A positive pressure refrigeration fresh air system that can be used with a variety of protective clothing

Abstract

The present invention discloses a positive-pressure refrigerating fresh air system that can be used in conjunction with a variety of protective clothing, including an air supply device, a filtering device, and an air supply device. The air supply device includes an air supply body and a blower, a refrigerating machine, a power supply group, and a control board respectively arranged inside the air supply body. An air duct provided at one end of the air supply body is connected to the air inlet of the blower, the air outlet of the blower is connected to the air inlet of the refrigerating machine, the air outlet of the refrigerating machine is connected to the air duct provided at the other end of the air supply body, and the heat dissipation outlet of the refrigerating machine is arranged outside the air supply body. The blower and the refrigerating machine are powered by the power supply group, and the power supply group is externally connected with a charging interface on the air supply body. The control board controls and adjusts the operation of the blower and the refrigerating machine. Compared with the prior art, the present invention not only satisfies the good ventilation inside the protective clothing, but also can adjust the temperature inside the protective clothing by refrigeration when the room temperature is relatively high, enabling medical staff to always keep their skin dry during work and improving comfort.

Description

Technical Field

[0001] The present invention relates to the technical field of medical protection, and particularly to a positive pressure refrigeration fresh air system that can be used in combination with a variety of protective clothing. Background Art

[0002] After the occurrence of the "COVID-19" epidemic, medical staff must wear protective clothing when going deep into the clinical front line for treatment. However, the existing wearable protective clothing lacks a ventilation device, is airtight and airtight, and is very stuffy after being worn. After working for several hours, medical staff are sweating profusely, drenched all over, thirsty, weak in the legs, and extremely painful. After leaving the isolation area and taking off the protective clothing, the clothes worn next to the skin are already soaked. Medical staff feel as if they are being cooked inside, sweating profusely every day, and have been persevering for the epidemic. Working for a long time not only causes great harm to their physical health, affects work efficiency, and increases the chance of infection; if it happens to be a relatively hot day, the above situation will be even worse; in addition, medical staff wear masks for a long time, which is likely to cause poor ventilation of the knee pads, and the goggles worn are prone to fogging, which brings inconvenience to the work of medical staff. Summary of the Invention

[0003] To solve the above technical problems, the purpose of the present invention is to provide a positive pressure refrigeration fresh air system that can be used in combination with a variety of protective clothing, which not only satisfies the good ventilation inside the protective clothing, but also can adjust the temperature inside the protective clothing by refrigeration when the room temperature is relatively high, so that medical staff always keep their skin dry during work and improve comfort.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a positive pressure refrigeration fresh air system that can be used in combination with a variety of protective clothing, including an air supply device, a filtering device and an air supply device. The air supply device includes an air supply body and a blower, a refrigerating machine, a power supply group and a control board respectively arranged inside the air supply body. One end of the air supply body is provided with an air duct connected to the air inlet of the blower, the air outlet of the blower is connected to the air inlet of the refrigerating machine, the air outlet of the refrigerating machine is connected to the air duct provided at the other end of the air supply body, and the heat dissipation outlet of the refrigerating machine is arranged outside the air supply body. The blower and the refrigerating machine are powered by the power supply group, and the power supply group is externally connected with a charging interface on the air supply body. The control board is provided with a fuse, a switch button and a speed regulating button for adjusting the blower and the refrigerating machine on the outer wall of the air supply body;

[0005] The filtering device includes a first filtering layer arranged outside the air duct at one end of the air supply body and a second filtering layer arranged outside the air duct at the other end of the air supply body;

[0006] The air supply device includes a silica gel hose connected to the air outlet of the refrigerating machine, a ring joint and a Y-shaped joint connected to the silica gel hose in sequence. A seal for sealing the protective clothing is provided on the ring joint. The output ends of the Y-shaped joint are respectively connected with polyethylene air bags. A plurality of uniformly distributed air outlet holes are provided on the outer wall of the air bag, and the air bag is equipped with an adhesive for bonding to the inner wall of the protective clothing.

[0007] It also includes a plurality of one-way valves separately provided on the protective clothing. The silica gel pad of the one-way valve is arranged on one side of the air outlet. The air outlet is located outside the protective clothing, and the air inlet is located inside the protective clothing.

[0008] Further, the first filter layer includes an activated carbon non-woven fabric layer, an antibacterial layer and a nano-silver melt-blown non-woven fabric layer arranged in sequence, and the second filter layer is a nano-silver melt-blown non-woven fabric layer.

[0009] A partition layer is provided on the outside of the air supply body. The outside of the partition layer is arranged in a grid shape, and the heat dissipation outlet of the refrigerating machine is connected to the partition layer.

[0010] The ring joint includes an outer joint and an inner joint clamped together. A one-way valve is arranged inside the inner joint, and a silica gel pad for unidirectional passage of fresh air is arranged inside the one-way valve.

[0011] When the silica gel hose enters the inside of the protective clothing through the back, the outer joint in the ring joint is arranged outside the protective clothing, and the inner joint is arranged inside the protective clothing. The seal uses a ring-shaped sealant, and the outer joint is pasted to the outside of the protective clothing through the ring-shaped sealant to achieve sealing.

[0012] When the outer joint and the inner joint are clamped, a sealing ring is provided between the outer joint and the protective clothing, and a pressing piece is provided between the inner joint and the protective clothing.

[0013] When the silica gel hose enters the inside of the protective clothing through the facial opening, the seal uses a soft silica gel part with an adhesive function, and the ring joint entering the side of the facial opening is bonded to the inner wall of the protective clothing through the soft silica gel part.

[0014] The one-way valve separately provided on the protective clothing is bonded to the other side of the facial opening through a soft silica gel part. When wearing a face mask, both ends of the face mask can press on the soft silica gel part for sealing.

[0015] Between the ring joint and the Y-shaped joint, multiple Y-shaped joints are further connected. The gas interfaces of the Y-shaped joint are connected to the mask and the goggles to avoid breathing difficulties caused by wearing a mask and visual blurring caused by wearing goggles.

[0016] A shoulder strap is provided on the outside of the air supply body to fix the air supply body to the medical staff.

[0017] The power supply group is composed of a plurality of rechargeable lithium batteries combined.

[0018] When the present invention is in use, the air supply body is fixed to the medical staff wearing the protective clothing through a strap. When the silicone hose enters the inside of the protective clothing from the back, an opening needs to be made on the back. The outer joint and the inner joint on the annular joint are clamped on both sides of the protective clothing inside and outside. Among them, the outer joint and the protective clothing are fixed together through an annular sealant. The purpose of the one-way valve provided on the annular joint is to ensure that the protective clothing only receives the filtered gas from the fresh air system. Then, through the Y-shaped joint, the air bag is extended into the trouser legs and the upper body, and the air bag is adhered to the inner wall of the protective clothing through an adhesive. A number of evenly distributed air supply holes are provided on the outer wall of the air bag, which can evenly transport the air everywhere, gently and not directly blowing on the skin, so that the protective clothing is always in a ventilated state, keeping the skin dry and improving the comfort level.

[0019] When the silicone hose enters the inside of the protective clothing through the facial opening, the seal is a soft silicone part with an adhesive function. The annular joint on the side entering the facial opening is adhered to the inner wall of the protective clothing through the soft silicone part. The separately provided one-way valve can be adhered to the other side of the facial opening through the soft silicone part. When wearing the face mask, both ends of the face mask can press on the soft silicone part for sealing, and there is no need to set an opening on the back.

[0020] Between the annular joint and the Y-shaped joint, by connecting multiple Y-shaped joints again, the gas interface of the Y-shaped joint is connected to the mask to provide filtered gas for auxiliary breathing, avoiding the difficulty in breathing caused by wearing a mask; connected to the inside of the goggles, it can dry the water mist on the lens, avoid visual blurring, improve the wearing visibility of medical staff, and extend the working time limit.

[0021] When ventilation still cannot relieve the sultriness inside the protective clothing, start the refrigerator to make the air blown to the protective clothing become cold air, improving the sultry situation inside the protective clothing. According to personal needs, adjust the speed control button to adjust the speed of the cold air to a comfortable state for the human body.

[0022] The switch button and the speed control button provided on the control board can freely start the fan and the refrigerator in various usage states, and can adjust the speed according to the actual situation to meet the comfort level of the human body.

[0023] In addition, a number of separately provided one-way valves are provided. The silicone pad of the one-way valve is arranged on the side of the air outlet. The air outlet is located outside the protective clothing, and the air inlet is located inside the protective clothing. The purpose is to make the protective clothing only receive the filtered gas from the fresh air system and avoid the outside polluted gas from entering through the air outlet.

[0024] The filtration device of the present invention undergoes secondary filtration and can reach the N95 level or above. By delivering the filtered air into the isolation protective clothing and then discharging the air through a one-way valve separately provided on the protective clothing, a positive-pressure air supply cycle is formed, improving the utilization efficiency of the protective clothing, enhancing the physical sensation and work efficiency of medical workers, and effectively reducing the probability of being infected. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following further describes the structure and features of the present invention in conjunction with the drawings and embodiments.

[0026] Figure 1 It is a schematic structural diagram of the present invention.

[0027] Figure 2 It is a schematic connection diagram of the annular joint and the protective clothing in the present invention.

[0028] Figure 3 It is a schematic structural diagram of the one-way valve separately provided on the protective clothing in the present invention.

[0029] Attached Figures 1-3 In the figure, 1. First filter layer, 2. Blower, 3. Fuse, 4. Charging interface, 5. Speed control button, 6. Switch button, 7. Air supply body, 8. Control board, 9. Refrigerator, 10. Second filter layer, 11. Silicone hose, 12. Air bag, 13. Air outlet hole, 14. Y-shaped joint, 15. Annular joint, 16. Outer joint, 17. Sealing ring, 18. Protective clothing, 19. Compression sheet, 20. Inner joint, 21. One-way valve silicone pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following further describes the present invention in conjunction with the drawings.

[0031] Attached Figure 1 And Figure 2 is an embodiment of the present invention, which discloses a positive-pressure refrigerated fresh air system that can be used with a variety of protective clothing, including an air supply device, a filtration device, and an air supply device. The air supply device includes an air supply body 7 and a blower 2, a refrigerator 9, a power supply group, and a control board 8 respectively provided inside the air supply body 7. The air duct provided at one end of the air supply body 7 is connected to the air inlet of the blower 2, the air outlet of the blower 2 is connected to the air inlet of the refrigerator 9, the air outlet of the refrigerator 9 is connected to the air duct provided at the other end of the air supply body 7, and the heat dissipation outlet of the refrigerator 9 is connected to the interlayer provided outside the air supply body 7. The outside of the interlayer is grid-shaped. The blower 2 and the refrigerator 9 are powered by the power supply group. The power supply group is composed of a plurality of rechargeable lithium batteries, and the power supply group is connected with a charging interface 4 outside the air supply body 7. The control 8 is provided with a fuse 3, a switch button 6 and a speed control button 5 for adjusting the blower 2 and the refrigerator 9 on the outer wall of the air supply body 7. A backpack strap is provided outside the air supply body 7 to fix the air supply body 7 to the medical staff.

[0032] The filtering device includes a first filter layer 1 arranged outside the air duct at one end of the air supply body 7 and a second filter layer 10 arranged outside the air duct at the other end of the air supply body 7. The first filter layer 1 includes an activated carbon non-woven fabric layer, an antibacterial layer and a nano-silver melt-blown non-woven fabric layer arranged in sequence, and the second filter layer 10 is a nano-silver melt-blown non-woven fabric layer.

[0033] The air supply device includes a silicone hose 11 connected to the air outlet of the refrigerator 9, a ring joint 15 and a Y-shaped joint 14 connected to the silicone hose 11 in turn. The ring joint 15 is provided with a ring-shaped sealant for sealing between the silicone hose 11 and the protective suit 18. The output ends of the Y-shaped joint 14 are respectively connected to polyethylene air bags 12. The outer wall of the air bag 12 is provided with a plurality of evenly distributed air outlet holes 13, and the air bag 12 is equipped with a backing adhesive for bonding to the inner wall of the protective suit 18.

[0034] The annular joint 15 is used when the silicone hose passes through the protective suit, and the annular joint 15 is divided into an external joint 16 provided on the outside of the protective suit 18 and an internal joint 20 provided on the inside of the protective suit 18. The external joint 16 and the internal joint 20 are clamped together. When the external joint 16 and the internal joint 20 are clamped, a sealing ring 17 is provided between the external joint 16 and the protective suit 18, and a compression piece 19 is provided between the internal joint 20 and the protective suit 18. A one-way valve 22 is provided inside the internal joint 20, and a silicone pad 21 is provided inside the one-way valve 22 near the connection with the silicone hose 11. The outside of the external joint 16 is adhered to the outside of the protective suit by an annular sealant for sealing.

[0035] When the present invention is in use, the air supply body is fixed to the medical staff wearing protective clothing through the straps, and the silicone hose is inserted into the inside of the protective clothing. When passing through the protective clothing, the silicone hose is fixed and sealed on the protective clothing through the ring joint and the ring sealant. The one-way valve provided on the ring joint is used to ensure that the protective clothing only accepts filtered gas from the fresh air system. Thereafter, the air bag is extended into the trouser legs and top through the Y-shaped joint, and the air supply pipe is adhered to the inner wall of the protective clothing through the back adhesive. The outer wall of the air bag is provided with a number of evenly distributed air supply holes, which can evenly transport the air to all places, gently and not directly blow to the skin, so that the protective clothing is always in a ventilated state, keeping the skin dry and improving comfort.

[0036] The above embodiments are the ways for the silicone hose in the present invention to enter the interior through the back of the protective suit. Another embodiment of the present invention is that when the silicone hose enters the interior of the protective suit through the facial opening, the seal is a soft silicone part with an adhesive function. The annular joint on the side entering the facial opening is adhered to the inner wall of the protective suit through the soft silicone part. The separately provided one-way valve can be adhered to the other side of the facial opening through the soft silicone part. When wearing the face mask, both ends of the face mask can press on the soft silicone part for sealing, and there is no need to set an opening at the back.

[0037] Multiple Y-shaped joints are further connected between the annular joint and the Y-shaped joint. The gas interface of the Y-shaped joint is connected to the mask to provide filtered gas for assisted breathing and avoid shortness of breath caused by wearing the mask; it is connected to the inside of the goggles to be able to dry the water mist on the lens, avoid visual blurring, improve the wearing visibility of medical staff, and extend the working time limit.

[0038] Figure 3 It shows that when the present invention is in use, it also includes multiple one-way valves separately provided on the protective suit. The silicone pad of the one-way valve is arranged on the air outlet side. The air outlet is located outside the protective suit, and the air inlet is located inside the protective suit. In positive pressure ventilation, continuous fresh air enters from the silicone hose and comes out from the air outlet of the one-way valve separately provided on the protective suit, which can ensure that the protective suit can only receive the filtered gas from the fresh air system and avoid external polluted gas from entering through the air outlet.

[0039] The above-described are only the preferred embodiments of the present invention. The above specific embodiments do not limit the present invention. Any modification, alteration, or equivalent replacement made by those of ordinary skill in the art based on the above description shall fall within the protection scope of the present invention.

Claims

1. A positive pressure refrigeration fresh air system that can be used in conjunction with a variety of protective clothing, comprising an air supply device, a filtering device and an air supply device, characterized in that: The air supply device includes an air supply body, a blower, a refrigerator, a power supply group and a control board which are respectively arranged inside the air supply body. An air duct arranged at one end of the air supply body is connected to the air inlet of the blower, the air outlet of the blower is connected to the air inlet of the refrigerator, the air outlet of the refrigerator is connected to the air duct arranged at the other end of the air supply body, and the heat dissipation outlet of the refrigerator is arranged outside the air supply body. The blower and the refrigerator are powered by the power supply group, and the power supply group is externally connected with a charging interface on the air supply body. The control board is provided with a fuse, a switch button and a speed regulation button for adjusting the blower and the refrigerator on the outer wall of the air supply body; The filtering device includes a first filter layer arranged outside the air duct at one end of the air supply body and a second filter layer arranged outside the air duct at the other end of the air supply body; The air supply device includes a silica gel hose connected to the air outlet of the refrigerator, a ring joint and a Y-shaped joint connected to the silica gel hose in sequence. A sealing member for sealing the protective clothing is arranged on the ring joint. The output ends of the Y-shaped joint are respectively connected with polyethylene air bags. A plurality of uniformly distributed air outlet holes are arranged on the outer wall of the air bag, and the air bag is equipped with an adhesive for bonding to the inner wall of the protective clothing; It also includes a plurality of one-way valves separately arranged on the protective clothing. The silica gel pad of the one-way valve is arranged on one side of the air outlet. The air outlet is located outside the protective clothing, and the air inlet is located inside the protective clothing; The ring joint includes an outer joint and an inner joint clamped together. A one-way valve is arranged inside the inner joint, and a silica gel pad for unidirectional passage of fresh air is arranged inside the one-way valve. When the outer joint and the inner joint are clamped, a sealing ring is arranged between the outer joint and the protective clothing, and a pressing piece is arranged between the inner joint and the protective clothing. Multiple Y-shaped joints are further connected between the ring joint and the Y-shaped joint, and the gas interfaces of the Y-shaped joints are connected to the mask and the goggles to avoid breathing discomfort caused by wearing a mask and visual blurring caused by wearing goggles; When the silica gel hose enters the protective clothing through the back, the outer joint in the ring joint is arranged outside the protective clothing, and the inner joint is arranged inside the protective clothing. The sealing member adopts a ring-shaped sealant, and the outer joint of the protective clothing is pasted through the ring-shaped sealant to achieve sealing. When the silica gel hose enters the protective clothing through the facial opening, the sealing member adopts a soft silica gel member with an adhesive function, and the ring joint entering the side of the facial opening is bonded to the inner wall of the protective clothing through the soft silica gel member. The one-way valve separately arranged on the protective clothing is bonded to the other side of the facial opening through a soft silica gel member. When wearing the face mask, both ends of the face mask can press on the soft silica gel member for sealing.

2. The positive pressure refrigeration fresh air system compatible with a variety of protective clothing according to claim 1, wherein: The first filter layer includes an activated carbon non-woven fabric layer, an antibacterial layer and a nano-silver melt-blown non-woven fabric layer arranged in sequence, and the second filter layer is a nano-silver melt-blown non-woven fabric layer.

3. The positive pressure refrigeration fresh air system compatible with a variety of protective clothing according to claim 1, characterized in that: A partition layer is arranged outside the air supply body, and the outside of the partition layer is arranged in a grid shape. The heat dissipation outlet of the refrigerator is connected to the partition layer.

4. The positive pressure refrigeration fresh air system compatible with a variety of protective clothing according to claim 1, characterized in that: A shoulder strap is arranged outside the air supply body to fix the air supply body to the medical staff.

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