CN106679084A - Filtering net replacement reminding method for fresh air system - Google Patents
Filtering net replacement reminding method for fresh air system Download PDFInfo
- Publication number
- CN106679084A CN106679084A CN201611225652.0A CN201611225652A CN106679084A CN 106679084 A CN106679084 A CN 106679084A CN 201611225652 A CN201611225652 A CN 201611225652A CN 106679084 A CN106679084 A CN 106679084A
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- Prior art keywords
- filter screen
- weight
- value
- electric current
- power
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Classifications
-
- 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
- F24F2110/00—Control inputs relating to air properties
-
- 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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a filtering net replacement reminding method for a fresh air system. The method comprises the steps that the current, voltage and power signals of a filtering net in the operating process are all associated with a weight parameter of the filtering net, and a corresponding function relationship is established; and in the operating process of the filtering net, the weight parameter of the filtering net can be directly obtained according to the obtained current and voltage or power signals, the weight parameter is compared with the maximum loading capacity of the filtering net, data are precise, and an operator can judge whether the filtering net needs to be replaced or not conveniently and precisely. According to the method, additional detection equipment does not need to be additionally arranged, and the purchase and installation costs of the fresh air system are lowered.
Description
Technical field
The present invention relates to the auxiliary operation system field of VMC, more particularly to a kind of screen replacing of VMC
Reminding method.
Background technology
VMC in the process of running, is required to filter the granule foreign in air by filter screen, because gas is to hold
It is continuous by filter screen, therefore substantial amounts of granule foreign can be assembled on the position of filter screen.These granule foreigns gather it is more after, meeting
Opening of sieve is blocked, the normal work of filter screen is influenceed, the throughput of VMC can be caused to decline under serious conditions, single unit system
Intercourse meeting degradation；At this time, it is necessary to which operating personnel carry out replacing sieving operation.
Therefore, for VMC, it is main in VMC running for how reminding operating personnel to change filter screen
One of ask a question, there are various reminding methods on the market at present, one kind is correlation detector detection, when detector detects fresh air
When in the wind of system discharge containing impurity, then prompting changing filtering net；This method is led firstly the need of other testing equipments are installed additional
Caused by causing the erection cost of VMC increases, and the impurity that detects of detector is not necessarily by filter net jam, also have
Be probably in VMC other assemblies failure cause, precision is not high；Another kind is judged by air quantity or power detection
Whether filter screen needs what is changed, but, due to blower fan in the process of running, electric current, the electricity of filter net jam meeting combined influence blower fan
The factors such as pressure, power and ventilation, are, by the comprehensive function of many factors, whether filter screen to be judged only by single data
Need detection, it is evident that precision is inadequate；And, situation about being detected by these equipment is the working condition of blower fan reaction,
For filter screen dust load situation in itself, these data are all the data of side reaction, and being by these equipment can not be accurate
Draw.
The content of the invention
It is a kind of easy to operate present invention aim at providing for above-mentioned problem, it is convenient precisely to judge that filter screen is born
Load situation, the filter screen of VMC with low cost points out the method changed.
In order to achieve the above object, the technical solution adopted by the present invention is as follows：A kind of filter screen prompting of VMC is changed
Method, described method comprises the following steps：
1）The filter screen of the fixed specification of selection, when filter screen is unloaded, the weight for detecting filter screen is Q0, it is operated using the filter screen,
Determine the speed electric V of the wind-force electrical machinery of the filter screen stylish wind system of work0, electric current I0And power P0；
2）Selection step 1）In filter screen, when the filter screen full load, the weight for detecting filter screen is Q1, work is carried out using the filter screen
Make, determine the speed electric V of the wind-force electrical machinery of the filter screen stylish wind system of work1, electric current I1And power P1；
3）According to step 1）、2）In result, draw the filter screen in unloaded and full load, the excursion Q of the weight of filter screen0~
Q1, the excursion V of speed electric1~V0, the excursion I of electric current1~I0With the excursion P of power1~P0；
4）To weight range Q0~Q1Interior multiple filter screens are tested, and the speed governing electricity corresponding to different filter screen weight is measured respectively
Pressure, electric current and power, are computed, and respectively obtain the functional relation of the functional relation of speed electric and weight, electric current and weight, work(
The functional relation of rate and weight；
5）By step 4）In the related functional relation of three weight obtaining imported into central processing unit, the filter screen is loaded new
Wind system, starts normal work, real-time detection speed electric Va, electric current Ia and power P a in the course of work；
6）Central processing unit is according to 5）In measure speed electric Va, electric current Ia and power P a, according to respective functional relation
The corresponding weight Qva of speed electric, the corresponding weight Qia of electric current and the corresponding weight Qpa of power are drawn respectively；
7）By Qva, Qia and Qpa three respectively with Q1Contrasted, when any one value is more than or equal to Q in three1When, in
Central processor sends early warning signal, reminds operating personnel to change filter screen；
8）By Qva, Qia and Qpa three respectively with Q1Contrasted, when three is respectively less than Q1When, filter screen is calculated by formula
Load capacity F,, the load capacity that will be obtained carried out by display device
It has been shown that, reminds the pot life of operating personnel's filter screen.
When VMC of the present invention uses direct current generator as wind drive, step 6）In the data that obtain be
Va, Ia and Pa, the filter screen weight for further obtaining are Qva, Qia and Qpa.：Blower fan is in negative pressure or tends under vacuum environment, rotates
Resistance reduces, and rotating speed can be accelerated, but when rotation speed of fan is faster than direct current generator setting speed, voltage can be reduced voluntarily, to reduce
Rotation speed of fan.
When VMC of the present invention uses alternating current generator as wind drive, speed electric will not change,
Step 6）In the data that obtain be Va and Pa, the filter screen weight for further obtaining is Qva and Qpa；Alternating current generator does not have rotating speed anti-
Feedback signal line, it is impossible to obtain tach signal, the change that also can be just reduced in the absence of speed electric, after filter net jam, blower fan is negative
Pressure tends under vacuum environment, and rotary resistance reduces, and rotating speed can accelerate, but without detection signal output.
When direct current generator of the present invention is as wind drive, the value of Va is in inverse ratio, the value and Qia of Ia with the value of Qva
Value be in inverse ratio, the value of Pa and the value of Qpa are in inverse ratio.
When alternating current generator of the present invention is as wind drive, the value of Ia is in inverse ratio, the value and Qpa of Pa with the value of Qia
Value be in inverse ratio.
The advantage of the invention is that：Unnecessary testing equipment need not be added in the method for the present invention, fresh air system is reduced
That unites purchases and installation cost；Simultaneously, according to the specification of different filter screens, by filter screen electric current, tune in the process of running
Fast voltage and power signal are associated with the weight parameter of filter screen, and build corresponding functional relation；So that filter screen is in fortune
During row, according to the electric current, speed electric or power signal that obtain, the weight parameter of filter screen can be directly obtained, by this
Weight parameter is contrasted with the ultimate load of filter screen, judges whether filter screen needs to change, and the data are the most accurate.
Under normal circumstances, it is the filter screen weight parameter whole that is associated by the electric current that measures, speed electric or power signal
More than or during most of ultimate load more than filter screen, filter screen can just carry out replacement operation；But, when one of which data
When the filter screen weight for obtaining is more than ultimate load, in order to avoid filter screen excessive load, operating personnel can directly be carried out
Change.Its more excellent function is, when three is the optimum load amount for reaching filter screen, can directly calculate the reality of filter screen
Border load capacity F, the data are percentages show, operating personnel can be facilitated directly to judge the loading condition of filter screen, soon
Before reaching ultimate load, remind in time, be convenient for changing.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail.
Embodiment 1：The method that a kind of filter screen prompting of VMC is changed（DC driven）, described method includes following
Step：
1）The filter screen of the fixed specification of selection, when filter screen is unloaded, the weight for detecting filter screen is Q0=400g, is carried out using the filter screen
Work, determines the speed electric V of the wind-force electrical machinery of the filter screen stylish wind system of work0=5V, electric current I0=0.145A and P0=45W。
2）Selection step 1）In filter screen, when the filter screen full load, the weight for detecting filter screen is Q1=500g, using the filter
Net is operated, and determines the speed electric V of the wind-force electrical machinery of the filter screen stylish wind system of work1=2V, electric current I1=0.130A and P1=
39.7W。
3）According to step 1）、2）In result, draw the filter screen in unloaded and full load, the excursion of the weight of filter screen
Q0~Q1, the excursion V of speed electric1~V0, the excursion I of electric current1~I0With the excursion P of power1~P0。
4）To weight range Q0~Q1Interior multiple filter screens are tested, and the tune corresponding to different filter screen weight is measured respectively
Fast voltage, electric current and power, are computed, and respectively obtain the functional relation of speed electric and weight, and electric current is closed with the function of weight
The functional relation of system, power and weight.
5）By step 4）In the related functional relation of three weight obtaining imported into central processing unit, by filter screen dress
Enter VMC, start normal work, real-time detection speed electric Va=2.3V, electric current Ia=0.143A and power in the course of work
Pa=44.2W。
6）Central processing unit is according to 5）In measure speed electric Va=2.3V, electric current Ia=0.143A and power P a=
44.2W, the corresponding weight Qva=406.5g of speed electric, the corresponding weight of electric current are drawn according to respective functional relation respectively
The Qia=407g and corresponding weight Qpa=407.2g of power.
7）By Qva=406.5g, Qia=407g and Qpa=407.2g three respectively with Q1=500g is contrasted, through judging three
Person is respectively less than Q1, therefore load capacity to filter screen calculates；The load capacity F=7% of filter screen is calculated by formula, it is negative by what is obtained
Carrying capacity shown by display device, reminds the pot life of operating personnel's filter screen.
Embodiment 2：The method that a kind of filter screen prompting of VMC is changed（Exchange drives）, described method includes following
Step：
1）The filter screen of the fixed specification of selection, when filter screen is unloaded, the weight for detecting filter screen is Q0=400g, is carried out using the filter screen
Work, determines the electric current I of the wind-force electrical machinery of the filter screen stylish wind system of work0=0.410A and power P0=90W。
2）Selection step 1）In filter screen, when the filter screen full load, the weight for detecting filter screen is Q1=500g, using the filter
Net is operated, and determines the electric current I of the wind-force electrical machinery of the filter screen stylish wind system of work1=0.282A and power P1=60W。
3）According to step 1）、2）In result, draw the filter screen in unloaded and full load, the excursion of the weight of filter screen
Q0~Q1, the excursion I of electric current1~I0With the excursion P of power1~P0。
4）To weight range Q0~Q1Interior multiple filter screens are tested, and the tune corresponding to different filter screen weight is measured respectively
Fast voltage, electric current and power, are computed, and respectively obtain the functional relation of speed electric and weight, and electric current is closed with the function of weight
The functional relation of system, power and weight.
5）By step 4）In the related functional relation of three weight obtaining imported into central processing unit, by filter screen dress
Enter VMC, start normal work, real-time detection electric current Ia=0.311A and power P a=67.8W in the course of work.
6）Central processing unit is according to 5）In measure electric current Ia=0.311A and power P a=67.8W, according to respective letter
Number relation draws the corresponding weight Qia=429g of the electric current and corresponding weight Qpa=429g of power respectively.
7）By Qia=429.1g and Qpa=429.3g threes respectively with Q1=500g is contrasted, through judging that both of which is less than
Q1, therefore load capacity to filter screen calculates；The load capacity F=29% of filter screen is calculated by formula, the load capacity that will be obtained is led to
Cross display device to be shown, remind the pot life of operating personnel's filter screen.
Embodiment 3：According to the technical scheme in embodiment 1 and 2, using the filter screen of different size, performance comparison examination is carried out
Test, the result for obtaining is as shown in the table：
The unloaded and fully loaded voltage change range of the filter screen of table 1
Table 2 is after operating method of the invention treatment to the judged result of screen replacing
。
From the data in above-mentioned two form：By the method for the present invention, no matter VMC uses exchange
Electric drive or DC powered, according to the speed electric of practical measurement, electric current and power during fan operation, according to storage
Functional relation calculated, be calculated the actual weight of filter screen, the actual weight according to filter screen may determine that the negative of filter screen
Load rate, judges whether filter screen needs to change in time, and detection data precisely, facilitates operating personnel to change in time.
It should be noted that above-mentioned is only presently preferred embodiments of the present invention, not for limiting protection model of the invention
Enclose, any combination or equivalents made on the basis of above-described embodiment belong to protection scope of the present invention.
Claims (5)
1. the method that a kind of filter screen prompting of VMC is changed, it is characterised in that described method is comprised the following steps：
1）The filter screen of the fixed specification of selection, when filter screen is unloaded, the weight for detecting filter screen is Q0, it is operated using the filter screen, survey
Determine the speed electric V of the wind-force electrical machinery of the filter screen stylish wind system of work0, electric current I0And power P0；
2）Selection step 1）In filter screen, when the filter screen full load, the weight for detecting filter screen is Q1, it is operated using the filter screen,
Determine the speed electric V of the wind-force electrical machinery of the filter screen stylish wind system of work1, electric current I1And power P1；
3）According to step 1）、2）In result, draw the filter screen in unloaded and full load, the excursion Q of the weight of filter screen0~
Q1, the excursion V of speed electric1~V0, the excursion I of electric current1~I0With the excursion P of power1~P0；
4）To weight range Q0~Q1Interior multiple filter screens are tested, and the speed governing electricity corresponding to different filter screen weight is measured respectively
Pressure, electric current and power, are computed, and respectively obtain the functional relation of the functional relation of speed electric and weight, electric current and weight, work(
The functional relation of rate and weight；
5）By step 4）In the related functional relation of three weight obtaining imported into central processing unit, the filter screen is loaded new
Wind system, starts normal work, real-time detection speed electric Va, electric current Ia and power P a in the course of work；
6）Central processing unit is according to 5）In measure speed electric Va, electric current Ia and power P a, according to respective functional relation
The corresponding weight Qva of speed electric, the corresponding weight Qia of electric current and the corresponding weight Qpa of power are drawn respectively；
7）By Qva, Qia and Qpa three respectively with Q1Contrasted, when any one value is more than or equal to Q in three1When, center
Processor sends early warning signal, reminds operating personnel to change filter screen；
8）By Qva, Qia and Qpa three respectively with Q1Contrasted, when three is respectively less than Q1When, the negative of filter screen is calculated by formula
Carrying capacity F, , the load capacity that will be obtained shown by display device
Show, remind the pot life of operating personnel's filter screen.
2. the method that the filter screen prompting of VMC according to claim 1 is changed, it is characterised in that described fresh air system
When system uses direct current generator as wind drive, step 6）In the data that obtain be Va, Ia and Pa, the filter screen weight for further obtaining
Measure is Qva, Qia and Qpa.
3. the replacing options that the filter screen of VMC according to claim 1 is pointed out, it is characterised in that described fresh air system
When system uses alternating current generator as wind drive, speed electric will not change, step 6）In the data that obtain be Ia and Pa,
The filter screen weight for further obtaining is Qia and Qpa.
4. the replacing options that the filter screen of VMC according to claim 2 is pointed out, it is characterised in that described direct current
When machine is as wind drive, the value of Va is in inverse ratio with the value of Qva, and the value of Ia is in inverse ratio, the value of Pa and the value of Qpa with the value of Qia
In inverse ratio.
5. the replacing options that the filter screen of VMC according to claim 2 is pointed out, it is characterised in that described alternating current
When machine is as wind drive, the value of Ia is in inverse ratio with the value of Qia, and the value of Pa is in inverse ratio with the value of Qpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225652.0A CN106679084B (en) | 2016-12-27 | 2016-12-27 | A kind of method of the strainer prompt replacement of fresh air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225652.0A CN106679084B (en) | 2016-12-27 | 2016-12-27 | A kind of method of the strainer prompt replacement of fresh air system |
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| CN106679084A true CN106679084A (en) | 2017-05-17 |
| CN106679084B CN106679084B (en) | 2019-09-10 |
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| CN201611225652.0A Active CN106679084B (en) | 2016-12-27 | 2016-12-27 | A kind of method of the strainer prompt replacement of fresh air system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889060A (en) * | 2018-05-28 | 2018-11-27 | 北京小米移动软件有限公司 | Detect the method and device of filter core |
| CN110030662A (en) * | 2019-03-22 | 2019-07-19 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit filter gauze cleaning system for prompting and its method and air conditioner |
| CN110160211A (en) * | 2019-04-28 | 2019-08-23 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit filter gauze cleaning system for prompting and its method and air conditioner |
| CN110260465A (en) * | 2019-07-22 | 2019-09-20 | 珠海格力电器股份有限公司 | Airflow filtering component filth blockage detection device and method and air conditioning equipment |
| CN111998490A (en) * | 2020-09-02 | 2020-11-27 | 浙江美臣环境科技有限公司 | Intelligent interconnected fresh air system |
| CN112628938A (en) * | 2020-12-24 | 2021-04-09 | 珠海格力电器股份有限公司 | Filter screen filth blockage detection equipment, method and device, electronic equipment and storage medium |
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| CN105841295A (en) * | 2016-03-28 | 2016-08-10 | 海信（山东）空调有限公司 | Filter screen service life detecting method and device |
| CN105864973A (en) * | 2016-04-14 | 2016-08-17 | 常州绿谷物联网科技有限公司 | Air resistance recognition method for fresh air purification system and device thereof |
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| US20050154495A1 (en) * | 2003-12-18 | 2005-07-14 | Shah Rajendra K. | Detection of clogged filter in an HVAC system |
| CN203869253U (en) * | 2013-11-21 | 2014-10-08 | 广东美的制冷设备有限公司 | Air conditioner and filth blockage detection control device thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889060A (en) * | 2018-05-28 | 2018-11-27 | 北京小米移动软件有限公司 | Detect the method and device of filter core |
| CN110030662A (en) * | 2019-03-22 | 2019-07-19 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit filter gauze cleaning system for prompting and its method and air conditioner |
| CN110160211A (en) * | 2019-04-28 | 2019-08-23 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit filter gauze cleaning system for prompting and its method and air conditioner |
| CN110260465A (en) * | 2019-07-22 | 2019-09-20 | 珠海格力电器股份有限公司 | Airflow filtering component filth blockage detection device and method and air conditioning equipment |
| CN111998490A (en) * | 2020-09-02 | 2020-11-27 | 浙江美臣环境科技有限公司 | Intelligent interconnected fresh air system |
| CN112628938A (en) * | 2020-12-24 | 2021-04-09 | 珠海格力电器股份有限公司 | Filter screen filth blockage detection equipment, method and device, electronic equipment and storage medium |
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|---|---|
| CN106679084B (en) | 2019-09-10 |
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