An inductive smoke detector

Abstract

The utility model belongs to the fire safety technical field, concretely relates to a kind of inductive smoke detector, including detector body, the top of the detector body is detachably connected with protective cover, the protective cover is narrow in upper and wide in lower conical structure, its outer wall is evenly spaced apart and is provided with several flow guide grooves in circumferential direction, and the top end opening width of each flow guide groove is greater than the bottom end opening width, the top axial center of the protective cover is fixedly connected with the adapter pipe, the inner side wall edge of the protective cover is fixedly connected with the water cutting ring, the water cutting ring is continuous wave shape and surrounds structure;The utility model is through the height of adapter pipe, and reserve safety interval between protective cover and ceiling, avoid the direct paste of protective cover and ceiling and block up moisture invasion, and cooperate with the isolation effect of protective cover to ceiling water seepage and the drainage structure of flow guide groove, prevent water seepage erosion detector body, guarantee the safe operation of internal electronic device, to eliminate the equipment failure hidden danger caused by water seepage.

Description

Technical Field

[0001] This utility model belongs to the field of fire safety technology, specifically relating to an inductive smoke detector. Background Technology

[0002] Smoke detectors are devices used to monitor fire safety. They are mainly divided into two types: ionization and photoelectric. Ionization detectors use the radioactive isotope americium-241 to ionize the air and form an electric current. When smoke enters, it disrupts the ionization balance and triggers an alarm. Photoelectric detectors, on the other hand, use the principle of infrared beam scattering. When smoke particles enter the detection chamber, the scattered light is received by a photosensitive element, which then triggers an alarm. By monitoring the smoke concentration, they can achieve early fire warnings and are widely used in various places.

[0003] Current smoke detectors are installed and fixed on the ceiling. However, the ceiling is affected by factors such as construction quality, building aging, and climate, and water seepage and leakage often occur. If the smoke detector encounters ceiling leakage, whether it is intermittent or sudden, its internal electronic components are easily damaged, which can lead to a series of malfunctions such as short circuit leakage, sensitivity deviation, and abnormal signal. Utility Model Content

[0004] The purpose of this utility model is to provide a smoke detector that, by adjusting the height of the connecting pipe, leaves a safe distance between the protective cover and the ceiling, preventing the protective cover from directly contacting the ceiling and blocking moisture intrusion. In addition, the protective cover isolates water seepage from the ceiling and the drainage structure of the guide channel prevents water seepage from corroding the detector body, ensuring the safe operation of internal electronic components and eliminating potential equipment failures caused by water seepage.

[0005] The specific technical solution adopted by this utility model is as follows: A smoke detector includes a detector body, a protective cover detachably connected to the top of the detector body, the protective cover having a conical structure that is narrower at the top and wider at the bottom, a plurality of flow guide grooves evenly spaced along the circumference of its outer wall, and the top opening width of each flow guide groove being greater than the bottom opening width, a connecting pipe fixedly connected to the top axis of the protective cover, and a water-cutting ring fixedly connected to the inner sidewall edge of the protective cover, the water-cutting ring having a continuous wave-shaped surrounding structure.

[0006] The inner wall of the connecting pipe is provided with internal threads, and it can be detachably connected to the pre-set mounting hole in the ceiling through a fastening bolt.

[0007] The bottom of the protective cover is coaxially fixedly connected to a connecting ring, which is detachably threadedly connected to the detector body through a threaded groove on the outer wall.

[0008] The top of the connecting ring is provided with several ventilation openings evenly spaced along the circumference, and a protective net is fixedly connected to each ventilation opening.

[0009] When the detector body and the connecting ring are in a connected state, the gap between the detector body and the protective cover forms a ventilation chamber.

[0010] The angle between the generatrix of the tapered structure of the protective cover and the horizontal plane is 30°-60°.

[0011] The mesh size of the protective net is no larger than 1mm × 1mm.

[0012] The technical effects achieved by this utility model are as follows: by adjusting the height of the connecting pipe, a safe distance is reserved between the protective cover and the ceiling, which avoids the protective cover from being directly attached to the ceiling and blocks the invasion of moisture. In addition, the protective cover isolates water seepage from the ceiling and the drainage structure of the guide channel prevents water seepage from corroding the detector body, ensuring the safe operation of the internal electronic components and eliminating the potential for equipment failure caused by water seepage. Attached Figure Description

[0013] Figure 1 This is a top view of the appearance of the inductive smoke detector provided in an embodiment of this utility model; Figure 2 This is a top view showing the structural separation of the smoke detector provided in an embodiment of this utility model.

[0014] The attached diagram lists the components represented by each number as follows: 1. Detector body; 101. Protective cover; 102. Flow guide channel; 103. Connecting pipe; 104. Fastening bolt; 105. Water cutting ring; 106. Connecting ring; 107. Ventilation port; 108. Protective net; 109. Threaded groove. Detailed Implementation

[0015] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0016] like Figures 1-2As shown, a smoke detector includes a detector body 1. A protective cover 101 is detachably connected to the top of the detector body 1. The protective cover 101 has a tapered structure that is narrower at the top and wider at the bottom. Several guide grooves 102 are evenly spaced along the circumference of its outer wall, and the top opening width of each guide groove 102 is greater than the bottom opening width. The angle between the generatrix of the tapered structure of the protective cover 101 and the horizontal plane is 30°-60°. A connecting pipe 103 is axially fixedly connected to the top of the protective cover 101. The inner wall of the connecting pipe 103 has internal threads and is detachably connected to a pre-set mounting hole in the ceiling via a fastening bolt 104. The inner... A water-cutting ring 105 is fixedly connected to the edge of the side wall. The water-cutting ring 105 has a continuous wave-shaped surrounding structure. A connecting ring 106 is coaxially fixedly connected to the bottom of the protective cover 101. The connecting ring 106 is detachably threadedly connected to the detector body 1 through a threaded groove 109 opened on the outer wall. When the detector body 1 and the connecting ring 106 are connected, the gap between the detector body 1 and the protective cover 101 forms a ventilation chamber. Several ventilation openings 107 are evenly spaced along the circumference on the top of the connecting ring 106. A protective net 108 is fixedly connected in each ventilation opening 107. The mesh size of the protective net 108 is no larger than 1mm×1mm.

[0017] According to the above structure, an installation hole is opened at a predetermined position on the ceiling. After the fastening bolt 104 is inserted into the installation hole, the connecting tube 103 of the protective cover 101 is aligned with the fastening bolt 104 and screwed in. The top of the detector body 1 is provided with an annular groove corresponding to the connecting ring 106, which can be threadedly connected to the threaded groove 109 on the outer wall of the connecting ring 106. After the two are connected and fixed, a ventilation chamber will be formed inside the connecting ring 106. External air is introduced through the ventilation port 107 to ensure the heat dissipation effect of the detector body 1. At the same time, the protective net 108 can block mosquitoes and impurities. Furthermore, the protective cover 101 is located above the detector body 1. The height of the connecting pipe 103 ensures that there is a gap between the protective cover 101 and the ceiling, preventing them from sticking together and blocking moisture from corroding the protective cover 101. If the ceiling leaks water, the protective cover 101 forms an isolation barrier above the detector body 1, allowing water droplets to slide down its conical structure. The top opening width of the guide channel 102 is greater than the bottom opening width, and its wide inlet makes it easier to collect water droplets. The gradually narrowing channel can accelerate the water flow out. The wavy structure of the water-cutting ring 105 can form a shearing force through its valley difference, making it easier to cut off the adhesion between the water film and the protective cover 101, and accelerating the dripping and discharge of residual liquid on the wall.

[0018] The working principle of this utility model is as follows: an installation hole is opened at a preset position on the ceiling, and after the fastening bolt 104 is placed into the hole, the connecting pipe 103 of the protective cover 101 is aligned with the fastening bolt 104 and screwed to fix it. The top of the detector body 1 is provided with an annular groove that is compatible with the connecting ring 106. The two are stably connected by the threaded engagement with the threaded groove 109 on the outer wall of the connecting ring 106. Furthermore, after the connection is completed, the gap between the two creates a ventilation chamber inside the connecting ring 106, and the ventilation opening 107 on it can introduce external air to ensure that the detector body 1 maintains effective heat dissipation; the protective net 108 built into the ventilation opening 107 can block mosquitoes and impurities from entering. At this time, the protective cover 101 is located above the detector body 1. The height design of the connecting tube 103 keeps the protective cover 101 and the ceiling at an appropriate gap to avoid sticking together and to block the moisture from corroding the protective cover 101. Furthermore, when water seepage occurs in the ceiling, the protective cover 101 acts as an isolation barrier, guiding the water downwards along its conical structure; the guide channel 102 adopts a design that is wide at the top and narrow at the bottom, which facilitates the collection of water droplets and accelerates drainage through the gradually narrowing channel; the wave-shaped surrounding structure of the water-cutting ring 105 uses its valley difference to generate shear force, which can cut off the adhesion between the water film and the protective cover 101, promoting the rapid dripping and discharge of residual liquid on the wall.

[0019] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An ionization smoke detector comprising a detector body (1), characterized in that: The detector body (1) is detachably connected to a protective cover (101) on its top. The protective cover (101) has a tapered structure that is narrow at the top and wide at the bottom. Several guide grooves (102) are evenly spaced along the circumference of its outer wall. The top opening width of each guide groove (102) is greater than the bottom opening width. A connecting pipe (103) is fixedly connected to the top axis of the protective cover (101). A water-cutting ring (105) is fixedly connected to the inner side wall edge of the protective cover (101). The water-cutting ring (105) has a continuous wave-shaped surrounding structure. The angle between the generatrix of the tapered structure of the protective cover (101) and the horizontal plane is 30°-60°.

2. The induced smoke detector according to claim 1, characterized in that: The inner wall of the connecting pipe (103) is provided with internal threads and can be detachably connected to the mounting hole of the ceiling through a fastening bolt (104).

3. The induction smoke detector according to claim 1, characterized in that: The bottom of the protective cover (101) is coaxially fixedly connected to a connecting ring (106), and the connecting ring (106) is detachably threadedly connected to the detector body (1) through a threaded groove (109) opened on the outer wall.

4. An induced smoke detector according to claim 3, characterised in that: The top of the connecting ring (106) is provided with a number of ventilation openings (107) evenly spaced along the circumference, and a protective net (108) is fixedly connected inside each ventilation opening (107).

5. The induced smoke detector according to claim 3, characterized in that: When the detector body (1) and the connecting ring (106) are in a connected state, the gap between the detector body (1) and the protective cover (101) forms a ventilation chamber.

6. The induction smoke detector according to claim 4, characterized in that: The mesh size of the protective net (108) is no greater than 1mm × 1mm.

Images