99results about How to "Breathe comfortably" patented technology

The invention relates to a respirator, and discloses a breathing pressure fuzzy control type respirator and a breathing pressure fuzzy control method. The breathing pressure fuzzy control type respirator controls action of each part by means of actual control output of fuzzy piping and instruments diagram (PID) controller in a template embodiment, and each sensor collects signal variable of each part and transfers to the fuzzy PID controller to do fuzzy control operation. An air suction electromagnetic proportional valve is capable of controlling opening of a valve hole to continuously vary in a certain range according to corresponding control signal (voltage or current signal). The fuzzy PID controller is capable of controlling flow which enters back stage gas channel to continuously vary in a certain range through controlling opening of each valve and further controlling airway pressure. Breath becomes more comfortable and safer after patients using the respirator.

The invention discloses mint-scented compound essential oil and a feed additive containing mint-scented compound essential oil and production and application thereof, and relates to the technical field of feed nutrition and feed additive production. The mint-scented compound essential oil is prepared by using Asian mint oil, cineole, cinnamaldehyde, eugenol, carvacrol, menthol and thymol as raw materials, putting the above raw materials into an enamel reaction kettle or a stainless steel reaction kettle sequentially, and evenly stirring and mixing the above raw materials. Preparation method 1:stirring and mixing the compound essential oil and anhydrous alcohol or propylene glycol in the stainless steel reaction kettle according to a weight ratio, with the addition of polyoxyethylene castor oil emulsifiers, thereby obtaining a feed additive containing liquid mint-scented compound essential oil. Preparation method 2: stirring and mixing the compound essential oil and dry starch in a high-speed mixer according to a weight ratio, thereby obtaining a feed additive containing solid mint-scented compound essential oil. Preparation method 3: stirring and mixing the compound essential oiland beta-cyclodextrin or soluble starch in the high-speed mixer according to a weight ratio, with the addition of Tween-80 emulsifiers, thereby obtaining a feed additive containing water-soluble mint-scented compound essential oil.

The invention provides a chemical oxygen self-rescuer with diversion enhancement heat-transfer and cooling performances. The chemical oxygen self-rescuer comprises a breathing hose, an air bag, an oxygen generator, an upper shell and a lower shell and is characterized in that the oxygen generator is arranged in the lower shell, and a phase-change cooling-material cooling layer is arranged between the outer wall of the oxygen generator and the lower shell; a porous exhaling catheter is arranged on a vertical center shaft of the oxygen generator, and an upper-layer filtering baffle plate and a lower-layer filtering baffle plate are respectively arranged on the planes on which the upper catheter mouth and the lower catheter mouth of the porous exhaling catheter; the porous exhaling catheter is connected with the outer wall of the oxygen generator through a vertical support shunt heat-conducting plate. The oxygen generator with a diversion enhancement heat-transfer technology and the phase-change material melting decalescence cooling layer are adopted. The chemical oxygen self-rescuer has the advantages that the suction temperature and the temperature of the handheld surface of a product are low, the oxygen generating efficiency is high, and meanwhile the air tightness is conveniently inspected.

The invention provides a haze-proof mask, which relates to the technical field of dust prevention. The haze-proof mask comprises a mask body, wherein the two ends of the mask body are connected with ear buckling belts, the ear buckling belts are elastic bands with certain extending lengths, and a region, in contact with the face, of the inner surface of the mask body is provided with a pad body made of soft materials, so a pasting region is formed. The pad body has a certain radian, is designed according to the face shape characteristics of the human body, and can be tightly pasted on the mouth and nose part, the pasting position of the pad boy and the face part is subjected to thickness design according to the face characteristics, the regions positioned at the two sides of the naris are thicker and can be tightly pasted on the face, a region, pasted with the noise, of the inner surface of the mask body is provided with a support frame, and a filtering air bag is detachably arranged on the support frame and is used for filtering the gas. The haze-proof mask has the advantages that the traditional mask structure is changed, during the wearing, a three-dimensional effect is formed in the face part of the human body, the pasting is tight, the smooth breath can be ensured, users feel comfortable, and the haze-proof effect is good.

The invention provides an efficient oxygen-generation and air stagnation prevention chemical oxygen fire-fighting self-rescue respirator with a cooling layer. The chemical oxygen fire-fighting self-rescue respirator comprises a mask (1), a breathing cover (2), an oxygen-generation tank (3) and an airbag (6), and is characterized in that the breathing cover is arranged on the mask and is connected with an opening of the airbag; an expiration one-way valve and an inspiration one-way valve are arranged at the connecting position of the breathing cover and the airbag; the oxygen-generation tank is arranged in the airbag, and an air inlet in the top of the oxygen-generation tank is connected with the breathing cover through the expiration one-way valve; meanwhile an air guide tube is connected with an air outlet in the bottom of the oxygen-generation tank. According to the self-rescue respirator, the oxygen-generation tank is arranged in the airbag, the airbag is effectively prevented from being wrinkled or adhered, and the air stagnation phenomenon is completely eradicated; a flow channel subdivision staggered fin type cooling structure is adopted in the oxygen-generation tank, the problem that the reaction in a medicament layer is uneven and the cooling problem are effectively solved, and meanwhile the temperature of generated oxygen is effectively lowered through the arrangement of a supporting heat conduction separation plate, a heat isolation layer and the air guide tube.

The invention relates to the technical field of masks, in particular to a three-dimensional dustproof filtering mask. The three-dimensional dustproof filtering mask comprises a mask body used for covering the mouth and the nose, the mask body is symmetrically divided into a first covering part and a second covering part by a longitudinal folding line in the middle of the mask body. One end of the first covering part and one end of the second covering part are respectively connected with an ear fastening belt. The ear fastening belts are elastic belts with a certain stretched length. The upper end of the longitudinal folding line, located at the joint of the first covering part and the second covering part, extends upwards to form a nose protection part having a certain camber and being capable of being attached to the nose. The nose protection part is designed based on the camber of the nose with the outside protruding outwards and an attaching groove capable of being attached to the nose formed inside. The lower end of the longitudinal folding line, located at the joint of the first covering part and the second covering part, extends downwards to form an attaching part having a certain camber and being capable of being attached to the lower jaw. A three-dimensional area allowing people to breathe freely is formed between the nose protection part and the attaching part. When a user wears the three-dimensional dustproof filtering mask, a three-dimensional effect is achieved on the face, and the mask is closely attached to the face. In addition, free breathing is guaranteed and the user feels comfortable.

The invention discloses a household indoor multifunctional air purifier. The household indoor multifunctional air purifier comprises an upper air purification chamber and a lower air purification chamber, wherein the upper air purification chamber is provided with an air inlet; a filtering assembly is arranged at the air inlet; a mute suction ventilator is arranged on the rear part of the filtering assembly; a hole is formed in the lower part of the upper air purification chamber and the upper air purification chamber is communicated with the lower air purification chamber by the hole; the lower air purification chamber is provided with air treatment equipment; an air outlet is formed in the lower air purification chamber. The household indoor multifunctional air purifier has a wide application prospect in pollution management of indoor various air media; an oxygen generation device is additionally arranged so that old people, children and pregnant women feel very comfortable when breathing maritime similar air beside the purifier, in the aspect of improving the indoor air quality, particularly under the condition that indoor air is not circulated in winter; the purification technology realizes the aim that the requirements on living conditions by people are high are met.

The invention discloses a negative oxygen ion air exchanger with screen dust removal. The air exchanger comprises a stand, a machine box and a circuit control system, wherein the machine box is hung in the stand through a hanging rod; two or three inclined screens are fixed in the machine box; an eccentric shaft which transversely penetrates the machine box is arranged in the waist middle of the machine box; through rotation of the eccentric shaft, the machine box is synchronously vibrated; a belt wheel is arranged at one end of the eccentric shaft; a motor is fixed above the stand; and the eccentric shaft is synchronously rotated through operation of the motor. The negative oxygen ion air exchanger disclosed by the invention is wide in application range and high in dust removal efficiency; and after dust is removed through the two or three screens, fog-like water vapor is sprayed on the space of the last screen, and negative ions generated from friction and vibration are combined with the water vapor to form negative oxygen ions which are air vitamins and can make users feel comfortable to breathe, thereby achieving the purposes of preserving health and prolonging life.

The invention provides a chemical oxygen fire protection self-rescue respirator capable of achieving heat dissipation and cooling easily. The chemical oxygen fire protection self-rescue respirator comprises a mask 1, a respirator cover 2, an airbag 3 and an oxygen generator 4. In the using process, gas (carbon dioxide and water vapor) breathed out from a human body enters the oxygen generator 4 through an exhaling one-way valve of the respirator cover 2 and is reacted with an oxygen generating agent 5, generated oxygen enters the airbag 3 downwards, and the generated oxygen enters the respirator cover through the exhaling one-way valve of the respirator cover 2 after circulation cooling to allow the human body to breathe. The problems that an oxygen generator of a traditional chemical oxygen fire protection self-rescue respirator is placed in the airbag, hence, heat dissipation can not be achieved easily, and the breathing temperature is high; the airbag-shaped structure of the self-rescue respirator can cause gas short circuit easily, and high-temperature oxygen generated by the oxygen generator can be directly breathed in by the human body are solved. An isolating type gas defense and smoke prevention oxygen self-generation respirator which is capable of achieving heat dissipation and cooling easily, low in breathing temperature and smooth in breathing is provided.

The invention discloses a mask and a processing technology thereof, and relates to the technical field of mask processing. The mask comprises a mask body and ear bands, the mask body comprises an inner non-woven fabric layer, a filtering layer and an outer non-woven fabric layer which are arranged in sequence, one side, deviating from the filtering layer, of the inner non-woven fabric layer is a skin opposite surface, one side, deviating from the filtering layer, of the outer non-woven fabric layer is a skin back surface, the mask body is provided with a first pleated part, a second pleated part, a third pleated part and a fourth pleated part in the width direction, the mask body is bent into a structure with an omega-shaped cross section at the second pleated part and the third pleated part, the processing technology comprises the steps that the inner non-woven fabric layer, the filtering layer and the outer non-woven fabric layer are stacked into a semi-finished product, the side edges of the semi-finished product are hot-pressed, the ear bands are welded, a nose bridge strip is fixed, the upper edge and the lower edge of the mask body are hot-pressed, and a silicone sheet is bonded. The mask has good ductility and can better wrap the face of a wearer, and an excellent protection effect is achieved.

The invention relates to a safety helmet with a protective mask for mining. The safety helmet comprises a helmet body, an illuminating lamp is connected to the top of the helmet body through a hinge,and a foam protecting layer is fixedly connected to an inner cavity of the helmet body; a storage battery is installed between the foam protecting layer and the helmet body, and the storage battery isconnected with the illuminating lamp through a wire. The safety helmet is simple in structure and convenient to use, can buffer impact force of the helmet body to protect a wearer from being damagedwhen the helmet body is impacted by external force, can achieve clear voice communication between other various workers, can better improve working efficiency conveniently, can automatically supply air to the inside of the mask and exhaust air, reduces resistance when the wearer breathes, protects body health of workers, and can glow in a darker environment so that people can see the workers in the distance, security accidents such as accidental collision and the like can be avoided, and the personal safety of the wearer can be protected.

An anti-haze and oxygen-adding mask is used for improving human breath quality and is characterized by comprising a mask cup, an oxygen adding pipe, a mask support, sealing rubber, an oxygen adding pipe connector and the like, the mask cup comprises a mask face and a mask frame, the mask face is used for filtering air containing haze, one-way rubber is arranged below the mask face, and the oxygen adding pipe connector is used for connecting oxygen enrichment gas. The anti-haze and oxygen-adding mask has the advantages that the mask frame is arranged to be semi-sphere-shaped to enlarge a filtering face, an one-way air hole is formed in the lower middle portion of the mask face, the one-way rubber is arranged outside the one-way air hole to relieve breath resistance, the mask face is sealed through the adoption of sealing gum of the mask support to separate the air containing the haze, a frame groove of a sealing gum frame is connected with the mask cup in a buckled mode, therefore the mask face is more convenient to clean and detach, and the oxygen adding pipe is used for providing the oxygen enrichment gas to a user, so that the user can breathe more smoothly and comfortably.

The invention is a sleep aid, and more particularly an inflatable sleep aid utilizing a series of c-shaped inflatable bladders joined in series to such that the height of the sleep aid is adjustable and forming a generally c-shaped channel to allow the user to comfortably breath.

The invention discloses a method, a device and a respirator for voltage stabilization of continuous positive pressure ventilation. The method comprises the following steps: receiving a flow rate of a respirable gas in a pressurized flow, which is measured by a flow sensor, according to a preset time interval; ensuring a second derivative of the flow rate of a preset time point; acquiring an average flow rate, air leakage, an inspiration tidal volume and inspiration time; judging whether the average flow rate is greater than the air leakage; if so, determining a gain value to be a product of a value of a quotient of the inspiration tidal volume divided by the inspiration time minus the air leakage and a first coefficient; if not, determining the gain value to be a product of a value of a quotient of the inspiration tidal volume divided by the inspiration time minus the air leakage and a second coefficient, wherein the first coefficient is greater than the second coefficient; determining a respiration vector which is a product of the gain value and the second derivative; and controlling a driving signal of a baseline configuration pressure generator on the basis of the respiration vector and a pressure generator. The method foresees a flow rate variation trend through the respiration vector, controls the flow rate of the current time point, and guarantees stable output pressure of the respirator.

The present invention is a compact and portable personal ultraviolet air irradiation system having an ultraviolet air irradiation unit, a breathing tube, and a face mask. Unfiltered air passes through the ultraviolet air irradiation unit and is purified to ensure biological material has been neutralized by utilizing UV LEDs in the germicidal wavelengths of 100-280 nm. The ultraviolet air irradiation unit may further purify air of air particulates, gases, vapors, and biological material by utilizing a HEPA filter. The ultraviolet air irradiation unit may provide variable pressure to the mask to meet the breathing demands of the user. Flow through the ultraviolet irradiation unit may be reversible to irradiate the exhalations of a user who may be infected with a virus or other disease spread through exhalations.

The invention discloses an electromagnetic wave shielding nanometer fragrant brightener capable of releasing trace element negative ions, belonging to the technical field of the preparation and production of small chemical products for the surface wiping treatment of furniture, vehicles and the like. At present, in order to meet the demand of realizing modernization development, Chinese fine chemical products and small chemical products are necessary to have high-technology and new functions, multiple effects and no pollution, is low-carbon, safe and sanitary, is harmless to human and livestock, and can especially and effectively improve the quality of the living or working environment, improve and increase the health of people, prevent the damages of harmful materials such as electromagnetic wave, heavy metal lead, mercury and arsenic and increase the concentration of negative ions in the living or working environment. The key points of the invention are as follows: medical stone which has rich trace elements and good release property and can strongly treat water pollution and adsorb toxic substances and natural tourmaline which can continuously and spontaneously generate negative ions, are added in the new formula, and the modern high-technology nanometer treatment technology is adopted to prepare the brightener and enhance the health of human bodies.

The invention discloses a haze protection cap. The haze protection cap comprises a cap body, a cylindrical mask, a transparent viewing window and a waterproof pocket, wherein the cap body comprises a cap crown and a cap brim; the periphery of the cap brim is connected with the cylindrical mask by utilizing a zipper; the transparent viewing window is positioned at the position, close to the cap brim, at the top of the cylindrical mask; the waterproof pocket is arranged at the lower part of the transparent viewing window; soaked water absorption sponge is arranged in the waterproof pocket. The haze protection cap is simple and practical in structure, good in protection effect and capable of completely protecting parts such as the eyes, the ears, the respiratory tract, the skin and the hair of a wearer.

The invention discloses a filtering mask. The filtering mask comprises a mask body and ear hangers, wherein a soft washer is fixed to the edge of the mask body, and a first filter and a second filter are arranged on the inner side and the outer side of the mask body respectively; the first filter comprises a first non-woven fabric layer, a first PM2.5 filter screen layer, a first silver woven mesh layer, a spice layer, a second silver woven mesh layer, a second PM2.5 filter screen layer and a second non-woven fabric layer which are fixed in sequence; a plurality of air holes are formed in the spice layer, and the first silver woven mesh layer and the second silver woven mesh layer are each provided with a plurality of honeycomb holes which correspond to the air holes; the second filter comprises an aerogel plate, a first bamboo fiber fabric and a second bamboo fiber fabric, and the first bamboo fiber fabric and the second bamboo fiber fabric are fixed to the front side and the back side of the aerogel plate respectively; the outer side of the first filter and the outer side of the second filter are both fixed to the mask body through hidden buttons; the first filter and the second filter are each in a bowl shape, so that a bowl-shaped groove is formed in the inner side of the filtering mask; the soft washer is located at the edge of the bowl-shaped groove. The filtering mask is quite easy and convenient to disassemble and assemble and has a very good filtering effect.

The invention discloses totally-enclosed disposable medical protective clothing and an application method thereof. The totally-enclosed disposable medical protective clothing comprises: protective clothing of an integrated structure; and a hood, wherein a transparent mask is arranged on one side, matched with the face, of the hood; the protective clothing and the hood are detachably connected intoan integrated structure; the hood is of a three-dimensional structure in space through a supporting member arranged in the hood; and the supporting member is configured to be prepared from a glass fiber rod. According to the totally-enclosed disposable medical protective clothing and the application method thereof, the mask can be directly arranged on the hood, so compared with the prior art, thetotally-enclosed disposable medical protective clothing is better in sealing performance; in virtue of detachable connection of the hood and the protective clothing, the wearing process of the totally-enclosed disposable medical protective clothing is simpler; and meanwhile, the supporting member is arranged in the hood to support the hood, so the head of a wearer does not bear weight, the internal space of the hood is large, the head of the wear can move flexibly, and the domination degree of the wearer to the body is not affected.

The invention discloses an air purifier with a humidifying function. The air purifier includes a machine body, the machine body comprises a shell, a filter, a bracket, an ultraviolet lamp, a compositebasic photocatalyst board, a water tank connection part, and a water tank. The air purifier filters and sterilizes indoor air to purify the indoor air, and at the same time, appropriate moisture is released into a room, not only is the indoor air purified, but also a certain humidity can be maintained; a comfortable and clean indoor environment can be provided; especially one device can run bothfunctions at the same time, and the efficiency of the device is improved; the shell is in a flat-rectangular-tube shape, and one of the strengths of the air purifier is that installation cannot be limited even in a narrow installation space; and in addition, the air purifier is provided with a portable mobile communication device such as a telephone and a Bluetooth audio capable of being operatedin a short-distance wireless communication mode, and additional audio equipment to play music is not required.

The invention provides a breathing assistance mask. A mask is provided that incorporates an air chamber, a filter, an inhalation fan, an exhalation fan, a sensor and a controller. The inhalation fan draws air through the filter and into the mask. The exhalation fan exhausts the exhaled air. The controller continuously runs the inhalation and exhalation fans when the mask is being worn. The controller provides a first and second rotation speed for the fans, wherein the first rotation speed is non-zero and is lower than the second rotation speed. During inhalation, the exhalation fan runs at thefirst inhalation speed and the inhalation fan runs at the second inhalation speed. During exhalation, the inhalation fan runs at the first inhalation speed and the exhalation fan runs at the second inhalation speed. The control of the inhalation and exhalation fans ensures that the air flow in the mask is synchronized with the breathing of the user, ultimately making breathing more comfortable inthe mask.

The invention discloses a high-strength anti-drop charger. The charger comprises an anti-drop protection shell, a charger body, an air outlet and a refrigeration chamber. The top of the anti-drop protection shell is provided with a miniature solar cell panel. One end of the miniature solar cell panel is provided with a temperature controller. The other end of the miniature solar cell panel is provided with a purifying lamp. A hollow interlayer is arranged in the anti-drop protection shell. One side of the anti-drop protection shell is provided with an air outlet. The air outlet is provided with an exhaust fan through an installation seat. The lower end of the air outlet is provided with a storage battery. The storage battery is electrically connected to the miniature solar cell panel. Theother side of the anti-drop protection shell is provided with a refrigeration chamber. One side of the refrigeration chamber is provided with a semiconductor refrigeration sheet. The semiconductor refrigeration sheet is electrically connected to the temperature controller. The refrigeration end of the semiconductor refrigeration sheet is located in the refrigeration chamber. The charger has many functions, operation is simple, production is convenient, anti-drop and heat dissipation functions are effectively increased, and the charger is suitable for wide popularization.

The invention discloses a nose breathing filtration cover. The problems that an existing nose filtration device is small in superficial area and large in resistance are solved. The nose breathing filtration cover comprises a main part having the placement, supporting and sealing effect and a filtering net installed on the main part. A blank between a mask and a nasal cavity filter is filled through the nose breathing filtration cover. The nose breathing filtration cover has the beneficial effects of high filtration efficiency of the mask and tight sealing of the nasal cavity filter, and a user feels comfortable and the nose breathing filtration cover is attractive during dressing.

The invention discloses a multifunctional non-invasive ventilator mask, and relates to the field of medical equipment. The mask comprises a mask shell. The back end surface of a mask ring is providedwith a pressure-sore-proof sealing device, and the front side of the mask shell is provided with an oral sealing care device. The pressure-sore-proof sealing device comprises two annular elastic air tubes; each mounting groove is provided with an elastic air tube in a matching mode, the right side of each elastic air tube is communicated with an air outlet tube, and the left side of each elastic air tube is communicated with an air inlet branch. The oral sealing care device comprises a sealing tube. The rear part of the sealing tube is cylindrical, and the front part is elliptical. The front part of the mask shell is provided with an insertion hole, the rear part of the sealing tube is in insertion sealing connection with the insertion hole, and a front port of the sealing tube is in insertion fit with a sealing cover. The mask has the advantages of utilizing the modes of bonding position change and heat conduction and cooling to prevent pressure sores, and achieving stable pressurizing and air supply during oral care.

The present invention is a compact and portable personal ultraviolet air irradiation system having an ultraviolet air irradiation unit, a breathing tube, and a face mask. Unfiltered air passes through the ultraviolet air irradiation unit and is purified to ensure biological material has been neutralized by utilizing UV LEDs in the germicidal wavelengths of 100-280 nm. The ultraviolet air irradiation unit may further purify air of air particulates, gases, vapors, and biological material by utilizing a HEPA filter. The ultraviolet air irradiation unit may provide variable pressure to the mask to meet the breathing demands of the user. Flow through the ultraviolet irradiation unit may be reversible to irradiate the exhalations of a user who may be infected with a virus or other disease spread through exhalations.

The invention discloses a baby carriage with a traditional Chinese medicine healthcare function by combining coiled pipes and filter balls. A carriage cover is composed of a top plate, a bottom plate and a cavity. A filter coiled pipe, an absorption coiled pipe, guide rails, a drawer, a heating element and a wet tissue are mounted in the cavity, the guide rails are fixed to the half left part of the bottom plate through screws, the drawer is arranged in the guide rails, the heating element and the wet tissue are mounted in the drawer, the wet tissue contains traditional Chinese medicine healthcare liquid, and the filter coiled pipe is arranged on the wet tissue, and one end of the absorption coiled pipe is connected with the filter coiled pipe. The baby carriage can conduct antiviral sterilization and filtering on the fresh air breathed by a baby, and can ensure that the fresh air is sufficient and the baby can breathe smoothly and naturally.

The invention provides a portable air filter for noses and relates to health protection articles. The portable air filter is provided with a frame, a left filter piece and a right filter piece; the frame is formed by use of a plastic metal wire; an omega-shaped nose clip extending forwards and horizontally is arranged in the middle of the frame, and adjusting rings extending vertically and outwards are arranged on the left and right sides of the frame, respectively; the left and right filter pieces are detachably mounted on the corresponding adjusting rings of the frame, respectively; a middle point of each adjusting ring is welded and fixed with a corresponding end of the nose clip; upper and lower half parts of each adjusting rings are bent into a first open ring and a second open ring in a C-shape, respectively, and a free end of each open ring is welded with a lantern ring sleeving the other open ring; an arc line of a section from the free end of the first open ring to a portion thereof that a corresponding sleeve sleeves is coincident with an arc line of a section from the free end of the second open ring to a portion thereof that a corresponding sleeve sleeves. The portable air filter for noses is simple in structure, good in adjustability, high in universality, convenient to use, good in effect, and comfortable and reliable to wear.

The invention relates to an electric drive-free cooling and dehumidifying device for a refuge cabin, which belongs to the technical field of life saving apparatuses. The electric drive-free cooling and dehumidifying device for the refuge cabin is characterized by comprising a liquid CO2 gas bottle, a temperature control device and a dehumidifying and purifying device, wherein the temperature control device consists of a gas pressure regulation mechanism, a pneumatic motor and a cooling mechanism; the liquid CO2 gas bottle is connected with the gas pressure regulation mechanism; the gas pressure regulation mechanism is communicated with the pneumatic motor; the pneumatic motor is communicated with the cooling mechanism; and the cooling mechanism is connected with the dehumidifying and purifying device. The device has the advantages of ensuring the normal breathing and metabolism of human bodies, avoiding the secondary damage of harmful gases to refugees and simultaneously realizing filtration, cooling and dehumidifying functions by using a set of mechanism, along with high degree of integration, high refuge cabin reliability and safety, and the like.

The invention discloses a lag-free oxygen supply breathing machine system, which comprises a breathing mask, an inspiration pipe, an expiration pipe, an oxygen supply chamber, an auxiliary oxygen supply pipeline and a start-stop cylinder used for opening and closing the auxiliary oxygen supply pipeline, and the breathing mask is communicated with the oxygen supply chamber through the inspiration pipe and the auxiliary oxygen supply pipeline. the breathing mask is communicated to outside, the auxiliary oxygen supply pipeline is arranged, a small amount of oxygen is supplied at the later half stage of expiration, and the oxygen amount needed by a user within the time when the respirator induces the inspiration airflow lagging time is made up; the situation that a user needs to supply oxygen for inspiration lags, and inspiration is difficult is avoided, better breathing experience is provided for the user, starting and stopping of the auxiliary oxygen supply pipeline are controlled through airflow of the expiration pipe, control is easy and convenient, expiration is smoother, the temperature of oxygen provided by the auxiliary oxygen supply pipeline is adjustable, and breathing is more comfortable.

The present invention relates to a multifunctional nose mask, and the nose mask having an opening for the mouth and covering only the nose and the area around the nose, comprises at least two inner filters connected to a nose mask body, wherein: the nose mask can also be used as a facial mask by using detachable adhesive portions provided in the inner filters or by downwardly extending the inner filters; and gaps or the like beneath the eyes can be removed by the inner filters connected from the upper end of the nose mask body.