CN111397075A - Ventilation system and ventilation method - Google Patents
Ventilation system and ventilation method Download PDFInfo
- Publication number
- CN111397075A CN111397075A CN202010498805.9A CN202010498805A CN111397075A CN 111397075 A CN111397075 A CN 111397075A CN 202010498805 A CN202010498805 A CN 202010498805A CN 111397075 A CN111397075 A CN 111397075A
- Authority
- CN
- China
- Prior art keywords
- air
- branch
- air inlet
- ventilation
- return
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- F24F7/08—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 with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
-
- 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
- F24F13/28—Arrangement or mounting of filters
-
- 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
-
- 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
- F24F8/20—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
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
- F24F8/26—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media using ozone
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention relates to the technical field of epidemic situation prevention and control, and provides a ventilation system and a ventilation method, wherein the ventilation system comprises: the air inlet structure comprises a first air inlet branch and a second air inlet branch, and the first air inlet branch is provided with a first valve and can be communicated with the external environment; the air return structure comprises a first air return branch and a second air return branch, and the first air return branch is provided with a second valve and can be communicated with the external environment; the ventilation regulating component is mounted on the building and is suitable for switching between a closed position and an open position; the cleaning device comprises an air inlet end and an air outlet end, the air inlet end is connected with a second air return branch and a first air inlet branch, and the air outlet end is connected with the air inlet side of the building through the second air inlet branch; the air exhaust structure is connected with the air outlet end, is provided with a third valve and is suitable for being communicated with the external environment. The ventilation system provided by the invention can realize clean ventilation under the conventional condition and can quickly start the protection function under the emergency condition.
Description
Technical Field
The invention relates to the technical field of epidemic situation prevention and control, in particular to a ventilation system and a ventilation method.
Background
The virulent infectious epidemic (such as SARS epidemic and new coronavirus epidemic) is a typical biochemical crisis, and the ground building is the main place for people to cover and protect emergently, carry out medical rescue and cure injuries and diseases. People are the first choice of emergency measures to implement safety shielding in time according to the environment in which the people are located, and the most convenient and feasible safety shielding mode is to implement collective protection depending on nearby or self-located buildings. The ground building can provide in-situ, instant and quick shielding, and the advantage is incomparable with other shielding modes in different places; the ground buildings are enough in quantity, so that the people can be fully shielded; the living order of people is less affected when the people are shielded in situ, the chance of being exposed to pathogen to pollute the environment is greatly reduced, and the casualty scale is also minimum.
The ground building is applied to epidemic situation prevention and control and emergency shelter, the prerequisite is that the building has certain protective capability, the virulent infectious disease pathogen generally has the characteristics of low infection dose, long survival time, air transmission and the like, and the ground building needs to have a safety protection function in order to prevent the pathogen in an infectious disease area from escaping and causing infection to surrounding healthy people. At present, the protection system of ground building lacks, is difficult to satisfy the protection demand.
In the epidemic period, a large number of people are infected in a short period, and in order to meet the requirements of prevention and control of the virulent infectious epidemic, hospitals need to meet the requirements of receiving and treating. For example, an existing general ward area is modified into an infectious ward area in a short time, or various large-scale venues are modified into a shelter hospital, or temporary building facilities are built, so that the treatment capacity is rapidly expanded. However, the buildings in public places such as office areas, hospitals, schools, factories and the like of the current government offices are difficult to meet the requirements of emergency epidemic prevention and deal with the strong infectious diseases.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the ventilation system provided by the invention can clean and ventilate in a conventional condition and quickly start a protection function in an emergency condition; the modularized movable shelter can realize modularization, is convenient to move and install, and can meet various use occasions such as fixed buildings, emergency buildings, movable large-scale shelter equipment and the like.
The invention also provides a ventilation method.
A ventilation system according to an embodiment of the first aspect of the invention comprises:
the air inlet structure comprises a first air inlet branch and a second air inlet branch, wherein the first air inlet branch is provided with a first valve and is suitable for being communicated with the external environment;
the air return structure is used for being connected with an air return side of a building and comprises a first air return branch and a second air return branch, and the first air return branch is provided with a second valve and is suitable for being communicated with the external environment;
a ventilation regulating member mounted to the building and adapted to be switched between a closed position in which the ventilation regulating member is hermetically connected to the building and an open position in which air can be supplied into the building or discharged out of the building through the ventilation regulating member;
the cleaning device comprises an air inlet end, an air outlet end and a disinfection and sterilization assembly arranged between the air inlet end and the air outlet end, wherein the air inlet end is connected with the second air return branch and the first air inlet branch, and the air outlet end is connected with the air inlet side of a building through the second air inlet branch;
and the air exhaust structure is connected to the air outlet end, is provided with a third valve and is suitable for being communicated with the external environment.
According to an embodiment of the invention, the heat exchanger further comprises a heat exchanger, the heat exchanger comprises a first heat exchange passage and a second heat exchange passage connected with the first heat exchange passage in parallel, the first heat exchange passage is connected with the first air inlet branch, and the second heat exchange passage is connected with the first air return branch.
According to one embodiment of the invention, the cleaning device comprises one or more of a primary filter component, a medium filter component and a high-efficiency filter component, at least one of the primary filter component, the medium filter component and the high-efficiency filter component is connected with the air inlet end and the air outlet end, and at least one of the primary filter component, the medium filter component and the high-efficiency filter component is connected with the disinfection and sterilization component.
According to one embodiment of the invention, a first on-off structure is arranged between the primary filter assembly and the intermediate filter assembly;
and/or a second on-off structure is arranged between the medium-efficiency filter component and the high-efficiency filter component.
According to an embodiment of the invention, the air return structure comprises a main pipeline, one end of the main pipeline is connected with the air return side, the other end of the main pipeline is connected with the first air return branch and the second air return branch, the main pipeline is connected with the air inlet end through the second air return branch, and a fourth valve for switching and adjusting the second air return branch is arranged on the second air return branch.
According to an embodiment of the invention, the air-conditioning system further comprises a fan, the air outlet end is connected with the fan, an air inlet of the fan is connected with the air outlet end, an air outlet of the fan is connected with the second air inlet branch and the air exhaust structure, and a fifth valve is arranged on the second air inlet branch.
According to one embodiment of the invention, the air conditioner further comprises a control unit arranged in the building, and the control unit is used for regulating and controlling the on-off of the air inlet structure, the air return structure, the ventilation regulating component, the cleaning device and the air exhaust structure.
According to one embodiment of the invention, at least one of the air inlet structure and the air return structure is provided with an air gauge;
and/or a differential pressure gauge is arranged in the building.
According to the ventilation method of the second aspect of the embodiment of the invention, the ventilation system adopting the above-mentioned embodiment comprises a first ventilation mode, a second ventilation mode and a third ventilation mode which can be switched with each other,
the first ventilation mode: the first valve is closed to enable the first air inlet branch to be closed, the second valve is closed to enable the first air return branch to be closed, the ventilation regulating component is in the open position and can supply air into the building through the ventilation regulating component, the air return side, the second air return branch, the cleaning device and the air exhausting structure are communicated, and the third valve is opened to enable the air exhausting structure to communicate the cleaning device with the external environment;
the second ventilation mode is as follows: the third valve is closed to enable the air exhaust structure to be closed, the second return air branch is closed, the first valve is opened to enable the first air inlet branch to be communicated with the cleaning device and the external environment, the first air inlet branch, the cleaning device, the second air inlet branch and the air inlet side are communicated, and the ventilation adjusting part is in the open position and can exhaust air to the outside of the building through the ventilation adjusting part;
the third ventilation mode: the first valve is opened to enable the first air inlet branch to be communicated with the cleaning device and the external environment, the second valve is opened to enable the first air return branch to be communicated with the air return side and the external environment, and the first air inlet branch, the cleaning device, the second air inlet branch, the air inlet side, the air return side and the first air return branch are communicated.
According to an embodiment of the invention, in the first ventilation mode, the cleaning device is communicated with the air inlet side through the second air inlet branch;
and/or, in the second ventilation mode, the second valve is opened to communicate the first return branch with the external environment.
One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:
the ventilation system provided by the embodiment of the invention comprises the air inlet structure, the air return structure, the ventilation regulating component, the cleaning device and the air exhaust structure, and can realize ventilation in at least three modes, namely negative pressure ventilation, positive pressure ventilation and clean ventilation, wherein the three ventilation modes can be mutually switched, clean ventilation can be realized under the conventional condition, and the protection function can be quickly started under the emergency condition; the modularized movable shelter can realize modularization, is convenient to move and install, and can meet various use occasions such as fixed buildings, emergency buildings, movable large-scale shelter equipment and the like. The ventilation system of the embodiment is independent of the existing air conditioning system or heating and ventilation system of the building.
Furthermore, the embodiment of the invention also provides a ventilation method which comprises three mutually switchable ventilation modes, and the ventilation method has various ventilation modes and wide application range.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a ventilation system according to an embodiment of the present invention.
Reference numerals:
1: a fan; 2-1: a fifth valve; 2-2: a third valve; 2-3: a fourth valve; 2-4: a first valve; 2-5: a second valve; 3: a second air inlet branch; 4-1: a cleaning device; 4-2: a primary filter assembly; 4-3: a medium efficiency filter assembly; 4-4: a high efficiency filtration component; 4-5: an air duct; 5: an adjustment gate; 6: a disinfection and sterilization component; 7: a heat exchanger; 8-1: a first air gauge; 8-2: a second air gauge; 9: a control unit; 10: a main pipeline; 11: a ventilation regulating component; 12: a differential pressure gauge; 13: a building; 14: a first return air branch; 15: a second return air branch; 16: a first air inlet branch; 17: an air exhaust structure.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "front", "back", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
One embodiment of the present invention, shown in conjunction with fig. 1, provides a ventilation system comprising: the air inlet structure, the air return structure, the ventilation regulating component 11, the cleaning device 4-1 and the air exhaust structure 17. The air inlet structure comprises a first air inlet branch 16 and a second air inlet branch 3, wherein the first air inlet branch 16 is provided with a first valve 2-4 and is suitable for being communicated with the external environment; the air return structure is used for being connected with an air return side of a building 13 and comprises a first air return branch 14 and a second air return branch 15, and the first air return branch 14 is provided with a second valve 2-5 and is suitable for being communicated with the external environment; the ventilation regulating component 11 is arranged on a building 13, and the ventilation regulating component 11 is suitable for switching between a closed position and an open position, wherein the ventilation regulating component is hermetically connected with the building, and in the open position, air can be supplied into the building 13 or exhausted out of the building 13 through the ventilation regulating component; the cleaning device 4-1 comprises an air inlet end, an air outlet end and a disinfection and sterilization assembly arranged between the air inlet end and the air outlet end, the air inlet end is connected with a second return air branch 15 and a first air inlet branch 16, and the air outlet end is connected with the air inlet side of the building 13 through a second air inlet branch 3; the air exhaust structure 17 is connected with the air outlet end, and the air exhaust structure 17 is provided with a third valve 2-2 and is suitable for being communicated with the external environment.
The ventilation system in the embodiment has a simple structure, is suitable for independent installation on the existing building 13, has small modification on the building 13, is easy to design and construct, and is independent of the original air conditioning system of the building 13.
The ventilation system of the embodiment at least comprises the following three mutually-convertible ventilation modes, and has various functions and wide application range.
A first ventilation mode: the first valve 2-4 is closed to close the first branch air intake 16 (to prevent the first branch air intake 16 from taking in air), the second valve 2-5 is closed to close the first branch air return 14 (to prevent the first branch air return 14 from exhausting to the outside environment), the ventilation regulating member 11 is in the open position and can intake air into the building through the ventilation regulating member, the return air side of the building 13, the second branch air return 15, the cleaning device 4-1 and the air exhaust structure 17 are communicated, and the third valve 2-2 is opened to communicate the air exhaust structure 17 to the cleaning device 4-1 and the outside environment. In the first ventilation mode, air is supplied into the building 13 through the ventilation adjusting part 11, the air in the building 13 is discharged to the cleaning device 4-1 through the air return side, the cleaning device 4-1 is cleaned and filtered and then discharged into the external environment from the air exhaust structure 17, the ventilation device is suitable for the situation that the air in the external environment can be directly ventilated into the building 13 and the indoor air of the building 13 needs to be treated and then discharged, and the indoor air is cleaned, sterilized and then discharged by the cleaning device 4-1, so that the safety of the external environment is improved. At this time, the ambient pressure inside the building 13 is lower than the ambient pressure outside the building 13, and the ventilation adjusting member 11 is in a negative pressure state, so that the ambient air can smoothly enter the building 13. Alternatively, the ventilation regulating means 11 comprise a device for supplying air from the outside environment into the building 13, such as a fan cooperating with a non-return valve. The first ventilation mode is suitable for infectious disease hospitals, air discharged by the infectious disease hospitals is cleaned and then discharged, the transmission capacity of viruses is weakened, and cross infection is effectively avoided.
And a second ventilation mode: the third valve 2-2 is closed to close the air exhaust structure 17 (to prevent the air exhaust structure 17 from exhausting to the external environment), the second return air branch 15 is closed (to prevent the second return air branch 15 from exhausting to the cleaning device 4-1), the first valve 2-4 is opened to enable the first air inlet branch 16 to communicate with the cleaning device 4-1 and the external environment, the first air inlet branch 16, the cleaning device 4-1, the second air inlet branch 3 and the air inlet side are communicated, and the ventilation regulating component 11 is in the open position and can exhaust to the outside of the building through the ventilation regulating component. In the second ventilation mode, ambient air enters the cleaning device 4-1 through the first air inlet branch 16, the cleaning device 4-1 is cleaned and then sent to the air inlet side of the building 13 to supply clean air into the building 13, the air in the building 13 is exhausted through the ventilation regulating component 11, and the building 13 is convenient to exhaust air. At this time, the ambient pressure inside the building 13 is higher than the ambient pressure outside the building 13, the ventilation adjusting member 11 is in a positive pressure state, and the air inside the building 13 can be smoothly discharged to the outside environment. Alternatively, the ventilation regulating means 11 comprise a device for supplying air from inside the building 13 to the outside environment, such as a fan cooperating with a non-return valve. The second ventilation mode is suitable for situations with poor cleanliness of the external environment, such as severe air pollution or biochemical crisis, so that people in the building 13 can breathe clean air.
When the ventilation regulating component 11 is matched with the one-way valves through the fans, the ventilation regulating component 11 comprises two groups of fans and two groups of one-way valves, the two one-way valves respectively control the building to be conducted from inside to outside or from outside to inside, and each one-way valve is provided with one fan, so that the two states in the opening position can be switched. In the closed position, the one-way valve is closed.
A third ventilation mode: the first valve 2-4 is opened to enable the first air inlet branch 16 to be communicated with the cleaning device 4-1 and the external environment, the second valve 2-5 is opened to enable the first air return branch 14 to be communicated with the air return side and the external environment, and the first air inlet branch 16, the cleaning device 4-1, the second air inlet branch 3, the air inlet side, the air return side and the first air return branch 14 are communicated. In the third ventilation mode, the ventilation system enters air through the first air inlet branch 16, the inlet air is processed by the cleaning device 4-1 and then is sent to the building 13, and air in the building 13 is discharged through the first air return branch 14, so that clean inlet air is realized.
In general, when the third ventilation mode is in operation, the ventilation adjusting component 11 is in the closed position to prevent the external environment from ventilating with the environment inside the building 13, and ensure that the intake air of the building 13 is cleaned by the cleaning device 4-1 and then sent into the building 13.
In this embodiment, the in-process that the air passes through cleaning device 4-1 can pass through the disinfection subassembly that disinfects, and the disinfection subassembly carries out the disinfection back, and air quality promotes, avoids the virus diffusion.
The ventilation system of the embodiment comprises the three mutually switchable ventilation modes, the ventilation state can be switched quickly and conveniently, the switching can be realized by opening and closing adjustment of each valve, and when the ventilation system comprises the control unit 9, the switching of the protection state can be completed quickly through the control unit 9; the device has the functions of conventional ventilation and emergency ventilation, can clean and ventilate in the conventional condition, and can quickly start the protection function in the emergency condition; the structure of the ventilation system can realize modularization, is convenient to move and install, and can meet various use occasions such as fixed buildings, emergency buildings, movable large-scale masking equipment and the like. The ventilation system of the present embodiment is independent of an existing air conditioning system or heating and ventilation system of the building 13.
In one embodiment, the ventilation system further comprises a heat exchanger 7, the heat exchanger 7 comprising a first heat exchanging path connected to the first air intake branch 16 and a second heat exchanging path connected in parallel with the first heat exchanging path, the second heat exchanging path being connected to the first air return branch 14.
In the third ventilation mode, before air in the external environment enters the first air inlet branch 16, the air firstly enters the first heat exchange passage, before the air exhausted by the building 13 is exhausted into the external environment, the air is firstly exhausted into the second heat exchange passage, the exhaust air of the second heat exchange passage exchanges heat with the inlet air in the first heat exchange passage, the heat in the exhaust air is fully utilized, and the heat-air heat-exchange device is suitable for secondary utilization of the heat in the exhaust air in winter and the cold in the exhaust air in summer.
In the embodiment, the heat of the air exhausted from the interior of the building 13 is fully recovered, the influence on the operation of the heating, ventilation and air conditioning system is small, and the energy is saved and the consumption is reduced.
In the above embodiment, the cleaning device 4-1 has a filtering and cleaning function for cleaning particulate impurities such as dust in the air, or the cleaning device 4-1 has a sterilizing function for killing viruses in the air.
In one embodiment, the cleaning device 4-1 comprises one or more of a primary filter assembly 4-2, a middle filter assembly 4-3 and a high efficiency filter assembly 4-4, at least one of the primary filter assembly 4-2, the middle filter assembly 4-3 and the high efficiency filter assembly 4-4 is connected with an air inlet end and an air outlet end, and at least one of the primary filter assembly 4-2, the middle filter assembly 4-3 and the high efficiency filter assembly 4-4 is connected with a disinfection and sterilization assembly 6. Before the air is supplied to the building 13, the air can be filtered and disinfected in one stage or multiple stages in the cleaning device 4-1, so that the safe air inlet of the building 13 is ensured; or, after the air is exhausted out of the building 13, the air is subjected to one-stage or multi-stage filtration and disinfection in the cleaning device 4-1, so that the safety of the exhaust air of the building 13 is ensured.
Wherein, the disinfection and sterilization component 6 can be an ultraviolet lamp, an ozone generator or a photocatalysis sterilization device, etc.
When the cleaning device 4-1 comprises the primary filter component 4-2, the intermediate filter component 4-3 or the high-efficiency filter component 4-4, air can be filtered to different degrees when entering the cleaning device 4-1, and the disinfection and sterilization component 6 is used for disinfection and sterilization. When the cleaning device 4-1 comprises the primary filter assembly 4-2 and the intermediate filter assembly 4-3, and the disinfection and sterilization assembly 6 is arranged on at least one of the primary filter assembly 4-2 and the intermediate filter assembly 4-3, at this time, air can be discharged from the air outlet end after primary filtering and disinfection and sterilization are carried out on the air through the primary filter assembly 4-2, or the air can be discharged from the air outlet end after intermediate filtering and disinfection and sterilization are carried out on the air through the intermediate filter assembly 4-3, or the air can be selected according to actual needs after the air is subjected to two-stage filtering and disinfection and sterilization by the primary filter assembly 4-2 and the intermediate filter assembly 4-3. Similarly, when the cleaning device 4-1 includes the primary filter assembly 4-2 and the high efficiency filter assembly 4-4, or when the cleaning device 4-1 includes the intermediate filter assembly 4-3 and the high efficiency filter assembly 4-4, the same principle as above can be referred to.
When the cleaning device 4-1 comprises a primary filter assembly 4-2, a middle filter assembly 4-3 and a high-efficiency filter assembly 4-4, at this time, the primary filter assembly 4-2, the air inlet end, the middle filter assembly 4-3, the high-efficiency filter assembly 4-4 and the air outlet end are all provided with connecting pipelines, the middle filter assembly 4-3, the air inlet end, the high-efficiency filter assembly 4-4 and the air outlet end are provided with connecting pipelines, the high-efficiency filter assembly 4-4, the air inlet end and the air outlet end are provided with connecting pipelines, and the connecting pipelines can be adjusted in an on-off mode, so that air can enter the cleaning device 4-1 to be filtered through seven filter modes, wherein the seven filter modes comprise primary filter, middle filter, high-efficiency filter, primary and middle filter, primary and high-efficiency combined filter, and primary and high-efficiency combined filter, The medium-effect and high-efficiency combined filtration and the initial-effect and high-efficiency three-level combined filtration can be carried out, and the specific filtration mode can be selected according to the requirement.
In the embodiment, the sterilization assembly 6 can be connected to the primary filter assembly 4-2, but the sterilization assembly 6 is not limited to being connected to the primary filter assembly 4-2.
In one embodiment, when the cleaning device 4-1 comprises the primary filter assembly 4-2 and the intermediate filter assembly 4-3, a first on-off structure is arranged between the primary filter assembly 4-2 and the intermediate filter assembly 4-3, and the primary filter assembly 4-2 regulates the air flow direction. When the first on-off structure is opened, the primary filter component 4-2 is communicated with the intermediate filter component 4-3, so that the air is subjected to primary and intermediate two-stage filtration; when the first on-off structure is disconnected, the air is discharged from the air outlet end through primary filtering.
In this embodiment, the sterilization component 6 may be disposed on at least one of the primary filter component 4-2 and the intermediate filter component 4-3.
In one embodiment, when the cleaning device 4-1 comprises a primary filter component 4-2, a secondary filter component 4-3 and a high-efficiency filter component 4-4, a first on-off structure is arranged between the primary filter component 4-2 and the secondary filter component 4-3; a second on-off structure is arranged between the middle-effect filtering component 4-3 and the high-effect filtering component 4-4. When first break-make structure and second break-make structure all open, the air filters through just imitating, well effect and high-efficient combination, then discharges from the air-out end, and the filter effect is good. When the first on-off structure is disconnected, air is primarily filtered and then discharged from the air outlet end; when the first on-off structure is opened and the second on-off structure is disconnected, air is filtered through the primary effect and the middle effect, and then is discharged from the air outlet end.
Referring to fig. 1, the sterilizing assembly 6 is disposed on the primary filter assembly 4-2. The first on-off structure and the second on-off structure can be set as an adjusting door 5, air ducts 4-5 are arranged among the primary filtering component 4-2, the intermediate filtering component 4-3 and the high-efficiency filtering component 4-4, and the adjusting door 5 is used for adjusting the on-off of each air duct 4-5.
In the above embodiment, the filter elements in the primary filter assembly 4-2, the intermediate filter assembly 4-3 and the high-efficiency filter assembly 4-4 can be detached, cleaned or replaced, so as to ensure the cleaning effect. The sterilization component 6 can also be detached and replaced, so that the sterilization effect is ensured.
In the above embodiment, the primary filter assembly 4-2 is a G3 or G4 grade filter; the intermediate-effect filtering component 4-3 adopts an F5-F9 grade intermediate-effect filter; the high-efficiency filtering component 4-4 adopts one or a combination of a plurality of units of H13-grade high-efficiency filtering, H14-grade high-efficiency filtering, U15-grade super-efficiency filtering and toxic and harmful gas adsorption and absorption units filled with activated carbon materials; the adjusting door 5 adopts a civil air defense electric control airtight door.
Fourth ventilation mode of the ventilation system of the present embodiment: the first valve 2-4 is closed to close the first air inlet branch 16 (to prevent the first air inlet branch 16 from entering air), the second valve 2-5 is closed to close the first air return branch 14, the third valve 2-2 is closed to close the air exhaust structure 17, and the second air inlet branch 3, the air inlet side, the air return side, the second air return branch 15, the cleaning device 4-1 and the second air inlet branch 3 are sequentially communicated to form a circulation. At the moment, the cleaning device 4-1 comprises a primary filter component 4-2, a secondary filter component 4-3 and a high-efficiency filter component 4-4 which are sequentially communicated, air in the building 13 enters a ventilation system for circular cleaning, and the air in the building 13 can be periodically subjected to circular filtration and sterilization through three-stage filtration and sterilization.
In one embodiment, the return air structure comprises a main pipeline 10, one end of the main pipeline 10 is connected with the return air side, the other end of the main pipeline 10 is connected with a first return air branch 14 and a second return air branch 15, the first return air branch 14 and the second return air branch 15 share the main pipeline 10, the pipeline of the return air structure can be saved, and the cost reduction is facilitated.
The main pipeline 10 is connected with an air inlet end through a second air return branch 15, and a fourth valve 2-3 for on-off adjustment of the second air return branch 15 is arranged on the second air return branch 15. In this embodiment, the first air return branch 14 is provided with the second valves 2 to 5, and the second air return branch 15 is provided with the fourth valves 2 to 3, so that the first air return branch 14 and the second air return branch 15 can be conveniently and independently controlled.
Certainly, the other end of the main pipeline 10 can also be provided with a three-way valve, at this time, the first air return branch 14 does not need to be provided with the second valve 2-5 independently, the second air return branch 15 does not need to be provided with the fourth valve 2-3 independently, and the communication state of the air return structure is converted by adjusting the three-way valve, so that the structure is simplified.
In one embodiment, ventilation system still includes fan 1, and the air-out end is connected with fan 1, and the air intake of fan 1 is connected in the air-out end, promotes air flow among the ventilation system through setting up fan 1, and simple structure and convenient regulation and control. An air outlet of the fan 1 is connected with a second air inlet branch 3 and an air exhaust structure 17, a fifth valve 2-1 is arranged on the second air inlet branch 3, and the second air inlet branch 3 can be adjusted in an on-off state through the fifth valve 2-1.
Of course, the fan 1 may also be disposed at other positions of the ventilation system, such as the air inlet end, the air inlet structure or the air return structure of the cleaning device 4-1, which may be selected according to actual needs.
The valve in the above embodiment can be in various structural forms, and can be used for on-off adjustment, such as a gate valve, a butterfly valve and the like. When the ventilation system comprises the control unit 9, the valve can be an electromagnetic valve, so that the opening and closing states of the valve can be conveniently, remotely and automatically regulated and controlled.
In one embodiment, a control unit 9 is provided in the building 13, and the control unit 9 is used for controlling the on/off of the air inlet structure, the air return structure, the ventilation regulating component 11, the cleaning device 4-1 and the air exhaust structure 17.
That is, the first valve 2-4, the second valve 2-5, the third valve 2-2, the fourth valve 2-3 and the fifth valve 2-1 in the above embodiments are all connected to the control unit 9, and a user can remotely control the on-off of each valve in the building 13 to realize the switching between the ventilation modes. Of course, the fan 1 in the above embodiment is also connected to the control unit 9, and the control unit 9 can regulate the start and stop of the fan 1 and the rotation speed of the fan 1, so as to regulate the air flow state in the ventilation system. In addition, the cleaning device 4-1 in the above embodiment is also connected with the control unit 9, and the operation states of the primary filtering component 4-2, the intermediate filtering component 4-3, the high-efficiency filtering component 4-4 and the disinfecting and sterilizing component 6 of the cleaning device 4-1 can be remotely controlled by the control unit 9.
In one embodiment, at least one of the air inlet structure and the air return structure is provided with an air gauge to detect the air volume of the air inlet structure and the air return structure. The air gauge comprises a first air gauge 8-1 and a second air gauge 8-2, the first air gauge 8-1 is connected to the second air inlet branch 3, and the second air gauge 8-2 is connected to the main pipeline 10 to measure air quantities of an air inlet side and an air return side of the building 13.
In one embodiment, a differential pressure gauge 12 is disposed within building 13, and differential pressure gauge 12 is configured to measure a pressure difference between the interior of building 13 and an external environment, so that a user within building 13 can accurately know the pressure difference between the interior and exterior of building 13.
When the building 13 is provided with a plurality of rooms or passages, the differential pressure gauge 12 can be installed in each room or passage, thereby facilitating independent detection of a plurality of positional pressure differences.
Wherein, differential pressure gauge 12 also connects in control unit 9, and control unit 9 is equipped with the display, and the accessible display shows the pressure differential of each position, convenient centralized monitoring.
The ventilation regulating component 11 in the above embodiment can select a gas valve, and has good sealing effect and high safety protection level. When the air valve is an automatic overpressure air valve, the automatic overpressure air valve can automatically switch between a closed position and an open position according to pressure change.
The ventilation system in the above embodiment can be used in various buildings 13, such as hospitals, schools, office buildings or residential buildings, and the ventilation capacity of the ventilation system can be adjusted according to actual needs.
In another embodiment of the present invention, a ventilation method is further provided, in which the ventilation system in the above embodiment is adopted, and the ventilation system includes a first ventilation mode, a second ventilation mode and a third ventilation mode, which are switchable with each other.
A first ventilation mode: the first valve 2-4 is closed to close the first air intake branch 16, the second valve 2-5 is closed to close the first air return branch 14, the ventilation regulating member 11 is in the open position and can intake air into the building through the ventilation regulating member, the air return side, the second air return branch 15, the cleaning device 4-1 and the air exhaust structure 17 are communicated, and the third valve 2-2 is opened to communicate the air exhaust structure 17 with the cleaning device 4-1 and the external environment.
When the cleaning device 4-1 comprises a primary filter assembly 4-2, a medium filter assembly 4-3, a high-efficiency filter assembly 4-4 and a disinfection and sterilization assembly 6, air exhausted from the air return side of the building 13 is purified by the primary filter assembly 4-2, the medium filter assembly 4-3 and the high-efficiency filter assembly 4-4 and then exhausted to the external environment through an exhaust structure 17, negative pressure protection of the building 13 can be realized, when the pressure difference between the inside and the outside of the building 13 reaches a set value, a ventilation adjusting part 11 is automatically opened to ventilate the building 13, and a control unit 9 adjusts the rotating speed of the fan 1 and the opening degree of a fifth valve 2-1 according to a feedback signal of a differential pressure gauge 12. In this state, the disinfecting and sterilizing assembly 6 can be opened periodically to kill and inactivate pathogens.
In one embodiment, in the first ventilation mode, the cleaning device 4-1 communicates with the air inlet side via the second air inlet branch 3. After the air exhausted by the building 13 is cleaned by the cleaning device 4-1, one part of the air is exhausted to the external environment through the air exhaust structure 17, and the other part of the air is sent into the building 13 again through the second air inlet branch 3, so that the air is recycled, and the adjustment is simple and convenient.
And a second ventilation mode: the third valve 2-2 is closed to close the air exhaust structure 17, the second return air branch 15 is closed, the first valve 2-4 is opened to enable the first air inlet branch 16 to be communicated with the cleaning device 4-1 to be communicated with the external environment, the first air inlet branch 16, the cleaning device 4-1, the second air inlet branch 3 and the air inlet side are communicated, and the ventilation adjusting part 11 is in an open position and can exhaust air to the outside of the building through the ventilation adjusting part.
In one embodiment, in the second ventilation mode, the second valve 2-5 is opened to communicate the first return branch 14 with the outside environment. The air to be exhausted from the building 13 is partially exhausted directly to the external environment through the ventilation adjusting component 11, and the other part is exhausted to the external environment through the first air return branch 14 on the air return side, and the first air return branch 14 assists in exhausting air.
When the cleaning device 4-1 comprises a primary filter assembly 4-2, a secondary filter assembly 4-3, a high-efficiency filter assembly 4-4 and a disinfection and sterilization assembly 6, air in the external environment enters the cleaning device 4-1, is purified by the primary filter assembly 4-2, the secondary filter assembly 4-3 and the high-efficiency filter assembly 4-4 in sequence and then is sent into a building 13, when the pressure difference between the inside and the outside of the building 13 reaches a set value, a ventilation adjusting part 11 is automatically opened and exhausts the air to the external environment, and a control unit 9 adjusts the rotating speed of a fan 1 and the opening degree of a fourth valve 2-3 according to a feedback signal of a differential pressure gauge 12.
A third ventilation mode: the first valve 2-4 is opened to enable the first air inlet branch 16 to be communicated with the cleaning device 4-1 and the external environment, the second valve 2-5 is opened to enable the first air return branch 14 to be communicated with the cleaning device 4-1 and the external environment, and the first air inlet branch 16, the cleaning device 4-1, the second air inlet branch 3, the air inlet side, the air return side and the first air return branch 14 are communicated.
In one embodiment, when the ventilation system further includes the heat exchanger 7, the heat exchanger 7 includes a first heat exchange path connected to the first air intake branch 16 and a second heat exchange path connected to the first air return branch 14 in parallel with the first heat exchange path. In the third ventilation mode, before air in the external environment enters the first air inlet branch 16, the air firstly enters the first heat exchange passage, before the air exhausted by the building 13 is exhausted into the external environment, the air is firstly exhausted into the second heat exchange passage, and the exhaust air in the second heat exchange passage exchanges heat with the inlet air in the first heat exchange passage, so that the heat in the exhaust air is fully utilized, and the air conditioner is suitable for secondary utilization of the heat in the exhaust air in winter and the cold in the exhaust air in summer. In this embodiment, clean ventilation of the building 13 can be achieved, and the heat exchanger 7 sufficiently recovers heat of the air drawn from the interior of the building 13 to reduce the influence of the clean ventilation on the load of the hvac system.
In the above embodiments, the positive pressure and the negative pressure are the pressure difference between the internal environment and the external environment of the building, and the pressure is the positive pressure when the internal environment pressure of the building is greater than the external environment pressure, and the pressure is the negative pressure when the internal environment pressure of the building is less than the external environment pressure.
In one embodiment, shown in connection with fig. 1, the ventilation system is applied to the habitats of hospitals and the ventilation is performed in a first ventilation mode.
A hospital department is originally distributed in a medical care rest room, a duty room, a nurse station, a treatment room, a ward area and the like in sequence. In this embodiment, the department of living quarters is transformed into a negative pressure region (infectious disease treatment region), and the layout is performed according to the infectious disease medical procedure, and the negative pressure region is subdivided into: the cleaning area (medical care auxiliary area) comprises a medical care consultation room, a rest room, a duty room and the like, and the total area is about 150m2(ii) a The total area of a semi-polluted area (a medical care working area) is about 150m2The medical nursing system comprises a nurse station, a treatment room, a doctor office and a medical corridor connected with a ward area; polluted area (ward area), building area 800m2Including a plurality of wards and corridors.
Firstly, a common ward is transformed in a necessary sealing mode, an air inlet and an air outlet of an original ventilation system are sealed, an air conditioner air outlet is sealed (whether the air conditioner air outlet is sealed or not is determined according to actual conditions, a heat pump air conditioner and the like have no influence on building air tightness, the air conditioner air outlet can be unsealed), an outer window and a skylight are kept in a closed state, an efficient filtering assembly is installed at a toilet air outlet, an exhaust fan is normally opened, a door is normally closed, and building air tightness reaches more than four levels under the condition that a building door is closed after transformation. And secondly, a separation wall and an access door are arranged among the clean area, the semi-polluted area and the polluted area. The air outlet (air inlet side of building 13) of the air inlet structure of the ventilation system and the air inlet (air outlet side of building) of the air return structure are arranged at opposite positions at two ends of the corridor, and the fan is a variable-frequency control AF-900D4 type axial flow fan (with the impeller diameter of 900mm, the maximum rotating speed of 1450RPM, the blade inclination angle of 35 degrees and the maximum air quantity of 50000 m)3H, working air volume 30000m3The total pressure is 640Pa and the power is 7.5kW in the hour), and each valve adopts two flashlights with the drift diameter of 900mmA butterfly valve is used, a high-efficiency filter assembly adopts 48U 15-grade filter units, a middle-efficiency filter assembly adopts 24F 5-grade middle-efficiency filters, an initial filter assembly is a G4-grade plate filter, an adjusting door is an aluminum ship airtight door which is manually closed, a disinfection and sterilization assembly is 20 evenly distributed ozone generators (the ozone yield is 10G/h), a control unit develops and programs on an HC 32L 15 single chip microcomputer, an air inlet structure and an air return structure are pipelines which are assembled by corrugated steel plates and have the inner diameter of 900mm, a ventilation adjusting part is formed by modifying a civil air defense YF type automatic overpressure exhaust valve, the exhaust position of the ventilation adjusting part is changed into negative pressure air inlet from overpressure, a specific model is selected according to the exhaust air volume, the modified civil air defense YF-Dg200 type is installed on the wall of each ward, the civil air defense YF-Dg400 type is installed on an isolation wall of a pollution area, a semi-pollution area and a clean area, a differential pressure gauge 12 is a CSY-03B type wall hanging number differential pressure gauge, and has the functions.
Before starting the system, the regulating door is closed. The system is started through the control unit, the third valve and the fourth valve are completely opened, the fifth valve, the first valve and the second valve are closed, the fan is started, air discharged from the air return side of the building is purified through the primary filter assembly, the intermediate filter assembly and the high-efficiency filter assembly and then is discharged into the external environment through the third valve, and the fan is adjusted through the control unit to enable the air volume of the main pipeline of the air return structure to be kept at 30000m3H (i.e. the second air gauge displays a value of about 30000m3H), adjusting a fifth valve to ensure that the air volume of the second air inlet branch is kept at 25000m3H (i.e. the first air gauge displays a value of about 25000m3And h), manually adjusting a ventilation adjusting part on the partition wall to ensure that the pressure difference between the clean area and the semi-polluted area is 5Pa, the pressure difference between the semi-polluted area and the polluted area is also 5Pa, and adjusting the ventilation adjusting part on the ward wall to ensure that the opened overpressure is 10 Pa. Under the state, the negative pressure of the pollution area is at least 10Pa lower than the outside, the air change times of the negative pressure area reach 10 times per hour according to the space volume, the minimum requirement of obviously more than 6 air changes is met, the air change requirement of the negative pressure area is completely met, and the fresh air volume sent into the negative pressure area is 5000m3And h, completely meeting the breathing requirements of medical personnel and patients. In this state, each timeAnd starting the twice disinfection and sterilization assembly every day, and killing and inactivating pathogens trapped in the cleaning device.
The advantages of this embodiment are: the ventilation of large air volume improves the air quality of the negative pressure area, basically has no influence on the heating ventilation air conditioning system, has great advantages compared with the ventilation completely depending on fresh air, and meets the requirements of use in cold winter or severe summer season. The ventilation system of the embodiment is more suitable for the negative pressure area with the ward area being open, otherwise, the ventilation of the ward and the corridor needs to be enhanced so as to avoid unsmooth ventilation of the local space.
The ventilation system of the embodiment can be used for buildings for treating patients with severe infections, and the negative pressure area needs to be ventilated by large air volume so as to reduce the concentration of internal pathogens and prevent medical staff infection and cross infection of patients. And under the condition that whether the interior is infected or not and whether a person carries a pathogen or not, the building is intensively cleaned and ventilated so as to reduce the concentration of pathogenic microorganisms and reduce cross infection.
In another embodiment, shown in conjunction with FIG. 1, the instructional building is rapidly transitioned between the second ventilation mode and the third ventilation mode.
The teaching building is less than five kilometers away from a nuclear power station and is positioned in the downwind direction of monsoon, the building is three-layer high, the length of the teaching building is × m and the width of the teaching building is about 60m × m, classrooms are arranged in the middle of the teaching building and on two sides of a corridor, each layer of the teaching building is provided with 12 classrooms, each classroom can accommodate 50 students, and the whole teaching building is provided with 1800 students3H, working air volume 45000m3The total pressure is 680Pa and the power is 11 kW), each valve adopts a manual and electric butterfly valve with the drift diameter of 1000mm,the high-efficiency filter component adopts 36U 15-grade filter units, the middle-efficiency filter component adopts 18F 5-grade middle-efficiency filters, the primary filter component is a G4-grade plate filter, the adjusting door is a civil air defense DM 1020-type electric control sealed door, the disinfection and sterilization component is 20 uniformly distributed ozone generators (the ozone yield is 10G/h), the control unit develops and programs on the basis of an HC 32L 15 single chip microcomputer, the air inlet structure and the air return structure are steel pipes wrapped with heat insulation layers, the sectional area is about 1000mm, the ventilation adjusting component adopts a civil air defense YF-Dg 300-type automatic overpressure exhaust valve, two units are installed in each classroom and installed on the wall of each classroom, and the differential pressure meter is a CSY-03B-type wall-hung digital display differential pressure meter and has the functions of alarming and signal transmission.
When the air conditioner is used for cleaning ventilation, the control unit starts the system to enable the fifth valve, the first valve, the second valve and the adjusting valve to be completely opened, the third valve and the fourth valve to be closed, and air in the external environment enters a building after heat exchange through the heat exchange module. The fan is adjusted by the control unit, so that the air inlet volume of the second air inlet branch is about 45000m3H (i.e. the first air gauge display value is about 45000m3H), the air quantity reaches 25m per person3And h, meeting the fresh air requirement of students.
After receiving the accident alarm of the nuclear power station, the protection mode is quickly started, the classroom external window and the teaching building gate are closed and sealed as much as possible by using the adhesive tape, the fifth valve and the first valve are controlled to be opened by the control unit, the third valve, the fourth valve, the second valve and the regulating valve are closed, and the air in the external environment is purified by the primary filter assembly, the intermediate filter assembly and the high-efficiency filter assembly and then is sent into the building, so that the positive pressure protection of the building is realized. The control unit adjusts the rotating speed of the fan to ensure that the air quantity of the air inlet structure is not less than 20000m3H (i.e. the value of the first air gauge is not less than 20000m3H), the air quantity is not less than 11m for each person3And h, when the pressure difference between the inside and the outside of the building reaches 15Pa, the ventilation regulating component is automatically opened and exhausts the air to the external environment. If the display value of the differential pressure gauge is lower than 15Pa, the air leakage of the building is large, and the control unit can regulate and control the fan to increase the rotating speed of the fan until the display value of the differential pressure gauge reaches 15 Pa.
The ventilation system in the embodiment solves the problems that the building cannot be subjected to differential pressure protection and toxic material filtering ventilation. In cold winter or hot summer, when the outdoor temperature and the air quality are not suitable for ventilating the building, the air can be cleaned by a cleaning device and then sent into the building, or the air in the building is pumped out, filtered, sent again and purified by rapid circulation, so that the air is kept clean and sanitary, and the load of a heating ventilation air-conditioning system is not increased. When a nucleation accident occurs, the external environment may contain high-concentration radioactive aerosol and highly toxic chemical vapor, so that the building has an emergency shielding function, pollutants are prevented from diffusing into the building, and the breathing requirement of personnel in the building is met. Although a high overpressure cannot be generated in a building with poor sealing performance, the ventilation system of the embodiment also effectively prevents contaminants in the external environment from entering the interior of the building.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (10)
1. A ventilation system, comprising:
the air inlet structure comprises a first air inlet branch and a second air inlet branch, wherein the first air inlet branch is provided with a first valve and is suitable for being communicated with the external environment;
the air return structure is used for being connected with an air return side of a building and comprises a first air return branch and a second air return branch, and the first air return branch is provided with a second valve and is suitable for being communicated with the external environment;
the ventilation regulating component is arranged in the building and is suitable for switching between a closed position and an open position, the ventilation regulating component is hermetically connected with the building in the closed position, and air can be fed into the building or exhausted out of the building through the ventilation regulating component in the open position;
the cleaning device comprises an air inlet end, an air outlet end and a disinfection and sterilization assembly arranged between the air inlet end and the air outlet end, wherein the air inlet end is connected with the second air return branch and the first air inlet branch, and the air outlet end is connected with the air inlet side of a building through the second air inlet branch;
and the air exhaust structure is connected to the air outlet end, is provided with a third valve and is suitable for being communicated with the external environment.
2. The ventilation system of claim 1, further comprising a heat exchanger including a first heat exchange path connected to the first air intake branch and a second heat exchange path connected in parallel with the first heat exchange path, the second heat exchange path being connected to the first return air branch.
3. The ventilation system of claim 1, wherein the cleaning device comprises one or more of a primary filter assembly, a middle filter assembly and a high efficiency filter assembly, at least one of the primary filter assembly, the middle filter assembly and the high efficiency filter assembly is connected with the air inlet end and the air outlet end, and at least one of the primary filter assembly, the middle filter assembly and the high efficiency filter assembly is connected with the disinfection and sterilization assembly.
4. The ventilation system of claim 3, wherein a first on-off structure is arranged between the primary filter assembly and the intermediate filter assembly;
and/or a second on-off structure is arranged between the medium-efficiency filter component and the high-efficiency filter component.
5. The ventilation system according to claim 1, wherein the return air structure comprises a main pipeline, one end of the main pipeline is connected to the return air side, the other end of the main pipeline is connected to the first return air branch and the second return air branch, the main pipeline is connected to the air inlet end through the second return air branch, and a fourth valve for on-off adjustment of the second return air branch is arranged on the second return air branch.
6. The ventilation system according to claim 1, further comprising a fan, wherein the air outlet end is connected to the fan, an air inlet of the fan is connected to the air outlet end, an air outlet of the fan is connected to the second air inlet branch and the air exhaust structure, and a fifth valve is disposed on the second air inlet branch.
7. The ventilation system according to any one of claims 1 to 6, further comprising a control unit provided in the building, the control unit being configured to control on/off of the air intake structure, the air return structure, the ventilation regulating member, the cleaning device, and the air discharge structure.
8. The ventilation system as claimed in any one of claims 1 to 6, wherein at least one of the air inlet structure and the air return structure is provided with an air gauge;
and/or a differential pressure gauge is arranged in the building.
9. A ventilation method, characterized in that the ventilation system of any one of claims 1 to 8 is adopted, and comprises a first ventilation mode, a second ventilation mode and a third ventilation mode which can be switched mutually,
the first ventilation mode: the first valve is closed to enable the first air inlet branch to be closed, the second valve is closed to enable the first air return branch to be closed, the ventilation regulating component is in the open position and can supply air into the building through the ventilation regulating component, the air return side, the second air return branch, the cleaning device and the air exhausting structure are communicated, and the third valve is opened to enable the air exhausting structure to communicate the cleaning device with the external environment;
the second ventilation mode is as follows: the third valve is closed to enable the air exhaust structure to be closed, the second return air branch is closed, the first valve is opened to enable the first air inlet branch to be communicated with the cleaning device and the external environment, the first air inlet branch, the cleaning device, the second air inlet branch and the air inlet side are communicated, and the ventilation adjusting part is in the open position and can exhaust air to the outside of the building through the ventilation adjusting part;
the third ventilation mode: the first valve is opened to enable the first air inlet branch to be communicated with the cleaning device and the external environment, the second valve is opened to enable the first air return branch to be communicated with the air return side and the external environment, and the first air inlet branch, the cleaning device, the second air inlet branch, the air inlet side, the air return side and the first air return branch are communicated.
10. A ventilation method according to claim 9, characterized in that in the first ventilation mode, the cleaning device communicates with the air inlet side through the second air inlet branch;
and/or, in the second ventilation mode, the second valve is opened to communicate the first return branch with the external environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010498805.9A CN111397075B (en) | 2020-06-04 | 2020-06-04 | Ventilation system and ventilation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010498805.9A CN111397075B (en) | 2020-06-04 | 2020-06-04 | Ventilation system and ventilation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111397075A true CN111397075A (en) | 2020-07-10 |
| CN111397075B CN111397075B (en) | 2020-09-15 |
Family
ID=71433666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010498805.9A Active CN111397075B (en) | 2020-06-04 | 2020-06-04 | Ventilation system and ventilation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111397075B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183849A (en) * | 2020-08-24 | 2022-03-15 | 宁波奥克斯电气股份有限公司 | Cleaning system, control method of cleaning system and readable storage medium |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100525750B1 (en) * | 2004-05-19 | 2005-11-15 | 서번산업엔지니어링주식회사 | A device for a change of air |
| CN101922766A (en) * | 2009-12-31 | 2010-12-22 | 周云正 | Central air conditioner for air sterilization and purification |
| CN202254209U (en) * | 2011-08-17 | 2012-05-30 | 重庆贻科科技有限公司 | Energy-saving air conditioner |
| CN106288064A (en) * | 2016-10-27 | 2017-01-04 | 殷晓冬 | Modularity variable working condition medical air cleaning system |
| JP2017058041A (en) * | 2015-09-15 | 2017-03-23 | パナソニックＩｐマネジメント株式会社 | Air cleaner |
| CN108302624A (en) * | 2018-01-30 | 2018-07-20 | 山东联星能源集团有限公司 | A kind of energy-saving indoor purifying system |
| CN208536254U (en) * | 2018-07-04 | 2019-02-22 | 东莞市益安人防工程有限公司 | A Wartime Air Defense Facilities Ventilation System |
| CN109882949A (en) * | 2019-01-31 | 2019-06-14 | 上海市建筑科学研究院(集团)有限公司 | Temperature and Humidity Control controls mutually independent extrusion type air-conditioning system with indoor pollutant concentration purification |
| JP2019199989A (en) * | 2018-05-16 | 2019-11-21 | 三菱電機株式会社 | Ventilation device and ventilation system |
| CN209662478U (en) * | 2019-02-20 | 2019-11-22 | 扬州碧源人防工程有限公司 | The Multifunction ventilated system of underground civil defense engineering |
| CN209910064U (en) * | 2019-04-29 | 2020-01-07 | 浙江欧伦电气有限公司 | Bidirectional flow system composed of unidirectional flow fresh air dehumidifier and air exhaust box |
-
2020
- 2020-06-04 CN CN202010498805.9A patent/CN111397075B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100525750B1 (en) * | 2004-05-19 | 2005-11-15 | 서번산업엔지니어링주식회사 | A device for a change of air |
| CN101922766A (en) * | 2009-12-31 | 2010-12-22 | 周云正 | Central air conditioner for air sterilization and purification |
| CN202254209U (en) * | 2011-08-17 | 2012-05-30 | 重庆贻科科技有限公司 | Energy-saving air conditioner |
| JP2017058041A (en) * | 2015-09-15 | 2017-03-23 | パナソニックＩｐマネジメント株式会社 | Air cleaner |
| CN106288064A (en) * | 2016-10-27 | 2017-01-04 | 殷晓冬 | Modularity variable working condition medical air cleaning system |
| CN108302624A (en) * | 2018-01-30 | 2018-07-20 | 山东联星能源集团有限公司 | A kind of energy-saving indoor purifying system |
| JP2019199989A (en) * | 2018-05-16 | 2019-11-21 | 三菱電機株式会社 | Ventilation device and ventilation system |
| CN208536254U (en) * | 2018-07-04 | 2019-02-22 | 东莞市益安人防工程有限公司 | A Wartime Air Defense Facilities Ventilation System |
| CN109882949A (en) * | 2019-01-31 | 2019-06-14 | 上海市建筑科学研究院(集团)有限公司 | Temperature and Humidity Control controls mutually independent extrusion type air-conditioning system with indoor pollutant concentration purification |
| CN209662478U (en) * | 2019-02-20 | 2019-11-22 | 扬州碧源人防工程有限公司 | The Multifunction ventilated system of underground civil defense engineering |
| CN209910064U (en) * | 2019-04-29 | 2020-01-07 | 浙江欧伦电气有限公司 | Bidirectional flow system composed of unidirectional flow fresh air dehumidifier and air exhaust box |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183849A (en) * | 2020-08-24 | 2022-03-15 | 宁波奥克斯电气股份有限公司 | Cleaning system, control method of cleaning system and readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111397075B (en) | 2020-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212359240U (en) | Detachable movable negative pressure isolation ward | |
| US7251953B2 (en) | Environmental control unit for hospital room | |
| US7270691B2 (en) | Integrated air processing devices and isolation containment systems using such devices | |
| CN210717870U (en) | A modular medical isolation chamber and medical institution | |
| US20230031438A1 (en) | Air purification system and method for dynamic filtering and static sterilization and disinfection of central air conditioner | |
| US20080250800A1 (en) | Total room air purification system with air conditioning, filtration and ventilation | |
| JP6940896B1 (en) | Ventilation air conditioning system | |
| Segal-Maurer et al. | Environmental control of tuberculosis: continuing controversy | |
| CN111379449A (en) | Epidemic prevention isolation ward and epidemic prevention isolation ward group using same | |
| CN111397075B (en) | Ventilation system and ventilation method | |
| CN107812227A (en) | A kind of classroom intelligent disinfecting device | |
| CN118499876A (en) | Positive and negative pressure switching and purifying operating room air conditioning system and switching method | |
| CN213273079U (en) | Positive and negative pressure sampling isolation system | |
| CN212511662U (en) | Portable container formula negative pressure ward | |
| CN113007849A (en) | Intelligent negative pressure air disinfection chemical treatment unit and control method | |
| CN217131413U (en) | Air purification system | |
| CN212466434U (en) | Movable negative pressure isolation cabin | |
| CN215929961U (en) | A ventilation system suitable for a hospital room | |
| CN214822499U (en) | Automobile and air conditioner sterilizing device thereof | |
| CN113530310B (en) | Removable bio-isolation module | |
| TWI750653B (en) | Anti-epidemic All-Outer Air Operation Vehicle | |
| CN115228002A (en) | Container type biological safety isolation equipment and negative pressure control and airflow organization method thereof | |
| CN213955535U (en) | Movable biomedical isolation cabin | |
| CN209246289U (en) | A kind of indoor circulation blower fan structure | |
| CN213300394U (en) | Assembled air-conditioning air-sending and air-exhausting system for hospital ward |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |