CN209103484U - Feel smoke sensor and smoke detection alarm - Google Patents

Abstract

Present disclose provides a kind of sense smoke sensor and smoke detection alarms, belong to sensor technical field.The sense smoke sensor includes light detection shell, light emitting component, optical detection component and conducting element, wherein: conducting element is mounted on light detection shell, light emitting component and optical detection component are mounted in light detection shell, are provided with first through hole on light detection shell；Smog flow-guiding channel is formed between conducting element and light detection shell, smog flow-guiding channel includes the first flow-guiding channel and the second flow-guiding channel being connected, within the scope of predetermined angle, the second flow-guiding channel is connected angle between first flow-guiding channel and the second flow-guiding channel with first through hole.It, can there is a situation where false alarms to avoid smoke detection alarm using the disclosure.

Description

Feel smoke sensor and smoke detection alarm

Technical field

This disclosure relates to sensor technical field, in particular to a kind of sense smoke sensor and smoke detection alarm.

Background technique

Smoke detection alarm be it is a kind of detect pyrotechnics alarm, mainly include shell, sense smoke sensor, wiring board and Warning piece, wherein sense smoke sensor, wiring board and warning piece are respectively mounted in the shell, and sense smoke sensor will be for that will receive To optical signal be converted to electric signal, and be sent to wiring board, wiring board is used to detect the intensity of light, if wiring board detects Intensity to light is greater than preset threshold, then controls warning piece and issue alarm.

In the related technology, above-mentioned sense smoke sensor generally includes light detection shell, light emitting component and optical detection member device Part, wherein light emitting component and optical detection component are installed in light detection shell；It is arranged on the side wall of light detection shell There are multiple light bars, smog is entered in light detection shell by light bar.There is no the case where smog in light detection shell Under, the light of light emitting component transmitting can not be detected by optical detection component；And there are the feelings of smog in light detection shell Under condition, the light of light emitting component transmitting can encounter the smog in light detection shell and scatter, and the light after scattering is just Meeting directive optical detection component, is detected, the optical signal received is converted to electricity by optical detection component by optical detection component Signal is simultaneously sent to wiring board.

In implementing the present disclosure, inventor find the relevant technologies the prior art has at least the following problems:

The light bar of sense smoke sensor in the related technology not only can be such that smog enters in light detection shell, can also make Light in environment enters in light detection shell, and the light in environment enters in light detection shell and understands by optical detection member device Part receives, and then causes smoke detection alarm that false alarm occurs.

Utility model content

The embodiment of the present disclosure provides a kind of sense smoke sensor and smoke detection alarm, to solve asking for the relevant technologies Topic.The technical solution is as follows:

According to the embodiment of the present disclosure, provide a kind of sense smoke sensor, the sense smoke sensor include light detection shell (1), Light emitting component (2), optical detection component (3) and conducting element (4), in which:

Conducting element (4) is mounted on light detection shell (1), and light emitting component (2) and optical detection component (3) are mounted on In light detection shell (1), first through hole (11) are provided on light detection shell (1)；

It is formed between conducting element (4) and light detection shell (1) smog flow-guiding channel (5), smog flow-guiding channel (5) includes The first flow-guiding channel (51) and the second flow-guiding channel (52) being connected, the first flow-guiding channel (51) and the second flow-guiding channel (52) Between angle within the scope of predetermined angle, the second flow-guiding channel (52) is connected with first through hole (11).

Optionally, light detection shell (1) includes hood (12) and pedestal (13)；

Light emitting component (2), optical detection component (3) and hood (12) are installed on pedestal (13), light emitting Component (2) and optical detection component (3) are located in hood (12), and conducting element (4) is mounted on the cover of hood (12) (121) on；

Smog flow-guiding channel (5) is located between the cover (121) and conducting element (4), and first through hole (11) is arranged in the cover (121) on.

Optionally, conducting element (4) includes fairing cap (41) and baffle (42)；

Fairing cap (41) is mounted on the cover (121), and baffle (42) is mounted on fairing cap (41) close to the cover (121) On surface, and it is corresponding with first through hole (11)；

It is formed between fairing cap (41) and the cover (121) the first flow-guiding channel (51), the second flow-guiding channel (52) setting exists On baffle (42).

Optionally, conducting element (4) includes fairing cap (41), and fairing cap (41) is mounted on the cover (121)；

Fairing cap (41) is provided with multiple deflectors (43), two neighboring deflector on the surface of the cover (121) (43) the first flow-guiding channel (51) are formed between.

Optionally, conducting element (4) further includes the baffle (42) of column structure, and baffle (42) is mounted on fairing cap (41) On the surface of the cover (121), and it is corresponding with first through hole (11)；

Baffle (42) is provided with multiple bar shaped teeth (44) along short transverse, is formed between two neighboring bar shaped tooth (44) Second flow-guiding channel (52).

Optionally, the height of baffle (42) is more than or equal to the height of deflector (43).

Optionally, the second flow-guiding channel (52) is the channel of slide shape.

Optionally, it is corresponded in the cover (121) of hood (12) and filter screen is installed at the position of first through hole (11) (9)。

Optionally, the distance between conducting element (4) and filter screen (9) are the first default value.

Optionally, the light-blocking chimb (132) of pedestal (13), gear are provided perpendicular on pedestal (13) at marginal position Light chimb (132) is located in hood (12), and the spacing between light-blocking chimb (132) and hood (12) is the second present count Value.

Optionally, sense smoke sensor further includes the shielding case (8) matched with optical detection component, shielding case (8) installation In light detection shell (1)；

The second through-hole (81), light are provided on the side wall of shielding case (8) at position corresponding with optical detection component (3) Detection component (3) is located in shielding case (8).

Optionally, the inner surface of light detection shell (1) and light detection shell (1) be internally provided with it is strong for light of decaying The bulge-structure (14) of degree.

The embodiment of the present disclosure additionally provides a kind of smoke detection alarm, the smoke detection alarm include wiring board, Shell, warning piece and sense smoke sensor described above, in which:

The sense smoke sensor, the warning piece and wiring board installation are in the housing.

Technical solution bring beneficial effect provided by the embodiments of the present application includes at least:

In the embodiment of the present disclosure, the sense smoke sensor include light detection shell, light emitting component, optical detection component and Conducting element, in which: conducting element is mounted on light detection shell, and light emitting component and optical detection component are mounted on light detection shell In body, first through hole is provided on light detection shell；Smog flow-guiding channel, smog are formed between conducting element and light detection shell Flow-guiding channel includes the first flow-guiding channel and the second flow-guiding channel being connected, and the second flow-guiding channel is connected with first through hole, First flow-guiding channel intersects with the second flow-guiding channel, and the angle formed is within the scope of predetermined angle.There is no the case where smog Under, even if the light in environment is entered in smog flow-guiding channel by the first flow-guiding channel, but in air due to light Along straightline propagation, and the first flow-guiding channel and the second flow-guiding channel are not point-blank, therefore light cannot be led to by the first water conservancy diversion Road enters in the second flow-guiding channel, and then the light in environment can not enter light detection shell by the second flow-guiding channel Inside, therefore cannot be received by optical detection component, in turn, avoid smoke detection alarm and false alarm occurs.

Detailed description of the invention

In order to illustrate more clearly of the technical solution in the embodiment of the present disclosure, will make below to required in embodiment description Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present disclosure, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.

Fig. 1 is a kind of structural schematic diagram for sense smoke sensor that the embodiment of the present disclosure provides；

Fig. 2 is a kind of structural schematic diagram for sense smoke sensor that the embodiment of the present disclosure provides；

Fig. 3 is a kind of structural schematic diagram of the hood for sense smoke sensor that the embodiment of the present disclosure provides；

Fig. 4 is a kind of structural schematic diagram of the pedestal for sense smoke sensor that the embodiment of the present disclosure provides；

Fig. 5 is a kind of structural schematic diagram of the conducting element for sense smoke sensor that the embodiment of the present disclosure provides；

Fig. 6 is a kind of structural schematic diagram for sense smoke sensor that the embodiment of the present disclosure provides.

Marginal data

1, light detection shell 2, light emitting component

3, optical detection component 4, conducting element

5, smog flow-guiding channel 6, the first mounting box

7, the second mounting box 8, shielding case

9, filter screen 11, first through hole

12, hood 13, pedestal

14, bulge-structure 41, fairing cap

42, baffle 43, deflector

44, bar shaped tooth 51, the first flow-guiding channel

52, the second flow-guiding channel 61, first installation lid

62, the first mounting base 71, second installation lid

72, the second mounting base 81, the second through-hole

121, the cover 122, location hole

131, chimb 132, light-blocking chimb

Specific embodiment

To keep the purposes, technical schemes and advantages of the disclosure clearer, below in conjunction with attached drawing to disclosure embodiment party Formula is described in further detail.

The embodiment of the present disclosure provides a kind of sense smoke sensor, as shown in Figure 1, the sense smoke sensor includes light detection shell 1, light emitting component 2, optical detection component 3 and conducting element 4, in which: conducting element 4 is mounted on light detection shell 1, light emitting Component 2 and optical detection component 3 are mounted in light detection shell 1, and first through hole 11 is provided on light detection shell 1；Such as Fig. 2 It is shown, smog flow-guiding channel 5 is formed between conducting element 4 and light detection shell 1, as shown in Figure 1, smog flow-guiding channel 5 includes The first flow-guiding channel 51 and the second flow-guiding channel 52 being connected, the folder between the first flow-guiding channel 51 and the second flow-guiding channel 52 Within the scope of predetermined angle, the second flow-guiding channel 52 is connected with first through hole 11 at angle.

Wherein, light emitting component 2 and optical detection component 3 can be light emitting diode etc..

First flow-guiding channel 51 intersects with the second flow-guiding channel 52, and the angle being crossed to form is within the scope of predetermined angle, in advance If angular range may be greater than or be equal to 90 degree, and less than 180 degree, for example, the first flow-guiding channel 51 can be it is lateral Flow-guiding channel, the second flow-guiding channel 52 can be vertical or slanting flow-guiding channel.

In an implementation, which from the appearance mainly includes light detection shell 1 and conducting element 4, and conducting element 4 is pacified Smog flow-guiding channel 5 is formed between the top of light detection shell 1, light detection shell 1 and conducting element 4.Wherein, light emitting member Device 2 and optical detection component 3 are mounted on the inside that light detection shell 1 is mounted on light detection shell 1, and light detection shell 1 faces First through hole 11 is provided on the surface of conducting element 4, smog flow-guiding channel 5 includes the first flow-guiding channel 51 and second being connected Flow-guiding channel 52, the second flow-guiding channel 52 are connected with first through hole 11.

Has the sense smoke sensor of above structure, in the case where no smog, even if the light in environment passes through first Flow-guiding channel 51 enters in smog flow-guiding channel 5, but light is in air along straightline propagation, and the first flow-guiding channel 51 with Not point-blank, therefore light cannot enter light detection shell 1 by the second flow-guiding channel 52 to second flow-guiding channel 52 Inside, therefore can not be received by optical detection component 3, in turn, avoids smoke detection alarm and false alarm occurs.

The specific structure of the sense smoke sensor is described in detail below:

The light detection shell 1 of the sense smoke sensor is referred to as sensor housing, is the shell for feeling smoke sensor, makees With being on the one hand to keep off dust for shading, on the other hand for protecting internal component.The shape of light detection shell 1 can be The box-like of arbitrary shape, box-like etc. may include upper cover, side wall and pedestal, wherein upper cover, side wall and pedestal are enclosed secretly Room (is referred to as labyrinth), and any two in upper cover, side wall and pedestal can be integrally formed, and is processed by Shooting Technique. For example, the upper cover and side wall of light detection shell 1 can be integrally formed, in this way such as Fig. 3 and Fig. 4 and refering to what is shown in Fig. 2, light detection shell Body 1 may include the pedestal 13 of hood 12 and plate, and hood 12 covers on pedestal 13, form darkroom.In another example light detection The side wall and pedestal of shell 1 are integrally formed, and such light detection shell 1 includes the upper cover of plate and the pedestal with side wall, upper cover Lid closes on the pedestal with side wall, forms darkroom.

Wherein, the shape of hood 12 and pedestal 13 is depending on the concrete shape of light detection shell 1, for example, light detection The appearance of shell 1 has cylindric, then the shape of hood 12 is cylindrical shape, and the shape of pedestal 13 is disk-shaped.In another example light The appearance for detecting shell 1 has polygonal column, then the shape of hood 12 is polygon tubular, and the shape of pedestal 13 is polygon Shape plate.

It should be pointed out that the concrete shape of light detection shell 1, the present embodiment is without limitation, can block environment In light and dust, protect the internal component installed, those skilled in the art can according to actual needs flexibly Setting.It can include cylindric 13 example of hood 12 and disk-shaped pedestal with light detection shell 1 in the present embodiment, other Situation is similar therewith, can refer to this kind of situation, just no longer repeat one by one.

In addition, the size of hood 12 and the size of pedestal 13 match, for example, the radius of disk-shaped pedestal 13 can be with Equal to the outer diameter of cylindric hood 12, the radius of disk-shaped pedestal 13 can also be greater than the outer of cylindric hood 12 Diameter, the radius of disk-shaped pedestal 13 are also less than the outer diameter of cylindric hood 12.The present embodiment is without limitation, Technical staff can flexible setting according to actual needs, cylindrical shape can be greater than with the radius of pedestal 13 in the attached drawing of the present embodiment Hood 12 outer diameter example.

Optionally, hood 12 is mounted on pedestal 13, mounting means have it is a variety of, for example, screw can be passed through Mode connects, or is connected by way of buckle.For example, hood 12 can be set vertically close to the edge of pedestal With the turnup structure of the cover wall of hood 12, which turns over the outside to hood 12, corresponds to turnup structure on pedestal 13 Position at be provided with buckle, hood 12 is mounted on pedestal 13 by turnup structure with matching of buckling.

In an implementation, as shown in Fig. 2, hood 12 is connected by a snap with pedestal 13, axis can be carried out to hood 12 To limit, hood 12 can also be equivalent to pedestal 13 and move in the plane where pedestal 13, in order to further to shading 12 limit of cover, correspondingly, that is to say, such as Fig. 3 is simultaneously referred to as shown in figure 4, pedestal 13 can have stepped disk-shaped structure Shown in Fig. 1, the edge of pedestal 13 is provided with chimb 131, the outer diameter of chimb 131 is less than the internal diameter of hood 12, hood Chimb 131 is covered on inside by 12.In order to realize that position-limiting action, the inner wall of hood 12 can also fit with 131 outer wall of chimb, In turn, chimb 131 can limit hood 12 and move in the plane where pedestal 13.

Optionally, the light in environment by the gap between hood 12 and pedestal 13 enters hood in order to prevent 12 inside, correspondingly, as shown in figure 4, being provided perpendicular to the light-blocking chimb of pedestal on pedestal 13 at marginal position 132, light-blocking chimb 132 is located in hood 12, and the spacing between light-blocking chimb 132 and hood 12 is the second default value.

In an implementation, the shape of light-blocking chimb 132 is matched with the shape of pedestal 13, for example, being disk-shaped in pedestal 13 In the case where, such as Fig. 4 and refering to what is shown in Fig. 1, the shape of light-blocking chimb 132 is also circle, light-blocking chimb 132 can be along pedestal 13 circumferencial direction is arranged perpendicular to pedestal 13.Light-blocking chimb 132 has certain thickness, outer diameter and hood 12 Internal diameter matches, for example, in turn, hood 12 can as shown in Figure 1, the outer diameter of light-blocking chimb 132 is less than the internal diameter of hood 12 Light-blocking chimb 132 is covered on inside.Wherein, light-blocking chimb 132 can also replace above-mentioned chimb 131, that is to say do not having In the case where chimb 131, the outer wall of light-blocking chimb 132 can also fit with the inner wall of hood 12, in this way, both can be to avoid Light in environment enters the inside of hood 12, limit can also be played in the plane for being parallel to pedestal 13 to hood 12 Position effect keeps the installation of hood 12 and pedestal 13 more firm.Certainly, chimb 131, but also setting gear be not only set on pedestal 13 Light chimb 132, wherein the height of light-blocking chimb 132 is higher than the height of chimb 131, and the radius of light-blocking chimb 132 is less than chimb 131 radius.

Wherein, if light-blocking chimb 132 is distant apart from hood 12, light blocking effect can be weaker, and can shadow The arrangement for ringing 12 internal part of hood, the spacing between light-blocking chimb 132 and hood 12 are the second default value, and second is pre- Depending on if numerical value can be by theoretical calculation and test.

Optionally, in the case where the inside non smoke of light detection shell 1, light emitting component 2 emits in order to prevent Light is received by optical detection component 3, correspondingly, the inside of the inner surface of light detection shell 1 and light detection shell 1 is all provided with It is equipped with the bulge-structure 14 for light intensity of decaying, for example, as shown in figure 3, on the inner surface of hood 12 and hood 12 are internally provided with bulge-structure 14.

Wherein, the bulge-structure 14 on the inner surface of light detection shell 1 makes the strong of light for making light that diffusing reflection occur Light of the bulge-structure 14 for the transmitting of shading light emitting component 2 is arranged in degree decaying, the inside of light detection shell 1.

In an implementation, as shown in figure 3, the bulge-structure 14 on the inner surface of hood 12 can be along hood 12 Short transverse setting is convex to internal dentalation.The inside setting of hood 12 can be in bulge-structure 14 to be vertically arranged Plate structure in the cover 121 of hood 12, for example, it may be the plate structure etc. of bending.Wherein, the surface of pedestal 13 On multiple bulge-structures 14 also can be set so that diffusing reflection can occur for the light in light detection shell 1.

As shown in Figure 1, the inside of the light detection shell 1 of the sense smoke sensor is equipped with light emitting component 2 and optical detection Component 3, light emitting component 2 are corresponding with the installation site of optical detection component 3.For example, the transmitting of light emitting component 2 Angle between the central axis of the reception light of the central axis and optical detection component 3 of light can have between 0 to 90 degree The sense smoke sensor of this angled relationships is properly termed as forward sense smoke sensor, if angle is greater than 90 degree, is properly termed as Formula sense smoke sensor backward, the present embodiment is without limitation, can be with forward sense smoke sensor example.

In an implementation, as shown in Figure 1, the inside of light detection shell 1 can be set for installing light emitting component 2 First mounting box 6 and the second mounting box 7 for installing optical detection component 3, specifically, the first mounting box 6 may include One installation lid 61 and the first mounting base 62, as shown in figure 3, the first installation lid 61 is arranged on hood 12, as shown in figure 4, the One mounting base 62 is arranged on pedestal 13, and light emitting component 2 is mounted in the first mounting base 62, when hood 12 covers on pedestal When on 13, the first installation lid 61 also covers in the first mounting base 62 just, and in turn, light emitting component 2 is located at by the first installation In the first mounting box 6 that lid 61 and the first mounting base 62 are formed.It as shown in Figure 3 and Figure 4 can also similarly for the second mounting box 7 To include the second installation lid 71 being arranged on hood 12 and the second mounting base 72 being arranged on pedestal 13, optical detection member device Part 3 is mounted in the second mounting base 72, and when hood 12 covers on pedestal 13, the second installation lid 71 can also cover on just In second mounting base 72, in turn, optical detection component 3 is located at the second peace formed by the second installation lid 71 and the second mounting base 72 In mounted box 7.

Wherein, in order to which the inside for making the light for emitting the transmitting of component 2 be able to enter light detection shell 1 (that is to say dark The inside of room), correspondingly, through-hole is provided at position corresponding with light emitting component 2 on the first mounting box 6, so that light The light that transmitting component 2 issues is able to enter the inside of light detection shell 1.Wherein, the through-hole of the first mounting box 6 can be A part setting installs lid 61 first, and another part is arranged in the first mounting base 62, when the first installation lid 61 is mounted on the When in one mounting base 62, two parts of the through-hole of above-mentioned first mounting box 6 form a complete through-hole.Equally, in order to make light Detection component 3 can receive light, correspondingly, setting at position corresponding with optical detection component 3 on the second mounting box 7 It is equipped with through-hole, so that optical detection component 3 can receive light.Wherein, the through-hole of the second mounting box 7 is also possible to a part On the second installation lid 71, another part is arranged in the second mounting base 72 for setting, when the second installation lid 71 is mounted on the second peace When filling on seat 72, two parts of the through-hole of above-mentioned second mounting box 7 form a complete through-hole.

Optionally, the electromagnetic wave in order to prevent in environment penetrates light detection shell 1, visits to the light inside light detection shell 1 It surveys component 3 to interfere, correspondingly, as shown in Figure 1, sense smoke sensor further includes the screen matched with optical detection component 3 Cover 8 is covered, shielding case 8 is mounted in light detection shell 1；As shown in Figure 1, opposite with optical detection component 3 on the side wall of shielding case 8 The second through-hole 81 is provided at the position answered, optical detection component 3 is located in shielding case 8, and corresponding with the second through-hole 81.

In an implementation, optical detection component 3 is located in shielding case 8, and corresponding with the second through-hole 81 of shielding case 8, screen Covering cover 8 can be located in the second mounting box 7, and such shielding case 8 can will go into the electromagnetic wave shielding inside light detection shell 1 Fall, in turn, sense cigarette can be improved and pass to avoid the normal work of the Electromagnetic Interference optical detection component 3 in environment, in turn The accuracy of sensor.Wherein, the second through-hole 81 of shielding case 8 is corresponding with the through-hole of the second mounting box 7, in this way, working as light detection There are when smog inside shell 1, the light after smog scatters can pass through the through-hole and shielding case of the second mounting box 7 8 the second through-hole 81, is received by optical detection component 3.

It is the specific structure introduction to the light detection shell 1 of sense smoke sensor above, sense smoke sensor is explained below Conducting element 4:

As illustrated in fig. 1 and 2, the conducting element 4 of the sense smoke sensor is mounted on light detection shell 1, for example, being mounted on light inspection The top for surveying shell 1, specifically, as shown in Fig. 2, light emitting component 2, optical detection component 3 and hood 12 are installed in On pedestal 13, emits component 2 and optical detection component 3 is located in hood 12, conducting element 4 may be mounted at hood 12 In the cover 121；So, smog flow-guiding channel 5 can be between the cover 121 and conducting element 4, as shown in figure 3, first through hole 11 It can be set in the cover 121, smog flow-guiding channel 5 includes the first flow-guiding channel 51 and the second flow-guiding channel 52 being connected, Second flow-guiding channel 52 is connected with first through hole 11.

Wherein, conducting element 4 that is to say the component with guiding role, for example, being provided with diversion channel slot on conducting element 4, leading The structures such as flow tube road, smog flow-guiding channel can be formed between the conducting element 4 of diversion channel slot and the cover 121 of hood 12 by having 5, allow smog under the guiding role of smog flow-guiding channel 5, is introduced in the inside of light detection shell 1.

In an implementation, as described above, the first flow-guiding channel 51 can be lateral flow-guiding channel, that is to say, first leads Circulation road 51 is parallel to the cover 121 of hood 12.First flow-guiding channel 51 and the second flow-guiding channel 52 are crossed to form angle, should Angle may be within the scope of predetermined angle, for example, predetermined angle range may be greater than or be equal to 90 degree, and less than 180 Degree, for example, 180 degree can be much smaller than less times greater than 90 degree.It is to make smog fast less times greater than 90 degree Second flow-guiding channel 52 is entered by the first flow-guiding channel 51, then into the inside of light detection shell 1；It is much smaller than 180 degree In order to stop the light in environment to be irradiated in the second flow-guiding channel 52.

In an implementation, in order to make the smog in environment pass through the inside that smog flow-guiding channel 5 enters light detection shell 1, It is provided with first through hole 11 in the cover 121 of hood 12 at the position of corresponding second flow-guiding channel 52, first through hole 11 and the Two flow-guiding channels 52 are connected, in this way, mist flow-guiding channel 5 can be passed through light by the second flow-guiding channel 52 and first through hole 11 Detect the inside (that is to say in darkroom) of shell 1.

Optionally, conducting element 4 may include fairing cap 41 and baffle 42, and baffle 42 is vertically mounted on fairing cap 41 and leans on On the surface of nearly hood 12, and baffle 42 is corresponding with the first through hole 11 on hood 12, and the first flow-guiding channel 51 can To be formed between fairing cap 41 and the cover 121 of hood 12, the second flow-guiding channel 52 be can be set on baffle 41.

Wherein, baffle 42 can have column structure, it is possible to have round-like structure is vertically mounted on fairing cap 41 On, for example, baffle 42 can be mounted on the center of fairing cap 41 by way of gluing, the side of screw can also be passed through Formula installation can also be such that fairing cap 41 and baffle 42 is integrally formed by way of injection molding.

In an implementation, conducting element 4 as described above is mounted on the top of hood 12, and corresponding fairing cap 41 also is located at screening The top of light shield 12, the shape and size of fairing cap 41 can be adapted with the shape of hood 12 and size.For example, hood 12 have tubular structure, and the cover 121 of hood 12 has disk-shaped structure, correspondingly, fairing cap 41 also can have plectane The radius of shape structure, fairing cap 41 can be equal with the radius of the cover 121.

In order to form the first flow-guiding channel 51 on fairing cap 41, correspondingly, fairing cap 41 is close to the surface of hood 12 On multiple grooves can be set as the first flow-guiding channel 51, alternatively, as shown in figure 5, fairing cap 41 close to hood 12 table Multiple deflectors 43 can also be set on face, form the first flow-guiding channel 51 between two neighboring deflector 43.In this way, first leads Circulation road 51 can be closed channel, left and right sidewall of the two neighboring deflector 43 as the first flow-guiding channel 51, fairing cap 41 and the cover 121 be used as top and bottom sidewall.

Equally, in order to form the second flow-guiding channel 52 on baffle 42, correspondingly, baffle 42 is along in short transverse Multiple grooves can be set as the second flow-guiding channel 52, alternatively, as shown in figure 5, baffle 42 is along can be in short transverse Multiple bar shaped teeth 44 are set, form the second flow-guiding channel 52 between two neighboring bar shaped tooth 44.

Wherein, it as shown in figure 5, deflector 43 can be the plate of strip, is vertically set on fairing cap 41, for example, can It is arranged on fairing cap 41 in a manner of through gluing or injection molding, this multiple 43 shape and size of deflector can be all the same, It is uniformly distributed on the surface of fairing cap 41.

Optionally, light is received after the center position of light detection shell 1 scatters by optical detection component 3 Probability is bigger, correspondingly, as shown in figure 3, the first through hole 11 in the cover 121 of hood 12 can be set in the cover 121 Center position.It is connected again due to the second flow-guiding channel 52 with first through hole 11, it is logical that the second water conservancy diversion is set on baffle 42 Road 52, therefore the position of baffle 42 is corresponding with the position of first through hole 11, correspondingly, as shown in figure 5, baffle 42 can pacify Mounted in the center position of fairing cap 41.For example, as shown in figure 5, the first flow-guiding channel 51 is uniform on the surface of fairing cap 41 Distribution, baffle 42 are located in the enclosing region of multiple first flow-guiding channels 51 formation.

Wherein, the first flow-guiding channel 51 is connected with the second flow-guiding channel 52, and distribution is corresponding, for example, the first water conservancy diversion The quantity of channel 51 and the second flow-guiding channel 52 be all it is multiple, first flow-guiding channel 51 is corresponding with second flow-guiding channel 52, alternatively, as shown in figure 5, two the first flow-guiding channels 51 are corresponding with second flow-guiding channel 52 etc..

Optionally, in order to avoid convection current occurs between corresponding first flow-guiding channel 51, and so that smog is not entered second and lead In circulation road 52, correspondingly, the height of the second flow-guiding channel 52 is more than or equal to the height of the first flow-guiding channel 51, for example, The height of baffle 42 is more than or equal to the height of deflector 43.In this way, due to the blocking of the second flow-guiding channel 52, position phase Pair the first flow-guiding channel 51 between just cannot form convection current, in turn, make the smog entered in the first flow-guiding channel 51 can It enough enters in the second flow-guiding channel 52.

Optionally, in order to enhance the guiding role of the second flow-guiding channel 52, correspondingly, as shown in figure 5, the second flow-guiding channel 52 be the slanted channel of slide shape.

In an implementation, baffle 42 can have frustum cone structure, and one end of the close fairing cap 41 of frustum cone structure (might as well claim For first end) diameter be greater than close to hood 12 one end (second end might as well be known as) diameter, in this way, the second flow-guiding channel 52 is have acclive channel, and the surface where the surface of channel is curved surface, form the slanted channel of slide shape.Wherein, such as Shown in Fig. 5, the baffle 42 of the slanted channel of slide shape is provided with similar to a volcano, therefore is referred to as volcano shape water conservancy diversion Body.When baffle 42 has cylindrical-shaped structure or other column structures, by the way that the shape of bar shaped tooth 44 is arranged, it can also be formed Baffle 42 with sliding trapezoidal channel.

Optionally, conducting element 4 is mounted on hood 12, for example, can be connected by a snap, can also be connected by screw It connects, it can also be in mating connection etc. by positioning column and positioning hole.

In an implementation, it specifically can be by positioning column and positioning hole mode in mating connection, as shown in figure 5, water conservancy diversion Multiple positioning columns 45 are provided on lid 41, as shown in fig. 6, hood 12 is provided with multiple and is determined on the surface of fairing cap 41 The location hole 122 that position column 45 matches, conducting element 4 are matched with location hole 122 by positioning column 45 and are mounted on hood 12. As shown in figure 5, there are three positioning columns 45, positioning column 45 can be set on deflector 43 for setting on fairing cap 41, three positioning Angle between column 45 is 120 degree, in order to match with three positioning columns 45, as shown in fig. 6, on hood 12 there are three settings Location hole 122.

Optionally, in order to avoid in environment winged insect or dust etc. light detection shell is entered by smog flow-guiding channel 5 The inside of body 1, can be accordingly, such as Fig. 6 and refering to what is shown in Fig. 1, corresponding to first through hole 11 in the cover 121 of hood 12 Filter screen 9 is installed at position.

Wherein, the shape of the mesh of filter screen 9 can be circle, be also possible to hexagon, can also be the shapes such as octagon Shape, the present embodiment are without limitation.

In an implementation, conducting element 4 is excessive close to the surface of hood 12 and the distance between filter screen 9, may make position It sets the first opposite flow-guiding channel 51 and convection current occurs, and if apart from too small, it may not be possible to it can smoothly enter into smog to second and lead In circulation road 52.So in order to enter smog relatively smoothly efficiently in the second flow-guiding channel 52, correspondingly, conducting element 4 The distance between filter screen 9 is the first default value.For example, baffle 42 close to hood 12 surface and filter screen 9 it Between distance be the first default value, which can be according to theoretical calculation and multiple repetition test Depending on.

Wherein, sense smoke sensor in order to facilitate processing, correspondingly, the fairing cap 41 of conducting element 4, baffle 42, water conservancy diversion Plate 43, bar shaped tooth 44 and positioning column 45 can be processed into integrated formed structure by way of injection molding；It is convex in hood 12 Side structure 14, first installs lid 61 and the second installation lid 71 can be processed into integrated formed structure by way of injection molding；Bottom Chimb 131, light-blocking chimb 132, the first mounting base 62, the second mounting base 72 and the buckle of seat 13 can also pass through the side of injection molding Formula is processed into integrated formed structure.The efficiency of production sense smoke sensor can be improved in the technology mode of injection molding.

Based on feeling described in above structure, that smog water conservancy diversion is formed between the conducting element 4 of smoke sensor and light detection shell 1 is logical Road 5, and the smog flow-guiding channel 5 includes the first flow-guiding channel 51 and the second flow-guiding channel 52, and the second flow-guiding channel 52 passes through First through hole 11 on light detection shell 1 is passed through the inside of light detection shell 1.In this way, in the case where no smog, in environment Even if light entered in smog flow-guiding channel 5 by the first flow-guiding channel 51, but during light is propagated, due to Light is along straightline propagation in air, and not point-blank, therefore light cannot for the first flow-guiding channel 51 and the second flow-guiding channel 52 It is entered in the second flow-guiding channel 52 by the first flow-guiding channel 51, and then the light in environment can not enter light detection shell 1 inside, therefore the light in environment cannot be received by optical detection component 3, in turn, avoid the generation of smoke detection alarm False alarm.

When feeling the generation kindling generation smog of environment locating for smoke sensor, smog can be in the first flow-guiding channel 51 It under guide functions, enters in smog flow-guiding channel 5, under the guide functions of the second flow-guiding channel 52, passes through first through hole 11 Enter the inside of light detection shell 1.The light that light emitting component 2 emits encounters smog and scatters, after scattering Light can be received by optical detection component 3, and the optical signal received is converted to electric signal by optical detection component 3, and It is sent to the wiring board of smoke detection alarm, wiring board judges the intensity of light, if detecting the intensity of light More than preset threshold, then the warning piece for controlling smoke detection alarm is alarmed.

Based on described above, the sense smoke sensor with above structure both can stop the light in environment to enter light The inside of shell 1 is detected, and the smog in environment can be made smoothly efficiently to enter the inside of light detection shell 1.

In the embodiments of the present disclosure, which includes light detection shell, light emitting component, optical detection component And conducting element, in which: conducting element is mounted on light detection shell, and light emitting component and optical detection component are mounted on light detection In shell, first through hole is provided on light detection shell；Smog flow-guiding channel, cigarette are formed between conducting element and light detection shell Mist flow-guiding channel includes the first flow-guiding channel and the second flow-guiding channel being connected, and the second flow-guiding channel is connected with first through hole It is logical.In the case where no smog, though the light in environment is entered in smog flow-guiding channel by the first flow-guiding channel, but It is since light is in air along straightline propagation, and the first flow-guiding channel and the second flow-guiding channel are not point-blank, therefore light Line cannot be entered in the second flow-guiding channel by the first flow-guiding channel, and then the light in environment can not be logical by the second water conservancy diversion Road enters the inside of light detection shell, therefore cannot be received by optical detection component, in turn, avoids smoke detection alarm False alarm occurs.

The present embodiment additionally provides a kind of smoke detection alarm, which includes wiring board, shell, report Alert component and sense smoke sensor described above, in which: sense smoke sensor, warning piece and wiring board installation are in the shell.

Wherein, be equipped on wiring board processing component (such as chip), processing component by winding displacement respectively with warning piece and Feel the light emitting component in smoke sensor, optical detection component is electrically connected.

In an implementation, for the inside that the smog for making environment is able to enter sense smoke sensor, correspondingly, being arranged on shell There is channel, so that smog enters the inside of sense smoke sensor by channel.

The sense smoke sensor of the smoke detection alarm is as described above, may include light detection shell, light emitting member device Part, optical detection component and conducting element, in which: conducting element is mounted on light detection shell, light emitting component and optical detection member Device is mounted in light detection shell, is provided with first through hole on light detection shell；It is formed between conducting element and light detection shell There is smog flow-guiding channel, smog flow-guiding channel includes the first flow-guiding channel and the second flow-guiding channel being connected, and the second water conservancy diversion is logical Road is connected with first through hole.In the case where no smog, even if the light in environment is entered by the first flow-guiding channel In smog flow-guiding channel, but since light is in air along straightline propagation, and the first flow-guiding channel and the second flow-guiding channel are not Point-blank, therefore light cannot be entered in the second flow-guiding channel by the first flow-guiding channel, and then the light in environment The inside of light detection shell cannot be entered by the second flow-guiding channel, therefore cannot be received by optical detection component, in turn, kept away Smoke detection alarm is exempted from and false alarm occurs.

The foregoing is merely the preferred embodiments of the application, not to limit the application, it is all in spirit herein and Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this application.

Claims (13)

1. a kind of sense smoke sensor, which is characterized in that the sense smoke sensor includes light detection shell (1), light emitting component (2), optical detection component (3) and conducting element (4), in which:

Conducting element (4) is mounted on light detection shell (1), and light emitting component (2) and optical detection component (3) are mounted on light inspection It surveys in shell (1), first through hole (11) is provided on light detection shell (1)；

It is formed between conducting element (4) and light detection shell (1) smog flow-guiding channel (5), smog flow-guiding channel (5) includes being connected Logical the first flow-guiding channel (51) and the second flow-guiding channel (52), between the first flow-guiding channel (51) and the second flow-guiding channel (52) Angle within the scope of predetermined angle, the second flow-guiding channel (52) is connected with first through hole (11).

2. sense smoke sensor according to claim 1, which is characterized in that light detection shell (1) include hood (12) and Pedestal (13)；

Light emitting component (2), optical detection component (3) and hood (12) are installed on pedestal (13), light emitting member device Part (2) and optical detection component (3) are located in hood (12), and conducting element (4) is mounted on the cover (121) of hood (12) On；

Smog flow-guiding channel (5) is located between the cover (121) and conducting element (4), and first through hole (11) is arranged in the cover (121) On.

3. sense smoke sensor according to claim 2, which is characterized in that conducting element (4) includes fairing cap (41) and water conservancy diversion Body (42)；

Fairing cap (41) is mounted on the cover (121), and baffle (42) is mounted on the surface of fairing cap (41) close to the cover (121) On, and it is corresponding with first through hole (11)；

It is formed between fairing cap (41) and the cover (121) the first flow-guiding channel (51), the second flow-guiding channel (52) is arranged in water conservancy diversion On body (42).

4. sense smoke sensor according to claim 2, which is characterized in that conducting element (4) includes fairing cap (41), fairing cap (41) it is mounted on the cover (121)；

Fairing cap (41) close to the cover (121) surface on be provided with multiple deflectors (43), two neighboring deflector (43) it Between form the first flow-guiding channel (51).

5. sense smoke sensor according to claim 4, which is characterized in that conducting element (4) further includes the water conservancy diversion of column structure Body (42), baffle (42) are mounted on fairing cap (41) on the surface of the cover (121), and opposite with first through hole (11) It answers；

Baffle (42) is provided with multiple bar shaped teeth (44) along short transverse, forms second between two neighboring bar shaped tooth (44) Flow-guiding channel (52).

6. sense smoke sensor according to claim 5, which is characterized in that the height of baffle (42), which is more than or equal to, to be led The height of flowing plate (43).

7. sense smoke sensor according to claim 5, which is characterized in that the second flow-guiding channel (52) is the logical of slide shape Road.

8. sense smoke sensor according to claim 2, which is characterized in that corresponding the in the cover (121) of hood (12) Filter screen (9) are installed at the position of one through-hole (11).

9. sense smoke sensor according to claim 8, which is characterized in that the distance between conducting element (4) and filter screen (9) For the first default value.

10. sense smoke sensor according to claim 2, which is characterized in that be arranged at marginal position on pedestal (13) Have a light-blocking chimb (132) perpendicular to pedestal (13), light-blocking chimb (132) is located in hood (12), light-blocking chimb (132) with Spacing between hood (12) is the second default value.

11. sense smoke sensor according to claim 1, which is characterized in that feeling smoke sensor further includes and optical detection member device The shielding case (8) that part matches, shielding case (8) are mounted in light detection shell (1)；

The second through-hole (81), optical detection are provided on the side wall of shielding case (8) at position corresponding with optical detection component (3) Component (3) is located in shielding case (8).

12. -11 described in any item sense smoke sensors according to claim 1, which is characterized in that the interior table of light detection shell (1) The bulge-structure (14) being internally provided with for light intensity of decaying in face and light detection shell (1).

13. a kind of smoke detection alarm, which is characterized in that the smoke detection alarm includes wiring board, shell, alarm department Part and the described in any item sense smoke sensors of claim 1-12, in which:

The sense smoke sensor, the warning piece and wiring board installation are in the housing.