CN113266927A - Method for guaranteeing air volume of fresh air system - Google Patents
Method for guaranteeing air volume of fresh air system Download PDFInfo
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- CN113266927A CN113266927A CN202110550525.2A CN202110550525A CN113266927A CN 113266927 A CN113266927 A CN 113266927A CN 202110550525 A CN202110550525 A CN 202110550525A CN 113266927 A CN113266927 A CN 113266927A
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- Prior art keywords
- fresh air
- air system
- reference power
- frequency
- standard
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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
- F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F11/70—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
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a fresh air system, and the method for ensuring the air volume of the fresh air system adjusts the fan frequency of the fresh air system after installation by calculating the change rate of the reference power of the fresh air system after installation relative to the factory reference power, solves the problem that the air volume does not reach the standard or exceeds the standard after the fresh air system cannot be installed according to the pipeline standard provided by a manufacturer, and is suitable for the fresh air system.
Description
Technical Field
The invention relates to a fresh air system, in particular to a method for guaranteeing air volume of the fresh air system.
Background
The air quantity influence factor of the fresh air system not only depends on the power of the fan, but also is closely related to the pipeline of the fresh air system, and for fresh air equipment leaving a factory, a manufacturer can carry out a matched test on the fresh air equipment according to the pipeline with standard specifications, and sets the fan frequency of the fresh air equipment according to the air quantity standard.
The factory can provide the standard specification of the pipeline for installing the fresh air system, including the aperture and the length, in order to enable the air volume of the fresh air system after installation to reach the standard, the fresh air system needs to be installed according to the pipeline standard provided by the factory, however, on the actual installation site, many situations can not be installed according to the pipeline standard provided by the factory, so that the air volume of the fresh air system is not up to the standard or over the standard, for example, the aperture of the pipeline reserved by the user is smaller than the standard aperture of the pipeline provided by the factory, the user feels that the aperture is increased to affect the appearance, the aperture is not increased, or the length of the pipeline reserved by the user is not consistent with the standard length of the pipeline provided by the factory, or the pipeline needs to be converted into an air pipe with other size or increased through a joint according to the actual installation condition, and the like.
If the amount of wind of new trend system is not up to standard, then the effect of new trend system is unsatisfactory, if the amount of wind of new trend system exceeds standard, then the temperature regulating system who uses with the cooperation of new trend system can receive very big influence to influence the effect that adjusts the temperature, temperature regulating system includes the air conditioner.
Disclosure of Invention
The technical problems solved by the invention are as follows: the method for guaranteeing the air volume of the fresh air system is provided, and the problem that the air volume does not reach the standard or exceeds the standard due to the fact that the fresh air system cannot be installed according to the pipeline standard provided by a manufacturer is solved.
The invention adopts the technical scheme for solving the technical problems that: the method for ensuring the air volume of the fresh air system comprises the following steps:
s01, debugging the fresh air equipment by a manufacturer according to the air pipe with the standard specification, setting the frequency F1 of a fan of the fresh air equipment according to the air quantity, and acquiring the reference power Pa of a fresh air system corresponding to the air pipe with the standard specification;
s02, installing fresh air equipment and an air pipe according to actual conditions of an installation site, and acquiring the reference power Pb of the installed fresh air system;
and S03, adjusting the fan frequency of the installed fresh air system according to a reference power change rate delta P, wherein the reference power change rate delta P is (Pb-Pa). times.100% ÷ Pa. .
Further, the method for acquiring the reference power by the fresh air system in steps S01 and S02 includes the following steps:
s001, adjusting the fan frequency of a fresh air system to a preset value R;
s002, after the frequency is stabilized, collecting the power Pn of the fresh air system for N times, and calculating the average value Pn' of the power Pn of the fresh air system collected for N times;
s003, repeating the step S002 for M times to obtain M Pn ', and calculating the average value Pnm' of the M Pn ', wherein the average value Pnm' is used as the reference power of the fresh air system.
Further, in step S03, if the absolute value of Δ P is smaller than the preset value, the fan frequency of the installed fresh air system is not adjusted; if the absolute value of the delta P is not smaller than the preset value, the fan frequency of the installed fresh air system is adjusted to be F2, and F2 is F1 x (1-delta P).
The invention has the beneficial effects that: the method for guaranteeing the air volume of the fresh air system adjusts the fan frequency of the installed fresh air system by calculating the change rate of the reference power of the installed fresh air system relative to the factory reference power, and solves the problem that the air volume does not reach the standard or exceeds the standard after the fresh air system cannot be installed according to the pipeline standard provided by a manufacturer. The method for ensuring the air volume of the fresh air system can enable a user to freely select the pipeline specification, also enable the air volume of the fresh air system to be within the preset standard range after installation, and improve the application scene of the fresh air system.
Drawings
FIG. 1 is a schematic flow diagram of a method for ensuring air volume by a fresh air system.
Detailed Description
The method for guaranteeing the air volume of the fresh air system is shown as the attached figure 1 and comprises the following steps:
s01, debugging the fresh air equipment by a manufacturer according to the air pipe with the standard specification, setting the frequency F1 of a fan of the fresh air equipment according to the air quantity, and acquiring the reference power Pa of a fresh air system corresponding to the air pipe with the standard specification;
s02, installing fresh air equipment and an air pipe according to actual conditions of an installation site, and acquiring the reference power Pb of the installed fresh air system;
and S03, adjusting the fan frequency of the installed fresh air system according to a reference power change rate delta P, wherein the reference power change rate delta P is (Pb-Pa). times.100% ÷ Pa.
Further, the method for acquiring the reference power by the fresh air system in steps S01 and S02 includes the following steps:
s001, adjusting the fan frequency of a fresh air system to a preset value R;
s002, after the frequency is stabilized, collecting the power Pn of the fresh air system for N times, and calculating the average value Pn' of the power Pn of the fresh air system collected for N times;
s003, repeating the step S002 for M times to obtain M Pn ', and calculating the average value Pnm' of the M Pn ', wherein the average value Pnm' is used as the reference power of the fresh air system.
Further, in step S03, if the absolute value of Δ P is smaller than the preset value, the fan frequency of the installed fresh air system is not adjusted; if the absolute value of the delta P is not smaller than the preset value, the fan frequency of the installed fresh air system is adjusted to be F2, and F2 is F1 x (1-delta P).
The embodiment of the method for ensuring the air volume by the fresh air system comprises the following steps:
the fresh air equipment produced by a manufacturer is debugged according to an air pipe with a standard specification, the standard specification is freely specified by the manufacturer, the frequency F1 of a fan of the fresh air equipment is set according to the air volume, the air volume of the fresh air system is determined, the manufacturer obtains the reference power Pa of the fresh air system, and the method comprises the following specific steps:
firstly, setting the frequency of a fan to be F1;
secondly, after the frequency of the fresh air system is stabilized, collecting the power Pn of the fresh air system for N times, and calculating the average value Pn' of the power Pn of the fresh air system collected for N times;
thirdly, repeating the second step for M times to obtain M Pn's, and calculating an average Pnm' of the M Pn's, where the average Pnm' is used as the reference power Pa of the fresh air system.
The user purchases corresponding new trend system according to actual need's the amount of wind, because the actual installation condition leads to the length of tuber pipe, and the aperture etc. is inconsistent with the standard specification of producer, can lead to the new trend system amount of wind after the installation not up to standard or exceed standard, consequently, after the installation is accomplished, needs adjust the fan frequency of new trend system according to actual conditions.
The specific process for adjusting the frequency of the fan is as follows:
firstly, starting a fresh air system, and operating a fan according to a frequency F1 set by a manufacturer;
secondly, after the frequency of the fresh air system is stabilized, collecting the power Pk of the fresh air system for K times, and calculating the average value Pk' of the power Pk of the fresh air system collected for K times;
thirdly, repeating the second step for Q times to obtain Q Pk ', calculating the average value Pkq' of the Q Pk ', wherein the average value Pkq' is used as the reference power Pb of the fresh air system.
Fourthly, calculating the change rate delta P of the reference power as (Pb-Pa) multiplied by 100% ÷ Pa, and if the absolute value of the delta P is smaller than a preset value, not adjusting the fan frequency of the installed fresh air system; if the absolute value of the delta P is not less than the preset value, the fan frequency of the installed fresh air system is adjusted to be F2, wherein F2 is F1 (1-delta P), specifically, if Pb is greater than Pa, the delta P is a positive number, when the delta P is greater than the preset value, the frequency of the compressor is reduced, the reduction amount is F1 x delta P, if Pb is less than Pa, the delta P is a negative number, when the absolute value of the delta P is greater than the preset value, the frequency of the compressor is increased, and the increase amount is F1 x delta P.
Claims (3)
1. The method for ensuring the air volume of the fresh air system is characterized in that the fresh air system comprises fresh air equipment and an air pipe, and comprises the following steps:
s01, debugging the fresh air equipment by a manufacturer according to the air pipe with the standard specification, setting the frequency F1 of a fan of the fresh air equipment according to the air quantity, and acquiring the reference power Pa of a fresh air system corresponding to the air pipe with the standard specification;
s02, installing fresh air equipment and an air pipe according to actual conditions of an installation site, and acquiring the reference power Pb of the installed fresh air system;
and S03, adjusting the fan frequency of the installed fresh air system according to a reference power change rate delta P, wherein the reference power change rate delta P is (Pb-Pa). times.100% ÷ Pa.
2. The method for guaranteeing the air volume of the fresh air system according to claim 1, wherein the method for acquiring the reference power by the fresh air system in steps S01 and S02 comprises the following steps:
s001, adjusting the fan frequency of the fresh air system to a preset value;
s002, after the frequency is stabilized, collecting the power Pn of the fresh air system for N times, and calculating the average value Pn' of the power Pn of the fresh air system collected for N times;
s003, repeating the step S002 for M times to obtain M Pn ', and calculating the average value Pnm' of the M Pn ', wherein the average value Pnm' is used as the reference power of the fresh air system.
3. The method for ensuring the air volume by the fresh air system according to claim 1 or 2, wherein in step S03, if the absolute value of Δ P is smaller than a preset value, the fan frequency of the fresh air system after installation is not adjusted; if the absolute value of the delta P is not smaller than the preset value, the fan frequency of the installed fresh air system is adjusted to be F2, and F2 is F1 x (1-delta P).
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