Oil net device of range hood and range hood

Abstract

The present application relates to an oil screen device for a range hood and the range hood. The oil screen device includes an oil screen, an ionization screen, an ionization generator, and an ultrasonic device. The oil screen and the ionization screen are arranged at the smoke inlet of the range hood. The ionization generator is connected to the ionization screen, and the ultrasonic device is connected to the ionization screen. The ionization generator is used to supply power to the ionization screen to form an electric field to absorb oil stains, and the ultrasonic device is used to vibrate and clean the ionization screen to remove the absorbed oil stains. The ionization screen is used to ionize the oil stains in the oil smoke, thereby adsorbing the oil stains on the ionization screen. The ultrasonic device is then used to vibrate and clean the ionization screen in combination with the ultrasonic device to remove the absorbed oil stains, thereby keeping the interior of the range hood clean and reducing the internal load of the range hood volute. This can effectively improve the oil absorption effect of the range hood and reduce the difficulty of cleaning.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent devices, and in particular to an oil screen device for a range hood and a range hood. Background Art

[0002] With the development of science and technology and the continuous progress of society, people's living standards have gradually improved, and range hoods have gradually entered the kitchens of thousands of households. However, while range hoods provide people with functions, they also bring cleaning problems.

[0003] Traditional range hoods filter out oil stains from oil fumes by installing an oil net with holes, but the oil fume separation effect of this oil net is relatively poor. Most oil fume molecules will still enter the range hood through the oil net, increasing the internal load of the volute, affecting the overall oil absorption effect of the range hood, and gradually increasing the difficulty of cleaning. Summary of the Invention

[0004] Based on this, it is necessary to provide an oil net device and a range hood for a range hood to address the problem that traditional range hoods are difficult to clean, which can effectively improve the overall oil suction effect of the range hood and reduce the difficulty of cleaning.

[0005] An oil screen device for a range hood, comprising an oil screen, an ionizing screen, an ionizing generator, and an ultrasonic device, wherein the oil screen and the ionizing screen are arranged at the smoke inlet of the range hood, the ionizing generator is connected to the ionizing screen, and the ultrasonic device is connected to the ionizing screen;

[0006] The ionization generating device is used to supply power to the ionization network to form an electric field to absorb oil stains, and the ultrasonic device is used to vibrate and clean the ionization network to remove the adsorbed oil stains.

[0007] In one embodiment, the oil net includes a front oil net and a rear oil net arranged in sequence along the inhalation direction of the range hood, the front oil net and the rear oil net are both located at the inhalation port of the range hood, and the ionization net is located between the front oil net and the rear oil net.

[0008] In one embodiment, the number of layers of the ionization network is two or more, and each layer of the ionization network is connected to the ionization generating device and the ultrasonic device.

[0009] In one embodiment, the oil net device further includes an insulating layer disposed between the ionization generating device and the ultrasonic device.

[0010] In one embodiment, the oil net device further includes a controller connected to the ionization generating device and the ultrasonic device, and the controller is used to control the ionization generating device to supply power to the ionization net, and to control the vibration frequency and / or amplitude of the ultrasonic device.

[0011] In one embodiment, the ultrasonic device includes an ultrasonic generator and a transducer vibration system provided on the range hood, and the transducer vibration system is connected to the ultrasonic generator and the ionization network.

[0012] A range hood comprises a range hood housing and the above-mentioned oil net device, wherein the oil net device is arranged on the range hood housing.

[0013] In one embodiment, the range hood further includes a wind wheel, a motor and a volute, the volute is arranged on the range hood housing, the wind wheel is arranged on the volute, and the motor is connected to the wind wheel.

[0014] In one embodiment, the range hood further includes an operation panel, the oil net device includes a controller connected to the ionization generating device and the ultrasonic device, and the controller is connected to the operation panel and the motor.

[0015] In one embodiment, the range hood further includes an oil cup disposed on the range hood housing.

[0016] The oil net device and range hood of the above-mentioned range hood use an ionization net to ionize the oil in the oil smoke, thereby adsorbing the oil on the ionization net, and then use an ultrasonic device to vibrate and clean the ionization net to remove the adsorbed oil, thereby keeping the interior of the range hood clean and reducing the internal load of the range hood volute, which can effectively improve the oil absorption effect of the range hood and reduce the difficulty of cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of an oil screen device of a range hood in one embodiment;

[0018] Figure 2 This is a schematic structural diagram of an oil screen in one embodiment;

[0019] Figure 3 FIG2 is a structural diagram of an oil screen device of a range hood in another embodiment.

[0020] Explanation of reference numerals: 110 - oil net, 120 - ionization net, 130 - ionization generating device and ultrasonic device, 140 - insulation layer. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0023] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediate element. In the following embodiments, "connection" should be understood as "electrical connection", "communication connection", etc., if the connected circuits, modules, units, etc. can transmit electrical signals or data to each other.

[0024] As used herein, the singular forms "a," "an," and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include," "comprising," "having," and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Furthermore, the terms used in this specification include any and all combinations of the relevant listed items.

[0025] In one embodiment, Figure 1 As shown, an oil screen device for a range hood is provided, comprising an oil screen 110, an ionizing screen 120, an ionizing generator, and an ultrasonic device. The oil screen 110 and the ionizing screen 120 are disposed at the smoke inlet of the range hood. The ionizing generator is connected to the ionizing screen 120, and the ultrasonic device is connected to the ionizing screen 120. The ionizing generator is used to supply power to the ionizing screen 120 to form an electric field to absorb oil stains, and the ultrasonic device is used to vibrate and clean the ionizing screen 120 to remove the absorbed oil stains.

[0026] The ionization generator and the ultrasonic device can be installed at different positions of the range hood respectively, or they can be integrated and installed on the range hood housing. The oil screen 110 is installed at the smoke inlet position of the range hood housing. The range hood uses a motor to drive the impeller to rotate to generate centrifugal force, so that a negative pressure area is generated inside the volute. Due to the pressure difference, the oil smoke outside the range hood housing enters the housing through the oil screen 110, and is then discharged to the public flue through the volute, impeller, and check valve. The ionization net 120 can be installed on the inner side of the oil screen 110. The cathode and anode of the ionization net 120 are connected to the ionization generator. When energized, an electric field is generated to ionize the oil particles and dust in the oil smoke after passing through the oil screen 110, so that the oil particles and dust are retained on the ionization net 120, thereby preventing the oil particles and dust from entering the interior of the range hood, thereby keeping the interior of the range hood clean. The ionization net 120 is driven to vibrate by an ultrasonic device, so that the grease attached to the ionization net 120 is broken and falls off, thereby completing the cleaning of the ionization net 120 .

[0027] Specifically, the user can send a start command to the controller through the operation panel of the range hood. After receiving the start command, the controller controls the motor to start and the range hood starts to work. At the same time, the controller also controls the ionization generator to supply power to the ionization network 120 to generate an electric field, which can absorb the oil fume particles and dust in the oil fume, thereby achieving the effect of purifying the oil fume. The cleaned smoke enters the volute and is finally discharged into the public flue. The oil fume particles adsorbed on the ionization network 120 condense on the ionization network 120 after a period of condensation. After the user finishes cooking, the user sends a shutdown command to the controller through the operation panel of the range hood. The controller stops supplying power to the motor and controls the ionization generator to stop supplying power to the ionization network 120. It also starts the ultrasonic device to drive the ionization network 120 to vibrate at high speed, thereby quickly loosening the dirt attached to various parts of the ionization network 120.

[0028] It is understood that in other embodiments, the controller may record the operating time of the ionization network 120. After the ionization network 120 has operated for a predetermined time, when the ionization generator stops supplying power to the ionization network 120, the controller may control the ultrasonic device to clean the ionization network 120, reset the recorded operating time, and prepare for the next operating time record. Alternatively, the user may send a separate command to the controller via the operation panel to directly control the ultrasonic device to clean the ionization network 120. In addition, the user may also send a command to the controller via the operation panel to control the operating mode of the range hood. The controller may adjust the range hood's wind speed, smoking time, and other parameters accordingly based on the operating mode of the range hood.

[0029] The oil net device of the above-mentioned range hood utilizes the ionization net 120 to ionize the oil in the oil smoke, thereby adsorbing the oil on the ionization net 120, and then combines the ultrasonic device to vibrate and clean the ionization net to remove the adsorbed oil, thereby keeping the interior of the range hood clean and reducing the internal load of the range hood volute, which can effectively improve the oil absorption effect of the range hood and reduce the difficulty of cleaning.

[0030] It is understood that the specific structure and quantity of the oil net 110 and the ionization net 120 are not unique and can be adjusted according to actual needs. Figure 2 As shown, the oil net 110 is provided with holes for oil smoke to pass through, and the ionization net 120 can also be provided with holes for oil smoke to pass through. In this embodiment, the oil net 110 is provided with long strip holes, and the ionization net 120 is provided with grid-shaped holes, and the holes of the ionization net 120 are smaller than the holes of the oil net 110.

[0031] In one embodiment, the oil net 110 includes a front oil net and a rear oil net arranged in sequence along the inhalation direction of the range hood. The front oil net and the rear oil net are both located at the inhalation port of the range hood, and the ionizer net 120 is located between the front oil net and the rear oil net. After the range hood is started, the oil smoke passes through the front oil net, the ionizer net 120 and the rear oil net in sequence to complete the cleaning, and the cleaned smoke enters the interior of the range hood. Furthermore, in one embodiment, the holes of the front oil net and the rear oil net are staggered. Specifically, the two layers of oil nets can be designed to have the same structure, with only the hole positions slightly staggered, so as to increase the distance that the oil smoke moves in the oil net, which can further enhance the oil smoke cleaning effect.

[0032] In one embodiment, the number of layers of the ionization network 120 is two or more, and each layer of the ionization network 120 is connected to an ionization generating device and an ultrasonic device. Figure 3 As shown, the ionization generator and ultrasonic device 130 are integrated and installed in the range hood housing, enabling both ionization and ultrasonic vibration cleaning functions to be achieved through the same device. In this embodiment, three layers of ionization mesh 120 are used and positioned between the front and rear oil screens. Each layer of ionization mesh 120 is connected to the ionization generator and ultrasonic device 130. By ionizing the oil fumes with three layers of ionization mesh 120, the voltage applied to each layer of ionization mesh is reduced, minimizing the risk of electric shock caused by the charged ionization mesh, thereby improving the safety of the range hood.

[0033] The specific structure of the ultrasonic device is not unique. In one embodiment, the ultrasonic device includes an ultrasonic generator and a transducer vibration system disposed in the range hood. The transducer vibration system is connected to the ultrasonic generator and the ionizing network 120. Specifically, the ultrasonic generator can be connected to a controller. When the ultrasonic device needs to be activated, the controller controls the ultrasonic generator to output a square wave, which is then converted into a sine wave after matching. The sine wave is then transmitted to the transducer vibration system. The transducer vibration system transmits the sound wave via the horn and the vibration head to the workpiece being cleaned, i.e., the ionizing network 120. The vibration is transmitted through direct contact, driving the ionizing network 120 to vibrate.

[0034] Furthermore, in one embodiment, Figure 3 As shown, the oil screen device also includes an insulating layer 140 disposed between the ionization device and the ultrasonic device. Specifically, the insulating layer 140 can be located on the side of the ionization device and the ultrasonic device 130 facing the outside of the range hood, or it can completely enclose the ionization device and the ultrasonic device 130. The provision of the insulating layer can better prevent the risk of electric shock, further improving the safety of the range hood.

[0035] In addition, in one embodiment, the oil net device also includes a controller connected to the ionization generator and the ultrasonic device. The controller is used to control the ionization generator to supply power to the ionization net, as well as control the vibration frequency and / or amplitude of the ultrasonic device. Specifically, the controller receives instructions sent by the operation panel and controls the operation of the ionization generator and the ultrasonic device accordingly. The user can also send a gear adjustment instruction to the controller through the operation panel. The controller sets the working gear of the ultrasonic device according to the gear adjustment instruction. The ultrasonic device has different vibration frequencies and / or amplitudes at different working gears. Among them, when the vibration frequency is constant, the vibration cleaning speed can be increased by controlling the ultrasonic device to increase the amplitude; similarly, when the displacement amplitude is constant, increasing the vibration frequency of the ultrasonic device can significantly increase the acceleration and force of the particle, thereby speeding up the vibration cleaning speed. Therefore, when controlling the ultrasonic device to clean the ionization net 120, the user can set different gears according to actual needs for cleaning, thereby improving the convenience of using the range hood.

[0036] In one embodiment, a range hood is provided, comprising a range hood housing and the aforementioned oil screen device, the oil screen device being mounted within the range hood housing. The range hood further comprises a fan, a motor, and a volute, the volute being mounted within the range hood housing, the fan being mounted within the volute, and the motor being connected to the fan. Furthermore, the range hood comprises an operating panel, the oil screen device comprising a controller connected to the ionization device and the ultrasonic device, and the controller being connected to the operating panel and the motor.

[0037] Specifically, the controller is connected to the operation panel, motor, ionization generator, and ultrasonic device. Upon receiving a start command from the operation panel, the controller controls the motor and ionization generator to start operating, and the range hood begins operating. The motor drives the impeller to rotate, generating centrifugal force, creating a negative pressure zone inside the volute. Oil smoke outside the range hood housing enters the housing through the oil screen, and is then discharged into the common flue through the volute, impeller, and check valve. The cathode and anode of the ionization grid are connected to the ionization generator. When energized, it generates an electric field that ionizes oily particles and dust in the oil smoke after it passes through the oil screen, retaining them on the ionization grid and preventing them from entering the range hood, thereby keeping the interior of the range hood clean. After receiving the shutdown command sent by the operation panel, the controller stops supplying power to the motor, and at the same time controls the ionization generator to stop supplying power to the ionization network, and starts the ultrasonic device to drive the ionization network to vibrate at high speed. The ultrasonic device drives the ionization network to vibrate, so that the dirt attached to various parts of the ionization network is quickly loosened, and the grease attached to the ionization network is broken and falls off, completing the cleaning of the ionization network.

[0038] Specifically, the user can send a start command to the controller through the operation panel of the range hood. After receiving the start command, the controller controls the motor to start and the range hood starts to work. At the same time, the controller also controls the ionization generator to generate an electric field to supply power to the ionization network, which can absorb the oil fume particles and dust in the oil fume, thereby achieving the effect of purifying the oil fume. The cleaned smoke enters the volute and is discharged into the public flue. The oil fume particles adsorbed on the ionization network condense on the ionization network after a period of condensation. After the user finishes cooking, the user sends a shutdown command to the controller through the operation panel of the range hood. The controller stops supplying power to the motor and controls the ionization generator to stop supplying power to the ionization network. It also starts the ultrasonic device to drive the ionization network to vibrate at high speed, thereby quickly loosening the dirt attached to various parts of the ionization network.

[0039] Specifically, the oil net is provided with holes for oil smoke to pass through, and the ionizing net may also be provided with holes for oil smoke to pass through. In this embodiment, the oil net is provided with long strip holes, and the ionizing net is provided with grid-shaped holes, and the holes of the ionizing net are smaller than the holes of the oil net. In one embodiment, the oil net includes a front oil net and a rear oil net arranged in sequence along the inhalation direction of the range hood. The front oil net and the rear oil net are both located at the inhalation port of the range hood, and the ionizing net is located between the front oil net and the rear oil net. After the range hood is started, the oil smoke passes through the front oil net, the ionizing net and the rear oil net in sequence to complete the cleaning, and the cleaned smoke enters the interior of the range hood. In this embodiment, the holes of the front oil net and the rear oil net are staggered. The two layers of oil nets can be designed with the same structure, with only the hole positions slightly staggered, so as to increase the distance that the oil smoke moves in the oil net, which can further enhance the oil smoke cleaning effect.

[0040] In one embodiment, an ionization generator and ultrasonic device are integrated and installed within the range hood housing, achieving both ionization and ultrasonic vibration cleaning functions through the same device. A three-layer ionization screen is installed between the front and rear oil screens, with each layer connected to both the ionization generator and the ultrasonic device. This three-layer ionization screen ionizes the oil fumes, reducing the voltage applied to each layer and the potential risk of electric shock from charged ionization screens, thereby improving the safety of the range hood.

[0041] In one embodiment, the ultrasonic device includes an ultrasonic generator and a transducer vibration system mounted on the range hood. The transducer vibration system is connected to the ultrasonic generator and the ionization grid. The ultrasonic generator is connected to a controller. When the ultrasonic device is activated, the controller controls the ultrasonic generator to output a square wave, which is then converted into a sine wave after matching. The sine wave is then transmitted to the transducer vibration system, which transmits the sound wave via the horn and vibrating head to the workpiece being cleaned, i.e., the ionization grid. This direct contact transmission of vibration drives the ionization grid to vibrate.

[0042] In one embodiment, the oil screen device further includes an insulating layer disposed between the ionization device and the ultrasonic device. The insulating layer may be disposed on the side of the ionization device and the ultrasonic device facing the outside of the range hood. The insulating layer can better prevent the risk of electric shock and further improve the safety of the range hood.

[0043] The oil screen device also includes a controller connected to the ionization generator and the ultrasonic device. The controller controls the ionization generator's power supply to the ionization grid and the ultrasonic device's vibration frequency and / or amplitude. After the ionization grid generates an electric field to absorb oil fume particles, the grid is de-energized and the ultrasonic device activates and operates according to a set gear, causing each ionization grid to vibrate at high speed at an equilibrium position, quickly loosening any dirt clinging to the grid and thus cleaning the oil fume.

[0044] In one embodiment, the range hood further includes an oil cup disposed on the range hood housing. Specifically, the oil cup can be disposed below the ionization net, and the ionization net can be driven to vibrate by an ultrasonic device, so that the dirt attached to various parts of the ionization net is quickly loosened. The dirt that has fallen off cannot reattach and will fall into the oil cup under the action of gravity, thereby achieving the effect of cleaning the oil smoke. In addition, the installation angle of the range hood housing or the oil net of the range hood can be designed so that the dirt that has fallen off can slide along the range hood housing into the oil cup. For example, the oil net of a side-suction range hood has a certain tilt angle when installed. The dirt that has fallen off cannot reattach and will slide along the range hood housing into the oil cup under the action of gravity, thus completing the collection of the dirt.

[0045] The above-mentioned range hood uses an ionization net to ionize the oil in the oil smoke, thereby adsorbing the oil on the ionization net, and then uses an ultrasonic device to vibrate and clean the ionization net to remove the adsorbed oil, thereby keeping the interior of the range hood clean and reducing the internal load of the range hood volute. It can effectively improve the oil absorption effect of the range hood and reduce the difficulty of cleaning.

[0046] In order to facilitate a better understanding of the oil screen device of the range hood and the range hood, a detailed explanation is given below in conjunction with specific embodiments.

[0047] like Figure 3 As shown, the oil screen device provided by this application includes upper and lower oil screens 110, three layers of ionizing screens 120, an ionization generator and ultrasonic device 130, and an insulating layer 140. Holes are provided in both the upper and lower oil screens 110 and the ionizing screen 120 for oil smoke to pass through, allowing the smoke to pass smoothly through the screens and reach the volute. The two layers of oil screens 110 have identical structures, with only the holes slightly staggered. This increases the distance the smoke travels within the screens, further enhancing the oil smoke cleaning effect.

[0048] The oil screen device operates as follows: Under the influence of the range hood's suction, oil smoke passes through the front oil screen and into the inner side of the double-layer oil screen, reaching the ionizer 120. A DC voltage is applied to the positive and negative electrodes of the ionizer 120, forming an electric field that attracts oil smoke particles and dust from the smoke, purifying it. The cleaned smoke then passes through the rear oil screen and into the volute, where it is discharged into the common flue. After a period of condensation, the oil smoke particles adsorbed on the ionizer 120 condense on the ionizer 120. When the ionizer 120 is powered off, the ultrasonic device activates, causing each ionizer 120 to vibrate at high speed at its equilibrium position, rapidly loosening any impurities clinging to it. The oil screen 110 of a side-suction range hood is installed at a certain angle. Any impurities that fall off, unable to reattach, fall under the influence of gravity into the oil cup, effectively cleaning the smoke.

[0049] When the frequency of the ultrasonic device is constant, the vibration cleaning speed can be increased by controlling and increasing the amplitude. When the displacement amplitude of the ultrasonic device is constant, increasing the frequency of the ultrasonic device can significantly increase the acceleration and force of the particles, speeding up the vibration cleaning speed. Therefore, different gears can be set when performing ultrasonic cleaning. At the same time, to reduce the risk of electric shock caused by the charge on the ionization grid 120, three layers of ionization grid 120 are installed to ionize the oil smoke, reducing the voltage attached to each layer of ionization grid 120. At the same time, an insulating layer 140 is provided between the ionization generator and the ultrasonic device 130 to further prevent the risk of electric shock.

[0050] The range hood utilizes the above oil screen device. The ionizer mesh 120, located between the double-layered oil screen, traps oil particles in the fume, keeping the interior of the range hood clean. Once the grease solidifies, ultrasonic vibration cleaning shatters the grease, causing it to fall off along the housing and into the oil cup. This solves the problem of conventional oil screens poorly separating oil particles from fume, allowing them to enter the range hood, making cleaning difficult. It also addresses the issue of oil stains adhering to the ionizer, requiring frequent disassembly of the range hood for cleaning—a task that is often difficult for most households.

[0051] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An oil screen device for a range hood, characterized in that: The range hood comprises an oil net, an ionizing net, an ionizing generator and an ultrasonic device, wherein the oil net and the ionizing net are arranged at the smoke inlet of the range hood, the ionizing generator is connected to the ionizing net, and the ultrasonic device is connected to the ionizing net; The ionization generating device is used to supply power to the ionization network to form an electric field to absorb oil stains, and the ultrasonic device is used to vibrate and clean the ionization network to remove the adsorbed oil stains; The oil net comprises a front oil net and a rear oil net sequentially arranged along the inhalation direction of the range hood, the front oil net and the rear oil net are both located at the inhalation port of the range hood, and the ionizing net is located between the front oil net and the rear oil net; wherein the ionizing net is provided with grid-shaped holes, the holes of the front oil net and the rear oil net are staggered, and the holes of the ionizing net are smaller than the holes of the oil net; The ionization network has more than two layers, and each layer of the ionization network is connected to the ionization generating device and the ultrasonic device; the voltage attached to each layer of the multi-layer ionization network is smaller than the voltage attached to the single-layer ionization network.

2. The oil screen device for a range hood according to claim 1, characterized in that: It also includes an insulating layer arranged on the ionization generating device and the ultrasonic device.

3. The oil screen device for a range hood according to claim 1, characterized in that: It also includes a controller connected to the ionization generating device and the ultrasonic device, and the controller is used to control the ionization generating device to supply power to the ionization network, and to control the vibration frequency and / or amplitude of the ultrasonic device.

4. The oil screen device for a range hood according to any one of claims 1 to 3, characterized in that: The ultrasonic device includes an ultrasonic generator and a transducer vibration system which are arranged on the range hood. The transducer vibration system is connected to the ultrasonic generator and the ionization network.

5. A range hood, characterized in that: It comprises a range hood housing and the oil net device according to any one of claims 1 to 4, wherein the oil net device is arranged on the range hood housing.

6. The range hood according to claim 5, characterized in that: It also includes a wind wheel, a motor and a volute, the volute is arranged on the range hood housing, the wind wheel is arranged on the volute, and the motor is connected to the wind wheel.

7. The range hood according to claim 6, characterized in that: It also includes an operation panel, and the oil net device includes a controller connected to the ionization generating device and the ultrasonic device, and the controller is connected to the operation panel and the motor.

8. The range hood according to any one of claims 5 to 7, characterized in that: It also includes an oil cup arranged on the range hood housing.

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