Smoke alarm with temperature sensing structure

Abstract

The application provides a smoke alarm with a temperature detection structure, comprising a smoke alarm body, the smoke alarm body comprising a flow guide fan, a reflection assembly, an infrared emission module and an infrared receiving module, the flow guide fan being installed at the bottom of a top plate, the side edges of the top plate each being provided with a fixing seat, the top plate and the bottom structure each being installed on a ceiling by using a screw passing through the fixing seat, the side edges of the top plate being provided with a plurality of smoke exhaust holes, the flow guide fan sucking in air from the bottom and blowing out from the smoke exhaust holes, the infrared emission module and the infrared receiving module each being installed at the bottom position by the reflection assembly, only the reflection assembly needing to be maintained and cleaned, the protection effect of the infrared emission module and the infrared receiving module being improved, the temperature sensing module being installed at the bottom of the reflection assembly, the temperature sensing module being quickly cleaned and processed without the need of disassembling the shell.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of alarm, in particular to a smoke alarm with temperature detection structure. BACKGROUND

[0002] There are two types of smoke alarms, ion type smoke detector and photoelectric type smoke detector, among which photoelectric type smoke detector has been widely applied. However, in the prior art, the infrared emitting element and the receiving element in the photoelectric type smoke detector are directly installed in the sensing chamber and directly contact with the external air, so that the smoke rising from the bottom directly contacts the surface of the infrared emitting element and the receiving element. Even for some smoke types generated by smoking behavior which do not need to trigger the alarm, the module surface will be blocked by smoke particles due to long-time adhesion of smoke, affecting the sensitivity when the alarm is really needed in the case of subsequent fire. On the other hand, in the smoke alarm with temperature detection structure, the thermistor temperature sensing element also needs to be regularly maintained and cleaned to avoid being covered by smoke particles, resulting in slow temperature transmission efficiency. The conventional cleaning method is manual wiping, which is inconvenient, time-consuming and laborious. SUMMARY

[0003] In view of the deficiencies in the prior art, the present application aims to provide a smoke alarm with temperature detection structure to solve the problems raised in the background art. The present application can avoid the accumulation of smoke particles on the infrared emitting module and the infrared receiving module, is convenient to clean, has a long service life and is easy to maintain.

[0004] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme: a smoke alarm with temperature detection structure, comprising a smoke alarm body, the smoke alarm body comprising a flow guide fan, a reflection assembly, an infrared emitting module and an infrared receiving module, the flow guide fan being installed at the bottom of the top plate, the side edges of the top plate being provided with fixing seats, the structure of the top plate and the bottom being installed on the ceiling by using screws passing through the fixing seats, a plurality of smoke exhaust holes being formed in the side edges of the top plate, the flow guide fan drawing air from the bottom and blowing it out from the smoke exhaust holes, the bottom end of the fixing seat being provided with a connecting bracket, the bottom end of the connecting bracket being fixedly installed with the infrared emitting module and the infrared receiving module respectively, the bottom end of the reflection assembly being provided with an adjusting mechanism, both ends of the bottom of the reflection assembly being fixedly connected with the infrared emitting module and the infrared receiving module at the bottom through guide plates, the middle of the guide plate being provided with a light path channel, the infrared light emitted inside the infrared emitting module entering the inside of the reflection assembly along the light path channel.

[0005] Further, the reflection assembly comprises a reflection box and a reflector, top light holes are formed on both sides of the bottom end of the reflection box, a sponge pad is attached to the inside of the reflection box, a support sleeve is installed on the outside of the bottom of the reflection box, the reflector is installed at the middle position of the inside of the reflection box, and the bottom end of the reflector is fixedly connected with the top of the adjusting mechanism.

[0006] Further, the reflection assembly is fixedly installed at the top position between the infrared emission module and the infrared receiving module, the top light holes are aligned with the light path channels, and the guide plates are shielded at the side edge positions of each top light hole.

[0007] Further, the top of the reflector is connected with a spring, and the top of the spring is fixedly connected with the top of the inner wall of the reflection box.

[0008] Further, the adjusting mechanism comprises a pull rod and a support column, the pull rod is fixedly installed at the end of the support column, a temperature sensing module is installed on the surface of the support column, and a sponge sleeve is attached to the inner wall of the support sleeve.

[0009] Further, the top of the support column is perpendicular to the center point of the bottom end of the reflector, the surface of the temperature sensing module is flush with the surface of the support column, and the temperature sensing module is cleaned by friction with the sponge sleeve.

[0010] Further, the infrared emission module comprises an emission bin and an infrared emission tube, a supporting plate is installed in the inside of the emission bin, a clamping groove is formed in the middle of the supporting plate, and a correction mechanism is installed in the inside of the clamping groove.

[0011] Further, a universal ball is installed in the middle of the correction mechanism, adjusting rods are arranged at the top and bottom of the universal ball, handles are arranged at the bottom end of the adjusting rods, the infrared emission tube is fixedly installed at the top of the adjusting rods, and the bottom end of the emission bin is locked and sealed by the installed cover plate.

[0012] Further, the infrared receiving module and the infrared emission module are installed on the same horizontal plane, the infrared receiving module comprises a receiving bin and a photosensitive tube, and the photosensitive tube is fixedly installed in the inside of the receiving bin.

[0013] Further, bottom light holes are formed in the top of the receiving bin and the emission bin, and the bottom light holes are aligned with the external light path channels.

[0014] The beneficial effects of the present application: a smoke alarm with temperature detection structure, comprising a smoke alarm body, the smoke alarm body comprises a top plate, a fixing seat, a smoke exhaust hole, a flow guide fan, a connecting bracket, an infrared emission module, an infrared receiving module, a reflection assembly, an adjusting mechanism, a guide plate, a reflection box, a top light transmission hole, a light path channel, a support sleeve, a pull rod, a support column, a temperature sensing module, a reflector, a launch warehouse, a cover plate, a correction mechanism, a receiving warehouse, a photosensitive tube, a bottom light transmission hole, a supporting plate, a clamping groove, an infrared emission tube, an adjusting rod, a universal ball, a handle, a spring, a sponge pad, a sponge sleeve.

[0015] 1. The smoke alarm with temperature detection structure can install the infrared emission module and the infrared receiving module at the bottom position through the added reflection assembly, only needs to maintain and clean the reflection assembly, reduces the cleaning steps, and improves the protection effect of the infrared emission module and the infrared receiving module.

[0016] 2. The smoke alarm with temperature detection structure installs the temperature sensing module at the bottom of the reflection assembly, realizes quick cleaning treatment of the temperature sensing module, and does not need to disassemble the shell, simplifying the operation.

[0017] 3. The smoke alarm with temperature detection structure sets the light path of both sides as an open structure, thus increasing the smoke sensing area, and improving the smoke sensitivity, sensitivity and accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic view of the appearance of the smoke alarm with temperature detection structure of the present application;

[0019] Figure 2 It is the structure schematic view of the infrared light path part of the smoke alarm with temperature detection structure of the present application;

[0020] Figure 3 It is the structure schematic view of the infrared emission module part of the smoke alarm with temperature detection structure of the present application;

[0021] Figure 4 It is the internal section view of the reflection assembly of the smoke alarm with temperature detection structure of the present application;

[0022] Figure 5 It is the structure schematic view of the reflection assembly inside the smoke alarm with temperature detection structure of the present application;

[0023] In the figure: 1, top plate; 2, fixed seat; 3, smoke exhaust hole; 4, guide fan; 5, connecting support; 6, infrared emission module; 7, infrared receiving module; 8, reflection assembly; 9, adjusting mechanism; 10, guide plate; 11, reflection box; 12, top light transmission hole; 13, light path channel; 14, support sleeve; 15, pull rod; 16, support column; 17, temperature sensing module; 18, reflector; 19, emission chamber; 20, cover plate; 21, correction mechanism; 22, receiving chamber; 23, photosensitive tube; 24, bottom light transmission hole; 25, supporting plate; 26, clamping groove; 27, infrared emission tube; 28, adjusting rod; 29, universal ball; 30, handle; 31, spring; 32, sponge pad; 33, sponge sleeve. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0025] Please refer to Figures 1 to 5The application provides a technical scheme: a smoke alarm with a temperature detection structure, which comprises a smoke alarm body, the smoke alarm body comprises a flow guide fan 4, a reflection assembly 8, an infrared emission module 6 and an infrared receiving module 7, the flow guide fan 4 is installed at the bottom of a top plate 1, the side edges of the top plate 1 are each provided with a fixed seat 2, the top plate 1 and the structure at the bottom are installed on the ceiling by using screws passing through the fixed seat 2, a plurality of smoke exhaust holes 3 are formed in the side edges of the top plate 1, the flow guide fan 4 draws air from the bottom and blows out from the smoke exhaust holes 3, a connecting bracket 5 is arranged at the bottom end of the fixed seat 2, the infrared emission module 6 and the infrared receiving module 7 are respectively and fixedly installed at the bottom end of the connecting bracket 5, an adjusting mechanism 9 is installed at the bottom end of the reflection assembly 8, the two ends of the bottom of the reflection assembly 8 are fixedly connected with the infrared emission module 6 and the infrared receiving module 7 at the bottom through guide plates 10, a light path channel 13 is arranged in the middle of the guide plate 10, the infrared light emitted inside the infrared emission module 6 enters the inside of the reflection assembly 8 along the light path channel 13, the smoke alarm with the temperature detection structure continuously emits infrared light outward through the infrared emission module 6, and the light passes through the inside of the light path channel 13, and finally irradiates on a photosensitive tube 23 inside the infrared receiving module 7 through the reflection assembly 8, when smoke with sufficient concentration is generated, the infrared light beam generated by an infrared emission tube 27 is scattered by smoke particles floating into the light path channel 13, the strength of the scattered light is proportional to the concentration of the smoke, so the strength of the infrared light beam received by the photosensitive tube 23 changes, the change is converted into a point signal through a circuit board structure inside the top plate 1, finally converted into an alarm signal to trigger an alarm, and meanwhile, a temperature sensing function is realized through a temperature sensing module 17 at the bottom end of the adjusting mechanism 9, wherein the temperature sensing module 17, the infrared emission tube 27 and the photosensitive tube 23 are all existing mature technologies, and the structure is installed at the bottom of the device and connected with external alarm equipment according to the existing scheme, so that the triggering effect can be realized.

[0026] The reflection assembly 8 includes a reflection box 11 and a reflector 18, the reflection box 11 is provided with a top light transmission hole 12 on both sides of the bottom end, a sponge pad 32 is attached to the inside of the reflection box 11, a support sleeve 14 is installed on the outside of the bottom of the reflection box 11, the reflector 18 is installed at the middle position of the inside of the reflection box 11, and the bottom end of the reflector 18 is fixedly connected with the top of the adjusting mechanism 9, the reflection assembly 8 is fixedly installed at the top position between the infrared emission module 6 and the infrared receiving module 7, and the top light transmission hole 12 is aligned with the light path channel 13, the guide plate 10 is shielded at the side edge position of each top light transmission hole 12, the top of the reflector 18 is connected with a spring 31, and the top of the spring 31 is fixedly connected with the top inside wall of the reflection box 11. By adding the reflection assembly 8, the infrared emission module 6 and the infrared receiving module 7 can be installed at the bottom, and only the radiation assembly is arranged at the top. Therefore, during subsequent use, since the smoke moves from bottom to top, it will mainly adhere to the reflection assembly 8. In the later period, only the reflection assembly 8 needs to be cleaned, and the infrared emission module 6 and the infrared receiving module 7 do not need to be cleaned, thereby reducing the cleaning steps and improving the protection effect of the infrared emission module 6 and the infrared receiving module 7. When cleaning, the reflector 18 is pulled down to the sponge pad 32 by pulling the pull rod 15, at this time the pull rod 15 is rotated, the bottom mirror surface of the reflector 18 is scraped and cleaned through the sponge pad 32, then the temperature sensing module 17 is pushed into the sponge sleeve 33 and rotated again by pushing the pull rod 15, and the sponge sleeve 33 can also clean the temperature sensing module 17. During the whole process, the shell does not need to be disassembled, and the reflector 18 will be reset to the initial state under the action of the spring 31 after the pull rod 15 is loosened.

[0027] The adjusting mechanism 9 includes a pull rod 15 and a support column 16, the pull rod 15 is fixedly installed at the end of the support column 16, the surface of the support column 16 is provided with a temperature sensing module 17, the inside wall of the support sleeve 14 is attached with a sponge sleeve 33, the top of the support column 16 is perpendicular to the center point of the bottom end of the reflector 18, the surface of the temperature sensing module 17 is flush with the surface of the support column 16, and the temperature sensing module 17 is rubbed and cleaned by contacting the surface with the sponge sleeve 33. By installing the temperature sensing module 17 at the bottom of the reflection assembly 8 and contacting the surface with the sponge sleeve 33, the temperature sensing module 17 can be quickly cleaned when the reflector 18 inside the reflection assembly 8 is cleaned, thereby greatly reducing the cleaning efficiency and simplifying the operation. The cleaning effect is good, and the adjusting mechanism 9 is always exposed to the outside, so that the temperature sensing module 17 can be pulled by manually pulling the pull rod 15, and the top reflector 18 part can also be rotated and controlled by pulling the pull rod 15.

[0028] The infrared emission module 6 comprises an emission chamber 19 and an infrared emission tube 27, the inside of the emission chamber 19 is provided with a supporting plate 25, the middle of the supporting plate 25 is provided with a clamping groove 26, the inside of the clamping groove 26 is provided with a correction mechanism 21, the middle of the correction mechanism 21 is provided with a universal ball 29, the top and bottom of the universal ball 29 are provided with adjusting rods 28, the bottom end of the adjusting rod 28 is provided with a handle 30, the infrared emission tube 27 is fixedly installed at the top of the adjusting rod 28, the bottom end of the emission chamber 19 is locked and sealed by the installed cover plate 20, the bottom end of the infrared emission tube 27 is embedded in the clamping groove 26 through the universal ball 29, therefore, by pulling the handle 30 at the bottom, the pointing angle of the adjusting rod 28 can be controlled through the universal ball 29, and then the pointing angle of the top infrared emission tube 27 is controlled, and the angle fine adjustment function of the infrared light beam is realized.

[0029] The infrared receiving module 7 is installed on the same horizontal plane as the infrared emission module 6, the infrared receiving module 7 comprises a receiving chamber 22 and a photosensitive tube 23, the photosensitive tube 23 is fixedly installed in the inside of the emission chamber 19, the top of the receiving chamber 22 and the emission chamber 19 are both provided with a bottom light transmission hole 24, and the bottom light transmission hole 24 is aligned with the external light path channel 13, the light path on both sides is set as an open structure, therefore, the sensing area of smoke is increased, and the sensitivity to smoke is improved, and the smoke in the range is guided to the side through the top guide fan 4, so as to avoid long-term accumulation near the alarm to cause continuous increase of concentration, and to avoid triggering the alarm in some similar smoking behaviors, improve the sensitivity and accuracy, when in use, after the infrared emission tube 27 is started, the infrared light passes out from the bottom light transmission hole 24 above the emission chamber 19, passes into from the top light transmission hole 12 on one side of the reflection box 11 along the light path channel 13, is reflected by the reflector 18, and then passes out from the top light transmission hole 12 on the other end, and finally irradiates on the photosensitive tube 23 along the light path channel 13 on the other side for detection, once the inside of the light path channel 13 is blocked by smoke particles, the light irradiation intensity of the photosensitive tube 23 changes, and the smoke concentration state can be detected to determine whether to trigger the alarm.

[0030] The basic principle and main features of the present application are shown and described, and the advantages of the present application are shown and described, for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0031] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes only one independent technical solution, and the specification is described in this way only for the sake of clarity, and 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 those skilled in the art can understand.

Claims

1. A smoke alarm with temperature sensing structure comprising a smoke alarm body, characterised in that: The smoke alarm body comprises a flow guide fan, a reflection assembly, an infrared emission module and an infrared receiving module, the flow guide fan is installed at the bottom of the top plate, the side edges of the top plate are provided with fixing seats, the top plate is installed on the ceiling by using screws through the fixing seats, the side edges of the top plate are provided with a plurality of smoke exhaust holes, the flow guide fan draws in air from the bottom and blows out from the smoke exhaust holes, the bottom end of the fixing seat is provided with a connecting bracket, the bottom end of the connecting bracket is fixedly installed with the infrared emission module and the infrared receiving module respectively, the bottom end of the reflection assembly is installed with an adjusting mechanism, the two ends of the bottom of the reflection assembly are fixedly connected with the infrared emission module and the infrared receiving module through guide plates, the middle of the guide plate is provided with a light path channel, the infrared light emitted inside the infrared emission module enters the inside of the reflection assembly along the light path channel, the reflection assembly comprises a reflection box and a reflector, the bottom end of the reflection box is provided with a top light transmission hole on both sides, the inside of the reflection box is attached with a sponge pad, the outside of the bottom of the reflection box is installed with a support sleeve, the reflector is installed at the middle position of the inside of the reflection box, and the bottom end of the reflector is fixedly connected with the top of the adjusting mechanism, the reflection assembly is fixedly installed at the top position between the infrared emission module and the infrared receiving module, and the top light transmission hole is aligned with the light path channel, the guide plate is shielded at the side edge position of each top light transmission hole, the top of the reflector is connected with a spring, the top of the spring is fixedly connected with the top of the inner wall of the reflection box, the adjusting mechanism comprises a pull rod and a support column, the pull rod is fixedly installed at the end of the support column, the surface of the support column is installed with a temperature sensing module, the inner wall of the support sleeve is attached with a sponge sleeve, the top of the support column is perpendicular to the center point of the bottom end of the reflector, the surface of the temperature sensing module is flush with the surface of the support column, and the temperature sensing module is cleaned by friction contact with the sponge sleeve, the infrared emission module comprises an emission bin and an infrared emission tube, the inside of the emission bin is installed with a supporting plate, the middle of the supporting plate is provided with a clamping groove, the inside of the clamping groove is installed with a correction mechanism, the middle of the correction mechanism is installed with a universal ball, the top and bottom of the universal ball are provided with adjusting rods, the bottom end of the adjusting rod is provided with a handle, the infrared emission tube is fixedly installed at the top of the adjusting rod, and the bottom end of the emission bin is locked and plugged by the installed cover plate.

2. A smoke alarm with temperature sensing structure according to claim 1, characterized in that: The infrared receiving module and the infrared emission module are installed on the same horizontal plane, the infrared receiving module comprises a receiving bin and a photosensitive tube, and the photosensitive tube is fixedly installed in the inside of the receiving bin.

3. A smoke alarm with temperature sensing structure according to claim 2, wherein: The top of the receiving bin and the top of the emission bin are provided with bottom light transmission holes, and the bottom light transmission holes are aligned with the outside light path channel.

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