WO2023133779A1 - Composant de filtre à air, cartouche filtrante et respirateur - Google Patents

Composant de filtre à air, cartouche filtrante et respirateur Download PDF

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Publication number
WO2023133779A1
WO2023133779A1 PCT/CN2022/071907 CN2022071907W WO2023133779A1 WO 2023133779 A1 WO2023133779 A1 WO 2023133779A1 CN 2022071907 W CN2022071907 W CN 2022071907W WO 2023133779 A1 WO2023133779 A1 WO 2023133779A1
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WO
WIPO (PCT)
Prior art keywords
air filter
filter component
sections
distance
periphery
Prior art date
Application number
PCT/CN2022/071907
Other languages
English (en)
Inventor
Jian Wei
Hyoung Sun Park
Junghan Kim
Jin Ho Lee
Jungchul MOON
Kyung Sun Choi
Sanghoon Lee
Original Assignee
3M Innovative Properties Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 3M Innovative Properties Company filed Critical 3M Innovative Properties Company
Priority to CN202280088936.7A priority Critical patent/CN118715052A/zh
Priority to KR1020247025038A priority patent/KR20240136354A/ko
Priority to PCT/CN2022/071907 priority patent/WO2023133779A1/fr
Publication of WO2023133779A1 publication Critical patent/WO2023133779A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B01D46/522—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with specific folds, e.g. having different lengths
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/02—Filters for breathing-protection purposes for respirators
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B7/00—Respiratory apparatus
    • A62B7/10—Respiratory apparatus with filter elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks
    • A62B18/025—Halfmasks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0668—The layers being joined by heat or melt-bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0672—The layers being joined by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/069—Special geometry of layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1233—Fibre diameter

Definitions

  • the present application relates to the technical field of safety protection, and in particular, to an air filter component, a filter cartridge having the air filter component, and a respirator having the filter cartridge.
  • respirators are widely used to provide safety protection for the wearer in various toxic and harmful environments, to prevent the wearer from being harmed by toxic gases or toxic substances such as steam, dust and bacteria, and to enable the wearer to inhale clean air.
  • the respirator mainly includes a respirator body and one or more filter cartridges mounted on the respirator body, and an air filter component is mounted in the filter cartridge.
  • the ambient air is filtered by the air filter component in the filter cartridge to remove pollutants (for example, aerosols of dust, fog droplets, bacteria, etc. ) in the ambient air, and the obtained clean air flows into the respirator body for the wearer to inhale.
  • the performance of a respirator depends on the performance of the mounted filter cartridge to a great extent, and more specifically, on the performance of the air filter component mounted in the filter cartridge.
  • the filter portion of the air filter component is made into a wave or pleated shape to increase the filter area.
  • an adhesive is generally used in the manufacturing process of the air filter component.
  • the adhesive used may generate toxicants, thereby affecting the safety of the wearer.
  • An object of the present application is to improve the air permeability and wearing comfort and safety of the air filter component while ensuring the protective performance and loading performance of the air filter component.
  • An aspect of the present application is to provide an air filter component, the air filter component is made of a sheet including at least a first sheet layer and a second sheet layer stacked on each other.
  • the air filter component includes: a filter portion including a first wave portion and a second wave portion; and a periphery portion formed integrally with the filter portion as a generally flat border surrounding the filter portion.
  • the first wave portion and second wave portion are on opposite sides of the periphery portion in a thickness direction of the air filter component, a maximum distance between the first wave portion and a top surface of the periphery portion in the thickness direction is defined as a first distance, and a maximum distance between the second wave portion and a bottom surface of the periphery portion in the thickness direction is defined as a second distance.
  • the first sheet layer is on an external facing side of the air filter component and the second sheet layer is on an internal facing side of the air filter component, a fiber diameter of the first sheet layer is larger than a fiber diameter of any one of the other layers of the sheet, and the first distance is less than the second distance.
  • the first wave portion includes multiple first protrusions equally spaced apart from each other in a first direction, the multiple first protrusions extend in a direction transverse to the first direction, and both opposite ends of each first protrusion extend to the periphery portion.
  • the second wave portion includes multiple second protrusions equally spaced from each other in the first direction, the multiple second protrusions extend in a direction transverse to the first direction, and both opposite ends of each second protrusion extend to the periphery portion.
  • the second protrusions are arranged to be staggered with the first protrusions.
  • the periphery portion is formed to include: multiple first sections equally spaced to each other in the first direction, where a top surface of the first sections forms the top surface of the periphery portion, and each first protrusion extends to corresponding first sections; multiple second sections equally spaced to each other in the first direction, where a bottom surface of the second sections forms the bottom surface of the periphery portion, and each second protrusion extends to corresponding second sections; and multiple third sections between the multiple first sections and the multiple second sections and connecting the first sections and the second sections.
  • a length of the first section is less than a length of the second section in the first direction.
  • the air filter component is bent so that the multiple second sections are arrayed in an arc.
  • the periphery portion is formed by one or more of the following methods: thermal fusion, laser fusion, ultrasonic fusion, vibration fusion, and infrared fusion.
  • the sheet further includes one or more intermediate sheet layers between the first sheet layer and the second sheet layer.
  • a fiber diameter of the one or more intermediate sheet layers is between the fiber diameter of the first sheet layer and the fiber diameter of the second sheet layer.
  • a ratio of the first distance to the second distance is equal to or less than 0.25.
  • the thickness of the air filter component is 15mm, and the first distance is equal to or less than 3mm.
  • a filter cartridge is provided according to another aspect of the present application.
  • the filter cartridge includes a housing, and the filter cartridge further includes an air filter component according to the present application.
  • the air filter component is mounted in the housing.
  • the air filter component is mounted in the housing via a support member, and the periphery portion of the air filter component is coupled to a periphery wall of the support member.
  • the periphery wall of the support member is provided with multiple arc-shaped portions, and the air filter component is mounted in the support member so that each first protrusion of the first wave portion corresponds to corresponding arc-shaped portions.
  • the air filter component is mounted so that the second wave portion of the air filter component is spaced from a bottom wall of the housing.
  • a respirator is provided according to yet another aspect of the present application.
  • the respirator includes a respirator body, and further includes a filter cartridge according to the present application.
  • a filter portion of the air filter component is formed integrally with the periphery portion, the first sheet layer with the larger fiber diameter is located on the external facing side, while the second sheet layer with the smaller fiber diameter is located on the internal facing side.
  • the filter portion is corrugated, the shape of the filter portion is maintained by the periphery portion, and the periphery portion is formed above the mid-plane of the filter portion, which may improve the loading performance of the air filter component, reduce the pressure drop of the air flowing through the air filter component, and improve the air permeability of the air filter component.
  • it is possible to improve the wearing comfort while improving the filtration performance of the air filter component and the filter cartridge and respirator equipped with the air filter component.
  • FIG. 1 shows an exploded perspective view of a respirator according to an embodiment of the present application
  • FIG. 2 shows a perspective view of an air filter component of the respirator shown in FIG. 1 according to the present application
  • FIG. 3 shows a schematic diagram of manufacturing the air filter component shown in FIG. 2;
  • FIG. 4 shows a schematic partial cross-sectional view taken along the cutting line A-A' in FIG. 2;
  • FIG. 5 shows a schematic cross-sectional view similar to FIG. 4, in which the air filter component is bent
  • FIG. 6 shows an exploded perspective view of the filter cartridge shown in FIG. 1;
  • FIG. 7 shows the installation of the air filter component in the support member
  • FIGs. 8A-8C show the schematic diagrams of the air filter components with welding planes at different positions
  • FIGs. 9-11 show the results of the first test on the air filter components.
  • FIGs. 12-14 show the results of the second test on the air filter components.
  • FIG. 1 shows an exploded perspective view of a respirator according to an embodiment of the present application.
  • the respirator 1 includes a respirator body 30 and a filter cartridge 50.
  • the filter cartridge 50 is mounted to the respirator body 30 through the installation interface 30a on the respirator body 30, and communicates with the inside of the respirator body 30 through the installation interface 30a, so that the wearer may inhale the clean air filtered by the filter cartridge 50 through the installation interface 30a.
  • the respirator 1 can be worn to the head of the user via the belt 40.
  • the respirator body 30 covers at least the nose and mouth area of the wearer, and the filter cartridge 50 is located at the side or front position of the nose and mouth of the wearer.
  • the filter cartridge 50 includes a housing 20 and an air filter component 10 mounted in the housing 20.
  • FIG. 2 shows a perspective view of the air filter component 10.
  • the air filter component 10 includes a periphery portion 100 and a filter portion 130 that are integrally formed.
  • the periphery portion 100 is formed as a substantially flat boundary surrounding the filter portion 130.
  • the filter portion 130 protrudes respectively from opposite sides of the periphery portion 100 in a thickness direction of the air filter component 10 (the z direction in the FIG. 2) .
  • the filter portion 130 includes a first wave portion 131 and a second wave portion 132, the first wave portion 131 and the second wave portion 132 are respectively located on opposite sides of the periphery portion 100 in the thickness direction of the air filter component 10.
  • the first wave portion 131 is located on the external facing side of the periphery portion 100 (that is, the side facing the external environment, that is, the air inflow side)
  • the second wave portion 132 is located on the internal facing side of the periphery portion 100 (i.e., the side facing the wearer, that is, the clean air outflow side) .
  • the first wave portion 131 is located on the upper side of the periphery portion 100
  • the second wave portion 132 is located on the lower side of the periphery portion 100.
  • the first wave portion 131 includes multiple first protrusions 131a that are equally spaced apart from each other in a first direction (the x direction in FIG. 2) of the air filter component 10.
  • the multiple first protrusions 131a are arranged at equal distances along the first direction and extend along a second direction (the y direction in FIG. 2) transverse to the first direction, and the opposite ends of each first protrusion 131a extend to the periphery portion 100.
  • the second wave portion 132 includes multiple second protrusions 132a that are equally spaced apart from each other in the first direction.
  • the multiple second protrusions 132a are arranged at equal distances with each other along the first direction (the x direction in FIG. 2) and extend along the second direction (the y direction in FIG.
  • each second protrusion 132a extends to the periphery portion 100.
  • the multiple first protrusions 131a and the multiple second protrusions 132a are arranged alternately with each other in the first direction.
  • the present disclosure is not limited thereto. In other embodiments according to the present application, the first protrusion 131a and the second protrusion 132a may be aligned with each other.
  • FIG. 3 shows a schematic diagram of manufacturing the air filter component 10.
  • the air filter component 10 may be made of a sheet M.
  • the sheet M may be a multilayer structure formed of multiple fiber layers having different fiber diameters.
  • the longitudinal length of the sheet M is determined according to the size of the air filter component 10 to be manufactured, and the sheet M with a predetermined length is folded along its longitudinal direction (x direction in FIG. 3) to form a wave shape.
  • a first boundary line A1 and a second boundary line A2 parallel to a longitudinal direction of the sheet M are defined according to the size of the filter portion 130 of the air filter component 10.
  • the first boundary line A1 and the second boundary line A2 divide the area of the sheet M between a first longitudinal end M1 and a second longitudinal end M2 into a first part M3 outside the first boundary line A1, a second part M4 outside the second boundary line A2 and a third part M5 between the first part M3 and the second part M4.
  • the third part M5 corresponds to the filter portion 130 of the air filter component 10
  • the first longitudinal end M1, the second longitudinal end M2, the first part M3, and the second part M4 correspond to the periphery portion 100 of the air filter component 10.
  • the first longitudinal end M1, the second longitudinal end M2, the first part M3 and the second part M4 of the sheet M are thermally pressed or ultrasonically welded to the welding plane H1, so that the bonding fibers in these parts are melted and combined into a substantially flat border with a closed contour, which surrounds the third part M5 and may keep the wave shape of the third part M5.
  • the welding plane H1 is located above a midplane H0 of the wave portion of the sheet M.
  • the midplane H0 of the wave portion of the sheet M is a plane located at the middle height of the entire height of the wave portion of the sheet M.
  • the welding plane H1 and the first longitudinal end M1 intersect at a line P1, and the welding plane H1 and the second longitudinal end M2 intersect at a line P2.
  • the air filter component 10 shown in FIG. 2 is formed.
  • the border formed by the first longitudinal end M1, the second longitudinal end M2, the first part M3 and the second part M4 constitutes the periphery portion 100 of the air filter component 10, and the third part M5 forms the filter portion 130 of the air filter component 10.
  • the part of the third part M5 located above the welding plane H1 forms the first wave portion 131 of the filter portion 130
  • the part of the third part M5 located below the welding plane H1 forms the second wave portion 132 of the filter portion 130.
  • the wave shape of the filter portion 130 of the air filter component 10 is maintained by the periphery portion 100 without using an additional adhesive, thereby avoiding toxicity due to the use of the adhesive. Therefore, the manufacturing cost of the air filter component 10 may be reduced, and the use safety of the air filter component 10 may be improved.
  • FIG. 4 shows a schematic partial cross-sectional view of the air filter component 10 taken along the cutting line A-A' in FIG. 2, showing the structure of the periphery portion 100 of the air filter component 10.
  • the sheet M used to manufacture the air filter component 10 has a multi-layer structure formed of multiple fiber layers having different fiber diameters, which includes at least a first sheet layer and a second sheet layer superimposed on each other, and the first sheet layer and the second sheet layer are made of different materials.
  • the sheet M may further include one or more intermediate sheet layers sandwiched between the first sheet layer and the second sheet layer.
  • the sheet M includes a first sheet layer 111a, a second sheet layer 111c, and an intermediate sheet layer 111b sandwiched between the first sheet layer 111a and the second sheet layer 111c.
  • the first sheet layer 111a is made of a thick fiber material with a larger fiber diameter
  • the second sheet layer 111c is made of a thin fiber material with a smaller fiber diameter.
  • the fiber diameter of the intermediate sheet layer 111b is between the fiber diameter of the first sheet layer 111a and the fiber diameter of the second sheet layer 111c.
  • a sheet layer with a larger fiber diameter has a better aerosol loading performance
  • a sheet layer with a smaller fiber diameter has a better filtration performance.
  • the sheet layer with a smaller fiber diameter determines the filtering performance of the air filter component 10
  • the sheet layer with a larger fiber diameter determines the aerosol loading performance of the air filter component 10.
  • the fiber diameter of the first sheet layer 111a is 20 micrometers
  • the fiber diameter of the second sheet layer 111c is 8.5 micrometers.
  • the first sheet layer 111a is located on the external facing side of the air filter component 10 (i.e., the side facing the external environment)
  • the second sheet layer 111c is located on the internal facing side of the air filter component 10 (i.e., the side facing the wearer) .
  • Each sheet layer of the sheet M is electrostatically charged to effectively capture aerosols in the air.
  • the air to be filtered flows into the air filter component 10 from the first sheet layer 111a, and the clean air filtered by the air filter component 10 flows from the second sheet layer 111c to the nose and mouth area of the wearer, as shown by arrow K1 in FIG. 4.
  • the periphery portion 100 includes multiple first sections 121, multiple second sections 122, and multiple third sections 123 connecting the first sections 121 and the second sections 122.
  • the multiple first sections 121 are spaced apart from each other by a distance d2, and respectively correspond to the multiple first protrusions 131a of the first wave portion 131.
  • the multiple first sections 121 are all flat sections, and the top surfaces of the multiple first sections 121 form the top surface of the periphery portion 100.
  • the multiple first protrusions 131a are arranged to be spaced apart from each other at a distance d1 along the first direction (the x direction in FIG. 4) , and extend along the second direction (the y direction in FIG.
  • each first protrusion 131a respectively extend to the corresponding first sections 121 of the periphery portion 100.
  • the multiple second sections 122 are spaced apart from each other at a distance d3, and respectively correspond to the multiple second protrusions 132a of the second wave portion 132.
  • the multiple second sections 122 are flat sections, and the bottom surfaces of the second sections 122 form the bottom surface of the periphery portion 100.
  • Multiple second protrusions 132a are spaced apart from each other in the first direction (the x direction in FIG. 4) , and extend in the second direction (the y direction in FIG.
  • each second protrusion 132a respectively extend to the corresponding second sections 122 of the periphery portion 100.
  • the length of the first section 121 in the first direction (the x direction in FIG. 4) is smaller than the length of the second section 122.
  • the maximum distance between the top surface of the periphery portion 100 and the first wave portion 131 (i.e., the maximum distance between the top surface of the first section 121 and the top of the first protrusion 131a) is defined as a first distance L1
  • the maximum distance between the bottom surface of the periphery portion 100 and the second wave portion 132 (i.e., the maximum distance between the bottom surface of the second section 122 and the bottom of the second protrusion 132a) is defined as a second distance L2 . Since the welding plane H1 is located above the midplane H0, the first distance L1 is smaller than the second distance L2.
  • the ratio of the first distance L1 to the second distance L2 is equal to or less than 0.25.
  • the thickness of the air filter component 10 (the sum of the first distance L1, the second distance L2, and the thickness of the periphery portion 100) is 15 mm, and the first distance L1 is equal to or less than 3 mm.
  • the first sheet layer 111a with a larger fiber diameter is located on the external facing side (air inflow side)
  • the second sheet layer 111c with a smaller fiber diameter is located on the internal facing side (clean air outflow side)
  • the wave shape of the filter portion 130 is maintained by the periphery portion 100 without using additional adhesive
  • the periphery portion 100 is formed to be located above the midplane H0
  • the first distance L1 is smaller than the second distance L2, which may improve the loading performance of the air filter component 10, reduce the pressure drop of the air flowing through the air filter component 10, and improve the air permeability of the air filter component 10.
  • the air filter component 10 is flexible and bendable, and may be bent to fit the shape of the filter cartridge where the air filter component 10 is to be mounted.
  • FIG. 5 shows a bent air filter component 10.
  • the air filter component 10 is bent so that the distance d1 between adjacent first protrusions 131a of the first wave portion 131 is increased, and the distance d2 between adjacent first sections 121 of the periphery portion 100 is increased, while the second sections 122 of the periphery portion 100 are arranged in an arc shape, and the distance d3 between adjacent second sections 122 is reduced.
  • adjacent second sections 122 are connected to each other to form an arc shape.
  • FIG. 6 shows an exploded perspective view of the filter cartridge 50 with the air filter component 10 mounted.
  • the housing 20 of the filter cartridge 50 includes a lower housing 21 and an upper housing 22 hinged to each other, the upper housing 22 may pivot relative to the lower housing 21 about a hinge line h to open or close the housing 20.
  • the lower housing 21 includes a bottom wall 211 and a periphery wall 212 surrounding the bottom wall 211.
  • the bottom wall 211 is provided with a through hole 21a and a mounting portion 21b surrounding the through hole 21a.
  • the mounting portion 21b may be mounted to the mounting interface 30a (see FIG. 1) on the respirator body 30 of the respirator 1 to mount the filter cartridge 50 to the respirator body 30.
  • the inner peripheral surface of the periphery wall 212 is provided with a boss portion 2121, and the outer circumference of the periphery wall 212 is provided with a locking protrusion 21c.
  • the upper surface of the upper housing 22 is provided with multiple vent holes 221, and ambient air enters the filter cartridge through the vent holes 221 to be filtered by the air filter component 10.
  • the outer periphery of the periphery wall of the upper housing 22 is provided with a locking recess 22a that can be engaged with the locking protrusion 21c.
  • the upper housing 22 may pivot about the hinge line h toward the lower housing 21, and the locking protrusion 21c on the lower housing 21 fits into the locking recess 22a on the upper housing 22, thereby locking the air filter component 10 in the housing 20.
  • the second wave portion 132 of the air filter component 10 is spaced apart from the bottom wall 211 of the lower housing 21, so as to facilitate the clean air, which is filtered by the air filter component 10, to flow to the inner side of the respirator body 30 through the through hole 21a of the lower housing 21, and for the wearer to inhale.
  • the second wave portion 132 of the air filter component 10 is spaced apart from the bottom wall 211 of the lower housing 21 by 2.5 mm.
  • the air filter component 10 is mounted in the housing 20 of the filter cartridge 50 via a support member 60.
  • the support member 60 includes a periphery wall 61 and a flange portion 62 extending laterally outward from the lower end portion of the periphery portion 61.
  • the inner periphery of the periphery wall 61 substantially corresponds to the boundary of the filter portion 130 of the air filter component 10.
  • the support member 60 may be formed or mounted to the air filter component 10 such that at least the first wave portion 131 of the air filter component 10 is located in the periphery wall 61 of the support member 60.
  • the top surface of the periphery portion 100 of the air filter component 10 is coupled to the periphery wall 61 of the support member 60, for example, to the lower end portion of the periphery wall 61, so that the first wave portion 131 of the air filter component 10 is located in the periphery wall 61.
  • two opposite side walls of the periphery wall 61 of the support member 60 are each provided with multiple arc-shaped portions 611.
  • each first protrusion 131a of the first wave portion 131 of the air filter component 10 is respectively aligned with the corresponding arc-shaped portion 611, as shown in FIG. 7.
  • the shape of the air filter component 10 can be maintained, and the distance between the adjacent first protrusions 131a can be kept constant, so that the performance of the air filter component 10 is stable.
  • the arc-shaped portion 611 is optional.
  • the periphery wall 61 of the support member 60 may be provided without the arc-shaped portion 611 described above.
  • the flange portion 62 of the support member 60 may be mounted to the boss portion 2121 of the lower housing 21.
  • the air filter component 10 may be directly mounted in the housing 20 of the filter cartridge 50.
  • the periphery portion 100 of the air filter component 10 may rest on the boss portion 2121 of the lower housing 21 without using the support member 60.
  • the test on the air filter component is described as follows. In the test described below, a plurality of air filter components are tested, respectively, on the initial pressure drop (abbreviated as Ini PD hereinafter) , the loading maximum penetration (abbreviated as Max PEN hereinafter) and the Quality Factor (abbreviated as QF hereinafter) .
  • Ini PD of the air filter component is a pressure difference generated in air flowing through the air filter component at a given flow rate.
  • the Max PEN of the air filter component is a penetration rate of the pollution contained in the air flowing through the air filter component at a given flow rate.
  • QF can be calculated from the Ini PD and the Max PEN according to the following formula:
  • Figures 8A-8C show the schematic diagrams of the air filter components with welding plane H1 at different positions.
  • Figure 8A shows the air filter component with high welding plane, in which the welding plane H1 is located above the midplane H0 of the air filter component, and the first distance L1 between the first wave portion 131 and the periphery portion of the air filter component in the thickness direction (i.e., the maximum distance between the first wave portion 131 and the welding plane H1 in the thickness direction) is smaller than the second distance L2 between the second wave portion 132 and the periphery portion of the air filter component in the thickness direction (i.e., the maximum distance between the second wave portion 132 and the welding plane H1 in the thickness direction) .
  • Figure 8B shows the air filter component with middle welding plane, in which the welding plane H1 is located at the midplane H0 of the air filter component, and the first distance L1 between the first wave portion 131 and the periphery portion of the air filter component is equal to the second distance L2 between the second wave portion 132 and the periphery portion of the air filter component.
  • Figure 8C shows the air filter component with low welding plane, in which the welding plane H1 is located below the midplane H0 of the air filter component, and the first distance L1 between the first wave portion 131 and the periphery portion of the air filter component is larger than the second distance L2 between the second wave portion 132 and the periphery portion of the air filter component.
  • the tested air filter components have similar configuration, with difference only in the position of the welding plane H1.
  • the air filter component with low welding plane has the maximal Ini PD
  • the air filter component with high welding plane has the minimum Ini PD
  • the air filter component with middle welding plane has the middle Ini PD therebetween.
  • the Ini PD of the air filter component with high welding plane decrease significantly, as shown by the arrow in figure 9.
  • the smaller the Ini PD the better the breathability and wearing comfort.
  • the air filter component with high welding plane has a better breathability and wearing comfort.
  • the tested three air filter components have similar Max PEN. Thereby, the QF of the air filter component that is calculated from the Ini PD and the Max PEN as above will increase as the decrease of the Ini PD.
  • the air filter component with high welding plane has the maximum QF
  • the air filter component with low welding plane has the minimum QF
  • the air filter component with middle welding plane has the middle QF therebetween.
  • the higher the QF at a given flow rate the better the filtering performance of the air filter component.
  • the QF of the air filter component with high welding plane increase significantly, as shown by the arrow in figure 11, thus the filtering performance of the air filter component with high welding plane increase significantly.
  • results of above first and second tests show that with the location of the welding plane above the midplane of the air filter component, and preferably as close as possible to the top of the air filter component, the wearing comfort of the air filter component can be improved meanwhile improving the filtering performance.
  • the air filter component is integrally formed from the sheet M such that the sheet layer with larger fiber diameter is located on the external facing side, while the sheet layer with smaller fiber diameter is located on the internal facing side.
  • the filter portion 130 is in a wave shape, and the wave shape of the filter portion 130 is maintained by the periphery portion 100 surrounding the filter portion 130, and there is no need to additionally use an adhesive to maintain the shape of the filter portion 130, therefore, the manufacturing of the air filter component 10 can be simplified, the cost can be reduced, any toxicity caused by using the adhesive can be avoided, and the use safety of the air filter component can be improved.
  • the periphery portion 100 in a plane located above the middle plane of the filter portion 130, preferably, forming the periphery portion 100 close to the top end of the filter portion 130, the loading performance of the air filter component 10 can be improved, the pressure drop of the air flowing through the air filter component 10 can be reduced, and the air permeability of the air filter component 10 can be improved. As a result, it is possible to improve the wearing comfort while improving the filtering performance of the air filter component 10.
  • the outer contour of the air filter component 10 is generally rectangular. However, the present disclosure is not limited thereto. In other embodiments according to the present disclosure, the air filter component 10 may also have outer contours of other shapes. For example, in one example, the air filter component 10 may be formed to have an outer contour in the shape of a circle, an ellipse, a hexagon, etc., so as to be suitable for different types of filter cartridges and respirators.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Pulmonology (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

La présente demande concerne un composant de filtre à air, une cartouche filtrante et un respirateur. Le composant de filtre à air est constitué d'une feuille, comprenant : une partie de filtre comprenant une première partie d'onde et une seconde partie d'onde ; et une partie périphérique formée d'un seul tenant avec la partie de filtre sous la forme d'une bordure généralement plate entourant la partie de filtre. La première partie d'onde et la seconde partie d'onde se trouvent sur des côtés opposés de la partie périphérique, une distance maximale entre la première partie d'onde et une surface supérieure de la partie périphérique est définie en tant que première distance, et une distance maximale entre la seconde partie d'onde et une surface inférieure de la partie périphérique est définie en tant que seconde distance. La première couche de feuille de la feuille se trouve sur un côté de face externe du composant de filtre à air et la seconde couche de feuille de la feuille se trouve sur un côté de face interne du composant de filtre à air, un diamètre de fibre de la première couche de feuille est supérieur à un diamètre de fibre de l'une quelconque des autres couches de la feuille, et la première distance est inférieure à la seconde distance. Le composant de filtre à air, la cartouche filtrante et le respirateur équipé du composant de filtre à air selon la présente divulgation peuvent améliorer les performances de filtre et améliorer en même temps la sécurité et le confort de port.
PCT/CN2022/071907 2022-01-14 2022-01-14 Composant de filtre à air, cartouche filtrante et respirateur WO2023133779A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202280088936.7A CN118715052A (zh) 2022-01-14 2022-01-14 空气过滤器部件、滤筒和呼吸器
KR1020247025038A KR20240136354A (ko) 2022-01-14 2022-01-14 공기 필터 구성 요소, 필터 카트리지 및 호흡기
PCT/CN2022/071907 WO2023133779A1 (fr) 2022-01-14 2022-01-14 Composant de filtre à air, cartouche filtrante et respirateur

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Application Number Priority Date Filing Date Title
PCT/CN2022/071907 WO2023133779A1 (fr) 2022-01-14 2022-01-14 Composant de filtre à air, cartouche filtrante et respirateur

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0634719U (ja) * 1992-10-20 1994-05-10 日本バイリーン株式会社 フィルタ
CN102458584A (zh) * 2009-05-22 2012-05-16 3M创新有限公司 具有遮蔽使用寿命指示器的盖的滤盒
JP2012152706A (ja) * 2011-01-27 2012-08-16 Toyota Boshoku Corp 濾材及びその製造方法
CN103237584A (zh) * 2010-11-22 2013-08-07 依赫玛过滤器有限公司 同时具有两种作用机制的空气过滤介质
US20140174046A1 (en) * 2012-12-21 2014-06-26 Roki Co., Ltd. Filter element
CN104226026A (zh) * 2013-06-13 2014-12-24 日本无机株式会社 空气过滤器
CN109641169A (zh) * 2016-08-26 2019-04-16 3M创新有限公司 包括具有边缘挡板的褶皱型过滤介质的褶皱型过滤元件以及制造和使用方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0634719U (ja) * 1992-10-20 1994-05-10 日本バイリーン株式会社 フィルタ
CN102458584A (zh) * 2009-05-22 2012-05-16 3M创新有限公司 具有遮蔽使用寿命指示器的盖的滤盒
CN103237584A (zh) * 2010-11-22 2013-08-07 依赫玛过滤器有限公司 同时具有两种作用机制的空气过滤介质
JP2012152706A (ja) * 2011-01-27 2012-08-16 Toyota Boshoku Corp 濾材及びその製造方法
US20140174046A1 (en) * 2012-12-21 2014-06-26 Roki Co., Ltd. Filter element
CN104226026A (zh) * 2013-06-13 2014-12-24 日本无机株式会社 空气过滤器
CN109641169A (zh) * 2016-08-26 2019-04-16 3M创新有限公司 包括具有边缘挡板的褶皱型过滤介质的褶皱型过滤元件以及制造和使用方法

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