Filter installation structure, fan assembly, range hood

Abstract

The present invention provides a filter installation structure, a fan assembly, and a range hood. A filter installation structure includes a motor and a filter assembly detachably mounted on the motor shaft of the motor, and further includes: a first magnetic component, which is arranged on the filter assembly; and a second magnetic component, which is arranged on the motor shaft, wherein the first magnetic component and the second magnetic component are arranged opposite to each other, and after the filter assembly reaches a preset installation position, the first magnetic component is located below the second magnetic component and is in a state of mutual repulsion of the same poles; and a limiting component, which is arranged on the motor shaft, and the filter assembly abuts against the limiting component under the action of mutual repulsion. The filter installation structure in the present invention utilizes the mutual repulsion between magnetic poles of the same name to facilitate the disassembly and assembly of the filter assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a filter installation structure, a fan assembly, and a range hood. Background Art

[0002] As a major category of kitchen appliances, range hoods have been widely installed and used. The main function of a range hood is to collect the fumes generated during the user's cooking process. Due to the characteristics of fumes, oil stains easily adhere to the filter, requiring users to clean the filter frequently.

[0003] The cleaning process of the filter in the prior art is as follows: unscrew the screws that fix the filter, soak the removed filter in warm water with a neutral detergent for 5-10 minutes, clean the dirt in the pores of the filter with a soft plastic brush, wipe it dry with a dry rag, and install the filter as it was before removal.

[0004] However, the above filter is fixed by screws, which has the following problems:

[0005] On the one hand, after the range hood is installed and fixed, due to the installation height of the range hood, the user usually needs to bend over when fixing the screws, and the operating posture lacks comfort. In addition, the process of fixing the screws requires the user to hold the screwdriver in one hand and the filter in the other hand, and also needs to find a way to operate the screws to the corresponding installation holes. Without the assistance of others, the operation is laborious.

[0006] On the other hand, the oil smoke emitted by cooking is a large amount of thermal oxidation decomposition products produced by cooking oil and food under high temperature conditions. When cooking, the oil is heated. When the temperature reaches the smoking point of cooking oil, 170°C, blue smoke appears at the initial decomposition. As the temperature continues to rise, the decomposition speed accelerates. When the temperature reaches 250°C, a large amount of oil smoke appears, accompanied by a pungent smell. The particle size of the oil smoke is 0.01 microns to 0.3 microns. As above, the particles of oil smoke are small enough to enter the screw hole through the gap between the screw and the screw hole, and gradually condense in the gap between the two, thereby affecting the normal locking of the screw and making it difficult to disassemble and assemble the screw. Summary of the invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defect of inconvenient filter assembly and disassembly in the prior art, thereby providing a filter installation structure, a fan assembly, and a range hood.

[0008] In order to solve the above problems, the present invention provides a filter installation structure, including a motor and a filter assembly detachably installed on the motor shaft of the motor, and also including: a first magnetic part, arranged on the filter assembly; and a second magnetic part arranged on the motor shaft, the first magnetic part and the second magnetic part are arranged opposite to each other, and after the filter assembly reaches a preset installation position, the first magnetic part is located below the second magnetic part and is in a state of mutual repulsion of the same poles; a limiting part, arranged on the motor shaft, and the filter assembly abuts against the limiting part under the action of the mutual repulsion force.

[0009] Furthermore, the first magnetic member and the second magnetic member are both annular magnets.

[0010] Furthermore, the second magnetic member is arranged at the shaft end of the motor shaft.

[0011] Furthermore, the central aperture of the first magnetic component is larger than the maximum outer diameter of the second magnetic component.

[0012] Furthermore, the filter assembly includes: a filter bracket and a filter installed on the filter bracket and coaxially arranged with the filter bracket, and the first magnetic member is arranged on the filter bracket.

[0013] Furthermore, the filter support is constructed as a hollow shaft component, having a large shaft diameter portion for mounting the filter and a small shaft diameter portion for sleeved on the motor shaft.

[0014] Furthermore, an overlapping edge is formed on the outer peripheral surface of the large shaft diameter portion, and the filter is arranged on the overlapping edge.

[0015] Furthermore, a first through slot is axially arranged at the large shaft diameter portion, and the first magnetic member is arranged in a region between the first through slot and the motor shaft.

[0016] Furthermore, a second through slot is axially arranged at the small shaft diameter portion, and a size of the second through slot is adapted to the motor shaft.

[0017] Furthermore, a plurality of limiting grooves are provided at one end of the small-diameter shaft portion away from the filter screen, and the limiting member is clamped in the limiting grooves.

[0018] Furthermore, the limiting member is a limiting protrusion arranged on the circumferential surface of the motor shaft.

[0019] The present invention also provides a fan assembly, comprising any one of the filter installation structures described above.

[0020] The present invention also provides a range hood comprising any of the above-mentioned fan assemblies.

[0021] The technical solution of the present invention has the following advantages:

[0022] 1. The filter installation structure in the present invention includes a motor and a filter assembly detachably mounted on the motor shaft of the motor, and also includes: a first magnetic component, which is arranged on the filter assembly; and a second magnetic component, which is arranged on the motor shaft, wherein the first magnetic component and the second magnetic component are arranged opposite to each other, and after the filter assembly reaches a preset installation position, the first magnetic component is located below the second magnetic component and is in a state of mutual repulsion of the same poles; a limiting component, which is arranged on the motor shaft, and the filter assembly abuts against the limiting component under the action of the mutual repulsion force.

[0023] The filter assembly in the present invention has the function of separating oil and dirt, and a first magnetic part is arranged on it. When the user installs it, the first magnetic part moves to the bottom of the second magnetic part under the action of an external force, so that the magnetic poles of the opposite surfaces of the two magnetic parts are the same, so as to generate a mutual repulsion force, and the filter assembly is abutted against the limiter by using the generated mutual repulsion force to achieve fixed installation of the filter assembly. From the above discussion, it can be found that the filter installation method in the present invention eliminates the use of fasteners such as screws, reduces the corresponding installation steps, and facilitates the disassembly and assembly process of the filter assembly.

[0024] 2. In the filter installation structure of the present invention, the first magnetic member and the second magnetic member are both annular magnets, which are commonly used structural members, are easy to customize and process, and have low cost.

[0025] 3. In the filter installation structure of the present invention, the second magnetic component is arranged at the shaft end of the motor shaft, and the initial position of the first magnetic component is located above the second magnetic component. When installing the filter assembly, the user needs to first overcome the mutual repulsion between the first magnetic component and the second magnetic component, press the first magnetic component to the bottom of the second magnetic component, and set the second magnetic component at the shaft end. Compared with other positions on the motor shaft, the user is closer to the second magnetic component and has more space for operation, which makes the installation more convenient.

[0026] 4. In the filter installation structure of the present invention, the center hole diameter of the first magnetic component is larger than the maximum outer diameter of the second magnetic component. During the installation of the filter assembly, as described above, the first magnetic component needs to be pressed under the second magnetic component. Since both the first magnetic component and the second magnetic component are annular components, during the installation of the present invention, the second magnetic component passes through the center hole of the first magnetic component. The center hole diameter of the first magnetic component is larger than the maximum outer diameter of the second magnetic component, which can reduce the difficulty of aligning the center holes of the two magnetic components during the installation process and facilitate installation.

[0027] 5. In the filter installation structure of the present invention, a first through slot is arranged axially at the large shaft diameter portion, and the first magnetic member is arranged in the area between the first through slot and the motor shaft. The material of the magnetic member determines its fragile characteristics, and the first magnetic member is arranged in the first through slot, which can provide good protection for the first magnetic member.

[0028] 6. In the filter installation structure of the present invention, a plurality of limit grooves are provided at one end of the small shaft diameter portion away from the filter, and the limit member is clamped in the limit groove. The setting of the above limit grooves has the following two functions: first, under the action of the mutual repulsive force, the filter assembly abuts against the limit member, and the limit grooves and the limit member cooperate with each other to provide stable support for the filter assembly; second, due to the mutual repulsive force of the magnetic member, there is instability in the filter assembly during rotation, and the limit grooves can better fix the filter assembly on the motor shaft to prevent it from falling off due to the centrifugal force during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the structure of the filter screen installation structure in Embodiment 1 provided by the present invention;

[0031] Figure 2 for Figure 1 A in the enlarged view;

[0032] Figure 3 A schematic diagram of the structure of the filter support in Example 1 provided by the present invention;

[0033] Figure 4 A schematic structural diagram of the first magnetic member in Example 1 provided by the present invention;

[0034] Figure 5 This is a schematic diagram of the magnetic pole distribution state in Example 1 provided by the present invention.

[0035] Description of reference numerals:

[0036] 1-Filter;

[0037] 2-motor; 21-motor shaft;

[0038] 3- first magnetic member;

[0039] 4- second magnetic member;

[0040] 5-Limiting parts;

[0041] 6-filter bracket; 61-large shaft diameter portion; 62-small shaft diameter portion; 63-lap edge; 64-first through slot; 65-second through slot; 66-limiting slot;

[0042] 7- Fan. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] Example 1

[0048] Figures 1 to 5As shown, a filter installation structure provided in this embodiment includes a motor 2 and a filter assembly detachably mounted on the motor shaft 21 of the motor 2, and also includes: a first magnetic member 3, which is arranged on the filter assembly; and a second magnetic member 4, which is arranged on the motor shaft 21, wherein the first magnetic member 3 and the second magnetic member 4 are arranged opposite to each other, and after the filter assembly reaches the preset installation position, the first magnetic member 3 is located below the second magnetic member 4 and is in a state of mutual repulsion of the same pole; and a stopper 5, which is arranged on the motor shaft 21, and the filter assembly abuts against the stopper 5 under the action of mutual repulsion. The filter assembly in this embodiment has the function of separating oil and dirt, and is provided with a first magnetic member 3. When the user installs it, the first magnetic member 3 moves to the bottom of the second magnetic member 4 under the action of an external force, so that the opposite magnetic poles of the two magnetic members are the same, so as to generate mutual repulsion, and the filter assembly abuts against the stopper 5 by utilizing the generated mutual repulsion, so as to achieve fixed installation of the filter assembly. From the above discussion, it can be found that the filter installation method in this embodiment eliminates the use of fasteners such as screws, reduces the corresponding installation steps, and facilitates the disassembly and assembly process of the filter assembly.

[0049] It should be noted that the filter installation structure in this embodiment is applied to the fan assembly in the range hood, so that the filter for filtering oil smoke can be quickly installed in the above-mentioned fan assembly. Figure 1 As shown in FIG. , the implementation environment of the filter installation structure is schematically shown, which includes a fan 7 for generating an adsorption force for adsorbing oil smoke.

[0050] Of course, the filter installation structure in this embodiment is not only applicable to range hood-related products, but also to some fan wheel installation structures.

[0051] like Figure 4 As shown, the first magnetic member 3 and the second magnetic member 4 in this embodiment are both annular magnets. Annular magnets are commonly used structural parts, which are easy to customize and process, and have low cost.

[0052] In some other embodiments, the first magnetic member 3 and the second magnetic member 4 may also be in other shapes, such as square magnets, etc., which can be selected by designers for the purpose of facilitating design and development according to the needs of the specific structural installation environment.

[0053] In some other implementations, the number of the first magnetic component 3 and the second magnetic component 4 can be multiple, which can improve the flexibility of the distribution of the magnetic components.

[0054] like Figure 1As shown, the second magnetic component 4 in this embodiment is arranged at the shaft end of the motor shaft, and a small diameter shaft segment is cut at the shaft end of the motor shaft. The diameter of the annular center hole of the second magnetic component 4 is adapted to the outer diameter of the above-mentioned small diameter shaft segment. The initial position of the first magnetic component 3 is located above the second magnetic component 4. During the installation of the filter assembly, the user needs to overcome the mutual repulsion between the first magnetic component 3 and the second magnetic component 4, press the first magnetic component 3 to the bottom of the second magnetic component 4, and arrange the second magnetic component 4 at the shaft end. Compared with other positions on the motor shaft, the user is closer to the second magnetic component 4, and there is more space for operation, which makes the installation more convenient.

[0055] In this embodiment, glue is coated on the outer peripheral surface of the above-mentioned small-diameter shaft segment to fix the second magnetic member 4.

[0056] In some other embodiments, the diameter of the annular center hole of the second magnetic component 4 and the outer diameter of the shaft segment with a small diameter are fixedly connected by interference fit.

[0057] Furthermore, the central hole diameter of the first magnetic member 3 is larger than the maximum outer diameter of the second magnetic member 4. Since both the first magnetic member 3 and the second magnetic member 4 are annular members, during the installation process, the second magnetic member 4 passes through the central hole of the first magnetic member 3, and the central hole diameter of the first magnetic member 3 is larger than the maximum outer diameter of the second magnetic member 4, which can reduce the difficulty of aligning the central holes of the two magnetic members during the installation process, and facilitate installation.

[0058] The filter assembly in this embodiment includes: a filter support 6 and a filter 1 installed on the filter support 6 and coaxially arranged with the filter support. The first magnetic member 3 is arranged on the filter support 6.

[0059] like Figure 3 As shown, the filter bracket 6 is constructed as a hollow shaft component, having a large shaft diameter portion 61 for mounting the filter 1 and a small shaft diameter portion 62 for sleeved on the motor shaft, an overlapping edge 63 is formed on the outer peripheral surface of the large shaft diameter portion 61, and a threaded hole is processed on the overlapping edge 61, and the filter 1 is locked to the threaded hole of the overlapping edge 63 by screws.

[0060] A first through slot 64 is axially arranged at the large shaft diameter portion 61, and the first magnetic member 3 is arranged in the area between the first through slot 64 and the motor shaft. In this embodiment, the first magnetic member 3 and the first through slot 64 are assembled in a manner that the central axis is aligned, and glue is applied on the contact surfaces of the two to achieve the fixation of the two. Furthermore, the material of the magnetic member determines its fragile characteristics, and the first magnetic member 3 is arranged in the first through slot 64, which can play a good protective role for the first magnetic member 3.

[0061] In this embodiment, a second through slot 65 is axially arranged at the small diameter portion 62, and the size of the second through slot 65 is adapted to the motor shaft. The first adaptation here refers to a gap between the two, which is generally 0.05-0.2. The gap used in this embodiment is 0.2.

[0062] Furthermore, in order to facilitate the second through-slot 65 to be better sleeved on the motor shaft, lubricating oil or grease is coated on the motor shaft or inside the second through-slot 65 to reduce the friction between the two when they are in contact.

[0063] Furthermore, a plurality of limiting grooves 66 are provided at one end of the small diameter portion 62 away from the filter 1, 6 in the present embodiment, and the limiting grooves 66 are in the shape of a semicircular notch, and the limiting member 5 is snapped into the limiting grooves 66, which have the following two functions: first, under the action of the mutual repulsive force, the filter assembly abuts against the limiting member 5, and the limiting grooves 66 cooperate with the limiting member 5 to provide stable support for the filter assembly; second, due to the instability caused by the mutual repulsive force of the magnetic member during the rotation of the filter assembly, the limiting grooves 66 can better fix the filter assembly on the motor shaft to prevent it from falling off due to the centrifugal force during the rotation.

[0064] In this embodiment, the limiting member 5 is a limiting protrusion arranged on the circumferential surface of the motor shaft, specifically a limiting pin structure installed on the motor shaft.

[0065] Example 2

[0066] This embodiment provides a fan assembly, including the filter installation structure described in Embodiment 1, and has all its technical advantages, which will not be described one by one here.

[0067] Example 3

[0068] This embodiment provides a range hood, including the fan assembly described in Embodiment 2, and having all its technical advantages, which will not be described one by one here.

[0069] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A filter screen installation structure, comprising a motor (2) and a filter screen assembly detachably mounted on a motor shaft (21) of the motor (2), characterized in that: Also includes: A first magnetic member (3) is arranged on the filter assembly; and a second magnetic member (4) arranged on the motor shaft (21), the first magnetic member (3) and the second magnetic member (4) being arranged opposite to each other, and after the filter assembly reaches a preset installation position, the first magnetic member (3) is located below the second magnetic member (4) and is in a state of mutual repulsion of the same poles; A stopper (5) is arranged on the motor shaft (21), and the filter assembly abuts against the stopper (5) under the action of a mutual repulsive force; The filter assembly comprises: a filter support (6) and a filter (1) mounted on the filter support (6) and arranged coaxially with the filter support (6); the first magnetic member (3) is arranged on the filter support (6); the filter support (6) is constructed as a hollow shaft component, having a large shaft diameter portion (61) for mounting the filter (1) and a small shaft diameter portion (62) for sleeve-engaging the motor shaft; A first through slot (64) is axially arranged at the large shaft diameter portion (61), and the first magnetic member (3) is arranged in a region between the first through slot (64) and the motor shaft; a second through slot (65) is axially arranged at the small shaft diameter portion (62), and the size of the second through slot (65) is adapted to the motor shaft; The second magnetic component (4) is arranged at the shaft end of the motor shaft; during the installation process, the second magnetic component (4) passes through the center hole of the first magnetic component (3).

2. The filter installation structure according to claim 1, characterized in that: The first magnetic component (3) and the second magnetic component (4) are both annular magnets.

3. The filter screen installation structure according to any one of claims 1 or 2, characterized in that: The second magnetic member (4) is arranged at the shaft end of the motor shaft.

4. The filter screen installation structure according to claim 3, characterized in that: The central aperture of the first magnetic component (3) is larger than the maximum outer diameter of the second magnetic component (4).

5. The filter screen installation structure according to claim 1, characterized in that: An overlapping edge (63) is formed on the outer peripheral surface of the large shaft diameter portion (61), and the filter screen (1) is arranged on the overlapping edge (63).

6. The filter screen installation structure according to claim 1, characterized in that: A plurality of limiting grooves (66) are provided at one end of the small-diameter shaft portion (62) away from the filter screen (1), and the limiting member (5) is snap-fitted into the limiting grooves (66).

7. The filter screen installation structure according to claim 1, characterized in that: The limiting member (5) is a limiting protrusion arranged on the peripheral surface of the motor shaft.

8. A fan assembly, characterized in that: include: The filter installation structure described in any one of claims 1-7.

9. A range hood, characterized in that: include: The fan assembly as claimed in claim 8.

Images