CN210688383U

CN210688383U - Sensor assembly and kitchen appliance

Info

Publication number: CN210688383U
Application number: CN201921609334.3U
Authority: CN
Inventors: 刘玉磊
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-06-05
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a sensor module and kitchen appliance. The sensor assembly comprises a circuit board, a protection piece and an organic molecule sensor, the organic molecule sensor and the protection piece are arranged on the circuit board, the protection piece is provided with an accommodating hole, the organic molecule sensor is located in the accommodating hole, and the inner wall of the accommodating hole is provided with a shielding part located at the front end of the organic molecule sensor. Among the above-mentioned sensor assembly, because organic matter molecule sensor is located the accepting hole, and the inner wall of accepting hole is equipped with the occlusion part, and the gas flow fluctuation in the kitchen appliance wind channel can make some oil smoke particulate matters get into under the condition of accepting hole like this, after the cushioning effect of occlusion part, most particulate matters can be blockked by the occlusion part for organic matter molecule sensor receives the pollution reduction of oil smoke, can keep the sensitivity of organic matter molecule sensor, guarantees that kitchen appliance's the speed of discharging fume accords with reality.

Description

Sensor assembly and kitchen appliance

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a sensor assembly and kitchen appliance.

Background

At present, in order to keep the air in a kitchen clean in the cooking process, a range hood is generally arranged in the kitchen. In the related art, the smoke exhaust speed of the range hood is generally detected by a sensor to adjust the smoke exhaust speed of the range hood in real time. However, when the sensor is used for detecting the concentration of the oil smoke, the sensor can contact the oil smoke, so that the sensitivity of the sensor is reduced due to the pollution of the oil smoke when the sensor is used for a long time, and the smoke exhaust speed of the range hood is influenced to be inconsistent with the actual requirement.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sensor assembly and kitchen appliance.

The embodiment of the utility model provides a pair of sensor assembly for kitchen appliance, sensor assembly includes circuit board, protection piece and organic matter molecule sensor, organic matter molecule sensor with the protection piece is located on the circuit board, the accepting hole has been seted up to the protection piece, organic matter molecule sensor is located in the accepting hole, the inner wall of accepting hole is equipped with and is located the occlusion part of organic matter molecule sensor front end.

Among the above-mentioned sensor assembly, because organic matter molecule sensor is located the accepting hole, and the inner wall of accepting hole is equipped with the shielding part, the gas flow fluctuation in the kitchen appliance wind channel like this can make some oil smoke particulate matters get into the condition of accepting hole through the accepting hole opening of shielding part front end under, after the cushioning effect of shielding part, most particulate matters can be blockked by the shielding part for organic matter molecule sensor receives the pollution reduction of oil smoke, can keep the sensitivity of organic matter molecule sensor, guarantee that kitchen appliance's exhaust fume speed accords with reality.

In some embodiments, a ratio of a diameter of the guard to an aperture of the receiving hole is greater than or equal to 5.5.

In some embodiments, the accommodating hole includes a protection section and an accommodating section, the protection section and the accommodating section are sequentially arranged along a direction close to the circuit board, the organic molecule sensor is accommodated in the accommodating section, and a waterproof and breathable film is arranged at the front end of the organic molecule sensor.

In some embodiments, an oil guiding groove connected to the shielding portion is formed on an inner wall of the receiving hole.

In some embodiments, the oil guide groove is horizontally arranged or inclined downwards along a direction far away from the circuit board.

In certain embodiments, the sensor assembly includes a seal ring positioned between the shield and the circuit board.

In some embodiments, the shielding portion is formed with a plurality of oil slingers, and the plurality of oil slingers are arranged in series along the length direction of the receiving hole, or the oil slingers are spirally protruded on the inner wall of the receiving hole.

The embodiment of the utility model provides a kitchen appliance is still provided, it includes any one of above-mentioned embodiment sensor assembly.

Among the above-mentioned kitchen appliance, because organic matter molecule sensor is located the accepting hole, and the inner wall of accepting hole is equipped with the shielding part, the gas flow fluctuation in the kitchen appliance wind channel like this can make some oil smoke particulate matters get into under the condition of accepting hole through the accepting hole opening of shielding part front end, after the cushioning effect of shielding part, most particulate matters can be blockked by the shielding part, make organic matter molecule sensor receive the pollution reduction of oil smoke, can keep the sensitivity of organic matter molecule sensor, guarantee that kitchen appliance's exhaust fume speed accords with reality.

In some embodiments, the kitchen appliance includes guide plate subassembly, box, check valve and tobacco pipe, the box is established on the guide plate subassembly, be equipped with the fan subassembly in the box, the check valve is connected the top of box, the tobacco pipe is connected the check valve is kept away from one side of box, the fan subassembly includes the spiral case and establishes fan in the spiral case, the guide plate subassembly is equipped with and gathers together the cigarette chamber, organic matter molecular sensor installs gather together the cigarette chamber the spiral case the check valve with on at least one of tobacco pipe, organic matter molecular sensor is used for detecting gather together the cigarette chamber the spiral case the check valve with organic matter molecular concentration in at least one of tobacco pipe.

In some embodiments, the kitchen appliance is preset with at least three concentration ranges arranged according to size, each concentration range corresponds to the air volume of one fan, and the kitchen appliance comprises a fan and a drive board, wherein the drive board is used for controlling the operation of the fan according to the concentration range of the organic matter molecule concentration detected by the organic matter molecule sensor and the air volume corresponding to the concentration range.

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 view of a protective member according to an embodiment of the present invention;

fig. 2 is a further schematic structural view of a protective element according to an embodiment of the present invention;

fig. 3 is a perspective view of a protective shield according to an embodiment of the present invention;

fig. 4 is another perspective view of a protective shield according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a kitchen appliance according to an embodiment of the present invention;

fig. 6 is a block diagram of a kitchen appliance according to an embodiment of the present invention;

fig. 7 is a distribution diagram of organic matter molecule concentration of the kitchen appliance according to the embodiment of the present invention;

FIG. 8 is a graph showing the relationship between the organic matter molecule concentration and the air volume of the fan in the kitchen appliance according to the embodiment of the present invention;

fig. 9 is another graph showing the relationship between the organic matter molecule concentration and the air volume of the fan in the kitchen appliance according to the embodiment of the present invention.

Description of the main element symbols:

kitchen appliance 100, oil smoke sensor 200, organic matter molecules 201, oil smoke particles 202 and sensor assembly 300;

a guide plate component 10 and a smoke collecting cavity 11;

the device comprises a box body 20, a fan assembly 21, a volute 22, a fan 23 and a smoke tube 24;

a check valve 30, a drive plate 40, a display portion 41, and a circuit board 42;

the protection member 50, the receiving hole 51, the protection section 52, the receiving section 53, the waterproof and breathable film 54, the shielding portion 55, the oil baffle ring 551, the oil guiding groove 56, and the smoke tube 24.

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 exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1, 2 and 5, the present invention provides a sensor assembly 300 and a kitchen appliance 100. The sensor assembly 300 includes a circuit board 42, a protection element 50 and an organic molecule sensor 200, wherein the organic molecule sensor 200 and the protection element 50 are disposed on the circuit board 42, the protection element 50 is provided with a receiving hole 51, the organic molecule sensor 200 is disposed in the receiving hole 51, and a shielding portion 55 disposed at the front end of the organic molecule sensor 200 is disposed on the inner wall of the receiving hole 51.

The sensor assembly 300 may be applied to the kitchen appliance 100 of the present embodiment. The kitchen appliance 100 according to the present embodiment is suitable for being mounted on a range in a home kitchen, and is also suitable for a large kitchen in a restaurant. In one example, when a user performs a cooking operation on a kitchen range, oil smoke is generated during the cooking process, the oil smoke contains a large amount of organic molecules 201 and oil smoke particles 202, and the concentration of the organic molecules 201 is generally proportional to the concentration of the oil smoke particles, so that the concentration of the oil smoke can be determined by detecting the concentration of the organic molecules 201. The organic molecule sensor 200 installed on the kitchen appliance 100 can detect the concentration of the organic molecules 201 contained in the oil smoke, know the concentration of the oil smoke particles 202 in the current kitchen, and adjust the rotating speed of the fan 23 of the fan assembly 21 according to the concentration of the organic molecules 201 contained in the current oil smoke to adjust the air volume of the fan. The system not only can effectively purify the oil smoke concentration in a kitchen in real time and protect the health of human bodies, but also can properly reduce the power of the fan assembly 21 and save energy when the oil smoke concentration is relatively low. The kitchen appliance 100 includes, but is not limited to, a range hood, an integrated kitchen, and the like having a function of discharging oil smoke. In the illustrated embodiment, the kitchen appliance 100 is described by taking a range hood as an example.

In the sensor assembly 300, because the organic molecule sensor 200 is located in the receiving hole 51, and the shielding portion 55 is disposed on the inner wall of the receiving hole 51, when the gas flow fluctuation in the air duct of the kitchen appliance 100 causes some oil smoke particles to enter the receiving hole 51 through the opening of the receiving hole 51 at the front end of the shielding portion 55, most of the particles will be blocked by the shielding portion 55 after the buffering action of the shielding portion 55, so that the pollution of the organic molecule sensor 200 by the oil smoke is reduced, the sensitivity of the organic molecule sensor 200 can be maintained, and the smoke exhaust speed of the kitchen appliance 100 is ensured to be consistent with the actual speed.

Specifically, in the embodiment shown in fig. 1, the organic molecule sensor 200 is located at one end inside the housing hole 51. It is understood that in other embodiments, the organic molecule sensor 200 may be located at other positions in the housing hole 51, and the shielding portion may be located at the front end of the organic molecule sensor 200.

Further, the sensor assembly 300 includes a sealing ring (not shown) positioned between the guard 50 and the circuit board 42. In this manner, a relatively airtight connection of the shield 50 to the circuit board 42 can be achieved. Specifically, the circuit board 42 of the organic molecule sensor 200 contacts with the end surface of the protection element 50 or a sealing ring on the end surface, and is matched by compression deformation, so that a receiving hole 51 with one sealed end is formed inside the protection element 50, an opening of the receiving hole 51 is communicated with an air duct of the kitchen appliance 100, soot particles 202 and organic molecules 201 on the air duct of the kitchen appliance 100 enter the receiving hole 51 through diffusion, and the organic molecule sensor 200 in the receiving hole 51 detects the concentration of the organic molecules 201. Preferably, the protection member 50 is made of soft material such as rubber or silicone. In the embodiment of fig. 2, the shielding portion 55 is formed with a plurality of slingers 551, the plurality of slingers 551 is provided, and the plurality of slingers 551 are provided along the longitudinal direction T of the housing hole 51.

Specifically, the plurality of oil deflectors 551 on the inner wall of the receiving hole 51 may form a plurality of zigzag structures, because the fluctuation of the air flow in the air duct may cause some particles to enter the receiving hole 51, and after the buffering action of the oil deflectors 551, the particles may be blocked by the zigzag structures. Thus, by providing the oil slinger 551, the particles are blocked by the oil slinger 551, and direct pollution to the organic molecule sensor 200 is not caused.

In some embodiments, the ratio of the diameter L of the shielding element 50 to the diameter I of the receiving hole 51 is greater than or equal to 5.5.

Specifically, the guard 50 may have a cylindrical shape, and the housing hole 51 may have a cylindrical shape. The housing hole 51 is formed inside the guard 50, and the diameter of the housing hole 51 is not necessarily too small, but too small may make it difficult for the organic molecules 201 to enter the housing hole 51, and the organic molecule sensor 200 may not detect the concentration of the organic molecules 201 precisely. Therefore, the ratio of the diameter L of the protection element 50 to the aperture I of the receiving hole 51 is greater than or equal to 5.5, preferably greater than or equal to 6, so that the organic molecules 201 in the oil smoke diffuse to the sensitive layer of the sensor less than 1%.

In some embodiments, the receiving hole 51 includes a protection section 52 and a receiving section 53, the protection section 52 and the receiving section 53 are sequentially disposed along a direction close to the circuit board 42, the organic molecule sensor 200 is received in the receiving section 53, and a waterproof air-permeable film 54 is disposed at a front end of the organic molecule sensor 200.

Specifically, particles and gas molecules on the air duct of the kitchen appliance 100 enter the receiving hole 51 through diffusion. Gaseous molecule diffusion effect is stronger than oil smoke granule 202, can diffuse to holding hole 51 bottom rapidly, the oil smoke granule 202 in the gas molecule can be blockked to the protection section 52 that sets up in the holding hole 51, organic matter molecule sensor 200 sets up at holding section 53, waterproof ventilated membrane 54 at the setting of organic matter molecule sensor 200 front end, can prevent to diffuse other materials that contain in the organic matter molecule 201 of holding hole 51 bottom, it causes the change of numerical value directly to fall into organic matter molecule sensor 200, it is not influenced to protect organic matter molecule sensor 200, make the data that detect more accurate. In the illustrated embodiment, a waterproof, breathable membrane 54 is disposed at an end of the receiving section 53 adjacent to the shielding section 52.

It should be noted that the material of the waterproof breathable film 54 may be polytetrafluoroethylene, and the waterproof breathable film 54 may be an optional part or not.

Referring to fig. 3 and 4, in some embodiments, an oil guiding groove 56 connected to the shielding portion 55 is formed on an inner wall of the receiving hole 51. Thus, the oil-water mixture formed in the housing hole 51 can be discharged from the housing hole 51 through the oil guide groove 56 formed in the bottom of the housing hole 51.

Specifically, in the embodiment of fig. 2, after entering the receiving hole 51, the soot particles 202 are attached to the sawtooth structure and condensed into an oil-water mixture, and then discharged out of the receiving hole 51 through the oil guiding groove 56 at the bottom of the receiving hole 51, thereby preventing the accumulation of contaminants in the receiving hole 51. In one embodiment, oil guide groove 56 is horizontally disposed, i.e., oil guide groove 56 may be disposed in a horizontal configuration.

In another embodiment, the oil guide groove 56 is inclined downward in a direction away from the circuit board 42, and thus the oil guide groove 56 is designed to have a structure with a low opening and a high inside for discharging oil. The oil guide groove 56 can be any rectangular cavity, such as a square cavity, a round cavity, etc.

In some embodiments, the shielding portion 55 is formed with a plurality of oil deflector rings 551, the number of oil deflector rings 551 is plural, and the plurality of oil deflector rings 551 are arranged in sequence along the length direction of the receiving hole 51, or referring to fig. 4, the oil deflector rings 551 are spirally protruded on the inner wall of the receiving hole 51.

Specifically, the oil deflector ring 551 has a spiral sawtooth structure inside the receiving hole 51 to block the soot particles 202. The end of the bell-mouth spiral oil deflector ring 551 far away from the circuit board 42 is lower than the end near the circuit board 42, which is beneficial to the formed water mixture to flow out automatically. By using the structure, when the injection molding module is produced, the mold core can be smoothly demoulded after being overturned for a plurality of circles without strong drawing, the production efficiency of rubber parts can be improved, and a deep cavity with a larger depth-to-width ratio can be obtained. Further, the oil guiding groove 56 includes, but is not limited to, a concave shape, and may also be any shape structure having such a function, such as a square shape, a circular shape, and the like.

It should be noted that, besides the oil deflector ring 551 mentioned in the above embodiments, the shielding portion 55 may include other shielding structures, such as a bump, a protrusion, a depression, etc. disposed on the inner wall of the receiving hole 51, that is, the shielding portion 55 is disposed to increase the area of the inner wall of the receiving hole 51, thereby increasing the probability of the soot particles being attached.

In addition, referring to fig. 3 and 4, a positioning pin 57 is protruded from a rear end periphery of the protection member 50 for mounting and positioning to the kitchen appliance 100. The guard 50 has a through hole 501 at the rear end thereof for accommodating the organic molecule sensor 200.

Referring to fig. 5, an embodiment of the present invention provides a kitchen appliance 100 including a sensor assembly 300 according to any of the above embodiments.

In the kitchen appliance 100, the organic molecule sensor 200 is located in the accommodating hole 51, and the shielding portion 55 is disposed on the inner wall of the accommodating hole 51, so that under the condition that the gas flow fluctuation in the air duct of the kitchen appliance 100 causes some oil smoke particles to enter the accommodating hole 51 through the opening of the accommodating hole 51 at the front end of the shielding portion 55, most of the particles are blocked by the shielding portion 55 after the buffering action of the shielding portion 55, so that the pollution of the organic molecule sensor 200 by the oil smoke is reduced, the sensitivity of the organic molecule sensor 200 can be maintained, and the smoke exhaust speed of the kitchen appliance 100 is ensured to be consistent with the actual speed.

In some embodiments, the kitchen appliance 100 includes a baffle assembly 10, a box 20, a check valve 30 and a smoke tube 24, the box 20 is disposed on the baffle assembly 10, a blower assembly 21 is disposed in the box 20, the check valve 30 is connected to the top of the box 20, the smoke tube 24 is connected to a side of the check valve 30 away from the box 20, the blower assembly 21 includes a volute 22 and a blower 23 disposed in the volute 22, the baffle assembly 10 is provided with a smoke collection chamber, the organic molecule sensor 200 is mounted on at least one of the smoke collection chamber (not shown), the volute 22, the check valve 30 and the smoke tube 24, and the organic molecule sensor 200 is configured to detect a concentration of organic molecules in at least one of the smoke collection chamber, the volute 22, the check valve 30 and the smoke tube 21.

Specifically, an organic molecule sensor 200(VOC sensor) is used. In the illustrated embodiment, the organic molecule sensors 200 are installed in the smoke collection chamber, the spiral case 22, the check valve 30 and the smoke tube 24, so that the organic molecule sensors can detect the concentration of the organic molecules 201 in the smoke collection chamber, the spiral case 22, the check valve 30 and the smoke tube 24, and the controller of the kitchen appliance 100 can average the concentration data of the organic molecules 201 collected from the four organic molecule sensors 200, and use the average value as the basis for controlling the operation of the blower 23. It is understood that in other embodiments, the data collected by the four organic molecule sensors 200 may be weighted differently to calculate the data ultimately relied upon to control the operation of the blower 23. In further embodiments, the organic molecule sensor 200 may be mounted on two, three, or any one of the smoke collection chamber, the volute 22, the check valve 30, and the smoke tube 24.

The box body 20 is connected with the cigarette collecting cavity. The kitchen appliance 100 guides cooking fumes generated in the kitchen to the fan assembly 21, the check valve 30, the box 20 and the smoke tube 24 through a smoke suction port (not shown) on the inner wall of the smoke collection chamber, and finally discharges the cooking fumes through the smoke tube 24.

Referring to fig. 6, in some embodiments, the kitchen appliance 100 includes a driving board 40, the driving board 40 is connected to the organic molecule sensor 200 and the blower 23, and the driving board 40 is used for controlling the operation of the blower 23 according to the concentration of the organic molecules 201.

Specifically, the kitchen appliance 100 is provided with a drive plate 40 therein, such as may be provided within the housing of the baffle assembly 10. The driving board 40 may include a circuit board 42, and electrical components such as a controller (e.g., MCU) and a memory installed on the circuit board 42, and the controller may collect the concentration of organic molecules 201 in the oil smoke through the organic molecule sensor 200, and further determine the concentration value of the current oil smoke. According to the concentration of the organic matter molecules 201 contained in the current oil smoke, the operation of the fan 23 is controlled through the driving plate 40, that is, the rotating speed of the fan 23 is controlled so as to control the air volume of the fan 23.

Referring to fig. 7, 8 and 9, in some embodiments, the kitchen appliance 100 is preset with at least three concentration ranges according to size, each concentration range corresponds to the air volume of one fan 23, and the driving board 40 is used for controlling the operation of the fan 23 according to the concentration range in which the concentration of the organic molecules 201 is located and the air volume corresponding to the concentration range.

Specifically, in an example, referring to fig. 7, during the cooking process, the user generally lasts 180 seconds in the whole cooking process, and the kitchen appliance 100 can form the output data of the organic molecule sensor 200 into a two-dimensional curve of the concentration value of the organic molecule 201 corresponding to the time. The vertical axis AD value of the two-dimensional curve (analog signal output by the organic molecule sensor is converted into digital signal value) is in direct proportion to the concentration of the organic molecules 201, and represents the concentration of the organic molecules 201. In a static state (uncooked state), the AD value detected by the organic molecule sensor 200 is maintained at a certain level, and organic molecules are gradually generated in the edible oil after ignition (cooking start) and the AD value is gradually increased. When the dish is placed (cooking stage), a large smoke is generated, and the AD value of the organic molecule sensor 200 also changes rapidly. During the stir-frying process, the smoke amount is greatly changed, and the AD value of the organic matter molecular sensor 200 is changed again. After the cooking is finished and the fire is turned off, the fan 23 continues to exhaust air, along with the air exhaust treatment of the fan 23, the organic molecules are gradually reduced, the AD value is slowly reduced, and the initial state is gradually recovered.

Further, in fig. 8 and 9, the driving board 40 of the kitchen appliance 100 converts the analog signal detected by the organic molecule sensor 200 into a digital signal by the analog signal, so as to equate the AD value to the concentration value of the organic molecule 201, and the driving board 40 controls the air volume of the fan 23 according to the concentration value of the organic molecule 201. In one example, the correspondence relationship between the concentration of the organic molecules 201 and the air volume of the fan 23 can be divided into at least three concentration ranges (i.e., at least three stages), and the illustrated embodiment is divided into three concentration ranges: (0,5000),[5000,18000),[18000,20000]When the organic molecule sensor 200 detects that the concentration value (AD value) of the organic molecule 201 is at (0,5000), it is defined as light oil smoke, and the air volume of the fan 23 is adjusted to 16m by adopting a fast gear-up mode³Min, the display unit 41 displays the low gear of the fan 23. When the organic molecule sensor 200 detects that the concentration value of the organic molecules 201 is at [5000,18000 ], it is defined as medium oil smoke, the air volume of the fan 23 is proportional to the concentration of the organic molecules 201, and the display unit 41 displays that the number of the fan 23 is at the medium level. The concentration value of the organic molecule 201 detected by the organic molecule sensor 200 is [18000,20000 ]]The time is defined as high oil smoke and is rapidly accelerated to the maximum air quantity of 24m of the kitchen electrical appliance³Min, the display unit 41 displays the number of stages of the fan 23 as high. It can be understood that, when light oil smoke, the fan 23 quickly responds to exhaust the oil smoke, and the fan 23 has low rotating speed and low noise. The linear increase in middle oil smoke can give consideration to the smoke exhaust effect and the noise of the fan 23. The quick response big amount of wind when high oil smoke prevents that the oil smoke from escaping, ensures health, promotes user experience.

It will be understood that the specific values set forth above are merely for convenience in describing the practice of the invention and should not be construed as limiting the invention. In other examples or embodiments, other values may also be used.

In some embodiments, the kitchen appliance 100 is preset with a corresponding relationship between the air volume of the fan 23 and the gear, the kitchen appliance 100 includes a display unit 41, and the driving board 40 is connected to the display unit 41 and is configured to control the air volume of the fan 23 according to the concentration of the organic molecules 201, and control the display unit 41 to display the gear corresponding to the air volume of the fan 23.

Specifically, the driving board 40 of the kitchen appliance 100 is connected to the display unit 41, when the kitchen appliance 100 is just turned on, the oil smoke concentration is not generated, and the air volume of the fan 23 is in a preset value state, for example, the air volume is adjusted to 16m³And/min, the display part 41 displays the gear of the fan 23 at the preset time, such as low gear. During the cooking process, a user can generate oil smoke, and the concentration of the oil smoke can be changed at any time. The driving board 40 can determine the oil smoke concentration according to the concentration value of the organic molecules 201 detected by the organic molecule sensor 200, and adjust the air volume of the corresponding fan in time. The display part 41 displays the current gear of the fan 23 facing the user in real time, so that the user can conveniently know the current oil smoke condition in real time.

The display unit 41 includes, but is not limited to, displaying the gear position of the fan 23, and may also display a concentration value or a smoke concentration of the organic molecules 201, a rotation speed of the fan 23, an air volume, and other instructions, such as a high, low, and normal state of the organic molecules 201.

In one example, the organic molecule sensor 200 is disposed at an air outlet duct position of the volute 22 in the kitchen appliance 100, the organic molecule sensor 200 detects a concentration value signal of the organic molecule 201, and transmits the signal to the driving board 40, the driving board 40 converts an analog signal of the concentration value of the organic molecule 201 detected by the organic molecule sensor 200 into a digital signal of the concentration value of the organic molecule 201, and controls the air volume of the fan 23 of the kitchen appliance 100 according to a concentration range where the digital signal is located, and controls the display part to display the gear. In another example, the organic molecule sensors 200 are disposed at the air outlet duct and the smoke pipe 24 of the volute 22 in the kitchen appliance 100, the two organic molecule sensors 200 detect the concentration value signals of the organic molecules 201, and respectively transmit the signals to the driving board 40, the driving board 40 converts the analog signals of the concentration values of the organic molecules 201 detected by the two organic molecule sensors 200 into digital signals of the concentration value of the organic molecules 201, and then the data values of the two organic molecule sensors 200 are subjected to operation processing to obtain the average value of the data detected by the two organic molecule sensors 200, and the air volume of the blower 23 of the kitchen appliance 100 is controlled according to the obtained average value of the concentration values of the organic molecules 201, and the display unit 41 is controlled to perform gear display. And so on.

In the description herein, references to the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean 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.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The sensor assembly is used for kitchen appliances and is characterized by comprising a circuit board, a protection piece and an organic molecule sensor, wherein the organic molecule sensor and the protection piece are arranged on the circuit board, an accommodating hole is formed in the protection piece, the organic molecule sensor is located in the accommodating hole, and a shielding part located at the front end of the organic molecule sensor is arranged on the inner wall of the accommodating hole.

2. The sensor assembly of claim 1, wherein a diameter of the guard to an aperture ratio of the receiving hole is greater than or equal to 5.5.

3. The sensor assembly of claim 1, wherein the receiving hole comprises a protection section and a receiving section, the protection section and the receiving section are sequentially arranged along a direction close to the circuit board, the organic molecular sensor is received in the receiving section, and a waterproof and breathable film is arranged at the front end of the organic molecular sensor.

4. The sensor assembly of claim 1, wherein the inner wall of the receiving hole is formed with an oil guiding groove connected to the shielding portion.

5. The sensor assembly of claim 4, wherein the oil guide groove is disposed horizontally or inclined downward in a direction away from the circuit board.

6. The sensor assembly of claim 1, comprising a sealing ring positioned between the shield and the circuit board.

7. The sensor package according to claim 1, wherein the shielding portion is formed with a plurality of slingers, and the plurality of slingers are arranged in series along a longitudinal direction of the housing hole, or the slingers are spirally provided in a protruding manner on an inner wall of the housing hole.

8. A kitchen appliance comprising a sensor assembly according to any of claims 1 to 7.

9. The kitchen appliance according to claim 8, wherein the kitchen appliance comprises a flow guide plate assembly, a box body, a check valve and a smoke tube, the box body is arranged on the flow guide plate assembly, a fan assembly is arranged in the box body, the check valve is connected to the top of the box body, the smoke tube is connected to one side, away from the box body, of the check valve, the fan assembly comprises a volute and a fan arranged in the volute, the flow guide plate assembly is provided with a smoke gathering cavity, the organic matter molecular sensor is arranged on at least one of the smoke gathering cavity, the volute, the check valve and the smoke tube, and the organic matter molecular sensor is used for detecting the concentration of organic matter molecules in at least one of the smoke gathering cavity, the volute, the check valve and the smoke tube.

10. The kitchen appliance according to claim 8, wherein at least three concentration ranges are preset in the kitchen appliance according to the size, each concentration range corresponds to the air volume of one fan, the kitchen appliance comprises a fan and a drive board, and the drive board is used for controlling the operation of the fan according to the concentration range of the organic matter molecule concentration detected by the organic matter molecule sensor and the air volume corresponding to the concentration range.