Filter unit and filter box thereof

Abstract

The invention discloses a filter unit and a filter box. The filter unit comprises a filter module and a filter material amplification module, the filtering module is provided with an outer side filtering assembly and an inner side filtering assembly, and a filtering space is formed between the outer side filtering assembly and the inner side filtering assembly; the filter material amplification module is combined with one of the outer side filter assembly and the inner side filter assembly, and the filter material amplification module is provided with an expansion space communicated with the filter space; the filter box comprises the filter unit and a fixing unit, the fixing unit comprises a plurality of fixing side frames and a mounting frame, every two fixing side frames are assembled on the two sides of the filter module respectively so as to fix the outer side filter assembly and the inner side filter assembly, and the filter unit is fixed in the mounting frame through the fixing side frames so as to fix the outer side filter assembly and the inner side filter assembly. Therefore, the internal space volume of the filtering unit is increased, and the filtering efficiency is improved.

Description

Technical Field

[0001] The invention relates to air filtering technology, and in particular to a filtering unit and a filtering box thereof. Background Art

[0002] Currently, in many manufacturing fields of optoelectronics, precision industry and semiconductor industry, in order to meet product production requirements, production and manufacturing are usually carried out in a clean, pollution-free and isolated dust-free space.

[0003] The environment of the dust-free space usually has a fan and an air filter installed at the air inlet, so that the airflow is driven by the fan and filtered by the air filter to prevent suspended matter in the airflow from entering the dust-free space.

[0004] Generally speaking, the basic structure of the filter assembly in the air filtration device includes two sheet filter materials and a filter material arranged between the two filter materials. Since the internal space of the filter assembly is formed according to the spacing distance between the two filter materials, and the two filter materials do not have an area for expanding the area, the internal space volume of the filter assembly is limited by the shape of the two filter materials, and it is impossible to increase the filling amount of the filter material, thereby reducing the service life of the filter assembly, resulting in a waste of the replacement cost of the filter assembly. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a filter unit and a filter box thereof, which increase the internal space volume of the filter unit, thereby improving the filtering efficiency and extending the service life.

[0006] In order to achieve the above-mentioned purpose, the filter unit provided by the present invention includes a filter module and a filter material expansion module; the filter module has an outer filter component and an inner filter component, and the outer filter component and the inner filter component are arranged at intervals to form a filter space; the filter material expansion module is combined with one of the outer filter component and the inner filter component in the filter module, and the filter material expansion module has an expansion space corresponding to the inside of the filter module to connect with the filter space.

[0007] In one embodiment, the filter material amplification module includes at least one first amplification portion and at least one second amplification portion, the first amplification portion is integrally formed on the outer filter component, and the second amplification portion is integrally formed on the inner filter component.

[0008] In one embodiment, the outer filter component has an outer filter surface, the inner filter component has an inner filter surface, the first amplification part and the second amplification part are respectively combined on the outer filter surface and the inner filter surface with a concave-convex structure, and the expansion space is formed between the first amplification part and the second amplification part.

[0009] In one embodiment, the first amplifying portion has a convex section that protrudes outward relative to the outer filter surface, and the first amplifying portion forms a groove inside the convex section, and the second amplifying portion has a concave section that is concave into the groove relative to the inner filter surface toward the convex section of the first amplifying portion.

[0010] In one embodiment, the outer filter surface has two first side ends on both sides, and the outer filter surface has a first straight end connecting the two first side ends, the first expansion portion is formed on the outer filter surface corresponding to the extension direction of the first straight end to connect the two first side ends, and the outer filter surface is divided by the first expansion portion to form a plurality of outer filter sections located on both sides of the first expansion portion; the inner filter surface has two second side ends on both sides, and the inner filter surface has a second straight end connecting the two second side ends, the second expansion portion is formed on the inner filter surface corresponding to the extension direction of the second straight end to connect the two second side ends, and the inner filter surface is divided by the second expansion portion to form a plurality of inner filter sections located on both sides of the second expansion portion, wherein the plurality of inner filter sections and the plurality of outer filter sections face each other.

[0011] In one embodiment, the first amplifying portion has two first combining sections corresponding to two first side ends on the same side of the outer filter surface, and the second amplifying portion has two second combining sections corresponding to two second side ends on the same side of the inner filter surface, and the two first combining sections and the two second combining sections are in contact with each other.

[0012] In one of the embodiments, the outer filter assembly includes a first outer filter and a second outer filter, one end of the first outer filter is combined with one end of the second outer filter, and the first outer filter and the second outer filter are respectively inclined outward to form an open groove; the inner filter assembly is accommodated in the open groove of the outer filter assembly, and the inner filter assembly includes a first inner filter and a second inner filter, one end of the first inner filter is combined with one end of the second inner filter, and the first inner filter and the second inner filter are respectively inclined outward corresponding to the first outer filter and the second outer filter, so that a first filter space is formed between the first outer filter and the first inner filter, and a second filter space is respectively formed between the second outer filter and the second inner filter.

[0013] In one of the embodiments, the outer filter assembly includes a base filter, and the two sides of the base filter are respectively combined with the first outer filter and the second outer filter; the inner filter assembly includes a connecting filter, the connecting filter faces the base filter, and the two sides of the connecting filter are respectively combined with the first inner filter and the second inner filter, wherein a connecting space is formed between the connecting filter and the base filter, and the first filter space and the second filter space are connected to each other through the connecting space.

[0014] In one of the embodiments, the outer filter assembly has a plurality of outer joints, which are respectively arranged at the two first side ends of the outer filter surface corresponding to each of the outer filter sections; the inner filter assembly has a plurality of inner joints, which are respectively arranged at the two second side ends of the inner filter surface corresponding to each of the inner filter sections, and each of the outer joints is engaged with each of the inner joints.

[0015] The present invention provides a filter box provided in another embodiment, comprising the aforementioned filter unit and a fixing unit; the fixing unit fixes the filter unit, the fixing unit comprises a plurality of fixed side frames and a mounting frame, each two fixed side frames are respectively assembled on both sides of the filter module to fix the outer filter component and the inner filter component, the mounting frame has an mounting space, the mounting frame is locked to the plurality of fixed side frames so that the filter unit is fixed in the mounting space of the mounting frame through the plurality of fixed side frames.

[0016] In one embodiment, each two fixed side frames are fixed to the two sides of the outer filter assembly, and each fixed side frame includes a positioning plate, and the positioning plate has a flange that abuts against the outer filter assembly. Further, the flange includes two side edges, a bottom edge and a top edge, and the two side edges have two side blocks to abut against the outer filter surface peripheries of the first outer filter screen and the second outer filter screen, and the bottom edge has a connecting block connecting the two side blocks, and the connecting block correspondingly abuts against the periphery of the base filter screen.

[0017] In one embodiment, the mounting frame has two mounting support rods, a plurality of the filter units are adjacently arranged between the two mounting support rods, and each of the filter units is fixed to the two mounting support rods through two fixed side frames.

[0018] The effect of the present invention is that the filter unit is structurally designed with the filter module and the filter material expansion module, and the filter material expansion module forms the expansion space inside the filter module, thereby increasing the volume of the internal space of the filter unit, thereby expanding the filling amount of the filter material in the filter unit, further improving the filtering efficiency of the filter box, and extending the service life of the multiple filter units, thereby achieving the purpose of saving the replacement cost of the filter units. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of a filter unit according to a first preferred embodiment of the present invention.

[0020] Figure 2 It is a structural exploded view of the filter unit according to the first preferred embodiment of the present invention.

[0021] Figure 3 It is a side view of the outer filter assembly in the filter unit of the first preferred embodiment of the present invention.

[0022] Figure 4 It is a side view of the inner filter assembly in the filter unit of the first preferred embodiment of the present invention.

[0023] Figure 5 It is a front view of a filter unit according to a first preferred embodiment of the present invention.

[0024] Figure 6 It is a cross-sectional schematic diagram of a filter unit according to a first preferred embodiment of the present invention.

[0025] Figure 7 for Figure 6 A partial enlarged view of the portion marked A.

[0026] Fig. 8AIt is a schematic diagram of another implementation of the surface area expansion portion in the filter unit of the first preferred embodiment of the present invention.

[0027] Figure 8B This is a schematic diagram of another implementation of the surface area expansion portion of the filter unit in the first preferred embodiment of the present invention.

[0028] Fig. 9 It is a three-dimensional diagram of a filter box according to a second preferred embodiment of the present invention.

[0029] Fig.10 This is a structural exploded view of the filter box according to the second preferred embodiment of the present invention.

[0030] Fig.11 This is a structural exploded view of the fixed side plate and the filter unit in the filter box of the second preferred embodiment of the present invention.

[0031] Fig.12 It is a partial front view of a filter box according to a second preferred embodiment of the present invention.

[0032] Fig.13 It is a partial top view of the filter box according to the second preferred embodiment of the present invention.

[0033] Fig.14 It is a partial bottom view of the filter box according to the second preferred embodiment of the present invention.

[0034] Fig.15 It is a partial cross-sectional schematic diagram of a filter box according to a second preferred embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 100: Filter box

[0037] 10: Filter unit

[0038] 11: Filter module

[0039] 111: Outer filter assembly

[0040] 111a: First outer filter

[0041] 111b: Second outer filter

[0042] 111c: Base filter

[0043] 111d: Open slot

[0044] 112: Inner filter assembly

[0045] 112a: First inner filter

[0046] 112b: Second inner filter

[0047] 112c: Connect the filter

[0048] 112d: Open Space

[0049] 113: Outer filter surface

[0050] 113a: Outer filter section

[0051] 1131: First side end

[0052] 1132: First straight end

[0053] 114: Outer joint

[0054] 115: Outer fixing part

[0055] 116: Inner filter surface

[0056] 116a: Inner filter section

[0057] 1161: Second side end

[0058] 1162: Second straight end

[0059] 117: medial joint

[0060] 12: Filter material amplification module

[0061] 121: First Amplification Section

[0062] 121a: convex section

[0063] 121b: First binding section

[0064] 122: Second Amplification Section

[0065] 122a: Concave section

[0066] 122b: Second binding section

[0067] 20: Fixed unit

[0068] 21: Fixed side frame

[0069] 211: Positioning plate

[0070] 2111: Side edge

[0071] 2112: Bottom edge

[0072] 2113: Top edge

[0073] 212: Side block

[0074] 213: Connecting block

[0075] 214: Alignment hole

[0076] 22: Install the framework

[0077] 221: Install the support rod

[0078] 2211: Keyhole

[0079] 222: Connecting rod

[0080] 223: Installation space

[0081] 23: Cover

[0082] 231: First cover

[0083] 2311: Cover frame

[0084] 2312: Connecting rod

[0085] 232: Second cover

[0086] S: Filter space

[0087] S1: First filtering space

[0088] S2: Second filtering space

[0089] S3: Connected Space

[0090] P: Expand space

[0091] 1: Filter material DETAILED DESCRIPTION

[0092] In order to more clearly illustrate the present invention, preferred embodiments are given and described in detail with reference to the accompanying drawings as follows. Figure 1 , Figure 2 A first preferred embodiment of the present invention is shown to provide a basic structure of a filter unit 10 .

[0093] The filter unit 10 provided in the first embodiment includes a filter module 11 and a filter material amplification module 12 .

[0094] The filter module 11 has an outer filter assembly 111 and an inner filter assembly 112. The outer filter assembly 111 and the inner filter assembly 112 are arranged at intervals, so that a filter space S is formed between the outer filter assembly 111 and the inner filter assembly 112. The filter space S is filled with a filter material 1 (see Fig.15 In this embodiment, the outer filter element 111 and the inner filter element 112 may be made of, but not limited to, a plate having a plurality of filter mesh holes in a partial surface area.

[0095] And participate Figure 2 , Figure 3, describing the detailed structure of the outer filter assembly 111, the outer filter assembly 111 has an outer filter surface 113, wherein the outer filter assembly 111 includes a first outer filter screen 111a and a second outer filter screen 111b, one end of the first outer filter screen 111a is combined with one end of the second outer filter screen 111b, in this embodiment, the outer filter assembly 111 includes a base filter screen 111c, both sides of the base filter screen 111c are respectively combined with the first outer filter screen 111a and the second outer filter screen 111b, that is, the first outer filter screen 111a and the second outer filter screen 111b are combined together through the base filter screen 111c, wherein the first outer filter screen 111a and the second outer filter screen 111b are respectively inclined outward, and the first outer filter screen 111a, the second outer filter screen 111b and the base filter screen 111c surround an open groove 111d.

[0096] Specifically, the first outer filter screen 111a and the second outer filter screen 111b respectively have the outer filter surface 113, such as Figure 3 As shown, the two sides of the outer filter surface 113 have two first side ends 1131, and the top side of the outer filter surface 113 has a first straight end 1132 connecting the two first side ends 1131. Figure 2 , Figure 3 and Figure 5 As shown, the first outer filter screen 111a and the second outer filter screen 111b respectively have a plurality of outer joint portions 114, the plurality of outer joint portions 114 are respectively arranged at the two first side ends 1131 of the outer filter surface 113, and the plurality of outer joint portions 114 extend inwardly toward the open groove 111d relative to the outer filter surface 113, wherein the two ends of the base filter screen 111c have two outer fixing portions 115, the two outer fixing portions 115 extend upwardly toward the open groove 111d, and the two outer fixing portions 115 are adjacent to the outer joint portions 114 of the first outer filter screen 111a and the second outer filter screen 111b.

[0097] And participate Figure 2 , Figure 4, the detailed structure of the inner filter assembly 112 is described, the inner filter assembly 112 has an inner filter surface 116, wherein the inner filter assembly 112 is accommodated in the open groove 111d of the outer filter assembly 111, the inner filter assembly 112 includes a first inner filter screen 112a and a second inner filter screen 112b, one end of the first inner filter screen 112a is combined with one end of the second inner filter screen 112b, in this embodiment, the inner filter assembly 112 includes a connecting filter screen 112c, the connecting filter 112c faces the base filter 111c, and the two sides of the connecting filter 112c are respectively combined with the first inner filter 112a and the second inner filter 112b, that is, the first inner filter 112a and the second inner filter 112b are combined together through the connecting filter 112c, wherein the first inner filter 112a and the second inner filter 112b are respectively inclined outwards corresponding to the first outer filter 111a and the second outer filter 111b.

[0098] like Figure 5 to Figure 7 As shown, a first filter space S1 is formed between the first outer filter 111a and the first inner filter 112a, and a second filter space S2 is respectively formed between the second outer filter 111b and the second inner filter 112b. At this time, a connecting space S3 is formed between the connecting filter 112c and the base filter 111c. The first filter space S1 and the second filter space S2 are interconnected through the connecting space S3, and an open space 112d is formed between the first inner filter 112a and the second inner filter 112b in the inner filter assembly 112. The open space 112d can be connected to the filter space S inside the filter module 11 through the filter holes of the inner filter assembly 112.

[0099] Specifically, the first inner filter screen 112a and the second inner filter screen 112b respectively have the inner filter surface 116. Figure 4 As shown, the inner filter surface 116 has two second side ends 1161 on both sides, and the top side of the inner filter surface 116 has a second straight end 1162 connecting the two second side ends 1161. Figure 2 , Figure 4 and Figure 5 As shown, the first inner filter 112a and the second inner filter 112b respectively have a plurality of inner joints 117, and the plurality of inner joints 117 are respectively arranged at the two second side ends 1161 of the inner filter surface 116, and each of the inner joints 117 is correspondingly combined with the inner wall of each of the outer joints 114, whereby the outer filter component 111 and the inner filter component 112 are combined to enclose the filter space S.

[0100] The filter material expansion module 12 is combined with one of the outer filter component 111 and the inner filter component 112 in the filter module 11. The filter material expansion module 12 has an expansion space P corresponding to the inside of the filter module 11 and connected to the filter space S. The expansion space P is also used to fill the filter material (not shown in the figure). Figure 2 to Figure 5 As shown, in this embodiment, the filter module 11 and the filter material expansion module 12 are integrally stamped and formed, and the filter material expansion module 12 includes a plurality of first expansion parts 121 and a plurality of second expansion parts 122, and each of the first expansion parts 121 is respectively integrally formed on the first outer filter 111a and the second outer filter 111b of the outer filter component 111, and each of the second expansion parts 122 is respectively integrally formed on the first inner filter 112a and the second inner filter 112b of the inner filter component 112, and the first expansion part 121 and the second expansion part 122 are both in the form of filter screens, which can allow external air to pass through to enter the expansion space P.

[0101] In other embodiments, the filter material amplification module 12 can be adjusted according to structural requirements. For example, the filter material amplification module 12 can include at least one of the first amplification part 121 and the second amplification part 122, or the filter material amplification module 12 can omit one of the first amplification part 121 and the second amplification part 122, as long as the filter material amplification module 12 can form the expansion space P on the outer filter component 111 or the inner filter component 112; the filter material amplification module 12 and the filter module 11 are not limited to being integrally formed, and the filter material amplification module 12 can also be set on the outer filter component 111 or the inner filter component 112 of the filter module 11 by other combination methods, as long as the expansion space P is connected to the filter space S.

[0102] Please refer to Figure 2 to Figure 7 In this embodiment, the first amplifying portion 121 and the second amplifying portion 122 are respectively combined on the outer filter surface 113 and the inner filter surface 116 with a concave-convex structure. Figure 6 , Figure 7As shown, the first amplifying portion 121 has a convex section 121a, which protrudes outward relative to the outer filter surface 113, and the first amplifying portion 121 forms a receiving groove on the inner side of the convex section 121a, and the second amplifying portion 122 has a concave section 122a, and the concave section 122a is concave into the receiving groove relative to the inner filter surface 116 toward the convex section 121a of the first amplifying portion 121, thereby forming a rectangular concave-convex pairing with the second amplifying portion 121, and the expansion space P is provided between the first amplifying portion 121 and the second amplifying portion 122, thereby increasing the volume of the internal space of the filter unit 10, thereby expanding the filling amount of the filter material in the filter unit 10.

[0103] In other embodiments, the concave-convex configuration of the first amplifying portion 121 and the second amplifying portion 122 can be adjusted to other forms according to needs, such as Fig. 8A , Figure 8B As shown, the first amplifying portion 121' and the second amplifying portion 122' in the filter material amplifying module 12' can be paired in an angular or arcuate form; or, the first amplifying portion 121 can be replaced by being arranged in the inner filter component 112, and the second amplifying portion 122 can be replaced by being arranged in the outer filter component 111; in addition, the first amplifying portion 121 and the second amplifying portion 122 are both designed as convex portions, and the first amplifying portion 121 and the second amplifying portion 122 can be relatively staggered.

[0104] like Figure 2 , Figure 3 As shown, the structural form of the first amplifying portion 121 on the outer filter surface 113 corresponds to the extension direction of the first straight end 1132 to connect the two first side ends 1131 and is formed on the outer filter surface 113, and the first amplifying portion 121 has two first connecting sections 121b corresponding to the two first side ends 1131 on the same side of the outer filter surface 113. At this time, the outer filter surface 113 is divided by the first amplifying portion 121 to form a plurality of outer filter sections 113a located on both sides of the first amplifying portion 121.

[0105] like Figure 2 , Figure 4As shown, the structural form of the second amplifying portion 122 on the inner filter surface 116 is formed on the inner filter surface 116 corresponding to the extension direction of the second straight end 1162 to connect the two second side ends 1161, and the second amplifying portion 122 has two second combining sections 122b corresponding to the two second side ends 1161 on the same side of the inner filter surface 116, and the two first combining sections 121b and the two second combining sections 122b are in contact with each other. At this time, the inner filter surface 116 is separated by the second amplifying portion 122 to form a plurality of inner filter sections 116a, which are located on both sides of the second amplifying portion 122, and the plurality of inner filter sections 116a and the plurality of outer filter sections 113a face each other. In this way, the structural design of the first amplifying portion 121 and the second amplifying portion 122 is for the purpose of effectively expanding the internal space of the filter unit 10, but is not limited thereto.

[0106] Therefore, the filter unit 10 is designed with the filter module 11 and the filter material expansion module 12. The filter material expansion module 12 forms the expansion space P inside the filter module 11, thereby increasing the volume of the internal space of the filter unit 10, thereby expanding the filling amount of the filter material in the filter unit 10, thereby improving the filtering efficiency of the filter unit 10. Since the filled filter material can be effectively increased, the service life of the filter unit 10 can be increased, and the replacement cost of the filter unit 10 can be reduced.

[0107] Please refer to Figures 9 to 15 A second preferred embodiment of the present invention is shown, which provides a basic structure of a filter box 100 . The filter box 100 includes a plurality of filter units 10 and a fixing unit 20 .

[0108] The basic structure of the plurality of filter units 10 is the same as that of the first embodiment. The filter unit 10 comprises the filter module 11 and the filter material expansion module 12. The outer filter component 111 and the inner filter component 112 in the filter module 11 are arranged at intervals to form the filter space S. The filter material expansion module 12 is combined with one of the outer filter component 111 and the inner filter component 112 in the filter module 11. The filter material expansion module 12 has the expansion space P corresponding to the inside of the filter module 11. The expansion space P is connected to the filter space S, and Fig.15 It is shown that the expansion space P and the filter space S inside each filter unit 10 are filled with the filter material 1, whereby the filter material expansion module 12 is added to increase the volume of the internal space of the filter unit 10, thereby expanding the filling amount of the filter material 1 in the filter unit 10, thereby improving the filtering efficiency of the filter unit 10.

[0109] The detailed structures of the filter module 11 and the filter material expansion module 12 in the filter unit 10 described in the second embodiment are the same as those of the filter unit 10 described in the first embodiment. In addition, in other embodiments, the number of the filter units 10 in the filter box 100 can be adjusted according to demand.

[0110] The fixing unit 20 is used to position the plurality of filter units 10 . The fixing unit 20 includes a plurality of fixing side frames 21 , a mounting frame 22 , and a plurality of cover plates 23 .

[0111] like Figures 9 to 11 As shown, each two fixed side frames 21 are respectively assembled on both sides of the filter module 11 to fix the outer filter component 111 and the inner filter component 112. In this embodiment, each two fixed side frames 21 are respectively fixed on both sides of the outer filter component 111, wherein each of the fixed side frames 21 includes a positioning plate 211, and the positioning plate 211 is abutted against the outer joint portion 114 of the outer filter component 111 to block the open space 112d on both sides of the inner filter component 112; further, the positioning plate 211 has a flange that abuts against the outer filter component 111 to support the outer filter component 111. In this embodiment, as Fig.10 , Fig.11 and Fig.14 As shown, the flange of the positioning plate 211 includes two side edges 2111, a bottom edge 2112 and a top edge 2113. The two side edges 2111 have two side blocks 212. The two side blocks 212 are used to abut against the periphery of the outer filter surface 113 of the first outer filter screen 111a and the second outer filter screen 111b in the outer filter assembly 111. The bottom edge 2112 has a connecting block 213 (see Fig.11 , Fig.14 ), the connecting block 213 connects the two side blocks 212, the connecting block 213 corresponds to abutting against the periphery of the base filter 111c, the top edge 2113 is provided with a plurality of alignment holes 214, and the plurality of alignment holes 214 are connected to the open space 112d between the first inner filter 112a and the second inner filter 112b in the inner filter assembly 112.

[0112] The installation frame 22 has two installation rods 221 and two connecting rods 222. The two installation rods 221 and the two connecting rods 222 are combined to form an installation space 223. Fig. 9 , Fig.10As shown, the plurality of filter units 10 are adjacently arranged between the two mounting support rods 221, and two adjacent filter units 10 are adjacently abutted by the first outer filter screen 111a of one filter module 11 and the second outer filter screen 111b of another filter module 11. Figure 10 to Figure 12 As shown, each of the mounting support rods 221 is provided with a plurality of locking holes 2211 corresponding to the alignment holes 214 of each of the fixed side frames 21, for a locking piece (not shown) to pass through, so that the mounting frame 22 is locked to the plurality of fixed side frames 21, and the plurality of filter units 10 are fixed on the two mounting support rods 221 through every two fixed side frames 21, and the plurality of filter units 10 are positioned in the mounting space 223 of the mounting frame 22.

[0113] like Fig.10 , Fig.13 and Fig.15 As shown, the cover plate 23 covers the top opening of each filter module 11. In this embodiment, the cover plate 23 includes multiple first cover plates 231 and at least one second cover plate 232. Each of the first cover plates 231 has two cover frames 2311 and two connecting rods 2312. The two cover frames 2311 are arranged parallel to each other. The two connecting rods 2312 respectively connect the two cover frames 2311, wherein one cover frame 2311 locks the inner filter assembly 112 of one of the filter units 10 of the adjacent mounting frame 22 and the connecting support rod 222, and the other cover frame 2311 is opposite to the connecting support rod 222 to lock the inner filter assembly 112 of the adjacent filter unit 10 The inner filter assembly 112 and the inner filter assembly 112 of another filter unit 10, the second cover plate 232 is located between the multiple first cover plates 231, and the second cover plate 232 is used to fix the first inner filter screen 112a of any adjacent one of the filter units 10 and the second inner filter screen 112b of another filter unit 10. In addition to positioning the adjacent filter units 10, it can also prevent foreign matter from directly entering the filter space S through the top side opening of the filter module 11, and the first cover plate 231 and the second cover plate 232 among the cover plates 23 can be detachably fixed to the mounting support rod 221 of the mounting frame 22 by a fastener (not shown in the figure).

[0114] Therefore, the structural design of the filter unit 10 in the filter box 100 and the filter material expansion module 12 can increase the volume of the internal space of the filter unit 10, thereby expanding the filling amount of the filter material 1 in the filter unit 10. In addition, the surface area of ​​the filter box 100 that can be filtered and the cross-sectional area for gas to pass through are also increased, thereby reducing the increase in pressure loss, further improving the filtering efficiency of the filter box 100, and extending the service life of the multiple filter units 10, thereby achieving the purpose of saving the replacement cost of the filter units 10.

[0115] The above descriptions are only preferred feasible embodiments of the present invention. Any equivalent changes made by applying the description and claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A filter unit, comprising: a filter module, comprising an outer filter component and an inner filter component, wherein the outer filter component and the inner filter component are spaced apart from each other to form a filter space; and A filter material expansion module is combined with one of the outer filter component and the inner filter component in the filter module. The filter material expansion module has an expansion space corresponding to the inside of the filter module and connected to the filter space.

2. The filter unit as claimed in claim 1, wherein the filter material amplification module comprises at least one first amplification portion and at least one second amplification portion, the first amplification portion is integrally formed on the outer filter component, and the second amplification portion is integrally formed on the inner filter component.

3. The filter unit as described in claim 2, wherein the outer filter component has an outer filter surface, the inner filter component has an inner filter surface, the first amplifying portion and the second amplifying portion are respectively combined on the outer filter surface and the inner filter surface with a concave-convex structure, and the expansion space is formed between the first amplifying portion and the second amplifying portion.

4. The filter unit as described in claim 3, wherein the first amplifying portion has a convex section that protrudes outward relative to the outer filter surface, and the first amplifying portion forms a groove on the inner side of the convex section, and the second amplifying portion has a concave section that is concave into the groove relative to the inner filter surface toward the convex section of the first amplifying portion.

5. The filter unit according to claim 3, wherein the outer filter surface has two first side ends on both sides, and the outer filter surface has a first straight end connecting the two first side ends, the first expansion portion is formed on the outer filter surface corresponding to the extension direction of the first straight end to connect the two first side ends, and the outer filter surface is divided by the first expansion portion to form a plurality of outer filter sections located on both sides of the first expansion portion; the inner filter surface has two second side ends on both sides, and the inner filter surface has a second straight end connecting the two second side ends, the second expansion portion is formed on the inner filter surface corresponding to the extension direction of the second straight end to connect the two second side ends, and the inner filter surface is divided by the second expansion portion to form a plurality of inner filter sections located on both sides of the second expansion portion, wherein the plurality of inner filter sections and the plurality of outer filter sections face each other.

6. The filter unit as claimed in claim 5, wherein the first amplifying portion has two first combining sections corresponding to two first side ends on the same side of the outer filter surface, and the second amplifying portion has two second combining sections corresponding to two second side ends on the same side of the inner filter surface, and the two first combining sections and the two second combining sections are in contact with each other.

7. The filter unit as described in claim 5, wherein the outer filter assembly comprises a first outer filter screen and a second outer filter screen, one end of the first outer filter screen is combined with one end of the second outer filter screen, and the first outer filter screen and the second outer filter screen are respectively inclined outward to form an open groove; the inner filter assembly is accommodated in the open groove of the outer filter assembly, and the inner filter assembly comprises a first inner filter screen and a second inner filter screen, one end of the first inner filter screen is combined with one end of the second inner filter screen, and the first inner filter screen and the second inner filter screen are respectively inclined outward corresponding to the first outer filter screen and the second outer filter screen, so that a first filter space is formed between the first outer filter screen and the first inner filter screen, and a second filter space is respectively formed between the second outer filter screen and the second inner filter screen.

8. The filter unit as described in claim 7, wherein the outer filter assembly includes a base filter, and the two sides of the base filter are respectively combined with the first outer filter and the second outer filter; the inner filter assembly includes a connecting filter, the connecting filter faces the base filter, and the two sides of the connecting filter are respectively combined with the first inner filter and the second inner filter, wherein a connecting space is formed between the connecting filter and the base filter, and the first filter space and the second filter space are connected to each other through the connecting space.

9. A filter box, comprising: At least one filter unit according to any one of claims 1 to 8, comprising a filter module and a filter material expansion module, the filter module having an outer filter component and an inner filter component, the outer filter component and the inner filter component are arranged at intervals to form a filter space located between the outer filter component and the inner filter component; the filter material expansion module is combined with one of the outer filter component and the inner filter component in the filter module, and the filter material expansion module has an expansion space corresponding to the inside of the filter module and connected to the filter space; and A fixing unit fixes the filter unit, the fixing unit comprises a plurality of fixed side frames and a mounting frame, each two fixed side frames are respectively assembled on both sides of the filter module to fix the outer filter component and the inner filter component, the mounting frame has an installation space, the mounting frame is connected to the plurality of fixed side frames so that the filter unit is fixed in the installation space of the mounting frame through the plurality of fixed side frames.

10. The filter box according to claim 9, wherein each two fixed side frames are fixed to two sides of the outer filter assembly respectively, and each of the fixed side frames comprises a positioning plate, and the positioning plate has a flange that abuts against the outer filter assembly.

11. The filter box according to claim 9, wherein the mounting frame has two mounting support rods, the filter units are multiple and adjacently arranged between the two mounting support rods, and each of the filter units is fixed to the two mounting support rods through each two fixed side frames.

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