CN209248721U

CN209248721U - Labyrinth type optical detector

Info

Publication number: CN209248721U
Application number: CN201822063418.3U
Authority: CN
Inventors: 吴雪丹
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-10
Filing date: 2018-12-10
Publication date: 2019-08-13
Anticipated expiration: 2028-12-10

Abstract

Labyrinth type optical detector disclosed in the utility model, it is characterized in that, including top plate and bottom plate, the bottom surface annular array of top plate is provided with multiple grids in long word shape, and in the right side arc panel insertion of each grid and grid left side recessed portion adjacent on the right side of it；The airflow channel of irregular repeatedly bending shape is respectively formed at left and right sides of each grid, for inputting outside air；The bottom of grid is fixed with bottom plate；Photo-electric detection device is installed on bottom plate, multiple grids are enclosed and set the detection cavity to be formed progress air detection, airflow channel is connected to detection cavity, and ambient light enters detection cavity after airflow channel at least four secondary reflections, and airflow channel width is more than or equal to 1.5 millimeters.Its structure reduces ambient light and interferes the optical detection of photo-electric detection device, promotes detection precision so that in smoldering fire quick detection respond.

Description

Labyrinth type optical detector

Technical field

The utility model relates to a kind of smoke detector technical fields, especially labyrinth type optical detector.

Background technique

Photo-electric type smoke detector is by top plate and bottom plate, photo-electric detection device and between bottom plate and top plate at present Grid is constituted, and constitutes airflow channel by grid, but airflow channel is usually that straight channel or V-shape channel, ambient light are straight Tap into or only entered in detection cavity through two secondary reflections, thus ambient light consumed in airflow channel it is less, therefore intensity compared with High light, which enters in detection cavity, causes the interference of the optical detection to photo-electric detection device larger, so that the precision of detection is lower, It quick detection can not be responded in smoldering fire.

Summary of the invention

A kind of reduction ambient light designed purpose of the utility model is to solve the deficiency of above-mentioned technology is to photoelectricity The optical detection of formula detection device is interfered, and detection precision is promoted, so that in the labyrinth type that quick detection responds in smoldering fire Optical detector.

Labyrinth type optical detector designed by the utility model, including top plate and bottom plate, the bottom surface annular array of top plate It is provided with multiple grids in long word shape, and the right side arc panel insertion of each grid and grid left side adjacent on the right side of it In recessed portion；The airflow channel of irregular repeatedly bending shape is respectively formed at left and right sides of each grid, for inputting Outside air；The bottom of grid is fixed with bottom plate；Photo-electric detection device is installed on bottom plate, multiple grids are enclosed to set to be formed Detection cavity carries out air detection, and airflow channel is connected to detection cavity, and ambient light enters after airflow channel at least four secondary reflections to be visited Chamber is surveyed, airflow channel width is more than or equal to 1.5 millimeters.

Further preferably, photo-electric detection device includes two transmitters, a receiver and slanting baffle, two transmittings Device, a receiver and slanting baffle inclination are installed on bottom plate, and the height of head of transmitter two is below the head of transmitter one The height of head of height and receiver, two transmitters, a receiver triangular shape are distributed on bottom plate, receiver and hair Included angle is obtuse angle between emitter two, and the included angle between transmitter two and transmitter one is acute angle, receiver monitoring The light that two transmitters are emitted；Between receiver and transmitter two, bottom end is located at transmitter one on the top of slanting baffle Emitting head lower left；There are three installations corresponding with the position of two transmitters and a receiver respectively for the side tool of detection cavity The side opening of slot one, mounting groove one is connected to detection cavity；Two transmitters and a receiver are separately mounted to three mounting grooves In one, the head of transmitter and receiver is set to the side opening position of mounting groove one；Slanting baffle height be higher than two transmitters and The launch hole of receiver, for directly blocking the detection light of two transmitters to the bar path of receiver.Which solve existing Photo-electric type smoke detector is reflected when a branch of detection light passes through smog by smoke particle based on langbobier law in technology Or scatter in some angle of scattering, the intensity of light is measured by photoelectric sensor, and the relative concentration of smog is measured with this. It when the concentration of smog gradually aggravates, just has more light and is reflected on photoelectric sensor, its is made to export electric signal Amount reaches setting alarm threshold value, and detector issues fire alarm signal.Obviously, there are many substances that can cause to reflect or scatter, The output electric signal amount of photoelectric sensor is set to reach setting alarm threshold value, such as small insect, hair, spider silk, dust, dust, Oil smoke, steam (salt fog), the interference sources such as dust (suspended particulate) cause a large amount of false alarm of detector, the extremely low skill of accuracy Art problem.And by two emitters and a reception device, separately constitute two angle of scatterings (transmitting tube central optical axis with The in-plane scatter angle that reception pipe central optical axis is constituted), one 30 degree and one 90 degree, to identify partial size, shape and the folding of particle Penetrate rate, such as dust, dust, oil smoke, steam (salt fog), dust (suspended particulate), smog etc.；Meanwhile centre uses a baffle, Highly slightly higher 3 loopholes of mistake directly block the detection light of two emitters to the bar path of photoelectric sensor, secondly, Luminous directional reflectance is detected in inside, makes its consumption, reduces the interference to photoelectric sensor.

Further preferably, the central axis of the included angle between the central axis and plate top surface of transmitter one and receiver Included angle between line and plate top surface is consistent；Included angle between the central axis and plate top surface of transmitter two is less than Included angle between the central axis and plate top surface of receiver.

Further preferably, the central axis of the included angle between the central axis and plate top surface of transmitter one and receiver Included angle between line and plate top surface is 15 °；Included angle between the central axis and plate top surface of transmitter two It is 14.5 °.

Further preferably, two transmitters, a receiver are installed on bottom plate, specific mounting structure: bottom plate includes Upper plate and lower plate, are arranged three positioning seats one corresponding with two transmitters, the position of a receiver respectively in lower plate, and three It is the locating slot one on inclined-plane that the top surface of positioning seat one, which has bottom surface, and through slot one, two transmittings are all had on front side of three locating slots one Device, receiver difference tiltably-mounted are in locating slot one, before two transmitters, the head of receiver and through slot one Port is corresponding, and the connection pin of transmitter and receiver sequentially passes through after the slot bottom of locating slot one from lower plate stretching；The bottom of upper plate Mask fluted one, top surface have three positioning sleeves one corresponding with three one positions of positioning seat respectively, and lower plate insertion is fixed In groove one, positioning seat is inserted into positioning sleeve one after always wearing plate, and transmitter and receiver are separately mounted to locating slot One and positioning sleeve one be combined with each other in positioning chamber one, the front side of positioning sleeve one has the corresponding loophole one in one position of through slot；Tiltedly Baffle plate setting is in the top surface of upper plate.

Further preferably, positioning seat one and lower plate, which be combined with each other, is integrally formed formula structure；Positioning sleeve one, slanting baffle with it is upper Plate, which be combined with each other, is integrally formed formula structure.

Further preferably, photo-electric detection device includes two transmitters, a receiver and two pieces of slanting baffles, and two tiltedly keep off Plate is inclined on bottom plate, and the left side of head of a slanting baffle is located at the head upper side position of transmitter one, right side of head position In the left side of head of transmitter two, the upside optical axis of transmitter one and the left side optical axis of transmitter two are blocked；Another slanting baffle Between on the upside of the right side of head of transmitter two and the head of receiver, receiver monitors the light that transmitter one emits, transmitting The light that device two emits is monitored after passing through between two slanting baffles by receiver；Two transmitters, a receiver are transversely and horizontally pacified Loaded on bottom plate, two transmitters, a receiver triangular shape are distributed on bottom plate, transmitter one and transmitter two it Between included angle be acute angle, the included angle before transmitter two and receiver is right angle；There are three divide for the side tool of detection cavity Mounting groove two not corresponding with the position of two transmitters and a receiver, the side opening of mounting groove two are connected to detection cavity； Two transmitters and a receiver are separately mounted in three mounting grooves two, and the head of transmitter and receiver is set to mounting groove Two side opening position.Which solve photo-electric type smoke detectors in the prior art to be based on langbobier law, when a branch of detection When light passes through smog, is reflected or scattered in some angle of scattering by smoke particle, the strong of light is measured by photoelectric sensor Degree, the relative concentration of smog is measured with this；When the concentration of smog gradually aggravates, just has more light and be reflected On photoelectric sensor, so that it is exported electric signal amount and reach setting alarm threshold value, detector issues fire alarm signal；Obviously, have Many substances can cause to reflect or scatter, and so that the output electric signal amount of photoelectric sensor is reached setting alarm threshold value, such as small Insect, hair, spider silk, dust, dust, oil smoke, steam (salt fog), the interference sources such as dust (suspended particulate) cause detector A large amount of false alarm, the extremely low technical problem of accuracy.And by two emitters and a reception device, separately constitute Two angle of scatterings (the in-plane scatter angle that transmitting tube central optical axis and reception pipe central optical axis are constituted), one 30 degree and one 90 Degree, to identify partial size, shape and the refractive index of particle, such as dust, dust, oil smoke, steam (salt fog), dust (suspended particulate), Smog etc.；Meanwhile it is intermediate using two baffles, slightly higher three loopholes of mistake of height directly block the detection of two emitters The bar path of light to photoelectric sensor makes its consumption secondly, luminous directional reflectance is detected in inside, reduces to photoelectric sensor Interference.

Further preferably, two transmitters, a receiver are installed on bottom plate, specific mounting structure: bottom plate includes Upper plate and lower plate, are arranged three positioning seats two corresponding with two transmitters, the position of a receiver respectively in lower plate, and three It is the locating slot two of parallel surface that the top surface of positioning seat two, which has bottom surface, and through slot two, two hairs are all had on front side of three locating slots two Emitter, a receiver are transversely and horizontally placed in locating slot two respectively, two transmitters, the head of receiver and through slot Two front port is corresponding, and the connection pin of transmitter and receiver sequentially passes through after the slot bottom of locating slot two from lower plate stretching；On The bottom surface of plate has groove two, and top surface has three positioning sleeves two corresponding with three two positions of positioning seat respectively, and lower plate is embedding Enter to be fixed in groove two, positioning seat two is inserted into positioning sleeve two after running through lower plate, and transmitter and receiver are separately mounted to Locating slot two and positioning sleeve two be combined with each other in positioning chamber two, and the front side of positioning sleeve two has light transmission corresponding with two position of through slot Hole two；The top surface of upper plate is arranged in slanting baffle.

Further preferably, positioning seat two and lower plate, which be combined with each other, is integrally formed formula structure；Positioning sleeve two, slanting baffle with it is upper Plate, which be combined with each other, is integrally formed formula structure.

Further preferably, grid be combined with each other with top plate is integrally formed formula structure.

Labyrinth type optical detector designed by the utility model, the air-flow that structure passes through irregular repeatedly bending shape Channel makes ambient light enter detection cavity after airflow channel at least four secondary reflections, to form light trapping, so that ambient light is more Be consumed in airflow channel, largely reduce the interference to photo-electric detection device, it is accurate further to promote detection Degree so that in smoldering fire quick detection respond.

Detailed description of the invention

Fig. 1 is the overall structure diagram of embodiment 1；

Fig. 2 is the structural schematic diagram (one) of grid on the top plate of embodiment 1；

Fig. 3 is the structural schematic diagram (two) of grid on the top plate of embodiment 1；

Fig. 4 is the whole configuration schematic diagram (one) of embodiment 2；

Fig. 5 is the structural schematic diagram (one) that transmitter and receiver are installed on the bottom plate of embodiment 2；

Fig. 6 is the structural schematic diagram (three) of grid on the top plate of embodiment 2；

Fig. 7 is the structural diagram of base plate (one) of the upper plate of embodiment 2；

Fig. 8 is the lower plate structure schematic diagram of embodiment 2；

Fig. 9 is the whole configuration schematic diagram (two) of embodiment 3；

Figure 10 is the structural schematic diagram (two) that transmitter and receiver are installed on the bottom plate of embodiment 3；

Figure 11 is the structural schematic diagram (four) of grid on the top plate of embodiment 3；

Figure 12 is the bottom surface structure schematic diagram (two) of the upper plate of embodiment 3.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art's every other embodiment obtained, all belongs to In the range of the utility model protection.

Embodiment:

As shown in Figure 1-Figure 3, labyrinth type optical detector described in the present embodiment, including top plate 1 and bottom plate 2, top plate 1 Bottom surface annular array be provided with multiple grids 11 in long word shape, and the right side arc panel insertion of each grid 11 and its In the adjacent 11 left side recessed portion of grid in right side；The left and right sides of each grid 11 is respectively formed with irregular repeatedly bending shape The airflow channel 111 of shape, for inputting outside air；The bottom of grid 11 and bottom plate 2 are fixed；Photo-electric is installed on bottom plate 2 Detection device, encloses multiple grids 11 and sets the detection cavity 13 to be formed progress air detection, and airflow channel 111 and detection cavity 13 connect Logical, ambient light enters detection cavity 13 after airflow channel 111 at least four secondary reflections, and 111 width of airflow channel is more than or equal to 1.5 millis Rice or 2 millimeters or 111 width of airflow channel are also possible to be more than or equal to 3 millimeters.Photo-electric detection device detects entrance Intracavitary air is detected.

In the present embodiment, grid 11 be combined with each other with top plate 1 and is integrally formed formula structure.Its structure makes the assembling of detector It is more convenient, and the secured intensity of structure is higher.

In above structure on air motion path, arbitrary structures angle is not acute angle, between interstructural minimum Away from being both greater than equal to 1.5 millimeters, so that having lesser air drag.Long font grid, prevent external disturbance light from directly into Enter inside, 4 reflections is at least needed just to can enter.The arcuate structure of long font grating base orients internal detection light anti- It penetrates, makes its consumption in long font grid, reduce the interference to photoelectric sensor, relative interior detection light forms light trapping.

Embodiment 2:

As shown in Fig. 4-Fig. 8, labyrinth type optical detector described in the present embodiment, general configuration and embodiment 1 one Cause, but unlike the first embodiment: photo-electric detection device includes two transmitters 4,5, receivers 3 and a slanting baffles 6, Two transmitters, 4,5, receivers 3 and the inclination of slanting baffle 6 are installed on bottom plate 2, and the height of head of transmitter 25 is below The height of head of transmitter 1 and the height of head of receiver 3, two transmitters, 4,5,3 triangular shapes of receiver point It is distributed on bottom plate, included angle is obtuse angle between receiver 3 and transmitter 25, between transmitter 25 and transmitter 1 Included angle is acute angle, and receiver 3 monitors the light that two transmitters are emitted；The top of slanting baffle 6 is located at receiver 3 and transmitter Between 25, bottom end is located at the emitting head lower left of transmitter 1；There are three send out respectively with two for the side tool of detection cavity 13 The corresponding mounting groove 1 in the position of 4,5 and one receivers 3 of emitter, the side opening of mounting groove one are connected to detection cavity 13；Two 4,5 and one receivers 3 of a transmitter are separately mounted in three mounting grooves 1, and the head of transmitter 4,5 and receiver 3 is set In the side opening position of mounting groove 1；6 height of slanting baffle is higher than the launch hole of two transmitters 4,5 and receiver 3, for straight Connect the bar path for blocking the detection light of two transmitters 4,5 to receiver.

The light hole diameter 3mm of above-mentioned two transmitter, the intersection point to their central optical axis are equidistant 14.6mm, are received The incidence hole diameter 3mm of device；Stop reflected light caused by internal structure and scattering light, reduces the interference to photoelectric sensor； The plane that the central optical axis of transmitter one and the central optical axis of receiver are constituted is perpendicular to base plane；The center light of transmitting tube two Axis and reception pipe central optical axis are 94 degree in the projection angle of base plane；Optics labyrinth internal structure, including two transmitting dresses Set with a reception device, separately constitute two angle of scatterings (plane that transmitting tube central optical axis and reception pipe central optical axis are constituted Angle of scattering), θ 1 and θ 2.10 degree -50 of 1 range of θ degree, 70 degree -120 of 2 range of θ degree.

In above structure, solve the problems, such as that existing detector rate of false alarm height and accuracy are low.In incipient fire, smoke particle Become multiple scattering from single scattering, when particle passes through optics Y-maze test region, generates scattering light, the intensity of scattering light is Grain diameter, shape, refractive index, the function of the geometry of the wavelength and photoelectric sensor of light.In this structure basis, with rice Family name's scattering theory establishes stringent mathematical model and equation, solves to the light intensity in two angle of scatterings, confirms smoke particle Characteristic, to identify small insect, hair, spider silk, dust, dust, oil smoke, steam (salt fog), dust (suspended particulate) etc. The false alarm of detector is effectively reduced in interference source, improves the alarm accuracy of detector.The structure in optics labyrinth, due to smaller Air drag, in smoldering fire, have faster response speed.

In the present embodiment, in the included angle and receiver 3 between 2 top surface of central axis and bottom plate of transmitter 1 Included angle between mandrel line and 2 top surface of bottom plate is consistent；Angle between 2 top surface of central axis and bottom plate of transmitter 25 Angle is less than the included angle between 2 top surface of central axis and bottom plate of receiver 3；The central axis and bottom plate 2 of transmitter 1 Included angle between 2 top surface of central axis and bottom plate of included angle between top surface and receiver 3 is 15 °；Transmitter Included angle between 252 top surface of central axis and bottom plate is 14.5 °.Its structure makes receiver by the difference of angle Accurately monitoring identification.

In the present embodiment, two transmitters, 4,5, receivers 3 are installed on bottom plate 2, specific mounting structure: bottom plate 2 include upper plate 21 and lower plate 22, and the position corresponding three with two transmitters, 4,5, receivers 3 respectively is arranged in lower plate 22 A positioning seat 1, it is the locating slot 1 on inclined-plane, three locating slots one that the top surface of three positioning seats 1, which has bottom surface, 2211 front sides all have through slot 1, and two transmitters, 4,5, receivers 3 distinguish tiltably-mounted in locating slot 1 Interior, the head of two transmitters, 4,5, receivers 3 is corresponding with the front port of through slot 1, transmitter 4,5 and receiver 3 Connection pin sequentially pass through the slot bottom of locating slot 1 after stretched out from lower plate 22；The bottom surface of upper plate 21 has groove 1, Its top surface has three positioning sleeves 1 corresponding with three one 221 positions of positioning seat respectively, and the insertion of lower plate 22 is fixed on groove In one 212, positioning seat 1 is inserted into positioning sleeve 1 after running through lower plate, and transmitter 4,5 and receiver 3 are separately mounted to Locating slot 1 and positioning sleeve 1 be combined with each other and in the positioning chambers one that constitute, and the front side of positioning sleeve 1 has through slot The corresponding loophole 1 in one 2212 positions；The top surface of upper plate 21 is arranged in slanting baffle 6.Its structure makes transmitter and reception The assembling of device is more convenient, and the detection device structure assembled is more compact reliable, promotes secured intensity.

In the present embodiment, positioning seat 1 and lower plate 22 be combined with each other and are integrally formed formula structure；Positioning sleeve 1, tiltedly gear Plate 6 be combined with each other with upper plate 21 and is integrally formed formula structure.Its structure makes the assembling of detector more convenient, and structure Secured intensity is higher.

Embodiment 3:

As shown in Fig. 9-Figure 12, labyrinth type optical detector described in the present embodiment, general configuration and embodiment 1 one Cause, but unlike the first embodiment: photo-electric detection device includes that photo-electric detection device includes two transmitter 4,5, one Receiver 3 and two pieces of slanting baffles 6, two slanting baffles 6 are obliquely installed on a base plate 2, and the left side of head of a slanting baffle 6 is located at transmitter One 4 head upper side position, right side of head are located at the left side of head of transmitter 25, the upside optical axis of transmitter 1 and transmitting The left side optical axis of device 25 is blocked；Another slanting baffle 6 is located at the right side of head of transmitter 25 and the head upside of receiver 3 Between, the light of 3 inductive transmitter 1 of receiver transmitting, the light that transmitter 25 emits between two slanting baffles 6 after passing through by receiving Device 3 incudes；Two transmitters, 4,5, receivers 3 are transversely and horizontally installed on bottom plate 2, two transmitter 4,5, one receptions 3 triangular shape of device is distributed on bottom plate 2, and included angle is acute angle, transmitter 25 between transmitter 1 and transmitter 25 It is right angle with the included angle before receiver 3；Detection cavity 13 side tool there are three respectively with two transmitters 4,5 and one The corresponding mounting groove 2 12 in the position of receiver 3, the side opening of mounting groove 2 12 are connected to detection cavity 13；Two transmitters 4,5 It is separately mounted in three mounting grooves 2 12 with a receiver 3, the head of transmitter and receiver is set to the side of mounting groove two Aperture position.

The light hole diameter 2.5mm-3mm of above-mentioned two transmitter, the intersection point to their central optical axis are equidistant 14mm, The incidence hole diameter 4mm of reception device；Stop reflected light caused by internal structure and scattering light, photoelectric sensor is done in reduction It disturbs；The plane that the central optical axis of transmitter one and the central optical axis of receiver are constituted is parallel to base plane；Inside optics labyrinth Structure, including two emitters and a reception device, separately constitute two angle of scatterings (transmitting tube central optical axis and reception pipes The in-plane scatter angle that central optical axis is constituted), θ 1 and θ 2.10 degree -50 of 1 range of θ degree, 70 degree -120 of 2 range of θ degree.

In the present embodiment, two transmitters, 4,5, receivers 3 are installed on bottom plate 2, specific mounting structure: bottom plate 2 include upper plate 23 and lower plate 24, and the position corresponding three with two transmitters, 4,5, receivers 3 respectively is arranged in lower plate 24 A positioning seat 2 241, it is the locating slot 2 2411 of parallel surface, three locating slots that the top surface of three positioning seats 2 241, which has bottom surface, 2 2411 front sides all have through slot 2 2412, and two transmitters, 4,5, receivers 3 are transversely and horizontally placed in locating slot respectively In 2 2411, the head of two transmitters, 4,5, receivers 3 is corresponding with the front port of through slot 2 2412,4,5 He of transmitter The connection pin of receiver 3 stretches out after sequentially passing through the slot bottom of locating slot 2 2411 from lower plate 24；The bottom surface of upper plate 23 has recessed Slot 2 232, top surface have three positioning sleeves 2 231 corresponding with three 2 241 positions of positioning seat respectively, and the insertion of lower plate 23 is solid It is scheduled in groove 2 232, positioning seat 2 241 is inserted into positioning sleeve 2 231 after running through lower plate 24, and transmitter 4,5 and receiver 3 It is separately mounted in the positioning chamber two that locating slot 2 2411 and positioning sleeve 2 241 be combined with each other, the front side of positioning sleeve 2 231 has Loophole 2 2311 corresponding with 2 2412 position of through slot；The top surface of upper plate 23 is arranged in slanting baffle 6.Its structure makes transmitter It is more convenient with the assembling of receiver, and the detection device structure assembled is more compact reliable, promotes secured intensity.

In the present embodiment, positioning seat 2 241 and lower plate 24 be combined with each other and are integrally formed formula structure；Positioning sleeve 2 231, tiltedly gear Plate 6 be combined with each other with upper plate 23 and is integrally formed formula structure.Its structure makes the assembling of detector more convenient, and structure Secured intensity is higher.

The utility model is not limited to above-mentioned preferred forms, anyone can obtain under the enlightenment of the utility model Other various forms of products, however, make any variation in its shape or structure, it is all that there is same as the present application or phase Approximate technical solution, all falls within the protection scope of the utility model.

Claims

1. a kind of labyrinth type optical detector, which is characterized in that including top plate and bottom plate, the bottom surface annular array of top plate is provided with Multiple grids in long word shape, and the right side arc panel insertion of each grid and grid left side recessed portion adjacent on the right side of it It is interior；The airflow channel of irregular repeatedly bending shape is respectively formed at left and right sides of each grid, for inputting extraneous sky Gas；The bottom of grid is fixed with bottom plate；Photo-electric detection device is installed on bottom plate, multiple grids are enclosed with the detection cavity for setting and being formed Air detection is carried out, airflow channel is connected to detection cavity, and ambient light enters detection cavity, gas after airflow channel at least four secondary reflections Circulation road width is more than or equal to 1.5 millimeters.

2. labyrinth type optical detector according to claim 1, which is characterized in that photo-electric detection device includes two hairs Emitter, a receiver and slanting baffle, two transmitters, a receiver and slanting baffle inclination are installed on bottom plate, transmitter Two height of head is below the height of head of transmitter one and the height of head of receiver, two transmitters, a receiver Triangular shape is distributed on bottom plate, and included angle is obtuse angle, transmitter two and transmitter between receiver and transmitter two Included angle between one is acute angle, and receiver monitors the light that two transmitters are emitted；The top of slanting baffle be located at receiver and Between transmitter two, bottom end is located at the emitting head lower left of transmitter one；Detection cavity side tool there are three respectively with two The corresponding mounting groove one in the position of transmitter and a receiver, the side opening of mounting groove one is connected to detection cavity；Two transmittings Device and a receiver are separately mounted in three mounting grooves one, and the side that the head of transmitter and receiver is set to mounting groove one is opened Mouth position；Slanting baffle height is higher than the launch hole of two transmitters and receiver, for directly blocking the detection of two transmitters Bar path of the light to receiver.

3. labyrinth type optical detector according to claim 2, which is characterized in that the central axis and bottom plate of transmitter one Included angle between the central axis and plate top surface of included angle and receiver between top surface is consistent；In transmitter two Included angle between mandrel line and plate top surface is less than the included angle between the central axis and plate top surface of receiver.

4. labyrinth type optical detector according to claim 3, which is characterized in that the central axis and bottom plate of transmitter one Included angle between the central axis and plate top surface of included angle and receiver between top surface is 15 °；Transmitter two Central axis and plate top surface between included angle be 14.5 °.

5. labyrinth type optical detector according to claim 2, which is characterized in that two transmitters, a receiver peace Loaded on bottom plate, specific mounting structure: bottom plate includes upper plate and lower plate, be arranged in lower plate respectively with two transmitters, one Corresponding three positioning seats one in the position of receiver, the top surface of three positioning seats one have bottom surface for the locating slot one on inclined-plane, and three Through slot one is all had on front side of a locating slot one, two transmitters, a receiver difference tiltably-mounted are in locating slot one, and two Transmitter, the head of a receiver are corresponding with the front port of through slot one, and the connection pin of transmitter and receiver sequentially passes through It is stretched out after the slot bottom of locating slot one from lower plate；The bottom surface of upper plate have groove one, top surface have respectively with three positioning seats one Corresponding three positioning sleeves one in position, lower plate insertion are fixed in groove one, and positioning seat is inserted into positioning sleeve one after always wearing plate It is interior, and transmitter and receiver are separately mounted to locating slot one and positioning sleeve one be combined with each other in positioning chamber one, positioning sleeve one Front side has the corresponding loophole one in one position of through slot；The top surface of upper plate is arranged in slanting baffle.

6. labyrinth type optical detector according to claim 5, which is characterized in that positioning seat one and lower plate be combined with each other structure Integrated structure；Positioning sleeve one, slanting baffle be combined with each other with upper plate and are integrally formed formula structure.

7. labyrinth type optical detector according to claim 1, which is characterized in that photo-electric detection device includes two hairs Emitter, a receiver and two pieces of slanting baffles, two slanting baffles are inclined on bottom plate, and the left side of head of a slanting baffle is located at hair The head upper side position of emitter one, right side of head are located at the left side of head of transmitter two, the upside optical axis and hair of transmitter one The left side optical axis of emitter two is blocked；Another slanting baffle is located at the right side of head of transmitter two and the head upside of receiver Between, receiver monitors the light that transmitter one emits, and the light that transmitter two emits is supervised after passing through between two slanting baffles by receiver It surveys；

Two transmitters, a receiver are transversely and horizontally installed on bottom plate, two transmitters, a receiver triangular shape It is distributed on bottom plate, included angle is acute angle between transmitter one and transmitter two, the folder before transmitter two and receiver Angle angle is right angle；There are three installations corresponding with the position of two transmitters and a receiver respectively for the side tool of detection cavity The side opening of slot two, mounting groove two is connected to detection cavity；Two transmitters and a receiver are separately mounted to three mounting grooves In two, the head of transmitter and receiver is set to the side opening position of mounting groove two.

8. labyrinth type optical detector according to claim 7, which is characterized in that two transmitters, a receiver peace Loaded on bottom plate, specific mounting structure: bottom plate includes upper plate and lower plate, be arranged in lower plate respectively with two transmitters, one Corresponding three positioning seats two in the position of receiver, it is the locating slot two of parallel surface that the top surface of three positioning seats two, which has bottom surface, Through slot two is all had on front side of three locating slots two, two transmitters, a receiver are transversely and horizontally placed in locating slot two respectively Interior, two transmitters, the head of a receiver are corresponding with the front port of through slot two, the connection pin of transmitter and receiver according to It is secondary to be stretched out after the slot bottom of locating slot two from lower plate；The bottom surface of upper plate has groove two, and top surface has fixed with three respectively Corresponding three positioning sleeves two in position two position of seat, lower plate insertion are fixed in groove two, and insertion is fixed after positioning seat two runs through lower plate In position set two, and transmitter and receiver are separately mounted to locating slot two and positioning sleeve two be combined with each other in positioning chamber two, positioning The front side of set two has loophole two corresponding with two position of through slot；The top surface of upper plate is arranged in slanting baffle.

9. labyrinth type optical detector according to claim 8, which is characterized in that positioning seat two and lower plate be combined with each other structure Integrated structure；Positioning sleeve two, slanting baffle be combined with each other with upper plate and are integrally formed formula structure.

10. labyrinth type optical detector according to claim 1, which is characterized in that grid and top plate be combined with each other composition Integral structure.