CN210951454U

CN210951454U - Kitchen appliance

Info

Publication number: CN210951454U
Application number: CN201921611226.XU
Authority: CN
Inventors: 刘玉磊; 陈寅之; 程刚
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: 2020-07-07
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a kitchen appliance. The kitchen electrical appliance comprises an air duct system and an organic matter molecule sensor, the air duct system is provided with a fan assembly, the fan assembly comprises a volute and a fan arranged in the volute, the organic matter molecule sensor is installed in the air duct system, the organic matter molecule sensor is used for detecting organic matter molecule concentration air duct system and organic matter molecule sensor in the air duct system, the air duct system is provided with the fan assembly, the fan assembly comprises the volute and the fan arranged in the volute, the organic matter molecule sensor is installed in the air duct system, and the organic matter molecule sensor is used for detecting organic matter molecule concentration in the air duct system. According to the kitchen appliance in the embodiment, the organic molecule sensor is used for detecting the concentration of the organic molecules, and the concentration of the organic molecules can be subsequently used as the judgment basis of the concentration of the oil smoke, so that the kitchen appliance can be automatically controlled, and the convenience in use of a user is improved.

Description

Kitchen appliance

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to a 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 adjusted manually by a user. Moreover, the oil smoke mainly comprises particles with the size and organic molecules, and in the heating process of the edible oil, the organic molecules, namely peculiar smell, are firstly generated and then the particles are generated. After cooking is finished, the particles are quickly discharged and the organic molecules stay for a longer time. The user is more conscious to the peculiar smell of culinary art in-process, and cooks the overall process and all have the organic matter molecule's of peculiar smell existence, and it is inconvenient for the user to take to use for the manual speed of discharging fume that adjusts range hood of user.

SUMMERY OF THE UTILITY MODEL

The utility model provides a kitchen appliance.

The utility model discloses embodiment's kitchen appliance includes air duct system and organic matter molecule sensor, air duct system is equipped with the fan subassembly, the fan subassembly includes the spiral case and establishes fan in the spiral case, organic matter molecule sensor installs air duct system, organic matter molecule sensor is used for detecting organic matter molecule concentration in the air duct system.

According to the kitchen appliance in the embodiment, the organic molecule sensor is used for detecting the concentration of the organic molecules, and the concentration of the organic molecules can be subsequently used as the judgment basis of the concentration of the oil smoke, so that the kitchen appliance can be automatically controlled, and the convenience in use of a user is improved.

In certain embodiments, the kitchen appliance includes a drive board connecting the organic molecule sensor and the blower.

In some embodiments, the kitchen appliance is preset with a corresponding relationship between the air volume and the gear of the fan, and includes a display unit, and the drive board is connected to the display unit and is configured to control the air volume of the fan according to the organic molecule concentration and control the display unit to display the gear corresponding to the air volume of the fan.

In some embodiments, the kitchen appliance is preset with at least three concentration ranges according to size, each concentration range corresponds to the air volume of one fan, and the driving board is used for controlling the kitchen appliance according to the concentration range where the organic matter molecule concentration is located and the air volume corresponding to the concentration range.

In some embodiments, the kitchen appliance includes a circuit board and a protection member, the organic molecule sensor and the protection member are disposed on the circuit board, the protection member defines a receiving hole, and the organic molecule sensor is located in the receiving hole.

In some embodiments, the diameter of the guard to the aperture ratio 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, the inner wall of the receiving hole is provided with a shielding portion located 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 some embodiments, the kitchen appliance includes guide plate subassembly, box and check valve, the box is established on the guide plate subassembly, be equipped with in the box the fan subassembly, the check valve is connected the top of box, the check valve is connected with the tobacco pipe, guide plate subassembly is equipped with holds together the cigarette chamber, air duct system includes hold together the wind channel in cigarette chamber the wind channel of spiral case, the wind channel of check valve with the wind channel of tobacco pipe, organic matter molecular sensor installs hold 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 hold together the cigarette chamber the spiral case the check valve with organic matter molecular concentration in at least one wind channel of tobacco pipe.

In some embodiments, in the case that the organic molecule sensor is installed in two or more of the smoke collecting cavity, the volute, the check valve and the smoke pipe, the kitchen appliance is configured to process concentrations of organic molecules output by the two or more organic molecule sensors to obtain a calculated value, and control the kitchen appliance according to the calculated value.

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 block diagram of a kitchen appliance according to an embodiment of the present invention;

fig. 3 is a distribution diagram of the organic matter molecule concentration of the kitchen appliance according to the embodiment of the present invention;

FIG. 4 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. 5 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;

fig. 6 is a schematic structural view of a guard according to an embodiment of the present invention;

fig. 7 is a further schematic structural view of a protective element according to an embodiment of the present invention;

fig. 8 is a perspective view of a protective shield according to an embodiment of the present invention;

fig. 9 is another perspective view of the protection member according to the embodiment of the present invention.

Description of the main element symbols:

kitchen appliance 100, organic molecule sensor 200, organic molecule 201, oil smoke particle 202;

a baffle assembly 10;

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 oil baffle ring 551, the oil guiding groove 56, the positioning pin 57, 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, the present invention provides a kitchen appliance 100. Kitchen appliance 100 includes air duct system and organic matter molecule sensor 200, and air duct system is equipped with fan subassembly 21, and fan subassembly 21 includes spiral case 22 and establishes fan 23 in spiral case 22, and organic matter molecule sensor 200 installs at air duct system, and organic matter molecule sensor 200 is used for detecting the organic matter molecule concentration in the air duct system.

The kitchen appliance 100 of the present embodiment is suitable for being mounted on a range of a home kitchen, and is also suitable for a large kitchen of 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, 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.

In the kitchen appliance 100 of the above embodiment, the organic molecule sensor 200 is used to detect the concentration of the organic molecules 201, and the concentration of the organic molecules can be subsequently used as a judgment basis for the concentration of the oil smoke, so that the kitchen appliance 100 can be automatically controlled, and the convenience in use of a user is improved.

The utility model discloses in, can be according to the operation of organic matter molecule 201 concentration control kitchen appliance 100. Specifically, in the embodiment of the present invention, controlling the operation of the kitchen appliance 100 includes: controlling the operation of the fan 23 (for example, controlling the voltage, current, power, rotation speed, air volume, etc. of the fan 23), controlling the panel of the kitchen appliance 100 to open and close, lifting, controlling the kitchen appliance 100 to alarm, etc. In some embodiments, the kitchen appliance 100 can include a movable panel for opening and closing a smoking port of the kitchen appliance 100, and the movement of the panel can include rotation and translation. The alarm may be an audible and visual alarm, such as may be emitted by a display screen, indicator lights and/or a speaker of the kitchen appliance 100. In the example of the present invention, the air volume of the fan 23 is controlled as an example.

And the operation of the fan 23 is controlled according to the concentration of the organic molecules 201, so that the fan 23 can provide proper air volume to absorb the oil smoke particles 202, the effect of absorbing the oil smoke particles 202 is good, and the accuracy is high. 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.

Specifically, the organic molecule sensor 200 may be a VOC (volatile organic compound) sensor. In the illustrated embodiment, the kitchen appliance 100 includes a baffle assembly 10, a box 20 and a check valve 30, 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 check valve 30 is connected to a smoke tube 24, the baffle assembly 10 is provided with a smoke collecting chamber (not shown), the air duct system includes an air duct of the smoke collecting chamber, an air duct of the volute 22, an air duct of the check valve 30 and an air duct of the smoke tube 24, the organic molecule sensor 200 is mounted on at least one of the smoke collecting chamber, 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 an organic molecule 201 in the at least one air duct of the smoke collecting chamber, the volute 22, the check.

Specifically, the kitchen appliance 100 guides cooking fumes generated in a kitchen to the smoke collecting cavity, the fan assembly 21, the check valve 30, the box 20 and the smoke tube 24 through a smoke suction port (not shown) of the smoke collecting cavity, and the organic molecule sensor 200 may be disposed on at least one of the smoke tube 24, the check valve 30, the box 20 and the smoke collecting cavity, that is, the organic molecule sensor 200 may be disposed on one of the smoke tube 24, the check valve 30, the box 20 and the smoke collecting cavity, two of the smoke tube 24, the check valve 30, the box 20 and the smoke collecting cavity, three of the smoke tube 24, the check valve 30, the box 20 and the smoke collecting cavity, and all of the three of the smoke tube 24, the check valve 30, the box 20 and the smoke collecting cavity. The organic molecule sensor 200 is provided at any one or more of the above-described positions, and can realize a technical scheme of controlling the level of the air volume of the fan 23 of the kitchen appliance 100 by detecting a signal of the concentration value of the organic molecule 201 contained in the oil smoke concentration. In some embodiments, in the case that the organic molecule sensor 200 is installed in two or more of the smoke collection chamber, the spiral case 22, the check valve 30 and the smoke pipe 24, the kitchen appliance 100 is configured to process the concentration of the organic molecules 201 output by the two or more organic molecule sensors 200 to obtain a calculated value, and control the kitchen appliance 100 according to the calculated value. In this way, the concentration of the oil smoke in the kitchen appliance 100 can be accurately determined.

Specifically, in the illustrated embodiment, the organic molecule sensors 200 are installed on the smoke collecting chamber, the spiral case 22, the check valve 30 and the smoke pipe 24, the kitchen appliance 100 can collect output data of four organic molecule sensors 200 and convert the output data into digital signals to obtain four values, and the kitchen appliance 100 processes the four values to obtain a calculated value, where the calculated value can represent the current oil smoke concentration of the kitchen appliance 100.

In some embodiments, the calculated value is an average of the concentrations of organic molecules 201 output by two or more organic molecule sensors 200. Thus, the calculation method is simple.

Specifically, when the kitchen appliance 100 is installed with two organic molecule sensors 200, the calculated value is an average value of output data of the two organic molecule sensors 200; when the kitchen appliance 100 is mounted with three organic molecule sensors 200, the calculated value is an average value of output data of the three organic molecule sensors 200, or the like. It is understood that in other embodiments, the calculated value may be other values, for example, a weighting manner (for example, adding a weighting coefficient) is adopted to allocate a ratio of the output data of each organic molecule sensor 200 to the calculated value, so that the weight of the output data of each organic molecule sensor 200 can be set according to the specific situation of the oil smoke distribution, so as to better fit the actual application scenario in the actual use.

It can be understood that, in an example, the organic molecule sensor 200 is disposed at an air outlet duct position of the volute 22 of the box 20 in the kitchen appliance 100, the organic molecule sensor 200 detects a concentration value signal of the organic molecule 201, the kitchen appliance 100 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 operation of the kitchen appliance 100 according to a concentration range in which the digital signal is located, such as controlling the air volume of the fan 23, and displays a 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, the kitchen appliance 100 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 performs an operation on the data values of the two organic molecule sensors 200 to obtain an average value of the data detected by the two organic molecule sensors 200, and controls the operation of the kitchen appliance 100 according to the obtained average value of the concentration values of the organic molecules 201, such as controlling the air volume of the fan 23, and performing a gear display. And so on.

Referring to fig. 2, in some embodiments, the kitchen appliance 100 includes a driving board 40, and the driving board 40 is connected to the organic molecule sensor 200 and the blower 23.

Specifically, the kitchen appliance 100 is provided therein with a driving plate 40, the driving plate 40 is used for controlling the operation of the fan 23 according to the concentration of the organic molecules 201, and the driving plate 40 may be provided in the housing of the baffle plate assembly 10, for example. The driving board 40 may include a circuit board 42, and electrical components such as a processor (e.g., MCU) and a memory installed on the circuit board 42, where the processor 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, namely the rotating speed of the fan 23 is controlled so as to control the air volume of the fan 23.

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.

Referring to fig. 3, 4 and 5, in some embodiments, the kitchen appliance 100 is preset with at least three concentration ranges, each corresponding 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 where the organic molecules 201 are located and the air volume corresponding to the concentration range.

Specifically, in one example, when the user continues the cooking process for 180 seconds, 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 versus time. The vertical axis AD value of the two-dimensional curve (the value obtained by converting the analog signal output from the organic molecule sensor into a digital signal) is in direct proportion to 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.

Referring to fig. 4 and 5, the driving board 40 of the kitchen appliance 100 converts the analog signal detected by the organic molecule sensor 200 into a digital signal through 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 through the concentration value of the organic molecule 201. In one example, the correspondence relationship between the oil smoke concentration and the air volume of the fan 23 can be divided into at least three concentration ranges (i.e., at least three sections), and the illustrated embodiments are three: (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 (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 [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 at this time, the display 41 displays that the gear number of the fan 23 is medium. The organic molecule sensor 200 detects that the concentration value of the organic molecule 201 is [18000, 20000 ]]Time, defined as high oil smoke, rapidly accelerates to the maximum wind volume of 24m of the kitchen appliance 100³Min, 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. Fast response to large air quantity in high oil smoke, preventing oil smoke from escaping and guaranteeing human bodyThe health is realized, and the user experience is improved.

It should be noted that the specific numerical values listed above are only for convenience of describing the implementation of the present invention, and should not be construed as limiting the present invention. In other examples or embodiments, other values may also be used.

Referring to fig. 6 and 7, in some embodiments, the kitchen appliance 100 includes a circuit board 42 and a protection element 50, the organic molecule sensor 200 and the protection element 50 are disposed on the circuit board 42, the protection element 50 defines a receiving hole 51, and the organic molecule sensor 200 is disposed in the receiving hole 51.

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 an accommodating hole 51 with one sealed end is formed inside the protection element 50, the accommodating hole 51 is communicated with the air duct of the kitchen appliance 100, the oil smoke particles 202 and the organic molecules 201 on the air duct of the kitchen appliance 100 enter the accommodating hole 51 through diffusion, and the organic molecule sensor 200 in the accommodating 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 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 protection member 50 may have a cylindrical shape, and a positioning pin 57 is protruded at one end of the protection member 50 for mounting and positioning the protection member 50 to the kitchen appliance 100. The receiving hole 51 may be a cylindrical hole. 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. 7 to 9, in some embodiments, a shielding portion 55 is disposed on an inner wall of the receiving hole 51 and located at a front end of the organic molecule sensor 200. Thus, through the shielding portion 55, under the condition that the gas flow fluctuation in the air duct of the kitchen appliance 100 can cause some oil smoke particles to enter the accommodating hole 51, after the buffering effect of the shielding portion 55, most of the oil smoke particles 202 can be blocked by the shielding portion, so that the pollution of the oil smoke on the organic matter molecular sensor 200 is reduced, the sensitivity of the organic matter molecular sensor 200 can be maintained, and the organic matter molecular sensor 200 cannot be directly polluted.

Specifically, the shielding portion 55 is formed with a slinger 551, and in the embodiment of fig. 7 and 8, the number of slingers 551 is plural, and the plural slingers 551 are provided along the longitudinal direction T of the housing hole 51. The plurality of oil deflectors 551 on the inner wall of the accommodating hole 51 can form a plurality of zigzag structures, because the fluctuation of the air flow in the air duct can make some particles enter the accommodating hole 51, and after the buffering action of the oil deflectors 551, the particles can be blocked by the zigzag structures.

In the embodiment of fig. 9, the oil deflector ring 551 is spirally protruded on the inner wall of the housing hole 51. The oil deflector ring 551 has a spiral sawtooth structure inside the receiving hole 51 for blocking the oil smoke particles 202. The port of the bell-mouth spiral oil deflector ring 551 far away from the circuit board 42 is lower than the port 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 some embodiments, the inner wall of the receiving hole 51 is opened with an oil guiding groove 56 connected to the shielding portion 55. 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, the soot particles 202 are attached to the sawtooth structure after entering the receiving hole 51, and then condensed into an oil-water mixture, and the oil-water mixture is discharged out of the receiving hole 51 through the oil guiding groove 56 at the bottom of the receiving hole 51, so as to prevent the accumulation of the pollutants 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 some embodiments, the oil guide groove 56 is sloped downward in a direction away from the circuit board 42. Therefore, the oil stain can be discharged more conveniently.

Specifically, the oil guide groove 56 is designed to have a structure with a port lower in height inside so as to facilitate the discharge of oil dirt. The oil guide groove 56 can be any rectangular cavity, such as a square cavity, a round cavity, etc.

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 utility model provides a kitchen appliance, its characterized in that includes air duct system and organic matter molecule sensor, air duct system is equipped with the fan subassembly, the fan subassembly includes the spiral case and establishes fan in the spiral case, organic matter molecule sensor installs air duct system, organic matter molecule sensor is used for detecting organic matter molecule concentration in the air duct system.

2. The kitchen appliance of claim 1, wherein the kitchen appliance includes a drive board connecting the organic molecule sensor and the fan.

3. The kitchen appliance according to claim 2, wherein a corresponding relationship between the air volume and the gear of the fan is preset in the kitchen appliance, the kitchen appliance comprises a display part, and the drive board is connected with the display part and is used for controlling the air volume of the fan according to the concentration of the organic molecules and controlling the display part to display the gear corresponding to the air volume of the fan.

4. The kitchen appliance according to claim 2, 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, and the drive plate is used for controlling the kitchen appliance according to the concentration range of the organic matter molecule concentration and the air volume corresponding to the concentration range.

5. The kitchen appliance of claim 1, wherein the kitchen appliance comprises a circuit board and a protection member, the organic molecule sensor and the protection member are disposed on the circuit board, the protection member defines a receiving hole, and the organic molecule sensor is disposed in the receiving hole.

6. The kitchen appliance of claim 5, wherein a diameter of the shield to an aperture ratio of the receiving hole is greater than or equal to 5.5.

7. The kitchen appliance according to claim 5, 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.

8. The kitchen appliance according to claim 5, wherein the inner wall of the receiving hole is provided with a shielding part located at the front end of the organic molecule sensor.

9. The kitchen appliance according to claim 8, wherein the inner wall of the receiving hole is provided with an oil guiding groove connected with the shielding portion.

10. The kitchen appliance according to claim 9, wherein the oil-guiding groove is horizontally arranged or is inclined downwards in a direction away from the circuit board.

11. The kitchen appliance according to claim 1, wherein the kitchen appliance comprises a flow guide plate assembly, a box body and a check valve, the box body is arranged on the flow guide plate assembly, the fan assembly is arranged in the box body, the check valve is connected to the top of the box body, the check valve is connected with a smoke tube, the flow guide plate assembly is provided with a smoke collecting cavity, the air duct system comprises an air duct of the smoke collecting cavity, an air duct of the volute, an air duct of the check valve and an air duct of the smoke tube, the organic matter molecular sensor is arranged on at least one of the smoke collecting 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 air duct of the smoke collecting cavity, the volute, the check valve and the smoke tube.

12. The kitchen appliance according to claim 11, wherein in a case that the organic molecule sensor is installed in two or more of the smoke collecting chamber, the volute, the check valve and the smoke pipe, the kitchen appliance is configured to process concentrations of organic molecules output by the two or more organic molecule sensors to obtain a calculated value, and control the kitchen appliance according to the calculated value.