Lipid separation filtration device and range hood applying same
By introducing a grease separation and filtration device into the range hood, the grease adhesion problem is solved by using the guide groove on the separation plate to shear and impact the grease, thus achieving efficient grease separation, reducing cleaning frequency, and improving fume extraction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG ARCAIR APPLIANCE CO LTD
- Filing Date
- 2022-09-19
- Publication Date
- 2026-07-14
Smart Images
Figure CN115435364B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to range hoods, and more particularly to a grease separation and filtration device and a range hood using the same. Background Technology
[0002] Commonly used range hoods on the market use a fan to extract cooking fumes from the environment. During the extraction process, the fumes flow through the fan blades and internal ducts, and the grease in the fumes adheres to the surfaces of the fan blades and ducts. Cleaning is very tedious, and even after cleaning, a thick layer of grease quickly adheres again, causing inconvenience to users. Summary of the Invention
[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in related technologies. To this end, the present invention proposes an oil separation and filtration device capable of...
[0004] To achieve the above objectives, the technical solution of the present invention is as follows:
[0005] The present invention also proposes a range hood having the above-mentioned grease separation and filtration device.
[0006] An oil separation and filtration apparatus according to a first aspect of the present invention includes:
[0007] The volute has an air inlet in the middle.
[0008] A fan unit is installed inside the volute. The fan unit includes a motor and a fan wheel. The motor drives the fan wheel to rotate and draw air from the air inlet.
[0009] A separation disc covers the air inlet and rotates. The separation disc is provided with blades that extend from the center of the separation disc to the periphery. Several blades are distributed at intervals around the center of the separation disc. The windward side of the blades is provided with guide grooves that extend along the length of the blades.
[0010] When the fan unit starts to extract air, the airflow is drawn into the air inlet through the gap between two adjacent blades. The separation disc rotates, and the guide groove has a shearing and impacting effect on the flowing airflow.
[0011] The grease separation and filtration device according to embodiments of the present invention has at least the following beneficial effects: most of the grease is sheared and collided away from the fumes by the separation disc, and the gas carries only a small portion of the grease into the interior of the air inlet, thereby efficiently reducing the amount of grease adhering to the air duct inside the volute, and allowing the user to reduce the frequency of cleaning the interior of the volute.
[0012] According to some embodiments of the present invention, the guide channel has a first guide surface and a second guide surface, and the first guide surface and the second guide surface are connected to form a bent shape in the longitudinal section of the guide channel.
[0013] According to some embodiments of the present invention, the first guide surface is perpendicular to the axial direction of the separation disk.
[0014] According to some embodiments of the present invention, the first guide surface forms a first angle with a virtual space plane perpendicular to the axis of the separation disk, and the first guide surface is inclined toward the interior of the air inlet.
[0015] According to some embodiments of the present invention, the second guide surface is parallel to the axial direction of the separation disk.
[0016] According to some embodiments of the present invention, the second guide surface forms a second tilt angle with the axial direction of the separation disk, and the second tilt angle is an acute angle.
[0017] According to some embodiments of the present invention, the second guide surface is a wavy surface with at least two troughs.
[0018] According to some embodiments of the present invention, the impeller and the separation disk are coaxially connected, and the motor drives the impeller and the separation disk to rotate synchronously.
[0019] According to some embodiments of the present invention, an oil receiving ring is further included, the oil receiving ring being arranged around the separation disk, the oil receiving ring having an oil receiving groove circumferentially provided inside the oil receiving ring, the end of the blade away from the center of the separation disk extending into the oil receiving groove, and the oil receiving ring having an oil outlet communicating with the oil receiving groove.
[0020] According to a second aspect of the present invention, a range hood includes a body, a smoke collection box, and a grease separation and filtration device. The grease separation and filtration device is installed inside the smoke collection box. The exhaust port of the volute is arranged facing upwards, and the axial direction of the air inlet of the volute is horizontal. A filter screen is provided on the body, and along the airflow direction, the filter screen is located upstream of the air inlet.
[0021] The range hood according to the embodiments of the present invention has at least the following beneficial effects: high overall fume extraction efficiency and efficient separation of grease from the fume.
[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0024] Figure 1 This is a schematic diagram of the structure and assembly of an oil separation and filtration device;
[0025] Figure 2 yes Figure 1 A structural decomposition diagram;
[0026] Figure 3 This is a schematic diagram of the separation disc structure;
[0027] Figure 4 yes Figure 3 A partial cross-sectional view of one embodiment of the blade;
[0028] Figure 5 yes Figure 3 A partial cross-sectional view of another embodiment of the blade;
[0029] Figure 6 yes Figure 4 Another illustration of the logo;
[0030] Figure 7 yes Figure 5 Another illustration of the logo;
[0031] Figure 8 This is a schematic diagram of a range hood.
[0032] Figure label:
[0033] 100 volute; 110 air inlet; 120 air outlet; 210 motor; 220 impeller; 300 separator plate; 301 windward side; 302 leeward side; 303 solid body; 304 frame; 310 blade; 320 guide channel; 321 first guide surface; 322 second guide surface; 330 virtual space plane; 331 first tilt angle; 332 second tilt angle; 400 oil receiving ring; 500 body; 510 smoke collection box. Detailed Implementation
[0034] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0035] This invention relates to an oil separation and filtration device, comprising a volute 100, a fan unit, and a separation disc 300.
[0036] like Figure 1 and Figure 2As shown, the volute 100 has openings in the middle and side walls. The opening in the middle of the volute 100 serves as an air inlet 110, and the opening in the side wall serves as an air outlet 120. The fan unit is installed inside the volute 100, preferably inside the air inlet 110. The fan unit includes a motor 210 and a fan wheel 220. The motor 210 drives the fan wheel 220 to rotate, thereby drawing in external air from the air inlet 110 and discharging it from the air outlet 120. A separator 300 is installed at the air inlet 110, covering the air inlet 110 so that the airflow, under the suction of the fan unit, must pass through the separator 300 before entering the volute 100.
[0037] Among them, such as Figure 2 and Figure 3As shown, in this embodiment, the air inlet 110 of the volute 100 is circular, and the corresponding separator 300 is disc-shaped. The middle part of the separator 300 can be a solid 303, which is connected to the motor 210, so that the separator 300 and the impeller 220 are coaxial and rotate synchronously under the drive of the motor 210. The separator 300 and the impeller 220 can also use different motors 210 to rotate synchronously or differentially. Blades 310 extend radially from the solid 303 in the middle of the separator 300. The blades 310 can be straight strips or strip structures with a certain arc shape, etc. Several blades 310 are distributed at intervals around the center of the separator 300. Preferably, the blades 310 are evenly spaced, and the intervals between the blades 310 form a gap of a certain width. The ends of each blade 310 away from the center of the separator 300 can be connected to a frame 304. Depending on the rotation direction of the separating disc 300, the blades 310 have a windward side 301 and a leeward side 302. The separating disc 300 and the impeller 220 are preferably coaxial and rotate in the same direction. Airflow passes through the gaps between the blades 310 of the separating disc 300. A guide groove 320 is provided on the windward side 301 of the blades 310. The guide groove 320 extends along the length of the blades 310, that is, it extends from the center of the separating disc towards the frame 304. The grease separation and filtration device is used in range hoods to absorb grease. During operation, the grease is drawn into the volute 100 along the axial direction of the air inlet 110 by the fan unit. At this time, the separating disc 300 rotates, and the rotation direction of the separating disc 300 is perpendicular to the inflow direction of the grease. When the fumes flow through the gaps between the blades 310, the guide grooves 320 on the blades 310 impact and shear the fumes. The surface of the guide grooves 320 comes into contact with the fumes, and the grease in the fumes adheres to the surface of the guide grooves 320, thus separating the grease from the fumes. After the grease adheres to the guide grooves 320, under the centrifugal force of the rotating separation disc 300, the grease is guided and collected towards the end of the blades 310 away from the center. The gas after the fumes are separated slides over the surface of the guide grooves 320 under the suction force and flows through the gaps between the blades 310 into the air inlet 110. Before entering the volute 100, the grease is struck by the blades 310, changing its axial movement to radial movement along the guide groove 320. Combined with the extraction efficiency of the volute 100 and the fan unit, according to experimental data, at a rotor speed of 2000 rpm, the air velocity at the inlet 110 is 4.5 m / s, the air velocity at the outlet 120 is 12.65 m / s, the static pressure at the inlet 110 is 25.27 Pa, the relative atmospheric pressure at the outlet 120 is 0 Pa, and the air volume is 0.318 m³ / s. 3 / s, the grease separation rate of the separation disc 300 can reach ≥98%. Most of the grease is sheared and collided away from the fumes by the separation disc 300, and the gas carries only a small portion of the grease into the air inlet 110, thereby effectively reducing the amount of grease adhering to the air duct inside the volute 100, and allowing users to reduce the frequency of cleaning the inside of the volute 100.
[0038] In some embodiments of the present invention, such as Figure 4 and Figure 5 As shown, viewed from the longitudinal section of the guide channel 320, the aforementioned longitudinal direction is parallel to the axial direction of the separation disk 300, and the guide channel 320 is perpendicular to the outer side of the separation disk 300 towards the inner side. The guide channel 320 has a first guide surface 321 and a second guide surface 322, both of which extend from the middle of the separation disk 300 towards the frame 304. The first guide surface 321 and the second guide surface 322 are connected to each other. In this embodiment, the connection between the first guide surface 321 and the second guide surface 322 is an arc-shaped connection. The first guide surface 321 and the second guide surface 322 form a bend, which can be as follows: Figure 4 The L-shaped guide channel 320 formed by the first guide surface 321 and the second guide surface 322 serves as the windward side 301 of the blade 310. During operation, the guide channel 320 shears the fumes, and the bending shape of the first guide surface 321 and the second guide surface 322 has an axial lateral cutting effect and a parallel axial collision effect on the airflow relative to the separation disk 300.
[0039] Specifically, the spatial plane containing the first guide surface 321 is transversely tangential to the axial direction of the separation disk 300. For example... Figure 5 As shown, the spatial plane containing the first guide surface 321 is perpendicular to the axial direction of the separation disk 300. Figure 3 As shown, the axial direction of the separator 300 is front-to-back. The front side of the diagram represents the outer side of the separator 300, and the rear side represents the inner side. The guide groove 320 faces outward, while the first guide surface 321 is parallel to the front side. Alternatively, as... Figure 6As shown, a virtual space plane 330 is drawn out at the junction of the first guide surface 321 and the second guide surface 322. This virtual space plane 330 is perpendicular to the axial direction of the separation disk 300. The space plane where the first guide surface 321 is located has a certain inclination angle with the virtual space plane 330. This inclination angle is defined as the first inclination angle 331. The first guide surface 321 is inclined towards the inner side of the separation disk 300. When the flue gas flows through the separation disk 300, the first guide surface 321 cuts through the flue gas. The grease hits the first guide surface 321. According to the rotation direction of the separation disk 300, the grease will flow along the first guide surface 321 towards the position where it connects with the second guide surface 322. Then, under the centrifugal force, it will gather along the guide groove 320 towards the frame 304. The gas, under the extraction action of the fan unit, flows along the first guide surface 321 to the gap between the two blades 310 and enters the air inlet 110. The spatial angle of the first guide surface 321 serves two purposes: on the one hand, it shears the flue gas, and on the other hand, it ensures the flow of gas and reduces wind resistance.
[0040] The second guide surface 322 has an impact and collision effect on the flue gas that is parallel to the axial direction of the separation disk 300. Specifically, such as... Figure 7 As shown, the second guide surface 322 is parallel to the axial direction of the separation disk 300, and with the aforementioned virtual space plane 330 as a reference, the second guide surface 322 is perpendicular to the virtual space plane 330. Alternatively, it can be as follows: Figure 6 As shown, the second guide surface 322 and the axial direction of the separation disk 300 form a second inclination angle 332, which is an acute angle. However, with the aforementioned virtual space plane 330 as a reference, the angle between the second guide surface 322 and the virtual space plane 330 can be an obtuse angle, i.e., the second inclination angle 332 can be as follows: Figure 6 As shown, the thickness of the blade 310 between the front side of the second guide surface 322 and the leeward side 302 of the blade 310 gradually increases towards the first guide surface 321. Alternatively, the angle between the second guide surface 322 and the virtual space plane 330 can be an acute angle. During operation, the second guide surface 322 directly impacts the axially flowing flue gas. Grease flows along the second guide surface 322 towards the junction, while the airflow flows along the second guide surface 322 towards the first guide surface 321, increasing the collision area between the flue gas and the guide channel 320 during relative flow and improving the efficiency of grease separation. Furthermore, as... Figure 5 As shown, the second guide surface 322 is configured as a wavy surface with at least two troughs. It can be a wave shape extending from the outer to the inner side, further increasing the collision area between the second guide surface 322 and the flue gas.
[0041] After grease adheres to the guide groove 320, it flows and accumulates towards the frame 304 under the centrifugal force of the rotating separation disc 300. In some specific embodiments of the present invention, an oil receiving ring 400 is provided around the periphery of the separation disc 300, and the oil receiving ring 400 surrounds the outer periphery of the separation disc 300. An oil receiving groove is provided inside the oil receiving ring 400, and the end of the blade 310 away from the center of the separation disc 300 extends into the oil receiving groove. An oil outlet is provided on the side wall of the oil receiving ring 400, and the oil outlet is connected to the oil receiving groove. The oil receiving ring 400 is installed according to the installation direction of the separation disc 300, so that the oil outlet is at a lower position. Grease in the guide groove 320 is thrown into the oil receiving groove, flows downward along the oil receiving groove, and then is discharged from the oil outlet.
[0042] This invention also relates to a range hood, such as... Figure 8 As shown, the range hood includes a body 500, a smoke collection box 510, and a grease separation and filter device. Circuit boards, control panels, and other components are mounted on the body 500. The smoke collection box 510 is connected to the body 500, and the grease separation and filter device is installed inside the smoke collection box 510. In use, the body 500 faces the stovetop. Under the suction of the grease separation and filter device, the smoke enters the smoke collection box 510 through the smoke inlet of the body 500, and then passes through the grease separation and filter device to separate the grease and gas before being discharged. To improve grease separation efficiency, a filter screen (not shown in the figure) can be installed at the smoke inlet of the body 500 along the flow direction of the smoke to perform preliminary separation of the grease in the smoke, followed by secondary separation by the grease separator. In this embodiment, the grease separation and filter device is installed in a front-to-back orientation, that is, the axis of the air inlet 110 of the volute 100 is horizontally oriented in the front-to-back direction, and the exhaust outlet 120 of the volute 100 is set upwards. After the flue gas enters the smoke collection box 510 from the bottom of the unit 500, it changes direction, from vertical upward flow to axial flow along the air inlet 110. The separation disc 300 shears the flue gas, and the separated gas is discharged upward along the spiral path of the volute 100. The overall fume extraction efficiency is high, and it effectively separates the grease in the fume.
[0043] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0044] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims
1. An oil separation and filtration device, characterized in that, include: The volute (100) has an air inlet (110) in the middle. A fan unit is installed inside the volute (100). The fan unit includes a motor (210) and a fan wheel (220). The motor (210) drives the fan wheel (220) to rotate and draw air at the air inlet (110). A separation disc (300) is provided on the air inlet (110) and rotates thereon. The separation disc (300) is provided with blades (310), which extend from the center of the separation disc (300) to the periphery. Several blades (310) are distributed at intervals around the center of the separation disc (300). The windward side (301) of the blades (310) is provided with a guide groove (320), which extends along the length of the blades (310). When the fan unit starts to pump air, the airflow is drawn into the air inlet (110) through the gap between two adjacent blades (310), the separation disk (300) rotates, and the guide groove (320) has a shearing and impacting effect on the airflow. The guide channel (320) has a first guide surface (321) and a second guide surface (322). The first guide surface (321) and the second guide surface (322) are connected to form a bent shape in the longitudinal section of the guide channel (320). The first guide surface (321) forms a first tilt angle (331) with the virtual space plane (330) perpendicular to the axis of the separation disk (300), and the first guide surface (321) is inclined toward the inside of the air inlet (110); The second guide surface (322) is parallel to the axial direction of the separation disk (300).
2. The grease separation and filtration device according to claim 1, characterized in that: The second guide surface (322) is a wave surface with at least two troughs.
3. The grease separation and filtration device according to claim 1, characterized in that: The impeller (220) and the separation disk (300) are coaxially connected, and the motor (210) drives the impeller (220) and the separation disk (300) to rotate synchronously.
4. The grease separation and filtration device according to claim 1, characterized in that: It also includes an oil receiving ring (400), which is arranged around the separation disk (300). The oil receiving ring (400) has an oil receiving groove in the circumferential direction inside. The end of the blade (310) away from the center of the separation disk (300) extends into the oil receiving groove. The oil receiving ring (400) has an oil outlet communicating with the oil receiving groove.
5. A range hood, characterized in that: The device includes a body (500), a smoke collection box (510), and an oil separation and filtration device as described in any one of claims 1 to 4. The oil separation and filtration device is installed inside the smoke collection box (510). The exhaust port (120) of the volute (100) is arranged facing upwards, and the air inlet (110) of the volute (100) is oriented horizontally. A filter screen is provided on the body (500) along the airflow direction, and the filter screen is located upstream of the air inlet (110).