] Furthermore, the shading blocks 23 are wedge-shaped. The wedge-shaped setting can satisfy the shading requirement while allowing a larger gap between adjacent shading blocks 23, making it easier for smoke to enter.

[0032] Furthermore, the outer side of the shell bottom mounting portion 12 is symmetrically provided with snap-fitting claws 30, the lower part of the snap-fitting claws 30 is provided with snap-fitting steps 31, the outer side of the snap-fitting claws 30 is arc-shaped, the snap-fitting claws 30 extend downward and have a certain elastic deformation ability; the symmetrically arranged snap-fitting claws 30 facilitate snap-fitting connection with the detection circuit board, and the installation process is quicker and more convenient.

[0033] In this embodiment, the bottom of the snap-fit ​​step 31 is arranged in an arc shape, and the snap-fit ​​step 31 is wedge-shaped as a whole and forms an introduction slope. The arc shape makes it easier for the snap-fit ​​step 31 to be pressed into the detection circuit board; and a reinforcing rib 32 is provided on the inner side of the snap-fitting claw 30, and the reinforcing rib 32 is triangular in shape as a whole. The reinforcing rib 32 can improve the structural strength of the snap-fitting claw 30 and improve the stability of the snap-fit ​​installation.

[0034] During use, smoke enters from the smoke inlet channel 21 and is detected by the detection element arranged in the smoke chamber. Since the shading blocks 23 of adjacent L-shaped shielding parts 20 are stacked and aligned at the edges, external light will be blocked by the shading blocks 23 and cannot enter the smoke chamber, thereby forming a better shading effect. The smoke inlet channel 21 formed between adjacent L-shaped shielding parts 20 does not have too many curved parts, so there is less obstruction when the smoke enters, which makes the smoke intake effect better.

[0035] A second aspect of an embodiment of the utility model provides a fire detection device, comprising the smoke chamber as described in the first aspect, wherein the smoke chamber is snap-connected to a detection circuit board, and the detection circuit board is a PCB board.

[0036] Take a specific product as an example:

[0037] The overall appearance of the smoke chamber is circular, which fits the 1.6mm thick PCB board. There are two snap-fitting claws 30 on both sides. An L-shaped shielding part is used between the outer shell 10 and the inner chamber as a light-shielding smoke inlet structure. The center distance between the two snap-fitting claws 30 that are fixed to the smoke chamber is 28mm. The inner cavity diameter of the L-shaped shielding part is 11.8mm. After the smoke chamber is tightly snapped with the PCB board, the distance from the PCB board fitting surface to the highest point of the smoke chamber outer shell 10 is 11.4mm.

[0038] The installation and use process is as follows: snap the two snap claws 30 on both sides of the smoke chamber into the corresponding holes on the PCB board. After hearing a snap sound, check whether the two snap claws 30 are completely and tightly snapped together with the PCB board. Hold the PCB board and the smoke chamber with your left and right hands respectively. After applying force to both sides, observe with the naked eye whether there is any relative displacement between the smoke chamber and the PCB board. After confirming that there is no relative displacement between the smoke chamber and the PCB board that is visible to the naked eye, the installation of the smoke chamber is completed. Then, the light-shielding property and smoke concentration of the smoke chamber are tested through software.

[0039] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several modifications and improvements can be made, which are equivalent modifications and improvements made to the above embodiments based on the essential technology of the utility model, and all of them belong to the protection scope of the utility model.

Claims

1. A smoke chamber for fire detection of a new energy lithium battery box, characterized in that: include: A shell, the shell comprising a shell top shielding portion and a shell bottom mounting portion; A plurality of L-shaped shielding parts are evenly arranged in a ring shape between the shell top shielding part and the shell bottom mounting part, and a smoke inlet channel is formed between adjacent L-shaped shielding parts. The L-shaped shielding part includes an integrally arranged installation guide block and a light shielding block. The installation guide block is fixed to the shell top shielding part and the shell bottom mounting part. The light shielding blocks of adjacent L-shaped shielding parts are stacked. The light shielding block includes a first end connected to the installation guide block and a second end arranged opposite to the first end, and the edge of the second end of the light shielding block is at least aligned with the edge of the first end of the adjacent light shielding block.

2. The smoke chamber for fire detection of new energy lithium battery box according to claim 1 is characterized in that: The installation guide block is arranged obliquely, and the inner side of the light shielding block is arranged perpendicularly to the installation guide block.

3. The smoke chamber for fire detection of new energy lithium battery box according to claim 2 is characterized in that: The light shielding block is in a wedge shape.

4. The smoke chamber for fire detection of new energy lithium battery box according to claim 1 is characterized in that: The outer side of the shell bottom mounting portion is symmetrically provided with snap-fitting claws, and the lower part of the snap-fitting claws is provided with a snap-fitting step.

5. The smoke chamber for fire detection of new energy lithium battery box according to claim 4 is characterized in that: The bottom of the buckle step is arranged in an arc shape.

6. The smoke chamber for fire detection of a new energy lithium battery box according to claim 4 or 5, characterized in that: A reinforcing rib is arranged on the inner side of the clamping claw.

7. A fire detection device, characterized in that: Comprising a smoke chamber as described in any one of claims 1-6.

Images