WO2024117377A1 - Procédé et appareil d'épuration de ventilation sûre - Google Patents

Procédé et appareil d'épuration de ventilation sûre Download PDF

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Publication number
WO2024117377A1
WO2024117377A1 PCT/KR2023/000506 KR2023000506W WO2024117377A1 WO 2024117377 A1 WO2024117377 A1 WO 2024117377A1 KR 2023000506 W KR2023000506 W KR 2023000506W WO 2024117377 A1 WO2024117377 A1 WO 2024117377A1
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air
target space
hydrogen peroxide
outside
controller
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PCT/KR2023/000506
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English (en)
Korean (ko)
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이승재
김지완
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주식회사 스테라피
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Publication of WO2024117377A1 publication Critical patent/WO2024117377A1/fr

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  • One embodiment of the present invention relates to a method and device for providing safety ventilation.
  • Sterilization refers to a sterile state in which all types of microorganisms (bacteria, viruses, fungi, etc.), including spores, are completely removed. Disinfection destroys or weakens the vitality of microorganisms and eliminates their ability to infect and proliferate. It can kill vegetative cells of microorganisms, but does not destroy highly resistant spores.
  • Medical sterilizers exist that sterilize chlorine dioxide by converting it into gas.
  • Medical sterilizers consist of cartridges containing compounds that are introduced to generate chlorine dioxide gas inside the sterilizer, so they can be easily replaced.
  • the generated chlorine dioxide gas is used to sterilize surgical instruments and medical devices for patient treatment.
  • Medical sterilizers that sterilize by converting chlorine dioxide into gas can efficiently provide strong sterilization performance in a short period of time.
  • a conventional hydrogen peroxide plasma ionization generator uses a jet nozzle structure that forms an air inlet passage.
  • the hydrogen peroxide plasma ionization generator sprays a particle size that is finer than the hydrogen peroxide and ion particle size sprayed by a single jet nozzle.
  • the hydrogen peroxide plasma ionization generator can effectively sterilize and remove microorganisms, bacteria, and mold that may exist in the minute spaces inside the room and between equipment.
  • air containing hydrogen peroxide particles can be adaptively and quickly removed using one or more of a plurality of paths.
  • the purpose is to provide methods and devices for providing safe ventilation.
  • an internal circulation fan that intakes air containing hydrogen peroxide (H 2 O 2 ) from the target space and then delivers it to the inside; an external air circulation fan that intakes air containing the hydrogen peroxide from the target space and then delivers it to the outside; Based on preset conditions, the air containing the hydrogen peroxide is adaptively discharged through one or more paths among a plurality of previously formed paths, and external air is sucked in from the outside of the target space and then delivered to the inside of the target space. It provides a safety ventilation device comprising a controller.
  • an internal and external air circulation fan that intakes air containing hydrogen peroxide (H 2 O 2 ) from the target space and then transfers it to the inside and outside; Based on preset conditions, the air containing the hydrogen peroxide is adaptively discharged through one or more paths among a plurality of previously formed paths, and external air is sucked in from the outside of the target space and then delivered to the inside of the target space.
  • controller A distributor that distributes the air containing the hydrogen peroxide to one or more paths among a plurality of preset paths under the control of the controller.
  • air containing hydrogen peroxide particles is adaptively removed using one or more of a plurality of paths. This has the effect of quickly removing it.
  • FIG. 1 is a diagram showing a safety ventilation aeration system according to a first embodiment.
  • Figure 2 is a diagram showing a safety ventilation aeration system according to a second embodiment.
  • Figure 3 is a diagram showing a safety ventilation aeration system according to a third embodiment.
  • Figure 4 is a diagram showing the completion time of giving up safety ventilation according to this embodiment.
  • Figure 5 is a diagram showing a safety ventilation device existing inside the target space according to this embodiment.
  • Figure 6 is a diagram showing a safety ventilation device existing outside the target space according to this embodiment.
  • Figure 7 is a diagram showing a safety ventilation aeration device applying an internal and external air circulation fan and an external air circulation fan according to this embodiment.
  • Figure 8 is a diagram showing a safety ventilation aeration device using only an internal and external air circulation fan according to this embodiment.
  • Figure 9 is a diagram showing a safety ventilation aeration device without applying a positive catalytic filter for scrubbing according to this embodiment.
  • Figure 10 is a diagram showing a safety ventilation device that separates internal circulation and external air circulation according to this embodiment.
  • Figure 11 is a diagram showing a safety ventilation aeration device using only an internal and external air circulation fan according to this embodiment.
  • Figure 12 is a diagram showing a safety ventilation aeration device applying air conditioner intake and exhaust control according to this embodiment.
  • 1, 2, and 3 are diagrams showing safety ventilation aeration systems according to the first, second, and third embodiments.
  • the safety ventilation aeration system includes a target space 110, a spray-type sterilization device 120, and a safety ventilation aeration device 130.
  • the components included in the safety ventilation aeration system are not necessarily limited to these.
  • the target space 110 includes GMP (Good Manufacturing Practice), biosafety containment facilities, special facilities, and medical facilities requiring infection control.
  • GMP Good Manufacturing Practice
  • the spray-type sterilization device 120 is disposed within the target space 110 for space sterilization.
  • the spray-type sterilization device 120 sterilizes the target space 110 by spraying hydrogen peroxide (H 2 O 2 ) in the form of an aerosol.
  • the spray-type sterilization device 120 vaporizes the hydrogen peroxide solution or converts it into water droplets and sprays them into the target space 110.
  • the spray-type sterilization device 120 sprays hydrogen peroxide in the form of an aerosol to sterilize airborne and surface bacteria inside the target space 110 at a level of 6 Log (10-6).
  • the Safe Ventilation Scrubbing Apparatus 130 sprays hydrogen peroxide in the form of an aerosol from the spray-type sterilization device 120 to the target space 110 so that it floats inside the target space 110. After space sterilization of bacteria and surface bacteria is completed, hydrogen peroxide contained in the air is quickly removed.
  • the spray-type sterilization device 120 goes through an injection process, a dwell process, and an aeration process to perform spatial sterilization of the target space 110.
  • the spray-type sterilization device 120 mists the hydrogen peroxide solution into the target space 110 through a spraying process and sprays it into the target space 110.
  • microorganisms are removed due to reactive oxygen species generated by vaporization of the hydrogen peroxide solution in the air during the resting process. Since hydrogen peroxide is toxic by inhalation during the space sterilization process, the target space 110 is sealed so that hydrogen peroxide contained in the air is not exposed outside the target space 110.
  • Hydrogen peroxide contained in the air naturally decomposes within 24 hours in the air.
  • the time required for the hydrogen peroxide contained in the air within the target space 110 to naturally decompose is too long, so the target space must be quickly removed after sterilization and disinfection.
  • the safety ventilation aeration device 130 quickly removes residual hydrogen peroxide contained in the air of the target space 110 through the aeration process to bring the hydrogen peroxide concentration in the air to a level of 0 ppm.
  • the safety ventilation aeration system arranges both the spray-type sterilization device 120 and the safety ventilation aeration device 130 inside the target space 110.
  • the safety ventilation aeration system places a spray-type sterilization device 120 inside the target space 110 and a safety ventilation aeration device 130 outside the target space 110. ) are all placed.
  • the safety ventilation aeration system arranges a part of the spray-type sterilization device 120 and the safety ventilation aeration device 130 inside the target space 110, and disposes a part of the target space 110 ( The remainder of the safety ventilation aerator 130 is placed outside of 110).
  • Figure 4 is a diagram showing the completion time of giving up safety ventilation according to this embodiment.
  • the spray-type sterilization device 120 sterilizes the target space 110 using hydrogen peroxide. Space sterilization is carried out in the target space 110 through a spraying process, a resting process, and an abandonment process. The abandonment process takes up more than 50% of the total time required for space sterilization.
  • the spray-type sterilization device 120 can partially shorten the spray time by increasing the spray amount when vaporizing the hydrogen peroxide solution or converting it into water droplets and spraying it into the target space 110.
  • the degree of reduction in the spray time is not greater than the abandonment time. didn't
  • the pause time is fixed at 20 to 30 minutes and cannot be shortened. Therefore, if the aeration time is shortened, the overall time required for space sterilization can be significantly shortened.
  • the medical field requires that the total time required to sterilize the space does not exceed 3 hours.
  • the safety ventilation aeration device 130 introduces external air into the target space 110, lowers the humidity inside the target space 110, and reduces the concentration of hydrogen peroxide in the air. It promotes the decomposition of hydrogen peroxide by diluting it.
  • the safety ventilation aeration device 130 is cycled so that it quickly decreases in the aeration time after the injection time and rest time. Air is circulated using the path 502.
  • the safety ventilation aeration device 130 uses the scrubbing path (first external air circulation path) 531 to scrub the hydrogen peroxide contained in the air more quickly, and the concentration of hydrogen peroxide contained in the air in the latter half of the aeration time is shown on the graph. It is more effective when (ppm) is low.
  • the safety ventilation aeration device 130 determines the output of the plurality of fans and one or more paths among the plurality of paths based on the total resources that can be operated so that the hydrogen peroxide contained in the air is scrubbed as quickly as possible.
  • the safety ventilation aeration device 130 optimizes and distributes determined resources according to internal control.
  • Figure 5 is a diagram showing a safety ventilation device existing inside the target space according to this embodiment.
  • the safety ventilation aeration device 130 shown in FIG. 5 has an internal air circulation system and an external air circulation system installed inside the target space 110.
  • the safety ventilation aeration device 130 can control the aeration time according to the situation.
  • the safety ventilation device 130 is preferably applied when the target space 110 is wide.
  • the safety ventilation aeration device 130 shown in FIG. 5 includes an internal air circulation path 502, a first positive catalytic filter 508, an internal air circulation fan 510, a scrubbing path (first external air circulation path) 531, and a first external air circulation path 531.
  • Components included in the safety ventilation device 130 are not necessarily limited thereto.
  • the indoor circulation fan 510, the first outside air circulation fan 532, the second outside air circulation fan 544, and the controller 520 shown in FIG. 5 are disposed inside the target space 110.
  • the internal circulation path 502 forms a passage that filters air containing hydrogen peroxide and then exhausts it into the interior of the target space 110.
  • the internal circulation path 502 arranges the first positive catalytic filter 508 and the internal circulation fan 510 on a passage leading to the interior of the target space 110.
  • the circulation path 502 has a structure that maximizes the contact between the air containing hydrogen peroxide inside the target space 110 and the first positive catalytic filter 508 for circulation.
  • the first positive catalytic filter 508 decomposes hydrogen peroxide using manganese dioxide (MnO 2 ), platinum (Pt), etc.
  • the first positive catalytic filter 508 may be coated with manganese dioxide or platinum.
  • the first positive catalytic filter 508 may have a different structure due to the different purpose of the second positive catalytic filter 534.
  • the first positive catalytic filter 508 is different from the layer inserted into the second positive catalytic filter 534 to reduce internal resistance.
  • the layer included in the first positive catalytic filter 508 includes a filter with a wide surface for rapid air circulation.
  • the second positive catalyst filter 534 stacks a plurality of layers to reduce hydrogen peroxide to 0 ppm.
  • the first positive catalytic filter 508 can adjust its effect depending on the number and distance of a plurality of filters (eg, 5) present inside. Filtering performance can be adjusted depending on the length of the pipe where the first positive catalytic filter 508 is located.
  • the internal circulation fan 510 intakes air containing hydrogen peroxide (H 2 O 2 ) from the target space 110 and then delivers it to the interior.
  • the scrubbing path (first external air circulation path) 531 forms a path for scrubbing air containing hydrogen peroxide and then exhausting it to the outside of the target space 110.
  • the scrubbing path (first outside air circulation path) 531 includes a first outside air valve 532, a second positive catalytic filter 534, and a first outside air circulation fan 536 on a passage leading to the outside of the target space 110. Place it.
  • the scrubbing path (first external air circulation path) 531 discharges air containing hydrogen peroxide inside the target space 110 to the outside.
  • the scrubbing path (first external air circulation path) 531 uses the second positive catalytic filter 534 to remove hydrogen peroxide from the air containing hydrogen peroxide inside the target space 110 for safety and then discharges it to the outside.
  • the pipe located in the scrubbing path (first outside air circulation path) 531 must be designed to have relatively higher filtering performance than the inside circulation path 502, the filter spacing is large and the pipe length is designed to be long.
  • the first outside air valve 532 opens and closes a passage so that air containing hydrogen peroxide is exhausted to the scrubbing path (first outside air circulation path) 531 under the control of the controller 520.
  • the second positive catalytic filter 534 decomposes hydrogen peroxide using manganese dioxide, platinum, etc.
  • the second positive catalyst filter 534 may be coated with manganese dioxide or platinum.
  • the second positive catalytic filter 534 has a different purpose from the first positive catalytic filter 508 and may have a different structure.
  • the second positive catalyst filter 534 stacks a plurality of layers to reduce hydrogen peroxide to 0 ppm.
  • the second positive catalytic filter 534 can adjust its effect depending on the number and distance of a plurality of filters (for example, 5) present inside. Filtering performance can be adjusted depending on the length of the pipe where the second positive catalytic filter 534 is located.
  • the first outside air circulation fan 536 intakes air containing hydrogen peroxide from the target space 110 and then delivers it to the outside.
  • the emergency discharge path (second external air circulation path) 541 forms a passage for discharging air containing hydrogen peroxide to the outside of the target space 110 without filtering or scrubbing.
  • the emergency discharge path (second outside air circulation path) 541 arranges a second outside air valve 542 and a second outside air circulation fan 544 on a passage leading to the outside of the target space 110.
  • the emergency discharge path (second external air circulation path) 541 discharges the air containing hydrogen peroxide inside the target space 110 to the outside as quickly as possible in an emergency situation.
  • the second outside air valve 542 opens and closes a passage so that air containing hydrogen peroxide is discharged to the emergency discharge path (second outside air circulation path) 541 under the control of the controller 520.
  • the second outside air circulation fan 544 intakes air containing hydrogen peroxide from the target space 110 and then delivers it to the outside.
  • the controller 520 is a control means that controls the overall function of the safety ventilation aeration device 130, and includes the internal circulation fan 510, the first outside air circulation fan 536, and the second outside air circulation of the safety ventilation aeration device 130. It controls the fan 544, the air inlet fan 564, the first outside air valve 532, the second outside air valve 542, and the air inlet valve 564.
  • the controller 520 includes a memory that stores a program for controlling the components of the safety ventilation aeration device 130 and a microprocessor that executes the program to control the components of the safety ventilation aeration device 130.
  • the controller 520 uses the differential pressure sensor 550 to determine whether negative pressure is generated.
  • the controller 520 adjusts the amount of air discharged to the outside and the amount of incoming air to be equal depending on whether negative pressure is generated.
  • the controller 520 controls the air volume based on the sensing value obtained from the differential pressure sensor 550, if necessary.
  • the controller 520 controls the amount of air to minimize the abandonment time.
  • the controller 520 minimizes the abandonment time by controlling the amount of internal circulation and the amount of external air circulation.
  • the controller 520 adjusts the amount of internal circulation and external air circulation according to the concentration of hydrogen peroxide.
  • the controller 520 controls a function (emergency air discharge function) to prepare for an emergency situation.
  • the controller 520 adaptively exhausts air containing hydrogen peroxide through one or more paths among a plurality of previously formed paths based on preset conditions, and after intake of external air from the outside of the target space 110, it is discharged into the target space ( 110).
  • the plurality of paths include an internal circulation path 502, a scrubbing path (first outside air circulation path) 531, an emergency discharge path (second outside air circulation path) 541, and an air inlet path 561.
  • the controller 520 controls the air inlet path 561 to be closed during the injection process and the rest process, and controls it to be open during the abandonment process.
  • the controller 520 controls the internal circulation fan 510 to allow air containing hydrogen peroxide to pass through the first positive catalytic filter 508 and output filtered air.
  • the controller 520 causes the air filtered by the first positive catalytic filter 508 to be exhausted back into the target space 110 by the wind pressure of the internal circulation fan 510.
  • the controller 520 controls the first outside air valve 532 and the first outside air circulation fan 536 so that air containing hydrogen peroxide passes through the second positive catalytic filter 534 to output air scrubbed with hydrogen peroxide to 0 ppm. do.
  • the controller 520 causes the air scrubbed by the second positive catalytic filter 534 to be exhausted to the outside of the target space 110 by the wind pressure of the first outside air circulation fan 536.
  • the controller 520 controls the second outside air valve 542 and the second outside air circulation fan 544 to filter the air containing hydrogen peroxide to the outside of the target space 110 by the wind pressure of the second outside air circulation fan 544. Or, allow it to be discharged as is without scrubbing.
  • the controller 520 controls the air inlet valve 564 and the air inlet fan 564 to allow external air to pass through the air filter 562 and output filtered air.
  • the controller 520 causes the air filtered by the air filter 562 to be exhausted into the target space 110 by the wind pressure of the air inlet fan 564.
  • the controller 520 closes the inlet valve 564 to prevent air containing hydrogen peroxide inside the target space from leaking out during the injection process and resting process, and opens it during the aeration process.
  • the controller 520 controls the operation of the air inlet fan 564 or adjusts the speed of the first outside air circulation fan 536 and the second outside air circulation fan 544.
  • the controller 520 controls the operating speeds of the first outside air circulation fan 536, the second outside air circulation fan 544, and the air inlet fan 566 to optimize the concentration of hydrogen peroxide in the air containing hydrogen peroxide, optimize the aeration time, and prevent negative pressure. Adjust adaptively according to at least one of the following.
  • the controller 520 receives the concentration of hydrogen peroxide from the hydrogen peroxide concentration sensor provided in the spray-type sterilization device 120.
  • the controller 520 applies abandonment time optimization according to various situations required in the field, such as minimizing abandonment time and occurrence of emergency situations.
  • the controller 520 applies negative pressure generation prevention according to the differential pressure occurring in the target space 110.
  • the controller 520 operates a plurality of paths (indoor circulation path 502, scrubbing path (first outside air circulation path) 531, emergency discharge) according to the hydrogen peroxide concentration (ppm) contained in the air taken in from the target space 110.
  • One or more paths (second external air circulation path) 541) may be selectively operated.
  • the controller 520 can selectively control one or more paths among a plurality of paths to optimize efficiency. For example, if the controller 520 performs scrubbing on the target space 110 using only a single path, it takes approximately 3 hours and 30 minutes, and if one or more paths among a plurality of paths are selectively used, it takes approximately 2 hours. It takes less than an hour.
  • the controller 520 When the hydrogen peroxide concentration (ppm) contained in the air taken in from the target space 110 is higher than a preset threshold, the controller 520 reduces the hydrogen peroxide concentration with high efficiency via the air circulation path 502.
  • the controller 520 takes a lot of time to lower the hydrogen peroxide concentration when using the internal circulation path 502. Therefore, the outside air is sent out to the target space 110 using the scrubbing path (first outside air circulation path) 531.
  • the controller 520 can most quickly reduce the concentration of hydrogen peroxide in the air by operating as an emergency discharge. Discharging the air containing hydrogen peroxide absorbed from the target space 110 through the emergency discharge path (second external air circulation path) 541 can most quickly reduce the hydrogen peroxide concentration. However, there must be no risk of safety accidents occurring in the area where the vent of the emergency discharge path (second outdoor air circulation path) 541 is located.
  • the controller 520 must simultaneously use the ventilation circulation path 502 and the scrubbing path (first external air circulation path) 531 in order to quickly lower the concentration of hydrogen peroxide in the air following emergency discharge. Internally, circulation is used to promote the decomposition of hydrogen peroxide in the air, and the air containing hydrogen peroxide inside is discharged to the outside, and the outside air is sucked in to dilute the inside air.
  • the controller 520 operates centered on the first positive catalytic filter 508 when the hydrogen peroxide in the air is at a high concentration, and discharges air through the second positive catalytic filter 534 when the hydrogen peroxide in the air is at a low concentration. can do.
  • the controller 520 can go to the center of circulation and use multiple paths at low concentrations.
  • the controller 520 adaptively adjusts the operating speed of the internal and external circulation fan 710 according to the concentration of hydrogen peroxide contained in the air.
  • the controller 520 When the controller 520 recognizes an emergency situation, the controller 520 exhausts the air containing hydrogen peroxide into the emergency discharge path (second outside air circulation path) 541 so that the air containing hydrogen peroxide is discharged to the emergency discharge path (second outside air circulation path) 541.
  • the second outdoor air circulation fan 544 is operated at the maximum RPM so that the air volume of the second outdoor air circulation fan 544 is operated at the maximum air volume.
  • the ventilation circulation path 502 When the controller 520 recognizes an emergency situation, the ventilation circulation path 502, the scrubbing path (first outside air circulation path) 531, and the emergency discharge path (second outside air circulation path) 541 contain hydrogen peroxide.
  • the controller 520 causes the air inlet fan 564 to operate at a preset RPM so that the air volume of the air inlet fan 564 is preset. Make sure to maintain air volume.
  • the differential pressure sensor 550 measures the pressure difference inside and outside the space. When air containing hydrogen peroxide is discharged from the target space 110 to the outside of the target space 110 due to the operation of the first outside air circulation fan 536 and the second outside air circulation fan 544, the differential pressure sensor 550 detects the target space 110. The differential pressure occurring in the space 110 is sensed.
  • the air intake path 561 forms a passage that intakes external air from the outside of the target space 110 and then delivers it to the inside of the target space 110.
  • the air inlet path 561 arranges an air filter 562, an air inlet valve 564, and an air inlet fan 564 on a passage leading from the outside to the inside of the target space 110.
  • the air inlet path 561 prevents a negative pressure difference that occurs when air containing hydrogen peroxide inside the target space 110 is discharged to the outside.
  • the air filter 562 includes one of a ULPA filter, a HEPA filter, a general filter, and a dust filter.
  • the air filter 562 filters incoming air due to microbial risk.
  • the air filter 562 includes a block inside.
  • the air inlet valve 564 opens and closes the passage so that the air containing hydrogen peroxide does not leak to the outside through the air inlet path 561 and external air enters the inside.
  • the air inlet valve 564 controls the inflow and outflow of air, and can be installed in a different location from the air inlet fan 564.
  • An air intake fan 564 is optionally placed.
  • the air inlet fan 564 is not placed in an environment where a negative pressure difference does not occur.
  • the air inlet fan 564 draws in external air from the outside under the control of the controller 520 and then delivers it to the inside of the target space 110 along the previously formed air inlet path 561.
  • Figure 6 is a diagram showing a safety ventilation device existing outside the target space according to this embodiment.
  • the safety ventilation device 130 shown in FIG. 6 has an internal air circulation system and an external air circulation system installed outside the target space 110.
  • the safety ventilation aerator 130 is suitable when the target space 110 is narrow.
  • the safety ventilation aeration device 130 can control the aeration time according to the situation.
  • the safety ventilation aeration device 130 shown in FIG. 6 includes a first positive catalytic filter 508, an internal circulation fan 510, a first external air valve 532, a second positive catalytic filter 534, and a first external air circulation fan ( 536), second outside air valve 542, second outside air circulation fan 544, controller 520, differential pressure sensor 550, air filter 562, air inlet valve 564, air inlet fan 564 Includes.
  • Components included in the safety ventilation device 130 are not necessarily limited thereto.
  • the indoor circulation fan 510, the first outside air circulation fan 536, the second outside air circulation fan 544, and the controller 520 are disposed outside the target space 110.
  • Components included in the safety ventilation aeration device 130 shown in FIG. 6 are the same as those in the safety ventilation aeration device 130 shown in FIG. 5, and therefore detailed descriptions are omitted.
  • Figure 7 is a diagram showing a safety ventilation aeration device applying an internal and external air circulation fan and an external air circulation fan according to this embodiment.
  • the safety ventilation aeration device 130 shown in FIG. 7 consists of a ventilation circulation system and an emergency air discharge system with one fan.
  • the safety ventilation exhaust device 130 is a system that removes the second outside air circulation fan 544 for discharging emergency air and replaces the second outside air valve 542 with a distributor 720.
  • the safety ventilation aeration device 130 shown in FIG. 7 includes an internal and external air circulation fan 710, a distributor 720, an internal circulation path 502, a first positive catalytic filter 508, and a scrubbing path (first external air circulation path). (531), first outside air valve 532, second positive catalytic filter 534, first outside air circulation fan 536, emergency discharge path (second outside air circulation path) 541, controller 520, differential pressure sensor It includes (550), an air inlet path 561, an air filter 562, an air inlet valve 564, and an air inlet fan 564. Components included in the safety ventilation device 130 are not necessarily limited thereto.
  • the safety ventilation aeration device 130 shown in FIG. 7 sequentially arranges an internal and external air circulation fan 710, a distributor 720, and a first positive catalytic filter 508.
  • the safety ventilation aerator 130 shown in FIG. 7 does not include the second outside air valve 542 and the second outside air circulation fan 544.
  • the internal circulation path 502 forms a passage that filters air containing hydrogen peroxide and then exhausts it into the interior of the target space 110.
  • the circulation path 502 arranges the first positive catalytic filter 508 after the distributor on a passage leading to the interior of the target space 110.
  • the internal and external air circulation fan 710 intakes air containing hydrogen peroxide (H 2 O 2 ) from the target space 110 and then delivers it to the inside and outside.
  • the internal and external air circulation fan 710 sucks in air containing hydrogen peroxide in the target space 110 under the control of the controller 520 and delivers it to the distributor 720.
  • the distributor 720 distributes the air containing hydrogen peroxide so that it is exhausted through one or more of a plurality of preset paths under the control of the controller 520.
  • the plurality of paths include an internal air circulation path 502 and an emergency discharge path (second external air circulation path) 541.
  • the distributor 720 transmits the air containing hydrogen peroxide using one or more paths among a plurality of paths under the control of the controller 520.
  • the controller 520 causes air containing hydrogen peroxide to circulate into the target space 110 via the first positive catalytic filter 508 via the internal circulation path 502.
  • the controller 520 filters the air containing hydrogen peroxide absorbed from the target space 110 via the pouring circulation path 502 using the first positive catalytic filter 508, and then returns the filtered air to the target space 110. ) to ensure internal circulation in the direction of air circulation.
  • the air containing hydrogen peroxide is scrubbed through the scrubbing path (first external air circulation path) 531 under the control of the controller 520, and the hydrogen peroxide is scrubbed through the second positive catalytic filter 534 to reduce the concentration to 0 ppm. Make it possible.
  • the distributor 720 uses the second positive catalytic filter 534 to remove air containing hydrogen peroxide sucked in from the target space 110 via the scrubbing path (first external air circulation path) 531 under the control of the controller 520. After filtering, the filtered air is discharged to the outside of the target space 110 at 0 ppm.
  • the distributor 720 emergency discharges air containing hydrogen peroxide to the outside of the target space 110 without passing through the filter via the emergency discharge path (second outside air circulation path) 541 under the control of the controller 520. do.
  • the distributor 720 absorbs air containing hydrogen peroxide from the target space 110 via the emergency discharge path (second outside air circulation path) 541 under the control of the controller 520, and then releases hydrogen peroxide without passing through the filter. Air containing is emergency discharged to the outside of the target space 110.
  • the distributor 720 may discharge air containing hydrogen peroxide drawn from the target space 110 in one direction or simultaneously discharge it in two directions according to preset conditions.
  • the first positive catalytic filter 508 decomposes hydrogen peroxide using manganese dioxide, platinum, etc.
  • the scrubbing path (first external air circulation path) 531 forms a path for scrubbing air containing hydrogen peroxide and then exhausting it to the outside of the target space 110.
  • the scrubbing path (first outside air circulation path) 531 includes a first outside air valve 532, a first outside air circulation fan 536, and a second positive catalytic filter 534 on a passage leading to the outside of the target space 110. Place it.
  • the first outside air valve 532 opens and closes a passage so that air containing hydrogen peroxide is exhausted to the scrubbing path (first outside air circulation path) 531 under the control of the controller 520.
  • the second positive catalytic filter 534 decomposes hydrogen peroxide using manganese dioxide, platinum, etc.
  • the first outside air circulation fan 536 intakes air containing hydrogen peroxide from the target space 110 and then delivers it to the outside.
  • the emergency discharge path (second external air circulation path) 541 forms a path for discharging air containing hydrogen peroxide to the outside of the target space 110 without filtering or scrubbing.
  • the emergency discharge path (second outside air circulation path) 541 has no filter disposed on a passage leading to the outside of the target space 110.
  • the controller 520 controls the internal and external air circulation fan 710 to exhaust the air containing hydrogen peroxide to the outside of the target space 110 via the emergency discharge path (second external air circulation path) 541.
  • the controller 520 adaptively exhausts air containing hydrogen peroxide through one or more paths among a plurality of previously formed paths based on preset conditions, and after intake of external air from the outside of the target space 110, it is discharged into the target space ( 110).
  • the controller 520 controls the internal and external air circulation fan 710 to allow air containing hydrogen peroxide to pass through the first positive catalytic filter 508 and output filtered air.
  • the controller 520 causes the air filtered by the first positive catalytic filter 508 to be exhausted back into the target space 110 by the wind pressure of the internal and external air circulation fan 710.
  • the controller 520 controls the first outside air valve 532 and the first outside air circulation fan 536 so that air containing hydrogen peroxide passes through the second positive catalytic filter 534 to output air scrubbed with hydrogen peroxide to 0 ppm. do.
  • the controller 520 causes the scrubbed air to be exhausted to the outside of the target space 110 by the wind pressure of the internal and external air circulation fan 710.
  • the controller 520 adaptively adjusts the operating speed of the internal and external air circulation fan 710 and the first external air circulation fan 536 according to the concentration of hydrogen peroxide in the air containing hydrogen peroxide, optimization of aeration time, and prevention of negative pressure generation.
  • the controller 520 receives the concentration of hydrogen peroxide from the hydrogen peroxide concentration sensor provided in the spray-type sterilization device 120.
  • the controller 520 applies abandonment time optimization according to various situations required in the field, such as minimizing abandonment time and occurrence of emergency situations.
  • the controller 520 applies negative pressure generation prevention according to the differential pressure occurring in the target space 110.
  • the controller 520 When the controller 520 recognizes an emergency situation, the controller 520 adjusts the distributor 720 so that air containing hydrogen peroxide is exhausted through the emergency discharge path (second outdoor air circulation path) 541, and the internal and external air circulation fan 710 operates at the maximum. By operating at RPM, the internal and external air circulation fan 710 operates at the maximum wind speed.
  • the ventilation circulation path 502 the scrubbing path (first outside air circulation path) 531, and the emergency discharge path (second outside air circulation path) 541 contain hydrogen peroxide.
  • the internal and external air circulation fan 710 is operated at the maximum RPM so that the internal and external air circulation fan 710 operates at the maximum air volume.
  • the controller 520 causes the air inlet fan 564 to operate at a preset RPM so that the air volume of the air inlet fan 564 is preset. Make sure to maintain air volume.
  • the controller 520 controls the distributor 720 to perform scrubbing not only through one scrubbing path (first outside air circulation path) 531, but also through two scrubbing paths, including an emergency discharge path (second outside air circulation path) 541. It can be performed simultaneously or selectively in three paths, including the branch path or the betting circulation path 502.
  • the controller 520 controls the distributor 720 to select a plurality of paths (internal circulation path 502), a scrubbing path (first external air circulation path) according to the hydrogen peroxide concentration (ppm) contained in the air taken in from the target space 110. ) (531), one or more paths among the emergency discharge path (second external air circulation path) (541)) can be selectively operated.
  • the controller 520 can control the distributor 720 to selectively control one or more paths among a plurality of paths for optimal efficiency. For example, if the controller 520 performs scrubbing on the target space 110 using only a single path, it takes approximately 3 hours and 30 minutes, and if it selectively uses one or more paths among a plurality of paths, it takes approximately 2 hours. It takes less than an hour.
  • the controller 520 When the hydrogen peroxide concentration (ppm) contained in the air taken in from the target space 110 is higher than a preset threshold, the controller 520 reduces the hydrogen peroxide concentration with high efficiency via the air circulation path 502.
  • the controller 520 takes a lot of time to lower the hydrogen peroxide concentration when using the internal circulation path 502. Therefore, the outside air is sent out to the target space 110 using the scrubbing path (first outside air circulation path) 531.
  • the controller 520 controls the distributor 720 to operate as an emergency discharge to quickly reduce the concentration of hydrogen peroxide contained in the air. Discharging the air containing hydrogen peroxide absorbed from the target space 110 through the emergency discharge path (second external air circulation path) 541 can most quickly reduce the hydrogen peroxide concentration. However, there must be no risk of safety accidents occurring in the area where the vent of the emergency discharge path (second outdoor air circulation path) 541 is located.
  • the controller 520 must use the internal circulation path 502 and the scrubbing path (first external air circulation path) 531 simultaneously in order to control the distributor 720 to lower the concentration of hydrogen peroxide contained in the air as quickly as possible after emergency discharge. .
  • circulation is used to promote the decomposition of hydrogen peroxide in the air, and the air containing hydrogen peroxide inside is discharged to the outside, and the outside air is sucked in to dilute the inside air.
  • the controller 520 operates centered on the first positive catalytic filter 508 when the hydrogen peroxide contained in the air is at a high concentration, and discharges air through the second positive catalytic filter 534 when the hydrogen peroxide contained in the air is low. can do.
  • the controller 520 can go to the center of circulation and use multiple paths at low concentrations.
  • the controller 520 adaptively adjusts the operating speed of the internal and external circulation fan 710 according to the concentration of hydrogen peroxide contained in the air, optimizing the aeration time, and preventing the generation of negative pressure.
  • the controller 520 receives the concentration of hydrogen peroxide from the hydrogen peroxide concentration sensor provided in the spray-type sterilization device 120.
  • the controller 520 applies abandonment time optimization according to various situations required in the field, such as minimizing abandonment time and occurrence of emergency situations.
  • the controller 520 applies negative pressure generation prevention according to the differential pressure occurring in the target space 110.
  • the differential pressure sensor 550 detects Sensing the differential pressure occurring at (110).
  • the differential pressure sensor 550 selectively operates under the control of the controller 520.
  • the differential pressure sensor 550 senses the differential pressure generated in the target space 110 when the air in the target space 110 is discharged to the outside due to the operation of the internal and external air circulation fan 710 under the control of the controller 520. .
  • the air filter 562 filters air when external air is drawn into the interior according to the operation of the air intake fan 564.
  • the air filter 562 includes a dust filter, a HEPA filter, and a Wolfa filter.
  • the air inlet fan 564 operates selectively under the control of the controller 520.
  • the air inlet fan 564 generates a differential pressure in the target space 110 when the air in the target space 110 is discharged to the outside due to the operation of the internal and external air circulation fan 710 under the control of the controller 520, thereby generating an external pressure in the target space 110. Air is sucked in through the air filter 562 and then exhausted to the target space 110.
  • Figure 8 is a diagram showing a safety ventilation aeration device using only an internal and external air circulation fan according to this embodiment.
  • the safety ventilation aeration device 130 shown in FIG. 8 consists of a ventilation circulation system, an emergency air discharge system, and an aeration air discharge system with one fan.
  • the safety ventilation exhaust device 130 removes the second outside air circulation fan 544 for emergency air discharge, the first outside air circulation fan 536 for scrubbed air discharge, and connects the first outside air valve 532 to the distributor 720. Change it to system.
  • the safety ventilation aeration device 130 shown in FIG. 8 includes an internal and external air circulation fan 710, a distributor 720, an internal circulation path 502, a first positive catalytic filter 508, and a scrubbing path (first external air circulation path).
  • first external air circulation path 531
  • second positive catalytic filter 534
  • emergency discharge path second outside air circulation path
  • controller 520
  • differential pressure sensor 550
  • air inlet path 561
  • air filter 562
  • Components included in the safety ventilation device 130 are not necessarily limited thereto.
  • the safety ventilation aeration device 130 shown in FIG. 8 sequentially arranges an internal and external air circulation fan 710, a distributor 720, a first positive catalytic filter 508, and a second positive catalytic filter 534.
  • the safety ventilation aerator 130 shown in FIG. 8 does not include the first outside air valve 532, the first outside air circulation fan 536, the second outside air valve 542, and the second outside air circulation fan 544.
  • the circulation path 502 arranges the first positive catalytic filter 508 after the distributor on a passage leading to the interior of the target space 110.
  • the internal and external air circulation fan 710 intakes air containing hydrogen peroxide (H 2 O 2 ) from the target space 110 and then delivers it to the inside and outside.
  • H 2 O 2 hydrogen peroxide
  • the distributor 720 distributes the air containing hydrogen peroxide so that it is exhausted through one or more of a plurality of preset paths under the control of the controller 520.
  • the plurality of paths include an internal circulation path 502, a scrubbing path (first outside air circulation path) 531, and an emergency discharge path (second outside air circulation path) 541.
  • the first positive catalytic filter 508 decomposes hydrogen peroxide using manganese dioxide, platinum, etc.
  • the scrubbing path (first external air circulation path) 531 arranges the second positive catalytic filter 534 on a passage leading to the outside of the target space 110.
  • the second positive catalytic filter 534 decomposes hydrogen peroxide using manganese dioxide, platinum, etc.
  • the emergency discharge path (second outside air circulation path) 541 has no filter disposed on a passage leading to the outside of the target space 110.
  • the controller 520 controls the distributor 720 to adjust the amount of air supplied from the internal and external air circulation fan 710 to adjust the ratio of the internal circulation amount and the external air circulation amount.
  • the controller 520 adaptively exhausts air containing hydrogen peroxide through one or more paths among a plurality of paths based on preset conditions.
  • the controller 520 controls the internal and external air circulation fan 710 so that air containing hydrogen peroxide passes through the first positive catalytic filter 508 and outputs filtered air, and the filtered air is circulated through the internal and external air circulation fan 710. It is vented into the interior of the target space 110 by wind pressure.
  • the controller 520 controls the internal and external air circulation fan 710 to allow air containing hydrogen peroxide to pass through the second positive catalytic filter 534 on the scrubbing path (first external air circulation path) 531 so that the hydrogen peroxide is scrubbed to 0 ppm. Allow air to be output.
  • the controller 520 causes the air scrubbed by the second positive catalytic filter 534 to be exhausted to the outside of the target space 110 by the wind pressure of the internal and external air circulation fan 710.
  • the controller 520 controls the internal and external air circulation fan 710 to exhaust the air containing hydrogen peroxide to the outside of the target space 110 via the emergency discharge path (second external air circulation path) 541.
  • the controller 520 adaptively adjusts the operating speed of the internal and external circulation fan 710 according to the concentration of hydrogen peroxide in the air containing hydrogen peroxide, optimization of aeration time, and prevention of negative pressure generation.
  • the controller 520 receives the concentration of hydrogen peroxide from the hydrogen peroxide concentration sensor provided in the spray-type sterilization device 120.
  • the controller 520 applies abandonment time optimization according to various situations required in the field, such as minimizing abandonment time and occurrence of emergency situations.
  • the controller 520 applies negative pressure generation prevention according to the differential pressure occurring in the target space 110.
  • the differential pressure sensor 550 senses the differential pressure generated in the target space 110 when air containing hydrogen peroxide is discharged from the target space 110 to the outside of the target space 110 due to the operation of the internal and external air circulation fan 710. do.
  • Figure 9 is a diagram showing a safety ventilation aeration device without applying a positive catalytic filter for scrubbing according to this embodiment.
  • the safety ventilation aeration device 130 shown in FIG. 9 consists of an internal air circulation system and an internal air exhaust system with one fan.
  • the safety ventilation device 130 is suitable when the target space 110 is outdoors.
  • the safety ventilation aeration device 130 is suitable for places where there is an external space where it is safe even if the internal air containing hydrogen peroxide is discharged.
  • the controller 520 controls the distributor 720 to adjust the amount of air supplied from the inside circulation fan 510 so that the ratio between the inside circulation amount and the outside air circulation amount is adjusted.
  • the safety ventilation aeration device 130 shown in FIG. 9 includes an internal and external air circulation fan 710, a distributor 720, an internal circulation path 502, a first positive catalytic filter 508, and an emergency discharge path (second external air circulation path). ) 541, controller 520, differential pressure sensor 550, air inlet path 561, air filter 562, air inlet valve 564, and air inlet fan 564.
  • Components included in the safety ventilation device 130 are not necessarily limited thereto.
  • the safety ventilation aeration device 130 shown in FIG. 9 sequentially arranges an internal and external air circulation fan 710, a distributor 720, and a first positive catalytic filter 508.
  • the safety ventilation aerator 130 shown in FIG. 9 includes a first outside air valve 532, a first outside air circulation fan 536, a second outside air valve 542, a second outside air circulation fan 544, and a second positive catalyst. Does not include filter 534.
  • the internal circulation path 502 forms a passage that filters air containing hydrogen peroxide and then exhausts it into the interior of the target space 110.
  • the betting circulation path 502 arranges the first positive catalytic filter 508 after the distributor 720 on a passage leading to the interior of the target space 110.
  • the internal and external air circulation fan 710 intakes air containing hydrogen peroxide (H 2 O 2 ) from the target space 110 and then delivers it to the inside and outside.
  • the distributor 720 distributes the air containing hydrogen peroxide so that it is exhausted through one or more of a plurality of preset paths under the control of the controller 520.
  • the plurality of paths include an internal air circulation path 502 and an emergency discharge path (second external air circulation path) 541.
  • the first positive catalytic filter 508 decomposes hydrogen peroxide using manganese dioxide, platinum, etc.
  • the emergency discharge path (second external air circulation path) 541 forms a path for discharging air containing hydrogen peroxide to the outside of the target space 110 without filtering or scrubbing.
  • the emergency discharge path (second outside air circulation path) 541 has no filter disposed on a passage leading to the outside of the target space 110.
  • the controller 520 adaptively exhausts air containing hydrogen peroxide through one or more paths among a plurality of paths based on preset conditions.
  • the controller 520 controls the internal and external air circulation fan 710 to allow air containing hydrogen peroxide to pass through the first positive catalytic filter 508 and output filtered air.
  • the controller 520 causes the air filtered by the first positive catalytic filter 508 to be exhausted back into the target space 110 by the wind pressure of the internal and external air circulation fan 710.
  • the controller 520 controls the internal and external air circulation fan 710 and the distributor 720 to allow air containing hydrogen peroxide to go to the outside of the target space 110 via the emergency discharge path (second external air circulation path) 541. Let it exhaust.
  • the differential pressure sensor 550 senses the differential pressure generated in the target space 110 when air containing hydrogen peroxide is discharged from the target space 110 to the outside of the target space 110 due to the operation of the internal and external air circulation fan 710. do.
  • Figure 10 is a diagram showing a safety ventilation device that separates internal circulation and external air circulation according to this embodiment.
  • the safety ventilation device 130 shown in FIG. 10 arranges the internal circulation system inside the target space 110, and arranges the external air circulation system and the air inlet system outside the target space 110.
  • the safety ventilation aeration device 130 shown in FIG. 10 includes an internal air circulation path 502, a first positive catalytic filter 508, an internal air circulation fan 510, a scrubbing path (first external air circulation path) 531, and a first external air circulation path 531.
  • Components included in the safety ventilation device 130 are not necessarily limited thereto.
  • a circulation fan 510 and a first positive catalytic filter 508 are disposed inside the target space 110.
  • Second positive catalytic filter, first outside air valve 532, first outside air circulation fan 536, controller 520, second outside air valve 542, second outside air circulation fan 544, differential pressure sensor 550, An air filter 562, an air inlet valve 564, and an air inlet fan 564 are disposed outside the target space 110.
  • Figure 11 is a diagram showing a safety ventilation aeration device using only an internal and external air circulation fan according to this embodiment.
  • the safety ventilation device 130 shown in FIG. 11 arranges the internal and external air circulation system inside the target space 110, and arranges the air inlet system outside the target space 110.
  • the safety ventilation aeration device 130 shown in FIG. 11 includes an internal and external air circulation fan 710, a distributor 720, an internal circulation path 502, a first positive catalytic filter 508, and a scrubbing path (first external air circulation path).
  • first external air circulation path 531
  • second positive catalytic filter 534
  • emergency discharge path second outside air circulation path
  • controller 520
  • differential pressure sensor 550
  • air inlet path 561
  • air filter 562
  • Components included in the safety ventilation device 130 are not necessarily limited thereto.
  • An internal and external air circulation fan 710, a distributor, and a first positive catalytic filter 508 are disposed inside the target space 110.
  • a second positive catalytic filter 534, a controller 520, a differential pressure sensor 550, an air filter 562, an air inlet valve 564, and an air inlet fan 564 are disposed outside the target space 110.
  • the safety ventilation aeration device 130 shown in FIG. 11 sequentially arranges an internal and external air circulation fan 710, a distributor 720, a first positive catalytic filter 508, and a second positive catalytic filter 534.
  • the safety ventilation aerator 130 shown in FIG. 11 does not include the first outside air valve 532, the first outside air circulation fan 536, the second outside air valve 542, and the second outside air circulation fan 544.
  • Figure 12 is a diagram showing a safety ventilation aeration device applying air conditioner intake and exhaust control according to this embodiment.
  • the safety ventilation device 130 shown in FIG. 12 operates in conjunction with an HVAC (Heating, Ventilation, Air Conditioning) system.
  • HVAC Heating, Ventilation, Air Conditioning
  • HVAC air conditioning
  • the safety ventilation aerator 130 forms a passage to operate in conjunction with an air conditioning (HVAC) system.
  • HVAC air conditioning
  • the air conditioning path 1270 is formed in a passage connected to the air conditioner intake port 1220 and the air conditioner exhaust port 1240.
  • the air conditioning path 1270 may be connected to the air conditioner intake port 1220.
  • a scrubbing path (first external air circulation path) 531 can be selectively formed.
  • the second positive catalytic filter 534 allows air containing hydrogen peroxide to pass through the opening and closing of the first outside air valve 532, and outputs air scrubbed with hydrogen peroxide to 0 ppm.
  • the first outside air circulation fan 536 draws in air containing hydrogen peroxide from the target space 110 under the control of the controller 520 and then delivers it to the outside.
  • the first opening and closing device 1212 is attached to the air conditioner intake port 1220.
  • the first switch 1212 is linked with the controller 520.
  • the second opening/closing device 1214 is attached to the intake/exhaust direct passage 1214.
  • the second switch 1214 is linked with the controller 520.
  • the third opening and closing device 1216 is attached to the air conditioner exhaust port 1240.
  • the third switch 1216 is linked with the controller 520.
  • the controller 520 of the safety ventilation aeration device 130 operates the first opening and closing device 1212 during the spraying process. ) is controlled to close, the second opening and closing device 1214 is controlled to open, the third opening and closing device 1216 is controlled to close, and the first external air valve 532 is controlled to close.
  • the controller 520 of the safety ventilation device 130 controls the first switch 1212 to close, the second switch 1214 to open, and the third switch 1216 during the resting process. Controlled to close, and controlled to close the first external air valve 532.
  • the controller 520 of the safety ventilation aeration device 130 controls the first opening and closing device 1212 to close, the second opening and closing device 1214 to close, and the third opening and closing device 1216 during the abandonment process. Controlled to open, and controlled to open the first external air valve 532.
  • the controller 520 of the safety ventilation device 130 controls the first switch 1212 to open, the second switch 1214 to close, and the third switch 1216 in an emergency situation. Controlled to open, and controlled to open the first external air valve 532.

Landscapes

  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

La présente invention concerne un procédé et un appareil d'épuration de ventilation sûre. Selon un mode de réalisation de la présente invention, un procédé et un appareil de ventilation d'épuration sûre pour éliminer de manière sûre et rapide de fines particules de peroxyde d'hydrogène contenues dans l'air à l'intérieur d'un espace cible qui a subi une stérilisation, l'air contenant de fines particules de peroxyde d'hydrogène étant retiré de manière adaptative et rapide par l'intermédiaire d'un ou de plusieurs trajets parmi une pluralité de trajets.
PCT/KR2023/000506 2022-11-28 2023-01-11 Procédé et appareil d'épuration de ventilation sûre WO2024117377A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2022-0161795 2022-11-28
KR20220161795 2022-11-28
KR10-2023-0000161 2023-01-02
KR20230000161 2023-01-02

Publications (1)

Publication Number Publication Date
WO2024117377A1 true WO2024117377A1 (fr) 2024-06-06

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PCT/KR2023/000506 WO2024117377A1 (fr) 2022-11-28 2023-01-11 Procédé et appareil d'épuration de ventilation sûre

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WO (1) WO2024117377A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160025211A (ko) * 2014-08-27 2016-03-08 주식회사 대신씨앤에스 강제 흡배기 방식의 흡연부스 환기시스템
KR20180123344A (ko) * 2017-05-08 2018-11-16 한국과학기술연구원 과산화수소 증기 멸균 및 제독 시스템
KR101967279B1 (ko) * 2018-03-26 2019-04-09 은성화학(주) 실내 공기청정 환기시스템
WO2021201382A1 (fr) * 2020-04-02 2021-10-07 (주)엠티이에스 Système de climatisation à pression négative pour le blocage d'une maladie infectieuse
KR20220146246A (ko) * 2021-04-23 2022-11-01 박동일 공동주택 음압시스템

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160025211A (ko) * 2014-08-27 2016-03-08 주식회사 대신씨앤에스 강제 흡배기 방식의 흡연부스 환기시스템
KR20180123344A (ko) * 2017-05-08 2018-11-16 한국과학기술연구원 과산화수소 증기 멸균 및 제독 시스템
KR101967279B1 (ko) * 2018-03-26 2019-04-09 은성화학(주) 실내 공기청정 환기시스템
WO2021201382A1 (fr) * 2020-04-02 2021-10-07 (주)엠티이에스 Système de climatisation à pression négative pour le blocage d'une maladie infectieuse
KR20220146246A (ko) * 2021-04-23 2022-11-01 박동일 공동주택 음압시스템

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