WO2018082694A1 - 呼吸过滤装置 - Google Patents

呼吸过滤装置 Download PDF

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Publication number
WO2018082694A1
WO2018082694A1 PCT/CN2017/109543 CN2017109543W WO2018082694A1 WO 2018082694 A1 WO2018082694 A1 WO 2018082694A1 CN 2017109543 W CN2017109543 W CN 2017109543W WO 2018082694 A1 WO2018082694 A1 WO 2018082694A1
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WO
WIPO (PCT)
Prior art keywords
outer frame
inner frame
air
filtering device
respiratory
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PCT/CN2017/109543
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English (en)
French (fr)
Inventor
饶彬
Original Assignee
饶彬
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.)
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Publication date
Priority claimed from CN201610976272.4A external-priority patent/CN106512253A/zh
Priority claimed from CN201621199700.9U external-priority patent/CN206252748U/zh
Priority claimed from CN201621199707.0U external-priority patent/CN206252749U/zh
Priority claimed from CN201621199706.6U external-priority patent/CN206252747U/zh
Priority claimed from CN201621200812.1U external-priority patent/CN206252750U/zh
Application filed by 饶彬 filed Critical 饶彬
Publication of WO2018082694A1 publication Critical patent/WO2018082694A1/zh

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes
    • A62B23/06—Nose filters
    • 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
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B9/00—Component parts for respiratory or breathing apparatus
    • A62B9/06—Mouthpieces; Nose-clips

Definitions

  • the present invention relates to respiratory devices, and more particularly to a respiratory filtering device.
  • Existing wearable breathing filter devices mainly include various masks, nasal masks and the like. Most of the existing devices are directly made of filter materials, such as N95 masks. Such a breathing filter device has two defects: one is not easy to fix when worn, resulting in poor filtering effect, and the second is often only one-time use, which is discarded after use, resulting in material waste and environmental pollution. In addition, the filter material of some improved breathing filter devices can be replaced, but the filter material is not easily replaced due to the complicated structure.
  • the invention provides a respiratory filtering device comprising:
  • An inner frame wherein the inner frame is a hollow structure, an air passage is formed inside the hollow structure, and at least one inner vent hole is disposed on a side wall of the inner frame;
  • An outer frame surrounding the inner frame and having at least one outer vent hole disposed on a side wall thereof;
  • At least one layer of filter material disposed between the inner frame and the outer frame.
  • the filter material layer is an activated carbon layer, a PM2.5 filter film or a nonwoven fabric layer.
  • the outer frame encloses the inner frame from a side of the inner frame.
  • the outer frame has a U-shaped cross section.
  • the outer frame is detachable from the inner frame.
  • the air passage is in communication with the exterior of the respiratory filtering device through a passage outlet.
  • the inner frame and the outer frame are both curved shapes.
  • the respiratory filtering device further comprises a nasal mask, the nasal mask comprising:
  • a nose-shaped housing the top of the nose-shaped housing is provided with an air inlet, the bottom is provided with an air outlet, and an air passage is formed between the air inlet and the air outlet, and the air passage is in communication with the air passage;
  • An intake check valve disposed at the air inlet to allow air to enter the air passage from the air passage;
  • An outlet check valve is disposed at the air outlet to allow air to flow from the air passage to the outside of the nasal mask.
  • the respiratory filtering device further includes a pair of lenses symmetrically disposed on opposite sides of the nose-shaped housing, the lens being fixed to the outer frame and/or the card by snapping Nasal shell.
  • the two sides of the nose-shaped casing are respectively provided with side engaging grooves, and the bottom of the outer frame is provided with a bottom engaging groove, and the lens is engaged by the side engaging groove and the bottom engaging groove. fixed.
  • the outlet check valve is a movable valve that can be opened toward the outside of the nasal mask.
  • the respiratory filtering device further comprises a bottom cover disposed outside the outlet check valve, the bottom cover being permeable to air.
  • the intake check valve includes a gas permeable top bracket and a gas impermeable active valve disposed inside the top bracket.
  • the outer frame includes a first outer frame and a second outer frame that are connected together in a plugged form, the inner frame including a first inner frame and a second inner frame that are connected together in a plugged manner, The first outer frame and the second outer frame respectively surround the first inner frame and the second inner frame.
  • the outer frame includes a U-shaped portion and a flat plate portion that are coupled together in a snap-fit manner.
  • the structure of the filter material layer is fixed by the inner and outer frames, the structure is simple, and it is easy to fix when worn;
  • the outer frame can adopt an open structure, which surrounds the inner frame from one side of the inner frame, facilitating the inner frame The frame is removed and the filter material layer is easily replaced;
  • Both inner and outer frames can be designed in a curved shape to improve wearing comfort
  • (4) can be connected with a nasal mask having a one-way valve to form a nasal mask type breathing filter device;
  • FIG. 1 shows a perspective view of a respiratory filtering device in accordance with an exemplary embodiment
  • FIG. 2 shows a partial perspective view of an inner frame of a respiratory filtering device, in accordance with an exemplary embodiment
  • FIG. 3 shows a partial perspective view of an outer frame of a respiratory filtering device, in accordance with an exemplary embodiment
  • FIG. 4 shows a perspective view of a respiratory filtering device with a nasal mask, in accordance with an exemplary embodiment
  • Figure 5 shows a perspective view of a nasal mask in accordance with an exemplary embodiment
  • Figure 6 shows a perspective view of another angle of the nasal mask in accordance with an exemplary embodiment
  • Figure 7 shows a perspective view of a bottom cover of a respiratory filtering device, in accordance with an exemplary embodiment
  • Figure 8 shows a schematic view of a top bracket of a respiratory filtering device, in accordance with an exemplary embodiment
  • Figure 9 shows a schematic view of a movable valve of a respiratory filtration device, in accordance with an exemplary embodiment
  • FIG. 10 shows a perspective view of a respiratory filtering device in accordance with another exemplary embodiment.
  • FIG. 1 shows a perspective view of a respiratory filtering device according to an exemplary embodiment
  • FIG. 2 shows a partial perspective view of an inner frame of a respiratory filtering device according to an exemplary embodiment
  • FIG. 3 shows an outer frame of a respiratory filtering device according to an exemplary embodiment. Partial perspective view.
  • a respiratory filtering device includes:
  • the inner frame 11, the inner frame 11 is a hollow structure, an air passage 10 is formed inside the hollow structure, and at least one inner vent hole 13 is disposed on the side wall of the inner frame 11;
  • the outer frame 12 surrounds the inner frame 11 and is provided with at least one outer venting hole 14 on the side wall thereof;
  • At least one layer of filter material 16 is disposed between the inner frame 11 and the outer frame 12.
  • the respiratory filtering device can be connected to the user's respiratory tract, such as the nose or mouth, through a conduit or other air passage.
  • the air enters from the outer vent hole 14 and is then filtered through the filter material layer 16, and then flows through the inner vent hole 13 to the user's respiratory tract to achieve the function of respiratory filtration.
  • the respiratory filter device of the embodiment adopts an inner and outer frame to fix the filter material layer, has a simple structure, and is easy to fix when worn.
  • the filter material layer 16 may be an activated carbon layer, a PM2.5 filter film or a nonwoven fabric layer capable of filtering dust and fine particles.
  • the inner frame 11 and the outer frame 12 are preferably made of a material such as plastic, nylon, resin or the like.
  • the outer frame 12 surrounds the inner frame 11 from one side of the inner frame 11, such that the outer frame 12 is easily detached from the inner frame 11, facilitating replacement of the filter material layer 16, or cleaning of the inner frame 11 and outer frame 12.
  • the filter material layer 16 can be periodically replaced to reuse the respiratory filter device to save material and avoid waste contamination.
  • the outer frame 12 has a U-shaped cross section, and as shown in Fig. 4, the outer frame 12 of the U-shaped cross section is easier to disassemble.
  • the cross section of the outer frame 12 can also be designed in other shapes depending on actual needs.
  • the air passage 10 communicates with the exterior of the breathing filter device through the passage outlet 15 such that filtered clean air within the air passage 10 can exit through the passage outlet 15 and through the conduit to the user's respiratory tract.
  • the inner frame 11 and the outer frame 12 are both curved.
  • different curved shapes are designed to meet the actual needs.
  • the respiratory filtering device is designed as a wavy curve that is suitable for being paired into a pair of temples (see Figure 4) that does not affect the user while wearing the cap.
  • the outer frame 12 includes a first outer frame and a second outer frame that are connected together in a plugged form
  • the inner frame 11 includes a first inner frame and a second inner frame that are connected together in a plugged manner, first The outer frame and the second outer frame respectively surround the first inner frame and the second inner frame.
  • the outer frame 12 includes a U-shaped portion and a flat plate portion joined together in a snap-fit manner, and the flat plate portion closes the opening of the U-shaped portion.
  • this snap-fit structure it is easy to remove the outer frame 12, take out the inner frame 12 therein and the layer of filter material disposed between the inner frame 13 and the outer frame 11.
  • FIG. 4 shows a perspective view of a respiratory filtering device with a nasal mask
  • FIG. 5 shows a perspective view of a nasal mask according to an exemplary embodiment
  • FIG. 6 shows another angle of the nasal mask according to an exemplary embodiment, according to an exemplary embodiment.
  • Stereo picture
  • the respiratory filtering device further comprises a nasal mask, the nasal mask comprising:
  • the nose-shaped casing 1, the top of the nose-shaped casing 1 is provided with an air inlet 3, the bottom is provided with an air outlet 4, and an air passage 2 is formed between the air inlet 3 and the air outlet 4, and the air passage 2 is connected with the air passage 10. ;
  • An intake check valve 5, disposed at the intake port 3, allows air to enter the air passage 2 from the air passage 10;
  • the air outlet check valve 6 is disposed at the air outlet 4 to allow air to flow from the air passage 2 to the outside of the nasal mask.
  • the user presses the nose piece 1 against the nose, at which time the airway 2 is located between the nose piece 1 and the nose of the user.
  • the intake check valve 5 is opened, and the air outlet check valve 6 is closed, so that the air in the air passage 10 enters the air through the intake check valve 5.
  • Road 2 and finally reach the user's nostrils.
  • the gas pressure in the airway 2 increases, the intake check valve 5 closes, and the air outlet check valve 6 opens, so that the gas in the air passage 2 flows through the air outlet check valve 6 to the nasal mask. external.
  • the nasal mask type breathing filter device has a simple structure and comfortable wearing; an air passage is formed between the air inlet and the air outlet of the nasal shell of the nasal mask, and when the user wears the nasal mask, the air passage is realized along the nose of the user.
  • the intake check valve and the outlet check valve respectively at the air inlet and the air outlet the air always enters the nasal mask through the air inlet, and the nasal mask flows out through the air outlet, thereby avoiding secondary pollution of the exhaled gas. Filtered clean gas.
  • the outlet check valve 6 is a movable valve that can be opened toward the outside of the nasal mask to allow air to flow out. More preferably, the outlet check valve 6 is a V-shaped active valve with the opening of the V-shaped active valve facing the outside of the nasal mask.
  • the pressure of the gas in the air passage 2 increases. Under the action of pressure, the two sides of the V-shaped active valve close inward, that is, the V-shaped angle is reduced, the air outlet 4 is opened, and the gas can pass through the air outlet. 4 out of the nasal mask.
  • the outlet check valve 6 can be a movable valve of other shapes that can be opened and closed under pressure.
  • the breathing filter device further includes a bottom cover 20 disposed outside the outlet check valve 6, and the bottom cover 20 is permeable to air as shown in FIG.
  • the bottom cover 20 can be fixed to the bottom of the nose casing by snapping, and its main function is to protect the outlet check valve 6 from damage.
  • the intake check valve 5 includes a gas permeable top support 21 and a gas impermeable movable valve 22 disposed inside the top support 21.
  • the top support 21 and the movable valve 22 are respectively constructed as shown in FIG. 8 and 9 is shown.
  • a portion of the movable valve 22 is fixed to the inside of the top bracket 21, and in the embodiment, the central portion of the movable valve 22 is fixed to the inside of the top bracket 21.
  • a pressure-controlled check valve can be selected, and a pressure sensor is disposed in the air passage 2, when the pressure sensor detects an increase in pressure, The one-way valve is closed; when the pressure sensor detects a decrease in pressure, the one-way valve opens and the outside air enters the air passage.
  • the respiratory filtering device may also be connected to the user's airway by a conduit or other form of connecting device that can supply filtered clean air to the user.
  • FIG. 10 shows a perspective view of a respiratory filtering device according to another exemplary embodiment.
  • the respiratory filtering device further includes a pair of lenses 17 symmetrically disposed on both sides of the nose-shaped housing 1, the lens 17 is fixed to the outer frame 12 and the nose casing 1 by snapping.
  • the two sides of the nose-shaped casing 1 are respectively provided with side engaging grooves 18, and the bottom of the outer frame is provided with a bottom engaging groove 19, and the lens 17 is fixed by being caught by the side engaging groove 18 and the bottom engaging groove 19.
  • the user Prior to use, the user will snap the lens 17 to the outer frame and the nose casing 1.
  • the user wears a breathing filter device, the nose-shaped housing 1 is pressed against the nose, and the lens 17 blocks both eyes.
  • the breathing filter device is capable of protecting the eyes and nose of the user.
  • the nose-shaped housing, frame, and lens can be separately removed for easy storage.

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

Abstract

一种呼吸过滤装置，包括：内框架(11)，内框架(11)为中空结构，中空结构内部形成空气通道(10)，内框架(11)的侧壁上设置有至少一个内通气孔(13)；外框架(12)，包围内框架(11)，且其侧壁上设置有至少一个外通气孔(14)；至少一个过滤材料层(16)，设置于内框架(11)与外框架(12)之间。这种呼吸过滤装置易于佩戴固定，且便于更换过滤材料层。

Description

呼吸过滤装置 技术领域
本发明涉及呼吸设备，特别涉及一种呼吸过滤装置。
背景技术
现有的可穿戴式呼吸过滤装置主要包括各种口罩、鼻罩等。现有装置大多数直接采用过滤材料制成，例如N95口罩等。这样的呼吸过滤装置存在两方面缺陷：一是在佩戴时不易固定，导致过滤效果不佳，二是往往仅能一次性使用，用过即被抛弃，造成材料浪费和环境污染。此外，有些改进的呼吸过滤装置的过滤材料可以更换，但是由于结构复杂而导致过滤材料不易更换。
发明内容
本发明的目的是提供一种呼吸过滤装置，其能够克服现有呼吸过滤装置不易固定以及不便更换过滤材料的缺陷。
本发明提供一种呼吸过滤装置，包括：
内框架，所述内框架为中空结构，所述中空结构内部形成空气通道，所述内框架的侧壁上设置有至少一个内通气孔；
外框架，包围所述内框架，且其侧壁上设置有至少一个外通气孔；
至少一个过滤材料层，设置于所述内框架与外框架之间。
优选地，所述过滤材料层是活性炭层、PM2.5过滤膜或无纺布层。
优选地，所述外框架从所述内框架的一侧包围所述内框架。
优选地，所述外框架的横截面为U型。
优选地，所述外框架能够从所述内框架上拆卸下来。
优选地，所述空气通道通过通道出口与所述呼吸过滤装置的外部连通。
优选地，所述内框架与所述外框架均为曲线形状。
优选地，所述呼吸过滤装置还包括鼻罩，所述鼻罩包括：
鼻形壳体，所述鼻形壳体的顶部设置有进气口，底部设置有出气口，所述进气口与出气口之间形成气道，所述气道与所述空气通道连通；
进气单向阀，设置于所述进气口，允许空气从所述空气通道进入所述气道；以及
出气单向阀，设置于所述出气口，允许空气从所述气道流至所述鼻罩的外部。
优选地，所述呼吸过滤装置还包括一对镜片，所述一对镜片对称设置于所述鼻形壳体的两侧，所述镜片通过卡接方式固定于所述外框架和/或所述鼻形壳体。
优选地，所述鼻形壳体的两侧分别设有侧面卡接槽，所述外框架的底部设置底部卡接槽，所述镜片通过卡入所述侧面卡接槽和底部卡接槽进行固定。
优选地，所述出气单向阀为活动瓣膜，所述活动瓣膜能够朝向所述鼻罩的外部打开。
优选地，所述呼吸过滤装置还包括设置于所述出气单向阀外侧的底部盖板，所述底部盖板能够透气。
优选地，所述进气单向阀包括透气的顶部支架和设置于所述顶部支架内侧的不透气的活动瓣膜。
优选地，所述外框架包括以插接形式连接在一起的第一外框架和第二外框架，所述内框架包括以插接形式连接在一起的第一内框架和第二内框架，所述第一外框架和第二外框架分别包围所述第一内框架和第二内框架。
优选地，所述外框架包括以卡接形式连接在一起的U型部分和平板部分。
本发明的有益效果在于：
(1)采用内外框架固定过滤材料层的结构，结构简单，佩戴时易于固定；
(2)外框架可采用开放式结构，从内框架的一侧包围内框架，便于从内框 架上拆卸下来，易于更换过滤材料层；
(3)内外框架均可设计为曲线形状，提高佩戴舒适性；
(4)可与具有单向阀的鼻罩连接，形成鼻罩式呼吸过滤装置；
(5)通过在进气口和出气口分别设置进气单向阀和出气单向阀，使得空气始终通过进气口进入鼻罩，通过出气口流出鼻罩，当鼻罩与呼吸过滤装置、呼吸机等设备连接使用时，可以避免呼出的气体二次污染经过处理的洁净气体或者含药气体。
附图说明
通过结合附图对本发明示例性实施方式进行更详细的描述，本发明的上述以及其它目的、特征和优势将变得更加明显，其中，在本发明示例性实施方式中，相同的参考标号通常代表相同部件。
图1显示根据一个示例性实施例的呼吸过滤装置的立体图；
图2显示根据一个示例性实施例的呼吸过滤装置的内框架的局部立体图；
图3显示根据一个示例性实施例的呼吸过滤装置的外框架的局部立体图；
图4显示根据一个示例性实施例的带有鼻罩的呼吸过滤装置的立体图；
图5显示根据一个示例性实施例的鼻罩的立体图；
图6显示根据一个示例性实施例的鼻罩的另一个角度的立体图；
图7显示根据一个示例性实施例的呼吸过滤装置的底部盖板的立体图；
图8显示根据一个示例性实施例的呼吸过滤装置的顶部支架的示意图；
图9显示根据一个示例性实施例的呼吸过滤装置的活动瓣膜的示意图；
图10显示根据另一个示例性实施例的呼吸过滤装置的立体图。
主要附图标记说明：
1-鼻形壳体，2-气道，3-进气口，4-出气口，5-进气单向阀，6-出气单向阀，10-空气通道，11-内框架，12-外框架，13-内通气孔，14-外通气孔，15-通道出 口，16-过滤材料层，17-镜片，18-侧面卡接槽，19-底部卡接槽，20-底部盖板，21-顶部支架，22-活动瓣膜。
具体实施方式
下面将参照附图更详细地描述本发明的优选实施方式。虽然附图中显示了本发明的优选实施方式，然而应该理解，可以各种形式实现本发明而不应被这里阐述的实施方式所限制。相反，提供这些实施方式是为了使本发明更加透彻和完整，并且能够将本发明的范围完整地传达给本领域的技术人员。
图1显示根据示例性实施例的呼吸过滤装置的立体图，图2显示根据示例性实施例的呼吸过滤装置的内框架的局部立体图，图3显示根据示例性实施例的呼吸过滤装置的外框架的局部立体图。
如图1-3所示，根据示例性实施例的呼吸过滤装置包括：
内框架11，内框架11为中空结构，中空结构内部形成空气通道10，内框架11的侧壁上设置有至少一个内通气孔13；
外框架12，包围内框架11，且其侧壁上设置有至少一个外通气孔14；
至少一个过滤材料层16，设置于内框架11与外框架12之间。
使用时，该呼吸过滤装置可以通过管道或者其他空气通道连接至使用者的呼吸道，例如鼻部或口部。空气从外通气孔14进入，然后经过过滤材料层16过滤之后，再通过内通气孔13流动到使用者的呼吸道，达到呼吸过滤的作用。本实施例的呼吸过滤装置采用内外框架固定过滤材料层，结构简单，佩戴时易于固定。
作为优选方案，过滤材料层16可以是活性炭层、PM2.5过滤膜或无纺布层，能够过滤灰尘和微细颗粒。内框架11和外框架12优选地可采用塑料、尼龙、树脂等材料。
作为优选方案，外框架12从内框架11的一侧包围内框架11，这样，外框架12容易从内框架11上拆卸下来，便于更换过滤材料层16，或者清洗内框架 11和外框架12。可以定期更换过滤材料层16，以重复使用呼吸过滤装置，从而达到节省材料、避免废弃物污染的效果。
作为优选方案，外框架12的横截面为U型，如图4所示，U型横截面的外框架12更容易进行拆卸。根据实际需要，也可以将外框架12的横截面设计为其他形状。
作为优选方案，空气通道10通过通道出口15呼吸过滤装置的外部连通，从而空气通道10内的经过过滤的清洁空气可以通过通道出口15流出，再通过管道到达使用者的呼吸道。
作为优选方案，内框架11与外框架12均为曲线形状。根据呼吸过滤装置的实际应用场合，设计不同的曲线形状，以满足实际需求。例如，在图1中，呼吸过滤装置设计为波浪形曲线，适合成对组合为眼镜腿(见图4)，佩戴时不影响使用者同时带帽子。
作为优选方案，外框架12包括以插接形式连接在一起的第一外框架和第二外框架，内框架11包括以插接形式连接在一起的第一内框架和第二内框架，第一外框架和第二外框架分别包围第一内框架和第二内框架。通过以插接形式组成内框架11和外框架12，使得本实施例的呼吸过滤装置更易拆卸，从而更便于收纳。
作为优选方案，外框架12包括以卡接形式连接在一起的U型部分和平板部分，平板部分封闭U型部分的开口。通过这种卡接结构，便于拆卸外框架12，取出其中的内框架12和设置于内框架13与外框架11之间的过滤材料层。
图4显示根据示例性实施例的带有鼻罩的呼吸过滤装置的立体图，图5显示根据示例性实施例的鼻罩的立体图，图6显示根据示例性实施例的鼻罩的另一个角度的立体图。
作为优选方案，呼吸过滤装置还包括鼻罩，所述鼻罩包括：
鼻形壳体1，鼻形壳体1的顶部设置有进气口3，底部设置有出气口4，进气口3与出气口4之间形成气道2，气道2与空气通道10连通；
进气单向阀5，设置于进气口3，允许空气从空气通道10进入气道2；以及
出气单向阀6，设置于出气口4，允许空气从气道2流至鼻罩的外部。
使用时，使用者将鼻形壳体1压扣于鼻部，这时，气道2位于鼻形壳体1与使用者的鼻部之间。当使用者吸气时，气道2内相对于外部环境形成负压，进气单向阀5打开，出气单向阀6关闭，从而空气通道10内的空气通过进气单向阀5进入气道2，并最终到达使用者的鼻孔。当使用者呼气时，气道2内的气体压力增大，进气单向阀5关闭，出气单向阀6打开，从而气道2内的气体通过出气单向阀6流至鼻罩的外部。
这种鼻罩式呼吸过滤装置结构简单、佩戴舒适；鼻罩的鼻形壳体的进气口与出气口之间形成空气通道，当使用者佩戴鼻罩时，实现呼吸道沿着使用者鼻部的延伸；通过在进气口和出气口分别设置进气单向阀和出气单向阀，使得空气始终通过进气口进入鼻罩，通过出气口流出鼻罩，可以避免呼出的气体二次污染经过过滤的洁净气体。
作为优选方案，出气单向阀6为活动瓣膜，活动瓣膜能够朝向鼻罩的外部打开，从而允许空气流出。更为优选地，出气单向阀6为V型活动瓣膜，V型活动瓣膜的开口朝向鼻罩的外部。当使用者呼气时，空气通道2内的气体压力增大，在压力作用下，V型活动瓣膜的两边向内靠拢，即V型夹角缩小，出气口4被打开，气体可通过出气口4流出鼻罩。当使用者吸气时，气道2内形成负压，在负压作用下，V型活动瓣膜的两边向外分开，即V型夹角增大，出气口4被关闭。或者，出气单向阀6也可以为其他形状的活动瓣膜，可以在压力作用下打开和关闭。
作为优选方案，呼吸过滤装置还包括设置于出气单向阀6外侧的底部盖板20，底部盖板20能够透气，如图7所示。底部盖板20可以通过卡合的方式固定于鼻形壳体的底部，其主要作用是保护出气单向阀6，防止其受损。
作为优选方案，进气单向阀5包括透气的顶部支架21和设置于顶部支架21内侧的不透气的活动瓣膜22，顶部支架21和活动瓣膜22的结构分别如图8和 9所示。活动瓣膜22的一部分固定至顶部支架21内侧，在实施例中，活动瓣膜22的中心部分固定至顶部支架21内侧。与V型活动瓣膜的原理类似，当使用者吸气时，气道2内形成负压，在负压作用下，活动瓣膜22向内打开，进气口3打开，空气通过进气口3进入气道2；当使用者呼气时，气道2内的气体压力增大，在压力作用下，活动瓣膜22从内侧被压紧在顶部支架21上，进气口3关闭。
本领域技术人员可以根据实际需要选用其他形式的进气单向阀，例如，可以选择由压力控制的单向阀，并在气道2内设置压力传感器，当压力传感器检测到压力增大时，单向阀关闭；当压力传感器检测到压力减小时，单向阀打开，外部气体进入空气通道中。
根据示例性实施例的呼吸过滤装置也可以通过管道或者其他形式的连接装置连接至使用者的呼吸道，能够将经过过滤的清洁空气供给使用者。
图10显示根据另一个示例性实施例的呼吸过滤装置的立体图，在该实施例中，呼吸过滤装置还包括一对镜片17，一对镜片17对称设置于鼻形壳体1的两侧，镜片17通过卡接方式固定于外框架12和鼻形壳体1。特别地，鼻形壳体1的两侧分别设有侧面卡接槽18，外框架的底部设置底部卡接槽19，镜片17通过卡入侧面卡接槽18和底部卡接槽19进行固定。
使用之前，使用者将将镜片17卡接于外框架和鼻形壳体1上。使用时，使用者佩戴呼吸过滤装置，鼻形壳体1压扣于鼻部，镜片17遮挡双眼。该呼吸过滤装置能够对使用者的眼部和鼻部进行防护。不用时，可以将鼻形壳体、框架、镜片分别拆卸，便于收纳。
以上已经描述了本发明的实施例，上述说明是示例性的，并非穷尽性的，并且也不限于所披露的各施例。在不偏离所说明的实施例的范围和精神的情况下，对于本技术领域的普通技术人员来说许多修改和变更都是显而易见的。本文中所用术语的选择，旨在最好地解释实施例的原理和实际应用，或者使本技术领域的其它普通技术人员能理解本文披露的实施例。

Claims (15)

  1. 一种呼吸过滤装置，其特征在于，包括：
    内框架(11)，所述内框架(11)为中空结构，所述中空结构内部形成空气通道(10)，所述内框架(11)的侧壁上设置有至少一个内通气孔(13)；
    外框架(12)，包围所述内框架(11)，且其侧壁上设置有至少一个外通气孔(14)；
    至少一个过滤材料层(16)，设置于所述内框架(11)与外框架(12)之间。
  2. 根据权利要求1所述的呼吸过滤装置，其特征在于，所述过滤材料层(16)是活性炭层、PM2.5过滤膜或无纺布层。
  3. 根据权利要求1所述的呼吸过滤装置，其特征在于，所述外框架(12)从所述内框架(11)的一侧包围所述内框架(11)。
  4. 根据权利要求3所述的呼吸过滤装置，其特征在于，所述外框架(12)的横截面为U型。
  5. 根据权利要求1所述的呼吸过滤装置，其特征在于，所述外框架(12)能够从所述内框架(11)上拆卸下来。
  6. 根据权利要求1所述的呼吸过滤装置，其特征在于，所述空气通道(10)通过通道出口(15)与所述呼吸过滤装置的外部连通。
  7. 根据权利要求1所述的呼吸过滤装置，其特征在于，所述内框架(11)与所述外框架(12)均为曲线形状。
  8. 根据权利要求1所述的呼吸过滤装置，其特征在于，还包括鼻罩，所述鼻罩包括：
    鼻形壳体(1)，所述鼻形壳体(1)的顶部设置有进气口(3)，底部设置有出气口(4)，所述进气口(3)与出气口(4)之间形成气道(2)，所述气道(2)与所述空气通道(10)连通；
    进气单向阀(5)，设置于所述进气口(3)，允许空气从所述空气通道(10)进入所述气道(2)；以及
    出气单向阀(6)，设置于所述出气口(4)，允许空气从所述气道(2)流至所述鼻罩的外部。
  9. 根据权利要求8所述的呼吸过滤装置，其特征在于，还包括一对镜片(17)，所述一对镜片(17)对称设置于所述鼻形壳体(1)的两侧，所述镜片(17)通过卡接方式固定于所述外框架和/或所述鼻形壳体(1)。
  10. 根据权利要求9所述的呼吸过滤装置，其特征在于，所述鼻形壳体(1)的两侧分别设有侧面卡接槽(18)，所述外框架的底部设置底部卡接槽(19)，所述镜片(17)通过卡入所述侧面卡接槽(18)和底部卡接槽(19)进行固定。
  11. 根据权利要求8所述的呼吸过滤装置，其特征在于，所述出气单向阀(6)为活动瓣膜，所述活动瓣膜能够朝向所述鼻罩的外部打开。
  12. 根据权利要求8所述的呼吸过滤装置，其特征在于，还包括设置于所述出气单向阀(6)外侧的底部盖板(20)，所述底部盖板(20)能够透气。
  13. 根据权利要求8所述的呼吸过滤装置，其特征在于，所述进气单向阀(5)包括透气的顶部支架(21)和设置于所述顶部支架(21)内侧的不透气的活动瓣膜。
  14. 根据权利要求1所述的呼吸过滤装置，其特征在于，所述外框架(12)包括以插接形式连接在一起的第一外框架和第二外框架，所述内框架(11)包括以插接形式连接在一起的第一内框架和第二内框架，所述第一外框架和第二外框架分别包围所述第一内框架和第二内框架。
  15. 根据权利要求1所述的呼吸过滤装置，其特征在于，所述外框架(12)包括以卡接形式连接在一起的U型部分和平板部分。
PCT/CN2017/109543 2016-11-07 2017-11-06 呼吸过滤装置 WO2018082694A1 (zh)

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