Smoke sensor with good heat resistance

Abstract

This utility model discloses a smoke sensor with good heat resistance, including a mounting base. A sensor body is mounted on the upper end of the mounting base. The sensor body includes a mounting shell, and the outer surface of the mounting shell is provided with a high-temperature resistant base layer. This utility model sequentially arranges a high-temperature resistant base layer, a heat insulation layer, and a protective layer on the outer surface of the mounting shell. The polyimide layer in the high-temperature resistant base layer has excellent high-temperature resistance and can maintain structural stability in high-temperature environments. The ABS material layer enhances the toughness and strength of the base layer. The heat insulation layer effectively blocks external heat from transferring to the interior, preventing damage to internal components due to high temperatures. The polyphenylene sulfide layer and PC material layer of the protective layer not only further improve the overall heat resistance but also resist chemical corrosion in high-temperature environments. This multi-layered structural design allows the smoke sensor to operate stably for extended periods in high-temperature environments, significantly improving its applicability in high-temperature scenarios.

Description

Technical Field

[0001] This utility model relates to the field of smoke sensor technology, specifically a smoke sensor with good heat resistance. Background Technology

[0002] In environments such as industrial production workshops, large warehouses, and high-temperature work sites, where temperatures are often high and complex situations such as dust and mechanical collisions may occur, smoke detectors, also known as smoke-sensing fire detectors, smoke detectors, smoke probes, and smoke sensors, are mainly used in fire protection systems and are also used in security system construction.

[0003] Traditional smoke sensors have poor heat resistance. In high-temperature environments, internal components are prone to accelerated aging, resulting in decreased detection accuracy or even failure, making it difficult to achieve smoke monitoring functions. Some smoke sensors also have shells that do not meet the required strength and can be damaged by minor impacts from external dust, affecting their service life and monitoring stability.

[0004] Therefore, it is necessary to provide a smoke sensor with good heat resistance to solve the above-mentioned technical problems. The information disclosed in this background section is only intended to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or to imply in any way that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a smoke sensor with good heat resistance, which solves the problems mentioned in the background technology, such as poor heat resistance of smoke sensors, easy aging of internal components in high-temperature environments, reduced detection accuracy or even failure, difficulty in realizing smoke monitoring function, and the fact that the shell strength of some smoke sensors does not meet the requirements, and can be damaged by slight impacts from external powder, which affects their service life and monitoring stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a smoke sensor with good heat resistance, comprising a mounting base, a sensor body mounted on the upper end of the mounting base, the sensor body comprising a mounting shell, a high-temperature resistant base layer disposed on the outer surface of the mounting shell, a heat insulation layer disposed on the outer surface of the high-temperature resistant base layer, a protective layer disposed on the outer surface of the heat insulation layer, the high-temperature resistant base layer comprising a polyimide layer, an ABS material layer disposed on the outer surface of the polyimide layer, the protective layer comprising a polyphenylene sulfide layer, a PC material layer disposed on the outer surface of the polyphenylene sulfide layer, a detection head disposed on the upper end of the sensor body, a smoke inlet channel opened on the outer surface of the detection head, and the material of the detection head being the same as that of the mounting shell.

[0007] Preferably, the outer surface of the mounting shell is provided with heat dissipation holes, and the inside of the heat dissipation holes is provided with a dustproof mesh, and the heat dissipation holes are evenly distributed in a ring on the side of the mounting shell.

[0008] Preferably, the lower end of the mounting base is provided with a mounting hole, and the inner cavity of the mounting hole is provided with a mounting screw, and the upper end of the mounting screw is fixed with the lower end of the sensor body by a thread.

[0009] Preferably, a high-temperature resistant speaker is provided on the left side of the upper end of the detection head, a test button is provided on the front side of the right side of the upper end of the detection head, and a switch button is provided on the rear side of the right side of the upper end of the detection head.

[0010] Preferably, the lower end of the mounting base and the inner side of the mounting hole are provided with a mounting positioning groove in an annular shape.

[0011] Preferably, the thickness of the heat insulation layer is 0.8-1.2 mm, the thickness of the high-temperature resistant base layer is 1-1.5 mm, and the thickness of the protective layer is 1.2-1.8 mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model consists of a high-temperature resistant base layer, a heat insulation layer, and a protective layer sequentially arranged on the outer surface of the mounting shell. The polyimide layer in the high-temperature resistant base layer has excellent high-temperature resistance and can maintain structural stability in high-temperature environments. The ABS material layer enhances the toughness and strength of the base layer. The heat insulation layer can effectively block the transfer of external heat to the interior, preventing internal components from being damaged by high temperatures. The polyphenylene sulfide layer and PC material layer of the protective layer not only further improve the overall heat resistance but also resist chemical corrosion in high-temperature environments. This multi-layer structure design enables the smoke sensor to work stably for a long time in high-temperature environments, greatly improving its applicability in high-temperature scenarios.

[0014] 2. This utility model uses mounting holes at the bottom of the mounting base and mounting screws to firmly fix the sensor to the mounting base. The mounting positioning groove can play a role in quick positioning during the installation process, improving installation efficiency. The test button and switch button set on the detection head make it convenient for users to perform functional tests and switch control of the sensor at any time. The operation is simple and intuitive. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a bottom view of the mounting base and sensor main structure of this utility model;

[0017] Figure 3 This is a partial cross-sectional view of the main structure of the sensor of this utility model;

[0018] Figure 4 This is a partial sectional view of the high-temperature resistant base structure of this utility model;

[0019] Figure 5 This is a partial cross-sectional view of the thermal insulation layer structure of this utility model.

[0020] In the diagram: 1. Mounting base; 2. Sensor body; 3. Mounting shell; 4. High-temperature resistant base layer; 401. Polyimide layer; 402. ABS material layer; 5. Heat insulation layer; 6. Protective layer; 601. Polyphenylene sulfide layer; 602. PC material layer; 7. Detection head; 8. Smoke inlet channel. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Please see Figure 1-5 A smoke sensor with good heat resistance includes a mounting base 1, a sensor body 2 mounted on the upper end of the mounting base 1, a mounting shell 3, a high-temperature resistant base layer 4 on the outer surface of the mounting shell 3, a heat insulation layer 5 on the outer surface of the high-temperature resistant base layer 4, a protective layer 6 on the outer surface of the heat insulation layer 5, a polyimide layer 401 on the high-temperature resistant base layer 401, an ABS material layer 402 on the outer surface of the polyimide layer 401, a polyphenylene sulfide layer 601 on the outer surface of the polyphenylene sulfide layer 601, a PC material layer 602 on the outer surface of the polyphenylene sulfide layer 601, a detection head 7 on the upper end of the sensor body 2, a smoke inlet channel 8 on the outer surface of the detection head 7, and the material of the detection head 7 is the same as that of the mounting shell 3.

[0027] The outer surface of the mounting shell 3 is provided with heat dissipation holes, and the inside of the heat dissipation holes is provided with a dustproof mesh. The heat dissipation holes are evenly distributed in a ring on the side of the mounting shell 3. The heat dissipation holes on the outer surface of the mounting shell 3 are evenly distributed in a ring, which can dissipate the heat generated inside the sensor body 2 in a timely manner, and avoid the heat accumulation affecting the performance of the component. The dustproof mesh inside the heat dissipation holes can effectively block external dust from entering the inside of the sensor body 2, and prevent dust from adhering to the component and reducing the detection accuracy.

[0028] The mounting base 1 has a mounting hole at its lower end, and a mounting screw is provided in the inner cavity of the mounting hole. The upper end of the mounting screw has a mounting hole and is threaded to the lower end of the sensor body 2. The mounting base 1 can be firmly fixed to the lower part of the sensor body 2 through the mounting hole and the mounting screw.

[0029] A high-temperature resistant speaker is located on the left side of the upper end of the detection head 7, a test button is located on the front side of the right side of the upper end of the detection head 7, and a switch button is located on the rear side of the right side of the upper end of the detection head 7. The high-temperature resistant speaker can emit a clear alarm sound in time when smoke is detected, which can play an effective warning role.

[0030] The mounting base 1 has a mounting positioning groove in a ring shape at the lower end and inside the mounting hole. The mounting positioning groove can quickly position the sensor body 2 and the mounting base 1 during installation, thereby improving installation efficiency.

[0031] The thickness of the heat insulation layer 5 is 0.8-1.2mm, the thickness of the high temperature resistant base layer 4 is 1-1.5mm, and the thickness of the protective layer 6 is 1.2-1.8mm. The protective layer 6 can also resist certain external collisions and frictions, protect the internal structure from damage, and extend the service life of the sensor body 2.

[0032] In use, under high-temperature environmental conditions, the multi-layered protective structure of the mounting shell 3 forms a synergistic thermal barrier: the polyimide layer 401 in the high-temperature resistant base layer 4 provides the first level of thermal protection with a temperature resistance range of -269℃ to 400℃; the ABS material layer 402 enhances the overall structural integrity through polymer chain entanglement; the intermediate heat insulation layer 5 blocks the heat conduction path using its low thermal conductivity; and the polyphenylene sulfide layer 601 and the PC material layer 602 in the outer protective layer 6 form a composite barrier, resisting high environmental temperatures with the heat resistance of the crystalline polymer material and achieving physical protection through surface hardness. The annularly distributed heat dissipation holes on the side of the mounting shell 3 and the built-in dustproof net constitute a heat exchange system, which, while blocking dust intrusion, dissipates the Joule heat generated by the internal electronic components through natural convection, achieving thermal balance regulation and ensuring stable operation of the sensing element within the rated operating temperature range. After the smoke sensor is activated by the switch button, it enters the real-time monitoring mode. The detection head 7, as the core sensing unit, has smoke inlet vents on its outer surface. Channel 8 forms a smoke sampling path, through which external aerosol particles and smoke can enter the detection chamber, triggering an optical scattering or ion sensing mechanism. When the smoke concentration in the detection chamber reaches a preset threshold, the core processing unit triggers the signal transmission link, driving the high-temperature resistant speaker on the left side of the detection head 7 to generate an alarm signal. The test button inputs a simulated smoke signal, which verifies the integrity of the entire link from sensor sampling to actuator response. When the system is off, the switch button cuts off the power supply circuit and enters a low-power standby state. The entire operation process forms a closed-loop collaboration through the above steps, achieving accuracy and reliability of smoke monitoring in high-temperature and complex environments. The smoke sensor is existing technology and will not be described in detail here. The contents not described in detail in this description are existing technologies known to those skilled in the art, and their technical principles and implementation methods are within the general knowledge scope of those skilled in the art. To maintain the brevity of the specification, the basic technical details will not be repeated here, and the focus will be on describing the innovative improvements of this technology.

[0033] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, this utility model will not explain the control method and circuit connection in detail. The external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.

[0034] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smoke sensor with good heat resistance, comprising a mounting base (1), characterized in that: The sensor body (2) is mounted on the upper end of the mounting base (1). The sensor body (2) includes a mounting shell (3). The outer surface of the mounting shell (3) is provided with a high-temperature resistant base layer (4). The outer surface of the high-temperature resistant base layer (4) is provided with a heat insulation layer (5). The outer surface of the heat insulation layer (5) is provided with a protective layer (6). The high-temperature resistant base layer (4) includes a polyimide layer (401). The outer surface of the polyimide layer (401) is provided with an ABS material layer (402). The protective layer (6) includes a polyphenylene sulfide layer (601). The outer surface of the polyphenylene sulfide layer (601) is provided with a PC material layer (602). The upper end of the sensor body (2) is provided with a detection head (7). The outer surface of the detection head (7) is provided with a smoke inlet channel (8). The material of the detection head (7) is the same as that of the mounting shell (3).

2. A smoke sensor with good heat resistance according to claim 1, characterized in that: The outer surface of the mounting shell (3) is provided with heat dissipation holes, and the inside of the heat dissipation holes is provided with a dustproof mesh. The heat dissipation holes are evenly distributed in a ring on the side of the mounting shell (3).

3. A smoke sensor with good heat resistance according to claim 1, characterized in that: The mounting base (1) has a mounting hole at its lower end, and a mounting screw is provided in the inner cavity of the mounting hole. The mounting screw has a mounting hole at its upper end and is threaded to the lower end of the sensor body (2).

4. A smoke sensor with good heat resistance according to claim 1, characterized in that: A high-temperature resistant speaker is provided on the left side of the upper end of the detection head (7), a test button is provided on the front side of the right side of the upper end of the detection head (7), and a switch button is provided on the rear side of the right side of the upper end of the detection head (7).

5. A smoke sensor with good heat resistance according to claim 3, characterized in that: The mounting base (1) has an annular mounting positioning groove at its lower end and inside the mounting hole.

6. A smoke sensor with good heat resistance according to claim 1, characterized in that: The thickness of the heat insulation layer (5) is 0.8-1.2 mm, the thickness of the high temperature resistant base layer (4) is 1-1.5 mm, and the thickness of the protective layer (6) is 1.2-1.8 mm.

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