CN111207462A - Sterilization and disinfection method and system - Google Patents

Sterilization and disinfection method and system Download PDF

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Publication number
CN111207462A
CN111207462A CN202010113552.9A CN202010113552A CN111207462A CN 111207462 A CN111207462 A CN 111207462A CN 202010113552 A CN202010113552 A CN 202010113552A CN 111207462 A CN111207462 A CN 111207462A
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container
air
sterilization
filtering
disinfection
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Inventor
袁一军
叶立英
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Hunan Yali Technology Development Co ltd
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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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/18—Radiation
    • A61L9/20—Ultra-violet radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • A61L9/22—Ionisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0071—Electrically conditioning the air, e.g. by ionizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/02—Moistening ; Devices influencing humidity levels, i.e. humidity control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0608—Filter arrangements in the air stream
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/30—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by ionisation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/14—Filtering means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/22—Treatment by sorption, e.g. absorption, adsorption, chemisorption, scrubbing, wet cleaning
    • 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 present invention relates to a method and a system for sterilizing and disinfecting air, in particular to a method and a system for ensuring that the air has enough processing time to process the air through a container with a certain volumeThe gas sterilization and disinfection method and system has the advantages that the minimum volume of the container is satisfied:

Description

Sterilization and disinfection method and system
Technical Field
The invention relates to an air sterilization and disinfection method and system, in particular to a sterilization and disinfection method and system for ensuring sufficient air treatment time through a container with a certain volume, and a sterilization and disinfection method and device for intercepting pathogenic bacteria through a filtering and adsorbing device and then killing the intercepted pathogenic bacteria.
Background
At present, air sterilization and disinfection mainly adopts two modes, one mode is that a room is used as a container to fumigate or spray medicines, so that special requirements on objects in the room are inevitably caused, such as high temperature resistance of the objects, contact between the objects and the medicines and the like are avoided, and meanwhile, people, animals and the like are required to leave room price. Another method is to use a special air treatment device, such as a sterilization section of an air sterilizer or an air conditioning cabinet, through which air is continuously passed, but which does not have sufficient treatment time, resulting in inefficient sterilization.
Meanwhile, most of the existing air-conditioning boxes do not have the sterilization and disinfection functions, so that an air-conditioning system is a way for transmitting germs, and the safe operation of an air conditioner is not facilitated.
The existing dehumidifier does not have the sterilization and disinfection function, a condenser of the dehumidifier generates a large amount of heat and high-temperature air, and the condenser can be completely fully utilized for sterilization and disinfection heat treatment, but the air temperature heated by the condenser of the existing dehumidifier is generally about 50 ℃, the sterilization and disinfection effect is not strong, the air temperature improvement effect can be improved by reducing the air volume or increasing the air temperature by increasing an auxiliary heater, in addition, a filtering and adsorbing device is required to be added at the downstream of the reheater to adsorb pathogenic bacteria, and the pathogenic bacteria treatment time is increased.
In view of the above problems, the present invention provides a method and a system for sterilizing and disinfecting air, which ensure sufficient time for treating germs and effectively realize sterilization and disinfection of air.
Disclosure of Invention
The invention aims to provide an air sterilization and disinfection method and system aiming at the defects of the prior art.
The purpose of the invention is realized by the following technical scheme:
an air sterilization and disinfection method comprises introducing air to be treated into a container through an inletIn the container, the container is sealed, the air in the container is subjected to sealed sterilization and disinfection treatment, then the outlet of the container is opened, the treated air is discharged, and the process is repeated for a plurality of times, so that all the air to be treated is sterilized and disinfected; or the container is not sealed, and the air continuously passes through the container to be sterilized and disinfected and then is discharged; the sterilization and disinfection treatment comprises one or more of the following modes, namely heat treatment, solution spraying, ultraviolet lamp illumination and plasma sterilization treatment; the air entering into the container and the air discharging out of the container can be driven by a natural convection mode or a fan and a compressor; the container is a fixed container or a container with variable volume; the minimum volume of the container should satisfy:
Figure BDA0002390802490000021
wherein:
v is the volume of the container,
t is the time required for the process to complete,
t is the time the process air is processed in the vessel,
q is the volume of air that needs to be treated,
c is the compression ratio of the air in the container and the air outside the container.
Preferably, the heat required for the heat treatment is derived from the heat released from the heat storage material.
Further, the sterilization treatment includes a heat treatment, and the treated air is cooled by a heat exchanger and preheated to the air introduced into the container when being discharged.
A method for sterilizing and disinfecting air comprises introducing air to be treated into a container with an air conditioning device, sealing the container, sterilizing and disinfecting the air and the device in the container, opening an outlet of the container, discharging the treated air, and repeating the above steps for multiple times to sterilize and disinfect the air to be treated; or the container is not sealed, and the air continuously passes through the container to be sterilized and disinfected and then is discharged; the sterilization and disinfection treatment comprises one or more of the following modes, namely heat treatment, solution spraying, ultraviolet lamp illumination and plasma sterilization treatment; the air entering into the container and the air discharging out of the container can be driven by a natural convection mode or a fan and a compressor; the container is a fixed container or a container with variable volume, and the air conditioning device comprises one or more of cooling, dehumidifying, cooling dehumidifying, heating, humidifying, heating humidifying and filtering and absorbing devices.
The container can also be realized by using an air-conditioning box, namely the existing air-conditioning box can be improved into the air-conditioning box with the sterilization and disinfection functions, compared with the method of the container with the minimum volume, the method can fully utilize the surface of an air-conditioning device, such as the surface of a surface cooler of a finned tube heat exchanger, to intercept pathogenic bacteria in the air and increase the virus treatment time, and most of air-conditioners comprise various filtering and adsorbing devices with different efficiencies, and can utilize the device to adsorb and filter the pathogenic bacteria.
If heat treatment is adopted, when higher temperature is needed, such as 100 ℃, the temperature resistance requirement of materials, such as an air conditioner panel, needs to be considered in the air conditioning box, and when lower temperature is needed, such as lower than 60 ℃, the existing air conditioning box can meet the requirement without change.
Further, the air conditioning device is a filtering adsorption device and a cooling dehumidification heat exchanger, the sterilization and disinfection are realized through heat treatment, the cooling dehumidification heat exchanger is an evaporator of a compression refrigeration system, and part or all of heat treatment heat comes from a condenser of the compression refrigeration system.
Further, the sterilization treatment includes a heat treatment, and the treated air is cooled by a heat exchanger and preheated to the air introduced into the container when being discharged.
An air sterilization and disinfection system comprises a container and a sterilization and disinfection device, wherein the sterilization and disinfection device is arranged in the container or connected with the container, the sterilization and disinfection device comprises one or more of a heat treatment device, a solution spraying device, an ultraviolet lamp and plasma, the solution spraying system comprises a pump and a spraying pipe, and the spraying pipe is arranged in the container. The container is a variable volume container or a fixed volume container, and is provided with an air inlet, an air outlet or a valve. The minimum volume of the container should satisfy:
Figure BDA0002390802490000031
further, the solution spraying system also comprises a solution heater or a filler for heating the solution, wherein the filler is arranged in the container and below the spraying pipe.
Further, the air sterilization and disinfection system also comprises an air driving device, wherein the air driving device comprises a fan or a compressor and is arranged at the inlet or the outlet of the container.
The air sterilizing and disinfecting system is characterized by comprising a container, an air conditioning device and a sterilizing and disinfecting device, wherein the air conditioning device is arranged in the container and comprises one or more of cooling, dehumidifying, cooling dehumidifying, heating, humidifying, heating humidifying and filtering and adsorbing devices. The sterilization and disinfection device is arranged in the container or connected with the container, the sterilization and disinfection device comprises one or more of a heat treatment device, a solution spraying device, an ultraviolet lamp and plasma, the solution spraying system comprises a pump and a spraying pipe, and the spraying pipe is arranged in the container. The container is a variable volume container or a fixed volume container, and is provided with an air inlet and an air outlet.
Further, the system also comprises a fan which is arranged at the upstream or the downstream of the filtering and adsorbing device.
Further, the system is connected to other equipment, and fans of the other equipment are used to drive air through the device.
Furthermore, the system also comprises a compressor, a compression refrigeration system consisting of a throttle valve, a refrigerant pipeline, an evaporator and a condenser, and a fan for driving air to flow; the air conditioning device comprises a filtering adsorption device and a cooling dehumidification heat exchanger, the sterilization and disinfection device is a heater, the cooling dehumidification heat exchanger is an evaporator of a compression refrigeration system, and the heater is a condenser of the compression refrigeration system; the evaporator is located at the upstream of the condenser, the filtering and adsorbing device is located at the downstream of the condenser, the heat required by the sterilization and disinfection heat treatment is provided, and the dehumidification function is realized.
Further, the system contains a plurality of filtration adsorption equipment and the degassing unit that disinfects of arranging in the container, and filtration adsorption equipment and the degassing unit one-to-one that disinfects constitute a set of, and every filtration adsorption equipment of group and the degassing unit that disinfects that corresponds pass through the baffle and separate, and the both sides or one side of filtering adsorption equipment and degassing unit that disinfects are equipped with the guide rail, set up the valve plate on the guide rail, and the width of valve plate is a filtration adsorption equipment's width, and a plurality of positions are switched to the valve plate, and every position seals the filtration adsorption equipment that corresponds and the degassing unit that disinfects that corresponds.
Furthermore, the system also comprises a fan, a partition plate and a conveying structure; the air conditioning device is a filtering and adsorbing device; the container is divided into two parts by a partition board, the two parts are respectively a closed chamber and a filtering and adsorbing chamber provided with a container inlet and a container outlet, the sterilizing and disinfecting device is arranged in the closed chamber, the conveying structure crosses the partition board and is arranged in the container, the filtering and adsorbing device is arranged on the conveying structure, the filtering and adsorbing device passes through an opening on the partition board and circularly rotates between the closed chamber and the filtering and adsorbing chamber, pathogenic bacteria in air are adsorbed in the filtering and adsorbing chamber, the adsorbed pathogenic bacteria are killed by the sterilizing and disinfecting device in the closed chamber, and air is driven by a fan to pass through the filtering and adsorbing device.
Furthermore, the sterilization and disinfection device comprises a heat treatment device, the system also comprises a heat exchange device, the heat exchange device is arranged outside the container, a cold side inlet of the heat exchange device is an inlet of air to be treated, a cold side outlet of the heat exchange device is connected with an inlet of the container, a hot side inlet of the heat exchange device is connected with an outlet of the container, and a hot side outlet of the heat exchange device is an outlet of the treated air; or the heat exchange device is arranged in the container, a cold side inlet of the heat exchange device is connected with an inlet of the container, a hot side outlet of the heat exchange device is connected with an outlet of the container, and the cold side outlet and the hot side inlet are communicated with the inside of the container.
Further, the sterilization and disinfection device is a solution spraying system, the filtering and adsorption device is a filter, and as a preferred scheme, the filtering material of the filter is a membrane-coated filtering material.
The invention has the beneficial effects that: the method and the system can effectively improve the sterilization and disinfection efficiency, prevent the germ from diffusing, prevent infectious diseases, ensure the safety of buildings, public places and vehicles and the normal operation of an air conditioning system, and are beneficial to the health of people.
Drawings
FIG. 1 shows a sterilization and disinfection method using a container and utilizing natural convection
FIG. 2 shows a sterilization and disinfection method using a container and using a mechanical device to drive air
FIG. 3 shows a sterilization and disinfection method using a container and including heat treatment and heat recovery
FIG. 4 illustrates a method of sterilization using a solution using a container
FIG. 5 shows a method of sterilization by filtration and adsorption and heat treatment
FIG. 6 shows the way of sterilization by using a filtering and adsorbing device and a solution
FIG. 7 shows the sterilization and disinfection method with the filtering and adsorbing device and the valve
FIG. 8 is a view showing sterilization and disinfection involving a plurality of filtering and adsorbing means and a multi-position valve
FIG. 9 is a diagram of a sterilization and disinfection system including a plurality of filtering and adsorbing devices and a multi-position valve
FIG. 10 shows the sterilization and disinfection method combining heat exchanger and heating device
FIG. 11 is combined in the manner of FIG. 5
Fig. 12 shows the combination of the method of fig. 10.
FIG. 13 shows the way of sterilization and disinfection by a dehumidifier
Fig. 14 shows a method of sterilization and disinfection by using a dehumidifier with auxiliary heating.
FIG. 15 shows the sterilization and disinfection method using a rotary filtering and adsorbing device
Detailed Description
The invention provides an air sterilization and disinfection method, which can prolong the sterilization and disinfection time of the air to be treated by introducing the air to be treated into a container, thereby effectively improving the sterilization and disinfection efficiency. The containerThe minimum volume of the device should satisfy:
Figure BDA0002390802490000051
when the filtering and adsorbing device is arranged in the container, the filtering and adsorbing device adsorbs bacteria and viruses in the air, the bacteria and the viruses in the air stay on the filtering and adsorbing device and are not discharged out of the container along with the air, and the bacteria and the viruses staying on the filtering and adsorbing device have enough time for sterilization and disinfection, so that the container has no minimum volume requirement on the volume of the container. The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, an air sterilization and disinfection system 100 comprises a container 101 and a sterilization and disinfection device 102, the sterilization and disinfection device 102 is disposed in the container 101 or connected to the container 101, and the sterilization and disinfection device 102 may be a heat treatment device, a solution spraying device, an ultraviolet lamp, a plasma, or the like. Wherein the heat treatment device comprises an electric heating device and the like. When the solution is adopted for spraying, the solution can adsorb partial bacteria and viruses, and the volume of a corresponding container is relatively small.
The container 101 has air ports 105, 104 with valves 107, 106.
When the air treatment is performed in a sealing treatment manner described below, the valve is used to seal the container 101, and the valve may not be installed when the air continuously passes through the container 101.
So-called closed treatment, i.e. air I to be treatedAEnters the container 101 through the container inlet 104, seals the container 101, and the air in the container is sterilized and disinfected through the sealed sterilization and disinfection treatment, and then the container outlet valve 107 is opened, and the treated air is discharged OARepeating the above process for many times to sterilize and disinfect all the air to be treated.
Alternatively, the container 101 may not be sealed, and air is continuously discharged through the container 101 after sterilization; the waste gas is discharged after one or more of the following modes of heat treatment, solution spraying, ultraviolet lamp and plasma treatment.
The entry of air into the container 101 and its exit from the container in fig. 1 is by natural convection, and may also be driven by a fan and compressor as shown in fig. 2, 3 and 4.
The container 101 is a fixed container or a variable volume container, and as the larger the volume of the processing container is, the more beneficial the air processing is, but the larger the volume of the container is, the larger the size of the equipment is, the transportation and placement are not facilitated, and the variable volume container can be adopted, that is, the volume of the system is increased when the system works, and is not worked, that is, the volume can be reduced by folding, contracting and the like when the system is idle or transported, and typically the variable volume container comprises an air bag, a balloon and other structures, or a foldable box body and the like.
In order to ensure that the air to be treated is treated at least once through the system and that sufficient treatment time is ensured, the volume of the container in operation should be such that:
Figure BDA0002390802490000052
wherein:
v is the volume of the container,
t is the time required for the process to complete,
t is the time the process air is processed in the vessel,
q is the volume of air that needs to be treated,
c is the compression ratio of the air in the container and the air outside the container.
When the air is subjected to the sealing treatment, it is assumed that the time for introducing and discharging the air into and from the container is negligible compared with the time for the air sealing treatment.
Assume a room with a volume of 60m3I.e. 60m of air to be treated3Adopting high-temperature treatment at 110 ℃, adopting new coronavirus to be inactivated, assuming that the closed treatment time in the container is 1 minute, the whole treatment time is 1 hour, and simultaneously assuming that a natural convection mode or a low-pressure fan is adopted to drive air, the compression ratio is 1 or very close to 1, the minimum volume of the required container 101 is 1m3. If a compressor is used, the minimum volume of the container 101 required is 0.5m, assuming a volumetric compression ratio of 23。
Also shown in fig. 1 is a heat storage material 103 in the container, and wheels 108, which indicate that the system can move process air, and can be heated without accessing external energy during the process, and can be heated by heat released from the heat storage material 103, thus facilitating the moving process.
In addition, when a heat treatment apparatus is used as the sterilization and disinfection apparatus 102, it is preferable that an insulating material is provided on the inner wall of the container 101 to save energy and improve sterilization and disinfection effects.
Fig. 2 differs from fig. 1 by the addition of an air-driven device 109, i.e. a fan or compressor, while fig. 2 shows a solution spraying system comprising a pump 110, a pipe 111 and a sprayer 112, the pump 110 driving the solution in the bottom of the vessel through the pipe 111 to be sprayed through the sprayer 112 into contact with the process air, which can be treated in a closed manner or with air continuously passing through the process.
The solution is a solution capable of sterilizing germs in the air to be treated, and can be selected according to germs to be eliminated, and the solution comprises various salt solutions, such as calcium chloride, lithium bromide, potassium formate and the like, alcohol, hydrogen peroxide, various disinfection solutions and the like.
Fig. 3 is different from fig. 2 in that a heat exchange device 113 is added and connected with the container inlets and outlets 105 and 104 through a pipeline 114, the air to be treated firstly enters the heat exchange device 113 to exchange heat with the treated air, the inlet air is heated by the waste heat of the outlet hot air and then enters the container 101 for sterilization, and the process simultaneously reduces the exhaust temperature, thereby saving energy and reducing the influence on the environment outside the container. The heat exchange device may be a dividing wall type heat exchanger or a split type heat exchanger, the split type heat exchanger is composed of two heat exchangers, heat is exchanged between the two heat exchangers through circulation of circulating liquid, namely, after the circulating fluid obtains heat in one heat exchanger, heat is released in the other heat exchanger, and the dividing wall type heat exchanger is shown in fig. 3.
Fig. 4 shows a solution spraying system using a filler 115, which can enhance the treatment effect by increasing the contact of the solution with air through the filler 115, and fig. 4 is also provided with a solution heater 116 for sterilization and disinfection by the simultaneous action of the solution and high temperature.
The system 200 shown in fig. 5 comprises a filtering and adsorbing device 204, a heater 203, namely a sterilizing and disinfecting device, a shell 201, a heat exchanger 202 and a partition 205, wherein the heater 203 is positioned at the upstream of the filtering and adsorbing device 204, and the system also comprises a fan which is arranged at the upstream or the downstream of the filtering and adsorbing device 204 or is connected with other equipment, and air is driven to pass through the device by the fan of the other equipment.
The air Ia to be treated is heated by waste heat through one side of the heat exchanger, then is heated through the heater 203, then passes through the filtering and adsorbing device 204 to adsorb pathogenic substances in the filtered air, the pathogenic substances on the filtering and adsorbing device 204 are treated by hot air to realize sterilization, finally the air is cooled through the other side of the heat exchange device, and finally the air is discharged out of the Oa.
The sterilization and disinfection treatment may be a continuous online treatment or a discontinuous offline treatment, as shown in fig. 7, 8 and 9.
The heat exchanger 202 and heater 203 of fig. 5 can also be combined as shown in fig. 10, i.e., the combined heat exchanger 209 includes a heater 2091, otherwise similar to fig. 5.
The continuous on-line treatment of the system comprising the filtering and adsorbing device 204 can be performed in other ways besides the sterilization and disinfection way as shown in fig. 5, such as solution spraying and the like, and in this case, a heat exchanger is not needed, as shown in fig. 6.
The container in fig. 5 may also use an air conditioning cabinet, and an air conditioning device including an air cooling dehumidification device, a heating and humidifying device, etc. is arranged in the container, and if the air conditioning device includes a heating device, the heating device may also be used to achieve heat treatment sterilization.
In addition, the heat exchanger 202 can be placed outside the container, the cold-side inlet of the heat exchanger 202 is an inlet of air to be treated, the cold-side outlet is connected with the upstream of the heat treatment device, the hot-side inlet of the heat exchanger 202 is connected with an outlet of the container, and the hot-fluid outlet is an outlet of the treated air, in this case, the heat exchanger 202 can adopt a dividing wall type heat exchanger or a separating type heat exchanger.
The system 220 shown in fig. 6 comprises a housing 201, a filter 206, a sprayer 207 and a fan 208, the pumps required for solution spraying not being shown.
The air Ia to be treated passes through the sprayer 207 under the driving of the fan and then passes through the filter 206, the filter 206 traps the germs in the air, and the germs in the air are filtered and then discharged, namely Oa.
The solution spraying is used for sterilizing and disinfecting germs, and the solution spraying can be continuous spraying or intermittent spraying.
The filter 206 has a membrane filter material comprising a membrane 2062 and a membrane substrate 2061, and the membrane 2062 may be a hydrophobic membrane, such as a teflon membrane, to prevent the solution from passing through the membrane into the exhaust air.
The system 300 of fig. 7 comprises a filter-adsorber 302, valves 304A and 304B, a sterilizer 301, a housing 305 and a blower 303, the valves being disposed upstream and downstream of the filter-adsorber, the sterilizer being disposed between the valves, the sterilizer comprising one or more of heat treatment, solution spraying, ultraviolet lamps and plasma, the heater being shown.
The valve is opened, the fan is started, the sterilization and disinfection device 301 can be operated or not, the air to be treated passes through the filtering and adsorption device 302 to adsorb pathogenic substances in the filtered air, and pathogenic bacteria in the air are removed and then discharged. The pathogenic substances on the filtering and adsorbing device 302 are sterilized and disinfected.
After the adsorption filtration is performed for a period of time, the fan is stopped, the valve is closed, the sterilization and disinfection device 301 is kept opened, pathogenic substances intercepted on the filtration and adsorption device 302 are treated, after the treatment for a period of time, the air filtration process is repeated, and the two processes are performed alternately.
The sterilization and disinfection treatment is a discontinuous off-line treatment and is switched by a valve.
Fig. 8 and fig. 9 show a system 320 comprising a plurality of filtering and adsorbing devices 3021, 3022, and 3023, a plurality of sterilizing and disinfecting devices 3011, 3012, and 3013 respectively corresponding to the filtering and adsorbing devices 3021, 3022, and 3023 to form a group, a housing 305, and a partition 308, where the partition 308 separates the groups of filtering and adsorbing devices and the corresponding sterilizing and disinfecting devices, and two valves are respectively disposed upstream and downstream of the filtering and adsorbing devices, and the sterilizing and disinfecting devices are disposed between the two valves.
The valve comprises guide rails 306A and 306B and valve plates 307A and 307B, wherein the guide rails are arranged at the air inlet and outlet, the valve plates slide on the guide rails to switch a plurality of positions, and a corresponding filtering and adsorbing device can be closed, while other filtering and adsorbing devices are not closed.
The unclosed filtering and adsorbing device has air passing through, germs in the air are adsorbed and filtered, the closed filtering and adsorbing device has no air passing through, the sterilizing and disinfecting device is kept to be opened, the filtering and adsorbing device is sterilized and disinfected, and the filtering and adsorbing devices are sequentially sterilized and disinfected.
System 320 is capable of sterilizing a portion of the system while air is still passing through the rest of the system and is filtered and adsorbed as compared to system 300, which is completely free of air while sterilizing 300. The 320 system is suitable for being connected with other equipment, such as a section of an air conditioning treatment box, namely a sterilization section, and can realize the sterilization function without influencing the continuous operation of the air conditioning box.
The figure shows 3 groups of independent filtering and adsorbing devices and sterilizing and disinfecting devices, but the invention is not limited to the devices and can be any group.
Fig. 8 is a top view of system 320 and fig. 9 is a right side view.
FIG. 11 is a combination of the systems of FIG. 5, the two systems being in fixed communication to form two air inlets and outlets. Similarly, fig. 12 shows the combination of the systems shown in fig. 10, which facilitates the increase of the processing air volume, and fig. 11 and 12 show two combinations, or more systems can be used for combination.
The system 400 shown in fig. 13 is a system for sterilization and disinfection by using a dehumidifier, and the container 401 is a casing of the dehumidifier, and includes an evaporator 402, a filtering and adsorbing device 403, a condenser 404, a fan 405, a compressor 406, a throttle 407, and a refrigerant pipe 408, wherein the compressor 406, the throttle 407, and the refrigerant pipe 408 form a refrigeration cycle together with the evaporator 402 and the condenser 404, the refrigerant pipe 408 communicates the evaporator 402 and the condenser 404, and the compressor 406 and the throttle 407 are disposed on the refrigerant pipe 408. The air conditioning device comprises a filtering and adsorbing device 403 and a cooling and dehumidifying heat exchanger, the cooling and dehumidifying heat exchanger is an evaporator 402 of a compression refrigeration system, the sterilizing and disinfecting device is a heater, the heater is a condenser 404 of the compression refrigeration system, the evaporator 402 is positioned at the upstream of the condenser 404, the filtering and adsorbing device is positioned at the downstream of the condenser 404, the system provides heat required by sterilizing and disinfecting heat treatment, and meanwhile, the dehumidifying function is realized, and the system also comprises a fan 405
The system 420 of fig. 14 differs from that of fig. 13 in that an auxiliary heat exchanger 409 is added between the heater 403 and the filtering and adsorbing device 404 to further improve the sterilization and disinfection effects.
The system 330 of fig. 15 comprises a container 301, a filtering and adsorbing device 302, a conveying structure 303, a fan 304, a partition 307 and a sterilizing and disinfecting device 308. The two parts of the container are respectively a closed chamber 305 and a filtering and adsorbing chamber 306 provided with a container inlet and a container outlet by a partition 307, the sterilization and disinfection device is arranged in the closed chamber 305, the conveying structure 303 is arranged in the container in a way of crossing the partition 307, one end of the conveying structure is arranged in the closed chamber 305, the other end of the conveying structure is arranged in the filtering and adsorbing chamber 306, the filtering and adsorbing device 302 is arranged on the conveying structure 303, the filtering and adsorbing device 302 passes through an opening in the partition to circularly move between the closed chamber 305 and the other parts 306 of the container, germs in the air are adsorbed in the chamber 306, the adsorbed germs are killed in the chamber 305 by the sterilization and disinfection device, and the fan 304 drives the air to pass.

Claims (10)

1. A method for sterilizing and disinfecting air is characterized in that air to be treated enters a container through an inlet of the container, the container is sealed, the air in the container is subjected to sealed sterilization and disinfection treatment, then an outlet of the container is opened, the treated air is discharged, and the process is repeated for multiple times, so that all the air to be treated is sterilized and disinfected; or the container is not sealed, and the air continuously passes through the container to be sterilized and disinfected and then is discharged; the sterilization and disinfection treatment comprises one or more of the following modes, namely heat treatment, solution spraying, ultraviolet lamp illumination and plasma sterilization treatment; the air can be introduced into the container and discharged from the containerNatural convection mode or driving by a fan and a compressor; the container is a fixed container or a container with variable volume; the minimum volume of the container should satisfy:
Figure FDA0002390802480000011
wherein:
v is the volume of the container,
t is the time required for the process to complete,
t is the time the process air is processed in the vessel,
q is the volume of air that needs to be treated,
c is the compression ratio of the air in the container and the air outside the container.
2. A method for sterilizing and disinfecting air is characterized in that air to be treated is introduced into a container with an air conditioning device, the container is sealed, the air in the container and the device are subjected to sealed sterilization and disinfection treatment, then an outlet of the container is opened, the treated air is discharged, and the process is repeated for multiple times, so that all the air to be treated is sterilized and disinfected; or the container is not sealed, and the air continuously passes through the container to be sterilized and disinfected and then is discharged; the sterilization and disinfection treatment comprises one or more of the following modes, namely heat treatment, solution spraying, ultraviolet lamp illumination and plasma sterilization treatment; the air entering into the container and the air discharging out of the container can be driven by a natural convection mode or a fan and a compressor; the container is a fixed container or a container with variable volume, and the air conditioning device comprises one or more of cooling, dehumidifying, cooling dehumidifying, heating, humidifying, heating humidifying and filtering and absorbing devices.
3. The method as claimed in claim 2, wherein the air conditioning device is a filtering adsorption device and a cooling dehumidification heat exchanger, the sterilization is achieved by heat treatment, the cooling dehumidification heat exchanger is an evaporator of a compression refrigeration system, and the heat treatment is partially or totally from a condenser of the compression refrigeration system.
4. A method according to claim 1 or 2, wherein the sterilisation process comprises a heat treatment, the treated air being cooled by passage through a heat exchanger and pre-heating of the air entering the vessel as it exits.
5. The air sterilization and disinfection system is characterized by comprising a container and a sterilization and disinfection device, wherein the sterilization and disinfection device is arranged in the container or is connected with the container, the sterilization and disinfection device comprises one or more of a heat treatment device, a solution spraying device, an ultraviolet lamp and plasma, the solution spraying system comprises a pump and a spraying pipe, and the spraying pipe is arranged in the container. The container is a variable volume container or a fixed volume container, and is provided with an air inlet, an air outlet or a valve. The minimum volume of the container should satisfy:
Figure FDA0002390802480000021
6. the air sterilizing and disinfecting system is characterized by comprising a container, an air conditioning device and a sterilizing and disinfecting device, wherein the air conditioning device is arranged in the container and comprises one or more of cooling, dehumidifying, cooling dehumidifying, heating, humidifying, heating humidifying and filtering and adsorbing devices. The sterilization and disinfection device is arranged in the container or connected with the container, the sterilization and disinfection device comprises one or more of a heat treatment device, a solution spraying device, an ultraviolet lamp and plasma, the solution spraying system comprises a pump and a spraying pipe, and the spraying pipe is arranged in the container. The container is a variable volume container or a fixed volume container, and is provided with an air inlet and an air outlet.
7. The system of claim 6, further comprising a compressor, a compression refrigeration system consisting of a throttle valve, a refrigerant line, an evaporator and a condenser, and a fan for driving the air flow; the air conditioning device comprises a filtering adsorption device and a cooling dehumidification heat exchanger, the sterilization and disinfection device is a heater, the cooling dehumidification heat exchanger is an evaporator of a compression refrigeration system, and the heater is a condenser of the compression refrigeration system; the evaporator is positioned at the upstream of the condenser, the filtering and adsorbing device is positioned at the downstream of the condenser, and an auxiliary heater is preferably arranged between the required condenser and the filtering and adsorbing device.
8. The system as claimed in claim 6, wherein the system comprises a plurality of filtering and adsorbing devices and sterilizing and disinfecting devices which are arranged in the container, the filtering and adsorbing devices and the sterilizing and disinfecting devices are arranged in a group in a one-to-one correspondence manner, each group of filtering and adsorbing devices and the corresponding sterilizing and disinfecting devices are separated by partition plates, guide rails are arranged on two sides or one side of each filtering and adsorbing device and each sterilizing and disinfecting device, valve plates are arranged on the guide rails, the width of each valve plate is the width of one filtering and adsorbing device, the valve plates are switched to a plurality of positions, and each position encloses the corresponding filtering and adsorbing device and the corresponding sterilizing and disinfecting device.
9. The system of claim 6, further comprising a fan, a baffle, and a transfer structure; the air conditioning device is a filtering and adsorbing device; the container is divided into two parts by a partition board, the two parts are respectively a closed chamber and a filtering and adsorbing chamber provided with a container inlet and a container outlet, the sterilizing and disinfecting device is arranged in the closed chamber, the conveying structure crosses the partition board and is arranged in the container, the filtering and adsorbing device is arranged on the conveying structure, the filtering and adsorbing device passes through an opening on the partition board and circularly rotates between the closed chamber and the filtering and adsorbing chamber, pathogenic bacteria in air are adsorbed in the filtering and adsorbing chamber, the adsorbed pathogenic bacteria are killed by the sterilizing and disinfecting device in the closed chamber, and air is driven by a fan to pass through the filtering and adsorbing device.
10. An air sterilization and disinfection system according to claim 5 or 6, wherein said sterilization and disinfection device comprises a heat treatment device, said system further comprises a heat exchange device, said heat exchange device is disposed outside the container, a cold side inlet of the heat exchange device is an inlet of air to be treated, a cold side outlet of the heat exchange device is connected with the inlet of the container, a hot side inlet of the heat exchange device is connected with the outlet of the container, and a hot side outlet of the heat exchange device is an outlet of treated air; or the heat exchange device is arranged in the container, a cold side inlet of the heat exchange device is connected with an inlet of the container, a hot side outlet of the heat exchange device is connected with an outlet of the container, and the cold side outlet and the hot side inlet are communicated with the inside of the container.
CN202010113552.9A 2020-02-24 2020-02-24 Sterilization and disinfection method and system Withdrawn CN111207462A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111520849A (en) * 2020-06-02 2020-08-11 中山市格兰特电器科技有限公司 Air processor
CN111594931A (en) * 2020-06-01 2020-08-28 宁波奥克斯电气股份有限公司 Control method for UVC (ultraviolet light sterilization) sterilization function of air conditioner and air conditioner
DE102021115563A1 (en) 2021-06-16 2022-12-22 Vaillant Gmbh Procedure for disinfecting a ventilation system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111594931A (en) * 2020-06-01 2020-08-28 宁波奥克斯电气股份有限公司 Control method for UVC (ultraviolet light sterilization) sterilization function of air conditioner and air conditioner
CN111594931B (en) * 2020-06-01 2021-12-28 宁波奥克斯电气股份有限公司 Control method for UVC (ultraviolet light sterilization) sterilization function of air conditioner and air conditioner
CN111520849A (en) * 2020-06-02 2020-08-11 中山市格兰特电器科技有限公司 Air processor
DE102021115563A1 (en) 2021-06-16 2022-12-22 Vaillant Gmbh Procedure for disinfecting a ventilation system

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