CN109838871A - Detect the method and fresh air system of room airtightness - Google Patents
Detect the method and fresh air system of room airtightness Download PDFInfo
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- CN109838871A CN109838871A CN201711217529.9A CN201711217529A CN109838871A CN 109838871 A CN109838871 A CN 109838871A CN 201711217529 A CN201711217529 A CN 201711217529A CN 109838871 A CN109838871 A CN 109838871A
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- 238000005516 engineering process Methods 0.000 description 3
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Abstract
This application discloses the methods and fresh air system of detection room airtightness.Wherein, a specific embodiment of this method includes: acquisition room volume；By blower from outdoor to interior air-supply；The indoor pressure difference with outdoor of detection and the outdoor intake velocity to indoor air-supply；Closed coefficient is generated by default detection model according to room volume, above-mentioned pressure difference and intake velocity, wherein closed coefficient and room volume are positively correlated, and are positively correlated with pressure difference, with intake velocity negative correlation；Room airtightness is shown based on closed coefficient.The validity of fresh air system supply fresh air can be improved in the embodiment.
Description
Technical field
This application involves method and the fresh air systems of fresh air system applied technical field, more particularly to detection room airtightness
System.
Background technique
A set of independent air processing system that fresh air system is made of supply air system and exhaust system, it is according to close
Fresh air is sent to interior with special equipment in the indoor side closed, then from the other side from special equipment to outdoor discharge, indoors can shape
At " fresh air field of flow ", to meet the needs of indoor fresh air ventilating.Generally, fresh air system uses high wind pressure, big flow wind
Machine, by mechanical strength from a side to indoor air-supply, from the other side with the exhaust fan specially designed to the mode of outdoor discharge
Force the formation fresh air field of flow in system.Air-supply while to the air entered the room into filter, the poison that goes out, sterilization, oxygenation,
Preheat at least one of (winter) etc. operation.And in practical application, the airtightness in room directly affects the use of fresh air system
Effect, for example, door, window gap are excessive, it is outdoor that indoor fresh air can pass through gap exudation.Therefore, it is necessary to using fresh air system
The airtightness in room carries out quantization detection, for adjusting the airtightness in room according to the room airtight performance of quantization, improves fresh air
The validity of system supply fresh air.
Summary of the invention
The purpose of the application is to propose the method and fresh air system of a kind of improved detection room airtightness, come solve with
The technical issues of upper background technology part is mentioned.
In a first aspect, the embodiment of the present application provides a kind of method for detecting room airtightness, wherein the method packet
It includes: obtaining room volume；By blower from outdoor to interior air-supply；Indoor and outdoor pressure difference and outdoor are detected to interior
The intake velocity of air-supply；It is generated according to the room volume, the pressure difference and the intake velocity by default detection model
Closed coefficient, wherein the closed coefficient and the room volume are positively correlated, and are positively correlated with the pressure difference, with the air inlet
Speed is negatively correlated；Room airtightness is shown based on the closed coefficient.
In some embodiments, the detection model includes: that closed coefficient is equal to room volume multiplied by indoor and outdoor
Pressure difference is divided by intake velocity.
In some embodiments, the indoor pressure difference with outdoor includes: that subtract initial pressure poor for current pressure difference,
In, the initial pressure difference be from outdoor to interior air-supply before interior and outdoor pressure difference.
In some embodiments, the detection model is obtained by Function Fitting method；Specifically includes the following steps: passing through
It adjusts power of fan and outdoor is successively adjusted to maximum value from 0 to the intake velocity of interior air-supply；The indoor pressure with outdoor of monitoring
Difference with the intake velocity change；By it is indoor with pressure outside difference curve and intake velocity curve to the monitoring model into
Line function fitting, so that all the same according to the closed coefficient that any one point calculates on intake velocity curve.
In some embodiments, the detection model after being fitted by Function Fitting method includes: that closed coefficient is equal to room
Volume is multiplied by the deconv about indoor and outdoor pressure difference with the multinomial about intake velocity.
In some embodiments, it is described based on the closed coefficient show room airtightness include: calculate closed coefficient with
The ratio of the closed coefficient of standard；The ratio is showed into user.
Second aspect, present invention also provides a kind of fresh air system, the fresh air system includes: acquisition module, and configuration is used
In acquisition room volume；Blower, for from outdoor to interior air-supply；Detection module is configured to the indoor pressure with outdoor of detection
Power difference and the outdoor intake velocity to indoor air-supply；Generation module is configured to according to the room volume, the pressure difference
Closed coefficient is generated by default detection model with the intake velocity, wherein the closed coefficient and the room volume are just
Correlation is positively correlated with the pressure difference, negatively correlated with the intake velocity；Display module is configured to based on the closed system
Number shows room airtightness.
In some embodiments, the indoor pressure difference with outdoor includes: that subtract initial pressure poor for current pressure difference,
In, the initial pressure difference be from outdoor to interior air-supply before interior and outdoor pressure difference.
In some embodiments, the display module includes: computing unit, is configured to calculate closed coefficient close with standard
Close the ratio of coefficient；Display unit is configured to the ratio showing user.
Then the method and fresh air system of detection room airtightness provided by the present application are passed through by obtaining room volume
Blower detects the indoor pressure difference with outdoor and the outdoor intake velocity to indoor air-supply from outdoor to interior air-supply, connects
Default detection model passed through according to room volume, above-mentioned pressure difference and intake velocity generate closed coefficient, wherein closed coefficient
It is positively correlated with room volume, is positively correlated with above-mentioned pressure difference, room is then shown based on closed coefficient with intake velocity negative correlation
Between airtightness.Due to being quantified room airtightness by default detection model, for according to the room airtight performance of quantization
The airtightness in room is adjusted, so as to improve the validity of fresh air system supply fresh air.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1 shows the flow chart of the method for the detection room airtightness according to the embodiment of the present application；
Fig. 2 is the application scenarios schematic diagram according to the detection room airtightness of the embodiment of the present application；
Fig. 3 is the structural schematic diagram according to the fresh air system of the detection room airtightness of the embodiment of the present application.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, part relevant to related invention is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 shows the process 100 of the method for the detection room airtightness using one embodiment of the application.In this reality
It applies in example, which can be applied to the fresh air system with certain data-handling capacity.The process 100 includes following step
It is rapid:
Step 101, room volume is obtained.
In the present embodiment, fresh air system can pass through acquisition equipment or locally-stored data acquisition room volume.
For acquiring equipment, following at least one: keyboard, touch screen, microphone, etc. can include but is not limited to.Fresh air system
System can receive the room area of user's input by least one of keyboard, touch screen, microphone and the high data of layer calculate
Room volume can also directly receive the room volume data of user's input.Fresh air system can also store multiple room bodies
Volume data determines room area by selecting for user.The application does not limit this.
Step 102, by blower from outdoor to interior air-supply.
It is appreciated that the pressure difference in room and outside room is little, it is difficult to measure room when not using fresh air system
Leakproofness.After fresh air system starting, need filtered air being sent into interior, to form fresh air indoors
It is long, and make interior that there is certain normal pressure relative to outdoor, at this point, if room does not have closed (such as door or window are opened),
Normal pressure is difficult to be formed, if room is completely closed, the formation of normal pressure is related with intake.Therefore, in the present embodiment,
Above-mentioned fresh air system can be further by blower from outdoor to interior air-supply.
Step 103, the indoor pressure difference with outdoor of detection and the outdoor intake velocity to indoor air-supply.
In the present embodiment, above-mentioned fresh air system can pass through blower from outdoor to while the air-supply of interior, and detection is sent
The indoor pressure difference with outdoor and the outdoor intake velocity to indoor air-supply during wind.
Wherein, indoor and outdoor pressure difference, which can be, is acted on by the blower air-supply of fresh air system by interior and outdoor
The pressure difference value of pressure change.The pressure difference value can be detected by differential pressure pickup, such as the pressure of differential pressure pickup one end
Sensor is set to outdoor, and the pressure sensor of the other end is set to interior.Wherein, indoor can be with outdoor pressure difference works as cup
The interior difference with outdoor pressure sensor detection pressure value, is also possible to interior compared with outdoor initial pressure difference,
The pressure value of change.Specifically, it is assumed that the pressure difference of in room and outdoor differential pressure pickup is x Pascal when fresh air system starts
Pa, it is indoor to become (x+y) Pa with outdoor pressure difference after new blower is opened.In outdoor calm situation, pressure difference x=
0Pa, in the case where there is wind environment: if differential pressure pickup is in windward side, due to outdoor wind pressure, the outdoor pressure that is bound to can be greater than room
Interior pressure, pressure difference x will be negatives, if differential pressure pickup is mounted in leeward, pressure difference x will be positive number.Here, lead to
It crosses the interior of fresh air system change and outdoor pressure difference value is y Pa.
Interior can be the value of setting to outdoor air supply velocity, such as set air supply velocity as 1 cubic meters per second, can also
To be the value of practical measurement, such as measure the air velocity etc. of each moment air inlet.
Step 104, closed system is generated by default detection model according to room volume, above-mentioned pressure difference and intake velocity
Number.
In the present embodiment, detection model can be preset in above-mentioned fresh air system, to according to room volume, interior and
The closed coefficient of outdoor pressure difference, intake velocity generation room.Wherein, closed coefficient and room volume are positively correlated, with interior
It is positively correlated with outdoor pressure difference, with intake velocity negative correlation.
Wherein, closed coefficient can be the parameter for quantitatively evaluating room sealing performance.If being understood that room body
Product is certain, and intake velocity is certain, then room sealing performance is better, indoor to reach certain pressure with outdoor by certain time
Difference is bigger, thus, closed coefficient and the indoor pressure difference with outdoor are positively correlated；If room volume is certain, room leakproofness
Can be better, indoor to reach certain pressure difference by certain time with outdoor, intake velocity is smaller, thus, closed coefficient with into
Wind velocity is negatively correlated；If intake velocity is certain, room sealing performance is certain, the bigger room of volume, indoor and outdoor process
The pressure difference that certain time reaches is smaller, thus, room volume and the indoor pressure difference negative correlation with outdoor, also that is, room body
Long-pending and closed coefficient is negatively correlated.
Detection model can be manually set, and can also be obtained by machine learning method.For example, in some implementations, it can
It is equal to room volume multiplied by indoor and outdoor pressure difference divided by intake velocity to set closed coefficient.Such as: closed coefficient A=V
× P/X, wherein V indicates that room volume, unit can be cubic meter；P indicates that the indoor pressure difference with outdoor, unit can be
Pascal；X indicates intake velocity, and unit can be cubic meter per hour.In other realizations, detection model can pass through letter
Number approximating method obtains；Specifically, in the room of certain volume: by adjust power of fan by outdoor to interior air-supply into
Wind velocity is successively adjusted to maximum value from 0；Monitoring interior is with outdoor pressure difference with the change of intake velocity；By indoor and outdoor
Pressure difference curve and intake velocity curve carry out Function Fitting to monitoring model, so that according to any one point on intake velocity curve
The closed coefficient calculated is all the same.Optionally, in the detection model after fitting, closed coefficient can be equal to room volume multiplied by pass
In the deconv of interior and outdoor pressure difference with the multinomial about intake velocity.For example, the detection model example after fitting
It such as can be closed coefficient A=(P+p1)×V÷(X+x1), wherein P indicates the indoor pressure difference with outdoor, and V indicates room body
Product, X indicate intake velocity.And p1(unit is Pascal), x1(unit be cubic meter per hour), is to obtain in Function Fitting
Constant adjustment parameter.In detection model after fitting, about indoor with the multinomial of outdoor pressure difference and about air inlet speed
The multinomial of degree can also be other forms, such as the multinomial (c × intake velocity X+x about intake velocity1, c is to be fitted
The adjustment factor arrived), it no longer enumerates herein.
Step 105, room airtightness is shown based on above-mentioned closed coefficient.
In the present embodiment, above-mentioned fresh air system can also further the closed coefficient according to obtained in step 104 to room
Between airtightness be shown.Wherein, displaying here can be text displaying, voice displaying etc., and the application is without limitation.
Above-mentioned closed coefficient directly can be shown as room leakproofness referential data by above-mentioned fresh air system, can also be shown
The ratio of above-mentioned closed coefficient and the closed coefficient of standard is room leakproofness referential data, wherein the closed coefficient of standard can be
The closed coefficient value that room measures in the case of being completely closed, the application do not limit this.Above-mentioned fresh air system can also store
By preset closed coefficient threshold, closed coefficient threshold is preset when closed coefficient is greater than, the good prompt of leakproofness is provided, when close
Envelope coefficient, which is less than, presets closed coefficient threshold, provides the prompt for improving leakproofness, the application to this also without limitation.
Fig. 2 shows application scenarios according to the detection room airtightness of the embodiment of the present application, it is assumed that pacifies in room 201
The leakproofness in room 201 can be first detected after fresh air system 202 is installed equipped with fresh air system 202.Specifically, fresh air system
202 can first obtain the room volume in the room 201, such as obtain the usable floor area and layer height in the room 201 of user's input, lead to
It crosses and does multiplying and obtain the room volume in room 201；Then, fresh air system 202 can by blower by air inlet 2021 from
Outdoor can detect interior by differential pressure pickup 2022 and send with outdoor pressure difference and outdoor to interior to indoor air-supply
The intake velocity of wind；Then, the pressure difference that fresh air system can be measured according to 201 room volume of room, differential pressure pickup 2022
The intake velocity of (the e.g. difference of current pressure difference and initial pressure difference) and air inlet 2021 is raw by default detection model
At closed coefficient, wherein closed coefficient and room volume are positively correlated, and are positively correlated with pressure difference, with intake velocity negative correlation；So
Afterwards, fresh air system 202 can show the room airtightness in room 201 according to closed coefficient.For example, it is assumed that fresh air system
The ratio of closed coefficient and the closed coefficient of standard is showed user for room leakproofness referential data by 202, if the value is
0.5, the airtightness in room 201 is poor, and whether user can be opened with inspection door, window, if has hole etc., if the value is
0.99, the airtightness in room 201 is preferable, then user can fresh air system safe to use, if the value be 0.85, room 201 it is close
Closing property is qualified, then user oneself, which can choose, is adjusted to room airtightness or directly uses fresh air system.
The method of the detection room airtightness of the present embodiment, can according to room volume, it is indoor with outdoor pressure difference, into
Wind velocity is quantified room airtightness by default detection model, for adjusting room according to the room airtight performance of quantization
Between airtightness, improve fresh air system supply fresh air validity.
Referring to FIG. 3, it illustrates the fresh air system 300 according to the application one embodiment.As shown in figure 3, fresh air system
System 300, which includes at least, obtains module 301, blower 302, detection module 303, generation module 304 and display module 305.Wherein, it obtains
Modulus block 301 may be configured to obtain room volume；Blower 302 can be used for from outdoor to interior air-supply；Detection module 303
It may be configured to the indoor pressure difference with outdoor of detection and the outdoor intake velocity to indoor air-supply；Generation module 304 can
To be configured to generate closed coefficient by default detection model according to room volume, above-mentioned pressure difference and intake velocity, wherein
Closed coefficient and room volume are positively correlated, and are positively correlated with above-mentioned pressure difference, with intake velocity negative correlation；Display module 305 can be with
It is configured to show room airtightness based on closed coefficient.
In the present embodiment, obtaining module 301 can be by acquisition equipment or locally-stored data acquisition room body
Product.Here acquisition equipment for example can include but is not limited to following at least one: keyboard, touch screen, microphone, etc..
In the present embodiment, when not using fresh air system, the pressure difference in room and outside room is little, it is difficult to measure
The leakproofness in room therefore can be in the leakproofness survey by blower 302 from outdoor to progress room during the air-supply of interior
Amount.Wherein, west is acted in blower 302, air can be from the outside into the room by air inlet 306.
In the present embodiment, detection module 303, from outdoor to while the air-supply of interior, can be detected by blower 302
The indoor pressure difference with outdoor and the outdoor intake velocity to indoor air-supply in air supply process.Wherein, the indoor pressure with outdoor
Power difference can be carried out by differential pressure pickup 303.It outdoor can be by wind speed measurement unit, such as to the intake velocity of indoor air-supply
The measurement such as air velocity transducer can also determine that the application is not limited this according to the operating power of blower 302.Optionally, room
Interior may include: that subtract initial pressure poor for current pressure difference with outdoor pressure difference, wherein initial pressure difference be from outdoor to
Interior and outdoor pressure difference before indoor air-supply.
In the present embodiment, detection model can be preset in generation module 304, to according to room volume, interior and
The closed coefficient of outdoor pressure difference, intake velocity generation room.Wherein, closed coefficient and room volume are positively correlated, with interior
It is positively correlated with outdoor pressure difference, with intake velocity negative correlation.Detection model can be manually set, and can also pass through machine learning
Method obtains.For example, in some implementations, closed coefficient can be set equal to room volume multiplied by the indoor pressure difference with outdoor
Divided by intake velocity.In other realizations, detection model can be obtained by Function Fitting method.Optionally, after fitting
In detection model, closed coefficient can be equal to room volume multiplied by about the indoor deconv with outdoor pressure difference with about
The multinomial of intake velocity.
In the present embodiment, display module 305 can be according to the closed coefficient that generation module 304 obtains to the closed of room
Property is shown.Wherein, displaying here can be text displaying, voice displaying etc., and the application is without limitation.It is some can
Select in implementation, display module 305 can further include: computing unit (not shown) is configured to calculate closed coefficient
With the ratio of the closed coefficient of standard；Display unit (not shown) is configured to above-mentioned ratio showing user.
It is appreciated that fresh air system 300 is corresponding with the detection method of the closed coefficient in room, as a result, above with respect to detection
The feature of the method description of the closed coefficient in room is corresponded to each other with the operation that 300 modules of fresh air system describe, no longer superfluous herein
It states.
Fresh air system 300 can also include some other known features, such as processor, memory etc., in order to unnecessary
Ground obscures embodiment of the disclosure, these well known structures are not shown in Fig. 3
It is worth noting that each module of the fresh air system in the present embodiment, it can be by hardware realization, it can also be by software
It realizes, the application does not limit this.Flow chart and block diagram in attached drawing, illustrate the dress according to the various embodiments of the application
It sets, the function and operation in the cards of method.In this regard, each box in flowchart or block diagram can represent a mould
A part of block, program segment or code, a part of the module, program segment or code include one or more for realizing rule
The executable instruction of fixed logic function.It should also be noted that in some implementations as replacements, function marked in the box
It can also occur in a different order than that indicated in the drawings.For example, two boxes succeedingly indicated can actually be basic
It is performed in parallel, they can also be executed in the opposite order sometimes, and this depends on the function involved.
Being described in module involved in the embodiment of the present application can be realized by way of software, can also be by hard
The mode of part is realized.When being realized by way of software, described module also be can be set in the processor, for example,
Can be described as: a kind of processor includes obtaining module, detection module, generation module and display module.Wherein, these modules
Title does not constitute the restriction to the unit itself under certain conditions, for example, obtaining module is also described as " configuration use
In the module for obtaining room volume ".
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art
Member is it should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from foregoing invention design, it is carried out by above-mentioned technical characteristic or its equivalent feature
Any combination and the other technical solutions formed.Such as features described above has similar function with (but being not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (9)
1. a kind of method for detecting room airtightness, which is characterized in that the described method includes:
Obtain room volume；
By blower from outdoor to interior air-supply；
The indoor pressure difference with outdoor of detection and the outdoor intake velocity to indoor air-supply；
Closed coefficient is generated by default detection model according to the room volume, the pressure difference and the intake velocity,
In, the closed coefficient and the room volume are positively correlated, and are positively correlated with the pressure difference, negatively correlated with the intake velocity；
Room airtightness is shown based on the closed coefficient.
2. the method according to claim 1, wherein the detection model includes:
Closed coefficient is equal to room volume multiplied by indoor and outdoor pressure difference divided by intake velocity.
3. the method according to claim 1, wherein the indoor pressure difference with outdoor includes: current pressure difference
It is poor to subtract initial pressure, wherein the initial pressure difference be from outdoor to interior air-supply before interior and outdoor pressure difference.
4. the method according to claim 1, wherein the detection model is obtained by Function Fitting method；Tool
Body the following steps are included:
Outdoor is successively adjusted to maximum value from 0 to the intake velocity of interior air-supply by adjusting power of fan；
Monitoring interior is with outdoor pressure difference with the change of the intake velocity；
Function Fitting is carried out to the monitoring model with pressure outside difference curve and intake velocity curve by indoor, so that according to
The closed coefficient that any one point calculates on intake velocity curve is all the same.
5. according to the method described in claim 4, it is characterized in that, passing through the detection model packet after the fitting of Function Fitting method
It includes:
Closed coefficient is equal to room volume multiplied by the deconv about indoor and outdoor pressure difference about intake velocity
Multinomial.
6. -5 any method according to claim 1, which is characterized in that described to show that room is close based on the closed coefficient
Closing property includes:
Calculate the ratio of closed coefficient Yu the closed coefficient of standard；
The ratio is showed into user.
7. a kind of fresh air system, which is characterized in that the fresh air system includes:
Module is obtained, is configured to obtain room volume；
Blower, for from outdoor to interior air-supply；
Detection module is configured to the indoor pressure difference with outdoor of detection and the outdoor intake velocity to indoor air-supply；
Generation module is configured to pass through default detection mould according to the room volume, the pressure difference and the intake velocity
Type generates closed coefficient, wherein the closed coefficient and the room volume are positively correlated, and are positively correlated with the pressure difference, with institute
State intake velocity negative correlation；
Display module is configured to show room airtightness based on the closed coefficient.
8. fresh air system according to claim 7, which is characterized in that the indoor pressure difference with outdoor includes: current pressure
Power subtractive goes initial pressure poor, wherein the initial pressure difference be from outdoor to interior air-supply before interior and outdoor pressure
Difference.
9. according to any fresh air system of claim 7 or 8, which is characterized in that the display module includes:
Computing unit is configured to calculate the ratio of closed coefficient Yu the closed coefficient of standard；
Display unit is configured to the ratio showing user.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113531814A (en) * | 2020-04-17 | 2021-10-22 | 广东美的制冷设备有限公司 | Fresh air equipment and control method, control device and readable storage medium thereof |
| CN113685980A (en) * | 2020-05-18 | 2021-11-23 | 广东美的制冷设备有限公司 | Fresh air equipment and control method, control device and readable storage medium thereof |
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