CN111050857A

CN111050857A - Breathing apparatus

Info

Publication number: CN111050857A
Application number: CN201880056713.6A
Authority: CN
Inventors: 金正汉; 段庆植; 金辰旭; 朴亨善; 鲁东宣; S·李
Original assignee: 3M Innovative Properties Co
Current assignee: 3M Innovative Properties Co
Priority date: 2017-09-01
Filing date: 2018-08-30
Publication date: 2020-04-21
Also published as: KR20190025468A; WO2019043620A1; TW201919734A; CN115025412A

Abstract

The present disclosure provides a respirator according to one embodiment, the respirator comprising: a filter portion including an opening and forming an interior space between the respirator and a localized area of a user's face when the respirator is worn by the user; a valve that allows air to flow through the opening or prevents the air from flowing through between the interior space and an exterior space of the filter house; and a fan unit disposed in the inner space.

Description

Breathing apparatus

The present disclosure relates to a respirator, and more particularly, to a respirator that includes a fan unit that is disposed between a user's face and the respirator when the respirator is worn by the user.

Background

Respirators are commonly worn by construction workers or police patrols on the street. Furthermore, even healthy adults wear respirators when yellow sand occurs.

However, a user wearing the respirator may experience the following inconvenience. For example, when a respirator is worn by a user, an interior space is formed between the user's face and the respirator. As the wearing time increases, the humidity and temperature of the interior space may increase. Therefore, the user may feel discomfort. To eliminate this discomfort, a valve may be provided at the respirator. The valve may be opened by the exhalation (exhalation) of the user and closed by the inhalation (inhalation) thereof. However, when the user exhales weakly, the valve may not be fully opened. In this case, the user may feel inconvenience in breathing.

Disclosure of Invention

It is an object of the present disclosure to provide a respirator that includes a configuration that overcomes the aforementioned humidity or temperature increase in its interior space.

In addition, a structure in which the above configuration is mounted in a respirator and a technique related to a configuration in which electric power is supplied to the above configuration can be provided.

In addition, techniques related to configurations that allow easy opening of a valve mounted on a respirator through exhalation by the user may be provided.

However, aspects of the present disclosure are not limited to the above description, and other aspects of the present disclosure will be clearly understood by those of ordinary skill in the art from the following description.

A respirator according to one embodiment includes: a filter portion including an opening and forming an interior space between the respirator and a localized area of a user's face when the respirator is worn by the user; a valve that allows air to flow through the opening or prevents air from flowing through between the interior space and the exterior space of the filter house; and a fan unit disposed in the inner space.

In addition, the fan unit may be configured to allow air output by operation of the fan unit to move toward the valve.

In addition, the fan unit and the valve may allow air to flow to the external space only when the user's breath is an exhalation.

In addition, the fan unit is detachable from the filter portion.

In addition, the respirator may further include a power supply that supplies power to the fan unit, and the power supply may include a battery and be detachable from the filter portion.

In addition, the fan unit may be attached to one surface of the filter portion opposite the interior space, and the respirator may further include a power supply attached to the other surface of the filter portion opposite the one surface to supply power to the fan unit.

In addition, the fan unit may include a first magnetic body, the power supply may include a second magnetic body having a polarity opposite to that of the first magnetic body, and the fan unit and the power supply may be respectively attached to the filter part due to an attractive force between the first magnetic body and the second magnetic body, with the filter part interposed between the fan unit and the power supply.

In addition, the respirator may further include a fan unit holder attached to one surface of the filter portion, and the fan unit may include a fan unit holder coupled to the fan unit holder.

In addition, the fan unit may be attached to one surface of the filter part by a hook and loop method.

In addition, the fan unit may be attached to one surface of the filter part by an adhesive.

In addition, the respirator may further include a valve housing that provides a space in which the valve is disposed, and the valve housing includes a receiving portion, and the power supply may include a power supply retaining portion coupled to the receiving portion.

In addition, the respirator may further include a power supply that supplies power to the fan unit using a wireless method, the fan unit may include a power receiver that is disposed at a position facing the power supply, wherein the filter is interposed between the power receiver and the power supply, and the power receiver receives the power supplied by the power supply using a wireless method.

Additionally, each of the power source and the power receiver may include a coil.

In addition, the power supply may supply power using any one of a magnetic induction method, a magnetic resonance method, and a capacitance method as a wireless method.

In addition, the fan unit may include a fan housing coupled to the filter portion, a fan disposed in the fan housing, and a driver to drive the fan, and the respirator may further include a power supply to supply power to the driver.

In addition, the fan unit may further include a first magnetic body, the power supply may include a second magnetic body having a polarity opposite to that of the first magnetic body, and the fan housing and the power supply may be respectively attached to the filter part due to an attractive force between the first magnetic body and the second magnetic body, with the filter part interposed between the fan housing and the power supply.

In addition, the filter part may be folded with at least one folding line formed at the filter part as a folding boundary.

In addition, the filter part may be divided into at least two regions, the opening may be provided in any one of the at least two regions, and the position of the valve and the fan unit to which the filter part is attached may be determined according to which one of the at least two regions the opening is provided in.

In addition, the valve and fan unit may be attached to the same area of the at least two areas.

In addition, the filter portion may be divided into a left area covering a left partial area of the face portion and a right area covering a right partial area of the face portion, the valve and the fan unit may be attached to the left area when the opening is provided in the left area, and the valve and the fan unit may be attached to the right area when the opening is provided in the right area.

When a user wears the respirator according to one embodiment, an electrical device disposed in the interior (i.e., the interior space) of the filter portion may receive power from a power source disposed outside the filter portion using a wireless method. Due to the wireless method, a wire connecting the electric device and the power source is unnecessary, and it is not necessary to form a hole for the wire to pass through at the filter portion. Therefore, since there is no member connecting the inner space of the filter house with the outside at the filter house as long as the valve is closed, the inner space of the filter house can be sealed from the outside, and thus the performance of the respirator and the like can be improved.

In addition, the electrical device and the power source may be attached to the filter portion due to magnetic attraction therebetween, and may also be aligned due to magnetic attraction.

Further, when the fan unit is used as an electric device, discomfort of a user caused by an increase in humidity or temperature in the internal space of the filter portion can be reduced. Furthermore, when the user's breath is an exhalation, the valve can be easily opened by the wind provided by the fan unit. Therefore, even when the user wears the respirator, the user does not feel any inconvenience in breathing.

Drawings

Fig. 1 is a diagram showing the structure of a respirator according to one embodiment when viewed from the side.

FIG. 2 is an exploded perspective view of the respirator shown in FIG. 1.

FIG. 3 is a view showing the operation of the valve in the respirator shown in FIG. 1.

Fig. 4 is a view illustrating a shape of the fan unit shown in fig. 1.

Fig. 5 is a view illustrating a shape of a power supply according to an embodiment.

Fig. 6 is a view illustrating the power supply coupled with the receiving portion of the valve housing shown in fig. 5.

Fig. 7 is a view illustrating a shape of a power supply according to an embodiment different from that of fig. 5.

Fig. 8 is a view showing the structure of a valve housing coupled with the housing of the power supply shown in fig. 7.

Fig. 9 is a view showing a structure in the power supply shown in fig. 7 coupled with the valve housing shown in fig. 8 when viewed from the side.

Fig. 10 is a view showing components of a coil included in the power supply shown in fig. 5.

Fig. 11 is a view showing an electric circuit formed by the power supply and the fan unit in the respirator shown in fig. 1.

FIG. 12 is a front view of a respirator according to a different embodiment than FIG. 1.

Fig. 13 is a view illustrating the shape of a fan unit according to an embodiment different from that of fig. 4.

FIG. 14 is a view showing the fan unit attached to the respirator shown in FIG. 13.

FIG. 15 is a graph showing the performance (relative humidity rate of change) of a respirator according to one embodiment compared to other products.

Fig. 16 is a graph showing the relative humidity change rate per driving voltage of the fan unit when the fan unit is disposed inside the filter portion and when the fan unit is disposed outside the filter portion.

Detailed Description

Advantages and features of the present disclosure and methods of accomplishing the same will become apparent with reference to the drawings and the embodiments described in detail below. However, the present disclosure is not limited to the embodiments to be described below, and may be embodied in various modifications. The embodiments are provided only to enable those skilled in the art to fully understand the scope of the present disclosure, and are defined by the scope of the claims.

In the description of the embodiments of the present disclosure, when certain detailed descriptions of well-known functions or components in the related art are considered to unnecessarily obscure the essence of the present disclosure, the detailed descriptions will be omitted. In addition, the terms described below are defined in consideration of functions in the embodiments, which may vary according to the intention or practice of users and operators. Therefore, its definition will be determined based on the contents throughout the specification.

Fig. 1 is a view showing the structure of a respirator according to one embodiment when viewed from the side, fig. 2 is an exploded perspective view of the respirator shown in fig. 1, and fig. 3 is a view showing the operation of a valve in the respirator shown in fig. 1. However, since fig. 1 to 3 only show examples of the present disclosure, the concept of the present disclosure is not limited to the examples shown in fig. 1 to 3.

Referring to fig. 1-3, the respirator 1000 may include a main body 100, a valve 200, an electrical device 300, a power source 400, a valve housing 600, and a securing member 700, and may also include other components not shown in fig. 1-3.

First, respirator 1000 is worn on the face of a user. By wearing the respirator 1000, the nose and mouth of the user may not be exposed to the outside. Although not shown in the drawings, the respirator 1000 may cover all of the user's eyes, nose, and mouth.

When the respirator 1000 is worn by a user, the body 100 forms an interior space between the respirator 1000 and a localized area of the user's face. For example, the body 100 may cover the nose and mouth of the user and expose the eyes.

The body 100 may be formed as a filter part 110. The filter portion 110 may comprise a foldable material.

The filter part 110 may include a plurality of micro holes not shown in the drawings. When a user inhales, air can flow from the outside into the inner space through the minute holes. In addition, the size of the micro holes may be a size in which fine dust, foreign substances, etc. included in outdoor air cannot flow in through the micro holes. That is, the filter part 110 including the micro-pores may perform a function of a filter that filters fine dust and the like in the air.

The filter portion 110 may include an opening 120. The opening 120 may be disposed at the center of the filter part 110, which is a position facing the mouth or nose of the user. However, the opening 120 provided at the center of the filter part 110 is merely an example. According to an embodiment, the opening 120 may be disposed at the left or right side of the filter part 110, not at the center of the filter part 110. In this case, although described below, the valve 200 and the valve housing 600 may be further attached to the filter part according to the disposed position of the opening 120, which will be described in detail with reference to fig. 12.

The valve 200 is attached to the filter part 110 to surround the opening 120. The valve 200 may be opened or closed to connect or block the above-described inner space to the outside. Fig. 3 shows the valve 200 opened or closed. In fig. 3, the valve 200 disposed in the vertical direction indicates that the valve 200 is closed, and the valve 200 disposed in the diagonal direction indicates that the valve 200 is opened. Here, since the configuration of the valve 200 that is opened or closed as described above is well known, a detailed description thereof will be omitted.

The valve 200 may be opened or closed according to the user's breath. For example, the valve 200 may be closed when the user's breath is inhalation and may be open when the breath is exhalation.

Here, the valve 200 may be designed to open only when the user's breath is exhalation. That is, when the user's breath is inspiratory or the user is not breathing, the valve 200 is not opened. However, as described below, even when the fan unit is driven as the electrical device 300, the valve 200 may not be opened when the user's breath is inhaling or when the user is not breathing.

The electric device 300 refers to an apparatus that is disposed in the above-described internal space and is driven by electric power. The electrical device 300 is attached to one surface of the filter part 110 and can be detached from the filter part 110. The electric device 300 is disposed between the filter part 110 and the mouth of the user, and its position can be freely determined. Hereinafter, one surface of the filter part 110 refers to a surface facing the above-mentioned inner space, that is, an inner surface of the filter part 110 facing the face of the user. In addition, the other surface of the filter part 110 refers to an outer surface of the filter part 110 opposite to the one surface, i.e., a surface facing the outside.

The power supply 400 is attached to the other surface of the filter part 110 and is detachable from the filter part 110. The power supply 400 transmits power to the electrical device 300 using a wireless method. Here, the wireless method may be, for example, any one of a magnetic induction method, a magnetic resonance method, and a capacitance method. When the wireless method is a magnetic induction method or a magnetic resonance method, although this case will be described with reference to fig. 11, the power supply 400 may include a coil 440 and a transmission driver 441, and the power receiver 360 included in the electric device 300 may include a coil 361 and a reception driver 362.

According to one embodiment, the electrical device 300 disposed in the inside (i.e., the inner space) of the filter part 110 may receive power from the power source 400 disposed outside the filter part 110 using a wireless method. Due to the wireless method, a wire connecting the electric device 300 and the power source 400 is unnecessary, and it is not necessary to form a hole for the wire to pass through at the filter part 110. Accordingly, since there is no member connecting the inner space of the filter house 110 with the outside at the filter house 110 as long as the valve 200 is closed, the inner space of the filter house 110 may be sealed from the outside, and thus the performance, etc., of the respirator 1000 may be improved.

The electric device 300 may include a first magnetic body 340. In addition, the power supply 400 may include a second magnetic body 430 (refer to fig. 5) having a polarity opposite to that of the first magnetic body 340, or may include a metal body reacting to the magnetic attraction of the first magnetic body 340. Here, the electric device 300 and the power supply 400 may be disposed at positions facing each other with the filter part 110 interposed therebetween by using the first magnetic body 340 and the second magnetic body 430, or by using the first magnetic body 340 and the above-described metal body. In fig. 2, the dotted lines extending from the respective first magnetic bodies 340 show that the first magnetic bodies 340 are respectively disposed at positions facing the second magnetic bodies 430 or the metal bodies with the filter parts 110 therebetween.

According to one embodiment, the magnetic attraction provided by the first magnetic body 340 may attach each of the electrical device 300 and the power source 400 to the filter part 110 without an additional attachment means.

In addition, the magnetic attraction may align the position of the electrical device 300 and the power source 400. As described above, since the electric device 300 should receive power from the power supply 400 using a wireless method, it is necessary to align the electric device 300 and the power supply 400 at a position where power can be wirelessly transmitted or a position optimized for wirelessly transmitting power. Accordingly, the magnetic attraction applied between the electrical device 300 and the power supply 400 may align the electrical device 300 and the power supply 400 to minimize the gap therebetween.

The valve housing 600 is attached to another surface of the filter part 110 to cover the valve 200. That is, the valve housing 600 may provide a space in which the valve is disposed.

The valve housing 600 may include a plurality of openings. When the valve 200 is opened, the air in the inner space passes through the opening 120 and the valve 200 and is then discharged to the outside through a plurality of openings provided at the valve housing 600.

The securing member 700 is a member that secures the respirator 1000 to the user and may include an elastic material such as a rubber band or the like, but is not limited thereto. For convenience, the fixing member 700 is not shown in the drawings except for fig. 2.

Meanwhile, the electric device 300 may refer to various apparatuses driven by electric power as described above, and may include, for example, at least one of a sensor part, a storage part, or a fan unit.

The sensor part in the above-described apparatus may include a sensor that measures humidity, temperature, pressure, etc. of the inner space of the filter part 110, or a gyro sensor, an acceleration sensor, etc. that measures the movement of the user wearing the respirator 1000, but is not limited thereto.

The storage section is a component that stores data measured by the sensor section, and may be embodied as, for example, a memory or the like that stores data. The user can remove the respirator 1000 and connect the memory in the respirator 1000 to an external computer to check the stored data.

The fan unit 300 will be described with reference to fig. 4 and 11. Referring to fig. 4 and 11, the fan unit 300 may include a fan 310, power receivers (or drivers) 361 and 362, a fan housing 330, and at least one first magnetic body 340. According to an embodiment, the power receiver may comprise a coil 361 and a receiving driver 362.

The fan 310 refers to a member that generates wind when rotating. The coil 361 of the power receiver refers to a winding, and wirelessly receives power from the power supply 400. Although not shown in the drawings, the windings may be coated with an insulating material. The receiving driver 362 of the power receiver refers to a circuit including a rectifier, a Direct Current (DC)/DC converter, and the like. The receiving driver 362 receives Alternating Current (AC) power from the coil 361 and transmits the AC power to the rectifier, and the DC/DC converter converts DC power output from the rectifier into other DC power. The fan case 330 is a case on which the fan 310, the power receivers 361 and 362, the first magnetic body 340, and the like are mounted. The first magnetic body 340 refers to a magnetic body having a magnetic force, and at least one first magnetic body 340 may be included in the fan unit 300. Here, since each component forming the fan unit 300 is well known, a detailed description thereof will be omitted.

Referring back to fig. 1 to 3, when the fan unit 300 is employed and used as the electrical device 300, wind generated by the fan unit 300 and user's breath may be mixed and circulated in the inner space of the filter part 110. For example, when the user's breath is an inhalation, the valve 200 is closed. In this case, wind output from the fan unit 300 collides with the valve 200 and circulates in the inner space. The wind may lower the humidity or temperature in the inner space of the filter part 110 to be lower than that before the fan unit 300 is used and operated.

According to an embodiment, when the fan unit 300 is used as the electric device 300, humidity or temperature in the inner space of the filter part 110 may be reduced, and thus discomfort of a user may be reduced.

Meanwhile, the fan unit 300 may be provided to allow air output by the operation of the fan unit 300 to move toward the valve 200. As shown in fig. 1 and 3, the fan 310 of the fan unit 300 may be disposed at a position facing the valve 200. Since the air output from the fan 310 and the user's breath during exhalation collide with the valve 200, the valve 200 can be easily opened when the user's breath is exhalation.

That is, according to one embodiment, when the user's breath is an exhalation, the valve 200 may be easily opened by wind provided by the fan unit 300. Therefore, even when the user wears the respirator 1000, the user does not feel any inconvenience in breathing.

Next, the power supply 400, which is a component that supplies power to the electric device 300 using the wireless method as described above, will be described in detail with reference to fig. 5, 6, and 11.

Fig. 5 is a view illustrating the shape of the power supply 400, fig. 6 is a view illustrating the power supply 400 illustrated in fig. 5, which is attached to the filter part 110, and a part of the circuit illustrated in fig. 11 is a circuit of the power supply 400. Referring to fig. 5, 6 and 11, the power supply 400 may include a battery 410, a power supply holding part 420, at least one second magnetic body 430, a coil 440, a transmission driver 441 and a power supply case 450, but is not limited thereto.

The battery 410 supplies DC power. The battery 410 may be rechargeable. At least one second magnetic body 430 may be provided, and the at least one second magnetic body may be a magnetic body having a polarity opposite to that of the first magnetic body 340. The transmission driver 441 refers to a component that converts DC power supplied from the battery 410 into AC power. The coil 440 refers to a winding, and wirelessly transmits AC power formed by the transmission driver 441 to the coil 361 of the power receiver. Here, since the battery 410, the second magnetic body 430, the transmission driver 441, and the power supply case 450 are similar to well-known components, detailed descriptions thereof will be omitted. However, the coil 440 will be described in detail with reference to fig. 10.

The coil 440 may include a magnetic sheet 441 disposed on a bottom surface thereof, an adhesive member 442 disposed on the magnetic sheet 441, and a winding 443 wound around the adhesive member 442. The magnetic sheet 441 may have, for example, a thickness of 0.3mm and a magnetic permeability of 150, but is not limited thereto. The windings 443 may be coated with an insulating material. The structure of the coil 440 may be equally applied to the coil 361 of the power receiver.

Meanwhile, referring back to fig. 5, the power supply holding part 420 may be a fastening device having a hook shape, or may be a part formed to extend from the power supply case 450. The power source holding part 420 may be fastened to the valve housing 600. In one embodiment, the power source retention portion 420 may be secured to portions of the valve housing 600, such as the extension portion 610. To this end, the valve housing 600 may include an accommodating portion 610 (refer to fig. 6) accommodating the power supply holding portion 420. Accordingly, the power supply 400 may be more securely fastened to the valve housing 600.

However, according to an embodiment, the power supply holding part 420 may be formed in a shape different from that shown in fig. 5. In one embodiment, the power source holding part 420 and the power source housing 450 including the power source holding part 420 may be formed as shown in fig. 7 to 9.

Referring to fig. 7 to 9, the power supply case 450 may be formed to cover the valve case 600. In addition, the power supply holding part 420 may be formed in the shape of a pair of protruding parts protruding inward from the inner circumferential surface of the power supply case 450 and facing each other. The power supply housing 450 is suitable for any type of respirator 1000 that employs a valve housing having the same external shape as the valve housing 600 shown in fig. 7.

In this case, the valve housing 600 may include a receiving portion 610 to which the power supply maintaining portion 420 is fastened. When the power supply case 450 is disposed to cover the valve case 600, the power supply maintaining part 420 may be coupled to the receiving part 610, and thus the power supply 400 may be more firmly coupled to the valve case 600.

Meanwhile, although not shown in the drawings, the power supply 400 may further include a switching part that prevents the power supplied from the battery 410 from being supplied to the transmission driver 441. When the switch section is turned on, the power supplied from the battery 410 is supplied to the transmission driver 441. When the switching part is turned off, the power supplied from the battery 410 may not be supplied to the transmission driver 441.

As described above, when a user wears the respirator according to one embodiment, an electrical device disposed in the interior of the filter portion (i.e., the interior space) may receive power from a power source disposed outside the filter portion using a wireless method. Due to the wireless method, a wire connecting the electric device and the power source is unnecessary, and it is not necessary to form a hole for the wire to pass through at the filter portion. Therefore, since there is no member connecting the inner space of the filter house with the outside at the filter house as long as the valve is closed, the inner space of the filter house can be sealed from the outside, and thus the performance of the respirator and the like can be improved.

In addition, the electrical device and the power source may be attached to the filter portion due to magnetic attraction, and may also be aligned due to magnetic attraction.

Further, when the fan unit is used as an electric device, by mixing the user's breath with the wind of the fan unit, the user's discomfort caused by the increase in humidity or temperature in the internal space of the filter portion can be reduced.

Furthermore, when the user's breath is exhalation, the valve can be easily opened by the fan unit or the wind provided by the user's breath and the wind of the fan unit. Therefore, even when the user wears the respirator, the user does not feel any inconvenience in breathing.

Fig. 12 is a front view illustrating a respirator 1000 according to an embodiment different from that of fig. 1. Referring to fig. 12, the folding line 130 may be formed at the center of the filter part 110. Based on the fold line 130, the filter portion 110 may be divided into a right area 140 and a left area 150 (based on the right and left sides of the user's face). As shown in fig. 12, the valve housing 600 and the power supply 400 may be disposed in the right area 140, but the valve housing 600 and the power supply 400 may be disposed in the left area 150 differently from fig. 12. Further, although not shown in the drawings, the opening 120 and the valve 200 may be provided at a side where the valve housing 600 and the power supply 400 are provided.

Meanwhile, the filter part 110 may be folded with the folding line 130 as a boundary. To this end, as described above, the filter part 110 may include a foldable material. In fig. 12, the fold line 130 is formed in the center of the filter part 110, and the valve housing 600 and the power source 400 are disposed in the right area 140 instead of the center area. The filter house 110 of such a shape is easily folded to allow the left and right sides to be symmetrical to each other based on the folding line 130 formed at the center of the filter house.

However, one folding line 130 formed at the center of the filter part 110 is merely an example. For example, the folding line 130 may be formed at another position than the center of the filter part 110. In addition, two or more folding lines 130 may be formed. In this case, the filter part 110 may be folded based on each of the folding lines 130. Here, the positions of the opening 120, the power supply 400, and the valve housing 600 may be different from those shown in fig. 12.

Meanwhile, as described above, the electric device 300 may be attached to the filter part 110 by magnetic attraction. However, the electrical device 300 may not be firmly attached to the filter part 110 only by the magnetic attraction, so that the electrical device 300 may be separated from the filter part 110 when used according to circumstances. To prevent this, according to an embodiment, an additional component may be added between the electrical device 300 and the filter part 110, which will be described with reference to fig. 13 and 14.

Fig. 13 is a view of an electrical device 300 further including an electrical device holder 350. Here, the other components except for the electric device holding part 350 are the same as those of the electric device 300 described above. Therefore, the description of the same components will be omitted hereinafter.

Referring to fig. 13, the electrical device holder 350 is referred to as a fan unit holder 350, and the fan housing 330 may include at least one electrical device holder 350 attached thereto. The electrical device holding part 350 may have a shape protruding from the fan housing 330.

Fig. 14 is a view illustrating the electrical device 300 coupled to the filter part 110 shown in fig. 13. Referring to fig. 14, the electrical device holder 500 (or the fan unit holder 500) is attached to one surface of the filter part 110, that is, an inner surface of the filter part 110 facing the face of the user. As shown in fig. 14, the electrical device holding part 350 may be inserted into the electrical device holder 500, and thus the electrical device 300 may be securely coupled to one surface of the filter part 110.

For this, only both end portions of the electrical device holder 500 are attached to the filter part 110, and the middle portion thereof has a lattice structure to be spaced apart from the filter part 110.

However, the electric device holding part 350 and the electric device holder 500 having the above-described shapes are merely examples. For example, the electrical device holding part 350 and the electrical device holder 500 may employ a Velcro method. Alternatively, the electrical device holder 350 is implemented in the form of an adhesive without providing the electrical device holder 500 so that the electrical device 300 may be attached to the filter part 110.

FIG. 15 is a graph showing the performance (relative humidity rate of change) of a respirator according to one embodiment compared to the performance of other products. Referring to fig. 15, A, B and C on the horizontal axis refer to other respirators, and D on the horizontal axis refers to a respirator according to one embodiment of the present disclosure.

In detail, in the case of the respirator denoted by a, the fan unit is disposed outside the filter house, i.e., on the outer surface of the filter house, and supplies outdoor air to the inner space of the filter house when driven. In the case of the respirator denoted by B, the fan unit is disposed on the outer surface of the filter house, i.e., outside the filter house, and discharges the air in the inner space of the filter house to the outside when driven. In the case of the respirator denoted by C, as in the respirator denoted by B, the fan unit is disposed on the outer surface of the filter house, i.e., outside the filter house, and discharges the air in the inner space of the filter house to the outside when driven.

The vertical axis shows the rate of change of humidity of the interior space of the filter house when the fan unit is driven by a driving voltage of 5V. In contrast to a to C, the relative humidity rate of change is checked according to the vertical axis, which is the greatest in D according to one embodiment of the present disclosure. It can be seen that the relative humidity change rate is maximized when the fan unit is disposed in the inner space of the filter part and the air in the inner space is discharged to the outside by driving the fan unit.

Fig. 16 is a graph showing the relative humidity change rate per driving voltage of the fan unit when the fan unit is disposed inside the filter portion and when the fan unit is disposed outside the filter portion. Referring to fig. 16, it can be seen that, when the driving voltages of the fan units are the same, the rate of change in relative humidity when the fan units are disposed inside the filter part is greater than that when the fan units are disposed outside the filter part. In addition, it can be seen that when the fan unit is disposed inside the filter unit, the rate of change in relative humidity when the driving voltage of the fan unit is high is greater than when the driving voltage of the fan unit is low, and so is the case when the fan unit is disposed outside the filter portion.

Although the technical concept of the present disclosure has been exemplarily described above, various modifications and changes may be made by those of ordinary skill in the art without departing from the essence of the present disclosure. Therefore, the above-described embodiments of the present disclosure are not intended to limit but to explain the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. It is intended that the scope of the disclosure be defined by the following claims and their equivalents be included within the scope of the disclosure.

Claims

1. A respirator that comprises:

a filter portion including an opening and forming an interior space between the respirator and a localized area of a user's face when the respirator is worn by the user;

a valve that allows air to flow through the opening or prevents the air from flowing through between the interior space and an exterior space of the filter house; and

a fan unit disposed in the interior space.

2. The respirator of claim 1, wherein the fan unit is configured to allow air output by operation of the fan unit to move toward the valve.

3. The respirator of claim 1, wherein the fan unit and the valve allow the air to flow to the exterior space only when the user's breath is an exhalation.

4. The respirator of claim 1, wherein the fan unit is detachable from the filter portion.

5. The respirator of claim 1, further comprising a power source that supplies power to the fan unit,

wherein the power source comprises a battery and is detachable from the filter portion.

6. The respirator of claim 1, wherein the fan unit is attached to one surface of the filter portion opposite the interior space, the respirator further comprising a power source attached to the other surface of the filter portion opposite the one surface to supply power to the fan unit.

7. The respirator of claim 6, wherein the fan unit comprises a first magnetic body,

wherein the power supply includes a second magnetic body having a polarity opposite to that of the first magnetic body, and

wherein the fan unit and the power supply are respectively attached to the filter part with the filter part interposed therebetween due to an attractive force between the first magnetic body and the second magnetic body.

8. The respirator of claim 6, further comprising a fan unit retainer attached to the one surface of the filter portion,

wherein the fan unit includes a fan unit retaining portion coupled to the fan unit retainer.

9. The respirator of claim 6, wherein the fan unit is attached to the one surface of the filter portion by a velcro process.

10. The respirator of claim 6, wherein the fan unit is attached to the one surface of the filter portion by an adhesive.

11. The respirator of claim 6, further comprising a valve housing, the valve housing providing a space in which the valve is disposed and the valve housing including a receiving portion,

wherein the power supply includes a power supply holding portion coupled to the receiving portion.

12. The respirator of claim 1, further comprising a power source that supplies power to the fan unit using a wireless method,

wherein the fan unit includes a power receiver that is provided at a position facing the power supply with the filter interposed therebetween, and the power receiver receives the power supplied by the power supply using the wireless method.

13. The respirator of claim 12, wherein each of the power source and the power receiver comprises a coil.

14. The respirator of claim 12, wherein the power supply supplies power using any one of a magnetic induction method, a magnetic resonance method, and a capacitive method as the wireless method.

15. The respirator of claim 1, wherein the fan unit comprises a fan housing coupled to the filter portion, a fan disposed in the fan housing, and a driver that drives the fan, and further comprising a power source that supplies power to the driver.

16. The respirator of claim 15, wherein the fan unit further comprises a first magnetic body,

wherein the fan housing and the power supply are attached to the filter part with the filter part interposed therebetween due to an attractive force between the first magnetic body and the second magnetic body.

17. The respirator of claim 1, wherein the filter portion is foldable about at least one fold line formed at the filter portion as a fold margin.

18. The respirator of claim 1, wherein the filter portion is divided into at least two regions,

wherein the opening is provided in any one of the at least two regions, and

wherein the positions of the valve and the fan unit to which the filter portion is attached are determined according to which of the at least two regions the opening is provided in.

19. The respirator of claim 18, wherein the valve and the fan unit are attached to the same region of the at least two regions.

20. The respirator of claim 1, wherein the filtering portion is divided into a left area that covers a left partial area of the face and a right area that covers a right partial area of the face,

wherein when the opening is disposed in the left region, the valve and the fan unit are attached to the left region, and

wherein the valve and the fan unit are attached to the right region when the opening is disposed in the right region.