WO2022078212A1

WO2022078212A1 - Dynamic sealing respiratory protection mask

Info

Publication number: WO2022078212A1
Application number: PCT/CN2021/121551
Authority: WO
Inventors: 董东生
Original assignee: 北京仰生恒泰科技有限责任公司
Priority date: 2020-10-17
Filing date: 2021-09-29
Publication date: 2022-04-21
Also published as: CN112121323A

Abstract

A dynamic sealing respiratory protection mask, comprising a main housing (1), a filtering unit (2) and a sealing unit (3), and further comprising at least one elastic unit (4) capable of making contact with an opening area (33) of the sealing unit, wherein one end of the elastic unit (4) is connected to the main housing (1), and the other end of the elastic unit is connected to the sealing unit (3); when a user closes their mouth, a mandibular joint is closed, the skin of a mouth area of the face makes close contact with the opening area (33) of the sealing unit of the main housing due to the tension of a tying belt (B), and the elastic unit (4) is pressed by the corresponding part of the opening area (33) of the sealing unit to deform and/or displace same and elastically store energy; and during opening, the mandibular joint is opened to drive the skin of the mouth area of the face to move downwards and backwards, compression on the elastic unit (4) is partially relieved, elastic potential energy is released, and the elastic unit (4) deforms and/or displaces reversely to drive the opening area (33) of the sealing unit to move downwards and backwards synchronously, thereby dynamically sealing the skin of the mouth area of the face.

Description

A dynamic sealing respiratory protective mask

technical field

The invention relates to a dynamic sealing respiratory protective mask, in particular to a device capable of filtering particulate matter in the air, and belongs to the technical field of medical hygiene and daily protective articles.

Background technique

In order to deal with harmful particles in the air, it is a routine choice for humans to wear various respiratory protective masks; in addition to the filtering effect of the filter unit itself, airtightness is the key to the quality assurance of respiratory protective masks; the better respiratory protective masks in the prior art Its sealing unit can fully and statically fit with the user's facial skin to achieve an ideal conformal sealing effect, and when the user speaks or inhales, the movement of the mandible drives the skin of the mouth area to move down and backward, partially detached. Seal the mouth area of the unit to form a gap. Although the gap can be eliminated immediately when the mouth is closed, the risk of breathing arises; filtered and inhaled.

In order to solve the defect that the existing respiratory protective mask cannot fit dynamically with the facial skin, and completely eliminate the risk of inhaling pathogenic particles in the air when speaking or inhaling, it is urgent to develop a dynamic sealing respiratory protective mask to effectively ensure breathing safety.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a dynamic sealing respiratory protective mask, comprising a main casing, a filter unit, and a sealing unit. At least the periphery of the sealing unit conforms to the facial skin, and the part of the sealing unit in contact with the skin is formed by the integrated nose The airway opening can be isolated from the outside after the face mask is buckled on the face, forming a transitional breathing outer cavity, and the filter unit is sealed with the main shell, so that the filtered external air flows into the breath first. The outer cavity is then entered into the respiratory tract; the main shell is directly or indirectly connected with a tether, and the indirect connection with a tether means that there is a tether on the surface shell connected to the main shell, and the tether is fixed on the head during use. The tension force is generated at the outer part to make the sealing unit press against the facial skin and seal fit; in order to achieve dynamic sealing, it also includes at least one elastic unit that can contact the mouth area of the sealing unit; the elastic unit is composed of torsion springs, compression springs, reeds and other elastic components Drive, one end of the elastic unit is connected to the main casing, and the other end is connected to the sealing unit. The connection can be direct connection or indirect connection. When the user closes the mouth, the mandibular joint is closed. The mouth area of the body sealing unit is in close contact, and the elastic unit is deformed or displaced by the corresponding part of the mouth area of the sealing unit, and elastically stores energy; while the mandibular joint opens when the mouth area is opened, which drives the skin of the facial mouth area to move downwards and backwards, which is partially relieved. The compression of the elastic unit, the release of the elastic potential energy, the reverse deformation and/or displacement of the elastic unit drives the mouth area of the sealing unit to move down and backward synchronously, and realizes the dynamic sealing with the skin of the facial mouth area; The main casing, filter unit and other structures can be composed of one or more components; the main casing can also be integrated with the sealing unit into one component, usually the hardness of the main casing is at least greater than the flexible part of the sealing unit in contact with the skin. When the unit is extremely conformable to the user's facial contour, the rigid sealing unit can also achieve a sealing fit; the elastic unit may not be an independent component, but a structure on the sealing unit that can release the elastic force in a directional direction, such as after being partially compressed. Recoverable folds.

The filter unit is sealed with the main casing in the shape of a single blade, or the front blade and the rear blade in the shape of a blade can be sealed and connected to form an assembly and then sealed with the main casing.

The target area of the elastic force unit is located in the mouth area of the sealing unit in contact with the skin under the lower lip or in the mouth area of the sealing unit in contact with the skin of the cheeks on both sides; the elastic force unit can act directly or indirectly on the target area, and indirect action refers to The elastic force unit directly acts on the sealing unit which is not in direct contact with the skin and then transmits the force to the mouth area part of the sealing unit which is in contact with the skin.

In order for the elastic force unit to move smoothly and to release the elastic force better, an opening or a accommodating cavity is provided in the area connected with the elastic force unit on the main casing, thereby increasing the activity space of the elastic force unit.

In order to better transmit the elastic force and avoid the overly flexible sealing unit absorbing and losing the elastic force part, the elastic force unit is connected to the mouth area of the sealing unit through a rigid connecting seat.

In order to increase the freedom of movement, facilitate adjustment, and better achieve dynamic sealing, the elastic unit is an articulated elastic unit, which can be one section or multiple sections, including ball and socket joints, pulley joints, elliptical joints, saddle joints, etc.; A plug-in connection for easy installation and adjustment is also possible between the unit and the main housing or the sealing unit.

Considering the mechanical balance of the synchronous displacement of the sealing unit when the user opens, the symmetrical solution is to design two sets of elastic units on the left and right to act respectively on the area where the sealing unit contacts the user's left and right cheeks.

In order to better play the role of the elastic unit, the mouth area of the sealing unit is provided with at least one wrinkle parallel to the edge, so that the mouth area of the sealing unit is easier to be driven by the elastic unit to close to the skin and move synchronously.

In order to facilitate the smooth movement of the sealing unit when the user opens, the upper part of the sealing unit is tightly connected with the main casing, and the lower part of the sealing unit is free from the main casing, so that the mouth area of the sealing unit is easily driven by the elastic unit.

Further, the transition area between the upper part and the lower part of the sealing unit is provided with at least one transverse fold to further facilitate the movement of the mouth area of the sealing unit.

In order to make full use of negative air ions, especially negative oxygen ions, a negative ion unit is also connected to the external breathing cavity. At least the negative ion generating end of the negative ion unit, such as carbon brushes, metal sheet tips, etc., is exposed to the external breathing cavity, and the negative ions are released at close range and the surrounding area is filtered. After the air, the output of negative ions and the utilization rate of the human body are the highest.

In order to fully humidify and warm the inhaled dry and cold air, a hydrogel unit is also provided, and at least the hydrogel component in the hydrogel unit is directly exposed to the external breathing cavity or disposed outside the external breathing cavity adjacent to the filter unit. Part of the water vapor in the hot and humid gas exhaled by the user will condense on the surface of the hydrogel, and part of the heat will be absorbed by the hydrogel.

Considering to solve the sultry discomfort that may occur when the user's face is closed, it also includes a fan unit containing an air filter component. The opening of the fan unit is connected to the external breathing cavity. When it feels stuffy, the unit is activated, and the external cool air is sent into the external breathing cavity and taken away. Part of the heat flows out of the mask through the ventilation port and/or filter unit in the peripheral area of the breathing cavity, and the ventilation port is provided with an air filter part.

Further, the fan unit is communicated with the external breathing cavity through a corrugated connecting pipe extending from the mouth area of the sealing unit.

For the sake of appearance, it also includes a sheet-like surface shell that is buckled and covered on the main shell during use, and the elastic unit and the strap can be connected to the main shell or the surface shell.

The beneficial effect of the present invention is that: on the basis that the mask sealing unit is fully statically attached to the facial skin of the user, the mouth area of the sealing unit is driven to move downward and backward synchronously with the mandible when the user opens the mouth through the release of the elastic force of the elastic member. , the sealing unit is always in contact with the skin during the movement, realizing the ideal dynamic sealing effect between the respiratory protective mask and the facial skin, completely eliminating the risk of inhaling pathogenic particles in the air when speaking or opening the mouth, and ensuring breathing Safe; at the same time, it can generate negative ions in the filtered air; it can warm and humidify the inhaled gas, and it can also actively dissipate heat.

Description of drawings

The accompanying drawings that do not limit the present invention are as follows:

Fig. 1A: a cross-section showing the state of the mask of the prior art when the mouth is closed

Fig. 1B: a cross-section showing the state of the mask of the prior art when it is opened

Figure 1C: Illustrates a prior art face mask

Figure 1D: The cross-section of Example 1 shows the closed state

Fig. 1E: Schematic cross-sectional view of Example 1, open state

Figure 2A: Schematic diagram of Example 2

Figure 2B: Schematic diagram of Example 2

Figure 3A: Schematic diagram of Example 3

Figure 3B: Schematic diagram of Example 3

Figure 4A: Schematic diagram of Example 4

Figure 4B: Schematic diagram of Example 4

Figure 5: Schematic diagram of Example 5

Figure 6A: Schematic diagram of Example 6

Figure 6B: Schematic diagram of Example 6

Figure 7A: Schematic diagram of Example 7

Figure 7B: Schematic diagram of Example 7

Figure 7C: Schematic diagram of Example 7

Detailed ways:

1A shows the state of the prior art respiratory protective mask when the mouth is closed. The mask M is composed of a main casing 1, a filter unit 2, and a sealing unit 3. The filter unit 2 is composed of a filter membrane 22 through a filter unit bracket 21 and the whole is concave to the user. The thin-walled main casing 1 of the face is sealed and connected, and a sealing unit 3 is connected to the periphery of the main casing 1. The sealing unit 3 is usually made of flexible materials such as silicone rubber, thermoplastic elastomer, etc., and at least the periphery is folded to conform to the facial skin. Fitting, as shown in Figure 1C, the part of the sealing unit 3 in contact with the skin is composed of the integrated nose area 31, the mouth area 33 and the mouth-nose transition area 32; Isolation, forming a transitional breathing outer cavity 0, the filter unit 2 is sealed with the main casing 1, so that the filtered external air first flows into the breathing outer cavity 0 and then enters the respiratory tract; the main casing 1 is connected by the connecting buckle structure 1B. With B, the hanging ear or the sleeve is fixed to the head mask M. When in use, the lace is fixed on the head to generate tension, so that the periphery of the sealing unit 3 is pressed against the facial skin and tightly fitted; in the closed state in Figure 1A, the mandible rotates at the center The connecting line Hc and the horizontal line L between the point Ha and the marked point Hb in front and under the mandible corresponding to the skin under the lower lip have an included angle α. Taking the sealing unit 3 acting on point A under the lower lip as an example, The sealing point A1 of the area 33 coincides with the corresponding point A2 of the skin under the lower lip, and the relative position of the marking point Hb and the corresponding point A2 of the skin does not change; and when the user opens, as shown in FIG. The center rotates, the marking point Hb and the skin corresponding point A2 move downward and backward, the angle α between the horizontal line L and the connecting line Hc increases to the angle β, the sealing point A1 of the sealing unit mouth area 33 and the skin under the lower lip The corresponding point A2 is separated to form a partial gap G. During inhalation, a relative negative pressure is formed between the breathing outer cavity 0 of the mask M and the external ambient air, which can drive a part of the air to directly enter the breathing outer cavity through the gap G without passing through the filter unit 2. 0 Re-entering the respiratory tract, even non-aerosol droplets are easily inhaled by this negative suction pressure, resulting in breathing risks; the part of the sealing unit 3 in contact with the skin can also be an air bag or a sac structure.

Example 1:

1D: Example 1 of the present invention shows the closed state. In order to achieve dynamic sealing, the mask M is provided with an elastic unit 4 that can drive the mouth area 33 of the sealing unit; in this example, the elastic unit 4 acts on the mouth area 33 of the sealing unit corresponding to the lower lip In the lower area 33a, the elastic unit 4 is a part of the elastic unit 4a with a wrinkled structure in the mouth area 33 of the sealing unit. The elastic unit 4a in this example is not an independent part or component, but a partial structure of the sealing unit 3 made of elastic material. Change, the elastic unit 4a of the wrinkled structure is compressed to a certain extent and elastically stores energy under the action of the lace B (not shown), and when the user opens the mouth, as shown in Figure 1E, the mandibular joint opens, driving the facial mouth area skin downwards. After moving backward, the compression on the elastic unit 4a of the corrugated structure is partially released, the elastic potential energy is released, and the elastic unit 4a undergoes reverse deformation and displacement, thereby driving the sealing unit mouth area 33 corresponding to the area 33a under the lower lip synchronously downward. Moving backwards, the sealing point A1 of the mouth area 33 of the sealing unit and the corresponding point A2 of the skin under the lower lip always coincide during the opening process, realizing dynamic sealing with the skin in the mouth area of the face and ensuring the respiratory protection effect.

Example 2:

As shown in FIGS. 2A and 2B , two groups of replaceable filter units 2 on the left and right are connected to the main casing 1 in this example, and each group of filter units 2 is sealedly connected by a leaf-shaped front leaf 221 with air filtering function and a rear leaf 222 The inner support 23 is arranged between the anterior leaflet 221 and the posterior leaflet 222, and the inner space 20 of the filter unit 2 enclosed by the anterior leaflet 221 and the posterior leaflet 222 is connected to the external breathing chamber through the communication port 24 formed by the cylindrical extension of the inner supporter 23. The cavities are connected, and the blades can be made of three layers of spunbond non-woven fabrics, melt-blown non-woven fabrics, and spunbond non-woven fabrics. Because of the inherent shape, the two blades are sealed and connected at the edge, so they cannot or are not easy to fit; the elastic unit 4 in this example is composed of components that can perform similar articulation, one each facing the user's left and right cheeks, and functions symmetrically or nearly symmetrically. One end of the elastic unit 4 is fixed on the main casing 1, and one end is connected to the outer side of the sealing unit mouth area 33, the first section 4b of the joint type elastic unit 4 is connected with the main casing 1, and the second section 4c of the elastic unit is specifically through A rigid connection seat 43 is connected to the outer surface of the sealing unit mouth area 33, which can be a fixed integral connection or a rotatable connection. The rigid connection seat 43 can better transmit the force, and the first section 4b is connected to the main A torsion spring E is provided between the shells 1 and between the first section 4b and the second section 4c, and an opening 104 is provided in the area connected to the elastic unit 4 on the main shell 1, thereby increasing the activity space of the elastic unit 4, as shown in the figure 2B, the mandibular joint is closed when the user closes the mouth. Due to the tension of the tether (not shown in the figure), the skin of the facial mouth area is in close contact with the mouth area 33 of the sealing unit of the main casing, and the elastic unit 4 is compressed by the corresponding part of the mouth area 33 of the sealing unit. The first section 4b and the second section 4c are close together, and the torsion spring E tightens the energy storage. When the user opens the mouth, the mandibular joint opens, which drives the skin of the facial mouth area to move downward and backward, partially releasing the joint-type elastic unit 4. Compression, the elastic potential energy of the torsion spring E is released, so that the first section 4b and the second section 4c of the elastic unit 4 are unfolded, and the second section 4c of the elastic unit 4 drives the sealing unit mouth area 33 corresponding to the area 33a under the lower lip synchronously downward. After moving backward, the sealing point A1 of the mouth area 33 of the sealing unit and the corresponding point A2 of the skin under the lower lip always coincide during the opening process, realizing the dynamic sealing with the skin of the facial mouth area, in order to reduce the resistance and better play the role of the elastic unit 4 , the mouth and nose transition area 32 between the nose area 31 and the mouth area 33 of the sealing unit 3 is provided with transverse wrinkles 321 to facilitate the movement of the mouth area 33 of the sealing unit 3; the corresponding part of the nose area 31 of the sealing unit is tightly connected with the main casing 1 , and the corresponding part of the sealing unit mouth area 33 is free from the main casing 1; the sealing unit mouth area 33 is provided with several folds 331 parallel to the edges, so that the sealing unit mouth area 33 is easier to be driven by the elastic unit 4 and close to the skin Move in sync.

Example 3:

As shown in FIGS. 3A and 3B , the biggest difference from Embodiment 2 is that the elastic unit 4 is composed of a ball-and-socket joint assembly. Specifically, one end of the elastic unit 4 is fixed on the main casing 1 , and the other end passes through a hard connecting seat. 43 is connected to the outer side of the mouth area 33 of the sealing unit, and the end of the second section 4c of the elastic unit is a ball head 44 embedded in the ball socket 430 on the hard connecting seat 43, and the ball head 44 can be rotated within a certain range within the ball socket 430. The first section 4b of the articulated elastic unit 4 can be connected to the main shell 1 by a ball-and-socket connection (figure omitted). In this example, the main shell 1 is provided with a accommodating cavity 100 to facilitate the joint elastic force. The unit 4 moves in it; of course, the joint-type elastic unit 4 can also be a joint, and the force angle is adjusted through the ball and socket connection.

Example 4:

As shown in Figures 4A and 4B, the biggest difference from the previous embodiment is that it also includes a face shell 5 buckled on the main casing 1, and one end of the elastic unit 4 made of a compressible spring E1 is connected to the face shell 5, One end is connected to the sealing unit mouth 33 .

Example 5:

As shown in Figure 5, in order to make full use of negative air ions, especially negative oxygen ions, the biggest difference from the previous embodiment is that the external breathing cavity O is also connected with a negative ion unit N, and the negative ion unit N is generated by the generator N2, the connection line N3, and the negative ions. The negative ion generating end N1 of the negative ion unit N, such as carbon brushes, metal sheet tips, etc., is exposed to the external breathing cavity 0, and the negative ions are released at a short distance and the surrounding area is filtered air, and the negative ion output and human body utilization rate are the highest.

Example 6:

As shown in FIGS. 6A and 6B , in order to fully humidify and warm the inhaled dry and cold air, the biggest difference from the previous embodiment is that it also includes a hydrogel unit W, which is composed of a hydrogel shell W2 and the hydrogel in it. In this example, the hydrogel unit W is arranged outside the breathing outer cavity 0, between the left and right two groups of filter units 2, and the exhaled air flow shown in FIG. 6A passes through the hydrogel shell W2 as shown by the arrow. The plurality of openings W3 flow through the surface of the hydrogel component W1, and part of the water vapor in the moist and hot gas exhaled by the user will condense on the surface of the hydrogel, and part of the heat will be absorbed by the hydrogel. The direction of the air flow during inhalation is shown by the arrow. During inhalation, the water on the surface of the hydrogel part W1 re-evaporates and heats up and is mixed into the dry airflow to warm and humidify the air; The hydrogel component W1 is directly exposed to the outer respiratory cavity 0 .

Example 7:

As shown in Figures 7A, 7B and 7C, considering to solve the sultry discomfort that may occur when the user's face is closed, a fan unit F including an air filter element F1 and a fan F2 is also included, and the opening F0 of the fan unit F is communicated with the external breathing cavity, and the cylindrical The shaped fan unit F is fixed and passes through the main casing 1. As shown in FIG. 7B, the corrugated connecting pipe 332 extending from the port area 33 of the sealing unit is communicated with the external breathing cavity 0. The corrugated connecting pipe 332 is easy to compress and expand, so as not to Affecting the movement of the mouth area 33 of the sealing unit driven by the elastic unit 4, FIG. 7C shows the mouth opening state, and the corrugated connecting tube 332 extends and unfolds synchronously.

When the user feels stuffy, the unit is activated (the button diagram is omitted), and the external cool air is sent into the external breathing cavity 0 to take away part of the heat, and it can also flow out of the mask M through the filter unit 2 through the ventilation openings 01 in the peripheral area of the external breathing cavity 0. , the ventilation port 01 is provided with a ventilation port air filter component 011 .

Claims

A dynamic sealing respiratory protective mask, comprising a main casing (1), a filter unit (2), and a sealing unit (3), wherein at least the periphery of the sealing unit conforms to facial skin, and the part of the sealing unit (3) that is in contact with the skin It is composed of an integrated nose area (31), mouth area (33) and a transition area of the mouth and nose (32); the mask (M) can isolate the opening of the respiratory tract from the outside after the face mask (M) is buckled on the face, forming a transitional external breathing cavity ( 0), the filter unit (2) is tightly connected with the main casing (1), so that the filtered external air first flows into the breathing outer cavity (0) and then enters the respiratory tract; the main casing (1) is directly or indirectly connected with a tie (B), when in use, the strap (B) is fixed on the head to generate tension, so that the sealing unit (3) is pressed against the facial skin and is tightly fitted; it is characterized in that it also includes at least one mouth area (33) that can contact the sealing unit. ) of the elastic unit (4); one end of the elastic unit (4) is connected with the main casing (1), and the other end is connected with the sealing unit (3), the mandibular joint is closed when the user closes the mouth, due to the tension of the tether (B), the facial The skin of the mouth area is in close contact with the mouth area (33) of the sealing unit of the main casing, and the elastic unit (4) is compressed by the corresponding part of the mouth area (33) of the sealing unit to deform and/or displace and elastically store energy; and the mandibular joint opens when opening. , drive the skin of the facial mouth area to move downward and backward, partially release the compression on the elastic force unit (4), release the elastic potential energy, and the elastic force unit (4) undergoes reverse deformation and/or displacement to drive the sealing unit mouth area (33) The synchronous downward and backward movement achieves a dynamic seal with the skin of the facial mouth area.
The dynamic sealing respiratory protective mask according to claim 1, characterized in that the filter unit (2) is sealed with the main casing (1) in the shape of a single blade, or is connected to the rear by a front blade (221) in the shape of a blade. The leaf (222) is sealed and connected with the main casing (1) after being sealed.
The dynamic sealing respiratory protective mask according to claim 1, characterized in that, the elastic unit (4) acting target area is located in the mouth area part of the sealing unit in contact with the skin under the lower lip or in the sealing area in contact with the cheek skin on both sides Unit mouth area section.
The dynamic sealing respiratory protective mask according to claim 1, characterized in that, an opening (104) or an accommodating cavity (100) is provided in the area of the main casing (1) connected to the elastic unit (4), thereby increasing the elastic unit (4) Activity space.
The dynamic sealing respiratory protective mask according to claim 1, characterized in that, the elastic unit (4) is connected to the mouth area (33) of the sealing unit through a rigid connecting seat (43).
The dynamic sealing respiratory protective mask according to claim 1, characterized in that, the elastic force unit (4) is an articulated elastic force unit.
The dynamic sealing respiratory protective mask according to claim 1, characterized in that, the elastic units (4) are two groups of left and right groups acting respectively on the areas where the sealing unit (3) contacts the left and right cheeks of the user.
The dynamic sealing respiratory protective mask according to claim 1, wherein the mouth area (33) of the sealing unit (3) is provided with at least one fold (331) parallel to the edge, so that the mouth area (33) of the sealing unit (3) is provided with at least one fold (331) parallel to the edge. 33) It is easier to move synchronously against the skin under the drive of the elastic force unit (4).
The dynamic sealing respiratory protective mask according to claim 1, characterized in that, the nose area (31) of the sealing unit (3) is tightly connected with the main casing (1), and the mouth area (33) of the sealing unit (3) is closely connected with the main casing (1). The housing (1) is freed so that the mouth area (33) of the sealing unit (3) is easily driven by the elastic unit (4).
The dynamic sealing respiratory protective mask according to claim 1, characterized in that the nose area (31) of the sealing unit (3) is tightly connected with the main housing (1), and the nose area (31) of the sealing unit (3) is connected to the mouth area The mouth-nose transition area (32) between (33) is provided with transverse folds (321) to facilitate the movement of the mouth area (33) of the sealing unit (3).
The dynamic sealing respiratory protective mask according to claim 1, characterized in that, the external breathing cavity (0) is further connected with a negative ion unit (N), and at least the negative ion generating end (N1) of the negative ion unit (N) is exposed to the external breathing cavity (0).
The dynamic sealing respiratory protective mask according to claim 1, characterized in that it further comprises a hydrogel unit (W), and at least the hydrogel part (W1) in the hydrogel unit (W) is directly exposed to the external breathing cavity (0) or arranged outside the breathing outer cavity (0) adjacent to the filter unit (2).
The dynamic sealing respiratory protective mask according to claim 1, characterized in that, further comprising a fan unit (F) containing an air filter component (F1), an opening (F0) of the fan unit (F) and an external breathing cavity (0) Connected.
The dynamic sealing respiratory protective mask according to claim 1, characterized in that it further comprises a fan unit (F) including an air filter component (F1), and the fan unit (F) extends through the corrugations extending from the mouth area (33) of the sealing unit. The connecting pipe (332) communicates with the external breathing cavity (0).
The dynamic sealing respiratory protective mask according to claim 1, characterized in that, at least one ventilation port (01) is provided in the peripheral area of the external breathing cavity (0), and the ventilation port (01) is provided with a ventilation port air filter component (011) .
The dynamic sealing respiratory protective mask according to any one of claims 1-15, characterized in that it further comprises a sheet-like surface shell (5) that is buckled and covered on the main shell (1) when in use, and an elastic unit ( 4) and the tie (B) can be attached to the main casing (1) or the face casing (5).