CN115046257A - Fresh air handling unit and operation method thereof - Google Patents

Fresh air handling unit and operation method thereof Download PDF

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Publication number
CN115046257A
CN115046257A CN202210672334.8A CN202210672334A CN115046257A CN 115046257 A CN115046257 A CN 115046257A CN 202210672334 A CN202210672334 A CN 202210672334A CN 115046257 A CN115046257 A CN 115046257A
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CN
China
Prior art keywords
filter
fresh air
unit
air
handling unit
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Withdrawn
Application number
CN202210672334.8A
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Chinese (zh)
Inventor
许勇
刘耀斌
李锦彬
王鹏
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Beijing Tongfang Clean Tech Co ltd
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Beijing Tongfang Clean Tech Co ltd
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Priority to CN202210672334.8A priority Critical patent/CN115046257A/en
Publication of CN115046257A publication Critical patent/CN115046257A/en
Withdrawn legal-status Critical Current

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • 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
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/22—Phase substances, e.g. smokes, aerosols or sprayed or atomised substances
    • 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
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/24—Apparatus using programmed or automatic operation
    • 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
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/26—Accessories or devices or components used for biocidal treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/12—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of sliding members
    • 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
    • F24F7/003—Ventilation in combination with air cleaning
    • 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
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • 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
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • 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
    • F24F8/90—Cleaning of purification apparatus
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/13—Biocide decomposition means, e.g. catalysts, sorbents
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/10—Apparatus features
    • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Signal Processing (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

The application relates to a fresh air handling unit and an operation method thereof. The fresh air handling unit comprises an air inlet duct, one end of which is provided with an air inlet; a fixed baffle is arranged along the axial direction of the air inlet duct to divide the air inlet duct into at least two filtering units; one end of the air supply duct is connected with the air inlet duct, and the other end of the air supply duct is provided with an air supply outlet; the fresh air fan is arranged in the air supply duct; the surface cooler is arranged in the air supply duct; the gas filtering device is arranged in the air inlet duct, comprises a filter and is arranged in the filtering unit; the switch mechanism can form a closed space in the air inlet duct and close the filter in one filter unit in the closed space; the sterilizing mechanism can sterilize the filter in the closed space; and the control mechanism is electrically connected with the switch mechanism and the killing mechanism. The technical problem to be solved is to enable a fresh air handling unit to complete the sterilization of viruses and bacteria on line under the condition of continuous operation, so that the viruses and bacteria can be effectively separated from the activity space of people, and the operation of the fresh air handling unit is not influenced by stopping the machine.

Description

Fresh air handling unit and operation method thereof
Technical Field
The application belongs to the technical field of air disinfection and purification, and particularly relates to a fresh air handling unit and an operation method thereof.
Background
The fresh air handling unit is indispensable equipment of central air conditioning system, is the assurance of the required oxygen content of indoor personnel. Generally, the indoor environment of the central air-conditioning system is 25m per person by the fresh air handling unit 3 And h, sending fresh air outdoors. In certain specific cases, if the air in the outdoor environment is contaminated by viruses and bacteria, the filters of the fresh air handling unit need to be disinfected and sterilized, otherwise the fresh air sent into the room by the fresh air handling unit will harm the health of the workers in the room.
However, in the prior art, the fresh air unit is difficult to be provided with an effective air sterilization and disinfection system. On one hand, because the retention time of the gas in the fresh air handling unit is limited, the disinfection by adopting a chemical method or a physical method is difficult to realize in such a short time; on the other hand, even if the sterilization and disinfection of air is performed by means of increasing the concentration of the disinfecting substance or increasing the intensity of the disinfecting radiation, the chemical substances and the like remaining in the air may enter the space where people move along with the air blowing port, causing adverse effects on the human body.
Meanwhile, in many occasions using the fresh air handling unit, due to reasons such as special business, the fresh air handling unit in the fresh air handling unit needs to be operated continuously, and the time for carrying out air sterilization and disinfection by shutting down the machine completely is not provided at all.
Disclosure of Invention
The main purpose of the application is to provide a fresh air handling unit and an operation method thereof, and the technical problem to be solved is to enable the fresh air handling unit to complete the killing of viruses and bacteria on line under the condition of continuous operation, so that the viruses, the bacteria and the crowd activity space can be effectively separated, the safety of the space is ensured, the operation of the fresh air handling unit is not influenced by stopping the machine, and the fresh air handling unit is more suitable for practical use.
The purpose of the application and the technical problem to be solved are realized by adopting the following technical scheme. According to the new fan group that this application provided, it includes:
one end of the air inlet duct is provided with an air inlet; a fixed baffle is arranged in the air inlet duct along the axial direction of the air inlet duct to divide the air inlet duct into at least two filtering units;
one end of the air supply duct is connected with the air inlet duct, and the other end of the air supply duct is provided with an air supply outlet;
the fresh air fan is arranged in the air supply duct and close to the air supply outlet;
the surface cooler is arranged in the air supply duct and is used for carrying out heat exchange with air flowing through the air supply duct; and the combination of (a) and (b),
the gas filtering device is arranged in the air inlet duct and comprises
A filter disposed in the filter unit; the filter comprises at least a high efficiency filter;
the switch mechanism can form a closed space in the air inlet duct and close a filter in a filter unit in the closed space;
a sterilizing mechanism capable of sterilizing the filter in the closed space; and the combination of (a) and (b),
the control mechanism is electrically connected with the switch mechanism and the killing mechanism; according to the command of the control mechanism, the switch mechanism closes the filter in one of the filter units, so that the filter is in the closed space formed by the switch mechanism, and the sterilizing mechanism sterilizes the filter in the closed space.
The purpose of the application and the technical problem to be solved can be further realized by adopting the following technical measures.
Preferably, in the fresh air handling unit, the air inlet duct is a square duct, and the fixed baffle is parallel to a pair of side walls of the square duct; and two ends of the fixed baffle are respectively connected with the other pair of side walls of the square air duct.
Preferably, in the fresh air handling unit, the fixed baffle is arranged vertically, and the filtering units are arranged in parallel along the horizontal direction; or the fixed baffle is horizontally arranged, and the filtering units are arranged in parallel along the vertical direction.
Preferably, in the fresh air handling unit, the switch mechanism includes two movable baffles; the movable baffle is respectively arranged at the air inlet end and the air outlet end of the filtering unit; the movable baffle plate can be connected with the fixed baffle plate and the other pair of side walls to form a closed space.
Preferably, in the fresh air handling unit, the switch mechanism includes a moving unit; the motion unit comprises a slide bar, a slide block and a driving motor; the sliding block is fixedly connected to the movable baffle; the control mechanism controls the driving motor to drive the sliding block to move along the sliding rod.
Preferably, in the fresh air handling unit, the movable baffle is arranged at the upstream and the downstream of the filter perpendicular to the fixed baffle; the control mechanism can control the moving unit to enable the movable baffle to move up and down in the vertical direction or move left and right in the horizontal direction.
Preferably, in the fresh air handling unit, the switch mechanism includes a sealing unit; the control mechanism can control the sealing unit to enable the filter to be disinfected and sterilized to be in the closed space.
Preferably, in the fresh air handling unit, the sterilizing mechanism includes a sterilizing blower and a disinfectant sprayer and/or a catalyst storage arranged in parallel; the disinfectant blower is capable of delivering a disinfectant spray generated by the disinfectant sprayer to the filter unit; alternatively, the disinfection blower may be capable of delivering catalyst in the catalyst reservoir to the filtration unit.
Preferably, in the fresh air handling unit, the sterilizing mechanism further includes a first electric three-way valve and a second electric three-way valve; one end of the first electric three-way valve is connected with the disinfection fan, and the other two ends of the first electric three-way valve are respectively connected with the disinfectant sprayer and the catalyst storage; one end of the second electric three-way valve is connected with the filtering unit, and the other two ends of the second electric three-way valve are respectively connected with the disinfectant sprayer and the catalyst storage.
Preferably, in the fresh air handling unit, the sterilizing mechanism further includes a nozzle and a spray pipeline; the nozzle and the spraying pipeline are arranged on the movable baffle.
Preferably, the fresh air handling unit comprises:
a coarse filter;
the medium-effect filter is arranged at the downstream of the coarse-effect filter;
and the high-efficiency filter is arranged at the downstream of the medium-efficiency filter.
Preferably, in the fresh air handling unit, the filter is a straight filter, a V-shaped filter, a W-shaped filter, a bag filter or a cylindrical filter.
The purpose of the present application and the technical problem to be solved are also achieved by the following technical solutions. According to the operation method of the fresh air handling unit, the fresh air handling unit comprises an air inlet duct; the air inlet duct comprises at least two filters which are arranged in parallel; the method comprises the following steps:
one of the filters is enclosed in a closed space and is sterilized while the other filters filter air.
By means of the technical scheme, the fresh air handling unit and the operation method thereof at least have the following advantages:
according to the fresh air handling unit and the operation method thereof, an air duct of the fresh air handling unit is divided into at least 2 or more filter units which are arranged in parallel in a physical mode; each filtering unit is at least provided with a high-efficiency filter for filtering viruses, bacteria and the like in the gas. When the filter absorbs viruses, bacteria and the like to influence the ventilation effect of the filter, or the filter needs to be sterilized according to preset sterilization conditions, the filter in one filtering unit can be sealed in a closed space, firstly, the sterilizing fan is used for spraying and conveying the sterilizing agent to the filter in the closed space for sufficient sterilization, and after the viruses and the bacteria are sterilized, the sterilizing fan is used for conveying the catalyst in the catalyst storage to the closed space to decompose the residual sterilizing agent in the closed space; after the residual disinfectant is completely decomposed, the closed space can be opened, and then the other filtering unit is disinfected and sterilized in the same step; the virus and bacteria killing of all the filtering units is completed by analogy; the fresh air handling unit and the operation method thereof can enable the fresh air handling unit to complete the killing of viruses and bacteria on line under the condition of continuous operation, effectively block the viruses and bacteria from the movement space of people, ensure the safety of the movement space of people, and do not need to stop to influence the operation of the fresh air handling unit.
The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clear and clear, and to implement the technical solutions according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram-in elevation view of a fresh air handling unit according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a square duct according to an embodiment of the present application;
fig. 3 is a schematic diagram of a fresh air handling unit in an embodiment of the present application, side view.
Detailed Description
To further illustrate the technical means and effects adopted by the present application to achieve the intended application purpose, the following detailed description is given to a fresh air handling unit and an operation method thereof according to the present application, and specific embodiments, structures, features and effects thereof, in conjunction with the accompanying drawings and preferred embodiments.
The application provides a fresh air handling unit, as shown in attached figures 1 and 3, which comprises an air inlet duct 1; one end of the air inlet duct 1 is provided with an air inlet 11; a fixed baffle plate 12 is arranged in the air inlet duct 1 along the axial direction of the air inlet duct to divide the air inlet duct 1 into at least two filtering units; the fresh air handling unit also comprises an air supply duct 2, one end of the air supply duct is connected with the air inlet duct 1, and the other end of the air supply duct is provided with an air supply outlet 21; the fresh air unit also comprises a fresh air fan 3; the fresh air fan 3 is arranged in the air supply duct 2 and close to the air supply outlet 21; the fresh air handling unit also comprises a surface cooler 4; the surface cooler 4 is arranged in the air supply duct 2 and is used for exchanging heat with air flowing through the air supply duct 2; the surface cooler 4 can be a coil structure and is arranged around the air supply duct, and in the schematic diagram, the surface cooler is only shown in a block diagram form, and the pipeline of the surface cooler is not specifically drawn, and any coil surrounding structure in the prior art can be used; media such as cold water, chilled water or hot water can be introduced into the pipeline of the surface air cooler to cool or heat the air flowing through the air duct, so that the air exchanges heat with the air in the air duct around the surface air cooler; the fresh air handling unit also comprises an air filtering device; the gas filtering device is arranged in the air inlet duct 1; the gas filtering means comprises a filter 51; the filter 51 is arranged in the filter unit; the filter 51 comprises at least a high efficiency filter 511; the high efficiency filter 511 can filter the virus and bacteria in the air and block/adsorb the virus and bacteria on the filter 51; the gas filtering device also comprises a switch mechanism; the switch mechanism can form a closed space 52 in the air inlet duct 1 and close a filter 51 in a filter unit in the closed space 52; the gas filtering device also comprises a sterilizing mechanism; the sterilizing mechanism can sterilize the filter 51 in the closed space 51; the gas filtering device also comprises a control mechanism; the control mechanism is electrically connected with the switch mechanism and the killing mechanism; according to the command of the control mechanism, the switch mechanism closes the filter in one of the filter units, so that the filter is in the closed space formed by the switch mechanism, and the sterilizing mechanism sterilizes the filter in the closed space.
In the fresh air handling unit in the technical scheme, when the fresh air handling unit is installed, the air inlet is installed in the outdoor direction, and the air supply outlet is installed in the indoor direction; when the surface cooler and the fresh air fan work simultaneously, the fresh air unit has the functions of heating or cooling and dehumidifying outdoor fresh air; when the filter, the surface cooler and the fresh air fan work simultaneously, the filter can adsorb/block viruses and bacteria on outdoor environment air polluted by germs, so that the health of indoor workers is prevented from being harmed by fresh air sent into the room; furthermore, the fresh air handling unit can perform online killing of the viruses and bacteria adsorbed/blocked on the filter according to a preset program under the condition of continuous operation, and the operation of the fresh air handling unit cannot be influenced.
In a specific embodiment of the present application, the air inlet duct 1 is a square duct; the square air duct is a square pipeline consisting of two side plates 15, a bottom plate 13 and a top plate 14; the two side plates can also be called a pair of side walls or another pair of side walls; the bottom plate and the top plate may also be referred to as a pair of side walls or another pair of side walls; the square air duct can be of a flat structure or a thin and high structure; the fixed baffle is parallel to a pair of side walls of the square air duct; and two ends of the fixed baffle are respectively connected with the other pair of side walls of the square air duct.
In a specific embodiment of the present application, the fixed baffle is vertically disposed, and the filtering units are horizontally disposed in parallel; or the fixed baffle is horizontally arranged, and the filtering units are arranged in parallel along the vertical direction.
In one embodiment of the present application, the switch mechanism comprises two movable shutters 531; the movable baffle 531 is respectively arranged at the air inlet end and the air outlet end of the filter unit, namely the upstream and the downstream of the filter 51; the movable baffle 531 can be connected with the fixed baffle 12, a pair of side walls or another pair of side walls to form a closed space. The switch mechanism can close the filter 51 in one of the filter units in the closed space 52, and the filter 51 closed in the closed space 52 is sterilized by the sterilizing mechanism. In the process that the switch mechanism and the sterilizing mechanism carry out the sterilizing activity, the filters in other filter units can normally filter gas.
In a particular embodiment of the present application, the switching mechanism comprises a moving unit; the control mechanism can control the moving unit to move the movable baffle 531; the motion unit comprises a slide bar 532, a slide block 533 and a driving motor (not labeled in the figure); the sliding block 533 is fixedly connected to the movable baffle 531; the control mechanism controls the driving motor to drive the slider 533 to move along the slide bar 532. In a specific embodiment of the present application, the slide bar is implemented using a lead screw guide.
In a particular embodiment of the present application, the switch mechanism comprises a slide rail; and two ends of the movable baffle are inserted into the slide rails and can move along the slide rails.
In a specific embodiment of the present application, the movable barrier 531 is disposed upstream and downstream of the filter 51 perpendicular to the fixed barrier 12; the control mechanism can control the moving unit to move the movable barrier 531 up and down in the vertical direction or to move the movable barrier 531 left and right in the horizontal direction.
In one embodiment of the present application, the fresh air handling unit further comprises a movable baffle receiving space. When the fresh air handling unit does not need to be killed, the movable baffle can be accommodated in the accommodating space of the movable baffle; at this time, all the filter units are in the operation period of filtering the air, and the air circulation of the fresh air handling unit is not influenced. When the fresh air handling unit needs to be killed, the movable baffle is killed in one of the filter units, one of all the filter units is in a state of stopping filtering air, and the fresh air handling unit can operate under the design air volume (N-1)/Nx 100%, wherein N is larger than or equal to 2.
In a specific embodiment of the present application, the flapper is collapsible for storage.
In a specific embodiment of the present application, the movable baffle of the fresh air handling unit is not housed; the movable baffle and the fixed baffle form a closed space. When the fresh air handling unit needs to be sterilized, the sterilizing mechanism can be started to sterilize the filter in the closed space; when the fresh air handling unit does not need to be sterilized, the sterilizing mechanism is closed, and at the moment, the closed space only stays in one filtering unit. When the process parameters of the fresh air handling unit are designed, the air volume design allowance of one filtering unit can be considered; under the condition, the fresh air volume and the environment temperature condition provided by the fresh air handling unit are not influenced no matter when the fresh air handling unit is killed and started or killed and not started.
In one embodiment of the present application, the switching mechanism comprises a sealing unit (not shown); the control mechanism can control the sealing unit to enable the filter to be disinfected and sterilized to be in the closed space. The seal may be made by using a sealing material or any dynamic sealing technique known in the art, and is not particularly limited in this application.
In one embodiment of the present application, the sterilizing mechanism comprises a sterilizing blower 54 and a disinfectant sprayer 55 and/or a catalyst reservoir 56 arranged in parallel; the disinfectant blower 54 is capable of delivering a disinfectant spray generated by the disinfectant sprayer 55 to the filter unit; the catalyst storage 56 can store a catalyst with a disinfectant catalytic decomposition function, so that the catalyst can be conveyed to the closed space 52 through the disinfection fan 54, and the residual disinfectant after disinfection can be decomposed, so that the phenomenon that the disinfectant is blown into the room by times to cause environmental pollution and influence on human health is avoided.
In one embodiment of the present application, the killing mechanism further comprises a first electric three-way valve 571 and a second electric three-way valve 572; one end of the first electric three-way valve 571 is connected with the disinfection blower 54, and the other two ends are respectively connected with the disinfectant sprayer 55 and the catalyst storage 56; one end of the second electric three-way valve 572 is connected to the filter unit, and the other two ends are respectively connected to the disinfectant sprayer 55 and the catalyst reservoir 56.
In one embodiment of the present application, the killing mechanism further comprises a nozzle 58 and a spray line; the nozzle 58 extends into the enclosed space 52 for spraying a spray of disinfectant into the enclosed space 52 to kill viruses and bacteria filtered and adsorbed on the filter, or for spraying a catalyst into the enclosed space 52 to break up a residual spray of disinfectant.
In one embodiment of the present application, the nozzle 58 and the spray pipe are both disposed on the movable baffle 531, and can move along with the movement of the movable baffle 531; this design allows different filter units to share a common set of nozzles 58 and spray lines without the need for special nozzles and spray lines in each filter unit.
In one embodiment of the present application, the sterilizing mechanism further comprises a return air line connecting the filter unit and the inlet of the sterilizing blower to maintain the gas balance of the system.
In one embodiment of the present application, each filter unit may share a set of spray devices; the spray head of the spraying device and the return air pipeline move along with the movable baffle.
In one embodiment of the present application, the disinfectant may be any liquid disinfectant capable of disinfecting infectious disease viruses and bacteria; in particular, hydrogen peroxide is used as the disinfectant in one particular embodiment of the present application.
In one embodiment of the present application, the killing of the virus and the bacteria can be performed by any killing means in the prior art, for example, any one of an ultraviolet sterilization device, an ozone sterilization device or a microwave sterilization device.
In a specific embodiment of the present application, the spacing between the fixed baffles is uniformly arranged, which is aimed at keeping the area of the ventilation cross section uniform for different filter units to adapt to the switch mechanism; meanwhile, the air quantity and the temperature of the fresh air handling unit are basically equivalent when different filter units are killed.
In one particular embodiment of the present application, the filter 51 comprises a coarse filter 513; the coarse filter 513 is used for filtering impurities such as hair and flying floc in the gas; the filter 51 further comprises a medium effect filter 512; the middle-effect filter 512 is arranged at the downstream of the coarse-effect filter 513 and is used for filtering dust particles such as PM10 and PM50 in the gas; the filter 51 further comprises a high efficiency filter 511; the high efficiency filter 511 is disposed downstream of the medium efficiency filter 512, and is used for filtering and adsorbing fine particles such as PM2.5, viruses and bacteria in the gas.
In one embodiment of the present application, the filter comprises at least a high efficiency filter capable of filtering and adsorbing viruses and bacteria in the gas flowing through the high efficiency filter.
In a specific embodiment of the present application, each filter unit includes a high efficiency filter, and all the filter units in the air inlet duct can filter and adsorb viruses and bacteria.
In a particular embodiment of the present application, the filter may take any form of filter, preferably a straight panel filter, a V-bank filter, a W-bank filter, a bag filter, or a cylindrical filter.
When the filter of the fresh air handling unit needs to be disinfected and sterilized, the filter to be disinfected and sterilized is placed in the closed space through the switch mechanism; then starting a disinfection fan of the sterilizing mechanism, starting a straight-through way (communicated with a disinfectant sprayer) of the electric three-way valve, conveying the mist disinfectant in the disinfectant sprayer to the closed space by the disinfection fan, and fully sterilizing the filter by the atomized disinfectant; after the filter is sterilized for the set sterilizing time, the electric three-way valve is reversed (communicated with the catalyst storage), and the catalyst in the catalyst storage is conveyed to the closed space by the sterilizing fan to decompose the residual disinfectant in the closed space; after the catalyst is decomposed for a set time, the residual disinfectant in the closed space is completely decomposed, and at the moment, the movable baffle moves to open the closed space; the flapper then moves to a set position according to the instructions of the control system.
In one embodiment of the present application, the control mechanism can automatically start or stop the killing of the filter unit according to a preset program.
In a specific embodiment of the present application, the fresh air handling unit further comprises a human-machine dialog interface; a technician can maintain a preset program through the man-machine conversation interface; meanwhile, an operator can intervene the control mechanism manually through the man-machine conversation interface to kill and kill.
In a specific embodiment of the present application, the killing mechanism is disposed outside the air duct and connected to the filter unit through a pipe. The pipeline communicated with the filtering unit can be a hose; the length of the pipeline is required to ensure that the disinfection fan can smoothly convey the disinfectant spray and the catalyst to the filter unit in the closed space.
In a specific embodiment of the present application, the sterilizing mechanism may also be disposed inside the air duct, and the sterilizing mechanism may be disposed on the top and/or side of the filter unit, under the permission of the space inside the air duct, so that the disinfectant spray or catalyst can directly act on the filter unit to sterilize viruses and bacteria and decompose residual disinfectant.
The application also provides an operation method of the fresh air unit, wherein the fresh air unit comprises an air inlet duct; the air inlet duct comprises at least two filters which are arranged in parallel; the method comprises the following steps: one of the filters is enclosed in a closed space and is sterilized while the other filters filter air.
In one embodiment of the present application, the operation method of the fresh air handling unit described herein can kill viruses and bacteria filtered and adsorbed on the high efficiency filter on line under the condition of continuous operation.
Features from the claims and/or the description may be combined, and the combination is not limited to the combination obtained by the reference in the claims. The technical solutions obtained by combining the technical features in the claims and/or the specification are also the scope of the present application.
The foregoing is a preferred embodiment of the present application, which is not intended to be limiting in any way, and any simple modifications, equivalent variations and modifications made to the foregoing embodiment according to the technical spirit of the present application are within the scope of the present application.

Claims (13)

1. A fresh air handling unit, comprising:
one end of the air inlet duct is provided with an air inlet; a fixed baffle is arranged in the air inlet duct along the axial direction of the air inlet duct to divide the air inlet duct into at least two filtering units;
one end of the air supply duct is connected with the air inlet duct, and the other end of the air supply duct is provided with an air supply outlet;
the fresh air fan is arranged in the air supply duct and close to the air supply outlet;
the surface cooler is arranged in the air supply duct and is used for carrying out heat exchange with air flowing through the air supply duct; and the combination of (a) and (b),
gas filtering device set up in the air inlet duct, it includes:
a filter disposed in the filter unit; the filter comprises at least a high efficiency filter;
the switch mechanism can form a closed space in the air inlet duct and close a filter in a filter unit in the closed space;
a sterilizing mechanism capable of sterilizing the filter in the closed space; and the combination of (a) and (b),
the control mechanism is electrically connected with the switch mechanism and the killing mechanism; according to the command of the control mechanism, the switch mechanism closes the filter in one of the filter units, so that the filter is in the closed space formed by the switch mechanism, and the sterilizing mechanism sterilizes the filter in the closed space.
2. The fresh air handling unit of claim 1, wherein the inlet air duct is a square air duct, and the fixed baffle is parallel to a pair of side walls of the square air duct; and two ends of the fixed baffle are respectively connected with the other pair of side walls of the square air duct.
3. The fresh air handling unit according to claim 1, wherein the fixed baffle is vertically disposed, and the filter units are horizontally disposed in parallel; or the fixed baffle is horizontally arranged, and the filtering units are arranged in parallel along the vertical direction.
4. The fresh air handling unit of claim 2 wherein the switch mechanism includes two movable shutters; the movable baffle is respectively arranged at the air inlet end and the air outlet end of the filtering unit; the movable baffle plate can be connected with the fixed baffle plate and the other pair of side walls to form a closed space.
5. The fresh air handling unit of claim 4 wherein the switch mechanism includes a motion unit; the motion unit comprises a slide bar, a slide block and a driving motor; the sliding block is fixedly connected to the movable baffle; the control mechanism controls the driving motor to drive the sliding block to move along the sliding rod.
6. The fresh air handling unit of claim 5 wherein the movable baffle is disposed upstream and downstream of the filter perpendicular to the fixed baffle; the control mechanism can control the moving unit to enable the movable baffle to move up and down in the vertical direction or move left and right in the horizontal direction.
7. The fresh air handling unit of claim 1 wherein the switch mechanism comprises a sealing unit; the control mechanism can control the sealing unit to enable the filter to be disinfected and sterilized to be in the closed space.
8. The fresh air handling unit of claim 1, wherein the sterilizing mechanism comprises a sterilizing blower and a disinfectant mist generator and/or a catalyst reservoir arranged in parallel; the disinfectant blower is capable of delivering a disinfectant spray generated by the disinfectant sprayer to the filter unit; alternatively, the disinfection blower may be capable of delivering catalyst from the catalyst reservoir to the filtration unit.
9. The fresh air handling unit of claim 8, wherein the killing mechanism further comprises a first electrically operated three-way valve and a second electrically operated three-way valve; one end of the first electric three-way valve is connected with the disinfection fan, and the other two ends of the first electric three-way valve are respectively connected with the disinfectant sprayer and the catalyst storage; one end of the second electric three-way valve is connected with the filtering unit, and the other two ends of the second electric three-way valve are respectively connected with the disinfectant sprayer and the catalyst storage.
10. The fresh air handling unit according to any one of claims 4 to 6, wherein the killing mechanism further comprises a nozzle and a spray pipe; the nozzle and the spraying pipeline are both arranged on the movable baffle.
11. The fresh air handling unit of claim 1, wherein the filter comprises:
a coarse filter;
the medium-effect filter is arranged at the downstream of the coarse-effect filter;
and the high-efficiency filter is arranged at the downstream of the medium-efficiency filter.
12. The fresh air handling unit of claim 1 wherein the filter is a straight filter, a V-bank filter, a W-bank filter, a bag filter, or a cylindrical filter.
13. An operation method of a fresh air unit is characterized in that the fresh air unit comprises an air inlet duct; the air inlet duct comprises at least two filters which are arranged in parallel; the method comprises the following steps:
one of the filters is enclosed in a closed space and is sterilized while the other filters filter air.
CN202210672334.8A 2022-06-15 2022-06-15 Fresh air handling unit and operation method thereof Withdrawn CN115046257A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108036421A (en) * 2017-12-13 2018-05-15 李鹏鹏 A kind of multifunctional air purifier
CN111735171A (en) * 2020-06-30 2020-10-02 四川科志人防设备股份有限公司 Fresh air system air sterilizing machine
CN112268344A (en) * 2020-11-25 2021-01-26 珠海格力电器股份有限公司 Air purifier
CN112503689A (en) * 2020-12-10 2021-03-16 广州金鹏环保工程有限公司 Mobile scanning type dynamic filtering static sterilization and disinfection system and method
CN113280458A (en) * 2021-05-24 2021-08-20 广州菲思中西医医院有限公司 Air purification equipment that bactericidal effect is good
WO2022071682A1 (en) * 2020-09-29 2022-04-07 (주)엔아이디에스 Composite air sterilization purifier
CN217715184U (en) * 2022-06-15 2022-11-01 北京同方清环科技有限公司 Fresh air handling unit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108036421A (en) * 2017-12-13 2018-05-15 李鹏鹏 A kind of multifunctional air purifier
CN111735171A (en) * 2020-06-30 2020-10-02 四川科志人防设备股份有限公司 Fresh air system air sterilizing machine
WO2022071682A1 (en) * 2020-09-29 2022-04-07 (주)엔아이디에스 Composite air sterilization purifier
CN112268344A (en) * 2020-11-25 2021-01-26 珠海格力电器股份有限公司 Air purifier
CN112503689A (en) * 2020-12-10 2021-03-16 广州金鹏环保工程有限公司 Mobile scanning type dynamic filtering static sterilization and disinfection system and method
CN113280458A (en) * 2021-05-24 2021-08-20 广州菲思中西医医院有限公司 Air purification equipment that bactericidal effect is good
CN217715184U (en) * 2022-06-15 2022-11-01 北京同方清环科技有限公司 Fresh air handling unit

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Application publication date: 20220913