CN115875709A - Oil smoke sensor and kitchen appliance - Google Patents

Abstract

The invention discloses an oil smoke sensor and a kitchen appliance. The oil smoke sensor includes determine module and air circuit structure, and determine module includes light-emitting component and light receiving component, and light-emitting component is used for the transmission to detect the light, and light receiving component is used for receiving the detection light of light-emitting component transmission. The gas circuit structure is provided with a gas circuit channel, the axis of the light emitting assembly and the axis of the light receiving assembly are intersected in the gas circuit channel, the gas circuit channel comprises a gas inlet and a gas outlet, and the gas circuit structure is used for introducing gas flow to be detected from the gas inlet into the gas circuit channel and guiding the gas flow to be detected from the gas outlet. According to the oil smoke sensor and the kitchen appliance, the detection assembly is matched with the gas circuit structure, so that the detection assembly can calculate the concentration of particles of the gas flow to be detected by using the scattering effect of detection light under the condition that the gas flow to be detected passes through the gas circuit channel. Because the gas circuit structure can be with the air current leading-in that awaits measuring, reduces the requirement to the higher matching of kitchen appliance structure, so can be suitable for multiple model.

Description

Oil smoke sensor and kitchen appliance

Technical Field

The invention relates to the technical field of household appliances, in particular to an oil smoke sensor and a kitchen appliance.

Background

The oil smoke sensor in the correlation technique can detect the oil smoke concentration, and the oil smoke sensor in the correlation technique includes the oil smoke sensor that adopts near infrared ray form, and the oil smoke sensor can directly detect out the concentration of oil smoke, and the oil smoke sensor is generally installed in the oil net department of lampblack absorber, or the air intake region of fan, has higher matching requirement to the form of oil net or air intake, and the requirement is high to lampblack absorber structure cooperation, consequently is difficult to general lampblack absorber of different models.

Disclosure of Invention

The embodiment of the invention provides an oil smoke sensor and a kitchen appliance.

The lampblack sensor comprises a detection assembly and a gas circuit structure, wherein the detection assembly comprises a light emitting assembly and a light receiving assembly, the light emitting assembly is used for emitting detection light, and the light receiving assembly is used for receiving the detection light emitted by the light emitting assembly; the gas circuit structure is provided with a gas circuit channel, the axis of the light emitting component and the axis of the light receiving component are intersected in the gas circuit channel, the gas circuit channel comprises a gas inlet and a gas outlet, and the gas circuit structure is used for leading in the gas flow to be detected from the gas inlet into the gas circuit channel and leading out the gas flow to be detected from the gas outlet.

In some embodiments, the axis of the light emitting assembly is perpendicular to the axis of the light receiving assembly.

In some embodiments, the air passage channel includes a first air passage channel, a second air passage channel and a third air passage channel, the second air passage channel connects the first air passage channel and the third air passage channel, the axis of the light emitting component and the axis of the light receiving component intersect in the second air passage channel, the first air passage channel has the air inlet, and the third air passage channel has the air outlet.

In some embodiments, the axis of the light receiving assembly passes through the center of the second air passage channel.

In some embodiments, the first air passage is disposed obliquely downward relative to the second air passage, and the third air passage is disposed obliquely upward relative to the second air passage.

In some embodiments, the light emitting assembly includes a light emitting element, an emission fixing plate, and a hollow first sealing plug, the light emitting element is mounted on the emission fixing plate, two ends of the first sealing plug are respectively provided with a first opening and a second opening, one end of the first sealing plug is mounted on the emission fixing plate, the first opening accommodates the light emitting element, and the second opening faces the air passage channel; the light receiving assembly comprises a light receiving part, a receiving fixing plate and a hollow second sealing plug, the light receiving part is installed on the receiving fixing plate, a third opening and a fourth opening are respectively arranged at two ends of the second sealing plug, one end of the second sealing plug is installed on the receiving fixing plate, the third opening is contained in the light receiving part, and the fourth opening faces the air channel.

In some embodiments, the transmitting fixing plate and the receiving fixing plate are vertically disposed in space.

In some embodiments, the light emitting assembly includes a transmitting fixing base, the transmitting fixing plate and the first sealing plug are fixed on the transmitting fixing base, the transmitting fixing base is provided with a first light-transmitting hole, and the first light-transmitting hole is aligned with the second opening; the light receiving assembly comprises a receiving fixing seat, the receiving fixing plate and the second sealing plug are fixed on the receiving fixing seat, the receiving fixing seat is provided with a second light-transmitting hole, and the second light-transmitting hole is aligned to the fourth opening.

In some embodiments, a first groove is circumferentially formed in an inner wall of the first sealing plug, a first oil drainage groove is formed in the bottom of the inner wall of the first sealing plug, the first oil drainage groove is communicated with the first groove, the launching fixing seat is provided with a first oil drainage hole, and the first oil drainage hole is communicated with the first oil drainage groove; the inner wall circumference of second sealing plug is equipped with the second recess, the inner wall bottom of second sealing plug is equipped with second oil extraction groove, second oil extraction groove intercommunication the second recess, the second oil extraction hole has been seted up to the receiving fixing base, the second oil extraction hole with second oil extraction groove intercommunication.

The embodiment of the invention also provides a kitchen appliance, which comprises a box body, a fan assembly and the oil smoke sensor in any one of the embodiments. The fan assembly is installed in the box body and comprises a volute. The oil smoke sensor is arranged at the volute, and the air path channel is communicated with an oil smoke channel of an air outlet of the volute.

According to the oil smoke sensor and the kitchen appliance, the detection assembly is matched with the gas circuit structure, so that the detection assembly can calculate the concentration of particles of the gas flow to be detected by using the scattering effect of detection light under the condition that the gas flow to be detected passes through the gas circuit channel. Because the air path structure can be with the air current leading-in that awaits measuring, reduced the higher requirement of matching of kitchen appliance structure, so can be suitable for multiple model.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a kitchen appliance according to an embodiment of the present invention;

FIG. 2 is a schematic partial cross-sectional view of a kitchen appliance in accordance with an embodiment of the present invention;

FIG. 3 is an exploded view of a soot sensor according to an embodiment of the present invention;

fig. 4 is a schematic cross-sectional view of a soot sensor according to an embodiment of the present invention.

The main characteristic reference numbers:

the lampblack sensor 100, the detection assembly 10, the light emitting assembly 11, the light emitting piece 111, the emitting fixing plate 112, the first sealing plug 113, the first opening 1131, the second opening 1132, the emitting fixing seat 114, the light transmitting hole 115, the light receiving assembly 12, the light receiving piece 121, the receiving fixing plate 122, the second sealing plug 123, the third opening 1231, the fourth opening 1232, the receiving fixing seat 124, the air path structure 20, the air path channel 21, the air inlet 201, the air outlet 202, the first air path channel 211, the second air path channel 212, the third air path channel 213, the kitchen appliance 1000, the box 300, the fan assembly 500, the volute 510, the air outlet 511 and the lampblack channel 520.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and should not be construed as limiting the present invention.

In embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. The features defined as "first", "second" may explicitly or implicitly include one or more of the features described. In the embodiments of the present invention, "a plurality" means two or more, and is not limited herein.

In embodiments of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. The present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It is worth mentioning that the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize other processes and/or uses of other materials.

Referring to fig. 1 to 4, a smoke sensor 100 according to an embodiment of the present invention includes a detecting element 10 and an air path structure 20.

The detection member 10 includes a light emitting member 11 for emitting detection light and a light receiving member 12 for receiving the detection light emitted from the light emitting member 11.

The air path structure 20 is provided with an air path channel 21, the axis of the light emitting component 11 intersects with the axis of the light receiving component 12 in the air path channel 21, the air path channel 21 includes an air inlet 201 and an air outlet 202, and the air path structure 20 is used for introducing the air flow to be tested from the air inlet 201 to the air path channel 21 and guiding the air flow to be tested from the air outlet 202.

According to the lampblack sensor 100 provided by the embodiment of the invention, the detection assembly 10 is matched with the gas circuit structure 20, so that the detection assembly 10 can calculate the concentration of particles of the gas flow to be detected by using the scattering effect of detection light under the condition that the gas flow to be detected passes through the gas circuit channel 21. Because the air path structure 20 can guide in the air current to be measured, the requirement for high matching of the structure of the kitchen appliance 1000 is reduced, and the air path structure is suitable for various machine types.

Referring to fig. 1 and fig. 2 together, in particular, the smoke sensor 100 may be applied to a kitchen appliance 1000, where the kitchen appliance 1000 includes a range hood, and the range hood may be an upper range hood, a lower range hood, or a side range hood, which is not limited herein. The soot sensor 100 can directly detect the concentration of soot (airflow to be detected). The soot sensor 100 may be an infrared detection sensor or a laser detection sensor, and the like, and is not particularly limited herein. The oil smoke sensor 100 is used as an infrared detection sensor for detailed explanation, and the oil smoke sensor 100 is used as an infrared detection sensor for explanation, so as to facilitate understanding of implementation of the present invention, and should not be construed as limiting the present invention.

The lampblack sensor 100 comprises a gas path structure 20 and a detection assembly 10, wherein the gas path structure 20 and the detection assembly 10 can be matched with each other and spliced to form various shapes, and the shapes include but are not limited to cuboids, cubes and the like. It is worth mentioning that the cuboids and the cubes can facilitate the installation of the lampblack sensor 100 on the kitchen appliance 1000, can reduce the requirement of high matching of the structure of the kitchen appliance 1000, and thus can be suitable for various machine types and are more beautiful.

Referring to fig. 3 and 4, in particular, the soot sensor 100 includes a detection assembly 10, and the detection assembly 10 includes a light emitting assembly 11 and a light receiving assembly 12 whose axes intersect in an air path structure 20. The light emitting element 11 can emit detection light into the air passage channel 21, and the receiving element 12 can receive the detection light.

In one embodiment, the light emitting assembly 11 includes a light emitter that emits detection light toward the center of the air passage channel 21. The light receiving component 12 includes a sensor chip, and the sensor chip can collect and receive the detection light and output a light intensity signal, and the light intensity signal can be converted into an electrical signal, so that the concentration of the air flow to be detected in the air passage 21 can be fed back.

The lampblack sensor 100 comprises a gas circuit structure 20, and the gas circuit structure 20 can be matched with the detection assembly 10 to detect the concentration of the particles in the gas flow to be detected. The air path structure 20 and the detection assembly 10 may enclose an air path channel 21 shaped like a "C". The air path channel 21 includes an air inlet 201 and an air outlet 202, the relative position relationship between the air inlet 201 and the air outlet 202 is various, the arrangement position of the air inlet 201 and the arrangement position of the air outlet 202 may be symmetrically arranged, and the air inlet 201 and the air outlet 202 are oppositely arranged at two opposite ends of the air path channel 21. In some embodiments, the soot sensor 100 is disposed on a kitchen appliance 1000, the kitchen appliance 1000 includes a fan assembly 500, the fan assembly 500 includes a volute 510, and the volute 510 includes an air outlet 511. The air inlet 201 of the air passage 21 may be disposed near the air outlet 511; the air inlet 201 of the air channel 21 may also be connected to the air outlet 511, that is, the particulate matter of the air flow to be detected may enter the air channel 21 through the air inlet 201, so that the axis of the light emitting component 11 intersects with the axis of the light receiving component 12 in the air channel 21, and under the condition that the air flow to be detected passes through the air channel 21, the detection component 10 calculates the particulate matter concentration of the air flow to be detected by using the detection light scattering effect. The air flow to be detected in the air passage 21 can be discharged into the air outlet 511 again through the air outlet 202 and then discharged out of the kitchen appliance 1000; alternatively, the air flow to be measured in the air passage 21 may be directly discharged to the outside of the kitchen appliance 1000 through the air outlet 202, which is not limited herein.

In some embodiments, the axis of the light emitting assembly 11 is perpendicular to the axis of the light receiving assembly 12.

So set up, the contained angle that the axis of light emission subassembly 11 and the axis of light receiving component 12 are is 90 to intersect in gas circuit passageway 21, strengthen the detectivity to the interior particulate matter of the air current that awaits measuring, can accurately calculate the concentration of the interior particulate matter of air current that awaits measuring.

Specifically, the light receiving module 12 and the light emitting module 11 may be vertically disposed such that the axis of the light receiving module 12 is perpendicular to the axis of the light emitting module 11. In some embodiments, the axis of the light emitting assembly 11 and the axis of the light receiving assembly 12 may be disposed at a predetermined angle, which includes, but is not limited to, 60 °, 90 °, 120 °, 150 °, etc. It should be mentioned that, under the condition that the included angle between the axis of the light emitting component 11 and the light receiving component 12 is 90 °, the lampblack sensor 100 can be conveniently set to be a regular cube such as a cube or a cuboid, so that the lampblack sensor 100 can be conveniently installed and fixed.

Referring to fig. 3 and 4, in some embodiments, the air passage 21 includes three sub air passages, which may be a first air passage 211, a second air passage 212, and a third air passage 213.

The first air passage 211 includes an air inlet 201, and the third air passage 213 includes an air outlet 202. The second air passage channel 212 connects the first air passage channel 211 and the third air passage channel 213, and the axis of the light receiving assembly 12 and the axis of the light emitting assembly 11 intersect in the second air passage channel 212.

So set up, can be so that gas circuit channel 21's production is comparatively simple, forms a gas circuit channel 21 that link up and is convenient for wait to detect the inflow of air current and flow out, and the air current concentration that waits of second gas circuit channel 212 is higher simultaneously, is difficult to receive external influence, can guarantee sensitivity, the rate of accuracy that detects.

Specifically, first gas circuit passageway 211 is provided with air inlet 201, it can flow into first gas circuit passageway 211 through air inlet 201 to treat the air current, first gas circuit passageway 211 connects second gas circuit passageway 212, it can flow to second gas circuit passageway 212 through first gas circuit passageway 211 to treat the air current, and flow along the vertical upward direction of second gas circuit passageway 212 in second gas circuit passageway 212, second gas circuit passageway 212 communicates third gas circuit passageway 213, it can flow to third gas circuit passageway 213 through second gas circuit passageway 212 to treat the air current, third gas circuit passageway 213 is provided with gas outlet 202, it can flow out through gas outlet 202 to treat the air current so. The axis of the light receiving component 12 intersects with the axis of the light emitting component 11 in the second air channel 212, and the concentration of the air flow to be detected in the second air channel 212 is high, so that the detection component 10 is not easily influenced by the outside, and the detection is convenient.

In some embodiments, the axis of the light receiving component 12 passes through the center of the second air passage channel 212.

So set up, the axis of light receiving component 12 intersects in the center department of second gas circuit passageway 212 with the axis of light emitting component 11, and the gas flow concentration that awaits measuring of the center department of second gas circuit passageway 212 is higher, is difficult to receive external influence, can guarantee sensitivity, the rate of accuracy that detect.

Specifically, the airflow to be detected enters the first air channel 211 and escapes to the second air channel 212, the second air channel 212 is a main area through which the airflow to be detected mainly flows, and the particulate matters in the airflow to be detected generally move upwards, so that the value measured at the center of the second air channel 212 is more referential, and the concentration of the particulate matters can be reflected better. It is worth mentioning that the axis of the light emitting assembly 11 may perpendicularly intersect the axis of the light receiving assembly 12 at the center of the second air passage channel 212.

Referring to fig. 3 and 4, in some embodiments, the first air passage 211 is disposed obliquely downward relative to the second air passage 212, and the third air passage 213 is disposed obliquely upward relative to the second air passage 212.

So set up, can be convenient for detect inflow outflow gas path passageway 21 of air current, provide the guide effect for detecting the air current.

Specifically, since the air flow to be detected may flow into the first air passage 211 through the air inlet 201, the air flow to be detected may flow out of the air outlet 202 through the third air passage 213. As such, the relative positional relationship of air inlet 201 and air outlet 202 may be such that air outlet 202 is located in a vertically upward direction of air inlet 201.

The second air path channel 212 is disposed obliquely downward to allow an inflow of the air flow to be detected conveniently, and the third air path channel 213 is disposed obliquely upward to allow an outflow of the air flow to be detected conveniently, the outflow of the second air path channel 212 being provided. Because the particles of the air flow to be detected generally move upward, the particles of the air flow to be detected entering the second air channel 212 from the air inlet 201 can naturally move to the air outlet 202 to be discharged, and the probability that the particles escape from the second air channel 212 to contaminate the detection assembly 10 is further reduced.

Referring to fig. 3 and 4, in some embodiments, the light emitting assembly 11 includes a light emitting element 111, an emission fixing plate 112, and a hollow first sealing plug 113, the light emitting element 111 is mounted on the emission fixing plate 112, both ends of the first sealing plug 113 are respectively provided with a first opening 1131 and a second opening 1132, one end of the first sealing plug 113 is mounted on the emission fixing plate 112, the first opening 1131 receives the light emitting element 111, and the second opening 1132 faces the air path channel 21.

The light receiving assembly 12 includes a light receiving element 121, a receiving fixing plate 122 and a hollow second sealing plug 123, the light receiving element 121 is mounted on the receiving fixing plate 122, both ends of the second sealing plug 123 are respectively provided with a third opening 1231 and a fourth opening 1232, one end of the second sealing plug 123 is mounted on the receiving fixing plate 122, the third opening 1231 accommodates the light receiving element 121, and the fourth opening 1232 faces the air path channel 21.

As such, the light emitting element 111 and the light receiving element 121 can be easily mounted and fixed on the emission fixing plate 112 and the reception fixing plate 122. The first and second sealing plugs 113 and 123 may be used to connect the transmitting and receiving fixing plates 112 and 122, providing a passage for detecting light. Meanwhile, the first sealing plug 113 and the second sealing plug 123 can absorb air fluctuation, and the light emitting piece 111 and the light receiving piece 121 are prevented from being polluted by particles of the airflow to be detected.

In one embodiment, the soot sensor 100 includes a soot sensor in the form of near infrared rays, and the soot sensor 100 in the form of near infrared rays includes a light receiving assembly 12 and a light emitting assembly 11. The light emitting assembly 11 may include a light emitting member 111 and an emission fixing plate 112, and the light emitting member 111 is fixed on the emission fixing plate 112. The emitting member 111 may be an infrared emitting tube, the emission fixing plate 112 may be a circuit board, and the circuit board may provide operating current and voltage for the infrared emitting tube; the emission fixing plate 112 may also be a general mounting plate for mounting and fixing the infrared emission tube. The light receiving assembly 12 may include a light receiving element 121 and a receiving fixing plate 122, the light receiving assembly 12 may include an infrared receiving tube, the receiving fixing plate 122 may be a circuit board, and the circuit board may provide an operating current voltage for the infrared receiving tube; the receiving fixing plate 122 may also be a general mounting plate for mounting and fixing the infrared receiving tube. The oil smoke sensor 100 adopting the near infrared ray form may be installed in an air outlet area of the range hood, an air inlet area of the range hood, an oil screen of the range hood, and the like, which is not limited herein. The infrared receiving tube can receive the infrared transmitting tube and send infrared detection light, and when the infrared detection light is influenced by the shielding, reflection or scattering effect of the particle objects, the infrared light intensity received by the infrared receiving tube can be changed, so that the oil smoke concentration can be judged.

It is worth mentioning that the particle size span of the particulate matters in the oil smoke is 100 nm-10 um, and the particulate matters can shield the detection light under the condition that the particulate matters are in the air passage 21, so as to generate scattering and diffraction, that is, the particulate matters in the air passage 21 can influence the intensity of the detection light emitted by the light receiving part 121 to the light emitting part 111 so as to change the electric signal output by the light receiving part 121, so that the concentration of the air flow to be detected can be visually and accurately detected.

Furthermore, the first sealing plug 113 includes two openings disposed opposite to each other: a first opening 1131 and a second opening 1132, the first opening 1131 is connected to the emission fixing plate 112 by a connecting method including but not limited to bonding, clamping, etc., and the first sealing plug 113 can protect the light emitting element 111. The second sealing plug 123 comprises two openings arranged opposite to each other: a third opening 1231, a fourth opening 1232, and the third opening 1231 is connected to the receiving fixing plate 122 by a connection method including but not limited to adhesion, snap, etc., and the second sealing plug 123 can protect the light receiving element 121.

It should be noted that the material of the first sealing plug 113 and the second sealing plug 123 may be a soft material such as rubber or silicone, which is not limited herein.

In some embodiments, the first sealing plug 113 and the second sealing plug 123 are respectively formed with an inner cavity structure, and the inner cavity structure may include a plurality of oil shielding rings, that is, a plurality of oil shielding rings are annularly protruded on the inner cavity structures of the first sealing plug 113 and the second sealing plug 123. The plurality of shielding oil rings can absorb air pulsation and shield particulate matters of the air flow to be detected entering the first sealing plug 113 and the second sealing plug 123 to reduce contamination of the light emitting element 111 and the light receiving element 121. The service life of the light emitting element 111 and the light receiving element 121 is prolonged.

Referring to fig. 3, in some embodiments, the light emitting assembly 11 includes an emitting fixing base 114, a first sealing plug 113 and an emitting fixing plate 112 fixed on the emitting fixing base 114, the emitting fixing base 114 is formed with a first light hole, and the second opening 1132 is aligned with the first light hole;

the light receiving module 12 includes a receiving fixing seat 124, a second sealing plug 123 and a receiving fixing plate 122 fixed on the receiving fixing seat 124, the receiving fixing seat 124 has a second light hole, and the fourth opening 1232 is aligned with the second light hole.

So set up, the transmission fixing base 114 and the receiving fixing base 124 can realize the installation and fix. Realize the printing opacity through first light trap and second light trap, light transmission piece 111 launches and detects the light, detects the light and can pass through first light trap, second light trap, and light receiving piece 121 receives and detects the light.

Referring to fig. 4, in particular, the soot sensor 100 includes a light hole 115. The light holes 115 include a first light hole, which may be disposed on the emitter fixing base 114, and a second light hole, which may be disposed on the receiver fixing base 124. The first light hole is worn to establish by the axis of the piece 111 of sending out, and the second light hole is worn to establish by the axis of the piece 121 of receiving of light, and like this, light transmission 115 can realize the printing opacity, can make the piece 111 of sending out the light or the efficiency improvement that the piece 121 of receiving light is received to the piece 121 of sending out.

The launching fixing seat 114 can accommodate and mount the first sealing plug 113, and the launching fixing seat 114 can be further connected with the launching fixing plate 112; the receiving fixing seat 124 can receive and mount the second sealing plug 123, and the receiving fixing seat 124 can also be connected with the receiving fixing plate 122; the transmitting fixing seat 114 and the receiving fixing seat 124 can be connected with the air path structure 20 to realize the integral assembly of the oil smoke sensor 100, so that the oil smoke sensor 100 can reduce the requirement of high matching of the structure of the kitchen appliance 1000, and thus, the oil smoke sensor can be suitable for various machine types.

In some embodiments, the transmitting fixed plate 112 and the receiving fixed plate 122 are spatially vertically disposed.

So set up, under the condition that receiving fixed plate 122 and transmission fixed plate 112 set up perpendicularly in space, oil smoke sensor 100 can be convenient for set up to regular cube such as square, cuboid, can be convenient for oil smoke sensor 100's installation and fixed to can be convenient for the light emitting piece 111 on the transmission fixed plate 112 and receive the perpendicular setting of light receiving piece 121 on the fixed plate 122, make the contained angle that the axis of light emitting piece 111 and the axis of light receiving piece 121 are 90.

It is noted that in some embodiments, the transmitting fixing plate 112 and the receiving fixing plate 122 may also be disposed at an angle, for example: 60 °, 80 °, 110 °, 125 °, 150 °, etc., without limitation.

Referring to fig. 3 and 4, in some embodiments, a first groove is circumferentially formed on an inner wall of the first sealing plug 113, a first oil drainage groove is formed at a bottom of the inner wall of the first sealing plug 113, the first oil drainage groove is communicated with the first groove, a first oil drainage hole is formed in the launching fixing base 114, and the first oil drainage hole is communicated with the first oil drainage groove. The inner wall circumference of second sealing plug 123 is equipped with the second recess, and the inner wall bottom of second sealing plug 123 is equipped with the second oil extraction groove, and second oil extraction groove intercommunication second recess receives fixing base 124 and has seted up the second oil drain hole, second oil drain hole and second oil extraction groove intercommunication.

Specifically, the smoke sensor 100 includes an oil discharge hole 116 and an oil discharge groove 117, the smoke sensor 100 includes the oil discharge hole 116, and the oil discharge hole 116 includes a first oil discharge hole and a second oil discharge hole. The oil drain groove 117 includes a first oil drain groove and a second oil drain groove.

The inner wall of the first sealing plug 113 is provided with a first oil drainage groove, and the first oil drainage groove is connected with the first groove. When the particulate matter enters the first sealing plug 113 due to the fluctuation of the airflow to be detected, the particulate matter can be adsorbed on the inner wall of the first sealing plug 113 to form condensate, and the condensate can flow out through the first oil drainage groove at the bottom of the inner wall of the first sealing plug 113. The first oil drain groove is a long hole having a circular or square cross section, and preferably, the opening of the first oil drain groove is lower than the opening of the first sealing plug 113, that is, the first oil drain groove is inclined downward in a direction away from the light emitting member 111 so that the liquid flows out. The first oil drain groove may also be parallel to the inner wall of the first sealing plug 113 to allow the liquid to flow out by itself. The first oil drainage hole has been seted up to transmission fixing base 114, first oil drainage hole and first oil drainage groove intercommunication, and like this liquid can discharge oil smoke sensor 100 through first oil drainage hole.

The inner wall of the second sealing plug 123 is provided with a second oil drainage groove, and the second oil drainage groove is connected with the second groove. When the particulate matter enters the second sealing plug 123 due to the fluctuation of the air flow to be detected, the particulate matter is adsorbed on the inner wall of the second sealing plug 123 to form condensate, and the condensate can flow out through the second oil discharge groove at the bottom of the inner wall of the second sealing plug 123. The second oil drain groove is an elongated hole having a circular or square cross section, and preferably, the opening of the second oil drain groove is lower than the opening of the second sealing plug 123, that is, the second oil drain groove is inclined downward in a direction away from the light receiving element 121, so as to facilitate the liquid to flow out. The second drainage groove may also be parallel to the inner wall of the second plug 123 to allow the liquid to flow out of the second plug. The receiving fixing base 124 is provided with a second oil drainage hole, and the second oil drainage hole is communicated with the second oil drainage groove, so that the liquid can be discharged out of the oil smoke sensor 100 through the second oil drainage hole.

It should be noted that the values and value ranges mentioned in the above examples and embodiments are for the purpose of illustrating the practice of the invention and should not be construed as limiting the invention.

Referring to fig. 1 and fig. 2 again, the embodiment of the invention provides a kitchen appliance 1000, and the kitchen appliance 1000 includes a box 300, a fan assembly 500 and a smoke sensor 100.

A fan assembly 500 is mounted within the housing 300, the fan assembly 500 including a volute 510. The soot sensor 100 is disposed at the volute 510, and the air passage 21 is communicated with the soot passage 520 of the air outlet 511 of the volute 510.

According to the kitchen appliance 1000 provided by the embodiment of the invention, the detection assembly 10 is matched with the air channel structure 20, so that the detection assembly 10 can calculate the particulate matter concentration of the air flow to be detected by using the scattering effect of detection light under the condition that the air flow to be detected passes through the air channel 21. Because the air path structure 20 can guide in the air current to be measured, the requirement for high matching of the structure of the kitchen appliance 1000 is reduced, and the air path structure is suitable for various machine types.

Specifically, in the example of fig. 1, the kitchen appliance 1000 is a top-loading kitchen appliance 1000. It is understood that in other embodiments, the kitchen appliance 1000 may be a bottom-row kitchen appliance 1000 or a side-row kitchen appliance 1000, etc., and is not limited thereto. The following description will be made in detail with reference to the kitchen appliance 1000 as an example of the upper-row kitchen appliance 1000. Specifically, the kitchen appliance 1000 includes, but is not limited to, a range hood, an integrated range, and the like having a smoke exhaust function. The embodiment of the present invention is described by taking the kitchen appliance 1000 as an example of a range hood for easy understanding. The range hood can be a variable frequency range hood.

The kitchen appliance 1000 of the embodiment of the present invention includes, but is not limited to, a cabinet 300, a fan assembly 500, and a smoke sensor 100. The fan assembly 500 is disposed within the housing 300, and the fan assembly 300 includes a volute 510, a fan, an air inlet, and an air outlet 511. The fan is arranged in the volute 511, and a volute air channel is formed in the volute 511. The air inlet is used for supplying oil smoke into the fan assembly 500, and the air outlet 511 is communicated with the volute air channel and discharges the oil smoke out of the fan assembly 500. The smoke sensor 100 may be disposed at a position where the gas with smoke passes through in the kitchen appliance 1000, including but not limited to an air inlet and an air outlet 511 of the fan assembly 300, so that the gas with smoke can enter the smoke sensor 100 for detection.

In one embodiment, after oil smoke is generated around the kitchen appliance 1000, the oil smoke moves under the action of the kitchen appliance 1000 and enters the box 300, flows to the air outlet 511 through the air inlet of the fan assembly 300, the oil smoke sensor 100 is disposed at the side of the spiral case 510 near the air outlet 511, the oil smoke sensor 100 includes the detection assembly 10 and the air path structure 20, the air path structure 20 includes an air path channel 21, the air path channel 21 may be communicated with the spiral case 510, that is, the air path channel 21 corresponds to a bypass of the spiral case 510, and the oil smoke passes through the air path channel 21. The detecting component 10 calculates the concentration of the oil smoke in the air passage 21 by using the scattering effect of the detecting light, specifically, the light emitting component 11 emits the detecting light to the air passage 21, the detecting light enters the air passage 21 through the first sealing plug 113, the oil smoke in the air passage 21 affects the detecting light emitted by the light emitting component 11, the light receiving component 12 receives the detecting light affected by the gas in the air passage 21 through the second sealing plug 123, and outputs an electric signal according to the received detecting light. The detected gas is discharged out of the soot sensor 100 through the gas outlet 202. The air path structure 20 includes an air outlet 202 connected to the air outlet 511, so that the detected oil smoke is discharged out of the oil smoke sensor 100.

In some embodiments, referring to fig. 1, the soot sensor 100 is disposed at the air outlet 511 of the volute 510.

So, the oil smoke here is comparatively concentrated, and oil smoke sensor 100 sets up the distance from the particulate matter nearer, can be very fast sample the oil smoke to can discharge outside 1000 kitchen appliances fast.

In the description of the present specification, reference to the description of "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and those skilled in the art may make variations, modifications, substitutions and alterations to the above embodiments within the scope of the present invention.

Claims (10)

1. A soot sensor, comprising:

a detection assembly including a light emitting assembly for emitting detection light and a light receiving assembly for receiving the detection light emitted by the light emitting assembly;

the gas circuit structure is provided with a gas circuit channel, the axis of the light emitting assembly and the axis of the light receiving assembly are intersected in the gas circuit channel, the gas circuit channel comprises a gas inlet and a gas outlet, and the gas circuit structure is used for leading in the gas to be detected from the gas inlet to the gas circuit channel and leading out the gas to be detected from the gas outlet.

2. The smoke sensor of claim 1, wherein an axis of the light emitting assembly is perpendicular to an axis of the light receiving assembly.

3. The soot sensor of claim 1, wherein said air passage channel comprises a first air passage channel, a second air passage channel and a third air passage channel, said second air passage channel connects said first air passage channel and said third air passage channel, an axis of said light emitting assembly intersects an axis of said light receiving assembly in said second air passage channel, said first air passage channel has said air inlet, said third air passage channel has said air outlet.

4. The soot sensor of claim 3, wherein an axis of said light receiving assembly passes through a center of said second air passage channel.

5. The soot sensor of claim 3, wherein said first air path channel is disposed obliquely downward with respect to said second air path channel, and said third air path channel is disposed obliquely upward with respect to said second air path channel.

6. The soot sensor of claim 1, wherein the light emitting assembly comprises a light emitting element, a transmitting fixing plate and a hollow first sealing plug, the light emitting element is mounted on the transmitting fixing plate, two ends of the first sealing plug are respectively provided with a first opening and a second opening, one end of the first sealing plug is mounted on the transmitting fixing plate, the first opening accommodates the light emitting element, and the second opening faces the air path channel;

the light receiving assembly comprises a light receiving part, a receiving fixing plate and a hollow second sealing plug, the light receiving part is installed on the receiving fixing plate, a third opening and a fourth opening are respectively formed in the two ends of the second sealing plug, one end of the second sealing plug is installed on the receiving fixing plate, the third opening accommodates the light receiving part, and the fourth opening faces the air path channel.

7. The smoke sensor of claim 6, wherein the transmitting fixed plate and the receiving fixed plate are spatially vertically disposed.

8. The soot sensor of claim 6, wherein the light emitting assembly comprises a transmitting fixing base, the transmitting fixing plate and the first sealing plug are fixed to the transmitting fixing base, the transmitting fixing base is provided with a first light hole, and the first light hole is aligned with the second opening;

the light receiving assembly comprises a receiving fixing seat, the receiving fixing plate and the second sealing plug are fixed on the receiving fixing seat, the receiving fixing seat is provided with a second light-transmitting hole, and the second light-transmitting hole is aligned to the fourth opening.

9. The lampblack sensor as claimed in claim 8, wherein a first groove is circumferentially formed in the inner wall of the first sealing plug, a first oil drainage groove is formed in the bottom of the inner wall of the first sealing plug, the first oil drainage groove is communicated with the first groove, a first oil drainage hole is formed in the transmitting fixing seat, and the first oil drainage hole is communicated with the first oil drainage groove;

the inner wall circumference of second sealing plug is equipped with the second recess, the inner wall bottom of second sealing plug is equipped with the second oil extraction groove, the second oil extraction groove intercommunication the second recess, receive the fixing base and seted up the second oil drain hole, the second oil drain hole with the second oil extraction groove intercommunication.

10. A kitchen appliance, characterized in that it comprises:

a box body;

the fan assembly is arranged in the box body and comprises a volute;

the soot sensor of any one of claims 1 to 9, being disposed at the volute, the air path channel being in communication with a soot channel of an air outlet of the volute.

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