[Problem] To provide a mask with which it is possible to easily form a three-dimensional shape that can ensure a favorable contact with a wearer's face during use, and easily maintain a favorable use state. [Solution] A mask 1 comprises a mask body 2 exposed to the outside and ear loops 4, 4 on both sides of the mask body 2. The mask body 2 is provided with a central portion 6 that covers a central portion of the wearer's face along a vertical direction, folded portions 7, 7 that are connected to sides of the central portion 6 and folded along the vertical direction of the mask body 2, and side portions 8, 8 that are connected to sides of the folded portions 7, 7 and cover sides of the wearer's face. The central portion 6 includes upper tapered portions 10, 10 and lower tapered portions 11, 11 that have widths in a left-right direction being reduced from the central portion 6 toward an upper side and a lower side respectively. In the mask body 2, the folded portions 7, 7 are folded when not used, and the folded portions 7, 7 are raised by tension of the ear loops 4, 4 during use to form a three-dimensional shape.
A mask includes a filter portion that is formed of an air-permeable sheet material and covers at least a nose and a mouth in wearing; a substantially annular face-contacting body that is joined to the filter portion, and is in contact with at least a vicinity of the nose and a vicinity of the mouth on a face in wearing; and a hook string to be hooked around either a head or an ear so that the filter portion and the face-contacting body are worn to the face. Here, a protrusion portion is arranged at least at a part of the face-contacting body to be in contact with at least a vicinity of the nose on the face in wearing to the face and press the filter portion to form a three-dimensional shape allowing the filter portion to conform to unevenness of the face.
The present invention suppresses deterioration of trapping efficiency in an air filter comprising multiple layers due to an adhesive used to integrate filter layers with each other. This air filter (1) comprises: a first filter layer (10) that is an air-permeable synthetic resin fiber layer; and second filter layers (20) that are air-permeable and that sandwich the first filter layer (10). The first filter layer (10) and the second filter layers (20) are integrated with each other via an adhesive layer (30) comprising multiple fibrous hot-melt rows that are distributed so as to form air-permeable gaps.
B01D 39/16 - Other self-supporting filtering material of organic material, e.g. synthetic fibres
B01D 39/12 - Filter screens essentially made of metal of wire gauzeFilter screens essentially made of metal of knitted wireFilter screens essentially made of metal of expanded metal
B01D 39/14 - Other self-supporting filtering material
D04H 1/593 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives to layered webs
5.
AIR RESPIRATOR AND FIREPROOF CLOTHING WORN WITH AIR RESPIRATOR
A back carrier of an air respirator includes a cooling conduit section having a meandering metal conduit. The cooling conduit section is interposed between a branching port having a pressure reducing valve built in and a medium-pressure hose. Breathable gas that is filled in a cylinder at high pressure, and adiabatically expanded via the pressure reducing valve flows into the cooling conduit section so as to exert a cooling effect around the cooling conduit section. Such an air respirator can be used for protective clothing and also for fireproof clothing.
[Problem] To provide a mask capable of ensuring good contact with the face of a wearer. [Solution] A mask 1 comprises: a filter part 2 that is formed of an air-permeable sheet material and covers at least the nose part and the mouth part when the mask 1 is worn; an almost annular face contact body 3 that is joined to the filter part 2 and is in contact with at least the periphery of the nose part and the periphery of the mouth part on the face when the mask 1 is worn; and a hook string 4 that is hooked around either the head part or the ear part so that the filter part 2 and the face contact body are put on the face. The mask 1 is configured such that at least a part of the face contact body 3 is provided with projections 8d, 8d that abut at least on the periphery of the nose part on the face when the mask 1 is put on the face and press the filter part 2 to form a three-dimensional shape, allowing the filter part 2 to fit the recesses and projections on the face.
[Problem] To provide an air respirator which can exert a cooling effect on the wearer of the air respirator, and fireproof clothing that uses said air respirator. [Solution] On a back carrier 20 of an air respirator 10, a cooling conduit part 15a is formed that comprises a meandering metal conduit 15. The cooling conduit part 15a is interposed between a medium-pressure hose 18 and a branching port 14 having a built-in pressure-reducing valve. A gas that has expanded adiabatically via the pressure reducing valve 16 from a gas cylinder 12 filled at high pressure with a breathable gas flows into the cooling conduit part 15a, exerting a cooling effect around the cooling conduit part 15a. In addition to being used for protective clothing, this air respirator can also be used for fireproof clothing.
A62B 7/02 - Respiratory apparatus with compressed oxygen or air
A62B 17/00 - Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
A41D 13/00 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
A41D 13/005 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
[Problem] To provide a mask in which adhesion to the face surface during wearing is increased without an increase in bulkiness when packaged, and which can be easily manufactured. [Solution] A mask 1 comprises: a filter part 2 comprising an air-permeable sheet material, at least one pleat being formed extending in the lateral direction, the pleat widening in the vertical direction during wearing to cover at least the nose and mouth; a face contact body 3 formed in a ring shape from an elastically deformable plate material, a circumferential edge part of the ring shape being joined to the filter part 2, the face contact body 3 contacting the face surface when worn, and an opening 21 being formed in the face contact body 3 at a position corresponding to at least the nose and mouth; and hanging strings 4 hung around either the head or the ears, the hanging strings 4 attaching the filter part and the face contact body to the face surface. The mask 1 is configured so that when the filter part 2 is widened in the vertical direction, the face contact body 3 elastically deforms so as to follow vertically, and the left and right parts of the face contact body 3 elastically deform and fit closely along the shape of the face surface.
Provided is a disposable mask for which the fit thereof is not compromised due to the mask shifting, even when the facial surface of the wearer moves as a result of conversation, changes in facial expression, or the like. A face contact body (30) of a disposable mask (10) comprises: a fixed section (31) that is bonded to an edge portion (22); a ring-shaped inner wall section (32) that extends inward from the fixed section (31); a central opening (33) surrounded by the inner wall section (32); a first layer (40) that is located on a front surface (21a) side; a second layer (50) that is located on a rear surface (21b) side; and an intermediate layer (60) that is located between the first and second layers (40, 50) in the front-rear direction (Z). The first and second layers (40, 50) and the intermediate layer (60) are bonded to each other through only the fixed section (31).
Provided is a disposable mask having no risk of a decrease in comfort, due to the fit against the surface of a face being maintained even when the mouth of a mask wearer is moved a relatively great amount. A face-contacting body (30) of a disposable mask (10) has: a fixed part (31) joined to a peripheral edge section (22); an annular inner peripheral wall (32) extending inward from the fixed part (31); a central opening (33) surrounded by the inner peripheral wall (32); a pad member (40) located on the front surface (21a) side; and a skin-side sheet (50) located on the rear surface (21b) side. The pad member (40) and the skin-side sheet (50) are joined to each other only via the fixed part (31).
This local air purification device (1) is provided with: a push hood (2) having an air flow open surface (23) for blowing out a purified uniform air flow; a guide (3) which is provided on the air flow open surface (23) side of the push hood (2), extends the uniform air flow from the air flow open surface (23) side toward a downstream side, and forms an open surface (31) on a downstream-side end section; and a first laminar flow generation device (41) which is arranged inside the guide (3) and blows out a laminar flow (41a) in a direction approximately perpendicular to the direction in which the uniform air flow is blown out from the air flow open surface (23). The first laminar flow generation device (41) moves dust generated inside the guide (3) to the peripheral edge of the inside of the guide (3) by means of the laminar flow (41a) blown out in the approximately perpendicular direction, and the push hood (2) discharges the dust, moved to the peripheral edge of the inside of the guide (3) by the first laminar flow generation device (41), out of the guide (3) by the uniform air flow blown out from the air flow open surface (23).
There is provided a mask provided with a latch that can maintain a latched state of fastening cords and suppress offsetting when the mask is worn.
A latch of a mask is in the form of an oblong thin sheet, and includes a first latching part for disengageably latching one fastening cord of the mask and a second latching part positioned on the second end edge side of the first latching part, having an insertion through hole for inserting the other fastening cord of the mask in advance. The first latching part has a guide channel extending from the first lateral edge and a first latching hole connected to the guide channel, and the second latching part has a second latching hole communicating with the insertion through hole, and having an outer shape smaller than that, and the first latching hole and the second latching hole are directed in directions opposed to one another in a lateral direction.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
11 - Environmental control apparatus
Goods & Services
(1) Pneumatic and hydraulic machines and controls for use with manufacturing aseptic clean rooms for production of chemical products and semiconductors; dust collectors for industrial chemical processing and semiconductor production; dust suction instruments, namely, cyclone dust collectors, filter filtration type dust collectors; dust-removing apparatus for aseptic manufacturing of chemical products and semiconductors; apparatus, namely, dust separating machines for forming clean zones for manufacturing chemical products and semiconductors
(2) Filters for respiratory masks other than for artificial respiration; dust masks; gas masks; welding masks; fireproof clothing, namely, masks; workmen's protective face-shields; filters for respiratory masks, namely, dust, gas and welding masks; clothing and gloves for use in welding for protection against accidents or injury; clothing for protection against chemicals and radiation; clothing for protection against biological hazards; fireproof garments; hood type air respiratory masks; aseptic and dust-removing apparatus for experiment and research purposes, namely, ventilators for controlling the aseptic environment of clean rooms
(3) Sanitary masks for dust isolation for medical purpose; surgical masks; anaesthetic masks; disposable sanitary masks for protection against viral infections; protective breathing masks for protection against viruses and germs; masks for medical personnel; washing and disinfection apparatus, namely, ionization apparatus for medical uses; water ionizer with cleansing and disinfection effects for medical purpose; aseptic and dust-removing apparatus for medical purposes, namely, air cleaners; apparatus for forming clean zones for medical purpose, namely, air cleaners for surgical rooms; apparatus for forming clean zones in laboratories for experiment and research purposes
(4) Blowers, namely, clean room installation air blowers; washing and sterilization apparatus for endoscope; sterilizers for medical use
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
11 - Environmental control apparatus
Goods & Services
(1) Pneumatic and hydraulic machines and controls for use with manufacturing aseptic clean rooms for production of chemical products and semiconductors; dust collectors for industrial chemical processing and semiconductor production; dust suction instruments, namely, cyclone dust collectors, filter filtration type dust collectors; dust-removing apparatus for aseptic manufacturing of chemical products and semiconductors; apparatus, namely, dust separating machines for forming clean zones for manufacturing chemical products and semiconductors
(2) Aseptic and dust-removing apparatus for experiment and research purposes, namely, ventilators for controlling the aseptic environment of clean rooms
(3) Aseptic and dust-removing apparatus for medical purposes, namely, air cleaners; apparatus for forming clean zones for medical purpose, namely, air cleaners for surgical rooms; apparatus for forming clean zones in laboratories for experiment and research purposes
(4) Blowers, namely, clean room installation air blowers
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Chemical processing machines and apparatus; Blowers, not for specified purposes; Pneumatic or hydraulic machines and instruments; Dust collectors for industrial purpose; Dust suction instruments; Aseptic and dust-removing apparatus for manufacturing chemical products and semiconductors; Apparatus for forming clean zones for manufacturing chemical products and semiconductors. Respiratory masks, other than for artificial respiration; Filters for respiratory masks other than for artificial respiration; Dust masks; Gas masks; Welding masks; Fireproof masks; Smokeproof masks; Protective masks; Filters for dust, gas and welding masks; Gloves for protection against accidents; Protective clothing against chemicals and pharmaceuticals; Fireproof garments; Face-protection masks against accidents; Power distribution or control machines and apparatus; Telecommunication machines and apparatus; electronic apparatus, namely computer hardware and computer software for the control of washing, disinfecting and ventilation apparatus; Aseptic and dust-removing apparatus for experiment and research purposes; Apparatus for forming clean zones for experiment and research purposes. Sanitary masks for medical purpose; Surgical masks; Anaesthetic masks; Masks for prevention of hospital infection; Masks for medical personnel; Sprays for medical purpose; Medical apparatus and instruments. Washing and disinfection apparatus; Water ionizer with cleansing and disinfection effects for medical purpose; Washing and sterilization apparatus for endoscopes; Apparatus for forming clean zones for medical purpose.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Chemical processing machines and apparatus; Blowers, not for specified purposes; Pneumatic or hydraulic machines and instruments; Dust collectors for industrial purpose; Dust suction instruments; Aseptic and dust-removing apparatus for manufacturing chemical products and semiconductors; Apparatus for forming clean zones for manufacturing chemical products and semiconductors. Respiratory masks, other than for artificial respiration; Filters for respiratory masks other than for artificial respiration; Dust masks; Gas masks; Welding masks; Fireproof masks; Smokeproof masks; Protective masks; Filters for dust, gas and welding masks; Gloves for protection against accidents; Protective clothing against chemicals and pharmaceuticals; Fireproof garments; Face-protection masks against accidents; Power distribution or control machines and apparatus; Telecommunication machines and apparatus; electronic apparatus, namely computer hardware and computer software for the control of washing, disinfecting and ventilation apparatus; Aseptic and dust-removing apparatus for experiment and research purposes; Apparatus for forming clean zones for experiment and research purposes. Sanitary masks for medical purpose; Surgical masks; Anaesthetic masks; Masks for prevention of hospital infection; Masks for medical personnel; Sprays for medical purpose; Medical apparatus and instruments. Washing and disinfection apparatus; Water ionizer with cleansing and disinfection effects for medical purpose; Washing and sterilization apparatus for endoscopes; Apparatus for forming clean zones for medical purpose.
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Aseptic and dust-removing apparatus for experiment and research purposes, namely, electronic apparatus for controlling the aseptic environment of clean rooms Aseptic and dust-removing apparatus for medical purposes, namely, air cleaners Apparatus for forming clean zones for manufacturing chemical products and semiconductors, namely, air cleaners; Blowers, namely, clean room installation air blowers
09 - Scientific and electric apparatus and instruments
10 - Medical apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Aseptic and dust-removing apparatus for experiment and research purposes, namely, electronic apparatus for controlling the aseptic environment of clean rooms Aseptic and dust-removing apparatus for medical purposes, namely, air cleaners Apparatus for forming clean zones for manufacturing chemical products and semiconductors, namely, air cleaners; Blowers, namely, clean room installation air blowers
There is provided a mask provided with a latch that can maintain a latched state of fastening cords and suppress offsetting when the mask is worn. A latch (10) of a mask (1) is in the form of an oblong thin sheet, and includes a first latching part (20) for disengageably latching one fastening cord (4) of the mask (1) and a second latching part (30) positioned on the second end edge (14) side of the first latching part (20), having an insertion through hole (31) for inserting the other fastening cord (3) of the mask (1) in advance . The first latching part (20) has a guide channel (21) extending from the first lateral edge (11) and a first latching hole (22) connected to the guide channel (21), and the second latching part (30) has a second latching hole (32) communicating with the insertion through hole (31), and having an outer shape mailer than that, and the first latching hole (22) and the second latching hole (32) are directed in directions opposed to one another in a lateral direction (X).
Provided is a mask provided with a latch that can maintain a latched state of a fastening cord and suppress offsetting when the mask is worn. A latch (10) for a mask (1) has a wide thin plate shape and includes a first latching part (20) for latchably and releasably latching one fastening cord (4) of the mask (1) and a second latching part (30) positioned on a second end edge (14) side of the first latching part (20) and having an insertion through hole (31) for inserting another fastening cord (3) of the mask (1) in advance. The first latching part (20) has a guide channel (21) extending from a first side edge (11) and a first latching hole (22) connected to the guide groove. The second latching part (30) has a second latching hole (32) connected to the insertion through hole (31) and having a smaller external form than the same. The first latching hole (22) and the second latching hole (32) are oriented in directions opposite to each other in the direction (X) of width.
F24F 1/0071 - Indoor units, e.g. fan coil units with means for purifying supplied air
F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
F24F 13/08 - Air-flow control members, e.g. louvres, grilles, flaps or guide plates
F24F 7/08 - Ventilation with ducting systems with forced air circulation, e.g. by fan with separate ducts for supplied and exhausted air
F24F 13/068 - Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
B08B 5/02 - Cleaning by the force of jets, e.g. blowing-out cavities
B08B 15/00 - Preventing escape of dirt or fumes from the area where they are producedCollecting or removing dirt or fumes from that area
Provided is a protective mask that is highly comfortable to wear. The protective mask (1) is provided with a face piece (11), an eye piece (15) attached to the face piece, and a lip (13) extending from the outer circumference (12) of the face piece in a direction transverse to the face piece. At least a portion of the lip includes a face contact portion (14) that can be in contact with the face of a wearer of the protective mask. The face contact portion is formed from a silicone rubber. The face piece and the lip are formed from a gas impermeable material except for the face contact portion. The gas impermeable material and the silicone rubber are joined together along the boundary between the impermeable material and the silicone rubber.
Provided is a voice transmitter in a simple structure that can be manufactured at a low cost, and can make speech uttered by a wearer clearly hearable at the outside. In a voice transmitter unit that transmits the speech uttered by the wearer to the outside, a voice transmitter body of the voice transmitter unit includes: a diaphragm member able to transmit the speech from one side to the other side; and a holding member to hold at least a part of the diaphragm member, wherein the diaphragm member is formed of a heat-shrinkable material, and the diaphragm member is heated to be shrunk while the diaphragm member is held by the holding member, thereby holding the diaphragm member by the holding member while substantially an entire surface of the diaphragm member is tensed.
The local air cleaning apparatus 1 causes a cleaned uniform air flow blown out from an air flow opening face 23 to collide with an air collision face W to flow outside an open region, so as to cause cleanliness to be higher inside a guide 3 and inside the open region than other regions. Additionally, the apparatus 1 includes at least one of a device for measuring pressures inside the guide 3 and inside a push hood 2, a device for measuring the cleanliness inside the guide 3 or of the open region, and a device for measuring a gap area between the guide 3 and the air collision face W, and, to ensure the cleanliness from a result of the measurement, controls such that a flow velocity of the cleaned uniform air flow blown out from the air flow opening face 23 can be decelerated or accelerated.
B08B 15/02 - Preventing escape of dirt or fumes from the area where they are producedCollecting or removing dirt or fumes from that area using chambers or hoods covering the area
F24F 7/06 - Ventilation with ducting systems with forced air circulation, e.g. by fan
F24F 1/0071 - Indoor units, e.g. fan coil units with means for purifying supplied air
A purified air discharge device includes a push hood (2) having an air flow discharge surface (23) discharging a uniform purified air flow. The push hood (2) is provided with a lateral air discharger (28) for creating a purified air flow that collides against a surrounding wall that is formed as the push hood (2) is installed and that is situated close along the circumferential direction of the air flow discharge surface (23) of the push hood (2).
F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
F24F 9/00 - Use of air currents for screening, e.g. air curtains
A respiratory protection device in which a plurality of filter units are provided. A respiratory protection device includes a plurality of filter units. Air flow paths that extend to the facepiece are provided in respective filter units. An inhalation port leading in the facepiece is provided at a portion where the air flow paths merge. The inhalation port can be temporarily closed by using an inspection valve included in the fit checker.
A respiratory protection device is provided that allows the wearers of a facepiece to smoothly have a conversation with each other. A respiratory protection device includes a facepiece. The protection device also includes a voice amplifier that includes a microphone and a speaker therein, a detection unit that directly or indirectly detects the inner pressure of the facepiece, a power source unit, and a control unit. The control unit controls so as to place the voice amplifier in an operational state or a non-operational state, based on a result of comparison of information from the detection unit with a determination reference in the control unit.
A local air cleaning apparatus (1) is provided with push hoods (2, 3) having an air flow opening face (23) for blowing out a cleaned uniform air flow and a pair of guides (4, 5) provided on sides of the push hoods (2, 3) having the air flow opening faces (23), the guides (4, 5) extending from the sides thereof having the air flow opening faces (23) toward downstream sides of the uniform air flows to form opening faces (41, 51) at downstream-side end portions of the guides. The push hoods (2, 3) are arranged such that the respective air flow opening faces (23) are opposed to each other. The opening faces (41, 51) of the guides (4, 5), are spaced apart from and opposed to each other to form an open region between the opening faces (41, 51) of the respective guides (4, 5). The cleaned uniform air flows blown out from the air flow opening faces (23) collide with each other in the open region to flow out of the open region so as to allow the insides of the guides (4, 5) and the inside of the open region to have higher cleanliness than other regions.
F24F 7/06 - Ventilation with ducting systems with forced air circulation, e.g. by fan
F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
F24F 9/00 - Use of air currents for screening, e.g. air curtains
[Problem] To provide a voice transmitter, which can be manufactured at low cost, has a simple structure, and is capable of causing speech sounds spoken by the wearer to be heard clearly on the outside. [Solution] In a voice transmission unit for transmitting speech sounds spoken by a wearer to the outside, the voice transmitter body of the voice transmission unit is provided with a film member capable of transmitting speech sounds from one side to the other side and a holding member for holding at least a portion of the film member. The film member is formed from a heat-shrinkable material and is configured so that the film member is held by the holding member with tension applied on substantially the entire surface of the film member by heating and shrinking the film member when the film member is held in the holding member.
A local air cleaner (1) is configured in such a manner that a uniform current of cleaned air discharged from an air current opening surface (23) and contacts an air contact surface (W) and flow to the outside of an open region, thereby maintaining the insides of a guide (3) and the open region at a cleanliness level higher than that of the remaining region. The local air cleaner (1) is provided with at least one of a device for measuring pressure within the guide (3) and pressure within a push hood (2), a device for measuring the level of cleanliness in the guide (3) or the open region, or a device for measuring the gap between the guide (3) and the air contact surface (W). In order to ensure the level of cleanliness, the local air cleaner (1) controls the flow speed of a uniform current of cleaned air discharged from the air current opening surface (23), the control being performed on the basis of the measurement result in such a manner that the flow speed can be accelerated or decelerated.
A local air cleaner (1) is configured in such a manner that a uniform current of cleaned air discharged from an air current opening surface (23) and contacts an air contact surface (W) and flow to the outside of an open region, thereby maintaining the insides of a guide (3) and the open region at a cleanliness level higher than that of the remaining region. The local air cleaner (1) is provided with at least one of a device for measuring pressure within the guide (3) and pressure within a push hood (2), a device for measuring the level of cleanliness in the guide (3) or the open region, or a device for measuring the gap between the guide (3) and the air contact surface (W). In order to ensure the level of cleanliness, the local air cleaner (1) controls the flow speed of a uniform current of cleaned air discharged from the air current opening surface (23), the control being performed on the basis of the measurement result in such a manner that the flow speed can be accelerated or decelerated.
F24F 5/00 - Air-conditioning systems or apparatus not covered by group or
F24F 11/74 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
F24F 3/163 - Clean air work stations, i.e. selected areas within a space to which filtered air is passed
B25H 1/20 - Work benchesPortable stands or supports for positioning portable tools or work to be operated on thereby with provision for shielding the work area
B25J 21/02 - Glove-boxes, i.e. chambers in which manipulations are performed by the human hands in gloves built into the chamber wallsGloves therefor
F24F 7/06 - Ventilation with ducting systems with forced air circulation, e.g. by fan
33.
AIR BLOWING DEVICE AND PROTECTIVE CLOTHING WITH AIR BLOWING DEVICE
Provided are: an air blowing device which does not require an air hose for connecting an air blower to protective clothing, thereby eliminating the possibility that such an air hose catches on a protrusion in a workplace and enabling the user to work efficiently; and protective clothing which is provided with the air blowing device. An air blowing device (1) for protective clothing (6), the air blowing device (1) including an air blowing section (2) which has an air blower (3) and also including a filter section (4) which incorporates a filter (5) and which is connected to the air blowing section (2), wherein the air blowing device (1) is characterized by being disposed at the portion of the protective clothing (6) which corresponds to the back of the wearer's neck.
A41D 13/00 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
A41D 13/002 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
A guided airflow generation device (4) draws in a portion of a uniform airflow flowing in a guide (3) and discharges the captured airflow toward the end of the guide (3), thereby generating an airflow oriented at an angle running from the direction perpendicular to the uniform airflow to the same direction as the uniform airflow. Thus, guided airflow generation device (4) guides the uniform airflow in the vicinity of the generated airflow, thereby changing the orientation of a portion of the uniform airflow.
The objective of the present invention is to provide protective clothing capable of allowing a wearer wearing the protective clothing to clearly hear external sounds, and that is capable of ensuring the work safety of the wearer. The protective clothing of the present invention comprises a protective clothing main body (1) for covering at least the head of a wearer; an ear membrane member (18) formed to a thickness that allows external sounds to be heard; and a maintenance member (11) for maintaining the ear membrane member in a state of contact with the ear of the wearer or in a state adjacent to the ear within a predetermined distance. An ear membrane member is provided, and the ear membrane member is maintained in a state of contact with the ear of the wearer or in a state adjacent to the ear within a predetermined distance, whereby the wearer is able to clearly hear external sounds.
A respirator that has a fit checker. This respirator (1) has a fit checker (4) for inspecting whether or not a face unit (2) being worn is airtight. Said fit checker (4) has an inspection valve (35) and a control lever (36) for opening and closing an air inlet in the face unit (2). Given a first direction extending from the outer surface of the face unit (2) toward the inner surface thereof and a second direction extending from the inner surface toward the outer surface, when the lever (36) is operated, the inspection valve (35) can move in at least the first direction to close the air inlet (47).
A respirator provided with a plurality of filter units. This respirator (1) has a plurality of filter units (3). An air channel (14) extending toward a face unit is formed in each filter unit (3). An air inlet that leads to the inside of the face unit is formed in the respirator (1) where the air channels (14) converge. An inspection valve (35) in a fit checker can be used to temporarily close the air inlet.
An air cleaning apparatus capable of predicting a breakthrough time of a filtering portion is provided. Regarding a mask 1 as one example of the air cleaning apparatus, data on concentration of the poisonous gas element with which in ambient air (40) is contaminated on the upstream side of a filtering portion (3), a flow rate of the air (40) passing through the filtering portion (3), a temperature of the air (40), and relative humidity of the air (40) are input to an arithmetic processing unit (25). A breakthrough-time prediction formula in which the concentration, the flow rate, the temperature, and the relative humidity are provided as variables is programmed in the arithmetic processing unit (25), and the breakthrough time of the filtering portion (3) is calculated through the prediction formula, based on the data on the concentration and the like.
Provided is an item of respiratory protective equipment allowing persons wearing face units to converse with minimal impairment. The respiratory protective equipment (1) has a face unit (10). The equipment (1) also has an amplification unit (40) incorporating a microphone and speaker, a detection unit for directly or indirectly detecting the pressure inside the face unit, a power source, and a controller. The controller places the amplification unit (40) in an operating state or a non-operating state on the basis of a result obtained by comparing information from the detection unit with an assessment reference in the controller.
This local air purification device (1) is provided with a push hood (2) having an airflow aperture surface (23) that discharges a purified uniform airflow. The push hood (2) is disposed in a manner so that the uniform airflow discharged from the airflow aperture surface (23) impinges on an air impingement surface (W) at the downstream side of the airflow aperture surface (23). The push hood (2) forms an open region between the air impingement surface (W) and the airflow aperture surface (23) of the push hood (2) by causing the airflow aperture surface (23) to face the air impingement surface (W) while being separated therefrom. The purified uniform airflow discharged from the airflow aperture surface (23) causes the inside of the open region to have a high level of cleanliness compared to other regions by means of impinging on the air impingement surface (W) and flowing out of the open region.
F24F 13/068 - Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
F24F 7/08 - Ventilation with ducting systems with forced air circulation, e.g. by fan with separate ducts for supplied and exhausted air
F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
F24F 13/08 - Air-flow control members, e.g. louvres, grilles, flaps or guide plates
F24F 1/00 - Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
The purified air discharge device comprises a push hood (2) comprising an air flow discharge surface (23) discharging a uniform purified air flow. The push hood (2) is provided with a lateral air discharger (28) for creating a purified air flow that collides against a surrounding wall that is formed as the push hood (2) is installed and that is situated close along the circumferential direction of the air flow discharge surface (23) of the push hood (2).
A purified air discharge device is provided with a push hood (2) which has an air flow discharge surface (23) for discharging a uniform flow of purified air. The push hood (2) is provided with a side air discharge section (28) which causes a flow of purified air to strike a peripheral wall which is formed when the push hood (2) is installed and which is located close to the peripheral edge of the air flow discharge surface (23) of the push hood (2).
1) with respect to the facepiece, and a diaphragm. The supply valve includes a cylindrical housing and a slider that is reciprocally slidable on the inner peripheral surface of the housing in an axial direction thereof. The housing includes a pilot valve seat urged toward a pilot valve on an outer side of the one end portion in the axial direction and a main valve seat on an inner side of an opposite end portion in the axial direction. The inflow port is formed between the one end portion and the opposite end portion. The slider includes the pilot valve contactable with the pilot valve seat and a main valve urged toward the main valve seat.
F16K 1/30 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces specially adapted for pressure containers
F16K 31/143 - Operating meansReleasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a piston
F16K 31/163 - Operating meansReleasing devices actuated by fluid with a mechanism, other than pulling- or pushing-rod, between fluid motor and closure member the fluid acting on a piston
A61M 16/00 - Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators Tracheal tubes
A local air purification device (1) is equipped with: a push hood (2) having an airflow opening surface (23) which discharges a purified uniform flow of air; and a guide (3), which is provided on the airflow opening surface (23) side of the push hood (2), and which extends from the airflow opening surface (23) side toward the downstream side of the uniform flow of air and forms an opening surface (31) at the downstream end. The push hood (2) is arranged such that the uniform flow of air discharged from the airflow opening surface (23) passes through the interior of the guide (3) and then collides with an air collision surface (W) downstream from the opening surface (31). With the guide (3) an open region is formed between the opening surface (31) and the air collision surface (W) by arranging the opening surface (31) at a distance from and facing the air collision surface (W). The purified uniform flow of air discharged from the airflow opening surface (23) collides with the air collision surface (W) and flows to the outside of the open region, and thus the interior of the guide (3) and the interior of the open region have higher purity than other regions.
A local air purification device (1) is equipped with: a push hood (2) having an airflow opening surface (23) which discharges a purified uniform flow of air; and a guide (3), which is provided on the airflow opening surface (23) side of the push hood (2), and which extends from the airflow opening surface (23) side toward the downstream side of the uniform flow of air and forms an opening surface (31) at the downstream end. The push hood (2) is arranged such that the uniform flow of air discharged from the airflow opening surface (23) passes through the interior of the guide (3) and then collides with an air collision surface (W) downstream from the opening surface (31). With the guide (3) an open region is formed between the opening surface (31) and the air collision surface (W) by arranging the opening surface (31) at a distance from and facing the air collision surface (W). The purified uniform flow of air discharged from the airflow opening surface (23) collides with the air collision surface (W) and flows to the outside of the open region, and thus the interior of the guide (3) and the interior of the open region have higher purity than other regions.
A local air purification device (1) is provided with: push hoods (2, 3) having air flow opening faces (23) for discharging purified uniform air flows; and a pair of guides (4, 5) forming opening faces (41, 51) at downstream end sections of the pair of guides (4, 5), the pair of guides (4, 5) being provided on the sides of the push hoods (2, 3) which face the air flow opening faces (23) and extending from the air flow opening face (23) sides toward the downstream sides of the uniform air flows. The push hoods (2, 3) are disposed in such a manner that the respective air flow opening faces (23) face each other. The opening faces (41, 51) of the guides (4, 5) are made to face each other at an interval to form an open region between the opening faces (41, 51) of the guides (4, 5). Purified uniform air flows which are discharged from the air flow opening faces (23) hit each other within the open region and flow to the outside of the open region, and this causes the inside of the guides (4, 5) and the inside of the open region to have a higher level of cleanliness than other regions.
A local air purification device (1) is provided with: push hoods (2, 3) having air flow opening faces (23) for discharging purified uniform air flows; and a pair of guides (4, 5) forming opening faces (41, 51) at downstream end sections of the pair of guides (4, 5), the pair of guides (4, 5) being provided on the sides of the push hoods (2, 3) which face the air flow opening faces (23) and extending from the air flow opening face (23) sides toward the downstream sides of the uniform air flows. The push hoods (2, 3) are disposed in such a manner that the respective air flow opening faces (23) face each other. The opening faces (41, 51) of the guides (4, 5) are made to face each other at an interval to form an open region between the opening faces (41, 51) of the guides (4, 5). Purified uniform air flows which are discharged from the air flow opening faces (23) hit each other within the open region and flow to the outside of the open region, and this causes the inside of the guides (4, 5) and the inside of the open region to have a higher level of cleanliness than other regions.
Provided is a local clean zone forming apparatus which has an excellent operability and can provide an excellent clean air space without restricting the installation location or the purpose of an operation. In the local clean zone forming apparatus, a pair of push hoods having air blowing surfaces between which an airflow alignment mechanism is formed to form uniform airflows, are disposed so that the uniform airflows discharged from the push hoods are opposite to and collide with each other in a positional relationship wherein the air blowing surfaces are parallel to each other, and the centers of the air blowing surfaces are not directly opposite to each other; and the uniform airflows are obliquely discharged at an angle with respect to the air blowing surfaces.
F24F 7/06 - Ventilation with ducting systems with forced air circulation, e.g. by fan
F24F 13/08 - Air-flow control members, e.g. louvres, grilles, flaps or guide plates
F24F 9/00 - Use of air currents for screening, e.g. air curtains
F24F 3/16 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filteringAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by sterilisationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by ozonisation
50.
AIR CLEANER AND METHOD FOR PREDICTING BREAKTHROUGH TIME FOR SAME
The present invention relates to an air cleaner capable of predicting the breakthrough time of a filtering unit. The air cleaner, for example a mask (1), inputs concentration data of toxic gas components included in air (40) upstream of the filtering unit (3), flux data of the air (40) passing through the filtering unit (3), temperature data of the air (40), and relative humidity data of the air (40) into an execution processing unit (25). The execution processing unit (25) is programmed with a formula for predicting the breakthrough time using the concentration, flux, temperature, and relative humidity as variables, and thus the breakthrough time of the filtering unit (3) is predicted from the prediction formula based on data such as concentration.
B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
An air blowing device adapted to be used in such a manner that at least two of the devices are horizontally and/or vertically aligned with each other, thereby to obtain a uniform flow of air in the downstream direction from device to device. An air-permeable front surface (11f) is formed to the blowing device (1) at the downstream side of a rectifier mechanism, and side surface sections (11a) which extend in the upstream direction of the device (1) are formed at both edges of the air-permeable front surface (11f ) . First ventilation holes (70a) are distributed at the air-permeable front surface (11f) , and second ventilation holes (70b) are distributed at the side surface sections (11a) .
Disclosed is an air blowing device that, when using the air blowing device arrayed horizontally and/or vertically, can obtain a uniform flow of air in the downstream direction from device to device. An air-permeable front surface (11f) is formed to the blowing device (1) at the downstream side of a rectifier mechanism, and side surface sections (11a) that extend in the upstream direction of the device (1) are formed at both edges of the air-permeable front surface (11f). First ventilation holes (70a) are distributed at the air-permeable front surface (11f), and second ventilation holes (70b) are distributed at the side surface sections (11a).
Provided is a supply valve (10) to be attached to a face piece, (2) that can take in and expel air and supply air quickly to a wearer of an air respirator. The supply valve (10) comprises an inlet (27) for medium-pressure air (S1), a supply opening (25) for supplying medium-pressure air (S1) to the face piece (2), and a diaphragm (11). The supply valve (10) also includes a cylindrical housing (21) and a sliding element (22) that can reciprocatingly slide along the inner circumferential surface of the housing (21) towards the shaft direction of the housing (21). The housing (21) has a pilot valve seat (40) that is impelled towards a pilot valve (55) and disposed on the outside of one end section in the shaft direction, a main valve seat (35) disposed on the inside of the opposite end section in the shaft direction, and the inlet (27) formed between the one end section and the opposite end section. The sliding element (22) has a pilot valve (55) which can make contact with the pilot valve seat (40) and a main valve (65) which is impelled towards the main valve seat (35).
A61M 16/20 - Valves specially adapted to medical respiratory devices
F16K 1/00 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
F16K 31/165 - Operating meansReleasing devices actuated by fluid with a mechanism, other than pulling- or pushing-rod, between fluid motor and closure member the fluid acting on a diaphragm
Provided is a local clean zone forming apparatus which has an excellent operability and can provide an excellent clean air space without restricting the installation location or the purpose of an operation. In the local clean zone forming apparatus, a pair of push hoods having air blowing surfaces between which an airflow alignment mechanism is formed to form uniform airflows, are disposed so that the uniform airflows discharged from the push hoods are opposite to and collide with each other in a positional relationship wherein the air blowing surfaces are parallel to each other, and the centers of the air blowing surfaces are not directly opposite to each other; and the uniform airflows are obliquely discharged at an angle with respect to the air blowing surfaces.
Provided is a local clean zone forming apparatus which has an excellent operability and can provide an excellent clean air space without restricting the installation location or the purpose of an operation. In the local clean zone forming apparatus, a pair of push hoods having air blowing surfaces between which an airflow alignment mechanism is formed to form uniform airflows, are disposed so that the uniform airflows discharged from the push hoods are opposite to and collide with each other in a positional relationship wherein the air blowing surfaces are parallel to each other, and the centers of the air blowing surfaces are not directly opposite to each other; and the uniform airflows are obliquely discharged at an angle with respect to the air blowing surfaces.
The present invention aims to provide a sheet of microfiber assembly having a high filtering performance suitable as an oil-mist filter. A sheet of microfiber assembly 2 comprises microfibers 1 each having a fiber diameter of 3,000 nm or less and is formed of a mixture of water-insoluble but alcohol-soluble acetalized polyvinyl alcohol resin and water-insoluble but alcohol-soluble fluorine resin.
D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
D01F 6/50 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyalcohols, polyacetals or polyketals
D04H 1/56 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
D01D 5/00 - Formation of filaments, threads, or the like
D04H 1/4382 - Stretched reticular film fibresComposite fibresMixed fibresUltrafine fibresFibres for artificial leather
57.
Antimicrobial composition, process for preparing the same, and utilization thereof
A highly antimicrobial composition having characteristics of a lactic acid polymer such as biodegradability is prepared by combining a lactic acid oligomer with a metal salt thereof.
A01N 37/02 - Saturated carboxylic acids or thio-analogues thereofDerivatives thereof
A01N 25/34 - Shaped forms, e.g. sheets, not provided for in any other group of this main group
A01P 1/00 - DisinfectantsAntimicrobial compounds or mixtures thereof
A61B 19/00 - Instruments, implements or accessories for surgery or diagnosis not covered by any of the groups A61B 1/00-A61B 18/00, e.g. for stereotaxis, sterile operation, luxation treatment, wound edge protectors(protective face masks A41D 13/11; surgeons' or patients' gowns or dresses A41D 13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M 1/00)
58.
SHEET-LIKE ASSEMBLY OF FIBERS HAVING SMALL DIAMETERS, METHOD FOR PRODUCING SAME, AND APPARATUS FOR PRODUCING SAME
Disclosed is a sheet-like assembly of fibers having small diameters, which can be used as a filter having an excellent ability to filter an oil mist. Specifically disclosed is a sheet-like assembly (2) of fibers (1) having small diameters, wherein each of the fibers (1) has a fiber diameter of 3,000 nm or less and comprises a mixture of a water-insoluble and alcohol-soluble acetalized polyvinyl alcohol resin and a water-insoluble and alcohol-soluble fluororesin.
D01F 6/50 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyalcohols, polyacetals or polyketals
D04H 1/42 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
D04H 1/56 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
D04H 3/16 - Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
59.
SHEET OF MICROFIBER ASSEMBLY, AND METHOD AND APPARATUS FOR MAKING THE SAME
The present invention aims to provide a sheet of microfiber assembly having a high filtering performance suitable as an oil-mist filter. A sheet of microfiber assembly 2 comprises microfibers 1 each having a fiber diameter of 3,000nm or less and is formed of a mixture of water-insoluble but alcohol-soluble acetalized polyvinyl alcohol resin and water-insoluble but alcohol-soluble fluorine resin.
D04H 1/728 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
B01D 39/08 - Filter cloth, i.e. woven, knitted or interlaced material
In a mask device with blower, a sensor for warning is disposed, which detects a movement position of an exhaust valve corresponding to the case where an internal pressure of a face body is lower than an outer atmospheric pressure at the time of inhaling air in a non-contact state and outputs a signal. A warning device operates in accordance with a signal that is output from the sensor for warning.
A mask device with a blower has an alarm sensor (15) for outputting a signal by detecting without contact a position (d2) of an exhaust valve (7) after its movement that corresponds to a reduction in the inner pressure of a surface body to a level lower than an external air pressure occurring in air intake. An alarm device is activated by the signal from the alarm sensor (15).
F16K 15/06 - Check valves with guided rigid valve members with guided stems
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
62.
TOXIC GAS EXPOSURE PREVENTING APPARATUS FOR DISSECTION PRACTICE ROOM
A toxic gas exposure preventing apparatus for dissection practice room that realizes not only attaining of satisfactory toxic gas exposure preventing effect without detriment to operating easiness but also employing of existing dissection tables as they are without the need to execute work, such as installing of ventilation duct. Each of multiple dissection tables installed in a dissection practice room is provided with, independently from the dissection table, push hood (1) equipped with uniform air stream out-blowing means and pull hood (2) equipped with suction emitting means so that at least portion of the uniform air stream flows in contact with the body donation laid on the dissection table and thereafter is sucked into the pull hood (2). The pull hood (2) has a built-in filter with toxic gas adsorbing capacity.
