Kitchen appliance

Abstract

The invention discloses a kitchen appliance. The kitchen appliance comprises a body; an infrared gas sensing device, wherein the infrared gas sensing device is arranged on the body; the controller is connected with the infrared gas sensing device, and the controller is used for generating a judgment result according to a detection result of the infrared gas sensing device; and starting to work, changing the working power and stopping the switching of the working state according to the judgment result. According to the invention, the infrared gas sensing device is arranged, so that positions of cooking utensils, cookware and the like generating oil fume can be detected, whether the oil fume is generated or not and the concentration of the oil fume are judged according to the detection result of the infrared gas sensing device, and the working state of the kitchen appliance is controlled according to the judgment result.

Description

[0001] This case is a divisional application of application number 202110516466.7, application date May 12, 2021, and invention name “Infrared gas sensing device and kitchen appliance” Technical Field

[0002] The present invention relates to the technical field of household appliances, and in particular to a kitchen appliance. Background Art

[0003] Infrared gas sensors are based on the selective absorption characteristics of different gas molecules in the near-infrared spectrum. They use the relationship between gas concentration and absorption intensity to identify gas components and determine their concentrations. Therefore, when using infrared gas sensors in kitchen appliances, they must be positioned directly against fume-generating areas, such as pots and stoves, to ensure timely gas detection and subsequent identification.

[0004] However, existing kitchen appliances vary in model size, and therefore the installation locations of infrared gas sensors may also vary. This necessitates the use of different infrared gas sensor devices to ensure that the infrared gas sensors are positioned precisely against smoke-generating areas such as pots and stoves. Producing a custom infrared gas sensor mold for each kitchen appliance model results in low utilization and high costs. Summary of the Invention

[0005] The invention provides an infrared gas sensing device and a kitchen appliance.

[0006] The infrared gas sensing device according to the embodiment of the present invention includes: a housing; a bracket detachably connected to the housing and inclined at a preset angle relative to the housing; and an infrared gas sensor detachably mounted on the bracket.

[0007] In some embodiments, the predetermined angle is selected from the range [0, 180].

[0008] In some embodiments, the bracket is provided with a limiting protrusion, and the shell is provided with a limiting groove that cooperates with the limiting protrusion, and the limiting protrusion cooperates with the limiting groove to limit the bracket.

[0009] In some embodiments, the shell includes a cover body and a clamping ring, the cover body abuts the bracket, one end of the clamping ring is detachably connected to the cover body, and the other end of the clamping ring is provided with a first abutting ring protruding inward, and the first abutting ring cooperates with the cover body to jointly clamp the bracket.

[0010] In some embodiments, one side of the infrared gas sensor abuts against the bracket, and the other side of the infrared gas sensor abuts against the first abutting ring, and the first abutting ring clamps the bracket together with the cover through the infrared gas sensor.

[0011] In some embodiments, a matching groove is formed on a side of the infrared gas sensor close to the first abutting ring and / or on a lower surface of the first abutting ring;

[0012] The housing further includes a first sealing ring installed in the matching groove, and the infrared gas sensor abuts against the lower surface of the first abutting ring through the first sealing ring.

[0013] In certain embodiments, a side of the bracket close to the infrared gas sensor is provided with an accommodating groove, and the infrared gas sensor is installed in the accommodating groove.

[0014] In some embodiments, the cover body includes a front cover and a middle cover, the front cover is provided with a through hole, the clamping ring passes through the through hole, one end of the clamping ring located in the front cover is provided with a second abutment ring protruding outward, the side of the second abutment ring close to the front cover abuts against the inner surface of the front cover, and the side of the second abutment ring away from the front cover abuts against the middle cover, the middle cover and the front cover jointly clamp the second abutment ring, and the middle cover and the front cover are detachably connected along the force direction of clamping the second abutment ring.

[0015] In some embodiments, the cover body further includes a rear cover, which is detachably connected to the front cover and together with the front cover forms an accommodating cavity for accommodating the middle cover.

[0016] The present invention further provides a kitchen appliance, comprising: a body, and the infrared gas sensor device according to any one of the above embodiments, wherein the infrared gas sensor device is installed on the body.

[0017] The infrared gas sensing device of the embodiment of the present invention is provided with a bracket which is tilted at a preset angle relative to the shell. The bracket is detachably connected to the shell, and the infrared gas sensor is arranged on the bracket, so that the infrared gas sensor can be tilted at a preset angle with the shell together with the bracket. By arranging that the infrared gas sensor and the bracket can also be detachably connected, the effect of being able to easily replace the bracket with different preset angles is achieved, thereby conveniently realizing the adjustment of the tilt angle of the infrared gas sensor, improving the mold utilization rate and reducing the cost.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0020] Figure 1 is a perspective view of an infrared gas sensing device according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A top view of an infrared gas sensing device;

[0022] Figure 3 for Figure 2 The cross-sectional view of the infrared gas sensing device along AA;

[0023] Figure 4 for Figure 2 A cross-sectional view of the infrared gas sensing device along BB;

[0024] Figure 5 An exploded view of an infrared sensor device according to an embodiment of the present invention;

[0025] Figure 6 Schematic diagram of a kitchen appliance according to an embodiment of the present invention.

[0026] Main feature reference numerals:

[0027] Label structure Label structure 100 Infrared gas sensing device 1311 Matching groove 10 case 132 Second abutment ring 11 Limiting groove 14 First sealing ring 12 Cover 15 Second sealing ring 121 front cover 20 bracket 1211 through-hole 21 Limiting protrusion 122 Middle cover 22 Accommodating groove 123 back cover 30 Infrared gas sensor 124 Accommodation cavity 1000 kitchen appliances 13 Clamping ring 500 Ontology 131 First abutment ring DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, or mutual communication; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0032] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0033] See also Figures 1 to 6 In one embodiment of the present invention, an infrared gas sensing device 100 is provided for use in a kitchen appliance 1000. The infrared gas sensing device 100 includes a housing 10, a bracket 20, and an infrared gas sensor 30. The bracket 20 is detachably connected to the housing 10 and tilted relative to the housing 10 at a predetermined angle α. The infrared gas sensor 30 is detachably mounted on the bracket 20.

[0034] The infrared gas sensing device 100 of the embodiment of the present invention is provided with a bracket 20 which is tilted at a preset angle α relative to the shell 10. The bracket 20 is detachably connected to the shell 10, and the infrared gas sensor 30 is arranged on the bracket 20, so that the infrared gas sensor 30 can be tilted at a preset angle α with the shell 10 together with the bracket 20. By setting the infrared gas sensor 30 to be detachably connected to the bracket 20, the effect of conveniently replacing the bracket 20 with different preset angles α is achieved, thereby conveniently realizing the adjustment of the tilt angle of the infrared gas sensor 30, improving the mold utilization rate and reducing the cost.

[0035] Specifically, the housing 10 is used to support the bracket 20. The housing 10 can be made of materials such as plastic and metal, as long as the material is sufficient to support the bracket 20, and there is no specific limitation here. The housing 10 can have many shapes, such as a rectangular parallelepiped and a sphere, and can be adjusted to meet the needs of installation and production convenience, and there is no specific limitation here.

[0036] The bracket 20 is used to carry the infrared gas sensor 30 , and is tilted relative to the housing 10 at a preset angle α, so that the infrared gas sensor 30 mounted on the bracket 20 can also be tilted relative to the housing 10 .

[0037] The preset angle α is set according to factors such as the model of the kitchen appliance 1000 and the installation location of the infrared gas sensor device 100, and ensures that the infrared gas sensor device 100 can be aimed at the location where oil smoke is generated by pots, stoves, etc., so that the infrared gas sensor device 100 can detect the generation of oil smoke in a timely manner.

[0038] It is worth noting that the bracket 20 is tilted at a preset angle α relative to the shell 10, which means that the surface of the bracket 20 used to support the infrared gas sensor 30 is set at an angle of the preset angle α relative to the surface where the bracket 20 is connected to the shell 10.

[0039] There are many ways to detachably connect the bracket 20 to the housing 10. For example, the housing 10 is provided with a threaded hole, and the bracket 20 is provided with a threaded section that cooperates with the threaded hole; another example is that the bracket 20 and the housing 10 are connected by bolts; another example is that the housing 10 is provided with a groove to accommodate the bracket 20, and the direction from the groove mouth to the groove bottom is the installation direction of the bracket 20 and the housing 10, the bracket 20 is provided with a protruding snap-fitting protrusion in a direction perpendicular to the installation direction, and the groove is provided with a recessed snap-fitting groove in a direction perpendicular to the installation direction, and the groove is also provided with an installation groove along the installation direction. When installing the bracket 20 and the housing 10, the snap-fitting protrusion is extended into the groove through the installation groove, and the bracket 20 is rotated so that the snap-fitting protrusion cooperates with the snap-fitting groove; when separating the bracket 20 and the housing 10, the bracket 20 is rotated so that the snap-fitting protrusion is separated from the snap-fitting groove, and the snap-fitting protrusion is removed from the groove through the installation groove. There are many other ways to detachably connect the bracket 20 and the housing 10, which are not listed here one by one.

[0040] The infrared gas sensor 30 is a gas sensing device that uses the near-infrared spectral selective absorption characteristics of different gas molecules, identifying gas components and determining their concentrations using the relationship between gas concentration and absorption intensity. The infrared gas sensor 30 may include a probe that detects gas analysis through reflected light received by the probe. The infrared gas sensor 30 may also include an infrared emitter and a probe, with the infrared emitter emitting infrared light and the probe detecting the reflected light from the gas. The specific structure of the infrared gas sensor 30 is not specifically limited here; it only needs to be able to identify gas components and determine gas concentration.

[0041] There are many ways to detachably connect the infrared gas sensor 30 to the bracket 20. For example, the bracket 20 includes a frame and a buckle cover. The frame is provided with a threaded section at one end close to the infrared gas sensor 30. The buckle cover is provided with a groove for accommodating the infrared gas sensor 30. The groove wall is provided with an internal thread corresponding to the threaded section. The buckle cover is buckled onto the frame. The buckle cover and the frame together form a cavity for accommodating the infrared gas sensor 30. The infrared gas sensor 30 is clamped by the buckle cover and the frame. The buckle cover is provided with a detection hole for the infrared gas sensor 30 to detect the gas composition of the external environment through the detection hole. For another example, the infrared gas sensor 30 and the bracket 20 are detachably connected by bolts. Of course, there are many other ways to detachably connect the infrared gas sensor 30 to the bracket 20, which will not be described in detail here.

[0042] In certain embodiments, see Figure 4, the preset angle α is selected from the range [0, 180]. Specifically, the preset angle α of the bracket 20 can be 0°, 15°, 30°, 45°, 50°, 100°, 180°, etc., and is adjusted according to the location where the housing 10 is installed in the kitchen appliance 1000 and the location where the stove, pot, etc. around the kitchen appliance 1000 generate oil smoke. For example, when the housing 10 is installed directly above and facing the location where the stove, pot, etc. around the kitchen appliance 1000 generate oil smoke, the preset angle α of the bracket 20 can be 0°. For another example, when the housing 10 is installed on one side of the kitchen appliance 1000 and forms a 30° angle with the location where the stove, pot, etc. generate oil smoke, the preset angle α of the bracket 20 can be 30°.

[0043] In certain embodiments, see Figure 3 and Figure 5 The bracket 20 is provided with a limiting protrusion 21, and the housing 10 is provided with a limiting groove 11 that cooperates with the limiting protrusion 21. In this way, the limiting protrusion 21 extends into the limiting groove 11 and cooperates with the limiting groove 11 to achieve the limitation of the bracket 20. The bracket 20 can realize a detachable connection between the bracket 20 and the shell 10 through the cooperation of the limiting protrusion 21 and the limiting groove 11. For example, the limiting protrusion 21 and the limiting groove 11 are interference fit; for example, the limiting protrusion 21 is arranged in a "V" shape, and the limiting protrusion 21 can produce elastic deformation. The connection between the two side edges of the limiting protrusion 21 faces the limiting groove 11. When the bracket 20 is matched with the shell 10, the limiting protrusion 21 is extended into the limiting groove 11, so that the limiting protrusion 21 produces elastic deformation and is stuck in the limiting groove 11. When the bracket 20 is separated from the shell 10, force is applied to the openings on both sides of the limiting protrusion 21, so that the limiting protrusion 21 produces elastic deformation, and the limiting protrusion 21 is separated from the limiting groove 11. The bracket 20 and the housing 10 can also be detachably connected by other means, and the connection between the bracket 20 and the housing 10 is further achieved by the cooperation between the limiting protrusion 21 and the limiting groove 11, which is not specifically limited here.

[0044] The limiting protrusion 21 and the bracket 20 can be integrally formed, or they can be separately formed. In this case, the limiting protrusion 21 and the bracket 20 can be fixedly connected by welding, bonding, etc. The limiting protrusion 21 and the bracket 20 can also be detachably connected by threaded connection, bolt connection, etc. The formation method of the limiting protrusion 21 and the bracket 20 can be adjusted as needed, and no specific restrictions are made here.

[0045] The limiting groove 11 is a depression provided in the shell 10. It can be formed by a groove with a groove bottom provided in the shell 10, or it can be formed by a hole provided through the shell 10. As long as it can cooperate with the limiting protrusion 21 to limit the bracket 20, no specific restrictions are made here.

[0046] In certain embodiments, see Figures 1 to 5 The housing 10 includes a cover 12 and a clamping ring 13. The cover 12 abuts against the bracket 20. One end of the clamping ring 13 is detachably connected to the cover 12. The other end of the clamping ring 13 is provided with a first abutting ring 131 protruding inward. The first abutting ring 131 cooperates with the cover 12 to clamp the bracket 20. When installing the bracket 20, the clamping ring 13 is connected to the cover 12 to clamp the bracket 20, thereby achieving the connection between the bracket 20 and the housing 10. When separating the bracket 20 from the housing 10, the clamping ring 13 is separated from the cover 12, eliminating the limit on the bracket 20, thereby achieving the separation of the bracket 20 from the housing 10. This arrangement can effectively protect the bracket 20 and prevent it from being contaminated by gases such as oil smoke and water mist. It can also conveniently remove the clamping ring 13 and the bracket 20 for maintenance, cleaning, or replacement.

[0047] There are many ways to detachably connect the clamping ring 13 and the cover body 12. For example, the cover body 12 and the clamping ring 13 are both cylindrical, and a threaded section is provided at one end of the cover body 12 close to the clamping ring 13. The inner wall of the clamping ring 13 is provided with an internal thread, and the internal thread cooperates with the threaded section to realize the detachable connection between the cover body 12 and the clamping ring 13; for another example, a snap ring is convexly provided on the inner wall of the clamping ring 13, and a snap groove that cooperates with the snap ring is concavely provided on the cover body 12, and the snap ring cooperates with the snap groove to realize the detachable connection between the cover body 12 and the clamping ring 13.

[0048] It is worth noting that the shape of the clamping ring 13 can be a circular ring structure, a square ring structure, or the like, and is not specifically limited here. The shape of the first abutting ring 131 can be circular, square, or the like, and the shape of the first abutting ring 131 can also be an inner circle with an outer square, or an inner square with an outer circle, or the like. The inner shape of the first abutting ring 131 is not specifically limited here, as long as it can clamp the bracket 20 together with the cover 12.

[0049] The other end of the clamping ring 13 is provided with a first abutment ring 131 protruding inward, which means that the first abutment ring 131 is located near the end of the clamping ring 13 away from the cover body 12. It can be the terminal end of the clamping ring 13 away from the cover body 12, or it can be a position with a certain distance from the terminal end of the clamping ring 13 away from the cover body 12. As long as the first abutment ring 131 is roughly located near the end of the clamping ring 13 away from the cover body 12 and can clamp the bracket 20 together with the cover body 12, the positional relationship between the first abutment ring 131 and the clamping ring 13 is not specifically limited here.

[0050] For further information, see Figures 3 to 5One side of the infrared gas sensor 30 abuts against the bracket 20, while the other side of the infrared gas sensor 30 abuts against the first abutting ring 131. The first abutting ring 131 clamps the bracket 20 through the infrared gas sensor 30 and the cover 12. With this arrangement, the clamping ring 13 and the cover 12 together clamp the infrared gas sensor 30 and the bracket 20. Furthermore, the clamping ring 13 and the cover 12 can also cover the infrared gas sensor 30 to a certain extent, protecting the infrared gas sensor 30 and reducing the probability of the infrared gas sensor 30 being contaminated by external gases such as oil smoke and water mist.

[0051] The surface where the infrared gas sensor 30 abuts against the bracket 20 and the surface where the infrared gas sensor 30 abuts against the first abutting ring 131 should be opposite surfaces. At this time, the first abutting ring 131 and the bracket 20 jointly clamp the infrared gas sensor 30, that is, the infrared gas sensor 30 can realize a detachable connection between the infrared gas sensor 30 and the bracket 20 through the cooperation of the first abutting ring 131 and the bracket 20. The infrared gas sensor 30 can also be detachably connected to the bracket 20 in other ways, and auxiliary positioning can be performed through the cooperation of the first abutting ring 131 and the bracket 20.

[0052] The infrared gas sensor 30 can be provided with a protruding abutment protrusion, which cooperates with the first abutment ring 131; the infrared gas sensor 30 can also be arranged in a cylindrical shape, and the first abutment ring 131 abuts against the side of the infrared gas sensor 30 away from the bracket 20. There are many ways to abut the infrared gas sensor 30 and the first abutment ring 131, and they can be achieved as long as they can be achieved, so they will not be elaborated here.

[0053] It is worth noting that the clamping ring 13 should be provided with a through hole for the infrared gas sensor 30 to detect the external environment. This through hole can be formed by the internal hollow space of the clamping ring 13 when the clamping ring 13 is annular, or it can be formed by penetrating the ring wall of the clamping ring 13. There are many ways to form a through hole, which are not listed here. When the bracket 20 is replaced so that the tilt angle of the infrared gas sensor 30 is different, the clamping ring 13 should also be adjusted or replaced according to the angle of the infrared gas sensor 30 so that the infrared gas sensor 30 is not blocked by the clamping ring 13 when detecting the external environment.

[0054] For further information, see Figure 3A mating groove 1311 is formed on one side of the infrared gas sensor 30 adjacent to the first abutting ring 131 and / or on the lower surface of the first abutting ring 131. The housing 10 further includes a first sealing ring 14, which is mounted within the mating groove 1311. The infrared gas sensor 30 abuts the lower surface of the first abutting ring 131 via the first sealing ring 14. This arrangement allows the infrared gas sensor 30 to abut the first abutting ring 131 via the first sealing ring 14, creating a tighter abutment between the infrared gas sensor 30 and the first abutting ring 131, effectively preventing gases such as oil smoke and water mist from entering the abutment between the infrared gas sensor 30 and the first abutting ring 131 and contacting the infrared gas sensor 30 and the bracket 20.

[0055] The mating groove 1311 can be set on the infrared gas sensor 30, and the mating groove 1311 can also be set on the first abutment ring 131. The mating groove 1311 can also be formed by the infrared gas sensor 30 and the first abutment ring 131. The formation method of the mating groove 1311 is adjusted according to factors such as sealing effect and production convenience, and no specific restrictions are made here.

[0056] It is worth mentioning that the cross section of the first sealing ring 14 can be circular, square, etc., which is not specifically limited here. The shape of the matching groove 1311 is adapted to the shape of the first sealing ring 14 and will not be described in detail here.

[0057] In certain embodiments, see Figure 3 The side of the bracket 20 close to the infrared gas sensor 30 is provided with a receiving groove 22, and the infrared gas sensor 30 is installed in the receiving groove 22. In this way, the receiving groove 22 cooperates with the infrared sensor to limit the infrared sensor, making the connection between the infrared sensor and the bracket 20 more stable.

[0058] The infrared sensor can have many shapes, such as a rectangular parallelepiped, a cylinder, etc., and is not specifically limited here. The shape of the accommodating groove 22 is adapted to the shape of the infrared gas sensor 30. When the infrared gas sensor 30 is in the shape of a cylinder, the shape of the accommodating groove 22 is a cylindrical groove adapted to the shape of the infrared gas sensor 30. At this time, the infrared gas sensor 30 is provided with a mating protrusion along its radial direction, and the accommodating groove 22 is provided with a groove that cooperates with the mating protrusion along the installation direction of the infrared gas sensor 30, so that the infrared gas sensor 30 is limited by the mating protrusion and the groove, preventing the infrared gas sensor 30 from rotating in the groove, and increasing the stability of the connection between the infrared gas sensor 30 and the bracket 20.

[0059] In certain embodiments, see Figures 3 to 5The cover body 12 includes a front cover 121 and a middle cover 122. The front cover 121 is provided with a through hole 1211. The clamping ring 13 is passed through the through hole 1211. One end of the clamping ring 13 located inside the front cover 121 is provided with a second abutting ring 132 protruding outward. The surface of the second abutting ring 132 close to the front cover 121 abuts against the inner surface of the front cover 121, and the surface of the second abutting ring 132 away from the front cover 121 abuts against the middle cover 122. The middle cover 122 and the front cover 121 jointly clamp the second abutting ring 132. The middle cover 122 and the front cover 121 are detachably connected along the direction of the force applied to clamp the second abutting ring 132. The front cover 121 cooperates with the middle cover 122 to achieve a detachable connection between the clamping ring 13 and the cover body 12. When installing the clamping ring 13, the clamping ring 13 is inserted into the through hole 1211 and the second abutting ring 132 abuts against the front cover 121. The front cover 121 is then connected to the middle cover 122, so that the front cover 121 and the middle cover 122 clamp the second clamping ring 13, thereby limiting the position of the clamping ring 13. When removing the clamping ring 13, the front cover 121 is separated from the middle cover 122, and the clamping ring 13 is separated from the through hole 1211, thereby removing the position limit of the clamping ring 13. This arrangement facilitates the replacement, maintenance, and cleaning of the clamping ring 13, the front cover 121, and the middle cover 122.

[0060] The middle cover 122 may include a circuit board and various components of the infrared gas sensing device 100 . The various components are mounted on the circuit board and electrically connected to the circuit board. The infrared gas sensor 30 is electrically connected to the circuit board.

[0061] There are many ways to detachably connect the middle cover 122 and the front cover 121. For example, the front cover 121 is provided with a protrusion, and the middle cover 122 is provided with a stepped groove. The protrusion and the groove are snap-fitted to achieve a detachable connection between the middle cover 122 and the front cover 121. For another example, the front cover 121 is provided with a protrusion, and the middle cover 122 is provided with a connecting hole. The protrusion is passed through the connecting hole and abuts against the middle cover 122. I will not list them one by one here.

[0062] It is worth adding that the shell 10 can also include a second sealing ring 14, and the clamping ring 13 abuts against the inner surface of the front cover 121 through the second sealing ring 14, so that the clamping ring 13 and the second sealing ring 14 abut more firmly, reducing the probability of gases such as oil smoke and water mist entering through the abutment and contacting the part of the clamping ring 13 located inside the front cover 121.

[0063] For further information, see Figures 3 to 5 The cover body 12 further includes a rear cover 123, which is detachably connected to the front cover 121 and together with the front cover 121 forms a receiving cavity 124 for receiving the middle cover 122. In this manner, the rear cover 123 cooperates with the front cover 121 to reduce the probability of the middle cover 122 being contaminated by gases such as oil smoke and water mist.

[0064] There are many ways to detachably connect the front cover 121 and the back cover 123. For example, the back cover 123 is provided with a hole, and the front cover 121 is provided with a protrusion along the direction close to the back cover 123. The end of the protrusion away from the front cover 121 includes an elastic member arranged in a "V" shape, and the tip of the elastic member faces the hole. The elastic member produces elastic deformation during the insertion process of the hole, and the elastic deformation is restored after passing through the hole, thereby realizing the detachable and washable connection between the front cover 121 and the back cover 123; for example, the front cover 121 is provided with two clamping blocks arranged opposite to each other along the direction close to the back cover 123. The two clamping blocks are elastically deformable. Force is applied to the two clamping blocks so that the two clamping blocks are elastically deformed in a direction away from each other and the back cover 123 is installed between the two clamping blocks. The force applied to the two clamping blocks is canceled so that the two clamping blocks clamp the back cover 123, thereby realizing the detachable connection between the front cover 121 and the back cover 123. I will not list them one by one here.

[0065] The present invention also proposes a kitchen appliance 1000. Specifically, the kitchen appliance 1000 includes but is not limited to an appliance with an oil fume exhaust function, such as an oil fume device and an integrated stove. In the illustrated embodiment, the kitchen appliance 1000 is described by taking an oil fume device as an example. Figure 6 The kitchen appliance 1000 can be a top-discharge kitchen appliance, a bottom-discharge kitchen appliance, or a side-discharge kitchen appliance, without specific limitation herein. For example, taking the kitchen appliance 1000 as a range fumes device, the kitchen appliance 1000 equipped with the infrared gas sensor device 100 can determine the gas composition and gas concentration of the external environment based on the detection results of the infrared gas sensor 30, and further determine whether the external environment is generating fumes and the concentration of the fumes. This facilitates the kitchen appliance 1000 to switch between starting operation, changing operating power, and stopping operation based on the judgment results.

[0066] Specifically, the kitchen appliance 1000 includes a main body 500 and an infrared gas sensor device 100 .

[0067] The main body 500 includes, but is not limited to, components such as a housing, a deflector, a fan, and a check valve. The deflector, fan, and check valve are all mounted on the housing. Oil smoke enters the housing through the deflector. When the fan installed in the housing operates, the oil smoke is drawn into the fan under the centrifugal force of the fan and discharged from the fan's air outlet into the check valve. The check valve prevents the oil smoke from flowing back into the fan, thereby achieving oil smoke discharge. It is understood that a check valve is a valve whose opening and closing member is a circular valve disc that operates by its own weight and the pressure of the medium to prevent the backflow of the medium. The check valve can be a lift check valve or a swing check valve.

[0068] There are many ways to connect the infrared gas sensor device 100 to the body 500. The infrared gas sensor device 100 can be connected to the body 500 by means of snap connection, bolt connection, etc., or fixedly connected to the body 500 by means of bonding, welding, etc.

[0069] There are many positional relationships between the infrared gas sensor device 100 and the main body 500. The infrared gas sensor device 100 can be located in the middle, side, bottom, etc. of the main body 500. It can be adjusted according to the needs of convenient production and installation, and no specific restrictions are made here.

[0070] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0071] Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A kitchen appliance, characterized in that: The kitchen appliances include: ontology; an infrared gas sensor device, the infrared gas sensor device being mounted on the body; A controller connected to the infrared gas sensing device, the controller being configured to: generating a judgment result according to the detection result of the infrared gas sensing device; The switching of starting working, changing working power and stopping working state is performed according to the judgment result.

2. The kitchen appliance according to claim 1, characterized in that The detection results include the gas composition and gas concentration of the external environment.

3. The kitchen appliance according to claim 1, characterized in that The judgment result includes judging whether oil smoke is generated in the external environment and the concentration of the oil smoke.

4. The kitchen appliance according to claim 1, characterized in that The infrared gas sensor device is connected to the body by snap-fitting.

5. The kitchen appliance according to claim 1, characterized in that The infrared gas sensor device is located at one of the middle, side and bottom of the body.

6. The kitchen appliance according to claim 1, characterized in that The infrared gas sensing device comprises: case; a bracket, the bracket being detachably connected to the housing and being inclined at a preset angle relative to the housing; An infrared gas sensor is detachably mounted on the bracket.

7. The kitchen appliance according to claim 6, characterized in that The shell is provided with a threaded hole, and the bracket is provided with a threaded section matched with the threaded hole.

8. The kitchen appliance according to claim 6, characterized in that The shell is provided with a groove for accommodating the bracket, and the direction from the notch of the groove to the bottom of the groove is the installation direction of the bracket and the shell. The bracket is provided with a clamping protrusion along a direction perpendicular to the installation direction, and the groove is provided with a clamping groove along a direction perpendicular to the installation direction. The groove is provided with an installation groove along the installation direction, and the clamping protrusion extends into the groove through the installation groove.

9. The kitchen appliance according to claim 6, characterized in that The bracket comprises: frame; A buckle cover is provided with a groove for accommodating the infrared gas sensor, the buckle cover is buckled on the frame, the buckle cover and the frame together form a cavity for accommodating the infrared gas sensor, and the buckle cover is provided with a detection hole for the infrared gas sensor to detect the gas composition of the external environment through the detection hole.

10. The kitchen appliance according to claim 6, characterized in that The bracket is provided with a limiting protrusion, and the shell is provided with a limiting groove that cooperates with the limiting protrusion. The limiting protrusion cooperates with the limiting groove to limit the bracket.

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