Filtering device

Abstract

The utility model discloses a filtering device which is used for being installed in an installation cavity of an air filtering system and comprises a frame, a supporting assembly and a filtering piece, and the frame comprises two first frame units which are oppositely arranged up and down. An accommodating space as well as an air inlet and an air outlet which are communicated with the accommodating space are formed between the two first frame units; the supporting assembly is detachably connected to the two first frame units and stretches across the air inlet and / or the air outlet. The filter part is provided with an upper end, a lower end and a folded medium extending between the upper end and the lower end, and the upper end and the lower end of the filter part are close to each other or far away from each other, so that the filter part is converted between a storage state and a use state; when the filtering pieces are in the use state, the upper end and the lower end of one filtering piece are slidably connected to the two first frame units which are opposite up and down correspondingly; when the filtering pieces are in the storage state, the at least two filtering pieces are arranged in the containing space in a stacked mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter device technical field especially relates to a filter device. BACKGROUND

[0002] Research shows that human long time is in healthy air environment, to the body is 100 benefits and no harm, but if long-term in air pollution serious situation, harm the physical and mental health, therefore, modern people pay more and more attention to the pros and cons of air quality, in order to breathe high quality air, people generally use air purifier, fresh air machine and other air filtration system to guarantee air quality.

[0003] In the existing product HVAC filter, usually the two mounting plates of the upper and lower parts of the folded filter are connected to the sliding mounting bracket, and the filter core is fixed on the paper bracket, such as lennox x6670 filter and honeywell FC100A1037 filter, to constitute a stable filter assembly, and the sliding mounting bracket or the paper bracket is connected to the mounting cavity of the air filtration system through the slide rail. The sliding mounting bracket or the paper bracket can limit the distance between the two mounting plates of the upper and lower parts of the folded filter, so that the folded filter is in an unfolded state, the folded filter structure is stable, and the stability of the mounting structure is effectively guaranteed, thereby guaranteeing the filtering effect of the folded filter. However, since the sliding mounting bracket is part of the air filtration system, the folded filter is usually transported separately during transportation and storage, and cannot be protected by the sliding mounting bracket, and is easily damaged. Even if some merchants provide a sliding mounting bracket when transporting the folded filter, the existing sliding mounting bracket cannot effectively protect the folded filter, and the main body of the folded filter is damaged, which easily affects the filtering effect of the product.

[0004] Therefore, the utility model provides a filter device, which can effectively solve the above problems, has simple structure, stable support, can be installed in the air purifier frame without cooperating with the sliding mounting bracket, and is stable and strong, can provide protection for the folded filter during use, transportation and storage, and guarantee the filtering effect. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of the prior art, the utility model provides a filter device, which has simple structure, stable support, can be installed in the air purifier frame without cooperating with the sliding mounting bracket, and is stable and strong, can provide protection for the folded filter during use, transportation and storage, and guarantee the filtering effect.

[0006] The technical scheme adopted by the utility model to solve its technical problems is:

[0007] A filter device for installation in an installation cavity of an air filter system, comprising:

[0008] a frame comprising two first frame units arranged oppositely in up and down directions, and an air inlet and an air outlet formed between the two first frame units and communicated with the accommodation space;

[0009] a support assembly detachably connected to the two first frame units and crossing the air inlet and / or the air outlet;

[0010] a filter element having an upper end and a lower end and a pleated medium extending between the upper end and the lower end, the upper end and the lower end of the filter element being close to or away from each other to switch the filter element between a storage state and a use state;

[0011] When the filter element is in the use state, the upper end and the lower end of one filter element are respectively slidably connected to two first frame units arranged oppositely in up and down directions; when the filter element is in the storage state, at least two filter elements are arranged in a stacked manner in the accommodation space.

[0012] As an improvement of the utility model, the frame further comprises two second frame units arranged oppositely in left and right directions, and the two second frame units are detachably connected to the two first frame units to form the frame in a substantially rectangular shape.

[0013] As an improvement of the utility model, two strip-shaped first connecting plates are formed along the front and rear two sides of the first frame unit and the second frame unit and extend in a direction towards the filter element, an inner side wall of the first connecting plate is provided with a sliding groove, and two end covers are arranged at the upper and lower ends of the filter element, and the edge of the end cover is inserted into the sliding groove on the first frame unit.

[0014] As an improvement of the utility model, the inner side wall of the first connecting plate is provided with a first protruding block and a second protruding block, and the sliding groove is formed between the first protruding block and the second protruding block.

[0015] As an improvement of the utility model, the edge of the end cover is provided with a first limiting block, and when the edge of the end cover is inserted into the sliding groove, the first limiting block abuts against the end face of the first protruding block and / or the end face of the second protruding block.

[0016] As an improvement of the utility model, the frame further comprises four corner connecting pieces, and the first frame unit and the second frame unit are connected through the corner connecting pieces to form the frame in a substantially rectangular shape.

[0017] As the improvement of the utility model, the first protruding block and the first frame unit and / or the second frame unit form an insertion groove between the surface of the filter piece, the corner connecting piece is provided with an insertion block, and the insertion block is inserted into the insertion groove.

[0018] As the improvement of the utility model, the first protruding block is provided with a second limiting block, and when the insertion block is inserted into the insertion groove, the second limiting block abuts against the inner surface of the insertion block.

[0019] As the improvement of the utility model, the corner connecting piece comprises two second connecting plates which are connected perpendicularly, the two second connecting plates are provided with clamping blocks, the first frame unit and the second frame unit are provided with clamping holes at the end portions, and the clamping blocks are detachably clamped in the clamping holes.

[0020] As the improvement of the utility model, the clamping block is provided with a guide inclined surface, and the guide inclined surface is arranged on the outer side of the clamping block.

[0021] As the improvement of the utility model, the second connecting plate is provided with a through hole in the middle portion, a deformation portion is formed along one side wall of the through hole, a gap is formed between the deformation portion and the other side walls of the through hole, the clamping block is arranged on the upper surface of the deformation portion, and the elastic reset force of the deformation portion drives the clamping block to be clamped in the clamping hole.

[0022] As the improvement of the utility model, the edge of the second connecting plate is provided with an abutting boss, and the abutting boss abuts against the end portion of the first frame unit and / or the second frame unit.

[0023] As the improvement of the utility model, the support assembly is detachably connected to the first connecting plate of the first frame unit.

[0024] As the improvement of the utility model, the first connecting plate of the first frame unit is provided with a first mounting hole, the end portion of the support assembly is provided with a second mounting hole, and the first mounting hole and the second mounting hole are used for allowing a connecting piece to be inserted and used.

[0025] As the improvement of the utility model, the support assembly comprises two support pieces, the middle portions of the two support pieces are rotatably connected, forming an X-shaped support assembly, and the second mounting hole is arranged at the end portion of the support piece.

[0026] As the improvement of the utility model, the first mounting hole comprises a plurality of first mounting holes, and the first mounting holes are arranged at intervals on the second connecting plate.

[0027] As the improvement of the utility model, the first mounting hole is a strip-shaped waist hole.

[0028] As the improvement of the utility model, the corner connecting piece is provided with an indication mark, and the indication mark points to the clamping block.

[0029] As the improvement of the utility model, the end of the plug-in block is provided with a guide camber.

[0030] As the improvement of the utility model, the outer surface of the abutting boss and the outer surface of the first frame unit and / or the second frame unit are substantially in the same plane.

[0031] As the improvement of the utility model, the first frame unit, the second frame unit and the support assembly are all made of hard material.

[0032] The utility model discloses the beneficial effect is: through the setting of above -mentioned structure, when using, the filter piece upper end is slidably connected in the upper first frame unit, and the filter piece lower end is slidably connected in the lower first frame unit, and the support assembly is connected in two first frame units, and the first frame unit and the support assembly are enclosed in the filter piece four -around, can effectively protect the filter piece, and the filter piece basically covers the air inlet and air outlet, and the support assembly can abut, support the filter piece surface, effectively protect, limit the filter piece, prevent the filter piece from deforming under the action of airflow, guarantee the filtering effect, and the product is placed in the air filtration system pipeline, can effectively realize the filtering effect, and when the product is stored and transported, a plurality of filter pieces can be compressed to the storage state and are placed in the frame in the form of layering, and the filter pieces can be protected when the product is stored and transported, the filter pieces are prevented from deforming, and the integrity of the filter pieces is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment description, and the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0034] The utility model is further illustrated below in combination with the drawings and embodiments.

[0035] Figure 1 It is the overall structure schematic diagram of the utility model;

[0036] Figure 2 It is the explosion structure schematic diagram of the utility model;

[0037] Figure 3 It is Figure 2 The enlarged view of circle A;

[0038] Figure 4 It is the first sectional structure schematic diagram of the utility model;

[0039] Figure 5 is a second sectional view structure schematic view of the utility model;

[0040] Figure 6 is Figure 4 the enlarged view of circle B;

[0041] Figure 7 is Figure 5 the enlarged view of circle C;

[0042] Figure 8 is a first structure schematic view of the corner connecting piece of the utility model;

[0043] Figure 9 is a second structure schematic view of the corner connecting piece of the utility model;

[0044] Figure 10 is a use state schematic view of the utility model;

[0045] Figure 11 is a storage state schematic view of the utility model;

[0046] Figure 12 is a storage process assembly schematic view of the utility model;

[0047] Figure 13 is an assembly schematic view of another embodiment of the utility model;

[0048] Figure 14 is a storage process assembly schematic view of another embodiment of the utility model.

[0049] Mark explanation:

[0050] 100, frame; 101, sliding groove; 102, plug-in slot; 103, clamping hole; 104, first mounting hole; 110a, first frame unit; 110b, second frame unit; 111, first connecting plate; 112, first protruding block; 113, second protruding block; 114, second limiting block; 120, corner connecting piece; 121, plug-in block; 121a, guide arc surface; 122, second connecting plate; 123, clamping block; 123a, guide inclined surface; 124, deformation part; 125, abutting boss; 126, indication mark; 200, filter piece; 210, end cover; 211, first limiting block; 300, support assembly; 301, second mounting hole; 310, support piece. Specific implementation

[0051] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described herein and by one of ordinary skill in the art without departing from the spirit and scope of the present application, and it is therefore intended that all such variations be considered as falling within the scope of the present application. It should be understood that the use of the terms "include", "comprise" or "contain" herein should not be understood as limiting the present application to the features or steps described herein, but rather the use of these terms is intended to cover the presence of the features or steps described herein as well as the presence of other features or steps not described herein.

[0052] In the description of the present application, it should be understood that, if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0053] In addition, if these terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features referred to. Therefore, the features defined with "first", "second" can include at least one of the features explicitly or implicitly. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0054] In the present application, unless otherwise specifically defined and limited, if the terms "mount", "connect", "connect", "fix" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In the present application, unless specifically stated and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can mean that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature "under", "below" and "underneath" the second feature can mean that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0056] It should be noted that if an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or there can be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be an intermediate element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not mean the only implementation.

[0057] Referring to Figures 1 to 14 A filter device for being installed in a mounting cavity of an air filter system, comprising:

[0058] A frame 100 comprising two first frame units 110a arranged opposite to each other, an accommodation space formed between the two first frame units 110a, and an air inlet and an air outlet communicating with the accommodation space;

[0059] A support assembly 300 detachably connected to the two first frame units 110a and spanning the air inlet and / or the air outlet;

[0060] A filter element 200 having an upper end and a lower end and a pleated medium extending between the upper end and the lower end, the upper end and the lower end of the filter element 200 being closer to or farther away from each other to enable the filter element 200 to be switched between a storage state and a use state;

[0061] When the filter element 200 is in the use state, the upper end and the lower end of one filter element 200 are respectively and slidably connected to two first frame units 110a arranged opposite to each other; when the filter element 200 is in the storage state, at least two filter elements 200 are stacked in the accommodation space.

[0062] Through the arrangement of the above structure, in use, the upper end of the filter element 200 is slidably connected to the upper first frame unit 110a, the lower end of the filter element 200 is slidably connected to the lower first frame unit 110a, and the support assembly 300 is connected to the two first frame units 110a. The first frame unit 110a and the support assembly 300 are enclosed around the filter element 200, which can effectively protect the filter element 200. The filter element 200 basically covers the air inlet and the air outlet, and the support assembly 300 can abut and support the surface of the filter element 200, effectively protecting and limiting the filter element 200, preventing the filter element 200 from deforming under the action of airflow, and ensuring the filtering effect. Placing the product in the air filtering system pipeline can effectively achieve the filtering effect. When storing and transporting the product, the filter element 200 and the support assembly 300 can be detached, and the upper end and the lower end of the filter element 200 can be brought close to each other, which makes it more convenient to fold the product, reduces the volume of the product, and is convenient for storage and transportation, thereby reducing the transportation cost. By compressing multiple filter elements 200 to a storage state and stacking them in the frame 100, the filter elements 200 can be protected during storage and transportation, preventing deformation of the filter elements 200 and ensuring the integrity of the filter elements 200. In addition, users can choose filter elements 200 with different filtering levels according to different filtering needs, such as filter elements 200 with filtering levels of MERV 8, MERV 10, MERV 11, MERV 13 or MERV 16. Filter elements 200 with different filtering levels can be adaptively installed in the support assembly 300, providing better user experience. Users can also choose filter elements 200 with different additional functions, such as filter elements 200 with functions of filtering TVOC gas, animal odor, bacteria, and allergens. At the same time, the support assembly 300 can be reused, and only the filter element 200 needs to be replaced when replacing the filter device, thereby reducing the cost of the product.

[0063] In the embodiment, the frame 100 further comprises two second frame units 110b arranged opposite to each other. The two second frame units 110b are detachably connected to the two first frame units 110a to form the frame 100 in a substantially rectangular shape. Through the arrangement of the above structure, in use, the two first frame units 110a and the two second frame units 110b are connected in sequence at intervals and from end to end to form the frame 100 in a substantially rectangular shape. In cooperation with the support assembly 300, the frame 100 is more stable in structure, effectively supports and protects the filter element 200 in the containing space, prevents the filter element 200 from being damaged during use, transportation and storage, and further ensures the filtering effect of the filter device, thereby improving the user experience.

[0064] In the embodiment, two strip-shaped first connecting plates 111 are formed along the front and back sides of the first frame unit 110a and the second frame unit 110b, extending towards the direction where the filter 200 is located. The inner side wall of the first connecting plate 111 is provided with a sliding groove 101. The upper and lower ends of the filter 200 are provided with two end covers 210, and the edges of the end covers 210 are inserted into the sliding groove 101 on the first frame unit 110a. Through the above structure, the first connecting plate 111 can at least partially cover the outer surface of the edge of the filter 200, further providing protection for the filter 200, preventing the filter 200 from being worn during use and transportation, and effectively prolonging the service life of the product. By inserting the edges of the end covers 210 along the sliding groove 101, the filter 200 can be conveniently and smoothly installed and removed, making it convenient for users to replace a new filter 200, and the use is convenient.

[0065] In the embodiment, the inner side wall of the first connecting plate 111 is provided with a first protrusion 112 and a second protrusion 113, and the sliding groove 101 is formed between the first protrusion 112 and the second protrusion 113. Through the above structure, the first protrusion 112 and the second protrusion 113 are protrudingly arranged along the inner side wall of the first connecting plate 111, and the sliding groove 101 formed thereby can effectively allow the edges of the end covers 210 to be inserted, facilitating the installation and replacement of the filter 200. Compared with the way of opening the sliding groove 101 on the first connecting plate 111, the way of protrudingly arranging the first protrusion 112 and the second protrusion 113 can avoid reducing the thickness of the first connecting plate 111 at the sliding groove 101, ensuring the strength of the product, and being conducive to one-piece molding, thereby improving the production efficiency of the product.

[0066] In the embodiment, the edges of the end covers 210 are provided with a first limiting block 211, and when the edges of the end covers 210 are inserted into the sliding groove 101, the first limiting block 211 abuts against the end face of the first protrusion 112 and / or the end face of the second protrusion 113. Through the above structure, when in use, the edges of the end covers 210 are inserted along the sliding groove 101, and the first limiting block 211 abuts against the end face of the first protrusion 112 and / or the end face of the second protrusion 113, which can effectively limit the movement of the filter 200 in the front-back direction, preventing the edges of the end covers 210 from sliding out of the sliding groove 101 under the action of air flow, further ensuring the stability of the product. At the same time, the installation position of the filter 200 in the front-back direction relative to the frame 100 is also limited, avoiding the front and back surfaces of the filter 200 being too close to the air inlet and / or air outlet, further providing protection for the filter 200, ensuring the stability of the product, and improving the service life of the product.

[0067] In the embodiment, the frame 100 further comprises four corner connectors 120, the first frame unit 110a and the second frame unit 110b are connected by the corner connectors 120 to enclose the frame 100 in a substantially rectangular shape. Through the arrangement of the above structure, the adjacent first frame unit 110a and second frame unit 110b can be connected by using the corner connector 120, which is convenient to use and can form a stable frame 100 in a substantially rectangular shape, effectively protecting the filter element 200; and since the corners are prone to collision and wear, after the corner connector 120 is damaged, the user can replace the corner connector 120 alone, reducing maintenance costs.

[0068] In the embodiment, the first protrusion 112 and the surface of the first frame unit 110a and / or the second frame unit 110b towards the filter element 200 form an insertion slot 102, and the corner connector 120 is provided with an insertion block 121 which is inserted into the insertion slot 102. Through the arrangement of the above structure, in use, the insertion block 121 is inserted into the insertion slot 102, which can conveniently connect the connected first frame unit 110a and second frame unit 110b by using the corner connector 120, the connection method is simple, and it is convenient for the user to assemble or disassemble the product; and the insertion block 121 abuts against one side surface of the first protrusion 112, the edge of the end cover 210 is inserted into the sliding groove 101, and the edge of the end cover 210 abuts against the other side surface of the first protrusion 112, which can balance the stress, prevent the first protrusion 112 from deforming to cause the edge of the end cover 210 to slide out of the sliding groove 101, ensure the stability of the product, and improve the service life of the product.

[0069] In the embodiment, the first protrusion 112 is provided with a second limiting block 114, and when the insertion block 121 is inserted into the insertion slot 102, the second limiting block 114 abuts against the inner surface of the insertion block 121. Through the arrangement of the above structure, in use, the insertion block 121 is inserted along the insertion slot 102, and the second limiting block 114 abuts against the inner surface of the insertion block 121, which can effectively limit the insertion block 121 in the front and rear directions, prevent the insertion block 121 from being separated from the insertion slot 102, make the corner connector 120 more stably connected to the first frame unit 110a and the second frame unit 110b, and further ensure the stability of the product.

[0070] In the embodiment, the corner connecting piece 120 comprises two second connecting plates 122 connected perpendicularly, and each of the second connecting plates 122 is provided with a clamping block 123. The first frame unit 110a and the second frame unit 110b are provided with clamping holes 103, and the clamping block 123 is detachably clamped in the clamping hole 103. Through the above structure, when the plug-in block 121 is inserted along the plug-in slot 102 until the clamping block 123 is clamped in the clamping hole 103, the position of the corner connecting piece 120 and the first frame unit 110a in the horizontal direction is limited, the position of the corner connecting piece 120 and the second frame unit 110b in the vertical direction is limited, and the corner connecting piece 120 is further stably connected with the first frame unit 110a and the second frame unit 110b.

[0071] In the embodiment, the clamping block 123 is provided with a guide inclined surface 123a, and the guide inclined surface 123a is arranged outside the clamping block 123. Through the above structure, when the plug-in block 121 is inserted along the plug-in slot 102, the guide inclined surface 123a abuts against and slides along the surface of the first frame unit 110a or the surface of the second frame unit 110b, and then the surface of the clamping block 123 can slide along the surface of the first frame unit 110a or the surface of the second frame unit 110b, preventing the end of the clamping block 123 from being clamped, allowing the user to more easily insert the end of the plug-in block 121 along the plug-in slot 102, and facilitating the connection of the corner connecting piece 120 with the first frame unit 110a and / or the second frame unit 110b.

[0072] In the embodiment, the second connecting plate 122 is provided with a through hole in the middle, and a deformation portion 124 is formed along one side wall of the through hole. The deformation portion 124 has a gap with other side walls of the through hole, and the clamping block 123 is arranged on the upper surface of the deformation portion 124. The elastic restoring force of the deformation portion 124 drives the clamping block 123 to be clamped in the clamping hole 103. Through the above structure, when the plug-in block 121 is inserted along the plug-in slot 102, the surface of the clamping block 123 abuts against and slides along the surface of the first frame unit 110a or the surface of the second frame unit 110b, the deformation portion 124 is deformed under stress until the clamping block 123 is aligned with the clamping hole 103, the deformation portion 124 resets, the elastic restoring force of the deformation portion 124 drives the clamping block 123 to be clamped in the clamping hole 103, and the installation is convenient. The deformation portion 124 has a gap with other side walls of the through hole, providing a deformation space.

[0073] In the embodiment, the second connecting plate 122 is provided with an abutting boss 125 abutting against the end of the first frame unit 110a and / or the second frame unit 110b. Through the above structure, when the mounting block 121 is inserted along the insertion slot 102 until the clamping block 123 is clamped in the clamping hole 103, the abutting boss 125 abuts against the end of the first frame unit 110a and / or the second frame unit 110b, which can effectively limit the installation position and prevent the corner connecting piece 120, the first frame unit 110a or the second frame unit 110b from being damaged due to excessive force.

[0074] In the embodiment, the support assembly 300 is detachably connected to the first connecting plate 111 of the first frame unit 110a. Through the above structure, when the support assembly 300 is damaged or deformed, the support assembly 300 can be conveniently replaced, effectively saving the cost of the product; and when the support assembly 300 is detached, the distance between the two first frame units 110a arranged opposite to each other can be changed, thereby reducing the overall volume of the product and reducing the transportation and storage cost.

[0075] In the embodiment, the first connecting plate 111 of the first frame unit 110a is provided with a first mounting hole 104, and the end of the support assembly 300 is provided with a second mounting hole 301, which are used to allow the connecting piece to be inserted and used. Through the above structure, when the first mounting hole 104 is aligned with the second mounting hole 301, the connecting piece such as a screw or a rivet is inserted along the first mounting hole 104 and the second mounting hole 301, which can effectively realize the connection between the support assembly 300 and the first frame unit 110a, and the connection is convenient and stable.

[0076] In the embodiment, the support assembly 300 includes two support pieces 310, the middle portions of which are rotatably connected to form an "X"-shaped support assembly 300, and the second mounting hole 301 is arranged at the end of the support piece 310. Through the above structure, the "X"-shaped support assembly 300 can effectively support the two first frame units 110a arranged opposite to each other, limit the distance between the two first frame units 110a, and improve the stability of the product; in other embodiments, a plurality of vertically extending support pieces can also be used to support the two first frame units 110a, and a rhombus, a triangle or other support pieces can also be used to support the two first frame units 110a.

[0077] In the embodiment, the first mounting hole 104 comprises a plurality of first mounting holes 104, and each first mounting hole 104 is arranged at the second connecting plate 122 in a spaced manner. Through the arrangement of the above structure, in use, by aligning the second mounting hole 301 with the first mounting hole 104 at different positions, the included angle between the two support pieces 310 can be changed, and then the length of the support assembly 300 in the vertical direction is changed, and then the distance between the two first frame units 110a can be adjusted, the adaptability of the product is improved, and the user can also conveniently transport and store the product.

[0078] In the embodiment, the first mounting hole 104 is a strip-shaped waist hole. Through the arrangement of the above structure, in use, the threaded fastener is passed through the second mounting hole 301 and the first mounting hole 104 in the form of a waist hole, the threaded fastener is slid along the first mounting hole 104 in the form of a waist hole, and the threaded fastener is screwed to fix the support piece 310 with the first frame unit 110a, so that the user can conveniently adjust the included angle between the two support pieces 310, and then adjust the distance between the two first frame units 110a, improve the adaptability of the product, and also facilitate the user to transport and store the product.

[0079] In the embodiment, the corner connecting piece 120 is provided with an indication mark 126, and the indication mark 126 points to the clamping block 123. Through the arrangement of the above structure, the user can intuitively observe the position of the clamping block 123 through the indication mark 126, and when the corner connecting piece 120 is detached from the first frame unit 110a and / or the second frame unit 110b, the user can conveniently press the clamping block 123 to make the clamping block 123 separate from the clamping hole 103, and the product is convenient to disassemble.

[0080] In the embodiment, the end of the insertion block 121 is provided with a guide arc surface 121a. Through the arrangement of the above structure, when the insertion block 121 is inserted along the insertion slot 102, the guide arc surface 121a can allow the user to more easily insert the end of the insertion block 121 along the insertion slot 102, and the user can conveniently install the product.

[0081] In the embodiment, the outer surface of the abutting boss 125 and the outer surface of the first frame unit 110a and / or the second frame unit 110b are substantially in the same plane. Through the arrangement of the above structure, the edges of the abutting boss 125, the first frame unit 110a or the second frame unit 110b can be effectively prevented from scratching external objects, the product damage caused thereby is reduced, and the product appearance is more beautiful.

[0082] In this embodiment, the first frame unit 110a, the second frame unit 110b and the support assembly 300 are all made of hard material. Through the arrangement of the above structure, the first frame unit 110a, the second frame unit 110b and the support assembly 300 made of hard material can effectively protect the filter element 200, prevent the filter element 200 from being deformed and damaged, and thus guarantee the filtering effect of the product and improve the user's experience.

Claims

1. A filter device to be installed in a mounting cavity of an air filter system, characterized in that, The utility model relates to a filter frame, comprising: a frame (100) comprising two first frame units (110a) arranged oppositely in up-down direction, an accommodating space formed between the two first frame units (110a), and an air inlet and an air outlet communicating with the accommodating space; a support assembly (300) detachably connected to the two first frame units (110a) and spanning the air inlet and / or the air outlet; a filter element (200) having an upper end and a lower end and a pleated medium extending between the upper end and the lower end, the upper end and the lower end of the filter element (200) being capable of moving towards or away from each other so that the filter element (200) can be switched between a storage state and a use state; when the filter element (200) is in the use state, the upper end and the lower end of one filter element (200) are respectively slidably connected to two first frame units (110a) arranged oppositely in up-down direction; when the filter element (200) is in the storage state, at least two filter elements (200) are arranged in a stacked manner in the accommodating space.

2. The filter device of claim 1, wherein, The frame (100) further comprises two second frame units (110b) arranged oppositely in left-right direction, the two second frame units (110b) being detachably connected to the two first frame units (110a) to form the frame (100) in a substantially rectangular shape.

3. The filter device of claim 2, wherein, Two first connecting plates (111) in the shape of strips are formed along the front and back sides of the first frame units (110a) and the second frame units (110b) and extend towards the filter element (200), the inner side walls of the first connecting plates (111) are provided with sliding grooves (101), and the upper and lower ends of the filter element (200) are provided with two end covers (210), the edges of the end covers (210) are inserted into the sliding grooves (101) on the first frame units (110a).

4. The filter device of claim 3, wherein, First protrusions (112) and second protrusions (113) are protruded on the inner side walls of the first connecting plates (111), and the sliding grooves (101) are formed between the first protrusions (112) and the second protrusions (113).

5. The filter device of claim 4, wherein, First limiting blocks (211) are protruded on the edges of the end covers (210), when the edges of the end covers (210) are inserted into the sliding grooves (101), the first limiting blocks (211) abut against the end faces of the first protrusions (112) and / or the end faces of the second protrusions (113).

6. The filter device of claim 5, wherein, The frame (100) further comprises four corner connecting pieces (120), the first frame units (110a) and the second frame units (110b) are connected by the corner connecting pieces (120) to form the frame (100) in a substantially rectangular shape.

7. The filter device of claim 6, wherein, The first protrusion (112) and the surface of the filter element (200) towards the first frame unit (110a) and / or the second frame unit (110b) form an insertion groove (102), and the corner connecting piece (120) is provided with an insertion block (121) inserted into the insertion groove (102).

8. The filter device of claim 7, wherein, The first protrusion (112) is provided with a second limiting block (114), and when the insertion block (121) is inserted into the insertion groove (102), the second limiting block (114) abuts against the inner surface of the insertion block (121).

9. The filter device of claim 6, wherein, The corner connecting piece (120) comprises two second connecting plates (122) connected perpendicularly, and the two second connecting plates (122) are both provided with a clamping block (123), and the first frame unit (110a) and the second frame unit (110b) are provided with a clamping hole (103) at the end, and the clamping block (123) is detachably clamped in the clamping hole (103).

10. The filter device of claim 9, wherein, The clamping block (123) is provided with a guide inclined surface (123a) arranged on the outer side of the clamping block (123).

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