阅读说明：本技术 一种可控透湿正压防护服系统 (Controllable moisture permeable positive pressure protective clothing system ) 是由 李鑫 李硕 于 2021-03-31 设计创作，主要内容包括：本发明提供一种可控透湿正压防护服系统,可以为穿戴人员在提供有效阻隔细菌、病毒、体液等感染防护的同时,还具备高效除湿排汗功能,提高穿戴人员的长期工作舒适性。防护服系统采用外部电动风机将洁净空气输送到正压头罩内部,防护服的上衣衣袖和裤子的裤腿部位采用具有透气功能的高透湿功能面料制备,形成防护服系统内部的低压区；进入正压头罩的洁净空气掺混着人体汗液挥发的水蒸气及人呼出的高湿度空气地从正压头罩内部的高压区向防护服系统内部的低压区可控地流动,气体主要从低压区的高透湿功能面料向外部大气环境中稳定泄露,防护服内部可以形成30-130Pa的微正压,可控透湿正压防护服系统以人体表面积计算的有效除湿能力大于9000g/(m～(2)*d)。(The invention provides a controllable moisture permeable positive pressure protective clothing system which can provide infection protection for a wearer by effectively blocking bacteria, viruses, body fluid and the like, has high-efficiency dehumidifying and sweat releasing functions and improves the long-term working comfort of the wearer. The protective clothing system adopts an external electric fan to convey clean air to the interior of the positive pressure hood, and the coat sleeves of the protective clothing and the trouser leg parts of the trousers are made of high moisture permeable functional fabric with a ventilation function to form a low-pressure area in the protective clothing system; the clean air entering the positive pressure hood is mixed with water vapor volatilized by human sweat and high-humidity air exhaled by people and controllably flows from a high-pressure area inside the positive pressure hood to a low-pressure area inside the protective suit system, the air is mainly stably leaked from the high-moisture-permeable functional fabric in the low-pressure area to the external atmospheric environment, micro-positive pressure of 30-130Pa can be formed inside the protective suit, and the controllable moisture-permeable positive pressure protective suit system has large effective dehumidification capacity calculated by the surface area of a human bodyAt 9000 g/(m) 2 *d)。)

1. The controllable moisture-permeable positive pressure protective clothing system is characterized in that the controllable moisture-permeable positive pressure protective clothing system adopts an external portable electric fan to filter clean air filtered by an air filter material (M1) with an inlet flow Q_inThe protective material is conveyed into the positive pressure hood through an air inlet hose, and the peripheral protective material of the positive pressure hood is prepared from a material which is nearly air-tight or air-tight, so that a relative high pressure area in the protective clothing system is formed; the partial parts of the coat and/or trousers of the protective suit body below the positive pressure hood are made of high moisture permeable functional fabric to form a relatively low pressure area inside the protective suit system; inside the protective clothing system, the clean air entering the positive pressure hood mixes with water vapor formed by volatilization of human sweat and high-humidity air exhaled by a person and flows controllably from a relatively high-pressure area inside the positive pressure hood to a relatively low-pressure area inside the protective clothing system, the gas inside the protective clothing system mainly leaks stably from a high-moisture-permeable functional fabric in the low-pressure area to the external atmospheric environment, and the leaked gas of the high-moisture-permeable functional fabric adopted in the low-pressure areaFlow rate Q_oNot less than 70% of inlet air flow rate Q_in(ii) a The low-pressure area is preferably designed and arranged at the shank part of the trousers of the protective clothing body and/or the sleeve part of the coat; the rest parts of the protective clothing body except the low-pressure area are made of nearly air-tight or air-tight fabrics; the air inlet flow of the positive pressure hood is controllably adjusted at 850L/min and 170-300 Pa, and micro positive pressure between 10-300Pa can be established inside the controllable moisture permeable positive pressure protective clothing system; the controllable moisture permeable positive pressure protective clothing system mainly comprises: the protective suit comprises a positive pressure hood with an air inlet joint, a jacket and/or trousers of a protective suit body below the positive pressure hood, and a portable electric fan component arranged outside the protective suit body, wherein the electric fan component mainly comprises an electric fan, an electric fan speed regulation controller, an air filter material at an air inlet side, a lithium ion battery pack and corresponding mounting structural members thereof; the positive pressure hood mainly comprises a polymer hard face screen, a peripheral protective fabric connected with the polymer hard face screen, an air inlet joint, a microporous breathable head liner which is prepared by carrying out hot pressing molding on main heat-pressed molding by using hot-forming cotton with functions of air inlet direct blowing to scalp and ventilation and perspiration, and is arranged in the positive pressure hood, the microporous breathable head liner is directly worn on the head of a wearer, the surface density of the microporous breathable head liner is 350-550 g/dm, and the moisture permeability is more than 5000g/m²D; an air inlet connector of the positive pressure hood is connected and fixed on the upper surface of the microporous breathable head lining by hot melt adhesive; the upper edge of the polymer hard face screen is connected and fixed with a plastic retainer fixed on the periphery of the microporous breathable head lining; the effective dehumidification capacity of the controllable moisture permeable positive pressure protective clothing system calculated by the surface area of the human body is more than 8000 g/(m)²*d)。

2. The controllable moisture-permeable positive pressure protective clothing system as claimed in claim 1, wherein the air inlet of the electric blower is made of a microporous material with low air resistance and high filtration efficiency, the air resistance (ρ 1) of the microporous material is 30-210Pa/(100 square centimeters by 85 liters per minute), the effective ventilation area of the air filtration material is 100-600 square centimeters, and the filtration efficiency of the air filtration material on 0.3 micron NaCl salt aerosol is greater than 98%; the length of the sleeve part of the coat of the protective coat body is 10-60 cm or the part with the area of (S2)A microporous composite fabric (M2) with high moisture permeability is adopted to prepare and form a low-pressure area (L2), and the air resistance rate (rho 2) of (M2) is between 500 and 1500Pa/(100 square centimeters and 85 liters per minute); the part with the length of 15-80 cm or the part with the area (S3) mainly at the lower leg part of the trousers of the protective clothing body adopts a microporous composite fabric (M3) with high moisture permeability to prepare and form a low-pressure area (L3), and the air resistance (rho 3) of the (M3) is 300-1500Pa/(100 square cm 85L/min); by controlling (ρ 2)/(S2) ≧ 1.3 (ρ 3)/(S3), achieving a smaller bleed gas flow rate from the low-pressure zone (L2) than the bleed gas flow rate from the low-pressure zone (L3); the part with the total area of the fabrics at the other parts except the low-pressure area of the protective clothing being (S4) is made of the nearly air-tight or air-tight fabric (M4), and the air resistance (rho 4) of (M4) is more than 1800Pa/(100 square centimeters by 85 liters per minute); (ρ 4)/(S4) ≥ 2 ≥ ρ ((ρ 2)/(S2) + (ρ 3)/(S3)); the air filter material (M1) adopted by the controllable moisture permeable positive pressure protective clothing system and the fabrics (M2), (M3) and (M4) adopted by the protective clothing body are continuously pressurized for 30 minutes under the positive pressure of 3.5KPa, and synthetic blood or pure water media can not permeate; the controllable moisture permeable positive pressure protective clothing system adopts a direct current electric fan with the power of 6-24w for air supply, the air inlet flow is controllably adjusted at 650L/min and 170-230 Pa, the interior of the protective clothing system can form micro positive pressure of 30-230Pa, and the effective dehumidification capacity of the controllable moisture permeable positive pressure protective clothing system calculated by the surface area of a human body is more than 10000 g/(m) of the controllable moisture permeable positive pressure protective clothing system²*d)。

Technical Field

The invention belongs to the field of protective clothing, in particular to the field of protective clothing with perspiration and dehumidification functions.

Background

High-grade protection is needed for medical care personnel exposed in the environment with infectivity or poisonous and harmful to personnel, airports and customs quarantine personnel, and although the traditional disposable protective clothing can provide certain barrier protection performance, the stuffiness feeling of the personnel after wearing is serious, the sweat volatilized by the wearing personnel can not be effectively discharged in time, and the heat dissipation and fighting capacity of the human body are seriously influenced. How to guarantee that the protective clothing can also have the function of effectively dehumidifying and perspiring while effectively blocking infection of bacteria, viruses, body fluid, blood and the like, and improve the long-term working comfort of the wearing personnel is still relatively deficient at present.

Disclosure of Invention

In order to improve the comfort level of people wearing the protective clothing for a long time and effectively volatilize sweat discharged by human body to the outside of the protective clothing in time and efficiently, the invention provides a positive pressure protective clothing system with controllable moisture permeability, which adopts the following technical scheme that an external portable electric fan is adopted to properly supply air flow Q to clean air filtered by an air filter material (M1) in the controllable moisture permeability positive pressure protective clothing system_inThe sweat can not be volatilized efficiently in time and discharged out of the body because the too small air inlet flow is not enough to reduce the humidity in the protective clothing; the power of the electric fan is required to be higher due to the excessive inflow, the capacity requirement on mobile energy is higher, the weight is correspondingly large, and the wearing experience of people is influenced; the peripheral protective material of the positive pressure hood is prepared by adopting a material which is nearly air-tight or air-tight to form a relative high pressure area inside the protective clothing system; the partial parts of the coat and/or trousers of the protective suit body below the positive pressure hood are made of high moisture permeable functional fabric to form a relatively low pressure area inside the protective suit system; inside the protective clothing system, the clean air entering the positive pressure hood mixes with water vapor formed by volatilization of human sweat and high-humidity air exhaled by a person and flows controllably from a relatively high-pressure area inside the positive pressure hood to a relatively low-pressure area inside the protective clothing system, the gas inside the protective clothing system mainly leaks stably from a high-moisture-permeable functional fabric in the low-pressure area to the external atmospheric environment, and the leakage gas flow Q of the high-moisture-permeable functional fabric adopted in the low-pressure area_oNot less than 70% of inlet air flow rate Q_in(ii) a More preferably 80% or more, which is more advantageous for the formation of a controlled flow of gas driven by a pressure difference inside the protective clothing system; the low-pressure area of the protective clothing system is preferably designed and arranged at the shank part of trousers of the protective clothing body and/or the sleeve part of the coat; the rest parts of the protective clothing body except the low-pressure area are made of nearly air-tight or air-tight fabrics; the air inlet flow of the positive pressure hood is controllably adjusted at 850L/min and 170-300 Pa, and micro positive pressure between 10-300Pa can be established inside the controllable moisture permeable positive pressure protective clothing system; the controllable moisture permeable positive pressure protective clothing system mainly comprises: withThe protective suit comprises a positive pressure hood of an air inlet joint, a jacket and/or trousers of a protective suit body below the positive pressure hood, and a portable electric fan component arranged outside the protective suit body, wherein the electric fan component mainly comprises an electric fan, an electric fan speed regulation controller, an air filter material at an air inlet side, a lithium ion battery pack and corresponding mounting structural members thereof; the positive pressure hood mainly comprises a polymer hard face screen, a peripheral protective fabric connected with the polymer hard face screen, an air inlet joint, a microporous breathable head liner which is prepared by carrying out hot pressing molding on main heat-pressed molding by using hot-forming cotton with functions of air inlet direct blowing to scalp and ventilation and perspiration, and is arranged in the positive pressure hood, the microporous breathable head liner is directly worn on the head of a wearer, the surface density of the microporous breathable head liner is 350-550 g/dm, and the moisture permeability is more than 5000g/m²D; an air inlet connector of the positive pressure hood is connected and fixed on the upper surface of the microporous breathable head lining by hot melt adhesive; the upper edge of the polymer hard face screen is connected and fixed with a plastic retainer fixed on the periphery of the microporous breathable head lining; the effective dehumidification capacity of the controllable moisture permeable positive pressure protective clothing system calculated by the surface area of the human body is more than 8000 g/(m)²*d)。

In order to realize the idea, the air inlet of the electric fan adopts a microporous material with low air resistance and high filtering efficiency, wherein the air resistivity (rho 1) is between 30 and 210Pa/(100 square centimeters by 85 liters per minute) as an air filtering material (M1), the effective ventilation area of the air filtering material is between 100 and 600 square centimeters, and the filtering efficiency of the air filtering material on NaCl salt aerosol with the particle size of 0.3 micrometer is more than 98 percent; the part with the length of 10-60 cm or the part with the area (S2) of the sleeve part of the coat of the protective suit body is prepared by adopting a microporous composite fabric (M2) with high moisture permeability to form a low-pressure area (L2), and the air resistance (rho 2) of the M2 is 500-1500Pa/(100 square cm 85L/min); the part with the length of 15-80 cm or the part with the area (S3) mainly at the lower leg part of the trousers of the protective clothing body adopts a microporous composite fabric (M3) with high moisture permeability to prepare and form a low-pressure area (L3), and the air resistance (rho 3) of the (M3) is 300-1500Pa/(100 square cm 85L/min); by controlling (ρ 2)/(S2) ≧ 1.3 (ρ 3)/(S3), achieving a smaller bleed gas flow rate from the low-pressure zone (L2) than the bleed gas flow rate from the low-pressure zone (L3); low pressure of protective clothingThe part with the total area of the fabrics outside the region being (S4) is made of nearly air-proof or air-proof fabrics (M4), and the air resistance (rho 4) of (M4) is more than 1800Pa/(100 square centimeter 85 liter/min); (ρ 4)/(S4) ≥ 2 ≥ ρ ((ρ 2)/(S2) + (ρ 3)/(S3)); the air filter material (M1) adopted by the controllable moisture permeable positive pressure protective clothing system and the fabrics (M2), (M3) and (M4) adopted by the protective clothing body are continuously pressurized for 30 minutes under the positive pressure of 3.5KPa, and synthetic blood or pure water media can not permeate; the controllable moisture permeable positive pressure protective clothing system adopts a direct current electric fan with the power of 6-24w for air supply, the air inlet flow is controllably adjusted at 650L/min and 170-230 Pa, the interior of the protective clothing system can form micro positive pressure of 30-230Pa, and the effective dehumidification capacity of the controllable moisture permeable positive pressure protective clothing system calculated by the surface area of a human body is more than 10000 g/(m) of the controllable moisture permeable positive pressure protective clothing system²*d)。

According to the basic technical idea of the invention, for the split protective clothing, the low-pressure area can be preferably arranged on the sleeves of the upper limbs and/or the part close to the waistline, the part providing effective gas leakage is prepared by using the microporous composite fabric (M2) with high moisture permeability, the other parts are prepared by using the nearly air-impermeable or air-impermeable fabric, the air is introduced from the positive pressure hood in the controllable moisture permeability protective clothing system, and the state of gas leakage is stabilized outwards from the microporous composite fabric with high moisture permeability in the low-pressure area.

Example (b):

a controllable moisture permeable positive pressure protective clothing system adopts an integrated protective clothing structure, a portable direct current electric fan is adopted to provide clean air, a microporous material which is formed by compounding low-air-resistance and high-filtration-efficiency 55-gram-weight PP melt-blown non-woven fabric and 25-gram-weight PP spun-bonded non-woven fabric with air resistivity (rho 1) of 130-180Pa/(100 square centimeters 85 liters/minute) is adopted as an air filter material (M1), the effective ventilation area of the air filter material is 200 square centimeters, and the filtration efficiency of NaCl salt aerosol of 0.3 micrometers is more than 99 percent; the length of the sleeve part of the coat of the protective suit body is 20 cm or the area of the sleeve part is (S2) ═ 2 × 800 square cm, a low-pressure area (L2) is prepared by adopting a microporous composite fabric (M2) with a high moisture permeability function, and the air resistivity (rho 2) of the M2 is 1000Pa/(100 square cm × 85L/min); of trousers with protective clothing bodyA part with the length of 30 cm or a part with the area of (S3) ═ 2 × 1800 square cm, which is mainly the lower leg part, a microporous composite fabric (M3) with a high moisture permeability function is adopted to prepare and form a low-pressure area (L3), and the air resistivity (rho 3) of the M3 is 700Pa/(100 square cm × 85L/min); by controlling the weighted resistance (ρ 2)/(S2) of the low-pressure zone (L2) to 0.625 and the weighted resistance (ρ 3)/(S3) of the low-pressure zone (L3) to 0.194, a much smaller bleed gas flow rate from the low-pressure zone (L2) than from the low-pressure zone (L3) is achieved; the part with the total area of the fabrics at the other parts except the low-pressure area of the protective clothing being (S4) is made of the airtight fabrics (M4); the air filter material (M1) adopted by the controllable moisture permeable positive pressure protective clothing system and the fabrics (M2), (M3) and (M4) adopted by the protective clothing body are continuously pressurized for 30 minutes under the positive pressure of 7KPa, and synthetic blood or pure water media can not permeate; the protective clothing system adopts a direct current electric fan with power of 18w for air supply, the air inlet flow is controllably adjusted at 650L/min and can form micro-positive pressure of 30-150Pa inside, and the effective dehumidification capacity of the controllable moisture permeable positive pressure protective clothing system calculated by the surface area of a human body is larger than 11000 g/(m/(m)²*d)。