Range hood filtering module and range hood

Abstract

The invention provides a range hood filtering module and a range hood, the range hood filtering module is used for being installed at an air outlet of the range hood, the range hood filtering module comprises a filtering structure main body, and a filtering net is arranged between an air inlet and the air outlet of the filtering structure main body; and the front filtering assembly is mounted at the air inlet of the filtering structure main body. According to the range hood filtering module, the front filtering assembly is arranged at the air inlet of the filtering structure body, the number of times of filtering airflow can be increased, the overall filtering effect of the range hood filtering module is improved, meanwhile, oil drops attached to the filtering net can be reduced, the service life of the filtering net is prolonged, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of kitchen appliances, and in particular relates to a range hood filter module, and also relates to a range hood equipped with the range hood filter module. Background Art

[0002] The preparation process of traditional Chinese food culture includes frying, stir-frying, deep-frying, and baking. A large amount of oil smoke is generated in the process of making food. The oil smoke not only seriously pollutes the kitchen environment, but also causes great harm to the health of kitchen operators who are in the oil smoke environment for a long time. Therefore, range hoods are widely used in kitchens.

[0003] Traditional range hoods connect the air outlet to the public flue, which is highly dependent on the public flue. When the public flue fails, or when the exhaust pressure of the public flue is high during peak cooking hours, the exhaust efficiency of the range hood will decrease.

[0004] An internal exhaust range hood is one that discharges smoke into the room. This type of range hood features a filter module at the air outlet, which absorbs grease and harmful gases from the smoke, leaving the filtered air clean and ready for direct discharge into the room. For example, Chinese utility model patent application number CN202220605102.6 discloses an air outlet base and range hood with an internal exhaust filter assembly, which utilizes a filter layer filled with activated carbon to filter the exhaust air.

[0005] However, a large amount of oil droplets from the filter module of the existing internal exhaust range hood will adhere to the filter net, and the filter net has a short service life and needs to be replaced frequently.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] The present invention provides a range hood filter module, which can reduce oil droplets adhering to the filter screen by arranging a pre-filter component at the air inlet of the filter structure body, thereby solving the problem that the filter screen of the existing internal exhaust range hood filter module needs to be frequently replaced.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A range hood filter module, for installation at the air outlet of the range hood, comprising:

[0010] A filter screen is provided between the air inlet and the air outlet of the filter structure body;

[0011] The pre-filter assembly is installed at the air inlet of the filter structure body.

[0012] Furthermore, the pre-filter component includes:

[0013] The support frame is cylindrical and installed at the air inlet of the main body of the filter structure;

[0014] A pre-filter is arranged in the support frame and covers the flow surface of the support frame;

[0015] Preferably, the mesh number of the pre-filter is lower than the mesh number of the filter;

[0016] Preferably, the pre-filter is made of metal material.

[0017] Furthermore, the front filter extends downwardly at an angle.

[0018] Furthermore, a draw-out opening is provided on one side of the support frame, and the pre-filter is detachably mounted on the support frame through the draw-out opening;

[0019] Preferably, the pre-filter is inclined downward along its insertion direction.

[0020] Furthermore, a supporting groove protruding inward from the inner wall of the supporting frame is provided in the supporting frame, and the supporting groove is used to support the edge of the pre-filter;

[0021] Preferably, the support groove extends from both ends of the drawer opening to opposite sides of the support frame, and / or the support groove is provided in the support frame on a side opposite to the drawer opening.

[0022] Furthermore, the end of the pre-filter is at least partially arranged outside the drawer port, and one end of the pre-filter arranged outside the drawer port is provided with a bending portion bent toward one side of the pre-filter.

[0023] Furthermore, the filter structure body includes a filter screen support frame, the filter screen support frame includes a bottom wall, and a side wall extending toward one side of the bottom wall around the edge of the bottom wall, and the other end of the side wall opposite to the bottom wall forms an air inlet of the filter structure body;

[0024] A hollow opening is provided on the bottom wall and / or the side wall, the hollow opening forms an air outlet of the filter structure body, and the filter screen is provided on the inner side of the air outlet of the filter structure body;

[0025] Preferably, the bottom wall and / or side wall of the filter support frame are provided with reinforcing ridges;

[0026] Preferably, the filter screen comprises carbon cloth and / or spunlace cloth.

[0027] The present invention further provides a range hood comprising a housing, wherein an air outlet of the range hood is provided on the housing, and the range hood filter module is installed at the air outlet of the range hood.

[0028] Furthermore, the range hood filter module is installed at the air outlet of the range hood through the installation structure;

[0029] Preferably, the mounting structure includes:

[0030] A first mounting portion is used to connect to the air inlet end of the range hood filter module, and a connector protruding downward is provided at the bottom of the first mounting portion;

[0031] The second mounting portion is used to connect to the air outlet of the range hood. The top of the second mounting portion is provided with an annular groove that protrudes upward, and the connector is inserted into the annular groove;

[0032] Preferably, a clamping protrusion is provided on the outer peripheral wall of the joint, and a clamping groove corresponding to the clamping protrusion is provided on the outer ring groove wall of the annular groove, and the clamping protrusion is clamped in the clamping groove;

[0033] Preferably, the clamping groove is spaced apart from the bottom of the annular groove;

[0034] An oil leakage port communicating with the inner circumference of the annular groove is provided on the groove bottom of the annular groove.

[0035] Furthermore, the pre-filter assembly is detachably mounted at the air inlet of the filter structure body; the first mounting portion is detachably mounted at the air inlet of the pre-filter assembly;

[0036] Preferably, a first clamping claw is provided at the air inlet of the filter structure body, and a first clamping plate corresponding to the first clamping claw is provided at the air outlet of the pre-filter assembly;

[0037] A second clamping claw is provided at the air inlet of the pre-filter assembly, and a second clamping plate corresponding to the second clamping claw is provided on the top of the first mounting portion;

[0038] Preferably, the first clamping claw and the second clamping plate are adapted to each other;

[0039] Preferably, the axis of the connector and the axis of the pre-filter assembly are spaced apart from each other.

[0040] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0041] 1. The present invention provides a pre-filter assembly at the air inlet of the filter structure body, which can increase the number of times the air flow is filtered and improve the overall filtering effect of the range hood filter module. At the same time, it can reduce the oil droplets attached to the filter net, increase the service life of the filter net, and improve the user experience.

[0042] 2. The present invention sets the pre-filter to be tilted downward, so that the oil droplets on the pre-filter can flow downward along the inner wall of the pre-filter and the support frame, which is convenient for collection and subsequent cleaning and avoids direct dripping of the oil droplets.

[0043] 3. The present invention provides a pre-filter that can be pulled out and arranged on the support frame, which makes it easy for users to clean or replace the pre-filter during use, thereby ensuring the filtering effect of oil smoke.

[0044] 4. The present invention can improve the response to emergencies by arranging the first claw and the second clamping plate to adapt to each other. Specifically, when the pre-filter component fails and needs to be temporarily replaced, the first mounting part can be connected through the first claw and the second clamping plate, and then the whole formed by the first mounting part and the filter structure body can be installed on the second mounting part. In this way, only the filter structure body is used to filter the airflow, so that the user can use the range hood normally. The user can select a suitable pre-filter component during this period; moreover, it is beneficial to update and upgrade the pre-filter component later.

[0045] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0047] Figure 1 An exploded view of the range hood filter module and the mounting structure in an embodiment of the present invention;

[0048] Figure 2 This is a cross-sectional view of the connection structure between the range hood filter module and the first mounting portion in an embodiment of the present invention;

[0049] Figure 3 This is a schematic diagram of the structure in which the pre-filter is pulled out in an embodiment of the present invention;

[0050] Figure 4 This is a structural diagram of a support frame in an embodiment of the present invention;

[0051] Figure 5 Schematic diagram of the structure of the filter support frame in an embodiment of the present invention;

[0052] Figure 6 For the embodiment of the present invention Figure 5 Enlarged view of point A in the middle;

[0053] Figure 7 This is a structural diagram of the first mounting portion in an embodiment of the present invention;

[0054] Figure 8 Schematic diagram of the structure of the second mounting portion in an embodiment of the present invention.

[0055] Description of the main components in the figure:

[0056] 1. Filter structure body; 11. Filter screen support frame; 111. Bottom wall; 112. Side wall; 1121. Axial strip; 1122. Circumferential strip; 1123. Support ring; 113. Air outlet of filter structure body; 12. Filter screen; 13. First clamping claw; 131. First part; 132. Second part; 133. First protrusion; 2. Pre-filter assembly; 21. Support frame; 211. Pull-out opening; 212. Support groove; 213. First clamping plate; 214. Second clamping claw; 215. Shielding part; 22. Pre-filter screen; 221. Bending part; 3. First mounting part; 31. Joint; 32. Clamping protrusion; 33. Second clamping plate; 4. Second mounting part; 41. Annular groove; 42. Check valve plate; 43. Clamping groove.

[0057] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0059] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0060] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0061] like Figures 1 to 8As shown, in an embodiment of the present invention, a range hood filter module is introduced. The range hood filter module is used to be installed at the air outlet of the range hood to filter the airflow discharged from the range hood so that the airflow meets a predetermined emission standard.

[0062] Specifically, the range hood filter module is applied to an internal exhaust range hood, that is, the airflow filtered by the range hood filter module can be directly discharged into the room.

[0063] like Figures 1 to 3 As shown, in this embodiment, the range hood filter module includes a filter structure body 1 and a pre-filter assembly 2. A filter screen 12 is provided between the air inlet and air outlet of the filter structure body 1, and the pre-filter assembly 2 is mounted at the air inlet of the filter structure body 1. This increases the number of times the airflow is filtered, improving the overall filtering effect of the range hood filter module. It also reduces oil droplets adhering to the filter screen, extending the filter screen's service life and enhancing the user experience.

[0064] Preferably, the filter 12 on the filter structure main body 1 can filter small particles of oil fume particles, large particles of oil fume particles and odor molecules. The airflow discharged from the air outlet of the range hood first enters the pre-filter component 2, and after being filtered by the pre-filter 22 in the pre-filter component 2, enters the filter structure main body 1. The filter 12 on the filter structure main body 1 can filter the airflow again, and filter out the oil fume particles and odor molecules that are not filtered out by the pre-filter 22, so that the filtered airflow is clean and can be directly discharged into the room.

[0065] like Figure 3 and Figure 4 As shown, in this embodiment of the present invention, the pre-filter assembly 2 includes a support frame 21 and a pre-filter 22. The support frame 21 is cylindrical and mounted at the air inlet of the filter structure body 1. The pre-filter 22 is disposed within the support frame 21 and covers the flow surface of the support frame 21. That is, after being discharged from the air outlet of the range hood, the airflow enters the cylindrical support frame 21, flows along the support frame 21, and after being filtered by the pre-filter 22 within the support frame 21, enters the filter structure body 1 through the air inlet of the filter structure body 1.

[0066] In this embodiment, the mesh number of the pre-filter 22 is lower than the mesh number of the filter 12 .

[0067] In this embodiment, the axis of the pre-filter assembly 2 can extend in the horizontal direction, can extend in the vertical direction, or can be inclined, and can be adjusted according to installation requirements.

[0068] Preferably, in this embodiment, the pre-filter 22 is in sheet shape.

[0069] Preferably, the pre-filter 22 is made of metal material. In some specific embodiments, the pre-filter 22 can be a dense metal mesh, that is, a high-density metal mesh structure, which is mainly used to improve the oil fume separation effect and durability.

[0070] Preferably, in this embodiment, the pre-filter 22 is detachably mounted on the support frame 21. Specifically, the pre-filter 22 is pullable from one side of the support frame 21 and is disposed on the support frame 21.

[0071] By making the pre-filter 22 detachable relative to the support frame 21, it is easy to clean the pre-filter 22. The operator can remove the pre-filter 22 from the support frame 21 and soak and clean the pre-filter 22 with a detergent to ensure that the pre-filter 22 can stably exert its filtering effect.

[0072] In this embodiment, in order to ensure the installation stability of the pre-filter 22 , a structure for supporting the pre-filter 22 is provided on the inner wall of the support frame 21 .

[0073] like Figure 4 As shown, in this embodiment, a pull-out opening 211 is provided on one side of the support frame 21, and the pre-filter 22 is detachably mounted on the support frame 21 through the pull-out opening 211. A supporting groove 212 is provided in the support frame 21, which protrudes inward from the inner wall of the support frame 21, and is used to support the edge of the pre-filter 22.

[0074] Specifically, in this embodiment, the pull-out port 211 is arranged on one side of the support frame 21, and the supporting groove 212 is arranged on the inner wall of the support frame 21 on the other side opposite to the pull-out port 211. One end of the pre-filter 22 is supported by the pull-out port 211, and the other end of the pre-filter 22 is supported by the supporting groove 212; and / or, the supporting groove 212 extends from both ends of the pull-out port 211 into the support frame 21, and extends to the other side of the support frame 21 opposite to the pull-out port 211. The supporting groove 212 supports the pre-filter 22 from the edges on both sides of the pre-filter 22 along the pulling direction.

[0075] Preferably, in this embodiment, the support grooves 212 provided on the left and right sides of the pre-filter screen 22 along the pulling direction are parallel to each other and parallel to the pulling direction of the pre-filter screen 22 .

[0076] In this embodiment, the cross section of the support frame 21 can be any shape. Specifically, the cross section of the support frame 21 can be a regular shape such as a circle, an ellipse, a polygon, or an irregular shape formed by interconnected arcs and straight lines.

[0077] Preferably, in this embodiment, the cross section of the support frame 21 is circular, the support groove 212 protrudes inward from the inner wall of the support frame 21 , and the notch of the support groove 212 faces the inner periphery of the support frame 21 .

[0078] The two ends of the pre-filter 22 along the pulling direction are configured as arcs, and the left and right sides of the pre-filter 22 are configured as parallel straight lines. The pre-filter 22 is inserted into the support frame 21 through the pulling opening 211. The support grooves 212 are provided on the left and right sides of the pre-filter 22 and at the ends of the pre-filter 22. Specifically, the support grooves 212 are provided in the support frame 21, and the extension path of the support grooves 212 is U-shaped.

[0079] In this embodiment, the space between the outer sides of the support grooves 212 on the left and right sides of the pre-filter 22 and the inner wall of the support frame 21 is sealed. That is, shielding portions 215 are connected between the outer sides of the support grooves 212 on the left and right sides of the pre-filter 22 and the inner wall of the support frame 21 to prevent airflow from passing through the space between the outer sides of the support grooves 212 on the left and right sides of the pre-filter 22 and the inner wall of the support frame 21.

[0080] In some preferred embodiments, the end of the pre-filter 22 is at least partially disposed outside the drawer opening 211, and one end of the pre-filter 22 disposed outside the drawer opening 211 is provided with a bent portion 221 that bends toward one side of the pre-filter 22. The provision of the bent portion 221 facilitates the operator in drawing the pre-filter 22.

[0081] Preferably, in order to ensure the integrity of the range hood filter module, the bending portion 221 is configured to be an arc shape extending along the length direction of the drawing opening 211 .

[0082] In some preferred embodiments, the pre-filter 22 extends downward at an angle, which can enable the oil droplets on the pre-filter 22 to flow downward along the inner walls of the pre-filter 22 and the support frame 21, thereby facilitating collection and subsequent cleaning, and preventing the oil droplets from dripping directly. Specifically, it can prevent the oil droplets from dripping directly onto the check valve plate 42 at the air outlet of the range hood, thereby ensuring the smooth operation of the check valve plate 42.

[0083] Further preferably, the pre-filter 22 is tilted downward along its insertion direction, thereby preventing oil droplets attached to the pre-filter 22 from flowing out of the pull-out opening 211 to the outside of the support frame 21, thereby ensuring the cleanliness of the outer peripheral wall of the pre-filter assembly 2.

[0084] Preferably, in this embodiment, the bent portion 221 is arranged perpendicular to the pre-filter 22 and extends toward the lower side of the pre-filter 22. Therefore, after the pre-filter 22 is inserted into the support frame 21, since the pre-filter 22 is tilted downward in the insertion direction, the distance between the bent portion 221 and the outer peripheral wall of the support frame 21 can gradually increase from top to bottom, making it easier for the operator to hold the pre-filter 22.

[0085] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 As shown, in this embodiment, the filtering structure body 1 includes a filter support frame 11 and a filter 12 .

[0086] Specifically, the filter support frame 11 includes a bottom wall 111 and a side wall 112 extending toward one side of the bottom wall 111 from the edge of the bottom wall 111. The other end of the side wall 112, opposite the bottom wall 111, forms the air inlet of the filter structure body 1. A hollow opening is provided in the bottom wall 111 and / or the side wall 112, forming the air outlet 113 of the filter structure body. The filter 12 is disposed inside the air outlet 113 of the filter structure body.

[0087] Preferably, the side wall 112 of the filter support frame 11 is provided with a plurality of evenly arranged hollow openings.

[0088] In this embodiment, the filter support frame 11 can be cylindrical or prismatic as a whole.

[0089] Preferably, in this embodiment, the filter support frame 11 is described as being cylindrical as a whole.

[0090] In some specific embodiments, the side wall 112 of the filter support frame 11 includes a plurality of axial bars 1121 extending along the axial direction of the filter support frame 11 and arranged at intervals along the circumference of the filter support frame 11, and circumferential bars 1122 extending along the circumference of the filter support frame 11. The axial bars 1121 and the circumferential bars 1122 are arranged on the same circle, and the axial bars 1121 and the circumferential bars 1122 are staggered and interconnected to form the side wall 112 of the filter support frame 11.

[0091] Preferably, a plurality of circumferential bars 1122 are arranged at intervals along the axial direction of the filter support frame 11 .

[0092] The bottom wall 111 of the filter support frame 11 is configured as a circular plate, and one end of the axial bar 1121 is connected to the circular plate to form the filter support frame 11 .

[0093] Preferably, the axial strips 1121 and the circumferential strips 1122 are configured as long strips, and the axial strips 1121 and the circumferential strips 1122 are coplanar on the side close to the axis of the filter support frame 11. The filter screen 12 is a cylindrical structure, and the inner wall of the side wall 112 of the filter support frame 11 is in contact with the outer wall of the filter screen 12.

[0094] Preferably, the circumferential strips 1122 are configured as a multi-segment structure connected between two adjacent axial strips 1121 .

[0095] Preferably, a first reinforcing rib is provided on the side of the axial bar 1121 and / or the circumferential bar 1122 away from the filter support frame 11, and the first reinforcing rib on the axial bar 1121 extends along the length direction of the axial bar 1121, and the first reinforcing rib on the circumferential bar 1122 extends along the length direction of the circumferential bar 1122.

[0096] Preferably, in this embodiment, a second reinforcing rib is provided on the bottom wall 111 of the filter support frame 11 .

[0097] Preferably, in this embodiment, a support ring 1123 is provided at one end of the axial bar 1121 away from the bottom wall 111, the inner wall of the support ring 1123 is coplanar with the inner wall of the axial bar 1121, and the outer peripheral wall of the support ring 1123 protrudes outward relative to the outer wall of the axial bar 1121.

[0098] In this embodiment, the support ring 1123 is a special circumferential strip 1122 , and the support ring 1123 constitutes the air inlet of the filter structure body 1 .

[0099] Preferably, a circle of third reinforcing ribs extending along the circumference of the support ring 1123 is provided on the outer peripheral wall of the support ring 1123 .

[0100] In this embodiment, the filter screen 12 of the filter structure body 1 can be designed according to actual needs, and can be specifically configured to include carbon cloth and / or spunlace cloth and / or HEPA high-efficiency filter screen 12.

[0101] In some specific embodiments, the filter 12 may be a composite filter, specifically composed of a metal material and a polymer material, for example, a metal mesh followed by a nylon or PET fiber layer; it may also include an activated carbon filter for absorbing odors.

[0102] Optionally, an oil-proof coating may be provided on the filter screen 12 to reduce the adhesion of oil stains.

[0103] In this embodiment, the pre-filter assembly 2 is detachably mounted at the air inlet of the filter structure body 1. Thus, the pre-filter assembly 2 can be removed as a whole for cleaning, specifically, the support groove 212 on the inner wall of the support frame 21 can be cleaned.

[0104] In this embodiment, the pre-filter assembly 2 and the filter structure main body 1 can be connected by screws, snap fasteners, or positioning pins. Of course, the two can also be connected by threads.

[0105] Specifically, in this embodiment, a first claw 13 is provided at the air inlet of the filter structure main body 1, and a first clamping plate 213 corresponding to the first claw 13 is provided at the air outlet of the pre-filter component 2. The first claw 13 is clamped with the first clamping plate 213 to realize the installation between the pre-filter component 2 and the filter structure main body 1.

[0106] In this embodiment, the first clamping claw 13 is disposed on the end face of the filter structure main body 1 away from the bottom wall 111, and includes a first portion 131 protruding outwardly along the axial direction of the filter structure main body 1, and a second portion 132 extending from the end of the first portion 131 along the circumferential direction of the filter structure main body 1, with the second portion 132 being spaced apart from the end face of the filter structure main body 1. The first clamping plate 213 protrudes outwardly in the horizontal direction from the outer peripheral wall of the pre-filter assembly 2, and a clamping interface corresponding to the first clamping claw 13 is provided in the middle portion of the first clamping plate 213. The first clamping claw 13 is inserted into the clamping interface, and then the filter structure main body 1 and the pre-filter assembly 2 are rotated relative to each other, so that the first clamping claw 13 is clamped to the first clamping plate 213.

[0107] Preferably, a first protrusion 133 is provided on one side of the second portion 132 close to the filter structure body 1 , and the distance between the first protrusion 133 and the end surface of the filter structure body 1 is less than or equal to the thickness of the first clamping plate 213 .

[0108] Preferably, a reinforcing rib is provided between the bottom of the first clamping plate 213 and the outer peripheral wall of the pre-filter assembly 2 .

[0109] Preferably, a plurality of first claws 13 are provided, spaced apart along the circumference of the filter structure main body 1, and the first clamping plates 213 on the pre-filter structure correspond one to one with the first claws 13. In this embodiment, the second portions 132 of the first claws 13 are oriented in the same direction along the circumference of the filter structure main body 1, i.e., the second portions 132 extend in a clockwise direction relative to the first portion 131, or the second portions 132 extend in a counterclockwise direction relative to the first portion 131.

[0110] Preferably, in this embodiment, the inner diameter of the air outlet of the pre-filter assembly 2 is smaller than the inner diameter of the air inlet of the filter structure body 1, that is, the inner diameter of the upper end of the support frame 21 is smaller than the inner diameter of the support ring 1123, so that the upper end of the pre-filter assembly 2 can limit the filter mesh 12 in the filter mesh support frame 11.

[0111] In this embodiment, after the pre-filter assembly 2 is removed, the filter screen 12 can be removed from the filter screen support frame 11, so that the filter screen 12 can be maintained or replaced.

[0112] like Figure 1 、 Figure 7 and Figure 8 As shown, an embodiment of the present invention further provides a mounting structure for a range hood filter module, comprising a first mounting portion 3 and a second mounting portion 4 that cooperate with each other.

[0113] The first mounting portion 3 and the second mounting portion 4 are both cylindrical. The first mounting portion 3 is used to connect to the air inlet of the range hood filter module. A connector 31 is provided at the bottom of the first mounting portion 3, extending downward. The second mounting portion 4 is used to connect to the air outlet of the range hood. An annular groove 41 is provided at the top of the second mounting portion 4, extending upward, into which the connector 31 is inserted.

[0114] Specifically, the annular groove 41 includes a groove bottom, an inner groove wall and an outer groove wall. The inner groove wall and the outer groove wall are coaxial and spaced apart from each other. The groove bottom is connected between the lower ends of the inner groove wall and the outer groove wall.

[0115] The inner diameter of the joint 31 is greater than or equal to the outer diameter of the inner ring groove wall, and the outer diameter of the joint 31 is less than or equal to the inner diameter of the outer ring groove wall.

[0116] In this embodiment, the first mounting portion 3 and the second mounting portion 4 can be connected to each other by any possible means such as screws, buckles, threads, positioning pins, etc.

[0117] In some preferred embodiments, a locking protrusion 32 is provided on the outer peripheral wall of the joint 31 , and a snap-fit groove 43 corresponding to the locking protrusion 32 is provided on the outer ring groove wall of the annular groove 41 , and the locking protrusion 32 is snap-fitted into the snap-fit groove 43 .

[0118] Preferably, the locking protrusion 32 and the locking groove 43 are first vertically plugged into each other and then rotated to lock into each other.

[0119] Specifically, the cross section of the joint 31 is circular, and the annular groove 41 is annular in shape corresponding to the joint 31. The engaging groove 43 includes a first extending groove extending downward from the upper edge of the outer annular groove wall and a second extending groove extending horizontally from the lower end of the first extending groove, wherein the second extending groove extends along the circumference of the outer annular groove wall.

[0120] The latching protrusion 32 is in the shape of a block protruding outward from the outer peripheral wall of the joint 31. The width of the latching protrusion 32 in the circumferential direction of the joint 31 is less than or equal to the width of the first extension groove, and the thickness of the latching protrusion 32 in the axial direction of the joint 31 is greater than or equal to the width of the second extension groove.

[0121] Preferably, the thickness of the latching protrusion 32 gradually decreases toward one end of the second extension groove. Specifically, a second protrusion is provided on the top groove wall of the second extension groove, and the gap between the second protrusion and the bottom groove wall of the second extension groove is less than or equal to the thickness of the latching protrusion 32. The top of the latching protrusion 32 toward one end of the second extension groove is provided as a downwardly inclined surface.

[0122] Preferably, there are multiple engaging grooves 43, which are arranged at intervals along the circumference of the outer ring groove wall, and the engaging protrusions 32 correspond one to one with the engaging grooves 43. The second extension grooves of the engaging grooves 43 have the same direction along the circumference of the outer ring groove wall.

[0123] Preferably, the clamping groove 43 is spaced apart from the bottom of the annular groove 41 to prevent the oil droplets collected in the annular groove 41 from flowing out of the clamping groove 43 .

[0124] Preferably, an oil leakage port connected to the inner circumference of the annular groove 41 is provided on the bottom of the annular groove 41, and the oil leakage port is used to guide the oil droplets in the annular groove 41 to the interior of the second mounting part 4, and the oil droplets flowing out of the oil leakage port flow downward along the inner wall of the second mounting part 4.

[0125] In this embodiment, the second mounting portion 4 is an air outlet seat of the range hood, and the second mounting portion 4 can be mounted on the housing of the range hood by screws.

[0126] Preferably, in this embodiment, the first mounting portion 3 is detachably mounted at the air inlet of the pre-filter assembly 2 .

[0127] Preferably, the first mounting portion 3 is in the shape of an annular plate, and the connector 31 protrudes downwardly and extends from the inner edge of the annular first mounting portion 3 .

[0128] In some preferred embodiments, a second claw 214 is provided at the air inlet of the pre-filter assembly 2, and a second clamping plate 33 corresponding to the second claw 214 is provided on the top of the first mounting portion 3, and the second claw 214 is clamped with the second clamping plate 33.

[0129] Preferably, the structure of the second clamping claw 214 is the same as that of the first clamping claw 13 , and the structure of the second clamping plate 33 is the same as that of the first clamping plate 213 .

[0130] Preferably, the second clamping claw 214 corresponds to the first clamping claw 13 one-to-one, the second clamping plate 33 corresponds to the first clamping plate 213 one-to-one, and the first clamping claw 13 and the second clamping plate 33 are adapted to each other.

[0131] In this embodiment, during normal use, the range hood filter module is configured with a pre-filter assembly 2. Specifically, the pre-filter assembly 2 is connected to the first clamping plate 213 through the first clamping claw 13, and the pre-filter assembly 2 and the first mounting part 3 are connected through the second clamping claw 214 and the second clamping plate 33. Then, the whole formed by the first mounting part 3, the pre-filter assembly 2 and the filter structure main body 1 is installed on the second mounting part 4.

[0132] During use, the responsiveness to emergencies can be improved. Specifically, when the pre-filter assembly 2 fails and needs to be temporarily replaced, the first mounting portion 3 can be connected through the first claw 13 and the second clamping plate, and then the first mounting portion 3 and the filter structure main body 1 are integrally mounted on the second mounting portion 4. Thus, only the filter structure main body 1 is used to filter the airflow, allowing the user to use the range hood normally. The user can select a suitable pre-filter assembly 2 during this period.

[0133] Furthermore, the above configuration allows for configuration of different types of pre-filter assemblies 2 for the range hood filter module. Specifically, different types of pre-filter assemblies 2 may be provided with different numbers of pre-filter screens 22. When two or more pre-filter screens 22 are provided, the pre-filter screens 22 are spaced apart along the axial direction of the support frame 21.

[0134] Preferably, in this embodiment, the pre-filter assembly 2 is coaxially arranged with the filter structure main body 1, while the pre-filter assembly 2 is non-coaxially arranged with the connector 31 of the first mounting structure. Specifically, the axis of the connector 31 is spaced apart from the axis of the pre-filter assembly 2. This facilitates the operator to remove only the connection structure between the range hood filter module and the first mounting portion 3, or only the connection structure between the first mounting portion 3 and the second mounting portion 4.

[0135] In this embodiment, the non-return valve plate 42 of the range hood is arranged on the inner periphery of the annular groove 41 . Specifically, the non-return valve plate 42 can be any non-return valve plate 42 in the prior art.

[0136] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make some changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. The implementation schemes in the above-mentioned embodiments can be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above-mentioned embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A range hood filter module, used to be installed at the air outlet of the range hood, characterized in that: include: A filtering structure main body (1), wherein a filter screen (12) is provided between an air inlet and an air outlet of the filtering structure main body (1); The pre-filter assembly (2) is installed at the air inlet of the filter structure body (1).

2. The range hood filter module according to claim 1, characterized in that: The pre-filter assembly (2) comprises: The supporting frame (21) is cylindrical and is installed at the air inlet of the filtering structure body (1); A pre-filter (22) is arranged in the support frame (21) and covers the flow surface of the support frame (21); Preferably, the mesh number of the pre-filter (22) is lower than the mesh number of the filter (12); Preferably, the pre-filter (22) is made of metal material.

3. The range hood filter module according to claim 2, characterized in that: The pre-filter (22) extends downwardly in an inclined manner.

4. The range hood filter module according to claim 2 or 3, characterized in that: A draw-out opening (211) is provided on one side of the support frame (21), and the pre-filter (22) is detachably mounted on the support frame (21) through the draw-out opening (211); Preferably, the pre-filter (22) is tilted downward along its insertion direction.

5. The range hood filter module according to claim 4, characterized in that: A supporting groove (212) protruding inward from the inner wall of the supporting frame (21) is provided in the supporting frame (21), and the supporting groove (212) is used to support the edge of the pre-filter (22); Preferably, the support groove (212) extends from both ends of the drawer opening (211) to the opposite side of the support frame (21), and / or the support groove (212) is arranged in the support frame (21) on a side opposite to the drawer opening (211).

6. The range hood filter module according to claim 4, characterized in that: The end of the pre-filter (22) is at least partially arranged outside the draw-out opening (211), and one end of the pre-filter (22) arranged outside the draw-out opening (211) is provided with a bent portion (221) bent toward one side of the pre-filter (22).

7. The range hood filter module according to any one of claims 1 to 3, characterized in that: The filter structure body (1) comprises a filter screen support frame (11), the filter screen support frame (11) comprises a bottom wall (111), and a side wall (112) extending toward one side of the bottom wall (111) around the edge of the bottom wall (111), and the other end of the side wall (112) opposite to the bottom wall (111) forms an air inlet of the filter structure body (1); A hollow opening is provided on the bottom wall (111) and / or the side wall (112), the hollow opening forming an air outlet (113) of the filter structure body, and the filter screen (12) is provided inside the air outlet (113) of the filter structure body; Preferably, a reinforcement rib is provided on the bottom wall (111) and / or the side wall (112) of the filter support frame (11); Preferably, the filter screen (12) comprises carbon cloth and / or spunlace cloth.

8. A range hood, comprising a housing, the housing being provided with an air outlet for the range hood, characterized in that: The range hood filter module according to any one of claims 1 to 7 is installed at the air outlet of the range hood.

9. The range hood according to claim 8, characterized in that: The range hood filter module is installed at the air outlet of the range hood through the installation structure; Preferably, the mounting structure includes: A first mounting portion (3) is used to connect to the air inlet end of the range hood filter module, and a connector (31) protruding downward is provided at the bottom of the first mounting portion (3); The second mounting portion (4) is used to connect to the air outlet of the range hood. The top of the second mounting portion (4) is provided with an annular groove (41) that protrudes upward, and the connector (31) is inserted into the annular groove (41); Preferably, a clamping protrusion (32) is provided on the outer peripheral wall of the joint (31), and a clamping groove (43) corresponding to the clamping protrusion (32) is provided on the outer ring groove wall of the annular groove (41), and the clamping protrusion (32) is clamped in the clamping groove (43); Preferably, the clamping groove (43) is spaced apart from the bottom of the annular groove (41); An oil leakage port communicating with the inner periphery of the annular groove (41) is provided on the groove bottom of the annular groove (41).

10. The range hood according to claim 8, characterized in that: The pre-filter assembly (2) is detachably mounted at the air inlet of the filter structure body (1); the first mounting portion (3) is detachably mounted at the air inlet of the pre-filter assembly (2); Preferably, a first clamping claw (13) is provided at the air inlet of the filter structure main body (1), and a first clamping plate (213) corresponding to the first clamping claw (13) is provided at the air outlet of the pre-filter assembly (2); A second clamping claw (214) is provided at the air inlet of the pre-filter assembly (2), and a second clamping plate (33) corresponding to the second clamping claw (214) is provided at the top of the first mounting portion (3); Preferably, the first clamping claw (13) and the second clamping plate (33) are adapted to each other; Preferably, the axis of the joint (31) and the axis of the pre-filter assembly (2) are spaced apart from each other.

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