KR20220126317A - Breathable pad and gas circulation device including the same - Google Patents

Abstract

A breathable pad according to embodiments of the present invention comprises: an upper layer sheet including a plurality of ventilation holes and being in contact with the skin; a lower layer sheet; a bonded part formed by bonding the outer circumferential surfaces of the upper layer sheet and the lower layer sheet; and an inner space formed between the upper layer sheet, the lower layer sheet, and the bonded part on the outside. The bonded part may include a communication member connecting part communicating with the inner space. Therefore, the breathable pad can be attached to disposable sanitary products or underwear to cause gas circulation and control moisture, and can prevent skin troubles such as eczema, bedsores, and diaper rash caused by wearing disposable sanitary products.

Description

Breathable pad and gas circulation device including the same

The present invention relates to a breathable pad and a gas circulation device comprising the same.

Hygiene products such as diapers and sanitary napkins have been used for a long time by various users of all ages and genders. For example, fabric diapers such as cotton and small diapers have been used from the long past, and suitable materials and functions have been subdivided due to the limitations of cotton fabrics and have been compounded into current hygiene products.

Disposable sanitary products currently on the market can provide the convenience of quick wearing and post-processing, and accordingly, the usage of disposable sanitary products has gradually increased. The main materials used for disposable hygiene products include non-woven fabrics, super absorbent polymers, and moisture-permeable films. Among the materials constituting the diaper, the non-woven fabric is mainly used as a surface material in direct contact with the skin. The wet-laid nonwoven fabric including rayon and pulp has a problem in that strength decreases when wet. A dry nonwoven fabric including an adhesive may cause a decrease in flexibility due to an adhesive component. Currently, spunbond, spunlace, and thermalbond nonwoven fabrics using polyolefin-based materials are mainly used as nonwoven materials, and the weight and strength have been increased. Super Absorbent Polymer (SAP) is a material for absorbing defecation and menstrual blood, and polyacrylate-based polymers with very high absorption and retention capacity compared to conventional absorbent paper or cotton pulp are mainly used.

For disposable hygiene products, chemical products are mainly used for reasons of economy, productivity, and functionality. In particular, in the case of disposable sanitary products, ventilation is not performed because the inside and outside are separated, and excessive humidity increase due to sweat, urine, menstrual blood, etc. may be induced at the wearing part of the disposable hygiene product. Therefore, when disposable hygiene products are worn for a long period of time, skin troubles such as eczema, itchy skin, diaper rash, and bedsores may occur.

For example, Korean Patent Registration No. 10-2079316 discloses a disposable diaper for accommodating excreted urine and feces, but does not provide a solution for reducing moisture in the diaper wearing area.

Korean Patent No. 10-2079316

One object of the present invention is to provide a breathable pad that can remove moisture from the wearing portion.

Another object of the present invention is to provide a gas circulation device capable of smoothly removing moisture in a portion where the breathable pad is worn by controlling the supply and discharge of air communicated to the breathable pad.

The breathable pad according to the exemplary embodiments includes a plurality of ventilation holes and includes an upper layer sheet, a lower layer sheet in contact with the skin, a bonding portion formed by bonding the outer peripheral surfaces of the upper layer sheet and the lower layer sheet, and between the upper layer sheet, the lower layer sheet and the external bonding portion It may include an internal space formed in and a communication member connecting portion communicating with the internal space.

In some embodiments, the junction portion may be formed with a side ventilation hole communicating with the inner space to suck or discharge air to the side of the breathable pad.

In some embodiments, a plurality of internal bonding portions to which portions of the upper sheet and the lower sheet are bonded may be formed in the inner space.

In some embodiments, the inner joint portion may be formed to form a flow path that communicates with the ventilation hole, the inner space, and the communication member connecting portion.

In some embodiments, an opening/closing member for opening the ventilation hole when air is discharged from the internal space may be formed in the ventilation hole.

In some embodiments, the upper sheet may include a film layer; an absorption layer laminated on the film layer; and a surface layer laminated on the absorbent layer, wherein the ventilation hole may be formed in the upper sheet along a periphery of the absorbent layer so as not to penetrate the absorbent layer.

In some embodiments, the upper sheet may further include a fabric layer on any one or more of the lower sheet and the lower sheet upper.

In some embodiments, an embossing pattern may be formed on one or more of the lower surface of the upper sheet and the upper surface of the lower sheet.

The gas circulation device according to the exemplary embodiments is an air pump having the above-described breathable pad, an air inlet and an air outlet formed therein, a communication space is formed therein, and a connector, a supply port, an intake port, an intake and exhaust port, and a valve member to form It may include an air control valve, a first connecting member connecting the air outlet and the supply port, and a second connecting member connecting the air inlet and the intake port.

In some embodiments, the connector may be connected to the connecting part of the communication member of the breathable pad.

In some embodiments, the valve member may variably divide the communication space into a first area and a second area according to an air flow communicating with the air control valve.

In some embodiments, the valve member is configured such that when the air is supplied from the air control valve to the breathable pad, the connector and the supply port communicate with each other in the first region, and the intake port and the intake and exhaust port communicate with the intake and exhaust port in the second region. It may be located in the first position.

In some embodiments, the valve member is configured such that, when air is sucked from the breathable pad to the air control valve, the connector and the intake port communicate with each other in the first region, and the supply port and the intake and exhaust port communicate with the intake and exhaust port in the second region. It can be located in 2 positions.

In some embodiments, the gas circulation device further includes an air analyzer and a control unit, the air analyzer is connected to the intake and exhaust port, and the control unit is connected to the air analyzer, the air control valve and the air pump to the gas circulation device operation can be controlled.

In some embodiments, the air pump may be a diaphragm pump or a fan blade pump.

In some embodiments, the air pump may be formed in plurality.

In some embodiments, the gas circulation device may further include a filter attached to the first connection member or the second connection member.

In some embodiments, the gas circulation device may further include a wireless transceiver connected to the control unit.

A breathable pad according to embodiments of the present invention includes a plurality of ventilation holes and an upper sheet in contact with the skin; lower sheet; an external bonding portion formed by bonding the outer peripheral surfaces of the upper sheet and the lower sheet; an inner space formed between the upper sheet, the lower sheet, and the external bonding portion; and a communication member connecting portion communicating with the inner space.

The breathable pad can be applied to disposable hygiene products or underwear and come into contact with the user's skin, and it can control the moisture in the worn area and induce gas circulation to prevent skin troubles such as eczema, diaper rash, skin irritation, and pressure sores. have.

The gas circulation device according to the embodiments of the present invention may include a breathable pad, an air pump, an air control valve, and a connecting member, and can smoothly supply gas in a predetermined direction through the air control valve and easily control circulation. can

1 to 8 are cross-sectional views illustrating a breathable pad according to example embodiments.
9 and 10 are plan views illustrating a breathable pad according to example embodiments.
11 is a schematic diagram illustrating a gas circulation device according to exemplary embodiments.
12 is a plan view illustrating a configuration and an operation method of an air control valve according to exemplary embodiments.

A breathable pad according to embodiments of the present invention includes a plurality of ventilation holes and an upper sheet in contact with the skin; lower sheet; an external bonding portion formed by bonding the outer peripheral surfaces of the upper sheet and the lower sheet; an inner space formed between the upper sheet, the lower sheet, and the external bonding portion; and a communication member connecting portion communicating with the inner space.

Therefore, when applied to disposable hygiene products or underwear, it is possible to induce gas circulation and control moisture on the wearing surface, and it is possible to prevent skin troubles such as eczema, bedsores, and diaper rash caused by wearing disposable hygiene products.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, this is merely exemplary and the present invention is not limited to the specific embodiments described by way of example.

In the drawings below, for example, two directions parallel to and intersecting with the upper surface of the breathable pad are defined as a first direction and a second direction. The first direction and the second direction may cross each other perpendicularly. For example, the first direction may be a width direction of the breathable pad, and the second direction may be a length direction of the breathable pad. In addition, a direction perpendicular to the upper surface of the breathable pad is defined as a third direction. The third direction may correspond to a thickness direction of the breathable pad.

1 to 8 are schematic cross-sectional views for explaining a breathable pad according to example embodiments. 9 and 10 are plan views illustrating a breathable pad according to example embodiments.

1 to 10 , a breathable pad 100 according to exemplary embodiments includes an upper sheet 110 including a plurality of ventilation holes 111 , a lower sheet 120 , the upper sheet 110 and the A bonding portion 130 formed by bonding the outer peripheral surface of the lower sheet 120 may be included.

In some embodiments, the upper sheet 110 may include a surface layer 112 , an absorption layer 113 , and a film layer 114 . The upper sheet may include a film layer 114 , an absorption layer 113 laminated on the film layer 114 , and a surface layer 112 laminated on the absorption layer 113 .

The surface layer 112 may be disposed on the top surface in direct contact with the user's skin. A material used in the art may be used for the surface layer 112 . Although not limited thereto, for example, nonwoven fabric, cloth, paper, cotton, synthetic resin, etc. may be used. Preferably, a pure cotton nonwoven fabric may be used.

The absorption layer 113 includes a liquid dispersion layer that quickly absorbs and disperses a liquid such as urine flowing through the surface layer 112 from the surface layer, and a liquid storage layer that absorbs and stores the liquid flowing in from the liquid dispersion layer so as not to be re-discharged. may include

The liquid storage layer may include pulp and polymer as a material for absorbing and storing liquid such as urine.

The film layer 114 prevents the liquid stored in the absorption layer 113 from leaking out of the upper sheet 110 . In particular, it prevents the liquid from leaking into the internal space 140 through which air is communicated. The film layer 114 may be made of a material that does not substantially pass a gas or liquid. Although not limited thereto, for example, a synthetic polymer such as polyethylene, polyurethane, polyester, or acrylic may be used.

The ventilation hole 111 may be formed to communicate from the inner space 140 to the surface of the upper sheet 110 that is in direct contact with the user's skin. Air supplied or sucked into the inner space 140 of the breathable pad 100 may be sprayed or sucked in a direction facing the skin through the plurality of ventilation holes 111 . Therefore, it is possible to control the humidity and suppress friction between the skin and the surface of the hygiene product, and it can cause gas circulation inside the hygiene product that is not easily ventilated, and skin diseases such as the anus, perineum, buttocks where the hygiene product is worn This can be prevented from occurring. The ventilation hole 111 may be formed in the upper sheet 110 through a perforation or perforation process such as punching, for example. The ventilation holes 111 may be formed in the entire area of the upper sheet 110 , or may be formed in the upper sheet 110 along the periphery of the absorbent layer 113 so as not to penetrate the absorbent layer 113 .

The shape of the ventilation hole 111 is not limited, and for example, it may be formed in a shape of a circle, a straight line, a cross shape, etc. You can also adjust your back.

In some embodiments, the opening and closing member 115 may be formed in the ventilation hole 111 . The opening/closing member 115 may open the ventilation hole 111 only when air is discharged from the internal space 140 . For example, when the air is discharged to the outside of the upper sheet 110, the opening/closing member 115 opens the ventilation hole 111 to supply air to the wearing surface, and connects the air in the inner space 140 to the communication member connection part ( 150), the opening/closing member 115 may close the ventilation hole 111 to prevent the upper sheet 110 from sticking to the user's skin.

The lower sheet 120 is bonded to the upper sheet 110 to form an internal space 140 through which the air can communicate with the outside in the breathable pad 100, and at the same time increase the durability of the breathable pad 100 to increase the absorbent layer ( 113) serves to prevent leakage of the liquid stored in the breathable pad 100 to the outside. The lower sheet 120 may likewise be made of a material through which gas or liquid does not pass. The lower sheet 120 may be, for example, a material that does not leak liquid containing urine, like the film layer 114, without limitation, is coated with a material that does not substantially leak, or a film is additionally attached may be formed.

The bonding portion 130 is a portion formed by bonding the outer peripheral surfaces of the upper sheet 110 and the lower sheet 120 . The bonding portion 130 may be used without limitation in bonding methods such as thermal bonding and ultrasonic bonding, and the bonding portion and the non-adhesive portion may be easily adjusted using the bonding method. For example, when the communication member connection part 150 is formed in the junction part, the remaining parts except for the communication member connection part 150 and the side ventilation hole 131 which should communicate with the outside using thermal bonding can be selectively adhered. .

The communication member connection part 150 may mean a portion into which a hose, which is a flow path for transferring air supplied or sucked from the gas circulation device 200 to the breathable pad 100 , is inserted. For example, the communication member connection part 150 may have a protruding shape so that the user can smoothly insert the hose into the breathable disposable hygiene product, and the communication member connection part 150 itself is directly connected to the gas circulation device 200 . It may be formed in a combined form. The communication member connection part 150 is not particularly limited thereto, but may protrude in the first direction (the width direction of the breathable disposable hygiene product) or the second direction (the length direction of the breathable disposable hygiene product), and is preferably a breathable disposable hygiene product. It may protrude in the second direction so that the hose can be smoothly inserted into the hygiene product.

In some embodiments, the communication member connecting portion 150 may be formed in the upper sheet 110 , the lower sheet 120 and/or the bonding portion 130 to communicate with the inner space 140 .

For example, one end of the breathable pad 100 protrudes in the longitudinal direction so that the hose can be inserted into the inner space 140 between the upper sheet 110 and the lower sheet 120, and the direct communication member connection part 150. may be formed, and a hose or a hose connection device may be separately attached to the one end protruding.

In some embodiments, the junction 130 may include a side vent 131 . The side ventilation holes 131 may be formed to communicate with the internal space 140 , and may be formed in plurality. The side ventilation hole 131 may be a portion in which the upper sheet 110 and the lower sheet 120 are not sealed and/or adhered. It is possible to induce gas circulation in the side direction as well as gas circulation in the upper surface direction by the side ventilation hole 131 . For example, it is possible to suppress skin diseases that may occur around the anus, perineum, buttocks, etc. by supplying air to the user's groin and lowering the humidity inside the hygiene product.

The inner space 140 may be formed between the upper sheet 110 , the lower sheet 120 , and the bonding portion 130 . An empty space in which air can move may be formed between the upper sheet 110 and the lower sheet 120 by the inner space 140 , and the ventilation hole 111 , the communication member connection part 150 , and the side ventilation hole 131 . ) to communicate with the outside world.

In some embodiments, as shown in FIGS. 3 and 4 , the inner space 140 may include an inner junction 141 . The inner bonding portion 141 is a portion where the upper sheet 110 and the lower sheet 120 are bonded in the inner space 140 , and may be formed by bonding methods such as thermal bonding and ultrasonic bonding. The internal junction 141 may be formed at a position that does not match the position of the ventilation hole 111 , and may form a flow path capable of controlling the flow of air supplied to the internal space 140 . The shape and arrangement of the internal space 140 may be variously configured by the internal junction part 141 .

In some embodiments, the upper sheet 110 and the lower sheet 120 may be formed to have substantially the same or similar size and shape so as to overlap entirely. Accordingly, the breathable pad 100 may have a laminate structure in which a plurality of sheets are overlapped.

In some embodiments, as shown in FIGS. 5 and 6 , the breathable pad 100 is a fabric layer 160 on any one or more of the lower surface of the upper sheet 110 and the upper surface of the lower sheet 120 . ) may be further included. In this case, when air is sucked from the inner space 140 , it is possible to prevent a phenomenon in which the upper sheet 110 and the lower sheet 120 are attached to each other so that air is not sucked.

In some embodiments, as shown in FIGS. 7 and 8 , the breathable pad 100 is embossed on any one or more of the lower surface of the upper sheet 110 and the upper surface of the lower sheet 120 . A pattern 170 may be formed. In this case, when air is sucked from the inner space 140 , it is possible to prevent a phenomenon in which the upper sheet 110 and the lower sheet 120 are attached to each other so that air is not sucked. Although not particularly limited thereto, for example, the embossing pattern 170 may be formed using heat, pressure, ultraviolet rays or electron beams, or may be formed by treatment with a resin or a chemical. In addition, the embossing pattern 170 may be formed in a shape protruding from the lower portion of the upper sheet 110 or the upper portion of the lower sheet 120 in the direction of the inner space 140 , and may have various shapes such as a hemisphere, a cylinder, a polygonal pillar, a cone, etc. may consist of a repeating pattern alone or in combination.

11 is a schematic diagram illustrating a gas circulation device 200 according to exemplary embodiments.

Referring to FIG. 11 , the gas circulation device 200 according to embodiments of the present invention includes an air pump 210 in which the above-described air permeable pad 100 , an air intake port 211 and an air discharge port 212 are formed, and the interior A communication space 221 is formed in the air control valve 220, which forms a connector 222, a supply port 223, an intake port 224, an intake/exhaust port 225, and a valve member 226, the air discharge port and a first connection member 230 for connecting the 212 and the supply port 223 and a second connection member 240 for connecting the air intake 211 and the intake port 224, wherein the connector ( 222 may be connected to the communication member connection part 150 of the breathable pad 100 .

The air pump 210 provides a flow of air for injecting or sucking air into the breathable pad 100 through the air control valve 220 . The air pump 210 may suck in air through the air inlet 211 and discharge the air through the air outlet 212 .

As the air pump 210 , a pump capable of substantially supplying or sucking gas to the breathable pad 100 having an air ventilation structure may be used without limitation. Preferably, it may include a fan blade type air blower or a diaphragm type air pump. As a fan blade type air blower or a diaphragm type pump, a pump that supplies air to generate pumping and conveying of a fluid may be used without limitation. When a fan blade type air blower or a diaphragm type pump is used, a sufficient flow rate of gas can be supplied even with a low voltage and low capacity power source. The air pump 210 may be configured in plurality.

In some exemplary embodiments, the air pump 210 may include a regulator that adjusts the gas flow rate and supply time. In addition, it can be operated by receiving power from an auxiliary battery, a smartphone, a lithium ion battery, a storage battery, and other chargers and dischargers. In this case, it is possible to use the gas circulation device by simply supplying power even when moving.

The air control valve 220 may form a connector 222 , a supply port 223 , an intake port 224 , an intake and exhaust port 225 , and a valve member 226 .

The connector 222 is a part connected to the communication member connection part 150 of the breathable pad 100 using a member such as a hose, and supplies air to the breathable pad 100 or sucks air from the breathable pad 100. make it possible

The supply port 223 supplies air discharged from the air pump 210 to the air control valve 220 to supply air to the breathable pad 100 through the connector 220 or through the intake/exhaust port 225 . It is possible to exhaust air to the outside. The supply port 223 may be connected to the air outlet 212 of the air pump 210 and the first connecting member 230 .

The intake port 224 may supply air sucked from the breathable pad 100 to the air control valve 220 through the connection port 222 or from the outside through the intake/exhaust port 225 to the air pump 210. . The intake port 224 may be connected to the air intake port 211 of the air pump 210 and the second connecting member 240 .

The intake/exhaust port 225 serves to suck air into the gas circulation device 200 from the outside or discharge air from the gas circulation device 200 to the outside.

12 is a plan view illustrating a configuration and an operation method of an air control valve according to exemplary embodiments.

Referring to FIG. 12 , the valve member 226 may control the direction of the flow of air to supply or suck air to the breathable pad 100 . To this end, the valve member 226 divides the communication space 221 into the first area 227 and the second area 228 according to an air flow communicating with the air control valve 220 through an operation such as movement or rotation. can be variably separated. The first area 227 and the second area 228 refer to areas in which the communication space 221 is divided by the control valve 220 .

In some embodiments, the valve member 226 has a connector 222 and a supply port 223 in the first region 227 when air is supplied from the air control valve 220 to the breathable pad 100 . In communication with each other, the intake port 224 and the intake/exhaust port 225 may communicate with each other in the second region 228 and may be positioned at a first position. In this case, the external air is the intake and exhaust port 225 , the second region 228 of the communication space 221 , the intake port 224 , the second connection member 240 , the air intake port 211 , the air pump 210 , and the air The discharge port 212 , the first connection member 230 , the supply port 223 , the first region 227 of the communication space 221 , and the connection port 222 flow in this order, so that the air flows into the breathable pad 100 . can be supplied.

In some embodiments, the valve member 226 includes a connector 222 and an intake port 224 in the first region 227 when air is sucked from the breathable pad 100 to the air control valve 220 . may communicate with each other, and may be positioned at a second position such that the supply port 223 and the intake/exhaust port 225 communicate with each other in the second region 228 . In this case, the air sucked from the breathable pad 100 is the connector 222 , the first region 227 of the communication space 221 , the intake port 224 , the second connection member 240 , the air intake port 211 , and the air The pump 210, the air outlet 212, the first connection member 23, the supply port 223, the second region 228 of the communication space 221, and the air intake and exhaust port 225 flow in this order, so that the air permeability Air sucked from the pad 100 may be discharged to the outside of the gas circulation device 200 .

In some embodiments, the gas circulation device 200 may include an air analyzer 250 and/or a control unit 260 .

The air analyzer 250 may be connected to the intake/exhaust port 225 to analyze the temperature, humidity, etc. of the air discharged from the gas circulation device 200 or supplied to the gas circulation device 200 . Accordingly, it is possible to detect the state of the breathable pad 100 and adjust the operation of the gas circulation device 200 accordingly.

The control unit 260 may sense or control the operation of the air pump 210 or the operation of the valve member 226 of the air control valve 220 . Also, it is possible to control the operation of the gas circulation device according to a preset value based on the information obtained from the air analyzer 250 .

In some embodiments, the first connecting member 230 or the second connecting member 240 may further include a filter 270 . The filter 270 is attached to the hose 120 to control the flow rate, speed, flow, pollution degree, etc. of air supplied or sucked from the air pump 210 to provide the breathable pad 100 .

As the filter 270, a filter capable of removing dust, harmful gas, and the like in the air may be used without limitation. For example, it may include a membrane filter, a semi-HEPA filter, a HEPA filter, and the like.

In some embodiments, the gas circulation device 200 may include a wireless transceiver 280 connected to the control unit.

The wireless transceiver 280 may use a known method, and through this, the state of the gas circulation device 200 may be grasped or the operation may be controlled using a device such as a smart phone or a remote controller.

100: breathable pad 110: upper sheet
111: vent 112: surface layer
113: absorption layer 114: film layer
115: opening and closing member 120: lower sheet
130: abutment 131: side vents
140: interior space 141: interior junction
150: communication member connection unit 160: fabric layer
170: embossing pattern 200: gas circulation device
210: air pump 211: air intake
212: air outlet 220: air control valve
221: communication space 222: connector
223: supply port 224: intake port
225: intake and exhaust port 226: valve member
227: first area 228: second area
230: first connecting member 240: second connecting member
250: air analyzer 260: control unit
270: filter 280: radio transceiver

Claims (15)

an upper sheet comprising a plurality of ventilation holes and in contact with the skin;
lower sheet;
a bonding portion formed by bonding the outer peripheral surfaces of the upper sheet and the lower sheet;
an inner space formed between the upper sheet, the lower sheet, and the bonding part; and a communication member connecting portion communicating with the inner space, the breathable pad.
The breathable pad for hygiene products according to claim 1, wherein the joint is formed with a side ventilation hole communicating with the inner space to suck or discharge air to the side of the breathable pad.
The breathable pad according to claim 1, wherein a plurality of internal bonding portions to which portions of the upper sheet and the lower sheet are bonded are formed in the inner space.
The breathable pad according to claim 3, wherein the inner joint portion is formed to form a flow path that communicates with the ventilation hole, the inner space, and the communication member connecting portion.
The breathable pad according to claim 1, wherein an opening/closing member for opening the ventilation hole is formed in the ventilation hole when air is discharged from the internal space.
The method according to claim 1, The upper sheet is a film layer;
an absorption layer laminated on the film layer; and
a surface layer laminated on the absorbent layer;
The ventilation hole is formed in the upper sheet along the periphery of the absorbent layer so as not to penetrate the absorbent layer, the breathable pad.
The breathable pad according to claim 1, further comprising a fabric layer on any one or more of the lower sheet of the upper layer and the upper part of the lower sheet.
The breathable pad according to claim 1, wherein an embossing pattern is formed on at least one of a lower surface of the upper sheet and an upper surface of the lower sheet.
The breathable pad according to claim 1 ;
an air pump in which an air inlet and an air outlet are formed;
an air control valve having a communication space formed therein and forming a connecting port, a supply port, an intake port, an intake and exhaust port, and a valve member;
a first connecting member connecting the air outlet and the supply port; and
and a second connecting member connecting the air intake port and the intake port,
The connector is connected to the communication member connection part of the breathable pad,
wherein the valve member variably divides the communication space into a first area and a second area according to an air flow communicating with the air control valve.
10. The method according to claim 9, wherein the valve member comprises a first so that when air is supplied from the air control valve to the breathable pad, the connector and the supply port communicate with each other in the first region, and the intake port and the intake and exhaust port communicate with the intake and exhaust port in the second region. A gas circulating device located in position.
The method according to claim 9, wherein the valve member is in a second position so that when air is sucked from the breathable pad to the air control valve, the connector and the intake port communicate with each other in the first region, and the supply port and the intake and exhaust port communicate with the intake and exhaust port in the second region. Located in the gas circulation device.
10. The method of claim 9, further comprising: an air analyzer; and a control unit,
The air analyzer is connected to the intake and exhaust port,
The control unit is connected to the air analyzer, the air control valve and the air pump to control the operation of the gas circulation device, gas circulation device.
The gas circulation device according to claim 9, wherein the air pump is a diaphragm pump or a fan blade pump.
The gas circulation device according to claim 9, further comprising a filter attached to the first connecting member or the second connecting member.
The gas circulation device according to claim 12, further comprising a wireless transceiver connected to the control unit.

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