An oil fume capturing device, a range hood and a control method of the range hood

Abstract

The present invention discloses an oil fume capturing device, a smoking machine and a control method for a range hood. The device includes a suspension module and a blowing module with an air passage inside. A plurality of ventilation holes for flue gas to pass through and an oil drainage channel for oil fume particles to pass through are provided on the suspension module. The oil drainage channel and the ventilation holes are respectively communicated with the air passage. The suspension module is used to suspend the oil fume particles entering the air passage in the air passage; the blowing module is used to blow the suspended oil fume particles to the oil drainage channel. The oil fume capturing device of the present invention has a simple and ingenious structure. It can not only intercept and capture oil fume particles, improve the oil fume separation effect, but also avoid excessive oil accumulation inside the range hood, which is beneficial to improving the use performance of the range hood.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to an oil fume capture device, a range hood and a control method of the range hood. Background Art

[0002] A range hood is a household appliance often used in the kitchen, which is responsible for sucking out kitchen oil fume and then discharging the oil fume into the atmosphere. With the gradual improvement of the oil fume emission standard, a large number of range hoods with electrostatic adsorption and filter net adsorption for oil fume interception have emerged on the market.

[0003] However, when the range hood is working, a lot of oil fume will adhere to the inside of the range hood. Too much oil accumulates on the impeller of the range hood fan, the inner wall and the bottom of the machine, and the oil fume interception structure, which affects the normal operation of the fan. The motor load of the range hood is too heavy, causing the range hood to heat up, the wire to short-circuit, and the engine to burn out, leading to a fire. Summary of the Invention

[0004] The present invention aims to solve at least one of the problems existing in the related art to some extent. For this purpose, the present invention provides an oil fume capture device, which has a simple and ingenious structure. It can not only intercept and capture oil fume particles, improve the oil fume separation effect, but also avoid excessive oil accumulation inside the range hood, which is beneficial to improving the use performance of the range hood.

[0005] The present invention further provides a range hood with the oil fume capture device. The present invention also provides a control method of the range hood.

[0006] According to the above-provided oil fume capture device, it is realized through the following technical solutions:

[0007] An oil fume capture device includes: a suspension module with an air passage inside. A plurality of ventilation holes for the flue gas to pass through and an oil drainage channel for the oil fume particles to pass through are provided on the suspension module. The oil drainage channel and the ventilation holes are respectively communicated with the air passage. The suspension module is used to suspend the oil fume particles entering the air passage in the air passage; a blowing module, which is used to blow the suspended oil fume particles into the oil drainage channel.

[0008] In some embodiments, the suspension module includes two oil drainage pipes and a plurality of ultrasonic components. All the ultrasonic components are circumferentially arranged in an array and jointly enclose the air passage. The ventilation holes are formed between adjacent ultrasonic components. Each ultrasonic component is used to emit sound waves towards the air passage; the two oil drainage pipes are respectively arranged at opposite ends of the ultrasonic components. Each oil drainage pipe has an oil drainage channel communicating with the air passage; the blowing module is installed in the air passage and is used to blow the suspended oil fume particles into the two oil drainage channels.

[0009] In some embodiments, the suspension module includes a row of oil pipes and a plurality of ultrasonic components. All the ultrasonic components are arranged in a circumferential array and jointly enclose to form the air duct. An air vent is formed between adjacent ultrasonic components. Each ultrasonic component is configured to emit sound waves towards the air duct. The row of oil pipes is disposed at one end of the ultrasonic components, and the row of oil pipes has an oil drainage channel communicating with the air duct. The air supply module is installed inside the air duct, or the air supply module is installed outside the ultrasonic components, and an air outlet of the air supply module communicates with one end of the air duct away from the row of oil pipes.

[0010] In some embodiments, each ultrasonic component includes a fixing member and an ultrasonic emitter, and the ultrasonic emitter is connected to the row of oil pipes through the fixing member.

[0011] In some embodiments, each ultrasonic component further includes a fixing plate, the fixing plate is disposed on a side of the ultrasonic emitter facing away from the air duct, and the fixing plate is respectively connected to the ultrasonic emitter and the fixing member.

[0012] In some embodiments, the ultrasonic emitter includes at least two emitting units, all the emitting units are uniformly spaced along the length direction of the fixing plate, and each emitting unit is connected to the fixing plate.

[0013] In some embodiments, the ultrasonic emitter includes at least two emitting units, all the emitting units are uniformly spaced along the length direction of the air duct, and adjacent emitting units are connected to each other through a connecting member.

[0014] In some embodiments, there are further two mounting seats, the two mounting seats are respectively disposed on opposite outer sides of the ultrasonic components, and mounting holes are provided at positions of each fixing seat corresponding to the row of oil pipes, and the row of oil pipes passes through the mounting holes.

[0015] According to the above-provided range hood, it is achieved through the following technical solutions:

[0016] An oil fume extractor, comprising: a smoke collecting hood, the bottom of the smoke collecting hood being provided with an air inlet for oil fumes to pass through; a wind cabinet assembly, the wind cabinet assembly including a wind box and a volute fan, the wind box being disposed on the top of the smoke collecting hood, and the volute fan being installed in the wind box; the oil fume capturing device as described above, a plurality of the oil fume capturing devices being provided in the smoke collecting hood above the air inlet, all the oil fume capturing devices being arranged side by side at intervals, and the outlet of the oil drainage channel communicating with the interior of the smoke collecting hood; an oil fume detection module, the oil fume detection module being installed on the smoke collecting hood for oil fume parameters; a control module, the control module being electrically connected to the oil fume detection module, the suspension module and the air supply module respectively.

[0017] In some embodiments, it further includes an oil mesh assembly, the oil mesh assembly being installed at the air inlet and below the oil fume capturing device, and the oil fume detection module being installed at any position on the smoke inlet surface of the smoke collecting hood, the smoke inlet surface of the oil mesh assembly or the back smoke surface of the oil mesh assembly.

[0018] According to the control method of an oil fume extractor provided above, it is realized by the following technical solutions:

[0019] A control method for an oil fume extractor as described above, the control method comprising the following steps:

[0020] S1, the oil fume extractor is started;

[0021] S2, the volute fan is turned on, and before, at the same time or after turning on the volute fan, the oil fume parameters are obtained, wherein the oil fume parameters at least include the oil fume concentration;

[0022] S3, it is judged whether the oil fume parameters are greater than the start threshold. If so, proceed to the next step; if not, continue to execute this step until the oil fume extractor is turned off;

[0023] S4, the air supply module and the ultrasonic component of the oil fume capturing device are turned on.

[0024] In some embodiments, the control method further includes the following step S5: obtain and judge whether the oil fume parameters are within the range of (start threshold, adjustment threshold). If the oil fume parameters are less than or equal to the start threshold, turn off the air supply module and the ultrasonic component; if the oil fume parameters ∈ (start threshold, adjustment threshold), control the air supply module and the ultrasonic component to operate according to the current state; if the oil fume parameters are greater than or equal to the adjustment threshold, at least increase the working parameters of the ultrasonic component.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] The present invention is characterized by a simple and ingenious structure, which sets an air duct, air vents communicating with the air duct, and an oil drainage channel communicating with the air duct on the suspension module, and installs the air supply module in the air duct. When the suspension module works, the oil fume particles entering the air duct can be suspended in the air duct, and when the air supply module works, the suspended oil fume particles can be blown into the oil drainage channel, realizing the interception and capture of oil fume particles, thereby improving the oil fume separation effect, avoiding excessive oil accumulation inside the range hood, and facilitating the improvement of the performance of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. 6 is a schematic structural diagram of the oil fume capture device in Embodiment 1 of the present invention;

[0028] Figure 2 FIG. 7 is a sectional view of the oil fume capture device in Embodiment 1 of the present invention;

[0029] Figure 3 FIG. 8 is a sectional view of the oil fume capture device in Embodiment 1 of the present invention from another angle;

[0030] Figure 4 FIG. 9 is a sectional view of the second oil fume capture device in Embodiment 1 of the present invention;

[0031] Figure 5 FIG. 10 is a sectional view of the third oil fume capture device in Embodiment 1 of the present invention, with the air supply module hidden;

[0032] Figure 6 FIG. 11 is a partial structural schematic diagram of the fourth oil fume capture device in Embodiment 1 of the present invention;

[0033] Figure 7 FIG. 12 is a schematic structural diagram of the range hood in Embodiment 2 of the present invention;

[0034] Figure 8 FIG. 13 is a sectional view of the range hood in Embodiment 2 of the present invention, with the volute fan hidden;

[0035] Figure 9 FIG. 14 is a flowchart of the control method of the range hood in Embodiment 3 of the present invention.

[0036] In the figures: 1 - suspension module, 101 - air duct, 102 - air vent, 103 - oil drainage channel, 104 - air inlet channel, 11 - oil discharge pipe, 12 - fixing member, 13 - ultrasonic transmitter, 131 - transmitting unit, 14 - fixing plate, 15 - connecting member;

[0037] 2 - air supply module;

[0038] 3 - mounting seat, 301 - connecting shaft;

[0039] 4 - smoke collecting hood, 401 - air inlet;

[0040] 5 - Oil fume detection module;

[0041] 6 - Oil mesh assembly. Specific implementation manner

[0042] The following embodiments are used to illustrate the present invention, but the present invention is not limited by these embodiments. Modifying the specific implementation manner of the present invention or making equivalent replacements for some technical features without departing from the spirit of the present invention scheme shall be covered within the scope of the technical solution claimed by the present invention.

[0043] Embodiment 1

[0044] Reference Figures 1-3 , this embodiment provides an oil fume capture device, which is applied to a range hood and is used to intercept and collect oil fume particles to improve the oil fume separation effect, thereby avoiding excessive oil accumulation inside the range hood and further improving the service performance of the range hood. The oil fume capture device includes a suspension module 1 and a air supply module 2. Among them, the interior of the suspension module 1 has a horizontally arranged air duct 101. A plurality of air vents 102 for the passage of flue gas are circumferentially spaced on the side wall of the suspension module 1. Each air vent 102 communicates with both the air duct 101 and the outside of the suspension module 1. Oil discharge channels 103 for the passage of oil fume particles are respectively provided at the left and right ends of the suspension module 1. One end of the oil discharge channel 103 communicates with the air duct 101, and the other end is used to communicate with the inside of the smoke collecting hood or the oil cup of the range hood to realize the collection of the collected oil fume particles into the oil cup of the range hood. In this embodiment, the suspension module 1 is used to suspend the oil fume particles entering the air duct 101 in the air duct 101. The air supply module 2 is installed in the air duct 101 and is used to blow the suspended oil fume particles to the two oil discharge channels 103.

[0045] When it is necessary to intercept and capture oil fume, control the suspension module 1 and the air supply module 2 to start working. The flue gas or oil fume flows upward and enters the air duct 101 through the lower air vents 102. Under the action of the suspension module 1, the oil fume particles in the oil fume are suspended in the air duct 101, realizing the interception and capture of the oil fume particles, thereby improving the oil fume separation effect, avoiding excessive oil accumulation inside the range hood, and being beneficial to improving the service performance of the range hood. After capturing the oil fume particles, the air supply module 2 blows the suspended oil fume particles into the oil discharge channels 103, so that the oil fume particles flow into the oil cup of the range hood through the oil discharge channels 103.

[0046] It can be seen that the oil fume capture device of this embodiment has a simple and ingenious structure by arranging an airway 101, an air vent 102 connected to the airway 101, and an oil discharge channel 103 connected to the airway 101 on the suspension module 1, and the air supply module 2 is installed in the airway 101. When the suspension module 1 is working, the oil fume particles entering the airway 101 can be suspended in the airway 101, and when the air supply module 2 is working, the suspended oil fume particles can be blown to the oil discharge channel 103 to intercept and capture the oil fume particles, thereby improving the oil fume separation effect, avoiding excessive oil accumulation inside the range hood, and improving the performance of the range hood. In addition, by installing the air supply module 2 in the airway 101, the air supply module 2 and the suspension module 1 are integrated into one, so that the overall volume of the device is smaller, and the space occupied by the device is further reduced.

[0047] In this embodiment, the suspension module 1 includes two oil drain pipes 11 and a plurality of ultrasonic components (not shown in the figure), and all ultrasonic components are arranged in a circular array to form an ultrasonic phased array. All ultrasonic waves together enclose an airway 101, and vents 102 are formed between adjacent ultrasonic components. Each ultrasonic component is used to emit sound waves toward the airway 101. Therefore, when all ultrasonic components simultaneously generate sound waves of a certain frequency, the sound waves of the ultrasonic waves have a nonlinear effect, which can produce a pressure difference on objects in the sound field (i.e., in the airway 101), suspending light and small oil smoke particles in the oil smoke near the nodes of the standing wave of the sound wave. Through the ultrasonic phased array, the three-dimensional movement of the object can be controlled.

[0048] Two oil drain pipes 11 are respectively arranged at opposite ends of the ultrasonic assembly, and each oil drain pipe 11 has an oil drain passage 103 connected to the air passage 101. The air supply module 2 is preferably a centrifugal fan, which is installed in the middle of the air passage 101 and is used to blow the suspended oil fume particles to the two oil drain passages 103. Therefore, through the two oil drain pipes 11, the discharge speed of the oil fume particles is increased.

[0049] refer to Figures 2-3 In this embodiment, each ultrasonic assembly includes a fixing member 12, an ultrasonic transmitter 13 and a fixing plate 14. The fixing plate 14 is disposed on the side of the ultrasonic transmitter 13 away from the airway 101, and the radial inner side of the fixing plate 14 is connected to the ultrasonic transmitter 13. The opposite ends of the fixing plate 14 are respectively connected to two fixing members 12, and one end of each fixing member 12 away from the fixing plate 14 is connected to the corresponding oil drain pipe 11. Thus, the ultrasonic transmitter 13 is stably and reliably connected between the two oil drain pipes 11 through the connected fixing member 12 and the fixing plate 14, ensuring that the ultrasonic transmitter 13 is firmly and reliably installed.

[0050] refer to Figures 2-3, Further, it further includes two mounting seats 3, and the two mounting seats 3 are respectively arranged on the opposite outer sides in the length direction of the ultrasonic component, that is, the two mounting seats 3 are respectively arranged on the left and right outer sides of the ultrasonic component. At the position corresponding to each fixed seat of the drain pipe 11, there is a mounting hole (not shown in the figure), and the drain pipe 11 passes through the mounting hole. Thus, through the mounting seat 3, it is not only convenient to strengthen the mounting stability of the drain pipe 11, but also convenient to install the oil fume capturing device on the range hood.

[0051] In other embodiments, the oil fume capturing device can be designed to have only one oil drainage channel 103. Correspondingly, the air supply module 2 can be installed in the air duct 101 or outside the suspension module 1.

[0052] Reference Figure 4 , when the oil fume capturing device has only one oil drainage channel 103 and the air supply module 2 is installed in the air duct 101, the oil fume capturing device includes one drain pipe 11 and multiple ultrasonic components. All the ultrasonic components are circumferentially arrayed and jointly enclose to form the air duct 101. There are ventilation holes 102 formed between adjacent ultrasonic components, and each ultrasonic component is used to emit sound waves towards the air duct 101. The drain pipe 11 is arranged on the left side of the ultrasonic component, and the drain pipe 11 has an oil drainage channel 103 communicating with the air duct 101. The drain pipe 11 passes through the mounting hole of the left mounting seat 3. The air supply module 2 is installed in the air duct 101 and close to the right side of the air duct 101. The air outlet direction of the air supply module 2 faces the drain pipe 11 on the left side to blow the suspended particles into the oil drainage channel 103 on the left side. There is a connecting shaft 301 on the right mounting seat 3, and the connecting shaft 301 extends into the air duct 101 and connects the air supply module 2. Thus, through the connecting shaft 301 of the right mounting seat 3, it is convenient to install and fix the air supply module 2.

[0053] Reference Figure 4 , when the oil fume capturing device has only one oil drainage channel 103 and the air supply module 2 is installed outside the suspension module 1, there is an air inlet channel 104 communicating with the air duct 101 on the right side of the suspension module 1. The air supply module 2 is installed outside the suspension module 1, and the air outlet of the air supply module 2 communicates with the air inlet channel 104. At this time, the volume size of the air supply module 2 is no longer limited by the diameter size of the air duct 101, and a larger volume and stronger wind force fan can be configured.

[0054] In other embodiments, the fixing plate 14 can also be omitted. Reference Figure 6 , when the fixing plate 14 is omitted, the ultrasonic transmitter 13 includes at least two transmitting units 131, and all the transmitting units 131 are evenly spaced along the length direction of the air duct 101, and adjacent transmitting units 131 are connected by a connecting piece 15.

[0055] Embodiment 2

[0056] Reference Figures 7-8 In this embodiment, an oil fume suction machine is provided, which includes a smoke collecting hood 4, a wind cabinet assembly (not shown in the figure), a control module (not shown in the figure), and an oil fume capturing device as described in Embodiment 1. An air inlet 401 for oil fume to pass through is provided at the bottom of the smoke collecting hood 4. The wind cabinet assembly includes a wind box and a volute fan. The wind box is arranged on the top of the smoke collecting hood 4, and the volute fan is installed in the wind box. A plurality of oil fume capturing devices are arranged in the smoke collecting hood 4 above the air inlet 401. All the oil fume capturing devices are arranged side by side at intervals in the front-back or left-right direction. The opposite ends of each oil fume capturing device are fixedly connected to the edge of the air inlet 401 through a mounting seat 3, and the outlet of the oil drainage channel 103 of each oil fume capturing device communicates with the inside of the smoke collecting hood 4. The control module is electrically connected to the suspension module 1 and the air supply module 2 respectively.

[0057] When the oil fume suction machine needs to start the oil fume capturing device, the control module controls the ultrasonic components of the suspension module 1 to emit sound waves simultaneously, and controls the air supply module 2 to start working. When the flue gas or oil fume is inhaled into the inside of the smoke collecting hood 4 through the air inlet 401, it continues to flow upward and enters the air duct 101 through the lower vent holes 102. Through the ultrasonic phased array, the oil fume particles in the oil fume are intercepted and captured, so that the oil fume particles in the oil fume are suspended in the air duct 101. The air supply module 2 blows the suspended oil fume particles into the oil drainage channel 103, so that the oil fume particles flow into the inside of the smoke collecting hood 4 through the oil drainage channel 103. The separated oil fume flows upward through the upper vent holes 102 and enters the volute fan inside the oil fume suction machine, and finally is discharged to the outside by the smoke machine.

[0058] It can be seen that during the whole process of smoking and exhausting oil fume, when the oil fume passes through the oil fume capturing device, the oil fume particles in the oil fume will be intercepted and captured. The captured oil fume particles are blown into the oil drainage channel 103 by the air supply module 2, and finally flow into the oil cup of the smoke machine through the smoke collecting hood 4, improving the oil fume separation effect, avoiding excessive oil accumulation on components such as the volute fan and the wall of the smoke machine inside the oil fume suction machine, and enhancing the service performance of the oil fume suction machine.

[0059] Furthermore, an oil fume detection module 5 is further included. The oil fume detection module 5 is installed on the smoke collecting hood 4 and is electrically connected to the control module for oil fume parameters, where the oil fume parameters at least include the oil fume concentration. Thus, the oil fume detection module 5 can be linked with the oil fume capturing device. The control module can control the switch of the oil fume capturing device and adjust the sound wave frequency of the oil fume capturing device according to the oil fume concentration detected by the oil fume detection module 5, so as to dynamically adjust the interception and capture effect of the oil fume particles, make the oil fume separation effect better, and improve the self-adaptability of the smoke machine product.

[0060] Further, it further includes an oil mesh assembly 6. The oil mesh assembly 6 is installed at the air inlet 401 and located below the oil fume capture device. In this way, through the oil mesh assembly 6, the oil fume is preliminarily filtered, and then whether the oil fume capture device performs secondary filtration on the oil fume is controlled according to the size of the oil fume concentration.

[0061] In this embodiment, the oil fume detection module 5 is installed on one side of the oil mesh assembly 6 facing the oil fume capture device, that is, the oil fume detection module 5 is installed on the back side of the oil mesh assembly 6 facing the fume, so that the oil fume concentration detected by the oil fume detection module 5 is the oil fume concentration value after preliminary filtration, and then it is convenient for the control module to determine whether to control the start of the oil fume capture device according to the filtered oil fume concentration value.

[0062] When the filtered oil fume concentration value is small, the oil fume capture device is not started. When the filtered oil fume concentration value is greater than the start threshold, the oil fume capture device is started. When the filtered oil fume concentration value > adjustment threshold > start threshold, the working parameters of the oil fume capture device are adaptively improved to enhance the oil fume interception and capture effect and ensure the optimal oil fume separation effect of the range hood.

[0063] In other embodiments, the oil fume detection module 5 can be installed on the smoke inlet surface of the oil mesh assembly 6, that is, the oil fume detection module 5 is installed on the side of the oil mesh assembly 6 facing away from the inside of the smoke collecting hood 4. Of course, it can also be installed on the smoke inlet surface of the smoke collecting hood 4.

[0064] Embodiment 3

[0065] Reference Figure 9 , this embodiment provides a control method for a range hood, which is applied to a range hood as described in Embodiment 2. The control method includes the following steps:

[0066] S1, the range hood is started;

[0067] S2, the volute fan is turned on. Before, at the same time as, or after turning on the volute fan, the oil fume parameters are obtained, where the oil fume parameters at least include the oil fume concentration;

[0068] Specifically, the volute fan and the oil fume detection module 5 can be synchronized or asynchronous. In this embodiment, an example is given where the volute fan is first turned on to suck the oil fume, and then the oil fume detection module 5 is turned on to start obtaining the oil fume parameters.

[0069] S3, it is determined whether the oil fume parameters are greater than the start threshold. If so, proceed to the next step; if not, continue to execute this step until the range hood is turned off;

[0070] S4, the air supply module 2 and the ultrasonic component of the oil fume capture device are turned on.

[0071] Specifically, when the control module of the range hood determines that the oil fume parameter is greater than the start threshold, it can first control all ultrasonic components to work and emit sound waves to intercept and capture the oil fume particles in the oil fume, making them suspended in the air duct 101. Then, it controls all the air supply modules 2 to open to blow the suspended oil fume particles to the oil drainage channel 103, and through the oil drainage channel 103, they flow into the inside of the smoke collecting hood 4, and then flow into the oil cup of the range hood from the oil leakage hole at the bottom of the smoke collecting hood 4. During this process, by intercepting and capturing the oil fume particles in the oil fume and discharging the captured oil fume particles into the oil cup, the oil fume separation effect is improved, and the accumulation of oil on components such as the volute fan and the wall of the range hood inside the range hood is avoided, thereby improving the service performance of the range hood.

[0072] Certainly, when the control module of the range hood determines that the oil fume parameter is greater than the start threshold, it can also control all the air supply modules 2 and all the ultrasonic components to open simultaneously.

[0073] In addition, it can also be designed to only control the air supply modules 2 and ultrasonic components of some oil fume capture devices to open. All the oil fume capture devices are sorted in the front-back direction, and the oil fume capture devices sorted as odd numbers can be controlled to work, while the oil fume capture devices sorted as even numbers do not work; conversely, it is the same.

[0074] Reference Figure 9 Furthermore, the control method further includes the following step S5: obtain and judge whether the oil fume parameter is within the range of (start threshold, adjustment threshold). If the oil fume parameter is less than or equal to the start threshold, the air supply module 2 and the ultrasonic components are closed. At this time, it indicates that the oil fume concentration generated by cooking is low, and there is no need to rely on the oil fume capture device to improve the oil fume interception effect. By closing the air supply module 2 and the ultrasonic components, the purpose of reducing energy consumption is achieved.

[0075] If the oil fume parameter ∈ (start threshold, adjustment threshold), control the air supply module 2 and the ultrasonic components to operate according to the current state. At this time, if all the air supply modules 2 and the ultrasonic components are working, or the odd / even air supply modules 2 and the ultrasonic components are working, they will all operate according to the current state.

[0076] If the oil fume parameter is greater than or equal to the adjustment threshold, at least increase the operating parameter of the ultrasonic component, where the operating parameter can be power or current. Assume that the adjustment threshold is C0 and the power at which the ultrasonic component starts to operate is W0. When the oil fume parameter increases by △C each time, increase the power of the ultrasonic component by 20%, that is, the new power of the ultrasonic component is 1.2W0; when the oil fume parameter is greater than the adjustment threshold, if the oil fume parameter decreases by a certain amount, the power of the ultrasonic component is correspondingly reduced. Thus, according to different oil fume parameters, by dynamically adjusting the ultrasonic phased array of the oil fume capture device, the oil droplets entering it can be ultrasonically levitated, so as to ensure better capture effect of oil fume particles and improve the adaptability of the range hood.

[0077] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An oil fume capturing device, characterized in that, Comprising: A suspension module (1) having an air passage (101) inside. A plurality of ventilation holes (102) for flue gas to pass through and an oil drainage channel (103) for oil fume particles to pass through are provided on the suspension module (1). The oil drainage channel (103) and the ventilation holes (102) are respectively communicated with the air passage (101). The suspension module (1) is used to suspend the oil fume particles entering the air passage (101) in the air passage (101); A air supply module (2), which is used to blow the suspended oil fume particles to the oil drainage channel (103); Wherein, the suspension module (1) includes two oil drainage pipes (11) and a plurality of ultrasonic components. All the ultrasonic components are circumferentially arrayed and jointly enclose to form the air passage (101). The ventilation holes (102) are formed between adjacent ultrasonic components. Each ultrasonic component is used to emit sound waves towards the air passage (101); The two oil drainage pipes (11) are respectively arranged at opposite ends of the ultrasonic components. Each oil drainage pipe (11) has an oil drainage channel (103). One end of the oil drainage channel (103) is communicated with the air passage (101), and the other end is used to communicate with the inside of the smoke collecting hood or the oil cup of the range hood; The air supply module (2) is installed in the air passage (101) and is used to blow the suspended oil fume particles to the two oil drainage channels (103).

2. An oil fume capturing device, characterized in that, Comprising: A suspension module (1) having an air passage (101) inside. A plurality of ventilation holes (102) for flue gas to pass through and an oil drainage channel (103) for oil fume particles to pass through are provided on the suspension module (1). The oil drainage channel (103) and the ventilation holes (102) are respectively communicated with the air passage (101). The suspension module (1) is used to suspend the oil fume particles entering the air passage (101) in the air passage (101); A air supply module (2), which is used to blow the suspended oil fume particles to the oil drainage channel (103); Wherein, the suspension module (1) includes an oil drainage pipe (11) and a plurality of ultrasonic components. All the ultrasonic components are circumferentially arrayed and jointly enclose to form the air passage (101). The ventilation holes (102) are formed between adjacent ultrasonic components. Each ultrasonic component is used to emit sound waves towards the air passage (101); The oil drainage pipe (11) is arranged at one end of the ultrasonic components, and the oil drainage pipe (11) has an oil drainage channel (103). One end of the oil drainage channel (103) is communicated with the air passage (101), and the other end is used to communicate with the inside of the smoke collecting hood or the oil cup of the range hood; The air supply module (2) is installed in the air passage (101), or the air supply module (2) is installed outside the ultrasonic components, and the air outlet of the air supply module (2) is communicated with one end of the air passage (101) away from the oil drainage pipe (11).

3. The oil fume capturing device according to claim 1 or 2, characterized in that, Each of the ultrasonic components includes a fixing member (12) and an ultrasonic transmitter (13), and the ultrasonic transmitter (13) is connected to the oil drain pipe (11) through the fixing member (12).

4. The oil fume capturing device according to claim 3, characterized in that, Each of the ultrasonic components further includes a fixing plate (14), the fixing plate (14) is disposed on a side of the ultrasonic transmitter (13) away from the air duct (101), and the fixing plate (14) is respectively connected to the ultrasonic transmitter (13) and the fixing member (12).

5. The oil fume capturing device according to claim 4, characterized in that, The ultrasonic transmitter (13) includes at least two transmitting units (131), and all the transmitting units (131) are uniformly spaced along the length direction of the fixing plate (14), and each transmitting unit (131) is connected to the fixing plate (14).

6. The oil fume capturing device according to claim 3, characterized in that, The ultrasonic transmitter (13) includes at least two transmitting units (131), and all the transmitting units (131) are uniformly spaced along the length direction of the air duct (101), and adjacent transmitting units (131) are connected by a connecting member (15).

7. The oil fume capturing device according to claim 1, characterized in that, It further includes two mounting seats (3), the two mounting seats (3) are respectively disposed on opposite outer sides of the ultrasonic component, and each mounting seat is provided with a mounting hole at a position corresponding to the oil drain pipe (11), and the oil drain pipe (11) passes through the mounting hole.

8. An oil fume extractor, characterized in that, Includes: A smoke collecting hood (4), the bottom of the smoke collecting hood (4) is provided with an air inlet (401) for oil fume to pass through; An air cabinet assembly, the air cabinet assembly includes an air box and a volute fan, the air box is disposed on the top of the smoke collecting hood (4), and the volute fan is installed in the air box; The oil fume capturing device according to any one of claims 1-7, wherein a plurality of the oil fume capturing devices are provided in the smoke collecting hood (4) above the air inlet (401), and all the oil fume capturing devices are arranged side by side at intervals, and the outlet of the oil drainage channel (103) communicates with the inside of the smoke collecting hood (4); An oil fume detection module (5), the oil fume detection module (5) is installed on the smoke collecting hood (4) for obtaining oil fume parameters; A control module, the control module is electrically connected to the oil fume detection module (5), the suspension module (1) and the air supply module (2) respectively.

9. The oil fume extractor according to claim 8, characterized in that, It further includes an oil mesh assembly (6), the oil mesh assembly (6) is installed at the air inlet (401) and is located below the oil fume capturing device, and the oil fume detection module (5) is installed at any position on the smoke inlet surface of the smoke collecting hood (4), the smoke inlet surface of the oil mesh assembly (6) or the back smoke surface of the oil mesh assembly (6).

10. A control method for an oil fume extractor applying the oil fume extractor according to claim 8 or 9, characterized in that, The control method includes the following steps: S1, the range hood is started; S2, the volute fan is turned on, and before, at the same time or after turning on the volute fan, the oil fume parameters are obtained, wherein the oil fume parameters at least include the oil fume concentration; S3, determining whether the oil fume parameters are greater than the start threshold, if so, proceeding to the next step, if not, continuing to execute this step until the range hood is turned off; S4, turning on the air supply module (2) and the ultrasonic component of the oil fume capturing device.

11. The control method according to claim 10, characterized in that, The controlled method further includes the following step S5 of obtaining and determining whether the oil fume parameter is within the range of (start threshold, adjustment threshold). If the oil fume parameter is less than or equal to the start threshold, the air supply module (2) and the ultrasonic component are turned off. If the oil fume parameter ∈ (start threshold, adjustment threshold), the air supply module (2) and the ultrasonic component are controlled to operate in the current state. If the oil fume parameter is greater than or equal to the adjustment threshold, at least the operating parameters of the ultrasonic component are increased.

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