Smoke detector
By setting a separate dustproof piece in the inner cavity of the smoke detector, the problem of poor dustproofing effect of traditional smoke detectors is solved, the possibility of dust entering the detector body is reduced, and the reliability and service life of the equipment are improved.
Patent Information
- Application Number
- CN202421796466.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The dustproof parts of traditional smoke detectors have large openings, resulting in poor dustproofing effects, which makes the detector body easily damaged.
By providing a dustproof member in the inner cavity of the housing, the inner cavity of the housing is divided into a first cavity and a second cavity, the detector body and the probe are respectively arranged in the second cavity and the first cavity, so that the opening size of the dustproof member can be set to be smaller, thereby reducing the amount of dust entering the second cavity.
It effectively reduces the probability of damage to the detector body and improves the reliability and service life of the equipment.
Smart Images
Figure CN222825969U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of smoke detection, and in particular relates to a smoke detector. Background Art
[0002] Smoke detectors, also known as smoke fire detectors, smoke sensors, etc., mainly monitor the concentration of smoke in the air to issue fire alarms in time, thereby achieving early warning of fire. Smoke detectors are a vital component of fire protection systems and security systems.
[0003] Traditional smoke detectors generally include a shell, a detector body, and a probe. The detector body and the probe are both located in the inner cavity of the shell, and the probe is usually located on the detector body. The shell is provided with an air inlet, and the air inlet is provided with a dustproof piece. During use, smoke passes through the opening on the dustproof piece and enters the inner cavity of the shell, and is then discharged from the air outlet after being detected by the probe. In this design, in order to ensure the amount of smoke reaching the probe, the size of the opening of the dustproof piece is usually large, which results in poor dustproof effect of the dustproof piece, and the detector body is more sensitive to dust, making the detector body easily damaged. Utility Model Content
[0004] The purpose of the embodiments of the present application is to provide a smoke detector that can solve the problem in the related art that the detector body is easily damaged.
[0005] The present application provides a smoke detector, comprising:
[0006] A shell and a dustproof member, wherein the shell is provided with an air outlet and an air inlet, the dustproof member is provided in the inner cavity of the shell and divides the inner cavity of the shell into a first cavity and a second cavity along the flow direction of the gas, and the dustproof member has an opening for gas to pass through, and the first cavity and the second cavity are respectively connected to the air inlet and the air outlet;
[0007] A detector body and a probe, wherein the detector body and the probe are communicatively connected, and the detector body and the probe are respectively arranged in the second cavity and the first cavity.
[0008] In an embodiment of the present application, the dustproof part is arranged in the inner cavity of the shell, and divides the inner cavity of the shell into a first cavity and a second cavity along the gas flow direction. The detector body and the probe are respectively arranged in the second cavity and the first cavity. In this arrangement, there is no correlation between the size of the opening of the dustproof part and the amount of smoke entering the inner cavity of the shell. In this way, the opening size of the dustproof part can be set smaller, thereby reducing the amount of dust entering the second cavity, and further reducing the probability of damage to the detector body. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1This is a schematic diagram of the structure of the smoke detector disclosed in the embodiment of the present application;
[0010] Figure 2 It is a structural schematic diagram of the first cylinder disclosed in the embodiment of the present application;
[0011] Figure 3 A schematic diagram of the structure of the dustproof part disclosed in the embodiment of the present application;
[0012] Figure 4 It is a schematic diagram of the structure of the second cylinder disclosed in the embodiment of the present application;
[0013] Figure 5 This is a schematic diagram of the arrangement of the air outlet and the air guide member disclosed in the embodiment of the present application.
[0014] Description of reference numerals:
[0015] 110-first cylinder, 111-first sub-cylinder, 112-second sub-cylinder, 113-third sub-cylinder, 120-second cylinder, 121-first sub-cylinder, 1211-guide groove, 1212-limiting portion, 122-second sub-cylinder, 1221-first annular flange, 130-third cylinder, 131-air outlet, 132-partitioning portion, 133-second annular flange, 134-third annular flange, 140-blocking member, 141-air inlet hole, 150-installing cylinder, 160-screw, 160a-first screw, 160b-second screw, 170-connecting structure;
[0016] 200-dustproof part, 210-annular frame, 220-dust screen, 230-slider;
[0017] 300-dust screen;
[0018] 400-air guide;
[0019] 500-probe;
[0020] 600-ring seal;
[0021] 700-threaded connector. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.
[0023] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.
[0024] The smoke detector provided in the embodiment of the present application is described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.
[0025] Please refer to Figures 1 to 5 As shown, an embodiment of the present application provides a smoke detector, including: a shell, a dustproof part 200, a detector body and a probe 500.
[0026] Specifically, the shell is provided with an air outlet 131 and an air inlet, and the dustproof part 200 is provided in the inner cavity of the shell, and divides the inner cavity of the shell into a first cavity and a second cavity along the flow direction of the gas, and the dustproof part 200 has an opening for gas to pass through, and the gas is, for example, smoke generated by a fire, and the first cavity and the second cavity are respectively connected to the air inlet and the air outlet 131.
[0027] The detector body and the probe 500 are connected in communication, and the detector body and the probe 500 are respectively arranged in the second cavity and the first cavity. In other words, the detector body is arranged in the second cavity, and the probe 500 is arranged in the first cavity. The detector body and the probe 500 are connected by a wire, for example, to achieve communication connection between the two.
[0028] In an embodiment of the present application, the dustproof member 200 is arranged in the inner cavity of the shell, and divides the inner cavity of the shell into a first cavity and a second cavity along the gas flow direction. The detector body and the probe 500 are respectively arranged in the second cavity and the first cavity. In this way, there is no correlation between the size of the opening of the dustproof member 200 and the amount of smoke entering the inner cavity of the shell. In this way, the opening size of the dustproof member 200 can be set smaller, thereby reducing the amount of dust entering the second cavity, and further reducing the probability of damage to the detector body.
[0029] During specific use, the probe 500 detects the gas entering the second cavity and transmits the detected information to the detector body. The detector body controls the operation of other components based on the information. For example, the detector body is communicated with the alarm, and the detector body controls the alarm to sound or shut down based on the information detected by the probe 500.
[0030] In another embodiment, reference Figure 1 , Figure 2 as well as Figure 4 As shown, the housing includes: a first barrel 110 and a second barrel 120, and the first end of the first barrel 110 is detachably connected to the third end of the second barrel 120 and communicates with each other. The dustproof member 200 is detachably disposed in the inner cavity of the first barrel 110, and can enter and exit the inner cavity of the first barrel 110 from the port at the first end, or the dustproof member 200 is detachably disposed in the inner cavity of the second barrel 120, and can enter and exit the inner cavity of the second barrel 120 from the port at the third end. The first cavity includes at least part of the inner cavity of the first barrel 110, and the second cavity includes at least part of the inner cavity of the second barrel 120.
[0031] It is understandable that the areas corresponding to the first cavity and the second cavity are different depending on the location of the dustproof member 200. Specifically, when the dustproof member 200 is located at the first end of the first barrel 110, the first cavity includes, for example, the first part of the inner cavity of the first barrel 110, and the second cavity includes, for example, the entire inner cavity of the second barrel 120 and the second part of the inner cavity of the first barrel 110, and the first part, the second part, and the part occupied by the dustproof member 200 constitute, for example, the entire inner cavity of the first barrel 110. When the dustproof member 200 is located at the third end of the second barrel 120, the first cavity includes, for example, the entire inner cavity of the first barrel 110 and the third part of the second barrel 120, and the second cavity includes, for example, the fourth part of the inner cavity of the second barrel 120, and the third part, the fourth part, and the part occupied by the dustproof member 200 constitute, for example, the entire inner cavity of the second barrel 120.
[0032] In this embodiment, the first end of the first cylinder 110 and the third end of the second cylinder 120 are detachably connected, so that the first end of the first cylinder 110 and the third end of the second cylinder 120 can be separated from each other. When the first end and the third end are separated from each other, the port of the first end and the port of the second end are exposed, thereby making it easier to disassemble and maintain the dustproof part 200.
[0033] In other optional embodiments, the first barrel 110 and the second barrel 120 may also be an integral structure, or the first barrel 110 and the second barrel 120 may be connected in a non-detachable manner such as welding or gluing.
[0034] In a further embodiment, the first end and the third end are arranged mutually, and the outer one of the first end and the third end is provided with a limiting portion 1212, and the inner one and the limiting portion 1212 are respectively limitedly cooperated with the first surface and the second surface of the dustproof part 200, and the first surface and the second surface are two opposite surfaces of the dustproof part 200 in the first direction, and the first direction is parallel to the axis of the first cylinder 110 and / or the axis of the second cylinder 120.
[0035] Specifically, when the axis of the first cylinder 110 is not parallel to the axis of the second cylinder 120, and the dustproof piece 200 is disposed in the inner cavity of the first cylinder 110, the first direction is, for example, parallel to the axis of the first cylinder 110; when the axis of the first cylinder 110 is not parallel to the axis of the second cylinder 120, and the dustproof piece 200 is disposed in the inner cavity of the second cylinder 120, the first direction is, for example, parallel to the axis of the second cylinder 120; when the axis of the first cylinder 110 is parallel to the axis of the second cylinder 120, the first direction is, for example, parallel to both the axis of the first cylinder 110 and the axis of the second cylinder 120.
[0036] Specifically, refer to Figure 2 As shown, in the case where the first end is sleeved on the outside of the third end, the first end is provided with a limiting portion 1212, and the third end and the limiting portion 1212 are respectively limited with the first surface and the second surface, so that the dustproof member 200 is clamped between the end surface of the third end and the limiting portion 1212, so that the dustproof member 200 can be detachably arranged in the inner cavity of the first cylinder 110. In the case where the third end is sleeved on the outside of the first end, the third end is provided with a limiting portion 1212, and the first end and the limiting portion 1212 are respectively limited with the first surface and the second surface, so that the dustproof member 200 is clamped between the end surface of the first end and the limiting portion 1212, so that the dustproof member 200 can be detachably arranged in the inner cavity of the second cylinder 120.
[0037] During specific use, when the first cylinder 110 and the second cylinder 120 are separated from each other, the first end or the third end is separated from the dustproof piece 200. At this time, the limit of the dustproof piece 200 by the first end or the third end is released, and the user can take out the dustproof piece 200 from the inner cavity of the first cylinder 110 from the port of the first end, or the user can take out the dustproof piece 200 from the inner cavity of the second cylinder 120 from the port of the third end.
[0038] In this embodiment, the dustproof member 200 is clamped between the end surface of the third end and the limiting portion 1212 or between the end surface of the first end and the limiting portion 1212. In this way, the first end and the third end participate in positioning the dustproof member 200. In this way, there is no need to add other limiting structures to limit the movement of the dustproof member 200, thereby making the structure of the smoke detector simpler.
[0039] In other optional embodiments, the first end and the third end may not exist in a mutually nested relationship. In this case, the end face of the first end and the end face of the third end, for example, fit together, and a limit piece is, for example, detachably provided in the inner cavity of the first cylinder 110 or the inner cavity of the second cylinder 120, and the limit piece and the limit portion 1212 are respectively limited and cooperated with the first surface and the second surface of the above-mentioned dustproof piece 200.
[0040] In a further embodiment, reference Figure 2 As shown, the inner wall of the first cylinder 110 or the inner wall of the second cylinder 120 is provided with a guide groove 1211, the length direction of the guide groove 1211 coincides with the first direction, the dustproof part 200 is provided with a slider 230, the slider 230 is arranged in the guide groove 1211, and slides with the guide groove 1211 in the length direction of the guide groove 1211. One of the two opposite ends of the guide groove 1211 in its own length direction extends to the end face of the first end of the first cylinder 110 or the end face of the third end of the second cylinder 120, and the other is provided with a limiting portion 1212.
[0041] Specifically, when the guide groove 1211 is provided at the first end of the first cylinder 110, one end of the guide groove 1211 extends to the end surface of the first end of the first cylinder 110, and the other end is provided with a limiting portion 1212. When the guide groove 1211 is provided at the third end of the second cylinder 120, one end of the guide groove 1211 extends to the end surface of the third end of the second cylinder 120, and the other end is provided with a limiting portion 1212.
[0042] In the solution adopted in this embodiment, during the process of disassembling and assembling the dustproof part 200, the guide groove 1211 can guide the movement of the slider 230, thereby guiding the movement of the dustproof part 200, thereby making the movement of the dustproof part 200 smoother.
[0043] During specific use, the slider 230 can enter and exit the guide groove 1211 from the end of the guide groove 1211 opposite to the end surface of the first end or the end of the guide groove 1211 opposite to the end surface of the third end.
[0044] In other optional embodiments, the inner wall of the first cylinder 110 or the inner wall of the second cylinder 120 may not be provided with the above-mentioned guide groove 1211, and the dustproof part 200 may not be provided with the above-mentioned sliding block 230.
[0045] In an optional embodiment, reference Figure 3 As shown, the dustproof member 200 includes, for example, an annular frame 210 and a dustproof net 220. The dustproof net 220 covers the inner space of the annular frame 210, and the circumferential edge of the dustproof net 220 is connected to the annular frame 210. The mesh of the dustproof net 220 is, for example, the opening described above. The annular frame 210 has good strength, so that the dustproof member 200 has good stability.
[0046] For further reference, Figure 3 As shown, the slider 230 is, for example, arranged on the annular skeleton 210, and the slider 230 is, for example, located on the first surface of the dustproof part 200, and the slider 230 is limitedly matched with the first end of the first cylinder 110 or the slider 230 is limitedly matched with the third end of the second cylinder 120, thereby realizing the limited matching of the first surface of the dustproof part 200 with the first end of the first cylinder 110 and the third end of the second cylinder 120.
[0047] In a further embodiment, the first end and the third end are threadedly connected. In this way, the length of the first end and the third end being mutually sleeved can be adjusted by rotating the first cylinder 110 and / or the second cylinder 120, so that the first distance between the stopper 1212 and the end surface of the first end or the second distance between the stopper 1212 and the end surface of the third end can be adjusted, and the first distance or the second distance is adapted to the thickness of the dustproof member 200, and thus the scheme adopted in this embodiment can be adapted to dustproof members 200 of different thicknesses, so as to be replaceable to meet the needs of users.
[0048] In other optional embodiments, the first end and the third end may also be connected by screws.
[0049] In another embodiment, reference Figure 4 As shown, the smoke detector further includes a mounting tube 150, which is disposed in the first cavity and connected to the housing, and the probe 500 is detachably disposed in the inner cavity of the mounting tube 150. In this arrangement, the user can replace the probe 500, thereby extending the service life of the smoke detector.
[0050] In a further embodiment, the probe 500 is detachably disposed in the inner cavity of the mounting tube 150 , for example, by being magnetically attracted to the inner wall of the mounting tube 150 .
[0051] In other optional embodiments, reference Figure 4 As shown, the smoke detector may further include at least two screws 160, each screw 160 passes through the side wall of the mounting tube 150 and is threadedly connected to the mounting tube 150, and the at least two screws 160 include a first screw 160a and a second screw 160b, and the first screw 160a and the second screw 160b are respectively against the two opposite sides of the probe 500, so that the probe 500 is sandwiched between the first screw 160a and the second screw 160b, thereby realizing that the probe 500 is detachably arranged in the inner cavity of the mounting tube 150. Compared with the above-mentioned magnetic attraction solution, the solution adopted in this embodiment is not interfered by the external magnetic field, so that the connection between the probe 500 and the mounting tube 150 is more reliable.
[0052] During specific use, by rotating at least one of the first screw 160a and the second screw 160b, the distance between the first screw 160a and the second screw 160b is increased, and the probe 500 can be taken out from between the first screw 160a and the second screw 160b. Conversely, by rotating at least one of the first screw 160a and the second screw 160b, the distance between the first screw 160a and the second screw 160b is adjusted to match the size of the probe 500, and the probe 500 can be clamped between the first screw 160a and the second screw 160b.
[0053] As a specific implementation method, refer to Figure 4 As shown, the mounting cylinder 150 is connected to the inner wall of the housing, for example, via a connecting structure 170 , and the connecting structure 170 is, for example, a connecting plate.
[0054] In another embodiment, reference Figure 1 As shown, the smoke detector further includes a dust net 300, which is a sheet-like structure, is located outside the housing, and is magnetically coupled with the housing, and covers at least part of the air outlet 131. In this way, the dust net 300 can be removed from the housing or installed on the housing without the aid of tools, so that the dust net 300 can be disassembled and assembled more conveniently and quickly.
[0055] In other optional embodiments, the dustproof net 300 may also be connected to the housing by screws.
[0056] In a further embodiment, reference Figure 5 As shown, there are at least two air outlets 131, each of which is arranged at intervals along the circumference of the shell, and at least two air outlets 131 are covered by the same dustproof net 300. The portion of the shell corresponding to the portion between two adjacent air outlets 131 is a partition 132, and at least one partition 132 is magnetically matched with the corresponding dustproof net 300. It can be understood that "corresponding" here means that there is a relative relationship in position. Specifically, each partition 132 corresponding to the dustproof net 300 is located on the side of the dustproof net 300 facing the inner cavity of the shell.
[0057] It should be noted that, in this embodiment, all the air outlets 131 may be covered by the same dustproof net 300 , or at least two dustproof nets 300 may be provided so that each dustproof net 300 covers a different air outlet 131 .
[0058] In the solution adopted in this embodiment, at least two air outlets 131 are covered by the same dustproof net 300 , so that the number of dustproof nets 300 can be reduced, thereby making it easier to disassemble and assemble the dustproof nets 300 .
[0059] In other optional embodiments, the air outlets 131 and the dustproof nets 300 may also be in a one-to-one correspondence, and each air outlet 131 is covered by the corresponding dustproof net 300 .
[0060] In another embodiment, reference Figure 5 As shown, the smoke detector further includes an air guide 400, and the number of air outlets 131 is at least two, each air outlet 131 is arranged at intervals along the circumference of the shell, and the air guide 400 is arranged in the inner cavity of the shell, and each air outlet 131 is opposite to the air guide 400. The air guide 400 is a cone-shaped structure, and along the flow direction of the gas, the area of the cross section of the air guide 400 perpendicular to the axial direction of the shell gradually increases. In this way, when the gas flows through the air guide 400, the air guide 400 can disperse the gas, and under the guidance of the air guide 400, the gas can reach each air outlet 131 more smoothly.
[0061] During specific use, when the gas reaches the position where the air guide 400 is located, due to the obstruction of the air guide 400 , the gas disperses in the circumferential direction of the air guide 400 and flows along the surface of the air guide 400 to each air outlet 131 .
[0062] In other optional embodiments, the smoke detector may not be provided with the air guide member 400 .
[0063] As a specific implementation method, refer to Figure 5 As shown, the shell also includes a third cylinder 130, one end of the third cylinder 130 is closed, and the other end of the third cylinder 130 is connected to the fourth end of the second cylinder 120, the fourth end and the third end mentioned above are the two ends of the second cylinder 120 opposite to each other in the direction of its own axis, and the air outlet 131 is, for example, arranged along the circumference of the third cylinder 130.
[0064] For further reference, Figure 2 , Figure 4 as well as Figure 5 As shown, the end of the third barrel 130 facing the fourth end of the second barrel 120 is provided with a second annular flange 133, and the second annular flange 133 protrudes from the outer side wall of the third barrel 130, for example, along the radial direction of the third barrel 130. The fourth end of the second barrel 120 is provided with a first annular flange 1221, and the first annular flange 1221 protrudes from the outer side wall of the second barrel 120, for example, along the radial direction of the second barrel 120. The first annular flange 1221 is, for example, fitted with the second annular flange 133 and detachably connected to achieve detachable connection between the third barrel 130 and the second barrel 120. Due to the presence of the first annular flange 1221 and the second annular flange 133, the contact area between the second barrel 120 and the third barrel 130 is increased, so that the connection between the second barrel 120 and the third barrel 130 is more reliable.
[0065] Further, the third cylinder 130 is provided with a third annular flange 134 at one end away from the fourth end of the second cylinder 120, for example, and the third annular flange 134 is used to fit with a building and to be detachably connected to the building. As described above, due to the presence of the third annular flange 134, the contact area between the third cylinder 130 and the building is increased, so that the connection between the third cylinder 130 and the building is more reliable.
[0066] As a specific implementation, the third annular flange 134 is detachably connected to the building, for example, via a threaded connector 700 .
[0067] Further, refer to Figure 4 As shown, the first cylinder 110, for example, includes a first sub-cylinder body 111, a second sub-cylinder body 112 and a third sub-cylinder body 113 which are sequentially connected along the flow direction of the gas. The first sub-cylinder body 111, the second sub-cylinder body 112 and the third sub-cylinder body 113 are, for example, all cylindrical structures, and the mounting cylinder 150 and the probe 500 mentioned above are, for example, both arranged in the inner cavity of the second sub-cylinder body 112 and the inner cavity of the third sub-cylinder body 113. In order to accommodate the mounting cylinder 150 and the probe 500, the inner diameter of the second sub-cylinder body 112 and the inner diameter of the third sub-cylinder body 113 are, for example, larger than the inner diameter of the first sub-cylinder body 111.
[0068] refer to Figure 2 As shown, the second cylinder 120, for example, includes a first sub-cylinder 121 and a second sub-cylinder 122 that are sequentially connected along the flow direction of the gas. The first sub-cylinder 121 and the second sub-cylinder 122 are, for example, both cylindrical structures. The first sub-cylinder 121 is, for example, sleeved on the outside of the third sub-cylinder 113 and connected to the third sub-cylinder 113. The guide groove 1211 described above is, for example, provided on the inner wall of the first sub-cylinder 121, and the outer diameter of the first sub-cylinder 121 is, for example, equal to the outer diameter of the second sub-cylinder 112. The dustproof member 200 described above is, for example, provided on the first sub-cylinder 121, and the slider 230 described above is, for example, abutted against one end of the third sub-cylinder 113 away from the second sub-cylinder 112.
[0069] It should be noted that in the embodiments of the present application, "tube" refers to a structure having an inner cavity, and both ends opposite to each other in the direction of its own axis are provided with ports for connecting the inner cavity with the outside world. In other words, the first cylinder 110, the second cylinder 120, the third cylinder 130, the installation cylinder 150, the first sub-cylinder 121, the second sub-cylinder 122, the first sub-cylinder 111, the second sub-cylinder 112 and the third sub-cylinder 113 described above all have inner cavities, and both ends opposite to each other in the direction of their own axis are provided with ports for connecting the inner cavity with the outside world.
[0070] In another embodiment, the smoke detector further includes an air extraction member, which is disposed in the second cavity. The air extraction member is used to drive gas circulation so that external gas enters the inner cavity of the shell from the air inlet and the gas in the inner cavity of the shell is discharged from the air outlet 131. The air extraction member is, for example, a fan. Due to the existence of the dustproof member 200, less dust enters the second cavity. Therefore, by arranging the air extraction member in the second cavity, the amount of dust that the air extraction member contacts can be reduced, thereby extending the service life of the air extraction member.
[0071] In other optional embodiments, the air extraction member may also be disposed in the first cavity.
[0072] In another embodiment, reference Figure 3 As shown, the smoke detector further includes an annular seal 600, which is sleeved on the outside of the dustproof member 200 and disposed between the dustproof member 200 and the inner wall of the housing to seal the gap between the two. The annular seal 600 is, for example, a rubber ring. In this way, the gap between the dustproof member 200 and the inner wall of the housing is sealed, so that dust cannot enter the second cavity from the gap between the dustproof member 200 and the inner wall of the housing, thereby further reducing the amount of dust entering the second cavity.
[0073] In other optional embodiments, the smoke detector may not include the annular seal 600 .
[0074] In an optional embodiment, the annular seal 600 is, for example, sleeved on the outside of the annular skeleton 210 described above.
[0075] In another embodiment, reference Figure 1 As shown, the smoke detector further includes a stopper 140, which covers the air inlet. The stopper 140 is provided with at least two air inlet holes 141, each of which is used to connect the first cavity with the outside, and each of the air inlet holes 141 is, for example, evenly arranged on the stopper 140, and the stopper 140 is, for example, a baffle. The area of the air inlet hole 141 on the first cross section is greater than the area of the opening on the second cross section. The first cross section is a cross section of the air inlet hole 141 in a direction perpendicular to its own axis, and the second cross section is a cross section of the opening in a direction perpendicular to its own axis. Specifically, the first cross section and the second cross section are, for example, both circular, and the diameter of the first cross section is, for example, greater than the diameter of the second cross section.
[0076] In the solution adopted in this embodiment, the blocking member 140 can block at least part of the impurities from entering the first cavity. In this way, the amount of impurities entering the first cavity is reduced, thereby reducing the interference of the probe 500 with the external impurities.
[0077] In other optional embodiments, the smoke detector may not include the blocking member 140 .
[0078] As a specific implementation method, refer to Figure 1 and Figure 4 As shown, the port at one end of the first sub-cylinder body 111 away from the second sub-cylinder body 112 is, for example, an air inlet.
[0079] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.
Claims
1. A smoke detector, characterized in that: include: A shell and a dustproof member (200), the shell being provided with an air outlet (131) and an air inlet, the dustproof member (200) being arranged in the inner cavity of the shell and dividing the inner cavity of the shell into a first cavity and a second cavity along the flow direction of gas, and the dustproof member (200) having an opening through which gas can pass, the first cavity and the second cavity being respectively connected to the air inlet and the air outlet (131); A detector body and a probe (500), wherein the detector body and the probe (500) are communicatively connected, and the detector body and the probe (500) are respectively arranged in the second cavity and the first cavity.
2. The smoke detector according to claim 1, characterized in that: The shell comprises: a first cylinder (110) and a second cylinder (120), wherein the first end of the first cylinder (110) and the third end of the second cylinder (120) are detachably connected and communicated with each other; the dustproof member (200) is detachably arranged in the inner cavity of the first cylinder (110), and can enter and exit the inner cavity of the first cylinder (110) from the port of the first end, or the dustproof member (200) is detachably arranged in the inner cavity of the second cylinder (120), and can enter and exit the inner cavity of the second cylinder (120) from the port of the third end, the first cavity includes at least part of the inner cavity of the first cylinder (110), and the second cavity includes at least part of the inner cavity of the second cylinder (120).
3. The smoke detector according to claim 2, characterized in that: The first end and the third end are arranged in a mutually sleeved manner, and the outer one of the first end and the third end is provided with a limiting portion (1212), and the inner one and the limiting portion (1212) are respectively limitedly matched with the first surface and the second surface of the dustproof part (200), and the first surface and the second surface are two opposite surfaces of the dustproof part (200) in a first direction, and the first direction is parallel to the axis of the first cylinder (110) and / or the axis of the second cylinder (120), and the first end and the third end are threadedly connected.
4. The smoke detector according to claim 3, characterized in that: A guide groove (1211) is provided on the inner side wall of the first cylinder (110) or the inner side wall of the second cylinder (120), and the length direction of the guide groove (1211) coincides with the first direction. The dustproof part (200) is provided with a slider (230), and the slider (230) is arranged in the guide groove (1211) and slidably cooperates with the guide groove (1211) in the length direction of the guide groove (1211). One of the two opposite ends of the guide groove (1211) in its own length direction extends to the end surface of the first end of the first cylinder (110) or the end surface of the third end of the second cylinder (120), and the other is provided with the limiting portion (1212).
5. The smoke detector according to claim 1, characterized in that: The smoke detector further comprises a mounting tube (150) and at least two screw rods (160); the mounting tube (150) is arranged in the first cavity and connected to the shell; the probe (500) is arranged in the inner cavity of the mounting tube (150); each of the screw rods (160) passes through the side wall of the mounting tube (150) and is threadedly connected to the mounting tube (150); the at least two screw rods (160) comprise a first screw rod (160a) and a second screw rod (160b); the first screw rod (160a) and the second screw rod (160b) are respectively abutted against two opposite sides of the probe (500) so that the probe (500) is sandwiched between the first screw rod (160a) and the second screw rod (160b).
6. The smoke detector according to claim 1, characterized in that: The smoke detector further comprises a dustproof net (300), the dustproof net (300) being a sheet structure, the dustproof net (300) being located outside the shell and being magnetically matched with the shell, and the dustproof net (300) covering the air outlet (131), the number of the air outlets (131) being at least two, each of the air outlets (131) being arranged at intervals along the circumference of the shell, at least two of the air outlets (131) being covered by the same dustproof net (300), the portion of the shell corresponding to the portion between two adjacent air outlets (131) being a partition (132), and at least one of the partitions (132) being magnetically matched with the corresponding dustproof net (300).
7. The smoke detector according to claim 1, characterized in that: The smoke detector further comprises an air guide member (400), the number of the air outlets (131) is at least two, each of the air outlets (131) is arranged at intervals along the circumference of the shell, the air guide member (400) is arranged in the inner cavity of the shell, each of the air outlets (131) is opposite to the air guide member (400), the air guide member (400) is a conical structure, and along the flow direction of the gas, the cross-sectional area of the air guide member (400) in the direction perpendicular to the axis of the shell gradually increases.
8. The smoke detector according to claim 1, characterized in that: The smoke detector also includes an exhaust component, which is arranged in the second cavity and is used to drive gas circulation so that external gas enters the inner cavity of the shell from the air inlet and the gas in the inner cavity of the shell is discharged from the air outlet (131).
9. The smoke detector according to claim 1, characterized in that: The smoke detector further comprises an annular sealing member (600), wherein the annular sealing member (600) is sleeved on the outside of the dustproof member (200) and is arranged between the dustproof member (200) and the inner wall of the housing to seal the gap between the two.
10. The smoke detector according to claim 1, characterized in that: The smoke detector further comprises a blocking member (140), wherein the blocking member (140) covers the air inlet, and the blocking member (140) is provided with at least two air inlet holes (141), each of the air inlet holes (141) is used to connect the first cavity with the outside, and the area of the air inlet hole (141) on a first cross section is larger than the area of the opening on a second cross section, and the first cross section is a cross section of the air inlet hole (141) in a direction perpendicular to its own axis, and the second cross section is a cross section of the opening in a direction perpendicular to its own axis.