Novel oil fume separating disc and range hood capable of preventing oil sticking

Abstract

The application discloses a novel oil-sticking-preventing separation disc and a range hood thereof. The separation disc comprises a fixed disc and a plurality of long strip-shaped interception wind blades. The plurality of interception wind blades are distributed radially and fixed to the fixed disc. A gap through which oil fume flows is formed between any two adjacent interception wind blades. At least one bending part is arranged on the cross section of the interception wind blade along the radial direction of the fixed disc. All or part of the interception wind blades are provided with one or more heating parts for heating the interception wind blades. The application increases the temperature of the interception wind blades by arranging a heating medium in the heating part, so that the temperature of the interception wind blades is close to the temperature of the oil fume, thereby preventing the solid-liquid mixture in the oil fume from being condensed on the interception wind blades, and realizing the effects of oil-sticking prevention, automatic cleaning of the interception wind blades and manual cleaning-free.

Description

Technical Field

[0001] This invention relates to the field of air purifiers, specifically to a novel oil fume separation disc and range hood that prevents oil adhesion. Background Technology

[0002] With the development of technology, range hoods used for purifying kitchen fumes have become increasingly feature-rich. However, the oil fume separation rate of range hoods still decreases after long-term use. This is because during use, oil fumes pass through a separation disc (a disc-shaped structure formed by multiple intercepting fan blades fixed together to intercept oil fumes), and some of the solid-liquid mixture in the oil fumes adheres to the separation disc. Over time, a layer of this solid-liquid mixture accumulates on the separation disc. This layer not only reduces the distance between adjacent intercepting fan blades, decreasing the airflow of the separation disc, but also increases its weight, reducing its rotation speed and consequently lowering the separation efficiency. Therefore, after long-term use of a range hood, the solid-liquid mixture on the separation disc needs to be cleaned. However, because the separation disc is covered with a greasy mixture, disassembly is very troublesome, and cleaning is also very difficult and often impossible to completely remove. Summary of the Invention

[0003] This invention discloses a novel oil fume separation disc and its range hood that prevents oil sticking. By heating the intercepting fan blades and the oil receiving disc, the oil fumes are prevented from condensing on the intercepting fan blades, thus achieving an anti-oil sticking effect and eliminating the need for manual cleaning.

[0004] To solve the above-mentioned technical problems, in a first aspect, the present invention provides a novel oil fume separator that prevents oil adhesion, comprising:

[0005] Fixed plate;

[0006] Multiple elongated intercepting fan blades are arranged radially and fixed to the fixed plate, and a gap is formed between any two adjacent intercepting fan blades so that the oil fume airflow can pass through.

[0007] The intercepting fan blade has at least one bent portion on its cross-section along the radial direction of the fixed plate, and all or part of the intercepting fan blade is provided with one or more heating parts for heating the intercepting fan blade.

[0008] As an optional implementation, in an embodiment of the first aspect of the present invention, the heating part is a mounting cavity for inserting a heating element, a heating cavity for filling with a heating medium, or a heating channel for introducing a heating medium.

[0009] As an optional implementation, in the embodiment of the first aspect of the present invention,

[0010] The heating section is a heating channel for introducing the heating medium;

[0011] The fixed plate is provided with a first cavity for introducing the heating medium, and the first cavity is connected to each of the intercepting fan blades provided with the heating channel.

[0012] As an optional implementation, in an embodiment of the first aspect of the present invention, the heating part is a heating chamber for filling with a heating medium;

[0013] The fixed plate is provided with a first cavity for filling with a heating medium, and the first cavity is connected to each of the intercepting fan blades provided with the heating cavity.

[0014] As an optional implementation, in an embodiment of the first aspect of the present invention, the heating part is a mounting cavity for inserting a heating element;

[0015] The fixed plate is provided with a first cavity for supplying power to the heating element, and the first cavity is connected to each of the intercepting fan blades provided with the heating element.

[0016] As an optional implementation, in an embodiment of the first aspect of the present invention, the heating part extends along the length extension direction of the intercepting fan blade, and the heating part is of the same length or unequal length to the intercepting fan blade.

[0017] As an optional implementation, in an embodiment of the first aspect of the present invention, the intercepting blade includes a blade body and a root portion disposed at one end of the blade body, the heating portion extends from the root portion to the blade body, and the root portion is fixed to the fixing plate.

[0018] As an optional implementation, in an embodiment of the first aspect of the present invention, the fixed disk is provided with a circumferential groove communicating with the first cavity. The circumferential groove is arranged along the circumference of the fixed disk and opens outward. The root is inserted into the circumferential groove so that the heating part provided at the root communicates with the first cavity.

[0019] As an optional implementation, in an embodiment of the first aspect of the present invention, the fixing plate includes an upper fixing plate portion and a lower fixing plate portion, the upper fixing plate portion and the lower fixing plate portion are hollow inside, and the upper fixing plate portion and the lower fixing plate portion are connected to each other to form the first cavity inside, and the circumferential groove is formed at the connection between the upper fixing plate portion and the lower fixing plate portion.

[0020] As an optional implementation, in the embodiment of the first aspect of the present invention,

[0021] The lower part of the upper fixed plate portion is provided with a first groove, and the upper part of the lower fixed plate portion is provided with a second groove. When the upper fixed plate portion and the lower fixed plate portion are connected, the second groove and the first groove cooperate to form the circumferential groove.

[0022] Both the first groove and the second groove are sawtooth grooves.

[0023] As an optional implementation, in the embodiment of the first aspect of the present invention,

[0024] The intercepting blade includes a first sub-blade and a second sub-blade, and one side surface of the second sub-blade is connected to one side surface of the first sub-blade so that the cross-section of the intercepting blade is a V-shaped cross-section.

[0025] The first sub-blade and the second sub-blade include the blade body and the root. The root of the first sub-blade and the root of the second sub-blade are respectively provided with a first slot and a second slot. When the root is connected to the fixing plate, the first slot is engaged with the upper fixing plate and the second slot is engaged with the lower fixing plate.

[0026] As an optional implementation, in an embodiment of the first aspect of the present invention, the length extension direction of the first slot is in the same direction as the width direction of the first sub-blade, the length extension direction of the second slot is in the same direction as the width direction of the second sub-blade, the first slot extends from the edge of the root of the first sub-blade to the intersection of the first sub-blade and the second sub-blade, and the second slot extends from the edge of the root of the second sub-blade to the intersection of the second sub-blade and the first sub-blade.

[0027] As an optional implementation, in an embodiment of the first aspect of the present invention, the cross-section of the intercepting blade is any one of V-shape, W-shape, Z-shape, or polygon.

[0028] As an optional implementation, in an embodiment of the first aspect of the present invention, the intercepting blade includes a first sub-blade and a second sub-blade, one side surface of the second sub-blade is connected to one side surface of the first sub-blade so that the cross-section of the intercepting blade is a V-shaped cross-section, and the first sub-blade and / or the second sub-blade are provided with the heating part.

[0029] As an optional implementation, in an embodiment of the first aspect of the present invention, one side surface of the second sub-blade is connected to one side surface of the first sub-blade to form an intersection, and the heating part is disposed at the intersection.

[0030] As an optional implementation, in an embodiment of the first aspect of the present invention, the side of the V-shaped cross-section that is concave is the inner side of the intercepting blade, and the other side corresponding to the side of the V-shaped cross-section that is concave is the outer side of the intercepting blade.

[0031] One side surface of the second sub-blade is connected to one side surface of the first sub-blade to form an intersection. The intersection is provided with a first protrusion structure, and the first protrusion structure is located on the inner side of the intercepting blade. The heating part is located between the first protrusion structure and the intersection.

[0032] As an optional implementation, in an embodiment of the first aspect of the present invention, the length extension direction of the first protrusion structure is in the same direction as the extension direction of the heating part, and the outer boundary of the cross-section of the protrusion structure along its length direction is arc-shaped, wavy, zigzag, or a combination thereof.

[0033] As an optional implementation, in an embodiment of the first aspect of the present invention, the bisectors of each of the intercepting blades coincide, and the first sub-blade and the second sub-blade of the intercepting blade are symmetrical about the bisector of the intercepting blade.

[0034] As an optional implementation, in an embodiment of the first aspect of the present invention, the cross-sectional shape of the heating part along its length direction is one or any combination of a circle, an ellipse, a fan shape or a polygon.

[0035] As an optional implementation, in an embodiment of the first aspect of the present invention, the intercepting fan blades of the separation disk are distributed in one or more layers, and each layer of the intercepting fan blades includes a plurality of intercepting fan blades.

[0036] As an optional implementation, in an embodiment of the first aspect of the present invention, the intercepting fan blade is manufactured by an extrusion molding process, and the material of the intercepting fan blade is metal or plastic.

[0037] Secondly, the present invention also provides a range hood, which includes an anti-oil-sticking separation disc as described above, wherein the driving device is connected to the fixed disc of the separation disc and is used to drive the fixed disc to rotate, thereby driving the plurality of intercepting fan blades to rotate.

[0038] As an optional implementation, in an embodiment of the second aspect of the present invention, the driving device is a motor, the motor includes a motor body and a rotating shaft fixedly connected to the motor body, the rotating shaft is fixedly connected to the fixed disk, and the rotating shaft is provided with a hollow cavity, the hollow cavity being connected to the heating part.

[0039] As an optional implementation, in an embodiment of the second aspect of the present invention, the fixed disk is provided with a protrusion, the protrusion is provided with a shaft hole corresponding to the rotating shaft, and the rotating shaft extends into the shaft hole;

[0040] The outer periphery of the protruding post is provided with multiple through holes, which are connected to the hollow cavity of the rotating shaft and the heating part.

[0041] The novel oil-resistant separator disclosed in this invention has the following beneficial effects:

[0042] (1) No manual cleaning of the separation disc is required, and it has a good anti-oil sticking effect. The anti-oil sticking separation disc provided in this embodiment can be continuously heated by the heating part set in the intercepting fan blade, so that the solid-liquid mixture does not condense when it collides with the intercepting fan blade due to the temperature being higher than the intercepting fan blade. As a result, when the separation disc separates the gas and solid-liquid mixture in the oil fume, it separates the solid-liquid mixture on the intercepting fan blade or keeps it basically non-sticky. Therefore, after long-term use of the separation disc provided in this embodiment, no manual cleaning of the separation disc is required, which effectively improves the user experience.

[0043] (2) Easy installation. In this embodiment, a circumferential groove is opened on the fixed plate, and the root of the intercepting fan blade can be inserted into the circumferential groove, thereby realizing the connection between the first cavity of the fixed plate and the heating part. At the same time, a slot is set at the root of the connecting fan blade, which can be used to fix the root of the intercepting fan blade to the fixed plate. This connection method is not only reliable, but also very convenient to install.

[0044] (3) Uniform heating effect, effectively ensuring the anti-oil sticking effect. The range hood with the anti-oil sticking separation disc provided in this embodiment provides a heating part and a connecting part at the root of the intercepting fan blade, and a cavity is provided on the motor shaft. The heating part, the connecting part and the cavity on the motor shaft together form a second channel for the introduction of the heating medium. By adopting this internal heating method, the introduced heating medium can flow over the intercepting fan blade under the action of the centrifugal force of the rotation of the separation disc and uniformly heat the intercepting fan blade. This prevents the solid-liquid mixture from condensing when it collides with the intercepting fan blade, thereby preventing the solid-liquid mixture from adhering to the intercepting fan blade. Attached Figure Description

[0045] Figure 1 This is a structural diagram of the anti-oil-sticking separator provided in Embodiment 1 of the present invention;

[0046] Figure 2 This is a structural diagram of the intercepting wind vane provided in Embodiment 1 of the present invention;

[0047] Figure 3 This is a structural schematic diagram of the intercepting wind blade provided in Embodiment 1 of the present invention from another perspective;

[0048] Figure 4 This is an exploded structural diagram of the fixed disk provided in Embodiment 1 of the present invention;

[0049] Figure 5 This is a schematic diagram of the structure of the fixed disk provided in Embodiment 1 of the present invention;

[0050] Figure 6 This is a schematic diagram of the upper fixing plate provided in Embodiment 1 of the present invention;

[0051] Figure 7 This is a cross-sectional structural diagram of the connection between the fixed disk and the intercepting fan blades provided in Embodiment 1 of the present invention;

[0052] Figure 8 This is a structural diagram of the heating unit provided in Embodiment 2 of the present invention at the location of the intercepting fan blade;

[0053] Figure 9 These are structural diagrams illustrating different heating element configurations provided in Embodiment 2 of the present invention;

[0054] Figure 10 This is a structural diagram of the double-layer anti-sticking oil separation disc provided in Embodiment 2 of the present invention;

[0055] Figure 11 This is a side view of the heating element provided in Embodiment 3 of the present invention, which is disposed on the first sub-blade and / or the second sub-blade;

[0056] Figure 12 This is a side view of the heating section provided in Embodiment 4 of the present invention, which is located at both the intersection section and on both the first sub-blade and / or the second sub-blade;

[0057] Figure 13 This is a side view of the heating element disposed inside the intercepting fan blade according to Embodiment 5 of the present invention;

[0058] Figure 14 This is a side view of the present invention, provided in Embodiment 6, in which the heating element is disposed inside the intercepting fan blade and the intercepting fan blade is provided with a first protruding structure;

[0059] Figure 15 This is a structural diagram of the range hood provided in Embodiment 7 of the present invention;

[0060] Figure 16 This is an exploded view of the range hood provided in Embodiment 7 of the present invention;

[0061] Figure 17 This is an internal structural diagram of the range hood provided in Embodiment 7 of the present invention. Detailed Implementation

[0062] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0063] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0064] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0065] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0066] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0067] The technical solution of the present invention will be further described below with reference to the embodiments and accompanying drawings.

[0068] Example 1

[0069] Please see also Figures 1 to 3 as well as Figure 6Embodiment 1 of the present invention provides an oil-resistant separation disc, which includes a fixed disc 2b and a plurality of elongated intercepting fan blades 2a. The plurality of intercepting fan blades 2a are radially distributed and fixed to the fixed disc 2b. A gap 2c is formed between any two adjacent intercepting fan blades 2a, through which the oil fume airflow can pass. The intercepting fan blade 2a has at least one bent portion on its cross-section along the radial direction of the fixed disc 2b. All or part of the intercepting fan blades 2a are provided with one or more heating parts 21 for heating the intercepting fan blade 2a.

[0070] Specifically, the intercepting fan blade 2a refers to a long, strip-shaped structure that can be installed on a fixed disk 2b of the oil fume separation disk and rotates along with the fixed disk 2b when the fixed disk 2b rotates under external force, thereby achieving the interception and separation of grease and / or solid mixtures in the oil fumes. Preferably, the intercepting fan blade 2a is a flat, long strip structure. The purpose of using a flat, long strip structure for the intercepting fan blade 2a is that since the intercepting fan blade 2a needs to rotate at high speed to intercept the oil fume airflow, if the thickness of the intercepting fan blade 2a is too large, it may affect the rotational speed of the intercepting fan blade, which may affect the effectiveness of the intercepting fan blade 2a in intercepting the oil fume airflow. Therefore, the intercepting fan blade 2a of the present invention preferably adopts a flat, long strip structure.

[0071] It should be noted that when the intercepting fan blades 2a are installed on the fixed plate 2b of the oil fume separation plate, in order to improve the oil fume separation efficiency, the number of intercepting fan blades 2a should be multiple, specifically 100 to 300 blades. Furthermore, a gap should be formed between two adjacent intercepting fan blades 2a so that the oil fume airflow can enter into the gap and come into contact with the intercepting fan blades 2a, thereby achieving the purpose of oil fume separation.

[0072] When the intercepting fan blades 2a are installed on the oil fume separation disc and the disc rotates at a certain speed, the oil fume airflow enters the disc from one side. As the airflow passes through the gap between adjacent intercepting fan blades 2a, grease, particulate matter, and other contaminants in the oil fume collide with the surfaces of the intercepting fan blades on both sides of the gap and are adsorbed onto the sides of the intercepting fan blades. These contaminants are then flung out radially along the intercepting fan blades 2a, thus achieving the oil fume separation effect. To provide the power for the oil fume airflow to pass through the separation disc, a negative pressure fan can be used to provide the suction power, or the high-speed rotation of the separation disc itself can generate the suction power.

[0073] In this patent, a heating element 21 is provided on the intercepting fan blade 2a, which can be used to heat the intercepting fan blade, thereby increasing its temperature. When the oil fume airflow passes through the intercepting fan blade 2a, because the temperature of the intercepting fan blade is close to that of the oil fume airflow, the oil fume airflow will not condense and adhere to the surface of the intercepting fan blade. This allows the grease and / or solid mixture in the oil fume airflow to be thrown out, which improves the separation rate of the oil fume airflow to a certain extent and also reduces the cleaning frequency of the intercepting fan blade.

[0074] It should be understood that the heating element 21 can be installed on the intercepting fan blade 2a or inside the intercepting fan blade 2a.

[0075] In this embodiment, the heating part 21 is a mounting cavity for inserting a heating element, a heating cavity for filling with a heating medium, or a heating channel for introducing a heating medium.

[0076] As an optional implementation, the heating unit 21 is a heating channel for introducing a heating medium. The fixed plate 2b is provided with a first cavity 211 for introducing the heating medium, and the first cavity 211 is connected to each intercepting fan blade 2a with a heating channel. Specifically, the heating channel is a through hole provided on the intercepting fan blade 2a. The heating medium can be steam or hot water. The heating medium flows from the first cavity 211 to the heating channel and then escapes from the heating channel. During the process of flowing through the heating channel of the intercepting fan blade 2a, the heating medium conducts its own heat to the intercepting fan blade 2a, causing the intercepting fan blade 2a to heat up. This prevents the solid-liquid mixture in the oil fume from condensing on the intercepting fan blade 2a, thereby achieving the effect of preventing oil sticking.

[0077] As an alternative implementation, the heating unit 21 is a heating chamber for filling with a heating medium. The fixed plate 2b is provided with a first cavity 211 for filling with the heating medium, and the first cavity 211 is connected to each intercepting fan blade 2a with a heating channel. Specifically, the heating cavity is a blind hole provided on the intercepting fan blade 2a. The heating medium can also be steam or hot water. The heating medium flows from the first cavity to the heating channel and stays in the heating channel, where it can conduct its own heat to the intercepting fan blade 2a. Because the heating cavity is a blind hole, the heat will not dissipate, thus better ensuring the temperature of the intercepting fan blade, so that the solid-liquid mixture in the oil fume will not condense on the intercepting fan blade 2a, thereby achieving the effect of preventing oil sticking.

[0078] As another optional implementation, the heating section 21 is a mounting cavity for inserting a heating element; the fixing plate 2b is provided with a first cavity 211 for supplying power to the heating element, and the first cavity is connected to each intercepting fan blade equipped with a heating element. Specifically, the heating medium can be a heating tube, heating wire, heating plate, etc., disposed in the heating cavity. A circuit board can be disposed in the first cavity 211 to introduce external electricity into the heating medium of the heating tube, heating wire, or heating plate, etc., in each intercepting fan blade 2a, thereby heating the intercepting fan blade and preventing the solid-liquid mixture in the oil fume from condensing on the intercepting fan blade 2a, thus achieving the effect of preventing oil sticking.

[0079] Therefore, regardless of whether a heating element or a heating medium is used, since the heating part 21 is always a heating cavity or a heating channel, when heating the intercepting fan blades with a heating element or a heating medium, it adopts an internal heating method. This method can not only reduce heat loss, but also has higher heating efficiency and is more environmentally friendly and efficient.

[0080] Furthermore, traditional methods for cleaning the separator disc typically involve disassembling it for individual cleaning, or spraying high-temperature steam or liquid onto the outside of the disc. However, both of these methods have limitations. Disassembling the disc for cleaning adds an extra step, making disassembly and reassembly cumbersome. Because of the large number of interceptor blades 2a and the small gaps between adjacent blades, cleaning is difficult, time-consuming, and labor-intensive, often resulting in missed areas and unsatisfactory cleaning results. Spraying high-temperature liquid directly onto the outside of the disc requires a large amount of liquid, and similarly, it misses some areas on the interceptor blades, wasting liquid and yielding unsatisfactory cleaning results.

[0081] In this patent, a heating section 21 is provided in the intercepting fan blade. The heating section 21 is used to house the heating element and / or to introduce the heating medium. Compared with the traditional separator, since the heating medium and / or heating element are located in the heating section 21 of the intercepting fan blade, the heating of the intercepting fan blade 2a is uniform and all-round. As can be seen from the phenomenon that oil droplets condense under low temperature, as long as the intercepting fan blade maintains a certain heating temperature, the oil droplets will not condense and adhere to the intercepting fan blade when passing through it. This means that there is basically no grease adhering to the surface of the intercepting fan blade. Therefore, there is no need to clean it, achieving true cleaning-free operation.

[0082] Furthermore, since the heating medium and heating element of this patent do not come into direct contact with the external environment, there is less heat loss when heating the intercepting fan blades, which can quickly heat the intercepting fan blades and is more energy-efficient.

[0083] In actual processing, the intercepting fan blade can be formed by extrusion molding. Because the intercepting fan blade is a long strip blade, and its thickness is set to be relatively thin in order to achieve rotation.

[0084] Furthermore, the material for the interceptor blades can be metal or plastic, such as aluminum, aluminum alloy, copper, stainless steel, or plastic materials like PVC and PC. Using these materials not only reduces the weight of the interceptor blades, making them thinner and lighter, but also allows for rapid heat transfer from materials like aluminum, aluminum alloy, copper, and stainless steel, ensuring that heat is quickly transferred to the interceptor blades once the heating element is heated, resulting in a rapid increase in their temperature.

[0085] Please refer to the following: Figure 2 , Figures 4 to 6 In this embodiment, since the intercepting fan blade has at least one bent portion on its cross-section along the radial direction of the fixed disk, and the intercepting fan blade is fixed to the fixed disk, the intercepting fan blade may include a fan blade body 212 (mainly used for separating oil fumes) and a root portion 213 located at one end of the fan blade body 212. The heating element extends from the root portion 213 to the fan blade body 212, and the root portion 213 is fixed to the fixed disk. Specifically, the intercepting fan blade may be V-shaped, W-shaped, polygonal, N-shaped, or Z-shaped. Taking a V-shaped intercepting fan blade as an example, the cross-sections of the root portion 213 and the fan blade body 212 are both V-shaped. The root portion 213 is connected to the fixed disk to realize the communication between the heating element and the first cavity on the fixed disk, so as to realize the wire connection of the heating element after the heating medium is introduced.

[0086] In addition, by connecting the root 213 to the fixed plate to achieve communication between the heating part and the first cavity, the external heating medium (such as steam or high-temperature liquid) can stay in the first cavity 211 and enter each intercepting fan blade equipped with the heating part evenly through the rotation of the separation plate, so that the heating medium heats the blade evenly from the inside, achieving the effect that the solid-liquid mixture does not condense on the intercepting fan blade.

[0087] As described above, taking the heating element as the heating channel located on the intercepting fan blade as an example, the intercepting fan blade 2a is a flat, elongated blade, and there are a large number of intercepting fan blades on the separation plate. Since the heating channel is located on these intercepting fan blades, if the heating medium (e.g., steam) is not introduced through the first cavity of the fixed plate, but instead directly aligned with the intercepting fan blades on the separation plate via an external steam pipe, and assuming 100 intercepting fan blades each have the heating channel, then the steam pipe would need to branch into 100 small pipes directly connected to each intercepting fan blade. This pipe connection is very complex and increases the weight of the entire separation plate. Furthermore, since the intercepting fan blade needs to rotate at high speed when intercepting the oil fume airflow, the pipe would rotate under the influence of the intercepting fan blade to ensure that the pipe is aligned with the heating channel of the intercepting fan blade. This design is highly impractical. Furthermore, even if the pipe does not rotate under the drive of the intercepting fan blade, since the pipe needs to deliver the heating medium to the corresponding intercepting fan blade, if the intercepting fan blade is rotating at high speed, the pipe cannot be aligned with the heating channel of the intercepting fan blade. Therefore, even if the intercepting fan blade needs to be heated, it must be done after the intercepting fan blade has stopped rotating. After the separation plate has been used, the solid-liquid mixture has solidified on the intercepting fan blade. If heating is carried out at this time, if a large amount of solid-liquid mixture has accumulated, more heating medium needs to be introduced to heat it.

[0088] Therefore, in this patent, the heating medium is delivered to the first cavity 211 of the fixed plate. The heating medium is delivered to the heating channel of the intercepting fan blade by connecting the first cavity 211 and the heating part on the root 213. Since the intercepting fan blade rotates at high speed under the drive of the fixed plate, the heating medium can still be introduced to heat the intercepting fan blade even during the high-speed operation of the intercepting fan blade. This does not affect the oil fume separation of the intercepting fan blade, and at the same time, it can prevent grease from adhering to the intercepting fan blade.

[0089] Please refer to the following: Figures 2 to 5 as well as Figure 7Furthermore, the connection between the root portion 213 and the fixed plate can be achieved through welding, riveting, bolt and screw connection, pin connection, elastic deformation connection, locking connection, or insertion, etc. The present invention preferably employs an insertion method. To achieve a fixed connection between the root portion 213 and the fixed plate, the fixed plate is provided with a circumferential groove 216 communicating with the first cavity. The circumferential groove 216 is arranged along the circumference of the fixed plate and opens outward. The root portion 213 is inserted into the circumferential groove 216 to achieve communication between the heating part located on the root portion 213 and the first cavity. Specifically, the fixed plate includes an upper fixed plate portion 214 and a lower fixed plate portion 215. Both the upper fixed plate portion 214 and the lower fixed plate portion 215 are hollow inside, and the upper fixed plate portion 214 and the lower fixed plate portion 215 are fitted together to form the first cavity. That is, the first cavity is formed by the fitted connection of the hollow portion of the upper fixed plate portion 214 and the hollow portion of the lower fixed plate. Specifically, the upper fixing plate portion 214 is a circular disc-shaped structure with a hollow interior. Similarly, the lower fixing plate portion 215 is also a circular disc-shaped structure with a hollow interior. The upper fixing plate portion 214 and the lower fixing plate portion 215 have the same diameter, and the connection between the upper fixing plate portion 214 and the lower fixing plate portion 215 can be secured by screws to ensure a tight connection.

[0090] Since both the upper fixed plate portion 214 and the lower fixed plate portion 215 are hollow disc-shaped structures, several studs with screw holes can be provided in the hollow portion of either the upper fixed plate portion 214 or the lower fixed plate portion 215. Corresponding screw holes can then be provided in either the lower fixed plate portion 214 or the upper fixed plate portion 215. This allows screws to pass through the screw holes, achieving a fixed connection between the upper fixed plate portion 214 and the lower fixed plate portion 215. Preferably, multiple studs 214a can be provided in the hollow portion of the upper fixed plate portion 214, arranged circumferentially along the center of the upper fixed plate portion 214. Screw holes 215a are provided in the lower fixed plate portion 215 corresponding to these studs 214a. That is, the screw holes 215a in the lower fixed plate portion 215 are also arranged circumferentially along the center of the lower fixed plate. This effectively ensures the tightness of the connection between the upper fixed plate portion 214 and the lower fixed plate portion 215 at all positions.

[0091] In this embodiment, the circumferential groove 216 is formed at the connection between the upper fixed plate portion 214 and the lower fixed plate portion 215. That is, when the root portion 213 is connected to the fixed plate, it is inserted into the first cavity through the circumferential groove 216, thereby realizing the connection between the root portion 213 and the fixed plate and the communication between the heating part and the first cavity. Specifically, the lower part of the upper fixed plate portion 214 is provided with a first groove 214b, and the upper part of the lower fixed plate portion 215 is provided with a second groove 215b. When the upper fixed plate portion 214 and the lower fixed plate portion 215 are connected, the first groove 214b and the second groove 215b cooperate to form the circumferential groove 216. More specifically, the first groove 214b is opened at the lower periphery of the upper fixed plate portion 214, and the second groove 215b is opened at the upper periphery of the lower fixed plate portion 215, and both the first groove 214b and the second groove 215b are serrated grooves.

[0092] Preferably, the lower periphery of the upper fixed disk portion 214 is provided with a plurality of serrated protrusions 214c distributed circumferentially along the circumference of the upper fixed disk portion 214 to form the first groove 214b. Similarly, the upper periphery of the lower fixed disk portion 215 is also provided with a plurality of serrated protrusions 215c distributed circumferentially along the circumference of the lower fixed disk portion 215 to form the second groove 215b. When the upper fixed disk portion 214 and the lower fixed disk portion 215 are connected, each serrated protrusion 214c located on the upper fixed disk portion 214 abuts against each serrated protrusion 215c located on the lower fixed disk portion 215, thereby connecting the first groove 214b and the second groove 215b to form the circumferential groove 216.

[0093] Specifically, for the upper fixed plate portion 214, a first groove is formed between two adjacent serrated protrusions 214c, and the first groove 214b includes the plurality of first grooves. Similarly, for the lower fixed plate portion 215, a second groove is formed between two adjacent serrated protrusions 215c, and the second groove 215b includes the plurality of second grooves. Preferably, both the first and second grooves are semi-circular grooves. When the upper fixed plate portion 214 and the lower fixed plate portion 215 are connected, the first and second grooves mate to form a complete circular groove, so that the root 213 of each intercepting blade is inserted into each circular groove and enters the first cavity.

[0094] By using serrated protrusions to form a first groove 214b and a second groove 215b on the upper fixed plate portion 214 and the lower fixed plate portion 215, each intercepting fan blade can be directly positioned and fixed at the corresponding position on the fixed plate, thereby naturally forming a gap between adjacent intercepting fan blades for the passage of oil fumes.

[0095] It can be understood that the gap can be uniform or unequal. In this embodiment, it is preferred that the gap between two adjacent interceptor blades is equal.

[0096] As described above, the intercepting blade can be V-shaped. Therefore, the intercepting blade includes a first sub-blade 20a and a second sub-blade 20b. One side surface of the second sub-blade is connected to one side surface of the first sub-blade so that the cross-section of the intercepting blade is V-shaped. Specifically, the first and second sub-blades are identical elongated rectangular plates, and the first and second sub-blades are of equal length and width. Both the first and second sub-blades include the aforementioned blade body 212 and root 213.

[0097] Furthermore, a first slot 201 and a second slot 202 are respectively provided on the first sub-blade and the second sub-blade. When the root 213 of the intercepting blade is connected to the fixed plate, the first slot 201 is engaged in the upper fixed plate portion 214, and the second slot 202 is engaged in the lower fixed plate portion 215.

[0098] Specifically, the root 213 of the first sub-leaf is referred to as the first root, and the root 213 of the second sub-leaf is referred to as the second root.

[0099] Both the first slot 201 and the second slot 202 are strip-shaped slots. The length of the first slot 201 extends in the same direction as the width of the first sub-blade, and the length of the second slot 202 extends in the same direction as the width of the second sub-blade. The first slot 201 extends from the edge of the first sub-blade to the intersection of the first sub-blade and the second sub-blade, and the second slot 202 extends from the edge of the second sub-blade to the intersection of the second sub-blade and the first sub-blade. The first slot 201 divides the first sub-blade into a first root 213 and a first blade body 212. Similarly, the second slot 202 divides the second sub-blade into a second root 213 and a second blade body 212. More specifically, the length ratio of the root 213 to the blade body 212 is approximately 1:10-1:20, that is, the length of the root 213 is much smaller than the length of the blade body 212. In this way, not only can the root 213 be completely inserted into the circumferential groove 216, but the blade body 212 can also be ensured to have sufficient length to achieve oil fume separation.

[0100] Furthermore, when the first root portion 213 and the second root portion 213 are inserted into the circumferential groove 216, the first slot 201 is precisely engaged with the upper fixing plate portion 214, and the second slot 202 is precisely engaged with the lower fixing plate portion 215. Thus, one inner wall surface of the first slot 201 abuts against the inner wall surface of the hollow portion of the upper fixing plate portion 214, and the other opposing inner wall surface of the first slot 201 abuts against the outer circumferential surface of the upper fixing plate portion 214, thereby ensuring that the first root portion 213 is completely located within the hollow portion of the upper fixing plate portion 214. Similarly, one inner wall surface of the second slot 202 abuts against the inner wall surface of the hollow portion of the lower fixing plate portion 215, and the other opposing inner wall surface of the second slot 202 abuts against the outer circumferential surface of the lower fixing plate portion 215, thereby ensuring that the second root portion 213 is also completely located within the hollow portion.

[0101] Using the above method, the first slot 201 and the second slot 202 can abut against the upper fixed plate portion 214 and the lower fixed plate portion 215, thereby achieving a fixed connection between the first sub-blade and the second sub-blade and the fixed plate, and further achieving a connection between the root 213 and the fixed plate. Moreover, this connection method is very reliable. As long as the upper fixed plate portion 214 and the lower fixed plate portion 215 are tightly connected, even during high-speed rotation, the first slot 201 and the second slot 202 of the first sub-blade and the second sub-blade cannot detach from the upper fixed plate portion 214 and the lower fixed plate portion 215.

[0102] Furthermore, since there are a large number of intercepting blades using the above method, they need to be installed one by one when installing them onto the fixed plate, and it is also necessary to ensure that there is a gap between adjacent intercepting blades. Therefore, by using the first slot 201 and the second slot 202 to directly engage with the upper fixed plate part 214 and the lower fixed plate part 215 respectively, and by matching a serrated protrusion 214c of the upper fixed plate part 214 and a corresponding serrated protrusion 214c of the lower fixed plate part 215, the installation of the intercepting blades to the fixed plate can be completed quickly, while also ensuring that there is a gap between adjacent blades.

[0103] The oil-resistant separator provided in this embodiment connects the first cavity on the fixed disc and the heating part on the intercepting fan blade to form a channel for introducing the heating medium, so that the intercepting fan blade can be heated to a higher temperature to prevent oil fumes from condensing on the separator.

[0104] Furthermore, by providing a serrated first groove 214b and a second groove 215b in the upper fixed plate portion 214 and the lower fixed plate portion 215, and by providing a first slot 201 and a second slot 202 in the intercepting fan blade, it is possible not only to facilitate the quick positioning and installation of the intercepting fan blade with the upper fixed plate portion 214 and the lower fixed plate portion 215, but also to ensure the reliability and tightness of the connection between the intercepting fan blade and the upper fixed plate portion 214 and the lower fixed plate portion 215.

[0105] Example 2

[0106] The oil-blocking separator provided in this embodiment two can be applied to a range hood. The oil-blocking separator of this embodiment two covers the features of the oil-blocking separator of this embodiment one, and discloses the specific shape of the intercepting fan blade and the setting position of the heating part based on embodiment one.

[0107] Please see Figure 2 , Figure 3 as well as Figure 8 In this embodiment, the cross-section of the intercepting blade 2a has one or more bends. Specifically, since the intercepting blade is elongated, the cross-section is a cross-section perpendicular to the length of the intercepting blade 1. The cross-section can be any shape with bends, such as V-shaped, W-shaped, polygonal, N-shaped, or Z-shaped. For example, when the cross-section is V-shaped, it has a single bend; when the cross-section is W-shaped, it has three bends; when the cross-section is polygonal, such as parallelogram, rhombus, square, rectangle, pentagon, hexagon, octagon, etc., it has at least four bends; when the cross-section is Z-shaped, it has two bends, and similarly, when the cross-section is N-shaped, it also has two bends.

[0108] The following example illustrates the use of a V-shaped cross-section for the intercepting fan blade 2a. The concave side of the V-shaped cross-section is the inner side of the intercepting fan blade, and the opposite side is the outer side. When the intercepting fan blade is installed on a fixed plate, the inner side of one of the two adjacent intercepting fan blades and the outer side of the other form a gap for the passage of cooking fumes.

[0109] Furthermore, the intercepting blade 2a includes a first sub-blade 20a and a second sub-blade 20b that intersects and connects with the first sub-blade 20a. Specifically, the intercepting blade 2a is a centrally symmetrical intercepting blade 2a, and the structure of the first sub-blade 20a is the same as that of the second sub-blade 20b. By symmetrically arranging the first sub-blade 20a and the second sub-blade 20b, the first sub-blade 20a and the second sub-blade 20b form an intercepting blade 2a with a V-shaped cross-section. When the separation disc rotates, the oil fumes pass through the gap 2c between the V-shaped intercepting blades 2a, causing the solid-liquid mixture in the oil fumes to undergo more collisions, thereby prolonging the time the solid-liquid mixture passes through the separation disc, and thus subjecting the solid-liquid mixture to centrifugal force for a longer period, resulting in more of the solid-liquid mixture being separated from the separation disc.

[0110] In this embodiment, the first sub-blade 20a and / or the second sub-blade 20b are provided with the heating section.

[0111] As an optional implementation, the first sub-blade 20a is provided with the heating part, which can be provided inside the first sub-blade 20a or on the first sub-blade 20a.

[0112] As another optional implementation, the second sub-blade 20b is provided with the heating part, which can be provided inside the second sub-blade 20b or on the second sub-blade 20b.

[0113] As another alternative implementation, the heating element is provided on the first sub-blade 20a and the second sub-blade 20b respectively.

[0114] In another optional implementation, the connection between the second sub-blade and the first sub-blade forms an intersection, and the heating element can be disposed at the intersection 24, that is, the heating element can be disposed at the connection between the first sub-blade and the second sub-blade. Specifically, since the cross-sectional shape of the intercepting blade is V-shaped, and the first and second sub-blades are elongated, a long side of the first sub-blade connects with a long side of the second sub-blade to form an intersection 24, and the heating element is disposed at the heating element. It can be understood that the heating element can be disposed within the intersection or on the intersection.

[0115] Preferably, this embodiment is described using the example of the heating part 21 being disposed within the intersecting part 24.

[0116] In this embodiment, a first protrusion structure 25a is provided on the intersecting portion 24. Specifically, the first protrusion structure 25a is disposed on the inner side 26 of the intercepting fan blade, and the first protrusion structure 25a is a strip-shaped protrusion disposed on the intersecting portion 24. By using the design of providing the first protrusion structure 25a on the inner side 26 of the intercepting fan blade, when the solid-liquid mixture in the oil fume passes through the intercepting fan blade 2a, it will collide with the first protrusion structure 25a, thereby causing the solid-liquid mixture to be stuck below the first protrusion structure 25a. The solid-liquid mixture cannot continue to rise and separate from the oil fume, so that the solid-liquid mixture is constantly subjected to centrifugal force and leaves the separation disk in the radial direction of the separation disk, thereby improving the separation rate of the solid-liquid mixture in the oil fume.

[0117] Furthermore, a second protruding structure 25b is provided at the intersection. This second protruding structure 25b is located on the outer side of the intercepting fan blade and is a strip-shaped protrusion at the intersection. Similarly, by providing a second protruding structure 25b that cooperates with the first protruding structure on the outer side of the intercepting fan blade, when the solid-liquid mixture in the oil fume passes through the intercepting fan blade 2a, it will also collide with the second protruding structure 25b. This causes the solid-liquid mixture to be stuck below the second protruding structure 25b, preventing it from rising further and separating from the oil fume. The solid-liquid mixture is continuously subjected to centrifugal force and leaves the separation disc along the radial direction of the separation disc, thereby improving the separation rate of the solid-liquid mixture in the oil fume.

[0118] In this embodiment, since the first protrusion structure 25a is disposed at the intersection and located on the inner side of the intercepting blade, and a second protrusion structure 25b corresponding to the first protrusion structure 25a is disposed at the intersection located on the outer side of the intercepting blade, the first protrusion structure 25a and the second protrusion structure 25b can be integrally formed in actual processing.

[0119] Furthermore, since the intercepting fan blade is a thin sheet structure, directly placing a heating element (i.e., creating an opening) on ​​the intercepting fan blade might result in insufficient strength of the blade itself, potentially leading to breakage during high-speed rotation. Therefore, this embodiment uses a method where the heating element is positioned between the first protruding structure 25a and the second protruding structure 25b (e.g., ...). Figure 8 As shown in a), by using the first protrusion structure 25a and the second protrusion structure 25b to increase the thickness at the intersection, the structural strength of the intercepting blade can be ensured without increasing the thickness of other parts of the intercepting blade.

[0120] As another optional implementation, a heating portion 21 is formed between the first protruding structure 25a and the intersecting portion 24, such that the first protruding structure 25a surrounds the outside of the heating portion (e.g., Figure 8 (as shown in b in the text).

[0121] As another optional implementation, when the heating element 21 is provided on the intercepting fan blade 2a, the heating element 21 may be located on the first protruding structure 25a. For example, as Figure 8 As shown in c, a heating element 21 may be provided inside the first protruding structure 25a.

[0122] As another alternative implementation, when the heating element 21 is provided on the intercepting fan blade 2a, the heating element 21 can be provided on the edge of the first protruding structure 25a (e.g., Figure 8 (as shown in d).

[0123] As another alternative implementation, the first protrusion 25a may also be polygonal, and a heating portion 21 is formed between the first protrusion 25a and the intersecting portion 24 (e.g., Figure 8 (as shown in e).

[0124] Similarly, a heating element may be provided between the second protruding structure 25b and the intersecting portion, or the heating element may be provided inside the second protruding structure 25b, etc. No further illustrations or descriptions are given here.

[0125] It is understandable that, perpendicular to the length direction of the intercepting fan blade 2a, the cross-section of the heating section 21 can be one or a combination of several of the following: circular, elliptical, fan-shaped, or polygonal. That is, Figure 8 The illustration only shows that the heating element can be a regular shape such as a circle, ellipse, triangle, fan, or square. In other embodiments, the heating element can also be other irregular hole shapes, such as a combination of a circle and a triangle or a combination of a circle and a square, etc. This embodiment does not make specific limitations.

[0126] In this embodiment, the above-mentioned method is preferred. Figure 8 In the scheme of a, the first protrusion structure is a semi-circular protrusion, and the second protrusion structure 25b is also a semi-circular protrusion. The first protrusion structure and the second protrusion structure 25b cooperate to form a circular protrusion that is set at the intersection. The heating part is a circular hole opened in the circular protrusion.

[0127] In this embodiment, the intercepting fan blade 2a includes a fixed end and a free end arranged opposite to each other. The fixed end is fixed to the root 213, and the heating part 21 extends from the fixed end to the free end.

[0128] The fixed end is defined as the end connected to the root 213, while the free end is defined as the end that extends radially outward along the intercepting fan blade and can separate the oil fumes.

[0129] The first protruding structure 25a extends along the length of the first sub-blade 20a. The centerline of the heating part 21 along the length of the first sub-blade 20a is parallel to the intersection line of the intersecting part 24, that is, the direction of the heating part is in the same direction as the length of the first sub-blade. This parallel arrangement not only facilitates the processing of the heating part but also makes the distances from the heating part to the first and second sub-blades approximately equal, thereby ensuring that the temperatures of the first and second sub-blades are roughly equal when heat is transferred to them.

[0130] Please see Figure 9 In this embodiment, the first protrusion structure 25a and the first sub-blade 20a are of equal or unequal length, and the heating part 21 is a heating channel in the form of a through hole or a heating cavity in the form of a blind hole, wherein heating elements can be disposed in either the through hole or the blind hole.

[0131] like Figure 9 As shown in Figure a, in an optional embodiment, the first protrusion structure 25a and the second protrusion structure 25b are of the same length as the first sub-blade 20a, that is, the first protrusion structure 25a extends from the fixed end of the first sub-blade 20a to the free end of the first sub-blade 20a. In this case, the heating part 21 can be a through hole, which can penetrate both ends of the first protrusion structure 25a in the length direction. So when steam is introduced into the heating part 21, the steam can not only raise the temperature of the first sub-blade 20a and the second sub-blade 20b, but also, when the separation plate is applied to the range hood, the separation plate can be located in the oil receiving tray of the range hood. Therefore, when the steam exits from the heating part, it can also enter the oil receiving tray, which is set on the outer periphery of the intercepting fan blade to receive the solid-liquid mixture thrown out by the intercepting fan blade, thereby further raising the temperature of the oil receiving tray. This can also reduce the possibility of the solid-liquid mixture adhering to the oil receiving tray, further reducing the need to clean the oil receiving tray and achieving the purpose of preventing oil sticking.

[0132] like Figure 9 As shown in b, as another optional implementation, the first protrusion 25a and the second protrusion 25b are also the same length as the first sub-blade 20a. However, in this case, the heating part 21 can be a blind hole, and it is known that the opening end of the heating part 21 should be the end that passes through the first protrusion 25a and corresponds to the fixed end of the first sub-blade 20a. When the heating part 21 is a blind hole, the steam entering the heating part 21 can only raise the temperature of the first sub-blade 20a and the second sub-blade 20b. In this case, the steam cannot be delivered to the oil receiving pan, so it is impossible to heat the oil receiving pan, and it can only heat the intercepting fan blade. Thus, after a period of use, the oil receiving pan still needs to be cleaned.

[0133] As another optional implementation, the first protrusion structure 25a and the second protrusion structure 25b extend from the fixed end of the first sub-blade 20a to a position near the middle or near the free end of the first sub-blade 20a. That is, the first protrusion structure 25a and the second protrusion structure 25b are not of equal length to the first sub-blade 20a. In this case, the heating part 21 can be a through hole, that is, the heating part 21 also penetrates both ends of the first protrusion structure 25a and the second protrusion structure 25b along their own length direction. Since the heating part 21 is a through hole, when steam is introduced into the heating part 21, the steam can also raise the temperature of the first sub-blade 20a and the second sub-blade 20b, and can also be transported to the oil receiving pan, thereby raising the temperature of the oil receiving pan and preventing grease and / or solid mixtures from adhering to the oil receiving pan.

[0134] In another optional implementation, the first protrusion 25a and the second protrusion 25b extend from the fixed end of the first sub-blade 20a to a position near the middle or near the free end of the first sub-blade 20a. That is, the first protrusion 25a and the second protrusion 25b are not of equal length to the first sub-blade 20a. In this case, the heating part 21 can also be a blind hole. It can be understood that the opening end of the heating part 21 should be the end that passes through the first protrusion 25a and the second protrusion 25b corresponding to the fixed end of the first sub-blade 20a. When the heating part 21 is a blind hole, the steam entering the heating part 21 can only raise the temperature of the first sub-blade 20a and the second sub-blade 20b. In this case, the steam cannot be delivered to the oil receiving pan, and therefore, heating of the oil receiving pan cannot be achieved.

[0135] Therefore, when the heating part 21 is a through hole, the introduction of steam into the heating part 21 can not only raise the temperature of the first sub-blade 20a and the second sub-blade 20b, preventing oil droplets from adhering to the first sub-blade 20a and the second sub-blade 20b, but also raise the temperature of the oil receiving tray, thereby preventing oil droplets from adhering to the oil receiving tray and achieving a true anti-oil sticking design.

[0136] Furthermore, the use of first protrusion structures 25a and second protrusion structures 25b of different lengths also has different beneficial effects. When this separating disc is applied to a range hood, and when the heating part 21 is a through hole, taking steam as the heating medium as an example, the longer first protrusion structure 25a and second protrusion structure 25b can heat a longer area of ​​the intercepting fan blade 2a, thereby melting more of the solid-liquid mixture on the intercepting fan blade 2a. The shorter first protrusion structure 25a can only heat a local part of the intercepting fan blade.

[0137] Therefore, in this embodiment, the first protrusion structure 25a and the second protrusion structure 25b are preferably designed to be the same length as the first sub-blade and the heating part is a through hole, that is... Figure 8 The method in part a.

[0138] Please refer to it again. Figure 2 as well as Figure 3 In this embodiment, when the intercepting blade 2a is a V-shaped intercepting blade, the first included angle formed by the intersection of the second sub-blade 20b and the first intercepting blade 20a is 30 degrees to 150 degrees. Specifically, the included angle formed by the two intercepting blades 2a cannot be too large or too small. If the included angle is too small, each intercepting blade 2a will become pointed and long, which will significantly increase the cost of manufacturing the intercepting blade 2a, and the excessive weight will reduce the rotation speed of the separation disc. If the included angle is too large, the intercepting blade 2a will be approximately I-shaped, and the solid-liquid mixture will be more easily discharged directly, thereby affecting the oil fume separation effect of the intercepting blade.

[0139] Furthermore, since the intercepting fan blade 2a has an axisymmetric structure, the first sub-blade 20a and the second sub-blade 20b of the intercepting fan blade are symmetrical about the angle bisector of the intercepting fan blade. Specifically, when the intercepting fan blade is applied to the fume separation disc and installed on the fixed plate, the angle bisectors of each intercepting fan blade coincide. The purpose of limiting the coincidence of the angle bisectors of each intercepting fan blade and the purpose of the intercepting fan blade having an axisymmetric structure is to ensure that when the fume separation disc rotates, the fume airflow only enters or exits through the gaps in the fume separation disc, and does not exit directly from below and / or above the fume separation disc, thereby ensuring that the fume airflow can be intercepted and separated within the gaps.

[0140] It is understood that the degree of overlap of the angle bisectors of each intercepting fan blade depends on the actual installation process and the machining accuracy of the intercepting fan blades. Precise overlap is often not possible, but approximate overlap is sufficient to achieve the purpose of this invention. That is, to achieve direct exhaust of oil-free airflow above and / or below the oil fume separation disc.

[0141] Please see Figure 10 In this embodiment, the intercepting fan blades 2a are arranged in a single layer or multiple layers on the fixed disk 2b. When the intercepting fan blades 2a are arranged in multiple layers on the fixed disk 2b, there is a gap between adjacent layers of intercepting fan blades 2a, and the orientation of adjacent layers of intercepting fan blades 2a is the same or opposite. Specifically, by using multiple layers of intercepting fan blades 2a, the purified oil fumes can be purified a second time, thereby improving the separation rate and making the emitted gas environmentally friendly and harmless.

[0142] like Figure 10 As shown, taking a double-layered interceptor fan blade configuration on a fixed plate as an example, there should be a gap between the two layers of interceptor fan blades to prevent them from contacting each other during rotation and affecting rotation. Simultaneously, the two layers of interceptor fan blades should face the same direction, such as... Figure 10 As shown in section a. It is understandable that the two layers of intercepting blades can also be oriented in opposite directions, such as... Figure 10 As shown in part b of the document.

[0143] The oil-resistant separation disc provided in this embodiment 2, by setting a first protrusion structure and a second protrusion structure 25b on the intersection of the V-shaped intercepting fan blades, extends the separation path of the solid-liquid mixture as it passes through the separation disc, thus extending the separation time of the solid-liquid mixture and increasing the time it is subjected to centrifugal force, thereby effectively improving the separation rate.

[0144] Furthermore, by providing a heating section between the first protrusion structure and the second protrusion structure 25b, and by providing a heating medium within the heating section, the temperature of the intercepting fan blade can be increased, thereby bringing the temperature of the intercepting fan blade close to the temperature of the oil fume. This ensures that the solid-liquid mixture in the oil fume will not condense on the intercepting fan blade, achieving the effect of preventing oil sticking.

[0145] Example 3

[0146] Combination Figure 2 and Figure 11 As shown, Embodiment 3 of the present invention provides an anti-sticking oil separator. The difference between the anti-sticking oil separator of Embodiment 3 and the anti-sticking oil separator of Embodiment 2 is that:

[0147] The example given is that a first protruding structure is set on the inner side of the intercepting blade, while the outer side of the intercepting blade is not set for the time being.

[0148] The first protrusion structure is provided at the non-intersecting portion of the first sub-blade 20a and / or the non-intersecting portion of the second sub-blade 20b. The heating part is located between the non-intersecting portion of the first sub-blade and the first protrusion structure and / or between the non-intersecting portion of the second sub-blade and the first protrusion structure. In this second embodiment, the heating part is still used as the heating channel for description.

[0149] As a first alternative implementation (such as Figure 11 As shown in part a), the heating part 21 is disposed between the first sub-blade 20a and the first protrusion structure 25a.

[0150] As a second alternative implementation (such as Figure 11 (As shown in part b), the heating part 21 is located between the second sub-blade 20b and the first protrusion structure 25a.

[0151] As a third alternative implementation method (such as...) Figure 11 (As shown in part c), the heating element 21 is respectively disposed between the first sub-blade 20a, the second sub-blade 20b, and the first protrusion structure 25a.

[0152] Furthermore, in the third embodiment, a first protrusion structure 25a is provided on both the first sub-blade 20a and the second sub-blade 20b. The separation rate of the intercepting blade 2a is better than that of the first and second embodiments. Since the third embodiment has two protrusion structures, there are also two heating parts 21, which makes the heating of the intercepting blade 2a more uniform.

[0153] Preferably, in the third embodiment, the protrusions provided on the first sub-blade 20a and the second sub-blade 20b should have a certain gap 2c; otherwise, if the gap 2c formed between the intercepting blades 2a is too small, the ventilation volume will be reduced.

[0154] Similarly, the way in which the heating element is disposed between the second protrusion structure 25b and the first sub-blade and / or the second sub-blade is similar to the way it is disposed between the first protrusion structure and the first protrusion structure, and will not be described again here.

[0155] It should be noted that in this embodiment, the structure of the heating part, the first sub-blade, the second sub-blade, and the first protrusion structure is the same as that in Embodiment 2, and therefore will not be described again.

[0156] The oil-blocking separator provided in this embodiment 3, by setting a heating element on the first sub-blade and / or the second sub-blade and setting a heating medium in the heating element, can make the temperature of the intercepting fan blade rise more evenly, thereby achieving a better oil-blocking effect.

[0157] Example 4

[0158] Combination Figure 2 and Figure 12 As shown, Embodiment 4 of the present invention provides an anti-sticking oil separator. The difference between the anti-sticking oil separator of Embodiment 3 and the anti-sticking oil separator of Embodiment 2 is that:

[0159] Similarly, this explanation will only take the example of setting a first protrusion structure on the inner side of the intercepting blade, and not setting a second protrusion structure on the outer side of the intercepting blade.

[0160] Not only is a first protruding structure 25a provided on the intersecting portion 24, and a heating element is disposed between the first protruding structure and the intersecting portion, but also first protruding structures are provided on the first sub-blade and / or the second sub-blade, and heating elements are provided between the first sub-blade and the first protruding structure and / or between the second sub-blade and the first protruding structure. In this embodiment, the heating element is described as a heating channel. The arrangement of the first protruding structure and the heating element can be as follows:

[0161] As a first alternative implementation (such as Figure 12As shown in a), not only is the intersection part provided with a first protrusion structure, but the position where the first sub-blade does not intersect with the second sub-blade is also provided with a first protrusion structure. A heating part is provided between the intersection part and the first protrusion structure. At the same time, a heating part is also provided between the non-intersecting position of the first sub-blade and the first protrusion structure.

[0162] As a second alternative implementation (such as Figure 12 As shown in b), not only is the intersection part provided with a first protrusion structure, but the position where the second sub-blade does not intersect with the first sub-blade is also provided with a first protrusion structure. A heating part is provided between the intersection part and the first protrusion structure. At the same time, a heating part is also provided between the non-intersecting position of the second sub-blade and the first protrusion structure.

[0163] As a third alternative implementation method (such as...) Figure 12 As shown in c), not only is there a first protrusion structure at the intersection, but there is also a first protrusion structure at the position where the first sub-blade does not intersect with the second sub-blade, and there is also a first protrusion structure at the position where the second sub-blade does not intersect with the first sub-blade. Then, a heating part is provided between the intersection and the first protrusion structure. At the same time, a heating part is also provided between the non-intersecting part of the first sub-blade and the first protrusion structure, and a heating part is also provided between the non-intersecting part of the second sub-blade and the first protrusion structure.

[0164] Of course, it is understandable that although a first protrusion structure is provided on the first sub-blade and / or the second sub-blade, it does not mean that a heating element needs to be provided between the first protrusion structure and the first sub-blade and / or the second sub-blade. That is, the number of heating elements can be adjusted according to the actual situation. For example, since the intercepting blade itself is a flat strip, its volume is small, so there is no need to provide multiple heating elements, only one or two heating elements are needed.

[0165] Furthermore, in the third embodiment, three heating sections 21 are simultaneously provided at the intersection section 24, the first sub-blade 20a, and the second sub-blade 20b. The separation rate of the intercepting blade 2a is better than that of the first and second embodiments. Since the third embodiment has three protruding structures, there are corresponding three heating sections 21, which makes the heating of the intercepting blade 2a the most uniform.

[0166] Similarly, the way in which the heating element is disposed between the second protrusion structure 25b and the first sub-blade and / or the second sub-blade is similar to the way it is disposed between the first protrusion structure and the first protrusion structure, and will not be described again here.

[0167] The oil-blocking separator provided in this embodiment four has heating elements provided at the intersection and on the first and / or second sub-blades, and a heating medium is provided in the heating elements, which can make the temperature of the intercepting fan blades rise more evenly, thereby achieving a better oil-blocking effect.

[0168] Example 5

[0169] Combination Figure 2 and Figure 13 As shown, Embodiment 5 of the present invention provides an anti-sticking oil separator. The difference between the anti-sticking oil separator of Embodiment 5 and the anti-sticking oil separator of Embodiment 2 is that:

[0170] The heating part 21 is not located in the intersecting part 24 but is located inside the intercepting fan blade 2a, and the first protruding structure 25a is not provided on the intercepting fan blade 2a. In this embodiment, the heating part 21 is used as the heating channel for explanation.

[0171] In this embodiment, the heating element 21 is disposed within the intercepting fan blade 2a. Specifically, the placement of the heating element within the intercepting fan blade can be roughly categorized into the following situations:

[0172] As a first alternative implementation (such as Figure 13 As shown in part a), the heating section is provided in the intersection, the interior of the first sub-blade where it does not intersect with the second sub-blade, and the interior of the second sub-blade where it does not intersect with the first sub-blade.

[0173] As a second alternative implementation (such as Figure 13 As shown in part b), the heating element is not provided in the intersection, but is provided inside the intersection of the first sub-blade and the second sub-blade, and inside the intersection of the second sub-blade and the first sub-blade.

[0174] As a third alternative implementation method (such as...) Figure 13 As shown in part c), the heating section is provided in the intersecting part and in the part where the first sub-blade does not intersect with the second sub-blade.

[0175] As a fourth alternative implementation method (such as...) Figure 13 As shown in part d), the heating section is provided in the intersecting part and in the part where the second sub-blade does not intersect with the first sub-blade.

[0176] As a fifth alternative implementation method (such as...) Figure 13 As shown in part e), the heating element 21 is only provided inside the first sub-blade 20a.

[0177] As a sixth alternative implementation method (such as...) Figure 13 (as shown in part f), the heating element 21 is only located inside the second sub-blade 20b.

[0178] As a seventh alternative implementation method (such as...) Figure 13 (As shown in part g), the heating part 21 is only provided in the intersecting part 24.

[0179] Among them, the above seven implementation methods can be appropriately thickened on the basis of the conventional intercepting fan blade 2a to place solid heating media such as heating plates, heating wires, and heating tubes, or to allow sufficient passage space for hot water, hot steam, etc., so that the heating medium can bring enough heat to heat the intercepting fan blade 2a.

[0180] It is understandable that the number and position of the heating elements 21 have a certain impact on the heating speed and uniformity of the intercepting fan blade 2a. In the seventh embodiment, three heating elements 21 are spaced apart on the intercepting fan blade 2a, which can quickly and evenly heat the intercepting fan blade 2a, thereby making the anti-oil-sticking effect of the intercepting fan blade better.

[0181] The oil-blocking separator provided in this embodiment five has a heating element inside the V-shaped intercepting fan blade, and a heating medium is provided in the heating element to raise the temperature of the intercepting fan blade. When the temperature of the intercepting fan blade is close to the temperature of the oil fume, the solid-liquid mixture in the oil fume will not condense on the intercepting fan blade, thereby achieving the effect of preventing oil sticking.

[0182] Example 6

[0183] Combination Figure 1 , Figure 2 and Figure 14 As shown, Embodiment Six of the present invention provides an anti-sticking oil separator. The difference between the anti-sticking oil separator of Embodiment Six and the anti-sticking oil separator of Embodiment Five is that:

[0184] The heating element is located inside the intercepting fan blade, and at the same time, the intercepting fan blade 2a is provided with a first protrusion structure 25a and / or a second protrusion structure 25b.

[0185] Specifically, taking the first protruding structure 25a as an example, this first protruding structure 25a can extend the path of the solid-liquid mixture in the oil fume through the separation disc. When the solid-liquid mixture in the oil fume passes through the intercepting fan blade 2a area of ​​the separation disc, it will collide with the first protruding structure 25a, and the solid-liquid mixture will be stuck below the first protruding structure 25a. Therefore, the solid-liquid mixture cannot continue to rise and separate from the oil fume. When the solid-liquid mixture is stuck by the first protruding structure 25a, it is constantly subjected to centrifugal force, so the solid-liquid mixture will leave the separation disc radially in the direction of centrifugal force, thereby improving the separation rate of the solid-liquid mixture in the oil fume.

[0186] Please see Figure 14Furthermore, the first protruding structure 25a can be disposed at different positions on the intercepting blade 2a to achieve the highest separation rate. Specifically, the example of disposing the first protruding structure 25a at the intersection 24 will be explained. The effect of disposing the first protruding structure 25a at the intersection 24 is that it reduces the decrease in gap 2c caused by disposing the first protruding structure 25a on the intercepting blade 2a. In other words, the overall ventilation volume of disposing the first protruding structure 25a at the intersection 24 is greater than that of disposing the first protruding structure 25a on the first sub-blade 20a or the second sub-blade 20b.

[0187] Similarly, the method and position of setting the second protrusion structure 25b are the same as those of setting the first protrusion structure, and will not be repeated here.

[0188] The anti-oil-sticking separation disc provided in Embodiment Six achieves its effect by setting a heating element inside the V-shaped intercepting fan blade and placing a heating medium within the heating element to raise the temperature of the intercepting fan blade. It also does not occupy any space, maintaining a large overall ventilation volume while still achieving the anti-oil-sticking effect. Furthermore, the first protruding structure on the intercepting fan blade intercepts and traps the solid-liquid mixture during the separation process, thus separating most of the solid-liquid mixture from the oil fumes and effectively improving the separation rate.

[0189] Example 7

[0190] Combination Figure 1 , Figures 15 to 17 As shown, Embodiment 7 of the present invention provides a range hood, including a drive device and the anti-oil-sticking separation disc of Embodiment 2 above.

[0191] In this embodiment, Figures 15 to 17 The diagram shows the heating section 21 as a heating channel. The drive unit 1 of the range hood can be a motor, which includes a motor body 10 and a rotating shaft 11 fixedly connected to the motor body. The rotating shaft is fixedly connected to the fixed disk 2b, and a hollow cavity 11a is provided on the rotating shaft. The hollow cavity 11a communicates with the heating section 21 and is used to input the heating medium into the heating section 21. Specifically, the drive unit 1 is used to drive the separating disk, causing the separating disk to rotate at high speed. The rotating shaft of the motor is the part that specifically drives the fixed disk 2b, which in turn drives the intercepting fan blade 2a to rotate. The hollow part of the motor rotating shaft is the hollow cavity 11a through which the heating medium passes.

[0192] Furthermore, since the rotating shaft 11 is fixedly connected to the fixed disk 2b, and the fixed disk 2b is a hollow disk-shaped structure, in order to ensure the strength and tightness of the connection structure between the rotating shaft 11 and the fixed disk 2b, the fixed disk is provided with a protrusion 214d. The protrusion 214d has a shaft hole corresponding to the rotating shaft, and the rotating shaft extends into the shaft hole and is fixed to the fixed disk. Specifically, the protrusion 214d can be provided in the upper fixed disk portion 214, and the protrusion 214d is preferably located at the center of the upper fixed disk portion 214, so that the fixed disk can maintain left and right balance when it rotates under the drive of the rotating shaft.

[0193] Furthermore, multiple through holes 214e are provided on the outer periphery of the protrusion 214d, which communicate with the hollow cavity 11a of the rotating shaft 11 and the heating part 21. Specifically, the hollow cavity 11a, the multiple through holes 214e, the first cavity 211, and the heating part 21 are interconnected to form a complete channel through which the heating medium passes. The hollow cavity 11a is a vertical through hole opened on the rotating shaft, and its upper end is connected to an external heating medium or power source. In order to enable the hollow cavity 11a to communicate with the multiple through holes 214e, an output hole 11b communicating with the hollow cavity can be provided on the rotating shaft 11. The heating medium or wire is output to the first cavity through the output hole 11b communicating with the through hole 214e.

[0194] In this embodiment, the heating medium is transported from the motor shaft to the intercepting fan blades. Compared with the method of directly transporting the heating medium to the separation plate through the steam pipe or hot water pipe, the structure is simpler and can achieve internal heating, which is highly efficient and does not affect the interception and separation of oil fume airflow by the intercepting fan blades.

[0195] As an optional implementation, if the heating medium is liquid or gas, the heating medium is introduced from the outside through the hollow cavity 11a, passing sequentially through the output hole 11b, the through hole 214e, the first cavity 211, and the heating part 21, thereby achieving the purpose of heating the heating part 21. Taking steam as the heating medium and the heating part 21 as the through hole as an example, steam enters the range hood through the hollow cavity 11a of the motor shaft, and enters the first cavity 211 through the hollow cavity below the shaft. At this time, the steam will first accumulate in the first cavity 211. When the steam almost fills the first cavity 211, the steam will enter the heating part. Due to the rotation of the separator, the steam escapes from the intercepting fan blade under the action of centrifugal force and enters the oil receiving tray. During the process of steam entering the heating part 21, the steam will conduct heat to the intercepting fan blade 2a, causing the intercepting fan blade 2a to heat up. Because the solid-liquid mixture and the intercepting fan blade 2a are at similar temperatures, the solid-liquid mixture in the fumes will not condense on the intercepting fan blade 2a. Even if a small portion of the solid-liquid mixture wants to adhere to the intercepting fan blade 2a, the centrifugal force of the rotating separation disc will cause the mixture to flow over the intercepting fan blade 2a and be thrown out of the intercepting fan blade 2a, thereby achieving the effect of preventing oil adhesion and thus achieving automatic cleaning of the intercepting fan blade and eliminating the need for manual cleaning by the user.

[0196] Furthermore, the oil receiving tray is a tray set on the outer periphery of the intercepting fan blade to catch the solid-liquid mixture thrown out by the separation tray. During use, the oil receiving tray is covered with the solid-liquid mixture. However, when the heating medium is liquid or gas and the heating part is a heating channel, the heating medium can be thrown into the oil receiving tray after passing through the heating channel. At this time, the heating medium also conducts its own heat to the oil receiving tray at the same time, so that the solid-liquid mixture on the oil receiving tray will not condense on the oil receiving tray, thus achieving the effect of not needing to clean the oil receiving tray.

[0197] It is known that the steam temperature can be between 40℃ and 70℃. If it exceeds 70℃, it may cause the motor to overheat, affecting its operation and thus its service life. Therefore, it is preferable that the steam temperature does not exceed the motor's operating temperature, such as 40℃, 45℃, 50℃, 55℃, 60℃, 65℃, or 70℃.

[0198] As another optional implementation, if the heating section contains a heating element, the heating element is stored inside the heating section 21. A power supply line providing power to the heating element passes through the hollow cavity 11, the output hole 11b, the through hole 214e, the first cavity 211, and the heating section 21, connecting to the heating medium to supply power to the solid heating medium. Its specific principle is the same as the principle of introducing steam described above, and therefore will not be repeated.

[0199] In this embodiment, the range hood also includes a motor mounting bracket 3, an oil receiving tray 4, and an air guide cover 5. The motor mounting bracket 3 is a support for fixing the motor, and the oil receiving tray 4 is used to receive the solid-liquid mixture separated by the separation tray.

[0200] Furthermore, the range hood consists of, from top to bottom, a motor, a motor mounting bracket 3, a separation plate, and an oil receiving tray 4. The motor mounting bracket 3 and the separation plate are respectively fixed to the upper and lower ends of the motor.

[0201] In this embodiment, the air guide cover 5 is connected to the motor. Specifically, the end of the rotating shaft is screwed to the air guide cover 5, so that the air guide cover 5 can cover the central area of ​​the separation disc. Since the air guide cover 5 has an arc surface design, it can reduce the wind resistance in the central area of ​​the separation disc, thereby allowing the oil fumes to pass through the air guide cover 5 more smoothly into the separation disc for separation.

[0202] In practical use, a heating button can be installed on the range hood. When using the range hood, the heating button can be pressed first, which will introduce heating medium into the hollow cavity 11a or heat the heating medium in the heating section 21, raising the temperature of the intercepting fan blade 2a to 40℃-70℃. At this temperature, the solid-liquid mixture in the cooking fumes will not condense on the intercepting fan blade 2a. Not only is the intercepting fan blade 2a heated, but the heating medium flowing out from the heating section 21 will also heat the oil receiving tray 4, preventing the solid-liquid mixture from condensing on the oil receiving tray 4. After the intercepting fan blade 2a and the oil receiving tray 4 are heated, cooking can proceed. In this way, the solid-liquid mixture in the cooking fumes will not adhere to the intercepting fan blade and the oil receiving tray 4, thus truly achieving an anti-sticking effect.

[0203] The range hood provided in Embodiment 7 of this invention, by combining a hollow cavity, a first cavity, and a heating element to form a channel for the placement of a heating medium or heating element, allows the heating medium entering through the hollow cavity to heat the intercepting fan blades, thereby reducing the adhesion of grease mixtures to the intercepting fan blades and truly achieving an anti-grease-sticking effect. Users of this range hood do not need to manually clean the separation disc, thus improving the user experience.

[0204] Example 8

[0205] Embodiment 8 of the present invention provides a range hood, including a drive device, a motor mounting bracket, an oil receiving tray, an air guide cover, and the separation tray of Embodiment 3 above.

[0206] The drive device, motor mounting bracket, oil receiving tray, and air guide cover mentioned in Embodiment 8 of the present invention have the same structure as the drive device, motor mounting bracket, oil receiving tray, and air guide cover in Embodiment 8 above, and will not be described again here.

[0207] Example 9

[0208] Embodiment 9 of the present invention provides a range hood, including a drive device, a motor mounting bracket, an oil receiving tray, an air guide cover, and the separation tray of Embodiment 4 above.

[0209] The drive device, motor mounting bracket, oil receiving tray, and air guide cover mentioned in Embodiment Nine of the present invention have the same structure as the drive device, motor mounting bracket, oil receiving tray, and air guide cover in Embodiment Eight above, and will not be described again here.

[0210] Example 10

[0211] Embodiment 10 of the present invention provides a range hood, including a drive device, a motor mounting bracket, an oil receiving tray 4, an air guide cover, and the separation tray of Embodiment 5 above.

[0212] The drive device, motor mounting bracket, oil receiving tray, and air guide cover mentioned in Embodiment 10 of the present invention have the same structure as the drive device, motor mounting bracket, oil receiving tray, and air guide cover in Embodiment 9 above, and will not be described again here.

[0213] Example 11

[0214] Embodiment 11 of the present invention provides a range hood, including a drive device, a motor mounting bracket, an oil receiving tray, an air guide cover, and the separation tray of Embodiment 6 above.

[0215] The drive device, motor mounting bracket, oil tray, and air guide cover mentioned in Embodiment 11 of the present invention have the same structure as the drive device, motor mounting bracket, oil tray, and air guide cover in Embodiment 10 above, and will not be described again here.

[0216] The novel oil-resistant separator and range hood disclosed in the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the principles and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A range hood, characterized in that, The range hood includes a drive unit and a separation plate; The separation disk includes: Fixed plate; Multiple elongated intercepting fan blades are arranged radially and fixed to the fixed plate, and a gap is formed between any two adjacent intercepting fan blades so that the oil fume airflow can pass through. The intercepting fan blade has at least one bent portion on its cross-section along the radial direction of the fixed plate, and all or part of the intercepting fan blade is provided with one or more heating parts for heating the intercepting fan blade; The intercepting blade includes a first sub-blade and a second sub-blade. One side of the first sub-blade is connected at an angle to one side of the second sub-blade. The concave side of the cross-section of the intercepting blade is the inner side of the intercepting blade, and the other side corresponding to the concave side is the outer side of the intercepting blade. One side surface of the second sub-blade is connected to one side surface of the first sub-blade to form an intersection. The intersection is provided with a first protrusion structure and a second protrusion structure. The first protrusion structure is located on the inner side of the intercepting blade, and the second protrusion structure is located on the outer side of the intercepting blade. The second protrusion structure is correspondingly arranged with the first protrusion structure, and the second protrusion structure and the first protrusion structure are integrally formed. The heating part is a through hole or channel, and the heating part is used to introduce a heating medium. The heating part is disposed in the first protrusion structure and the second protrusion structure. The first protrusion structure extends along the length extension direction of the first sub-blade. The center line of the heating part along the length extension direction of the first sub-blade is parallel to the intersection line of the intersecting part. The drive device is connected to the fixed disk and is used to drive the fixed disk to rotate, thereby driving the several intercepting fan blades to rotate. The driving device is a motor, which includes a motor body and a rotating shaft fixedly connected to the motor body. The rotating shaft is fixedly connected to the fixed disk, and a hollow cavity is provided on the rotating shaft. The hollow cavity is connected to the heating part.

2. The range hood according to claim 1, characterized in that, The fixed plate is provided with a first cavity for introducing the heating medium, and the first cavity is connected to each of the intercepting fan blades provided with the heating part.

3. The range hood according to claim 1, characterized in that, The fixed plate is provided with a first cavity for filling the heating medium, and the first cavity is connected to each of the intercepting fan blades provided with the heating part.

4. The range hood according to any one of claims 1 to 3, characterized in that, The heating element extends along the length of the intercepting fan blade, and the heating element may be the same length as or different length from the intercepting fan blade.

5. The range hood according to any one of claims 1 to 3, characterized in that, The intercepting fan blade includes a fan blade body and a root portion located at one end of the fan blade body. The heating portion extends from the root portion to the fan blade body, and the root portion is fixed to the fixing plate.

6. The range hood according to claim 5, characterized in that, The fixed plate is provided with a circumferential groove that communicates with the first cavity. The circumferential groove is arranged along the circumference of the fixed plate and opens outward. The root is inserted into the circumferential groove so that the heating part provided at the root communicates with the first cavity.

7. The range hood according to claim 6, characterized in that, The fixing plate includes an upper fixing plate portion and a lower fixing plate portion. The upper fixing plate portion and the lower fixing plate portion are hollow inside. The upper fixing plate portion and the lower fixing plate portion are connected and form the first cavity inside. The circumferential groove is formed at the connection between the upper fixing plate portion and the lower fixing plate portion.

8. The range hood according to claim 7, characterized in that, The lower part of the upper fixed plate portion is provided with a first groove, and the upper part of the lower fixed plate portion is provided with a second groove. When the upper fixed plate portion and the lower fixed plate portion are connected, the second groove and the first groove cooperate to form the circumferential groove. Both the first groove and the second groove are sawtooth grooves.

9. The range hood according to claim 7, characterized in that, One side surface of the second sub-blade is connected to one side surface of the first sub-blade so that the cross-section of the intercepting blade is a V-shaped cross-section; The first sub-blade and the second sub-blade include the blade body and the root. The first sub-blade and the second sub-blade are respectively provided with a first slot and a second slot. When the root of the first sub-blade and the second sub-blade is connected to the fixing plate, the first slot is engaged with the upper fixing plate portion, and the second slot is engaged with the lower fixing plate portion.

10. The range hood according to claim 9, characterized in that, The length extension direction of the first slot is in the same direction as the width direction of the first sub-blade, and the length extension direction of the second slot is in the same direction as the width direction of the second sub-blade. The first slot extends from the edge of the first sub-blade to the intersection of the first sub-blade and the second sub-blade, and the second slot extends from the edge of the second sub-blade to the intersection of the second sub-blade and the first sub-blade. The first slot separates the first sub-blade into the root and the blade body, and the second slot separates the second sub-blade into the root and the blade body.

11. The range hood according to any one of claims 1 to 3, characterized in that, The cross-section of the intercepting blade can be any one of V-shape, W-shape, Z-shape, or polygon.

12. The range hood according to claim 11, characterized in that, One side surface of the second sub-blade is connected to one side surface of the first sub-blade so that the cross-section of the intercepting blade is a V-shaped cross-section, and the first sub-blade and / or the second sub-blade are provided with the heating part.

13. The range hood according to claim 12, characterized in that, The heating element is located at the intersection.

14. The range hood according to claim 13, characterized in that, The concave side of the V-shaped cross-section is the inner side of the intercepting blade, and the opposite side is the outer side of the intercepting blade. The heating element is located between the first protruding structure and the second protruding structure.

15. The range hood according to claim 14, characterized in that, The length extension direction of the first protrusion structure and the second protrusion structure is in the same direction as the extension direction of the heating part, and the outer boundary of the cross-section of the first protrusion structure and the second protrusion structure along their length direction is arc-shaped, wavy, zigzag, or a combination thereof.

16. The range hood according to claim 12, characterized in that, The angle bisectors of each of the intercepting blades coincide, and the first sub-blade and the second sub-blade of the intercepting blade are symmetrical about the angle bisector of the intercepting blade.

17. The range hood according to any one of claims 1 to 3, characterized in that, The cross-sectional shape of the heating element along its length is one or any combination of a circle, an ellipse, a fan shape, or a polygon.

18. The range hood according to any one of claims 1 to 3, characterized in that, The intercepting fan blades of the separation disk are distributed in one or more layers, and each layer of the intercepting fan blades includes multiple intercepting fan blades.

19. The range hood according to any one of claims 1 to 3, characterized in that, The intercepting fan blades are manufactured using an extrusion molding process, and the material of the intercepting fan blades is either metal or plastic.

20. The range hood according to any one of claims 1 to 3, characterized in that, The fixed plate is provided with a protrusion, and the protrusion is provided with a shaft hole corresponding to the rotating shaft, and the rotating shaft extends into the shaft hole; The outer periphery of the protruding post is provided with multiple through holes, which are connected to the hollow cavity of the rotating shaft and the heating part.

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