Range hood front end filtering device and island platform all-in-one machine

Abstract

The utility model provides a range hood front end filtering device and an island platform all-in-one machine. The front-end filtering device of the range hood comprises a stator, a rotor and a plurality of blades. The rotor is installed on the stator and can rotate relative to the stator. The rotor is provided with a smoke inlet channel. The blades are arranged in the smoke inlet channel and installed on the rotor in the radial direction of the smoke inlet channel, and the multiple blades are arranged in the circumferential direction of the smoke inlet channel. The blades can open the smoke inlet channel when the rotor rotates, the blades can close the smoke inlet channel when the rotor stops rotating, oil and smoke separation can be achieved at the front end of the flue, and the smoke inlet amount can be increased.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking stoves, and more specifically, to a front-end filtering device for a range hood and an island counter integrated machine. Background Technique

[0002] An island counter integrated machine is a modern kitchen cooking device that combines multiple functions such as a gas stove and a range hood. It sucks in cooking fumes from below, which is different from traditional top-suction or side-suction range hoods. The advantage of this design is that it can more effectively capture and remove cooking fumes, while saving space above the kitchen, making the kitchen look more spacious and tidy.

[0003] However, in existing island counter integrated machines, an air inlet is generally provided on the countertop, and a filter screen is provided at the air inlet for pre-filtering. The setting of the filter screen will affect the suction of the fan, and there is a problem of insufficient filtering of the filter screen. After using for a period of time, a large amount of oil droplets and particulate matter will deposit on the filter screen, the fan, etc. to form oil scale, which greatly affects the air volume of the fan and reduces the smoking effect. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a front-end filtering device for a range hood and an island counter integrated machine, which can achieve oil fume separation at the front end of the flue and also improve the air intake volume.

[0005] The embodiments of the utility model are implemented as follows:

[0006] In a first aspect, the utility model provides a front-end filtering device for a range hood, including a stator, a rotor, and a plurality of blades;

[0007] The rotor is installed on the stator and can rotate relative to the stator;

[0008] The rotor is provided with a smoke inlet channel;

[0009] The blades are arranged in the smoke inlet channel and are installed on the rotor along the radial direction of the smoke inlet channel, and a plurality of blades are arranged circumferentially along the smoke inlet channel;

[0010] When the rotor rotates, the blades can open the smoke inlet channel, and when the rotor stops rotating, the blades can close the smoke inlet channel.

[0011] In an optional embodiment, a plurality of blade mounting members are provided on the inner peripheral edge of the smoke inlet channel;

[0012] The plurality of blade mounting members are arranged at the same height and are spaced apart;

[0013] All the blades are provided with engaging portions;

[0014] The blades are installed on the blade mounting members through the engaging portions, and the engaging portions can rotate relative to the blade mounting members.

[0015] In an alternative embodiment, one of the engaging portion and the blade mounting member is provided with a rotating shaft, and the other is provided with a shaft hole, and the rotating shaft is inserted into the shaft hole.

[0016] In an alternative embodiment, a guiding surface is provided at one end of the blade mounting member opposite to the engaging portion, and a guiding portion is provided on the engaging portion corresponding to the guiding surface;

[0017] When the rotor rotates, the blade can move radially outward under the action of centrifugal force, and during the movement, the cooperation between the guiding portion and the guiding surface can cause the blade to rotate along its own preset axis to the open position.

[0018] In an alternative embodiment, in the direction in which the blade rotates from the closed position to the open position, the guiding surface is spirally arranged in a direction away from the engaging portion.

[0019] In an alternative embodiment, a limiting surface is provided at the end of the guiding surface, and when the blade is in the open position, the guiding portion abuts against the limiting surface.

[0020] In an alternative embodiment, the blade mounting member is provided with a plurality of guiding surfaces, all the guiding surfaces are uniformly arranged in the circumferential direction, the end of the engaging portion is provided with a plurality of guiding portions, and the plurality of guiding portions correspond to the plurality of guiding surfaces in position; and / or,

[0021] The guiding portion includes a mating surface and an abutting surface. In the direction in which the blade rotates from the closed position to the open position, the mating surface is spirally arranged in a direction away from the engaging portion, the abutting surface is provided on one side of the guiding portion, the mating surface abuts against the guiding surface, the abutting surface corresponds to the limiting surface, and the two abut when the blade is in the open position; and / or,

[0022] When the blade is in the open position, the range of the angle between the blade and the axis is 45° to 75°.

[0023] In an alternative embodiment, the blade is fan-shaped, the engaging portion is arranged along the radial direction of the blade and is offset from the angular bisector of the blade, so that the blade can rotate from the open position to the closed position under the action of gravity after the rotor stops rotating; and / or,

[0024] The front-end filtering device of the range hood further includes a central connector. A connecting portion is provided on one side of the blade away from the engaging portion. All the blades are connected to the central connector through the connecting portion, and the connecting portion can rotate relative to the central connector along the preset axis of the blade and can move radially relative to the central connector.

[0025] In an alternative embodiment, the front-end filtering device of the range hood further includes an upper bearing, a lower bearing and a top cover;

[0026] The stator is provided with a stepped groove, the lower bearing is installed in the stepped groove, the rotor is installed above the lower bearing, the upper bearing is installed above the rotor, the top cover is installed above the upper bearing and is fixedly connected to the stator. The side wall of the stepped groove is provided with magnets in the area corresponding to the stator.

[0027] Second, for convenience, the present application also provides an island counter integrated machine, which includes an island counter body, a fan, and the front-end filtering device of the range hood in any one of the above optional embodiments.

[0028] A smoke collection cavity is arranged in the island counter body, and a smoke inlet communicating with the smoke collection cavity is arranged on the tabletop of the island counter body.

[0029] The fan is installed in the smoke collection cavity, and the stator is fixedly installed at the smoke inlet.

[0030] The beneficial effects of the front-end filtering device of the range hood and the island counter integrated machine provided by the embodiments of the present utility model are as follows:

[0031] In the present application, by arranging the front-end filtering device of the range hood at the smoke inlet of the island counter integrated machine, after the island counter integrated machine is turned on, the rotor starts to rotate. The rotor drives the blades to rotate, so that the blades open the smoke inlet channel. And during the rotation of the blades with the rotor, axial suction will be generated, thereby enhancing the smoking effect. At the same time, during the rotation of the blades with the rotor, when the oil fume collides with the rotating blades, the oil droplets and mist droplets in the oil fume gather into large particles after collision and adhere to the surface of the blades, while the flue gas will flow backward, thus separating the oil and the flue gas. After the island counter integrated machine is turned off, the rotor stops rotating, and the blades close the smoke inlet channel, thereby preventing foreign objects from falling in and avoiding the reverse flow of air into the kitchen. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a schematic structural diagram of the blade of the island counter integrated machine provided by the embodiment of the present utility model in the closed position;

[0034] Figure 2 It is a schematic structural diagram of the blade of the island counter integrated machine provided by the present utility model in the open position;

[0035] Figure 3 It is a schematic cross-sectional structural diagram of the blade of the island counter integrated machine provided by the embodiment of the present utility model in the open position;

[0036] Figure 4Schematic cross-sectional view of the blade of the front-end filtering device of the range hood provided by the embodiment of the present utility model in the open position;

[0037] Figure 5 Exploded structure diagram of the front-end filtering device of the range hood provided by the embodiment of the present utility model;

[0038] Figure 6 Schematic diagram of the blade structure of the front-end filtering device of the range hood provided by the embodiment of the present utility model;

[0039] Figure 7 Partial structure diagram of the rotor of the front-end filtering device of the range hood provided by the embodiment of the present utility model;

[0040] Figure 8 For Figure 4 Enlarged view at A in;

[0041] Figure 9 Corresponding to Figure 8 At the position, enlarged partial view of the blade at the position;

[0042] Figure 10 Connection diagram of the stator and the central connecting member of the rotor of the front-end filtering device of the range hood provided by the embodiment of the present utility model;

[0043] Figure 11 Schematic structure diagram of the blade of the front-end filtering device of the range hood provided by Embodiment 2 of the present utility model in the closed position;

[0044] Figure 12 Schematic structure diagram of the blade of the front-end filtering device of the range hood provided by Embodiment 2 of the present utility model in the open position;

[0045] Figure 13 Schematic diagram of the blade structure of the front-end filtering device of the range hood provided by Embodiment 2 of the present utility model;

[0046] Figure 14 Another schematic diagram of the blade structure of the front-end filtering device of the range hood provided by Embodiment 2 of the present utility model;

[0047] Figure 15 Schematic structure diagram of the blade of the front-end filtering device of the range hood provided by Embodiment 3 of the present utility model in the closed position;

[0048] Figure 16 Schematic structure diagram of the blade of the front-end filtering device of the range hood provided by Embodiment 3 of the present utility model in the open position.

[0049] Icons: 100 - Front-end filtering device of range hood; 110 - Stator; 111 - Support part; 113 - Mounting boss; 130 - Rotor; 131 - Smoke inlet channel; 150 - Blade; 151 - Smoke inlet gap; 153 - Fitting part; 155 - Rotating shaft; 157 - Guide part; 159 - Fitting surface; 161 - Contact surface; 163 - Connecting shaft; 164 - Blade body; 165 - Windward wing; 170 - Blade mounting part; 171 - Shaft hole; 173 - Guide surface; 175 - Limiting surface; 177 - Guide groove; 190 - Central connecting part; 191 - Insertion hole; 211 - Upper bearing; 213 - Lower bearing; 215 - Top cover; 216 - Step groove; 230 - Magnetic part; 300 - Island countertop integrated machine; 310 - Island countertop body; 311 - Smoke collection cavity; 313 - Smoke inlet; 330 - Fan. Detailed implementation mode

[0050] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0052] It should be noted that: Similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0053] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the product of this utility model is normally placed. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0054] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0055] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0056] Embodiment 1

[0057] Please refer to Figures 1 to 16 , this embodiment provides an integrated island counter 300. The integrated island counter 300 includes an island counter body 310, a fan 330, and an oil fume front-end filtering device 100. A smoke collecting cavity 311 is provided inside the island counter body 310, and a smoke inlet 313 communicating with the smoke collecting cavity 311 is provided on the tabletop of the island counter body 310. The fan 330 is installed in the smoke collecting cavity 311, and the oil fume front-end filtering device 100 is installed at the smoke inlet 313. The oil fume front-end filtering device 100 can suck the oil fume downward into the smoke collecting cavity 311, and then can be transported to the outside through the fan 330. The main function of the front-end filtering device of the oil fume machine is to separate the oil fume at the smoke inlet 313 at the front end of the smoke collecting cavity 311, and can improve the suction force and smoke gathering effect of the smoke inlet 313.

[0058] Of course, in some embodiments of the present application, the integrated island counter 300 further includes a stove head, and the stove head is installed on the tabletop. The oil fume generated during cooking by the stove head will be sucked downward under the combined action of the fan 330 and the oil fume front-end filtering device 100.

[0059] Please refer to Figures 1 to 10, in this embodiment, the front-end filtering device 100 of the range hood includes a stator 110, a rotor 130, and a plurality of blades 150. The rotor 130 is installed on the stator 110 and can rotate relative to the stator 110. The rotor 130 is provided with a smoke inlet channel 131. The blades 150 are arranged in the smoke inlet channel 131 and are installed on the rotor 130 along the radial direction of the smoke inlet channel 131, and the plurality of blades 150 are arranged along the circumferential direction of the smoke inlet channel 131. When the rotor 130 rotates, the blades 150 can rotate along their preset axes to the open position, so that a smoke inlet gap 151 is formed between any two adjacent blades 150. After the rotor 130 stops rotating, the blades 150 can rotate along their preset axes to the closed position, so that all the blades 150 cooperate to close the smoke inlet channel 131.

[0060] In this embodiment, by arranging the front-end filtering device 100 at the smoke inlet 313 of the island counter integrated machine 300, after the island counter integrated machine 300 is powered on, the rotor 130 starts to rotate, and the blades 150 can rotate along their preset axes to the open position, and a smoke inlet gap 151 is formed between any two adjacent blades 150. The rotor 130 drives the blades 150 to rotate to generate an axial suction force, thereby enhancing the smoking effect. At the same time, during the rotation of the blades 150, the oil fume collides with the rotating blades 150, and the oil droplets and mist droplets in the oil fume gather into large particles after collision and adhere to the surface of the blades 150, while the smoke will flow backward through the smoke inlet gap 151, thereby separating the oil and the smoke. After the island counter integrated machine 300 is turned off, the blades 150 can rotate along the preset axis and be in the closed position to close the smoke inlet channel 131, thereby preventing foreign objects from falling in, preventing odor from mixing, and avoiding the reverse flow of air into the kitchen.

[0061] It should be noted that after the blades 150 rotate along the preset axis to the open position, the stator 110, the rotor 130, and all the blades 150 form an axial flow fan, which generates a suction force from top to bottom during rotation, thereby sucking the smoke into the smoke collecting cavity 311. Secondly, an oil channel is arranged in the smoke collecting cavity 311. The oil path of the oil channel is communicated with the oil collecting tank. The oil droplets and mist droplets adsorbed on the blades 150 can fall into the oil channel under the action of gravity and can be transmitted to the oil collecting tank through the oil path. Just clean the oil liquid in the oil collecting tank regularly.

[0062] It should also be noted that the preset axis is set on the blades 150 and is the axis for the blades 150 to rotate relative to the stator 110 by themselves, and is set according to the rotation requirements and rotation modes of the blades 150.

[0063] Please refer to Figures 1 to 10, in this embodiment, the stator 110 is generally in the shape of an inner ring. The rotor 130 is also in the shape of a circular ring, and the rotor 130 is installed inside the stator 110. Among them, one of the stator 110 and the rotor 130 is provided with a magnet, and the other is provided with a coil. In this embodiment, the magnet is provided on the inner peripheral edge of the stator 110, and the coil is provided on the outer peripheral edge of the rotor 130. Of course, in some other embodiments of the present application, the positions of the coil and the magnet can be interchanged.

[0064] Furthermore, a plurality of blade mounting members 170 are provided on the inner peripheral edge of the smoke inlet passage 131. The plurality of blade mounting members 170 are provided at the same height and are evenly spaced. All the blades 150 are provided with a mating portion 153. The blade 150 is mounted on the blade mounting member 170 through the mating portion 153, and the mating portion 153 can rotate relative to the blade mounting member 170. Such a setting enables the blade 150 to better achieve a rotational connection with the rotor 130. And the axis of the mating portion 153 forms a preset axis of the blade 150, so that the blade 150 can rotate between an open position and a closed position.

[0065] It should be noted that the blade mounting member 170 can be mounted on the inner side wall of the rotor 130 by welding. Of course, it can also be mounted by means of fasteners, such as being fixed to the rotor 130 by screws. Of course, it can also be connected to the rotor 130 by an integral molding method.

[0066] Please refer to Figures 1 to 10 , specifically, one of the mating portion 153 and the blade mounting member 170 is provided with a rotating shaft 155, and the other is provided with a shaft hole 171. The rotating shaft 155 is inserted into the shaft hole 171. The rotational connection can be conveniently achieved through the insertion of the rotating shaft 155 and the shaft hole 171.

[0067] In this embodiment, the rotating shaft 155 is provided on the mating portion 153, and the shaft hole 171 is provided on the blade 150 connecting member. The rotating shaft 155 and the shaft hole 171 are both arranged along the radial direction. Of course, in some other embodiments of the present application, the positions of the rotating shaft 155 and the shaft hole 171 can also be swapped, that is, the rotating shaft 155 is provided at the end of the blade 150 connecting member, and the shaft hole 171 is provided at the end of the mating portion 153.

[0068] It should also be noted that, in this embodiment, the setting height of the blade 150 connecting member is related to the size of the blade 150. In this embodiment, the blade 150 connecting member is provided at a position above the middle in the height direction of the rotor 130. In this way, when the blade 150 is in the open position, a part of the blade 150 is exposed outside the top of the rotor 130. In this way, during the rotation of the blade 150, better turbulence with the external air can be achieved, so as to achieve better smoking and smoke gathering effects.

[0069] Please refer toFigures 1 to 10 Furthermore, a guiding surface 173 is provided at one end of the blade mounting member 170 opposite to the mating portion 153. A guiding portion 157 is provided on the mating portion 153 corresponding to the guiding surface 173, and the guiding portion 157 abuts against the guiding surface 173. When the rotor 130 rotates, the blade 150 can move radially outward under the action of centrifugal force. During the movement, the cooperation between the guiding portion 157 and the guiding surface 173 can cause the blade 150 to rotate along its own preset axis to the open position.

[0070] In this embodiment, by providing the guiding surface 173 and the guiding portion 157, the rotor 130 drives the blade 150 to rotate, causing the blade 150 to generate an outward radial centrifugal force. Then, through the cooperation between the guiding surface 173 and the guiding portion 157, part of the radial centrifugal force is converted into a torque for driving the blade 150 to rotate along the preset axis. Thus, the blade 150 can be flipped and opened without a driving member, with a simple structure and no power consumption required. Most importantly, during the rotation of the rotor 130, the blade 150 will automatically open, so that the opening of the blade 150 is linked to the rotation of the rotor 130.

[0071] Specifically, in the direction of the blade 150 rotating from the closed position to the open position, the guiding surface 173 is spirally arranged in a direction away from the mating portion 153. Such a spiral direction of the guiding surface 173 is set so that the blade 150 can rotate from the closed position to the open position by means of centrifugal force.

[0072] It should be noted that the principle of the spiral guiding surface 173 converting part of the radial centrifugal force into a torque for driving the rotation of the blade 150 shaft 155 is as follows: The centrifugal force is radially outward. In terms of force decomposition, the radially outward centrifugal force will be decomposed into two components. One is the tangential component along the spiral guiding surface 173, which will cause rotation, and the other is the component along the normal direction of the spiral surface, which will overcome the friction force and cause the guiding portion 157 to slide along the spiral guiding surface 173. When the tangential component is greater than the friction force, the rotational movement starts. When the guiding portion 157 moves along the spiral guiding surface 173, it generates a moment, which causes relative rotation between the mating portion 153 and the blade 150 connecting member.

[0073] It should also be noted that the blade 150 has two processes from the closed position to the open position. Initially, the blade 150 is closed. As the rotational speed of the rotor 130 increases, the centrifugal force of the blade 150 increases, and the centrifugal force causes the blade 150 to rotate to form an angle of attack. Subsequently, the windward surface of the blade 150 is also subject to an air flow thrust, and under the action of the centrifugal force and the air flow thrust, it continues to rotate until it reaches the open position. To achieve the above effects, the rotational direction of the blade 150 needs to be set opposite to that of the rotor 130 to ensure that the direction of the air flow thrust received by the windward surface of the blade 150 matches the rotational direction of the blade 150.

[0074] Please refer to Figures 1 to 10 , in this embodiment, a limiting surface 175 is provided at the end of the guiding surface 173. When the blade 150 is in the open position, the guiding portion 157 abuts against the limiting surface 175.

[0075] The function of setting the limiting surface 175 in this embodiment is that after the blade 150 rotates to the preset open position, it can be maintained at the preset open position and sweep the wind at a better angle of attack.

[0076] In the embodiment, at least two guiding surfaces 173 are provided at the end of the blade mounting member 170, and all the guiding surfaces 173 are uniformly arranged in the circumferential direction. A plurality of guiding portions 157 are provided at the end of the engaging portion 153, and the plurality of guiding portions 157 correspond to the positions of the plurality of guiding surfaces 173.

[0077] By setting at least two guiding surfaces 173 and two guiding portions 157, the number of abutting positions between the blade 150 and the engaging portion 153 can be increased, and the blade 150 can rotate more smoothly along the preset axis.

[0078] Please refer to Figures 1 to 10 , in this embodiment, two guiding grooves 177 are provided at the end of the blade mounting member 170. The two guiding grooves 177 are provided on the outer periphery of the shaft hole 171 and each corresponds to a 180° circular angle. The projection of the guiding groove 177 is a right triangle, and its inclined surface is a helically arranged guiding surface 173, and the surface corresponding to the right angle side is the limiting surface 175. The limiting surface 175 and the guiding surface 173 enclose a tooth groove. Among the two guiding grooves 177, one guiding groove 177 is obtained by rotating the other guiding groove 177 by 180 degrees. The guiding surface 173 is helically arranged counterclockwise from the end of the blade 150 connecting member towards the direction away from the engaging portion 153.

[0079] Of course, in some other embodiments of the present application, the shape of the guiding groove 177 is also a V-shaped spiral groove, and the number can also be set as required, such as three, four or more. For example, when there are three guiding grooves 177, each guiding groove 177 can correspond to a circular angle of 120°, or each guiding groove 177 corresponds to a circular angle of 60°, and the adjacent two are spaced by a circular angle of 60°.

[0080] Please refer to Figures 1 to 10 , in this embodiment, two guiding parts 157 are arranged at the end of the matching part 153. The two guiding parts 157 are arranged on the outer peripheral edge of the rotating shaft 155 and each corresponds to a central angle of 180°. The projection of the guiding part 157 is a right triangle, which is complementary to the shape of the guiding groove 177. The guiding part 157 includes a matching surface 159 and an abutting surface 161. The abutting surface 161 is the inclined surface of the right triangle, while the matching surface 159 is the end surface of the right triangle. The spiral direction of the matching surface 159 is opposite to the spiral direction of the guiding surface 173. In the direction of the blade 150 rotating from the closed position to the open position, the matching surface 159 is spirally arranged away from the matching part 153, and the abutting surface 161 is arranged on one side of the guiding part 157. During assembly, the rotating shaft 155 is inserted into the shaft hole 171, and the two guiding parts 157 correspond to the two guiding grooves 177, and the guiding surface 173 and the matching surface 159 are made to fit. When the blade 150 is in the open position, the abutting surface 161 abuts against the limiting surface 175. When the blade 150 is in the closed position, there is a preset central angle between the abutting surface 161 and the limiting surface 175.

[0081] In this embodiment, the shape of the guiding part 157 is set to match the shape of the guiding groove 177, so that two spaced convex platforms are formed between the two guiding grooves 177 at the end of the blade mounting member 170. And two grooves are formed between the two guiding parts 157 at the end of the matching part 153, so that they have a larger contact area and ensure the stable rotation of the blade 150.

[0082] Of course, in some other embodiments of the present application, the guiding part 157 can also be set as two convex platforms.

[0083] Secondly, in some embodiments of the application, the positions of the guiding groove 177 and the guiding part 157 can also be interchanged. That is, the guiding groove 177 is arranged at the end of the matching part 153, and the guiding part 157 is arranged at the end of the connecting member of the blade 150.

[0084] In this embodiment, when the blade 150 is in the open position, the value range of the included angle between the angle of the blade 150 and the axis is 45° to 75°. For example, it can be 45°, 60°, 75°, etc.

[0085] Please refer to Figures 1 to 10, in this embodiment, the blade 150 is fan-shaped, the engaging portion 153 is arranged along the radial direction of the blade 150 and is offset from the angular bisector of the blade 150, so that after the rotor 130 stops rotating, the blade 150 can rotate from the open position to the closed position under the action of gravity. That is, it can be understood that when the blade 150 is in the open position, the engaging portion 153 is arranged close to the lower side.

[0086] In this embodiment, the engaging portion 153 is arranged offset from the angular bisector of the blade 150, so that the gravity distribution on both sides of the preset axis of the blade 150 is uneven. That is, the area on one side of the preset axis is large and the area on the other side is small. After the rotor 130 stops rotating, the blade 150 can automatically close under the action of gravity.

[0087] In this embodiment, the front-end filtering device 100 of the range hood further includes a central connecting member 190. A connecting portion is arranged on the side of the blade 150 away from the engaging portion 153. All the blades 150 are connected to the central connecting member 190 through the connecting portion, and the connecting portion can rotate relative to the central connecting member 190 along the preset axis of the blade 150 and can move radially relative to the central connecting member 190.

[0088] By connecting the other side of the blade 150 through the central connecting member 190, the stability of the blade 150 during air sweeping can be ensured.

[0089] Further, the connecting portion is a connecting shaft 163 arranged on the blade 150, and a plurality of insertion holes 191 are arranged on the peripheral edge of the side wall of the central connecting member 190, and the connecting shaft 163 is correspondingly inserted into the insertion holes 191. The stator 110 is provided with a supporting portion 111, the supporting portion 111 extends towards the center, and the central connecting member 190 is rotatably mounted on the supporting portion 111. Of course, in some other embodiments of the present application, the central connecting member 190 can also be fixedly connected to the rotor 130.

[0090] Please refer to Figures 1 to 10 , in this embodiment, the front-end filtering device 100 of the range hood further includes an upper bearing 211, a lower bearing 213 and a top cover 215. The stator 110 is provided with a stepped groove 216, the lower bearing 213 is mounted in the stepped groove 216, the rotor 130 is mounted above the lower bearing 213, the upper bearing 211 is mounted above the rotor 130, the top cover 215 is mounted above the upper bearing 211 and is fixedly connected to the stator 110, and magnets are arranged on the side wall of the stepped groove 216 and corresponding to the area of the stator 110. By arranging the upper bearing 211 and the lower bearing 213 at the upper and lower ends of the rotor 130, the better rotation of the rotor 130 can be ensured.

[0091] Further, in this embodiment, the distance of the radial movement of the blade 150 is set to ensure that after the rotor 130 stops rotating, the blade 150 returns to the closed position, i.e., the horizontal direction. Secondly, a contact block can also be provided on the side wall of the rotor 130. When the blade 150 is in the closed position, the windward side of the blade 150 rotates downward and abuts against the contact block.

[0092] Further, an installation boss 113 is provided on the outer peripheral edge of the stator 110, and a part of the top cover 215 protrudes from the outer peripheral edge of the stator 110. The installation boss 113 and the top cover 215 are clamped on the table top of the island platform body 310, so as to achieve fixation.

[0093] In this embodiment, the front-end filtering device 100 of the range hood further includes a safety protection net, and the safety protection net covers the outer peripheral edge of the rotor 130 to provide safety protection during the rotation process.

[0094] In summary, in this embodiment, by providing a front-end filtering device for the range hood at the smoke inlet 313 of the island platform integrated machine 300, after the island platform integrated machine 300 is powered on, the rotor 130 starts to rotate. The blade 150 can rotate along its preset axis to the open position, and a smoke inlet gap 151 is formed between any two adjacent blades 150. The rotor 130 drives the blade 150 to rotate to generate an axial suction force, thereby enhancing the smoking effect. At the same time, during the rotation of the blade 150, when the oil fume collides with the rotating blade 150, the oil droplets and fog droplets in the oil fume gather into large particles through collision and adhere to the surface of the blade 150, and the smoke will flow backward through the smoke inlet gap 151, thereby separating the oil and the smoke. After the island platform integrated machine 300 is turned off, the blade 150 can rotate along the preset axis and be in the closed position to close the smoke inlet channel 131, thereby preventing foreign objects from falling in and avoiding the backflow of air into the kitchen.

[0095] Embodiment 2

[0096] Please refer to Figures 11 to 14 , the arrow in the figure indicates the rotation direction of the rotor 130. This embodiment is basically the same as Embodiment 1, and the difference lies in the structure of the blade 150. In Embodiment 1, the blade 150 rotates from the closed position to the open position by the centrifugal force received by the blade 150. In this embodiment, the blade 150 rotates from the closed position to the open position by the thrust of the wind during the rotation process of the blade 150.

[0097] In this embodiment, the blade 150 includes a blade body 164 and a windward wing 165 provided on the blade body 164. A preset included angle is formed between the windward wing 165 and the blade body 164, and the included angle can be 60°. The blade 150 is rotatably connected to the rotor 130 through a shaft housing.

[0098] When the rotor 130 stops rotating and the blade 150 is in the closed state under the action of gravity, the windward wing 165 tilts upward. When the rotor 130 drives the blade 150 to rotate, the windward wing 165 of the blade 150 is subjected to the thrust of the airflow, so that the blade 150 rotates along the preset axis. After that, the blade body 164 will also be subjected to the thrust of the airflow when it tilts, realizing the rotation of the blade 150 from the stop position to the open position.

[0099] Furthermore, the windward wing 165 can be arranged at one end of the windward side of the blade 150, and through the bending process, a preset included angle is formed between the blade body 164 and the windward wing 165. Of course, in some other embodiments of the present application, the windward wing 165 can also be obliquely welded to the blade body 164 by welding.

[0100] Embodiment 3

[0101] Please refer to Figure 15 and Figure 16 In this embodiment, the structure is basically the same as that of Embodiment 1, the difference is that the way the blade 150 moves along its preset axis is different.

[0102] Specifically, the front-end filtering device 100 of the range hood further includes a magnetic member 230, and the magnetic member 230 is connected to the stator 110. The blade 150 is rotatably connected to the rotor 130 and the central connecting member 190 through shafts provided at both ends. Secondly, the side wall of the rotor 130 is also provided with a first abutting block and a second abutting block. When the blade 150 abuts against the first abutting block, the blade 150 stops rotating and the blade 150 is in the open position, while when the blade 150 abuts against the second abutting block, the blade 150 is in the closed position. The blade 150 is made of a metal such as iron that can be adsorbed by the magnetic member 230.

[0103] When the rotor 130 is in the stopped state, the blade 150 rotates downward under the action of gravity until the windward surface abuts against the abutting block and reaches the closed position. When the rotor 130 rotates to drive the blade 150 to rotate, a specific position of each blade 150 will correspond to the magnet, and the magnet will generate a downward force on the area on the leeward side of the blade 150, causing the blade 150 to rotate a certain angle. After rotation, the windward area of the blade 150 increases, and then the blade 150 will continue to rotate to the open position under the action of the airflow thrust and the magnetic force. After the rotor 130 rotates one circle, the magnetic member 230 will cause all the blades 150 to rotate to the open position.

[0104] When the magnetic member 230 corresponds to the windward side of the blade 150 on the shaft side in the closed state of the blade 150, the blade 150 will not rotate along the preset axis due to the support of the second abutting block. When the rotor 130 drives the blade 150 to rotate to a region on the leeward side of the preset axis corresponding to the magnetic member 230, the blade 150 will rotate along its preset axis, so that the blade 150 opens an angle of attack. After the blade 150 with the angle of attack formed will continue to rotate rapidly along the preset axis under the combined action of the airflow thrust and the magnetic force until it abuts against the second abutting block, thus realizing the process of the blade 150 rotating from the closed state to the open state.

[0105] In this embodiment, the magnetic member 230 is an electromagnet. When the rotor 130 is powered on, the electromagnet is also powered on at the same time. After the rotor 130 rotates one or more circles, the power supply to the electromagnet is stopped, and the blade 150 will continue to remain in the open position under the action of the airflow thrust. After the rotor 130 stops rotating, the airflow thrust disappears, and the blade 150 can rotate back to the closed state under the action of gravity.

[0106] Of course, in this embodiment, the magnetic member 230 can also be a permanent magnet.

[0107] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A range hood front-end filter device, characterized in that: It includes a stator (110), a rotor (130) and a plurality of blades (150); The rotor (130) is mounted on the stator (110) and is rotatable relative to the stator (110); The rotor (130) is provided with a smoke inlet channel (131); The blades (150) are arranged in the smoke inlet channel (131) and are mounted on the rotor (130) along the radial direction of the smoke inlet channel (131); a plurality of blades (150) are arranged along the circumference of the smoke inlet channel (131); The rotation of the rotor (130) can cause the blades (150) to open the smoke inlet channel (131); and when the rotor (130) stops rotating, the blades (150) can close the smoke inlet channel (131).

2. The range hood front-end filter device according to claim 1, characterized in that: The inner periphery of the smoke inlet channel (131) is provided with a plurality of blade mounting members (170); The plurality of blade mounting members (170) are arranged at the same height and at intervals; All the blades (150) are provided with a matching portion (153); The blade (150) is mounted on the blade mounting member (170) via the matching portion (153), and the matching portion (153) is rotatable relative to the blade mounting member (170).

3. The range hood front-end filter device according to claim 2, characterized in that: One of the matching portion (153) and the blade mounting member (170) is provided with a rotating shaft (155), and the other is provided with an axial hole (171), and the rotating shaft (155) is inserted into the axial hole (171).

4. The range hood front-end filter device according to claim 2, characterized in that: A guide surface (173) is provided at one end of the blade mounting member (170) opposite to the matching portion (153), and a guide portion (157) is provided on the matching portion (153) corresponding to the guide surface (173); When the rotor (130) rotates, the blade (150) can move radially outward under the action of centrifugal force. During the movement, the guide portion (157) and the guide surface (173) cooperate to enable the blade (150) to rotate along its own preset axis to an open position.

5. The range hood front-end filter device according to claim 4, characterized in that: In the direction in which the blade (150) rotates from the closed position to the open position, the guide surface (173) is spirally arranged in a direction away from the matching portion (153).

6. The range hood front-end filter device according to claim 5, characterized in that: A limiting surface (175) is provided at the end of the guide surface (173); when the blade (150) is in the open position, the guide portion (157) abuts against the limiting surface (175).

7. The range hood front-end filter device according to claim 6, characterized in that: The blade mounting member (170) is provided with a plurality of guide surfaces (173), all of the guide surfaces (173) are evenly arranged in the circumferential direction, the end of the matching portion (153) is provided with a plurality of guide portions (157), and the plurality of guide portions (157) correspond to the positions of the plurality of guide surfaces (173); and / or, The guide portion (157) comprises a matching surface (159) and an abutting surface (161); in the direction in which the blade (150) rotates from the closed position to the open position, the matching surface (159) is spirally arranged in a direction away from the matching portion (153); the abutting surface (161) is arranged on one side of the guide portion (157); the matching surface (159) abuts against the guide surface (173); the abutting surface (161) corresponds to the limiting surface (175); and the two abut against each other when the blade (150) is in the open position; and / or, When the blade (150) is in the open position, the angle between the blade (150) and the axis is in the range of 45° to 75°.

8. The range hood front-end filter device according to any one of claims 2 to 7, characterized in that: The blade (150) is fan-shaped, and the matching portion (153) is arranged along the radial direction of the blade (150) and deviates from the angular bisector of the blade (150), so that the blade (150) can rotate from an open position to a closed position under the action of gravity after the rotor (130) stops rotating; and / or, The range hood front-end filtering device also includes a central connecting piece (190), and a connecting portion is provided on a side of the blade (150) away from the matching portion (153), and all the blades (150) are connected to the central connecting piece (190) through the connecting portion, and the connecting portion can rotate relative to the central connecting piece (190) along a preset axis of the blade (150), and can move radially relative to the central connecting piece (190).

9. The range hood front-end filter device according to any one of claims 1 to 7, characterized in that: The range hood front-end filtering device further comprises an upper bearing (211), a lower bearing (213) and a top cover (215); The stator (110) is provided with a step groove (216), the lower bearing (213) is installed in the step groove (216), the rotor (130) is installed above the lower bearing (213), the upper bearing (211) is installed above the rotor (130), the top cover (215) is installed above the upper bearing (211) and is fixedly connected to the stator (110), and a magnet is provided on the side wall of the step groove (216) and in an area corresponding to the stator (110).

10. Island table all-in-one machine, characterized in that: It comprises an island body (310), a fan (330) and a range hood front-end filter device according to any one of claims 1 to 9; A smoke collecting chamber (311) is provided in the island table body (310), and a smoke inlet (313) communicating with the smoke collecting chamber (311) is provided on the table top of the island table body (310); The fan (330) is installed in the smoke collecting chamber (311), and the stator (110) is fixedly installed on the smoke inlet (313).

Images