CN111981598A - Air exchange purification sterilization system in medical care room - Google Patents
Air exchange purification sterilization system in medical care room Download PDFInfo
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- CN111981598A CN111981598A CN202010937889.1A CN202010937889A CN111981598A CN 111981598 A CN111981598 A CN 111981598A CN 202010937889 A CN202010937889 A CN 202010937889A CN 111981598 A CN111981598 A CN 111981598A
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- generator
- medical care
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- purification
- sterilization
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to a ventilation, purification and sterilization system in a medical care room, which comprises a filter connected with an air outlet in the medical care room, a pulse sterilization room, a sterilization mechanism and a negative ion generation room, wherein the pulse sterilization room is sequentially connected with the filter, a pulse sterilization lamp is arranged in the pulse sterilization room, the sterilization mechanism comprises a hydrochloric acid tank, a sodium chlorite tank and a generator, the output ends of the hydrochloric acid tank and the sodium chlorite tank are connected with the generator through a premixing room arranged in the generator, the output end of the pulse sterilization room is connected with the generator through an air pump, and the output end of the upper end of the generator is connected with the negative ion generation room through a pipeline; the ventilation, purification and sterilization system provided by the invention can ensure the cleanliness of air discharged into the atmosphere after double dedusting, sterilization and disinfection are carried out on air in a medical care room, and the effect of killing viruses and bacteria in waste gas is improved.
Description
Technical Field
The invention belongs to the technical field of air purification, and particularly relates to a ventilation, purification and sterilization system for a medical care room.
Background
Hospitals are places where patients gather, and because of the large number of patients in hospitals, various pollutant gases are generated, particularly for patients suffering from infectious diseases, the exhaled gas contains transmitted bacteria, and if the gas is not effectively purified, the disease can be easily spread to a large extent, and the public safety is endangered. Therefore, in each department of a hospital, an exhaust system is required to periodically exhaust air to the outside and introduce fresh air to improve the quality of air in the department. However, the air discharged to the outside contains a large amount of infectious bacteria and infectious viruses generated by the breath of the patient, and the air discharged to the outside is also polluted. This also causes varying degrees of interference and impact on residents living around the hospital.
Disclosure of Invention
The invention aims to solve the problems in the background technology, and provides a ventilation, purification and sterilization system in a medical care room, which ensures the cleanliness of air discharged into the atmosphere after double dedusting, sterilization and disinfection are carried out on air in the medical care room, and improves the effect of killing viruses and bacteria in waste gas.
The purpose of the invention is realized as follows:
the utility model provides a medical care indoor air exchange purification sterilization system, includes the filter of connecting indoor air outlet, connects gradually the pulse sterilizing chamber, disinfection mechanism and the anion generation room of filter, be equipped with the pulse bactericidal lamp in the pulse sterilizing chamber, disinfection mechanism includes hydrochloric acid jar, sodium chlorite jar and generator, the output of hydrochloric acid jar, sodium chlorite jar is through locating the generator is connected to the room in advance in the generator, the output of pulse sterilizing chamber passes through the air pump and connects the generator, the upper end output end pipe connection anion generation room of generator.
Preferably, the inner surface of the pulse sterilizing chamber is sprayed with black matte paint, and the pulse sterilizing lamp is an inert gas lamp.
Preferably, a filter screen is arranged in the filter, and the filter screen is a PP (polypropylene) filter screen or a HEPA (high efficiency particulate air) filter screen.
Preferably, the bottom output end of the generator is connected to a waste liquid tank, and the middle output end of the generator is connected to the waste liquid tank through an overflow pipe.
Preferably, the bottom of the generator is provided with an aeration disc with small holes, and an output end pipeline of the air pump is connected to the bottom of the aeration disc.
Preferably, the input end of the filter is connected with an indoor air outlet through a fan, and the fan adopts a brushless fan.
Preferably, the hydrochloric acid tank, the sodium chlorite tank and the generator are respectively provided with a one-way valve and an electromagnetic metering pump connected with the PLC controller, the hydrochloric acid tank and the sodium chlorite tank are respectively provided with a liquid level meter, and the negative ion generating chamber is internally provided with a chlorine dioxide concentration sensor connected with the PLC controller.
Preferably, the output end of the top end of the generator is connected with the negative ion generating chamber through a buffer tank, and a second chlorine dioxide concentration sensor connected with the PLC is arranged in the buffer tank.
Preferably, the generator is further connected with a quenching mechanism, the quenching mechanism comprises a quenching tank connected with the generator through a pipeline, a water inlet pipe is arranged at the upper part of the quenching tank, a water outlet pipe and a vent valve are arranged at the lower end of the quenching tank, and the quenching tank is provided with a liquid level meter.
Preferably, the sterilization efficiency η of the pulse sterilization chamber to the air satisfies the following conditions:
η=1-C2/C1，C1concentration (cfu/m) of suspended bacteria in air at input end of pulse sterilizing chamber3），C2Concentration (cfu/m) of suspended bacteria in air at output end of pulse sterilizing chamber3）。
Preferably, the concentration C of the planktonic bacteria in the air at the input end and the output end in the pulse sterilization chamber satisfies the following conditions:
C=N×105and/vt, N is the total colony count (cfu) on the six-stage sampling plate, v is the flow rate of the sampled air (L/min), and t is the sampling time (min).
Preferably, the killing effect E of the disinfection mechanism on the microbial spores meets the following requirements:
E=log（N1/N2) In which N is1The number of bacterial colonies (cfu), N, obtained by counting live bacteria when the disinfection mechanism is not disinfected2The number of bacterial colonies (cfu) obtained by counting live bacteria after disinfection by a disinfection mechanism.
Compared with the prior art, the invention has the beneficial effects that:
1. when the strong pulse light shines a treated object, visible light, infrared rays and ultraviolet spectrums cooperatively act on microorganisms to destroy the nucleic acid structure of the microorganisms and also destroy proteins, cell membranes and other intracellular structures in cells of the microorganisms to a certain degree so as to kill the microorganisms, gaseous chlorine dioxide generated by a disinfection mechanism has a killing effect on epidemic viruses such as spores and hepatitis B viruses, algae, sulfate reducing bacteria, fungi and the like, indoor air is subjected to pulse disinfection and chlorine dioxide disinfection after being dedusted by a filter, and finally, the dedusting and sterilizing effects are achieved through the action of an anion generator in an anion generating chamber.
2. The invention provides a ventilation, purification and sterilization system in a medical care room.A generator is provided with a special aeration disc with small holes, an air pump adds air into the generator in a blowing way, the air is changed into small bubbles from the small holes in the aeration disc, and chlorine dioxide gas is blown out from reaction liquid.
3. According to the ventilation, purification and sterilization system for the medical care room, the content of chlorine dioxide in gas blown out from the generator after aeration is high, and the gas is buffered and diluted by air in the buffer tank and then enters the negative ion generation room.
Drawings
Fig. 1 is a schematic structural view of a ventilation, purification and sterilization system in a medical care room according to the present invention.
Fig. 2 is a schematic view of a heating chamber of the ventilation, purification and sterilization system in a medical care room.
In the figure: 1. a filter; 2. a pulse sterilizing chamber; 3. a pulse germicidal lamp; 4. an air pump; 5. a hydrochloric acid tank; 6. a sodium chlorite tank; 7. a waste liquid tank; 8. a generator; 9. a buffer tank; 10. a negative ion generating chamber; 11. a PLC controller; 12. a premixing chamber; 13. an aeration disc; 14. and (4) an overflow pipe.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
With reference to fig. 1 and 2, a ventilation, purification and sterilization system for medical care rooms comprises a filter 1 connected with an indoor air outlet, a pulse sterilization room 2, a sterilization mechanism and an anion generation room 10 which are sequentially connected with the filter 1, wherein indoor air is sterilized by chlorine dioxide sequentially passing through the pulse sterilization room 2 and the sterilization mechanism after being dedusted by the filter 1, and finally, the double dedusting and sterilization effects are achieved through the action of an anion generator in the anion generation room 10.
Be equipped with the filter screen in the filter 1, the filter screen adopts PP polypropylene filter screen or HEPA filter screen, and the HEPA filter screen filter material is superfine glass fiber, and the system makes indoor formation negative pressure through the fan, and the fan uses brushless fan, can not produce sporadic electric spark, and motor running friction is little, has reduced the interference to signal transmission between each module of clarifier.
The disinfection mechanism comprises a hydrochloric acid tank 5, a sodium chlorite tank 6 and a generator 8, wherein the output ends of the hydrochloric acid tank 5 and the sodium chlorite tank 6 are connected with the generator 8 through a premixing chamber 12 arranged in the generator 8, the output end of the pulse disinfection chamber 2 is connected with the generator 8 through an air pump 4, the upper end output end of the generator 8 is connected with a negative ion generating chamber 10 through a pipeline, the bottom output end of the generator 8 is connected with a waste liquid tank 7, the middle end output end of the generator 8 is connected with the waste liquid tank 7 through an overflow pipe 14, an aeration disc 13 with small holes is arranged at the bottom of the generator 8, and the output end of the air pump 4 is connected to the bottom of the aeration disc 13 through a pipeline.
The raw material liquid is pumped into the reactor through two adjustable electromagnetic metering pumps by a hydrochloric acid tank and a sodium chlorite tank, a liquid level meter is arranged in the storage tank, the storage amount of the raw material in the raw material storage tank can be displayed, so that the raw material liquid can be supplemented in time, and the raw material liquid is prevented from flowing backwards by a check valve in a pipeline.
Raw material liquid is squeezed into the premixing chamber through the air pump and is mixed and reacted, then the bottom that gets into the chlorine dioxide generator continues to react and the aeration blows off, and the waste liquid discharges in the waste liquid jar, and the well upper portion of generator is equipped with the overflow pipe, and when the liquid level was too high in the reactor, the waste liquid can be discharged to the waste liquid jar in through the overflow mouth.
The content of chlorine dioxide in the gas blown out from the generator after aeration is higher, the gas is buffered and diluted in the buffer tank by air and then enters the negative ion generating chamber, the controller monitors the concentration of chlorine dioxide in the generator and the buffer tank, when the concentration of chlorine dioxide in any one of the two devices exceeds 8 percent, or the gas temperature is overhigh or power is cut off, the electromagnetic valve at the lower end of the quenching tank is opened, the water in the quenching tank rapidly enters the generator, and the reaction liquid in the generator is cooled and diluted, so that the reaction is stopped or slowed down, and the safety is ensured.
The negative ion generator in the negative ion generating chamber generates a large amount of positive ions and negative ions, and the negative ions enable small molecular particles suspended in the air to be combined into molecular groups for sedimentation. In addition, a part of positive ions and negative ions are neutralized by positive and negative charges in the air, and the energy is released instantly to trigger the structural denaturation of protein, thereby achieving the functions of dust removal and sterilization
Example 2
The pulse sterilizing chamber 2 is internally provided with a pulse sterilizing lamp 3, the inner surface of the pulse sterilizing chamber 2 is sprayed with black matt varnish, the pulse sterilizing lamp 3 adopts an inert gas lamp, the inert gas lamp adopts a pulse xenon lamp, when the pulse strong light shines a processed object, visible light, infrared rays and ultraviolet spectrums cooperatively act on microorganisms, the nucleic acid structure of the microorganisms is damaged, meanwhile, proteins, cell membranes and other intracellular structures in the cells of the microorganisms are damaged to a certain degree, so that the microorganisms are killed, and the pulse strong light has obvious sterilizing effects on mould, gram-positive pathogenic bacteria, gram-negative pathogenic bacteria, aerobic bacterial spores, fungal conidia, staphylococcus aureus, bacillus subtilis, saccharomycetes and the like.
Utilize the Anderson sample thief to respectively to the air of flowing through in the section of disinfecting upper and lower reaches, test this pulse sterilizing equipment to the efficiency of disinfecting of once only passing through the air current, the indoor efficiency eta of disinfecting to the air of pulse sterilization satisfies: eta =1-C2/C1，C1Concentration (cfu/m) of suspended bacteria in air at input end of pulse sterilizing chamber3），C2Concentration (cfu/m) of suspended bacteria in air at output end of pulse sterilizing chamber3），
The concentration C of planktonic bacteria in the air of the input end and the output end in the pulse sterilization chamber meets the following requirements: c = N × 105And the V/t, N is the total colony count (cfu) on the six-stage sampling flat plate, v is the flow rate (L/min) of sampled air, t is sampling time (min), the smaller the section of the air pipe is, the higher the pulse strong light irradiation intensity received by the air in the air pipe is, the higher the sterilization efficiency is, and the higher the sterilization efficiency is when the air flow rate flowing through the pulse sterilization chamber is 2-4m/s under the condition of the same air speed.
Example 3
Be equipped with the venturi mixer in the buffer tank, dilution air gets into from the left side of venturi mixer, chlorine dioxide jets into the mixer with the equidlow flow respectively from choke inlet both ends in, the gas after the mixture flows out from the right, chlorine dioxide gas jets into the mixer with perpendicular to air velocity direction from the slotted hole in, with the air impact after-mixing, chlorine dioxide gas jets into the mixer through the structure of symmetry formula like this, can spray whole pipeline cross section, realize chlorine dioxide and air homogeneous mixing, strengthened the mixed effect.
The effect E of killing the microbial spores by the disinfection mechanism satisfies the following conditions: e = log (N)1/N2) In which N is1The number of bacterial colonies (cfu), N, obtained by counting live bacteria when the disinfection mechanism is not disinfected2The number of bacterial colonies (cfu) obtained by counting live bacteria after disinfection by the disinfection mechanism, the gaseous chlorine dioxide has obvious killing effect on spores and pollution in the space, and the killing effect is increased by the pretreatment chamber and the buffer tank.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents and substitutions made within the scope of the present invention should be included.
Claims (8)
1. The utility model provides an indoor purification sterilization system of taking a breath of doctorsing and nurses which characterized in that: including filter (1), the pulse sterilizing chamber (2), the disinfection mechanism and the anion generation room (10) that connect gradually filter (1) of connecting indoor air outlet, be equipped with pulse bactericidal lamp (3) in pulse sterilizing chamber (2), the disinfection mechanism includes hydrochloric acid jar (5), sodium chlorite jar (6) and generator (8), generator (8) are connected through pre mixing room (12) of locating in generator (8) to the output of hydrochloric acid jar (5), sodium chlorite jar (6), generator (8) are connected through air pump (4) to the output of pulse sterilizing chamber (2), the upper end output end pipe connection anion generation room (10) of generator (8).
2. The ventilation, purification and sterilization system for medical care rooms according to claim 1, wherein: the inner surface of the pulse sterilizing chamber (2) is sprayed with black matt varnish, and the pulse sterilizing lamp (3) adopts an inert gas lamp.
3. The ventilation, purification and sterilization system for medical care rooms according to claim 1, wherein: the filter is characterized in that a filter screen is arranged in the filter (1), and the filter screen is a PP (polypropylene) filter screen or a HEPA (high efficiency particulate air) filter screen.
4. The ventilation, purification and sterilization system for medical care rooms according to claim 1, wherein: the bottom output end of the generator (8) is connected to the waste liquid tank (7), and the middle output end of the generator (8) is connected with the waste liquid tank (7) through an overflow pipe (14).
5. The ventilation, purification and sterilization system for medical care rooms according to claim 1, wherein: an aeration disc (13) with small holes is arranged at the bottom of the generator (8), and an output end pipeline of the air pump (4) is connected to the bottom of the aeration disc (13).
6. The ventilation, purification and sterilization system for medical care rooms according to claim 1, wherein: the input end of the filter (1) is connected with an indoor air outlet through a fan, and the fan adopts a brushless fan.
7. The ventilation, purification and sterilization system for medical care rooms according to claim 1, wherein: still include PLC controller (11), all be equipped with the check valve on the connecting tube of hydrochloric acid jar (5), sodium chlorite jar (6) and generator (8) and the electromagnetism measuring pump of being connected with PLC controller (11), all be equipped with the level gauge in hydrochloric acid jar (5) and the sodium chlorite jar (6), be equipped with the chlorine dioxide concentration sensor who is connected with the PLC controller in anion generator room (10).
8. The ventilation, purification and sterilization system for medical care rooms according to claim 7, wherein: the top output end of the generator (8) is connected with a negative ion generating chamber (10) through a buffer tank (9), and a chlorine dioxide concentration sensor connected with a PLC (programmable logic controller) controller (11) is arranged in the buffer tank (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010937889.1A CN111981598A (en) | 2020-09-09 | 2020-09-09 | Air exchange purification sterilization system in medical care room |
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| CN202010937889.1A CN111981598A (en) | 2020-09-09 | 2020-09-09 | Air exchange purification sterilization system in medical care room |
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