CN109556224A - Positive/negative-pressure state judging method, fresh air system and the medium of fresh air system - Google Patents
Positive/negative-pressure state judging method, fresh air system and the medium of fresh air system Download PDFInfo
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- CN109556224A CN109556224A CN201811289138.2A CN201811289138A CN109556224A CN 109556224 A CN109556224 A CN 109556224A CN 201811289138 A CN201811289138 A CN 201811289138A CN 109556224 A CN109556224 A CN 109556224A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/40—Damper positions, e.g. open or closed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides positive/negative-pressure state judging method, fresh air system and the media of a kind of fresh air system.Wherein, this method comprises: adjusting the fresh air air outlet of current region or the aperture gear of returning air outlet；The air quality indexes after air quality indexes and the adjusting of aperture gear before being adjusted according to aperture gear, calculate the engineering equivalent erection space parameter of the current region；According to the comparison result of the engineering equivalent erection space parameter and the engineering actual installation area parameters of the current region, the positive and negative pressure condition of the current region is determined.Through the invention, solve the problems, such as that fresh air system judges inaccuracy to the positive and negative pressure condition in region in the related technology, improves fresh air system to the judgment accuracy of pressure condition positive and negative in region.
Description
Technical field
The present invention relates to building ventilation technical fields, judge in particular to a kind of positive and negative pressure condition of fresh air system
Method, fresh air system and medium.
Background technique
With the development of modern industry, we enjoy that development in science and technology bring is convenient, and consequent is industrial development
Influence to air quality is on the rise.Especially in China, although country is greatly developing environmental protection cause, in a short time
The haze serious problems in the most city in China can not be changed.Healthy, energy saving, simple and direct, reliable fresh air system and new wind devices at
For the focus of heating and ventilation project teacher and user's common concern.Fresh air is delivered to room by pipeline and air port by general fresh air system unit
It is interior.
Existing fresh air system is by control fresh air air outlet and return air in the positive and negative pressure condition control for carrying out region
The flow in air port controls.Under this control method, when the flow of fresh air air outlet is greater than returning air outlet, then system is recognized
Barotropic state is in for region；When the flow of fresh air air outlet is less than returning air outlet, then system thinks that region is in negative pressure shape
State.But in some cases, the room area of fresh air system be difficult to utterly with outer closures, therefore, in addition to fresh air
Outside air outlet and returning air outlet, it is also possible to which there are outside airs to be entered in region by the approach other than fresh air system, it is also possible to
Air spills into outside by the approach other than fresh air system in domain of the existence, and both of which influences whether the positive and negative of region
Pressure condition.
For example, system thinks that region is in barotropic state when the flow of fresh air air outlet is greater than returning air outlet, and at this time
External situation is spilt into if there is air in region, then actually region is likely to be in equilibrium air pressure state even negative pressure
State.
It can be seen that if only by fresh air air outlet and the flow of returning air outlet come the positive/negative-pressure shape in control area
There is control inaccuracy in state.
Summary of the invention
The present invention provides positive/negative-pressure state judging method, fresh air system and the media of a kind of fresh air system, at least to solve
Certainly fresh air system judges inaccurate problem to the positive and negative pressure condition in region in the related technology.
In a first aspect, the embodiment of the invention provides a kind of positive/negative-pressure state judging methods of fresh air system, comprising:
Adjust the fresh air air outlet of current region or the aperture gear of returning air outlet；
The air quality indexes after air quality indexes and the adjusting of aperture gear before being adjusted according to aperture gear, calculate institute
State the engineering equivalent erection space parameter of current region；
According to the ratio of the engineering equivalent erection space parameter and the engineering actual installation area parameters of the current region
Compared with as a result, and aperture gear regulative mode, determine the positive and negative pressure condition of the current region.
Second aspect, the embodiment of the invention provides a kind of positive/negative-pressure state judging devices, comprising:
Adjustment module, for adjusting the fresh air air outlet of current region or the aperture gear of returning air outlet；
Computing module, for the air quality indexes before being adjusted according to aperture gear and the air matter after the adjusting of aperture gear
Figureofmerit calculates the engineering equivalent erection space parameter of the current region；
Determining module, for the engineering actual installation according to the engineering equivalent erection space parameter and the current region
The comparison result of area parameters determines the positive and negative pressure condition of the current region.
The third aspect, the embodiment of the invention provides a kind of fresh air system, the system comprises: at least one processor,
The computer program instructions of at least one processor and storage in the memory, when the computer program instructions are by institute
State the method realized when processor executes as described in relation to the first aspect.
Fourth aspect, the embodiment of the invention provides a kind of computer readable storage mediums, are stored thereon with computer journey
Sequence instruction, method described in first aspect is realized when the computer program instructions are executed by processor.
Positive/negative-pressure state judging method, fresh air system and the medium of the fresh air system provided through the embodiment of the present invention, are adopted
With the aperture gear for the fresh air air outlet or returning air outlet for adjusting current region；Air quality before being adjusted according to aperture gear
Air quality indexes after index and the adjusting of aperture gear, calculate the engineering equivalent erection space parameter of the current region；Root
According to the comparison result of the engineering equivalent erection space parameter and the engineering actual installation area parameters of the current region, determine
The mode of the positive and negative pressure condition of the current region solves fresh air system in the related technology and judges the positive and negative pressure condition in region
The problem of inaccuracy, improves fresh air system to the judgment accuracy of pressure condition positive and negative in region.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the positive/negative-pressure state judging method of fresh air system according to an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the positive/negative-pressure state judging device of fresh air system according to an embodiment of the present invention；
Fig. 3 is the hardware structural diagram of the control section of fresh air system according to an embodiment of the present invention.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below, in order to make mesh of the invention
, technical solution and advantage be more clearly understood, with reference to the accompanying drawings and embodiments, the present invention is further retouched in detail
It states.It should be understood that described herein, the specific embodiments are only for explaining the present invention, is not intended to limit the present invention.For ability
For field technique personnel, the present invention can be implemented in the case where not needing some details in these details.It is right below
The description of embodiment is used for the purpose of better understanding the present invention to provide by showing example of the invention.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including described want
There is also other identical elements in the process, method, article or equipment of element.
A kind of positive/negative-pressure state judging method of fresh air system is provided in the present embodiment, and Fig. 1 is real according to the present invention
The flow chart of the positive/negative-pressure state judging method of the fresh air system of example is applied, as shown in Figure 1, the process includes the following steps:
Step S101 adjusts the fresh air air outlet of current region or the aperture gear of returning air outlet；
Step S102, the air quality after air quality indexes and aperture gear before being adjusted according to aperture gear are adjusted refer to
Mark, calculates the engineering equivalent erection space parameter of current region；
Step S103, according to the ratio of engineering equivalent erection space parameter and the engineering actual installation area parameters of current region
Compared with as a result, determining the positive and negative pressure condition of current region.
In above-mentioned step, engineering equivalent erection space parameter is calculated using air quality indexes, and real with engineering
Border mounting area parameter compares, and combines the regulative mode of last aperture gear, can determine the positive and negative of current region
Pressure condition.
Wherein, if current region and external environment have the gas that other approach in addition to fresh air system carry out and hands over
It changes, then will necessarily exist in other approach influences air quality indexes (including but not limited to gas concentration lwevel, PM2.5 concentration
Equal air quality indexes) polluter exchange.It, can be by the stream for calculating fresh air air outlet in above-mentioned steps of the invention
Amount and air quality indexes, calculate the amount for entering the polluter in current region by fresh air air outlet；It can be by calculating
The flow and air quality indexes of returning air outlet are calculated by the amount of the polluter outside returning air outlet discharge current region, root
According to the variation residual quantity of the air quality indexes of the variation residual quantity and its returning air outlet of polluter, it will be able to calculate current region
Engineering equivalent erection space parameter.
In the present embodiment, engineering equivalent erection space parameter is calculated in the following manner:
If the aperture gear of fresh air air outlet adjust before at the time of be T1, the aperture gear of fresh air air outlet adjust after when
Carving is T2, then the engineering equivalent erection space parameter A of current region is calculated by following equation:
Wherein, Q1T1For the flow of T1 moment fresh air outlet air, Q2T1For the flow of T1 moment returning air outlet, U1T1For the T1 moment
The air quality indexes of fresh air air outlet, U2T2And U2T1The respectively air quality indexes at T2 moment and T1 moment returning air outlet.
Since there are many types for air quality indexes, such as: gas concentration lwevel, PM2.5 concentration etc..In step S102
In, in the case where air quality indexes are multiple types, it is corresponding that each type of air quality indexes can be calculated separately
Engineering equivalent erection space parameter, and the greater is chosen in these engineering equivalent erection space parameters as will in step S103
The engineering equivalent erection space parameter used.
If engineering equivalent erection space parameter is larger compared to engineering actual installation area parameters, illustrate there is pollution
Substance enters in current region from other approach, and current region is in negative pressure state；If engineering equivalent erection space parameter phase
Smaller than in engineering actual installation area parameters, then there are polluters outside other approach spilling current region for explanation, currently
Region is in barotropic state；Furthermore it is also possible to be arranged when engineering equivalent erection space parameter falls into engineering actual installation area ginseng
When counting a neighbouring a small range, then illustrate that polluter is unobvious by other approach and exchanging for external environment, at this time
It is considered that current region is in equilibrium air pressure state, i.e. the air pressure of current region and external environment keeps balance.
Optionally, in the present embodiment, when engineering equivalent erection space parameter is equal to the k of engineering actual installation area parameters
Times when, determine that current region is in equilibrium air pressure state；Wherein, k times of ∈ [the practical peace of engineering of engineering actual installation area parameters
Fill area parameters-a, engineering actual installation area parameters+b], a, b are normal number.
Optionally, 0.75≤k≤1.25.At this point, a=b=0.25 × engineering actual installation area parameters.
The positive and negative pressure condition in region for combining above-mentioned positive/negative-pressure state judging method was controlled below by preferred embodiment
Journey is described.
If B1For engineering actual installation area parameters, minimum flow Q*, fresh air air outlet flow is Q1, returning air outlet stream
Amount is Q2, then has:
I, when pressure differential resetting condition is barotropic state
With Q*=1.5B1It synchronizes and issues initial opening to fresh air air outlet and returning air outlet, fresh air air outlet and returning air outlet
Adjust its air port aperture respectively according to Q*.
It enables:
Q1T1=Q2T1=Q*；
Q1T2=Q1T1+ air port aperture gear 1；I.e. the T2 moment increases 1 grade of fresh air air outlet aperture relative to the T1 moment；
Circulation step: engineering equivalent erection space parameter A is calculated, and compares A and B1；
Judgment step:
If 1, A=B1Then assignment Q1T3=Q1T2；
Issue Q1=Q1T3；
Exit circulation；
If 2, A > B1Then assignment Q1T3=Q1T2+ air port aperture gear 1；
Issue Q1=Q1T3；
Circulation step and judgment step are re-executed at the T4 moment after a period of time；
If 3, A≤0.8B1Then assignment Q1T3=Q1T2Air port aperture gear 1；
Issue Q1=Q1T3；
Circulation step and judgment step are executed again at the T4 moment after a period of time；
And if only if A≤0.8B1, and previous circulation is when jumping into from judgment step 2, to exit circulation；Or work as 0.8B1< A
< B1When exit circulation.
When II, pressure differential resetting condition negative pressure state
With Q*=1.5B1It synchronizes and issues initial opening to fresh air air outlet and returning air outlet, fresh air air outlet and returning air outlet
Adjust its air port aperture respectively according to Q*.
It enables:
Q1T1=Q2T1=Q*；
Q2T2=Q2T1+ air port aperture gear 1；I.e. the T2 moment increases 1 grade of returning air outlet aperture relative to the T1 moment；
Circulation step: engineering equivalent erection space parameter A is calculated, and compares A and B1；
Judgment step:
If 1, A=B1Then assignment Q1T3=Q1T2；
Issue Q2=Q2T3；
Exit circulation；
If 2, A < B1Then assignment Q2T3=Q2T2+ air port aperture gear 1；
Issue Q2=Q2T3；
Circulation step and judgment step are re-executed at the T4 moment after a period of time；
If 3,0.75A > B1Then assignment Q2T3=Q2T2Air port aperture gear 1；
Issue Q2=Q2T3；
Circulation step and judgment step are executed again at the T4 moment after a period of time；
And if only if 0.75A >=B1And previous circulation exits circulation when jumping into from judgment step 2；Or work as
When exit circulation.
When III, pressure differential resetting conditional equilibrium atmospheric pressure state
With Q*=1.5B1It synchronizes and issues initial opening to fresh air air outlet and returning air outlet, fresh air air outlet and returning air outlet
Adjust its air port aperture respectively according to Q*.
It enables:
Q1T1=Q2T1=Q*
Circulation step: engineering equivalent erection space parameter A is calculated, and compares A and B1；
Judgment step:
If 1,0.6B1< 0.75A < B1Then maintain Q1T1=Q2T1=Q*；
If 2,0.8B1< A then assignment Q2T3=Q2T2+ air port aperture gear 1；
Issue Q2=Q2T3；
Circulation step is executed again at the T3 moment after a period of time；
If 3,0.75A > B1Then assignment Q1T3=Q1T2+ air port aperture gear 1；
Issue Q1=Q1T3；
Circulation step is executed again at the T3 moment after a period of time.
Through the description to above-mentioned positive and negative pressure condition control process it is found that in traditional positive and negative pressure condition control process,
Default A=B1It is controlled, there is a problem of positive and negative pressure condition control inaccuracy.In conjunction with the positive/negative-pressure shape of the embodiment of the present invention
State judgment method can be improved the precision of positive and negative pressure condition control.
Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation
The method of example can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but it is very much
In the case of the former be more preferably embodiment.Based on this understanding, technical solution of the present invention is substantially in other words to existing
The part that technology contributes can be embodied in the form of software products, which is stored in a storage
In medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that a terminal device (can be mobile phone, calculate
Machine, server or network equipment etc.) method that executes each embodiment of the present invention.
A kind of positive/negative-pressure state judging device of fresh air system is additionally provided in the present embodiment, and the device is for realizing upper
State the positive/negative-pressure state judging method of fresh air system.Fig. 2 is that the positive and negative pressure condition of fresh air system according to an embodiment of the present invention is sentenced
The structural schematic diagram of disconnected device, as shown in Fig. 2, the device includes:
Adjustment module 21, for adjusting the fresh air air outlet of current region or the aperture gear of returning air outlet；
Computing module 22, for the air quality indexes before being adjusted according to aperture gear and the air after the adjusting of aperture gear
Quality index calculates the engineering equivalent erection space parameter of current region；
Determining module 23, for being joined according to the engineering actual installation area of engineering equivalent erection space parameter and current region
Several comparison results determines the positive and negative pressure condition of current region.
In addition, the positive/negative-pressure state judging method in conjunction with the fresh air system of Fig. 1 embodiment of the present invention described can be by new
Wind system is realized.Fig. 3 shows the hardware structural diagram of the control section of fresh air system provided in an embodiment of the present invention.
The control section of fresh air system may include processor 31 and the memory 32 for being stored with computer program instructions.
Specifically, above-mentioned processor 31 may include central processing unit (CPU) or specific integrated circuit
(Application Specific Integrated Circuit, ASIC), or may be configured to implement implementation of the present invention
One or more integrated circuits of example.
Memory 32 may include the mass storage for data or instruction.For example it rather than limits, memory
32 may include hard disk drive (Hard Disk Drive, HDD), floppy disk drive, flash memory, CD, magneto-optic disk, tape or logical
With the combination of universal serial bus (Universal Serial Bus, USB) driver or two or more the above.It is closing
In the case where suitable, memory 32 may include the medium of removable or non-removable (or fixed).In a suitable case, memory
32 can be inside or outside data processing equipment.In a particular embodiment, memory 32 is non-volatile solid state memory.?
In specific embodiment, memory 32 includes read-only memory (ROM).In a suitable case, which can be masked edit program
ROM, programming ROM (PROM), erasable PROM (EPROM), electric erasable PROM (EEPROM), electrically-alterable ROM (EAROM)
Or the combination of flash memory or two or more the above.
Processor 31 is by reading and executing the computer program instructions stored in memory 32, to realize above-described embodiment
In any one fresh air system positive/negative-pressure state judging method.
In one example, the control section of fresh air system may also include communication interface 33 and bus 30.Wherein, such as Fig. 3
Shown, processor 31, memory 32, communication interface 33 connect by bus 30 and complete mutual communication.
Communication interface 33 is mainly used for realizing in the embodiment of the present invention between each module, device, unit and/or equipment
Communication.
Bus 30 includes hardware, software or both, and the component of fresh air system and its control section is coupled to each other together.
For example it rather than limits, bus may include accelerated graphics port (AGP) or other graphics bus, enhancing Industry Standard Architecture
(EISA) bus, front side bus (FSB), super transmission (HT) interconnection, Industry Standard Architecture (ISA) bus, infinite bandwidth interconnect, are low
Number of pins (LPC) bus, memory bus, micro- channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-
Express (PCI-X) bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association part (VLB) bus or
The combination of other suitable buses or two or more the above.In a suitable case, bus 30 may include one
Or multiple buses.Although specific bus has been described and illustrated in the embodiment of the present invention, the present invention considers any suitable bus
Or interconnection.
The fresh air system can execute the positive/negative-pressure shape of the fresh air system in the embodiment of the present invention based on the data got
State judgment method, to realize the method described in conjunction with Fig. 1.
In addition, in conjunction with the positive/negative-pressure state judging method of the fresh air system in above-described embodiment, the embodiment of the present invention can be mentioned
It is realized for a kind of computer readable storage medium.Computer program instructions are stored on the computer readable storage medium；It should
Realize that the positive and negative pressure condition of any one fresh air system in above-described embodiment is sentenced when computer program instructions are executed by processor
Disconnected method.
In conclusion through the above embodiments of the present invention, realizing the accurate judgement of the positive and negative pressure condition in region, Neng Gouti
The accuracy that high fresh air system controls pressure condition positive and negative in region.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of positive/negative-pressure state judging method of fresh air system characterized by comprising
Adjust the fresh air air outlet of current region or the aperture gear of returning air outlet；
According to the air quality indexes before the adjusting of aperture gear and the air quality indexes after the adjusting of aperture gear, work as described in calculating
The engineering equivalent erection space parameter of forefoot area；
According to the engineering equivalent erection space parameter compared with the engineering actual installation area parameters of the current region knot
Fruit determines the positive and negative pressure condition of the current region.
2. the method according to claim 1, wherein the air quality indexes include at least one of:
PM2.5 concentration, gas concentration lwevel.
3. the method according to claim 1, wherein before being adjusted according to the aperture gear of the fresh air air outlet
Air quality indexes after the adjusting of the aperture gear of air quality indexes and the fresh air air outlet, calculate the current region
Engineering equivalent erection space parameter includes:
If at the time of the aperture gear of the fresh air air outlet adjusts preceding being T1, after the aperture gear of the fresh air air outlet is adjusted
At the time of be T2, then the engineering equivalent erection space parameter A of the current region pass through following equation calculate:
Wherein, Q1T1For the flow of fresh air outlet air described in the T1 moment, Q2T1For the flow of returning air outlet described in the T1 moment, U1T1For T1
The air quality indexes of fresh air air outlet, U2 described in momentT2And U2T1Respectively returning air outlet described in T2 moment and T1 moment
Air quality indexes.
4. according to the method described in claim 3, it is characterized in that, before being adjusted according to the aperture gear of the fresh air air outlet
Air quality indexes after the adjusting of the aperture gear of air quality indexes and the fresh air air outlet, calculate the current region
Engineering equivalent erection space parameter further include:
In the case where the air quality indexes are multiple types, it is corresponding to calculate separately each type of air quality indexes
Engineering equivalent erection space parameter, and the greater is chosen in these engineering equivalent erection space parameters as the equivalent peace of the engineering
Fill area parameters.
5. the method according to claim 1, wherein being worked as according to the engineering equivalent erection space parameter with described
The comparison result of the engineering actual installation area parameters of forefoot area determines that the positive and negative pressure condition of the current region includes:
When the engineering equivalent erection space parameter is greater than the engineering actual installation area parameters, the current region is determined
In negative pressure state.
6. the method according to claim 1, wherein being worked as according to the engineering equivalent erection space parameter with described
The comparison result of the engineering actual installation area parameters of forefoot area determines that the positive and negative pressure condition of the current region includes:
When the engineering equivalent erection space parameter is less than the engineering actual installation area parameters, the current region is determined
In barotropic state.
7. the method according to claim 1, wherein being worked as according to the engineering equivalent erection space parameter with described
The comparison result of the engineering actual installation area parameters of forefoot area determines that the positive and negative pressure condition of the current region includes:
When the engineering equivalent erection space parameter is equal to k times of the engineering actual installation area parameters, work as described in determination
Forefoot area is in equilibrium air pressure state；
Wherein, k times of ∈ [engineering actual installation area parameters-a, the engineering actual installation of the engineering actual installation area parameters
Area parameters+b], a, b are normal number.
8. the method according to the description of claim 7 is characterized in that 0.75≤k≤1.25.
9. a kind of positive/negative-pressure state judging device of fresh air system characterized by comprising
Adjustment module, for adjusting the fresh air air outlet of current region or the aperture gear of returning air outlet；
Computing module refers to for the air quality indexes before being adjusted according to aperture gear and the air quality after the adjusting of aperture gear
Mark, calculates the engineering equivalent erection space parameter of the current region；
Determining module, for the engineering actual installation area according to the engineering equivalent erection space parameter and the current region
The comparison result of parameter determines the positive and negative pressure condition of the current region.
10. a kind of fresh air system, which is characterized in that the system comprises: at least one processor, at least one processor and
The computer program instructions of storage in the memory, are realized when the computer program instructions are executed by the processor
Such as method of any of claims 1-8.
11. a kind of computer readable storage medium, is stored thereon with computer program instructions, which is characterized in that when the calculating
Such as method of any of claims 1-8 is realized when machine program instruction is executed by processor.
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| CN201505655U (en) * | 2009-08-26 | 2010-06-16 | 黄荣芳 | Device capable of preventing pernicious gas from leaking |
| CN102043871A (en) * | 2009-10-26 | 2011-05-04 | 中南大学 | Method for solving aerodynamic effect of long tunnel or tunnel group |
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