Oil fume concentration measurement device and kitchen apparatus

Abstract

An oil fume concentration measurement device and a kitchen apparatus. The oil fume concentration measurement device is used in a kitchen apparatus, the kitchen apparatus comprises an air duct housing, and the air duct housing is provided with an air inlet. The oil fume concentration measurement device comprises a measurement mechanism and a mounting base, wherein a measurement end of the measurement mechanism faces the air inlet, and the measurement mechanism is used for measuring the concentration of oil fume; and the mounting base comprises a first mounting part and a second mounting part which are rotationally connected, both the first mounting part and the second mounting part can be connected to the air duct housing, and the measurement mechanism is arranged on the second mounting part.

Description

Oil fume concentration detection device and kitchen equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 2, 2024, with application number 202410003039.2, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of kitchen appliances, for example, to an oil fume concentration detection device and kitchen appliances. Background Art

[0003] With the development of technology, smart home appliances are becoming increasingly popular. As a key kitchen appliance, range hoods also need to be more intelligent in smart kitchen scenarios to meet user needs, accurately sense smoke, automatically change wind speeds, and free users' hands.

[0004] In the air duct of the range hood, the oil fume concentration is usually identified by a smoke detection module. Since the air ducts have different shapes, different air ducts need to be matched with different smoke detection modules, which increases production costs and has poor compatibility of smoke detection modules. Summary of the Invention

[0005] The present application provides an oil fume concentration detection device and kitchen equipment to solve the problem of poor compatibility of existing oil fume concentration detection devices.

[0006] An embodiment of the present application provides an oil fume concentration detection device for use in a kitchen appliance, wherein the kitchen appliance includes an air duct housing provided with an air inlet. The oil fume concentration detection device includes:

[0007] a detection mechanism, wherein a detection end of the detection mechanism faces the air inlet, and the detection mechanism is configured to detect the concentration of oil smoke;

[0008] The mounting seat includes a first mounting portion and a second mounting portion that are rotatably connected. Both the first mounting portion and the second mounting portion can be connected to the air duct shell. The detection mechanism is arranged on the second mounting portion.

[0009] In one embodiment, one of the first mounting portion and the second mounting portion includes a pivot portion, and the other includes two lugs spaced apart. The pivot portion is located between the two lugs and is rotatably connected to the lugs via a pivot shaft.

[0010] In one embodiment, at least one of the first mounting portion and the second mounting portion includes an arc-shaped connecting rod.

[0011] In one embodiment, the second mounting portion includes an arc-shaped connecting rod and a support plate. The support plate is disposed on a top surface of the arc-shaped connecting rod and extends toward the air inlet. The detection mechanism is disposed on the support plate.

[0012] In one embodiment, a plurality of first mounting holes are provided on the air duct shell at circumferential intervals around the air inlet, and second mounting holes are provided on both the first mounting portion and the second mounting portion. The second mounting holes are configured to cooperate with fasteners, and the fasteners pass through the second mounting holes and the first mounting holes in sequence and are connected to the air duct shell.

[0013] In one embodiment, the installation angle of the detection mechanism on the second installation portion is adjustable.

[0014] In one embodiment, the detection mechanism includes:

[0015] a mounting plate, one end of which is rotatably connected to the second mounting portion, the other end of which is provided with at least two first fixing holes, and the second mounting portion is provided with a second fixing hole;

[0016] A detection component is arranged on the mounting plate;

[0017] A fixing member can selectively pass through one of the first fixing holes and connect with the second fixing hole to fix the mounting plate and the second mounting portion.

[0018] In one embodiment, the detection mechanism includes:

[0019] A mounting plate, disposed on the second mounting portion;

[0020] A detection component is arranged on the mounting plate;

[0021] A limiting member is provided on the mounting plate, and a socket is provided on the detection assembly. The limiting member can extend into the socket.

[0022] In one embodiment, an oil circuit is provided on the air duct shell, and the oil circuit is connected to the oil receiving cup. The oil fume concentration detection device also includes an oil receiving pan, which is provided on the mounting seat and located below the detection mechanism. The mounting seat or the oil receiving pan is provided with an oil leakage hole that can connect the oil receiving pan and the oil circuit.

[0023] The present invention provides a kitchen appliance, including:

[0024] a housing, wherein a smoke inlet is provided on the housing and a smoke collecting chamber is formed in the housing;

[0025] An air duct shell is arranged in the casing, and an air inlet is provided on the air duct shell, and the air inlet is connected to the smoke collecting chamber;

[0026] In the above-mentioned oil fume concentration detection device, the mounting seat is arranged on the air duct shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic diagram of a partial structure of a kitchen appliance provided in Example 1 of the present application;

[0028] FIG2 is a schematic structural diagram of an air duct housing and an oil smoke concentration detection device provided in Example 1 of the present application;

[0029] FIG3 is a structural schematic diagram of the oil fume concentration detection device provided in Example 1 of the present application;

[0030] FIG4 is a second structural diagram of the oil smoke concentration detection device provided in Example 1 of the present application;

[0031] FIG5 is a schematic structural diagram of a detection mechanism provided in Example 1 of the present application;

[0032] FIG6 is a schematic diagram of a partial structure of a kitchen appliance provided in Example 2 of the present application;

[0033] FIG7 is a schematic structural diagram of the oil fume concentration detection device provided in Example 3 of the present application.

[0034] In the figure: 10. Main box; 20. Volute; 30. Air inlet ring; 31. First mounting hole; 40. Oil fume concentration detection device; 41. Mounting seat; 411. First mounting part; 4111. Second mounting hole; 4112. Pivot part; 412. Second mounting part; 4121. Arc-shaped connecting rod; 4122. Support plate; 4123. Positioning column; 4124. Clamping part; 4125. Lug; 42. Detection mechanism; 421. Mounting plate; 4211. Clamping hole; 4212. Vertical plate; 4213. First fixing hole; 422. Detection assembly; 43. Data cable; 44. Oil collecting pan; 441. Oil leakage hole. DETAILED DESCRIPTION

[0035] The present application is described below in conjunction with the accompanying drawings and embodiments. It is understood that the embodiments described herein are merely intended to explain the present application, rather than to limit the present application. For ease of description, the accompanying drawings only show portions, rather than all, of the structure relevant to the present application.

[0036] In the description of this application, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal communication between two components or interaction between two components. A person of ordinary skill in the art will be able to understand the meaning of the above terms in this application according to the circumstances.

[0037] In this application, 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. Moreover, 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.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0039] Example 1

[0040] The present embodiment provides a kitchen appliance having an oil fume concentration detection function. Optionally, the kitchen appliance may be a range hood. As shown in FIG1 , the kitchen appliance includes a housing, an air duct housing, and a fan. The housing includes a main box 10 and a smoke collecting hood. The smoke collecting hood is arranged at the bottom of the main box 10. A smoke collecting cavity is formed in the smoke collecting hood. A smoke inlet connected to the smoke collecting cavity is provided on the bottom surface of the smoke collecting hood, and a filter is provided at the smoke inlet. The air duct housing is arranged in the main box 10. The fan is arranged in the air duct housing. The air duct housing is provided with an air inlet, which is connected to the smoke collecting cavity. The outlet end of the air duct housing is connected to the exhaust port on the main box 10.

[0041] When the kitchen equipment is working, the oil smoke enters the smoke collecting chamber from the smoke inlet. When the oil smoke passes through the filter, some oil stains can be filtered out. The filtered air flow enters the air duct shell through the air inlet, and is then discharged through the air duct shell and the exhaust port.

[0042] In order to detect the oil fume concentration, the kitchen appliance also includes an oil fume concentration detection device 40, which is arranged on the air duct shell to detect the oil fume concentration passing through the air inlet, so that the kitchen appliance can adjust the working parameters according to the oil fume concentration to better improve the oil fume absorption effect.

[0043] To improve detection accuracy, the oil fume concentration detection device 40 needs to be installed at the edge of the air inlet. The air duct housing includes a volute 20 and an air inlet ring 30. The volute 20 is provided with an air inlet, and the air inlet ring 30 is arranged around the air inlet. Mounting holes are provided on the volute 20 or the air inlet ring 30. The mounting holes are arranged at intervals around the circumference of the air inlet. The mounting holes can be configured to install the oil fume concentration detection device 40 to reduce the number of holes in the air duct housing. Depending on the actual air inlet requirements, the size and shape of the air inlet on the air duct housing vary, resulting in different positions of the mounting holes and different spacing between adjacent mounting holes, resulting in the problem of the oil fume concentration detection device 40 not matching the air duct housing.

[0044] As shown in Figure 2, the oil fume concentration detection device 40 includes a detection mechanism 42 and a mounting base 41. The detection end of the detection mechanism 42 faces the air inlet, and the detection mechanism 42 is capable of detecting the oil fume concentration. The mounting base 41 includes a first mounting portion 411 and a second mounting portion 412. The first mounting portion 411 and the second mounting portion 412 both include a first end and a second end that are relatively set. The first end of the first mounting portion 411 is rotatably connected to the first end of the second mounting portion 412; the second end of the first mounting portion 411 is away from the second mounting portion 412, and the second end of the first mounting portion 411 is set to be connected to the air duct shell. The second end of the second mounting portion 412 is away from the first mounting portion 411, and the second end of the second mounting portion 412 can also be connected to the air duct shell, wherein the detection mechanism 42 is set on the second mounting portion 412.

[0045] When the mounting base 41 provided in this embodiment is installed on the air duct shell, the second end of one of the first mounting part 411 or the second mounting part 412 can be first fixed to the air duct shell. For example, the second end of the first mounting part 411 is first fixed to the air duct shell, and then the position of the second end of the second mounting part 412 is adjusted according to actual installation requirements. Since the first ends of the first mounting part 411 and the second mounting part 412 are rotatably connected, the angle between the first mounting part 411 and the second mounting part 412 will be adaptively adjusted following the position of the second end of the second mounting part 412, so that the mounting base 41 can meet the installation requirements of air duct shells of different shapes or sizes, and ensure that the detection end of the detection mechanism 42 can face the air inlet, thereby ensuring detection accuracy.

[0046] As shown in Figure 2, a plurality of first mounting holes 31 are provided on the air inlet ring 30, and the first mounting holes 31 are arranged at equal intervals along the circumference of the air inlet. As shown in Figure 3, the second end of the first mounting portion 411 and the second end of the second mounting portion 412 are both provided with second mounting holes 4111. Each second mounting hole 4111 is used to face a first mounting hole 31. The fasteners pass through the second mounting holes 4111 and the first mounting holes 31 in turn and are fixed to the volute 20, thereby fixing the mounting base 41, the air inlet ring 30 and the volute 20, which is beneficial to reducing the number of holes and fasteners.

[0047] In other embodiments, the first mounting hole 31 can be set on the volute 20, and the fastener can only fix the mounting seat 41 and the volute 20; or, the first mounting hole 31 can be set on the air inlet ring 30, and the fastener only fixes the mounting seat 41 and the air inlet ring 30.

[0048] As shown in Figures 3 and 4, the first mounting portion 411 is a rod-shaped structure. To match the circular air inlet ring 30, the first mounting portion 411 includes a curved connecting rod 4121, so that the curved connecting rod 4121 can better fit the edge of the air inlet ring 30. Similarly, the second mounting portion 412 can also include a curved connecting rod 4121, so that the second mounting portion 412 can better fit the edge of the air inlet ring 30, making the mounting base 41 more compact on the air duct housing.

[0049] In some embodiments, only the first mounting portion 411 or the second mounting portion 412 may be provided with the arc-shaped connecting rod 4121 .

[0050] As shown in FIG4 , the second mounting portion 412 further includes a support plate 4122, which is disposed on the top surface of the arc-shaped connecting rod 4121 in the second mounting portion 412 and extends toward the air inlet. The detection mechanism 42 is disposed on the support plate 4122. Providing the support plate 4122 increases the contact area between the second mounting portion 412 and the detection mechanism 42, thereby stably supporting the detection mechanism 42. The support plate 4122 is located on the top surface of the arc-shaped connecting rod 4121 in the second mounting portion 412 and extends toward the air inlet, so that the arc-shaped connecting rod 4121 in the second mounting portion 412 can be aligned with the outer edge of the air inlet ring 30, resulting in a flatter installation position and better fixing effect. The detection mechanism 42 located on the support plate 4122 is closer to the air inlet, thereby improving detection accuracy.

[0051] To achieve the hinged connection between the first mounting portion 411 and the second mounting portion 412, the first end of the first mounting portion 411 includes a pivoting portion 4112. The first end of the second mounting portion 412 includes two spaced-apart lugs 4125. The pivoting portion 4112 is located between the two lugs 4125 and is rotatably connected to the lugs 4125 via a pivot axis. The pivoting portion 4112 is located between the two lugs 4125, which improves the strength of the connection and ensures the overall strength of the mounting base 41, thereby better supporting and securing the detection mechanism 42.

[0052] In order to ensure that the angle between the first mounting portion 411 and the second mounting portion 412 can remain unchanged after the second end of the first mounting portion 411 and the second end of the second mounting portion 412 are fixed, so as to ensure the stability of the position of the detection mechanism 42, there can be a certain damping force between the pivot axis and the lug 4125. This damping force can ensure that the external force applied to the first mounting portion 411 and the second mounting portion 412 does not exceed a specified value to ensure a fixed connection angle.

[0053] The damping force can be achieved by reducing the fitting clearance between the pivot shaft and the lug 4125, or by adding a damping structure. The damping structure can be any structure in the technical field and will not be introduced in this embodiment.

[0054] As shown in Figure 3, the detection mechanism 42 includes a mounting plate 421, a detection assembly 422, and a data cable 43. The mounting plate 421 is mounted on the second mounting portion 412, and the detection assembly 422 is mounted on the mounting plate 421. The detection assembly 422 is configured to detect the concentration of cooking fume. One end of the data cable 43 is electrically connected to the detection assembly 422, and the other end is configured to connect to the control mechanism of the kitchen appliance to transmit detection data.

[0055] To facilitate the fastening of the mounting plate 421 to the second mounting portion 412, a locking hole 4211 is provided on the mounting plate 421, and a clamping portion 4124 is provided on the support plate 4122 of the second mounting portion 412. The clamping portion 4124 can extend into the locking hole 4211 and engage with the locking hole 4211, thereby fastening the mounting plate 421 to the support plate 4122. The fastening portion 4124 and the locking hole 4211 are engaged to achieve fastening, eliminating the need for auxiliary tools for installation and facilitating assembly and disassembly.

[0056] As shown in Figure 4, the clamping portion 4124 includes two opposing clamping arms, each with a protrusion on the side facing away from the other. When assembling the mounting plate 421 and the second mounting portion 412, the two clamping arms are pressed to reduce the distance between them, allowing the protrusion to pass through the clamping hole 4211 along with the clamping arms. After the protrusion passes through the clamping hole 4211, the clamping arms are released, returning the arms to their original position, increasing the distance between the two clamping arms. The clamping arms can then abut against the opposite sidewalls of the clamping hole 4211, and the protrusion can abut against the mounting plate 421, preventing the clamping portion 4124 from separating from the clamping hole 4211.

[0057] In this embodiment, two clamping portions 4124 are provided, one at each opposite end of the support plate 4122. A clamping hole 4211 is provided on the mounting plate 421 corresponding to each clamping portion 4124. The two clamping portions 4124 cooperate with the clamping holes 4211 to achieve securement, providing a good securement effect and preventing the mounting plate 421 from deflecting, thereby improving detection accuracy.

[0058] In some embodiments, the clamping portion 4124 may be provided on the mounting plate 421 , and correspondingly, the clamping hole 4211 may be provided on the supporting plate 4122 , which may also achieve fixation between the mounting plate 421 and the second mounting portion 412 .

[0059] In order to improve the position accuracy of the detection mechanism 42 and the support plate 4122, a positioning column 4123 is further provided on the support plate 4122, and a corresponding positioning hole is provided on the mounting plate 421. The positioning column 4123 is inserted into the positioning hole to improve the position accuracy of the detection mechanism 42 and the support plate 4122.

[0060] In this embodiment, two positioning posts 4123 are provided, and each positioning post 4123 corresponds to a positioning hole. By cooperating with the two positioning posts 4123 and the positioning holes respectively, the installation position of the mounting plate 421 can be determined on the plane where the support plate 4122 is located, thereby improving the positioning accuracy.

[0061] In other embodiments, three, four or more positioning columns 4123 may be provided to improve the positioning effect; the positioning columns 4123 may be provided on the mounting plate 421, and correspondingly, positioning holes may be provided on the support plate 4122, which may also improve the positioning effect.

[0062] As shown in FIG5 , a limiting member is further provided on the mounting plate 421 , and a socket is provided on the detection component 422 , into which the limiting member can extend to achieve positioning of the detection component 422 and the mounting plate 421 .

[0063] In this embodiment, the limiting member can be a vertical plate 4212, which is arranged approximately perpendicular to the mounting plate 421. The vertical plate 4212 can limit the detection component 422 along the thickness and width directions of the vertical plate 4212 by cooperating with the socket.

[0064] In this embodiment, there are two vertical plates 4212, and the detection assembly 422 is located between the two vertical plates 4212. The two vertical plates 4212 are arranged in parallel, and each vertical plate 4212 corresponds to a socket. The cooperation between the two vertical plates 4212 and the socket is conducive to improving the fixing effect of the detection assembly 422.

[0065] Optionally, the vertical plate 4212 can be interference fit with the socket to fix the detection component 422 on the basis of positioning, without the need for adding screws or other structural fixation, which is conducive to simplifying the structure and reducing costs.

[0066] In other embodiments, the limiting member may be a column or other structure, as long as it can cooperate with the socket to achieve positioning.

[0067] In this embodiment, the detection assembly 422 includes a housing, and a transmitter and receiver disposed therein. The transmitter is configured to emit a detection signal, and the receiver is configured to receive a reflected signal, thereby determining the oil fume concentration based on the received reflected signal. The housing is provided with a signal transmission port, with the transmitting end of the transmitter and the receiving end of the receiver both oriented toward the signal transmission port. This allows the emitted detection signal to contact the airflow at the air inlet through the signal transmission port, and the reflected signal, after being reflected by the airflow, to be received by the receiver through the signal transmission port.

[0068] In this embodiment, the transmitting unit is an infrared transmitting unit, and the receiving unit is an infrared receiving unit. The transmitting unit can emit an infrared signal, which can be reflected by the oil smoke particles in the airflow to form a reflected signal. The concentration of the oil smoke particles in the airflow is different, and the intensity of the reflected infrared signal is different, so that the intensity of the reflected signal can be corresponding to the concentration of the oil smoke particles. It should be noted here that the use of infrared rays to detect the concentration of oil smoke is a mature technology in this field. The structure and working principle of the transmitting unit and the receiving unit will not be described in this embodiment.

[0069] Example 2

[0070] This embodiment provides a kitchen appliance, which is improved on the basis of the first embodiment.

[0071] Since the mounting position of the mounting seat 41 is adjusted as the size and shape of the air duct shell change, the angle of the detection mechanism 42 will also change accordingly. In order to ensure that the detection mechanism 42 can be located at a suitable detection angle to ensure detection accuracy, in this embodiment, the installation angle of the detection mechanism 42 on the second mounting portion 412 is adjustable.

[0072] The position of the mounting plate 421 on the support plate 4122 can be adjusted, thereby changing the detection angle of the detection assembly 422 thereon. As shown in Figure 6, the mounting plate 421 includes two ends arranged opposite each other along a first direction. One end of the mounting plate 421 along the first direction can be rotatably connected to the second mounting portion 412 to form a rotation fulcrum; the other end of the mounting plate 421 along the first direction is provided with at least two first fixing holes 4213, and the support plate 4122 is provided with a second fixing hole. The fixing member can be selectively passed through one of the first fixing holes 4213 and fixedly connected to the second fixing hole on the support plate 4122. By cooperating with different first fixing holes 4213, the fixing member can rotate the mounting plate 421 around the rotation fulcrum, thereby adjusting the detection angle of the detection assembly 422. The fixing member can be a screw or a pin.

[0073] In this embodiment, five first fixing holes 4213 are provided to provide five available angles. The five first fixing holes 4213 are arranged along the second direction, which is arranged at an angle to the first direction. In other embodiments, the number of first fixing holes 4213 can be set according to actual needs and can be two, three, four, or more than five, such as six or seven.

[0074] In this embodiment, one end of the mounting plate 421 along the first direction can be fixed to the support plate 4122 of the second mounting portion 412 by a screw. By turning the screw, the threaded connection depth of the screw can be adjusted, thereby allowing the mounting plate 421 to rotate relative to the support plate 4122 with the screw as the rotation axis. This method not only realizes the rotational connection between the mounting plate 421 and the support plate 4122, but also allows the mounting plate 421 and the support plate 4122 to be fixed after adjusting to a suitable detection angle, thereby improving the fixing effect.

[0075] In other embodiments, the first fixing hole 4213 can be set on the support plate 4122, and correspondingly, the second fixing hole is set on the mounting plate 421, and the fixing piece passes through the second fixing hole and then selects to cooperate with the appropriate first fixing hole 4213.

[0076] In some embodiments, the first fixing hole 4213 and the second fixing hole can be replaced by a protrusion and a groove, respectively. For example, the mounting plate 421 is provided with a plurality of protrusions, and the support plate 4122 is provided with a groove. When adjusting the rotation angle of the mounting plate 421 and the support plate 4122, the corresponding protrusions are snapped into the grooves to achieve the fixed angle of the mounting plate 421.

[0077] The kitchen appliance provided in the present application adopts the above-mentioned oil fume concentration detection device, and the angle between the first mounting part and the second mounting part is adjustable so that the mounting seat of the oil fume concentration detection device can be compatible with air duct shells of different specifications, thereby reducing production costs.

[0078] Example 3

[0079] This embodiment provides a kitchen appliance that is improved on the basis of the first or second embodiment.

[0080] As the working time of the kitchen equipment increases, oil stains will adhere to the surface of the oil fume concentration detection device 40. When the oil stains increase, they will form oil liquid, which will drip into the pot or onto the stove under the action of gravity, affecting the user experience.

[0081] As shown in FIG7 , the oil fume concentration detection device 40 includes a detection mechanism 42, a mounting base 41, and an oil pan 44. The mounting base 41 is mounted on the air duct housing and located on one side of the air inlet. The detection mechanism 42 is disposed on the mounting base 41, with its detection end facing the air inlet, and is capable of detecting oil fume concentration. The oil pan 44 is disposed on the mounting base 41 and below the detection mechanism 42, and is configured to receive oil dripping from the detection mechanism 42. The air duct housing is also provided with an oil circuit that connects to an oil cup in the kitchen appliance. The mounting base 41 is provided with an oil leak hole 441 that connects the oil circuit and the oil pan 44. This allows oil collected by the oil pan 44 to be collected and stored in the oil cup via the oil circuit, preventing excess oil from the oil pan 44 and preventing the oil from being dumped by disassembling the kitchen appliance.

[0082] In this embodiment, one side edge of the oil pan 44 contacts the mounting seat 41, so that the oil pan 44 can also receive oil dripping from the mounting seat 41, reducing the risk of oil dripping directly into the pot or on the stove.

[0083] Optionally, the oil pan 44 may extend along the bottom edge of the mounting base 41 so as to better receive the oil dripping from the mounting base 41 and reduce the risk of the oil dripping directly into the pot or onto the stove.

[0084] In this embodiment, the vertical projection of the detection mechanism 42 is located in the oil receiving pan 44, so that the oil receiving pan 44 can receive all the oil dripping from the detection mechanism 42, and prevent the oil on the detection mechanism 42 from dripping directly into the pot or the stove.

[0085] In order to facilitate the collection of oil on the oil receiving pan 44 into the oil circuit, the oil receiving pan 44 extends downwardly in a direction close to the air inlet, and the oil leakage hole 441 can be set on the side of the mounting base 41 close to the bottom end of the oil receiving pan 44 to facilitate communication with the bottom end of the oil receiving pan 44, so that the oil in the oil receiving pan 44 can enter the oil circuit through the oil leakage hole 441 under the action of gravity.

[0086] In this embodiment, the oil leakage hole 441 is provided on the mounting seat 41 , so that the oil leakage hole 441 is directly connected to the oil circuit on the air duct shell, which is beneficial to simplifying the connection structure between the oil leakage hole 441 and the oil circuit.

[0087] In other embodiments, the oil leakage hole 441 may also be provided on the oil receiving pan 44 , and the oil leakage hole 441 may be connected to the oil path on the air duct housing through a pipeline and an oil guide plate.

Claims

1. An oil fume concentration detection device for kitchen equipment, the kitchen equipment including an air duct housing, the air duct housing being provided with an air inlet, the oil fume concentration detection device comprising: A detection mechanism (42), the detection end of the detection mechanism (42) facing the air inlet, the detection mechanism (42) being configured to detect the oil fume concentration; A mounting base (41), the mounting base (41) including a first mounting portion (411) and a second mounting portion (412) that are rotatably connected, both the first mounting portion (411) and the second mounting portion (412) being capable of being connected to the air duct housing, the detection mechanism (42) being disposed on the second mounting portion (412).

2. The oil fume concentration detection device according to claim 1, wherein, Among the first mounting portion (411) and the second mounting portion (412), one includes a pivot portion (4112), and the other includes two spaced apart lugs (4125), the pivot portion (4112) being located between the two lugs (4125) and being rotatably connected to the lugs (4125) through a pivot shaft.

3. The oil fume concentration detection device according to claim 1, wherein, At least one of the first mounting portion (411) and the second mounting portion (412) includes an arc-shaped connecting rod (4121).

4. The oil fume concentration detection device according to claim 3, wherein, The second mounting portion (412) includes an arc-shaped connecting rod (4121) and a support plate (4122), the support plate (4122) being disposed on the top surface of the arc-shaped connecting rod (4121) and extending in the direction of the air inlet, the detection mechanism (42) being disposed on the support plate (4122).

5. The oil fume concentration detection device according to claim 1, wherein, A plurality of first mounting holes (31) are circumferentially and spaced apart around the air inlet on the air duct housing, second mounting holes (4111) are provided on both the first mounting portion (411) and the second mounting portion (412), the second mounting holes (4111) being configured to cooperate with fasteners, the fasteners sequentially passing through the second mounting holes (4111) and the first mounting holes (31) and being connected to the air duct housing.

6. The oil fume concentration detection device according to any one of claims 1-5, wherein, The mounting angle of the detection mechanism (42) on the second mounting portion (412) is adjustable.

7. The oil fume concentration detection device according to claim 6, wherein, The detection mechanism (42) includes: A mounting plate (421), one end of the mounting plate (421) being rotatably connectable to the second mounting portion (412), the other end of the mounting plate (421) being provided with at least two first fixing holes (4213), and one second fixing hole being provided on the second mounting portion (412); A detection assembly (422), disposed on the mounting plate (421); A fixing member, the fixing member being capable of selectively passing through one of the first fixing holes (4213) and being connected to the second fixing hole to fix the mounting plate (421) and the second mounting portion (412).

8. The oil fume concentration detection device according to any one of claims 1-5, wherein The detection mechanism (42) includes: A mounting plate (421), disposed on the second mounting portion (412); A detection assembly (422), disposed on the mounting plate (421); A limiting member is provided on the mounting plate (421), and a jack is provided on the detection assembly (422), the limiting member being capable of extending into the jack.

9. The oil fume concentration detection device according to any one of claims 1-5, wherein, An oil passage is provided on the air duct housing, and the oil passage communicates with the oil receiving cup. The oil fume concentration detection device further includes an oil receiving tray (44). The oil receiving tray (44) is disposed on the mounting base (41) and is located below the detection mechanism (42). An oil leakage hole (441) capable of communicating the oil receiving tray (44) and the oil passage is provided on the mounting base (41) or the oil receiving tray (44).

10. A kitchen appliance, comprising: a housing provided with a smoke inlet, and a smoke collecting cavity is formed inside the housing; an air duct housing disposed inside the housing, the air duct housing is provided with an air inlet, and the air inlet communicates with the smoke collecting cavity; The oil fume concentration detection device according to any one of claims 1-9, wherein the mounting base (41) is disposed on the air duct housing.

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