Filter molecular sieve and range hood

Abstract

The utility model discloses a filter molecular sieve and a range hood, which belong to the technical field of oil smoke filtration, and comprise a positioning frame, a zeolite adsorption layer, an activated carbon adsorption layer and an outer frame, the zeolite adsorption layer is fixedly connected with the positioning frame; the activated carbon adsorption layer is fixedly connected with the positioning frame and is stacked with the zeolite adsorption layer; the outer frame is connected with the positioning frame, so that the zeolite adsorption layer and the activated carbon adsorption layer are surrounded between the outer frame and the positioning frame; an opening for airflow to flow through is formed between the positioning frame and the outer frame, and the zeolite adsorption layer and the activated carbon adsorption layer are both used for filtering the airflow passing through the opening. The filter molecular sieve disclosed by the utility model can effectively absorb smell and harmful substances in oil smoke and smoke, so that an exhaust pipe of a range hood is omitted, and indoor punching is not needed.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil fume filtering, and particularly relates to a filtering molecular sieve and a range hood. Background Art

[0002] Existing range hoods are generally provided with a filter for filtering oil smoke to purify the air. The filter in most range hoods is a steel wire mesh with mesh holes. Some filters are further provided with a layer of filter sponge on the basis of the steel wire mesh to improve the effect of intercepting grease. However, such a filter can often only block the oil smoke, but cannot remove the odor and harmful substances in the smoke. Therefore, existing range hoods generally need to be provided with an exhaust pipe to discharge the smoke to the outside, resulting in the need to drill a hole indoors when installing the range hood so as to place one end of the exhaust pipe outdoors.

[0003] Therefore, the existing technology needs to be improved and developed. Utility Model Content

[0004] The utility model aims to provide a filtering molecular sieve and a range hood, which can effectively absorb oil smoke and odors and harmful substances in the smoke, thereby eliminating the need for an exhaust pipe of the range hood and drilling holes indoors.

[0005] In a first aspect, the utility model provides a filtering molecular sieve, which is applied to a range hood, comprising:

[0006] Positioning frame;

[0007] A zeolite adsorption layer, wherein the zeolite adsorption layer is fixedly connected to the positioning frame;

[0008] An activated carbon adsorption layer, the activated carbon adsorption layer is fixedly connected to the positioning frame and is stacked with the zeolite adsorption layer;

[0009] An outer frame is connected to the positioning frame to enclose the zeolite adsorption layer and the activated carbon adsorption layer between the outer frame and the positioning frame; an opening for airflow is provided between the positioning frame and the outer frame, and the zeolite adsorption layer and the activated carbon adsorption layer are both used to filter the airflow passing through the opening.

[0010] The filtering molecular sieve provided by the utility model, the zeolite adsorption layer and the activated carbon adsorption layer constitute a double-layer molecular sieve to filter oil smoke. Compared with the traditional filter, in addition to being able to intercept grease, it can also remove odors and harmful substances in the smoke to the greatest extent, thereby eliminating the need to set up an exhaust pipe and avoiding drilling holes indoors.

[0011] Furthermore, the zeolite adsorption layer and the activated carbon adsorption layer are both provided with a plurality of honeycomb-shaped air holes.

[0012] The use of honeycomb-shaped air holes can avoid the hollow area being too large to weaken the rigidity of the zeolite adsorption layer and the activated carbon adsorption layer, thereby ensuring that the zeolite adsorption layer and the activated carbon adsorption layer have a certain compressive strength.

[0013] Furthermore, the positioning frame is provided with a plurality of positioning pins; the outer frame is provided with a plurality of positioning holes; each of the positioning pins passes through the zeolite adsorption layer and the activated carbon adsorption layer and is inserted into a corresponding one of the positioning holes; a first magnet is fixedly provided in the positioning hole, and the first magnet is magnetically connected to the positioning pin so that the positioning frame is fixedly connected to the outer frame.

[0014] Avoid the air permeability holes between the zeolite adsorption layer and the activated carbon adsorption layer from blocking each other due to misalignment, thereby affecting the filtering and purification effect.

[0015] Furthermore, a plurality of finger grooves are provided at the center of the positioning frame, and the finger grooves serve as gripping points for fingers to grip the positioning frame so as to facilitate pulling the positioning frame out of the outer frame.

[0016] This is helpful for the user to apply force to the positioning frame, thereby facilitating the user to separate the positioning frame from the outer frame.

[0017] Furthermore, the outer frame is provided with a groove space for accommodating the zeolite adsorption layer and the activated carbon adsorption layer, one of the corners of the groove space is provided with a first chamfer, and one of the corners of the zeolite adsorption layer and the activated carbon adsorption layer is provided with a second chamfer, the first chamfer is matched with the second chamfer and is used to position the zeolite adsorption layer and the activated carbon adsorption layer in the groove space.

[0018] Furthermore, an L-shaped groove is provided on the side of the outer frame, and the L-shaped groove is used for snap connection with an external device or tool.

[0019] In a second aspect, the range hood provided by the utility model comprises the above-mentioned filtering molecular sieve and a range hood body, wherein the filtering molecular sieve is connected to the range hood body in a detachable manner; an L-shaped groove is provided on the side of the outer frame of the filtering molecular sieve.

[0020] The filter molecular sieve is detachably connected to the range hood body to facilitate users to install and remove the filter molecular sieve, thereby making cleaning and replacement more convenient, greatly improving the convenience of overall assembly, and better meeting the actual needs of users.

[0021] Furthermore, the range hood body is provided with a hook, and the hook can be buckled and connected with the L-shaped groove to fix the filtering molecular sieve on the range hood body.

[0022] Furthermore, the range hood body is provided with two parallel slide grooves, and the filter molecular sieve can be inserted between the two slide grooves and connected to the L-shaped groove by a tool buckle to assist in driving the filter molecular sieve to move along the extension direction of the slide groove.

[0023] Furthermore, the range hood body is provided with an exhaust port, and the inner side surface of the exhaust port is provided with an elastic protrusion, and the elastic protrusion can be embedded in the L-shaped groove so that the filtering molecular sieve is fixedly installed in the exhaust port.

[0024] As can be seen from the above, the filtering molecular sieve of the utility model is provided with a double-layer molecular sieve, in which the zeolite adsorption layer is used to treat polar pollutants in the flue gas, and the activated carbon adsorption layer is used to treat non-polar pollutants in the flue gas. The combination of the two can block oil smoke and remove odors and harmful substances to the greatest extent. The filtered flue gas does not need to be discharged outdoors, thereby eliminating the need to set up an exhaust pipe and avoiding drilling holes indoors.

[0025] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the embodiments of the utility model. The purpose and other advantages of the utility model can be achieved and obtained by the structures specifically pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a filtering molecular sieve provided in an embodiment of the utility model.

[0027] Figure 2 An exploded view of a filtering molecular sieve provided in an embodiment of the utility model.

[0028] Figure 3 It is a structural schematic diagram of the positioning frame in the embodiment of the utility model.

[0029] Figure 4 It is a schematic diagram of the structure of the outer frame in the embodiment of the utility model.

[0030] Figure 5 It is a partial cross-sectional view of the outer frame in the embodiment of the utility model.

[0031] Figure 6 A schematic diagram of a range hood provided by an embodiment of the utility model in actual application.

[0032] Figure 7 This is a first assembly diagram of the filter molecular sieve and the range hood body in the embodiment of the utility model.

[0033] Figure 8It is a schematic structural diagram of a range hood after the filter molecular sieve and the range hood body are assembled in a first assembly manner in an embodiment of the utility model.

[0034] Fig. 9 This is a second assembly diagram of the filter molecular sieve and the range hood body in the embodiment of the utility model.

[0035] Fig.10 It is a structural schematic diagram of a range hood after the filter molecular sieve and the range hood body are assembled in the second assembly mode in an embodiment of the utility model.

[0036] Fig.11 It is a schematic diagram of the structure of the tool in the embodiment of the utility model.

[0037] Fig.12 This is a third assembly diagram of the filter molecular sieve and the range hood body in the embodiment of the utility model.

[0038] Fig.13 It is a schematic structural diagram of a range hood after the filter molecular sieve and the range hood body are assembled in the third assembly mode in an embodiment of the utility model.

[0039] Description of labels:

[0040] 100, positioning frame; 110, positioning pin; 120, finger groove; 200, zeolite adsorption layer; 300, activated carbon adsorption layer; 400, outer frame; 410, positioning hole; 420, first magnet; 430, first chamfer; 440, L-shaped groove; 450, second magnet; 500, second chamfer; 600, tool; 700, range hood body; 710, hook; 720, slide groove; 730, elastic protrusion. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0043] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0046] Reference Figure 1 and attached Figure 2 The utility model provides a filtering molecular sieve, which is applied to a range hood, comprising:

[0047] Positioning frame 100;

[0048] The zeolite adsorption layer 200 is fixedly connected to the positioning frame 100;

[0049] An activated carbon adsorption layer 300, the activated carbon adsorption layer 300 is fixedly connected to the positioning frame 100 and is stacked with the zeolite adsorption layer 200;

[0050] The outer frame 400 is connected to the positioning frame 100 to enclose the zeolite adsorption layer 200 and the activated carbon adsorption layer 300 between the outer frame 400 and the positioning frame 100; an opening for airflow is provided between the positioning frame 100 and the outer frame 400, and the zeolite adsorption layer 200 and the activated carbon adsorption layer 300 are both used to filter the airflow passing through the opening.

[0051] In this embodiment, the zeolite adsorption layer 200 and the activated carbon adsorption layer 300 are stacked and fixedly connected to the positioning frame 100 to form a whole with the positioning frame 100. Specifically, the zeolite adsorption layer 200, the activated carbon adsorption layer 300 and the positioning frame 100 can be fixedly connected by bonding, snap connection, screw connection, etc.

[0052] The outer frame 400 can be fixedly connected to the positioning frame 100 as a whole, or can be set in a detachable form. When the outer frame 400 is detachably connected to the positioning frame 100, it is convenient for users to clean or replace the zeolite adsorption layer 200 and the activated carbon adsorption layer 300.

[0053] In actual applications, the filtering molecular sieve is arranged at the exhaust port of the range hood. The oil smoke is discharged from the exhaust port and passes through the opening, and then filtered twice by the zeolite adsorption layer 200 and the activated carbon adsorption layer 300. It can not only block the grease in the oil smoke, but also remove the odor and harmful substances in the smoke (such as sulfur dioxide, ammonia, ozone, etc.). As a result, the filtered gas can be discharged directly indoors without being discharged outdoors, thereby eliminating the need to set up an exhaust pipe. Therefore, there is no need to drill holes indoors, which reduces the difficulty of installing the range hood and can maintain the integrity of the indoor walls.

[0054] It should be noted that the zeolite adsorption layer 200 is used to treat polar pollutants, while the activated carbon adsorption layer 300 is used to treat non-polar pollutants. The combination of the two can purify oil smoke more comprehensively. The zeolite adsorption layer 200 and the activated carbon adsorption layer 300 achieve the effect of eliminating harmful substances by decomposition, catalysis, etc., which belongs to the prior art and will not be repeated here.

[0055] In certain embodiments, referring to Figure 1 and attached Figure 2 The zeolite adsorption layer 200 and the activated carbon adsorption layer 300 are both provided with a plurality of honeycomb-shaped air permeable holes.

[0056] In the present embodiment, the use of honeycomb-shaped air holes can avoid the hollow area being too large to weaken the rigidity of the zeolite adsorption layer 200 and the activated carbon adsorption layer 300, ensuring that the zeolite adsorption layer 200 and the activated carbon adsorption layer 300 have a certain compressive strength, and the honeycomb-shaped air holes can increase the contact area between the zeolite adsorption layer 200 and the activated carbon adsorption layer 300 and the oil smoke, thereby filtering and purifying the oil smoke more efficiently.

[0057] In certain embodiments, referring to Figure 3 , Attachment Figure 4 and attached Figure 5 The positioning frame 100 is provided with a plurality of positioning pins 110; the outer frame 400 is provided with a plurality of positioning holes 410; each positioning pin 110 passes through the zeolite adsorption layer 200 and the activated carbon adsorption layer 300 and is inserted into a corresponding positioning hole 410; a first magnet 420 is fixedly provided in the positioning hole 410, and the first magnet 420 is magnetically connected to the positioning pin 110 so that the positioning frame 100 is fixedly connected to the outer frame 400.

[0058] In this embodiment, when installing the zeolite adsorption layer 200 and the activated carbon adsorption layer 300, the positioning pins 110 can be used to locate the positions of the zeolite adsorption layer 200 and the activated carbon adsorption layer 300, thereby preventing the air holes between the zeolite adsorption layer 200 and the activated carbon adsorption layer 300 from blocking each other due to misalignment, thereby affecting the filtering and purification effect.

[0059] Furthermore, a positioning hole 410 corresponding to the positioning pin 110 is provided on the outer frame 400 , so that the positioning frame 100 and the outer frame 400 can be accurately assembled through the cooperation between the positioning pin 110 and the positioning hole 410 .

[0060] Furthermore, a first magnet 420 is provided in the positioning hole 410 for adsorbing the corresponding positioning pin 110, thereby fixing the positioning frame 100 on the outer frame 400 by magnetic force. In actual application, the user only needs to apply a certain force to separate the positioning frame 100 and the outer frame 400, which is convenient to operate.

[0061] In certain embodiments, referring to Figure 3 A plurality of finger grooves 120 are provided at the center of the positioning frame 100. The finger grooves 120 serve as gripping points for fingers to hold the positioning frame 100 so as to facilitate the positioning frame 100 to be pulled out of the outer frame 400. The finger grooves 120 are adapted to the shape of fingers, which is beneficial for the user to apply force to the positioning frame 100, thereby facilitating the user to separate the positioning frame 100 from the outer frame 400.

[0062] In certain embodiments, referring to Figure 2 and attached Figure 4 The outer frame 400 is provided with a groove space for accommodating the zeolite adsorption layer 200 and the activated carbon adsorption layer 300, and a first chamfer 430 is provided at one of the corners of the groove space, and a second chamfer 500 is provided at one of the corners of the zeolite adsorption layer 200 and the activated carbon adsorption layer 300, and the first chamfer 430 is adapted to the second chamfer 500 and is used to position the zeolite adsorption layer 200 and the activated carbon adsorption layer 300 in the groove space.

[0063] In this embodiment, the mutually adapted first chamfer 430 and second chamfer 500 play a fool-proof role, making it easy for the user to accurately align the positioning pin 110 with the positioning hole 410, ensuring that the user installs the positioning frame 100 and the outer frame 400 in the correct manner.

[0064] In certain embodiments, referring to Figure 5 An L-shaped groove 440 is provided on the side of the outer frame 400, and the L-shaped groove 440 is used for snap connection with an external device or tool 600.

[0065] In this embodiment, the filter molecular sieve generally needs to be fixed on the range hood. In order to facilitate the installation of the filter molecular sieve, an L-shaped groove 440 is provided on the outer frame 400 to provide a fulcrum so that the filter molecular sieve can be connected to the range hood or a tool in a snap-on connection, thereby making it convenient for users to install the filter molecular sieve on the range hood.

[0066] Reference Figure 6The utility model provides a range hood, comprising the filter molecular sieve and the range hood body 700 in the above embodiment, the filter molecular sieve is connected to the range hood body 700 by a detachable connection; an L-shaped groove 440 is provided on the side of the outer frame 400 of the filter molecular sieve, and the filter molecular sieve is installed in a detachable connection manner, which is convenient for the user to install and remove the filter molecular sieve from the range hood, and further convenient for the user to clean or replace the filter molecular sieve.

[0067] In this embodiment, the filter molecular sieve is detachably connected to the range hood body to facilitate users to install and remove the filter molecular sieve, thereby making cleaning and replacement more convenient, greatly improving the convenience of overall assembly, and better meeting the actual needs of users.

[0068] In actual application, the air inlet of the range hood body 700 is provided with a steel mesh for filtering most of the grease, and the filter molecular sieve is installed at the exhaust port of the range hood body 700, and the filter molecular sieve is used to further filter the remaining grease, odor and harmful substances in the smoke. Compared with setting the filter molecular sieve at the air inlet of the range hood body 700, since less grease needs to be filtered at the exhaust port, the filter molecular sieve is less susceptible to erosion by grease and oily dirt, which greatly increases its service life.

[0069] In certain embodiments, referring to Figure 7 and attached Figure 8 The range hood body 700 is provided with a hook 710 , which can be snap-connected with the L-shaped groove 440 so that the filter molecular sieve is fixedly installed on the range hood body 700 .

[0070] In this embodiment, when the exhaust port of the range hood is arranged on the side wall, the filter molecular sieve can be installed on the range hood in a side-hanging manner by arranging a hook 710 on the side wall and then snapping the hook 710 into the L-shaped groove 440 .

[0071] In certain embodiments, referring to Figure 5 A second magnet 450 is disposed in the L-shaped groove. When the hook 710 is snap-connected in the L-shaped groove 440, the second magnet 450 is also magnetically connected to the hook 710, further strengthening the fixing force between the filter molecular sieve and the range hood to prevent the filter molecular sieve from accidentally detaching from the range hood.

[0072] In certain embodiments, referring to Fig. 9 , Attachment Fig.10 and attached Fig.11 The range hood body 700 is provided with two parallel slide grooves 720 , and the filter molecular sieve can be inserted between the two slide grooves 720 and the tool 600 is snap-connected in the L-shaped groove 440 to assist in driving the filter molecular sieve to move along the extension direction of the slide groove 720 .

[0073] In this embodiment, when the exhaust port of the range hood is arranged on the side wall, two parallel slide grooves 720 can also be arranged on the side wall, and then the filter molecular sieve is slidably connected between the two slide grooves 720 to achieve the installation of the filter molecular sieve on the range hood in a side-hanging manner.

[0074] Furthermore, in order to facilitate users to install and disassemble the filter molecular sieve, the tool 600 with a hook structure is snap-connected in the L-shaped groove 440, so that the filter molecular sieve can be more easily dragged along the extension direction of the slide groove 720, thereby facilitating the extraction of the filter molecular sieve from the slide groove 720 or the pushing of the filter molecular sieve into the slide groove 720.

[0075] In certain embodiments, referring to Figure 5 A second magnet 450 is provided in the L-shaped groove. When the tool 600 is snap-connected in the L-shaped groove 440, the second magnet 450 is also magnetically connected to the tool 600, further strengthening the fixing force between the filter molecular sieve and the tool 600, thereby preventing the filter molecular sieve from accidentally detaching from the tool 600 when the user uses the tool 600 to manipulate the filter molecular sieve.

[0076] In certain embodiments, referring to Fig.12 and attached Fig.13 The range hood body 700 is provided with an exhaust port, and an elastic protrusion 730 is provided on the inner side of the exhaust port. The elastic protrusion 730 can be embedded in the L-shaped groove 440 to fix the filter molecular sieve in the exhaust port.

[0077] In this embodiment, when the exhaust port of the range hood is set at the top, an elastic protrusion 730 can be provided on the side wall of the exhaust port. When the filter molecular sieve is installed in the exhaust port, the elastic protrusion 730 can be correspondingly embedded in the L-shaped groove 440, thereby using friction to fix the filter molecular sieve on the range hood.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0079] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A filtering molecular sieve, applied to a range hood, characterized in that: include: Positioning frame (100); A zeolite adsorption layer (200), the zeolite adsorption layer (200) being fixedly connected to the positioning frame (100); An activated carbon adsorption layer (300), the activated carbon adsorption layer (300) being fixedly connected to the positioning frame (100) and stacked with the zeolite adsorption layer (200); An outer frame (400) is connected to the positioning frame (100) so as to enclose the zeolite adsorption layer (200) and the activated carbon adsorption layer (300) between the outer frame (400) and the positioning frame (100); an opening for airflow to flow through is provided between the positioning frame (100) and the outer frame (400), and the zeolite adsorption layer (200) and the activated carbon adsorption layer (300) are both used to filter the airflow passing through the opening.

2. The filtering molecular sieve according to claim 1, characterized in that: The zeolite adsorption layer (200) and the activated carbon adsorption layer (300) are both provided with a plurality of honeycomb-shaped air permeable holes.

3. The filtering molecular sieve according to claim 1, characterized in that: The positioning frame (100) is provided with a plurality of positioning pins (110); the outer frame (400) is provided with a plurality of positioning holes (410); each of the positioning pins (110) passes through the zeolite adsorption layer (200) and the activated carbon adsorption layer (300) and is inserted into a corresponding one of the positioning holes (410); a first magnet (420) is fixedly arranged in the positioning hole (410), and the first magnet (420) is magnetically connected to the positioning pin (110) so that the positioning frame (100) is fixedly connected to the outer frame (400).

4. The filtering molecular sieve according to claim 3, characterized in that: A plurality of finger grooves (120) are provided at the center of the positioning frame (100), and the finger grooves (120) serve as gripping points for fingers to grip the positioning frame (100) so as to facilitate pulling the positioning frame (100) out of the outer frame (400).

5. The filtering molecular sieve according to claim 1, characterized in that: The outer frame (400) is provided with a groove space for accommodating the zeolite adsorption layer (200) and the activated carbon adsorption layer (300); a first chamfer (430) is provided at one corner of the groove space; a second chamfer (500) is provided at one corner of the zeolite adsorption layer (200) and the activated carbon adsorption layer (300); the first chamfer (430) is matched with the second chamfer (500) and is used to position the zeolite adsorption layer (200) and the activated carbon adsorption layer (300) in the groove space.

6. The filtering molecular sieve according to claim 1, characterized in that: An L-shaped groove (440) is provided on the side of the outer frame (400), and the L-shaped groove (440) is used for snap-fit ​​connection with an external device or tool (600).

7. A range hood, characterized in that: It comprises a filtering molecular sieve as claimed in any one of claims 1 to 5 and a range hood body (700), wherein the filtering molecular sieve is connected to the range hood body (700) in a detachable manner; and an L-shaped groove (440) is provided on the side of the outer frame (400) of the filtering molecular sieve.

8. The range hood according to claim 7, characterized in that: The range hood body (700) is provided with a hook (710), and the hook (710) can be snap-connected with the L-shaped groove (440) so that the filtering molecular sieve is fixedly mounted on the range hood body (700).

9. The range hood according to claim 7, characterized in that: The range hood body (700) is provided with two parallel slide grooves (720), and the filter molecular sieve can be inserted between the two slide grooves (720) and the tool (600) is snap-connected in the L-shaped groove (440) to assist in driving the filter molecular sieve to move along the extension direction of the slide groove (720).

10. The range hood according to claim 7, characterized in that: The range hood body (700) is provided with an exhaust port, and an elastic protrusion (730) is provided on the inner side surface of the exhaust port. The elastic protrusion (730) can be embedded in the L-shaped groove (440) so that the filtering molecular sieve is fixedly installed in the exhaust port.

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