CN1910405A - Method and system for automatically optimizing zone duct damper positions - Google Patents
Method and system for automatically optimizing zone duct damper positions Download PDFInfo
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- CN1910405A CN1910405A CNA200580002842XA CN200580002842A CN1910405A CN 1910405 A CN1910405 A CN 1910405A CN A200580002842X A CNA200580002842X A CN A200580002842XA CN 200580002842 A CN200580002842 A CN 200580002842A CN 1910405 A CN1910405 A CN 1910405A
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- 238000010438 heat treatment Methods 0.000 description 17
- 238000005057 refrigeration Methods 0.000 description 15
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- 238000005259 measurement Methods 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 4
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- 238000004378 air conditioning Methods 0.000 description 2
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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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
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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
- F24F11/46—Improving electric energy efficiency or saving
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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
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
- F24F3/0442—Systems in which all treatment is given in the central station, i.e. all-air systems with volume control at a constant temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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Abstract
A control is functional to perform a method of determining a maximum desired airflow for each of a plurality of zones in a multi-zone HVAC system, and an expected airflow to those zones. In part, these determinations are based upon an algorithm that calculates the relative size of the ducts leading to each of the zones. The expected and maximum airflows are compared for each of the zones, and if any zone has an expected airflow that exceeds its maximum airflow, certain steps are taken to reduce airflow to that zone.
Description
Technical field
The position that the application relates to the zone damper (damper) that is used to adjust multi-region heat supply, heating ventilation and air-conditioning (HVAC) system did not flow into the method and system in arbitrary zone to guarantee the high level air.
Background technology
Multi-region HVAC system is known, comprise the parts (stove, air regulator, heat pump etc.) that are used to change air themperature and condition, and room air processor (air handler), be used for air being driven to all multizones in the building from these parts by duct.In order to simplify, these parts will be referred to as the temperature change parts.Each duct generally includes air-lock, can control this air-lock and flow into each zone to obtain the temperature of expection with restriction or permission air-flow.
Air processor is carried the air of fixed qty under most conditions of work, distribute these air based on damper position and each wind groove with respect to the size of other wind groove between a plurality of zones.When one of them dampers closed, additional air will be driven and pass other duct with opening air-lock.Sometimes this air quantity that can cause flowing into arbitrary zone is higher than needed level.The position of selecting air-lock, should can excessively be regulated in the zone if by duct additional air is driven to a certain zone usually to obtain the desired temperature in this zone.
In addition, along with air quantity increases, noise level also increases.Sometimes this noise level level that surpasss the expectation.
Usually, prior art has comprised the pressure-responsive bypass, allows excess air to turn back to source or return duct and turn back to the temperature change parts.
This need buy and install bypass valve.In addition, by adjusted air is turned back to return duct, the temperature that arrives the air of temperature change parts is different from the temperature of atmosphere air.Therefore can cause other problem.
Summary of the invention
In a disclosed embodiment of the present invention, controller is carried out the method for each regional maximum airflow of assessment and All Ranges expection air-flow.Relatively these two air-flows if arbitrary zone expection air-flow surpasses its maximum desired air-flow, are then carried out specific step and are arrived this regional actual airflow with minimum stream.
In one embodiment, whether the inquiry of this controller can reduce total system airflow, and if can then reduce total system airflow.In addition, whether this system interrogation can be adjusted and not occupy regional set point to accept more air.Compare with occupying the zone, not occupying the zone may be more insensitive to the variation of temperature or additional noise.Do not occupy zone set point if can change, then change this set point.If still need further to change, then this system is to occupying the identical problem of zone inquiry.
At last, whether this system interrogation can change to other stage with these temperature change parts, if could these temperature change parts would be changed to other stage.
In order to calculate each regional maximum airflow and expection air-flow, this system depends on a kind of unique algorithm and is used to calculate each regional opposed area wind groove size.
By following specification and accompanying drawing, can understand these and other feature of the present invention best, following content is to summary of the present invention.
Description of drawings
Fig. 1 is the schematic diagram of building HVAC system.
Fig. 2 is the flow chart of the inventive method.
Fig. 3 is the flow chart of a part of the present invention.
Fig. 4 is the flow chart of the subsequent step of Fig. 3 flow chart.
The example that Fig. 5 is illustrated in the controller place shows.
Detailed Description Of The Invention
Schematically shown multi-region HVAC system 20 among Fig. 1.Be used to change the temperature change parts 22 of air conditions, for example indoor unit (furnace/heater coil) and/or outdoor unit (conditioner/heat pump) are associated with room air processor 24.Air processor 24 obtains air from return duct 26, a plurality of air feed grooves 28,30,32 that this air is driven to forced air-ventilating system 31 and is associated with zones of different 1,2,3 in the building.As shown in the figure, on each air feed groove 28,30,32, provide air-lock 34.Such as the controller of microprocessor controller 36 control air-lock 34, temperature change parts 22, room air processor 24, and and the controller 130 that is associated with each zone communicate.Controller 130 is essentially thermostat, allows the user to set be mutually related each regional ideal temperature, noise level etc.In addition, controller 130 preferably includes the temperature sensor that is used for actual temperature is fed back to controller 36.
In one embodiment, controller 36 is installed in a certain radiator valve 130, and communicate by pilot scheme and all other elements as system controller, this pilot scheme for example as the title of submitting on January 7th, 2004 be " Serial Communicating HVACSystem " unsettled u.s. patent application serial number _ _ _ _ in disclosed.Disclosed as this patent application, controller 36 can receive the configuration information about each these system unit, makes controller 36 understand each feature of parts 22,24,30 and 34.The title of submitting on January 7th, 2004 be " Self-Configuring Controls for Heating, Ventilating and Air Conditioning Systems " unsettled u.s. patent application serial number _ _ _ _ _ details of this feature disclosed.The disclosure of all these applications is incorporated herein by reference.
In the prior art, the air quantity that is driven in each zone 1,2,3 by air processor 24 is excessive sometimes.Can be closed or unlimited air-lock 34 with restriction or allow additional air flow to enter this zone 1,2,3.Although there is the air-lock that is driven to standard-sized sheet or full cut-off, the position that the air-lock that disclosed the present invention adopts not only has standard-sized sheet and full cut-off also has a plurality of closing positions that increase progressively.In one example, there are 16 incremental positions in air-lock between standard-sized sheet and full cut-off.When any one air-lock 34 is closed when returning the adjusting in this zone, additional air flow is driven into the air-lock of more opening wide.This causes too many air to be transported to a certain zone sometimes, thereby can cause excessive variations in temperature and undue noise.In the prior art, pressure responsive bypass valves can be associated with pipeline 28,30,32 or forced air-ventilating system 31 upstreams.Air bypass has unfavorable feature, because therefore this valve that need add, pipeline etc. make assembly become complicated.Typically, bypass air is returned to temperature change parts 22 by return duct 26.Therefore, air enters parts 22 and has become different in atmosphere, may be too cold or too hot and can't effectively work.
For this reason, should find ideally and guarantee that excess air can be by the alternative method of arbitrary wind groove 28,30,32 inflow regions 1,2,3.Certainly, in many systems, may exist greater or less than three zones.Yet for understanding purpose of the present invention, three zones are enough.
In Fig. 2, set forth the flow chart of the air lock controller that need not bypass.In step 50, the regional gas stream limit in each zone 1,2,3 is set.Controller 30 disposes the input setting that is used to set these limit.For example, configurable the maximum airflow of the permission limit is arranged is the setting of LOW, NORMAL, HIGH or MAXIMUM for controller 30.These are provided with to have increased and allow the additive regulating air to enter this regional weight, and the cost of its expectation is for forming additional noise along with air-flow increases.Therefore, be concerned about that the user who reduces noise can be made as controller the LOW level most.Comprise some factory set default values in addition.In simpler design, can only use this default value fully, and not allow operating personnel to replace this default value.
The present invention includes the automatic wind groove size estimation steps of coordinating by controller 36 52, this system very fast this step 52 of execution afterwards is installed in doors, and periodically repeats this step afterwards.This size wind groove evaluation process comprises measuring process and computational process.
In initial measurement process, controller 36 Temporarily Closed temperature change parts 22.This process usually as shown in Figure 3.The air-lock 34 of controller 36 order All Rangeses is unlimited fully.Controller 36 command system air processor 24 subsequently is transported to forced air-ventilating system 31 and wind groove 28,30,32 with the predetermined portions (test airflow) of maximum system airflow.Air processor 24 determines that the speed of its blower motors also communicates the information to controller 36, this controller with this information storage in memory.Then, controller 36 closures all air-locks 34 except the air-lock of first area.Still require air processor 24 and the previous the same test airflow of carrying, this air processor is given controller 36 with new blower motor speed report.Like this, open wide each regional air-lock 34 in this system successively, simultaneously closed all other zone damper 34.In each step of this sequence, carry identical air-flow by air processor 34, and write down final blower speed.At last, closed All Ranges air-lock 34 forces identical test airflow to pass any leakage in the wind groove 28,30,32 around air-lock 34 or its.Log drum fan speed once more.Therefore, for system, obtain n+2 blower speed measurement (SP) altogether with n zone:
When All Ranges opens wide, SPopen;
When All Ranges is closed, SPclosed;
When each zone is opened wide separately, SPi.
Be noted that in above-mentioned measuring process, except unlimited fully and closed air-lock, can partly open wide air-lock at two diverse locations.In addition, in the different step of this sequence, can use different test airflow levels.If select these to change, then can hold these variations by adjusting computational process as follows.It will be appreciated by those skilled in the art that how to adjust calculating to obtain these results.
As follows tachometric survey is converted to wind groove static pressure measurement.Present embodiment has some advantages, because there is not sensor in the present embodiment.A kind of interchangeable scheme is directly carried out the pressure measxurement of wind groove for using economic pressure sensor reliably, but not carries out tachometric survey.
Figure 4 illustrates and determine wind groove size calculation process.At first, obtain a series of air handler static pressures (ASP).The title of submitting on April 30th, 2003 is to disclose the algorithm that is used for determining these static pressure in the u.s. patent application serial number 10/426463 of " Method ofDetermining Static Pressure in a Ducted Air Delivery SystemUsing a Variable Speed Motor ".The complete content of this patent application, the algorithm especially for determining static pressure in the system is referred to herein as a reference.This algorithm is related with following aspect with the static pressure of (from the air inlet to the gas outlet) development on the air handler unit 24: the predetermined constant that the speed and 3 of its blower motor 1) air-flow of being carried by this unit, 2)) depends on the physical features of air processor.
As previously mentioned, controller 36 receives the initial configuration information about all response components in the system 20.Automatically during the configuration and may be between system's installation period, air handler unit 24 be communicated by letter with controller 36 and its characteristic constant is provided at this.This system controller uses the blower speed of element characteristic constant, commanded airflow and the measurement of formula in the above-mentioned application, air handler unit 24 to calculate static pressure on the air handler unit.As shown in Figure 4, all air-locks 34 are opened wide and closure is only opened wide an air-lock subsequently respectively and repeated these measurements.Obtain n+2 ASP calculated value thus, measure a result at every turn.These calculated values be labeled as ASPopen, ASPclosed, ASP1, ASP2 ... ASPn.In standby enforcement, air handler unit 24 controllers own can be finished identical calculating and the static pressure that calculates is conveyed to controller 36.
Another principle of using in the calculating is known " square law ", and the static pressure of any wind slot part or inactive component unit is associated with the air-flow that flows through.This law shows static pressure square changing with air-flow.This law is simplified relation complicated more between these variablees, and is verified normally effective for the air velocity of using in the residential system.
Utilize the ASP value to calculate fixed static pressure (FSP) value.As can be seen from Figure 1, the static pressure that forms on the air handler unit 24 is gone up reduction in any external equipment units (for example filter and extraneous air regulating winding) of airflow passes, and ( air feed side 28,30,31,32 and return side 26) reduces on the whole wind tank systems.Each regional air-lock 34 control delivers air to this regional air feed slot part.In the disclosed system, there is not air-lock in the return duct 26 here.Therefore, return duct, external equipment units and the air feed groove before air-lock have been formed " fixing " part of system, and whole system airs always flows through this standing part.This means that for identical system airflow, the combination pressure drop on these elements is identical with fixed static pressure (FSP), and irrelevant with damper position.Therefore, measure for all n+2, FSP is all identical.This FSP itself is unknown, is determined by computational process.
The quality that is called variable static pressure (VSP) is meant the static pressure at air feed slot part two ends, the static pressure in air-lock 34 two ends and downstream.When measuring process made identical system airflow flow through the different wind slot part of each regional relative size, this VSP value changed.Since need go up equalizing pressure at whole loop (air processor, air feed side, the interior space, return side), therefore for each measuring process:
ASP＝FSP+VSP
VSP in arbitrary measuring process represents the size of the wind slot part that opens wide.Wind slot part restricted more (size is more little), the out-of-date static pressure (VSP) of identical systems air flow stream is big more.Therefore, wind slot part size and VSP are inversely proportional to.Can calculate wind slot part size easily according to airflow capacity, thereby easily determine the fair share of this wind slot part in the whole system air-flow.For this reason, utilize the square law relation between said flow and the pressure, wind slot part size is inversely proportional to the square root of VSP.Because principal focal point of the present invention is a relative size of determining the wind slot part, the wind groove size that each is regional is calculated as the mark (or percentage) of whole air feed tank systems (All Ranges).Therefore, the apparent wind groove size SLi of zoning i is:
SLi＝SQRT(VSPopen/VSPi)
In order to improve precision, the present invention has understood systematicly system leak.Even when all air-lock 34 closures, air still can flow.This is that the part air can leak and pass air-lock because air-lock 34 is not flawless.Equally, wind groove 31,28,30,32 also may have leakage.At some premises, this leakage is remarkable.The reason that Here it is carries out last measurement with all dampers closed.Can accurately calculate " relative size " as mentioned above leaks:
LEAK＝SQRT(VSPopen/VSPclosed)
Because therefore the apparent size that each regional wind slot part has been added in this leakage effectively needs this leakage of deduction.Therefore, the regional wind groove after the correction is of a size of:
Si＝SLi-LEAK
Above-mentioned hypothesis has been used the ASP value.Yet, in order to calculate corresponding VSP value, must determine the FSP value and use equation subsequently:
ASP＝FSP+VSP
Simulate complete wind tank systems and use square law and other relation causes very complicated mathematical model and need find the solution a plurality of non-linear algebraic equations.On the contrary, one aspect of the present invention starts from " initial guess " to the FSP value.Basis ASP value as calculated can calculate corresponding VSP value subsequently.Then, use above-mentioned equation, can calculate each regional relative size and leakage size.Because all these are of a size of the percentage that opens wide the wind tank systems fully, these percentage summations should be 100%.Use computer iterations program as shown in Figure 4, can repeat to adjust the FSP value, add that up to the All Ranges size summation of leakage size is 100%.At this moment, determined the right value of FSP and All Ranges relative size.Fig. 5 show the display screen on the controller 36 during the wind groove size assessment process and when this process finishes result displayed.
At this moment, step 52 finishes, and controller 36 has calculated the opposed area wind groove size of regional wind groove 28,30,32.In case finish this opposed area wind groove size calculation, then should obtain the life-span of this system relatively reliably.Even so, can periodically repeat this calculating.
In addition, except the inventive method of definite air handler static pressures of above-mentioned reference (promptly, disclosed algorithm in the pending application application of above-mentioned reference) outside, can also adopt other known method to determine this static pressure within the scope of the invention, for example the working pressure meter manually carries out pressure measxurement.
In step 54, these amount of size, about the information of the size of parts 22 and capacity and (step 50) is set is used to calculate the maximum airflow value of each zone (1,2,3).
Finish the calculating of each regional maximum airflow by following analysis.The wind tank systems (the All Ranges air-lock is unlimited fully) of supposing whole room is designed to hold and makes the temperature change parts 22 work the highest required system airflow that is installed in premises, thereby determines the highest system gas flow valuve.Controller 36 is understood the capacity and the air-flow requirement of temperature change parts 22 (stove of being installed, air regulator or heat pumps) by automatic layoutprocedure.Controller 36 calculates the highest system airflow (HAS) thus.In one embodiment:
Numerical value the greater among the HAS=(xCFM/TON, y* blast furnace air-flow)
" CFM " or cubic feet per minute are meant the metric unit of air-flow.Usually measure the capacity of air regulator and heat pump with TON.In one embodiment, x=450, y=1.12.Certainly, x can use different numerical factors with y in this calculating.
Determine highest zone airflow subsequently.All air-locks are unlimited fully, and the share of the total system airflow that each zone obtained depends on " relative size " that delivers air to this regional wind slot part." relative size " of wind slot part is to allowing air more or less to flow through the tolerance of the ability of wind slot part under particular system pressure.Therefore, having more, the share of the system airflow that the zone obtained of strong wind groove size will be higher than the little share that the zone obtained of wind groove size.Controller 36 has been determined the apparent wind groove size of All Ranges in the system.These relative sizes can be expressed as the percentage of total wind tank systems and are labeled as S1, S2, S3...Sn, and wherein n is the number in zone in the system.So for each zone, highest zone airflow (HZAi) can be calculated to be:
HZAi＝Si*HAS，i＝1?to?n.
Be noted that HZAi is All Ranges air-lock (just as this system is not divided into a plurality of zones) each regional maximum prefetch phase air-flow when opening wide fully.
Determine maximum region (MAX Zone) airflow limit subsequently.In partition system, thus when air-lock 34 open wide and the closed air of between zones of different, redistributing when mating its demand that changes heating or refrigeration, the air-flow that any specific region obtains sometimes is higher than " the proper share " of system airflow.This makes this district system provide higher levels of comfort level for this regional occupant.Yet along with air-flow increases, in some position, the airborne noise in the zone becomes and can't receive.Therefore each zone is needed maximum (MAX) airflow limit.To a certain extent, the balance between comfort level and the noise is the subjectivity decision of depending on occupant's preference.Yet, become easy and consistent in order to minimize the demand that setter or house owner are adjusted and system to be installed, controller 36 with maximum (MAX) regional gas stream (MZA) limit " convergent-divergent " to the highest zone airflow of calculating above.In one embodiment, user's (occupant or setter) can be each regional of selecting in four airflow limit: LOW, NORMAL, HIGH and MAXIMUM.Provide this option at controller 130 and/or 36 places.Max zone airflow limit can be calculated to be:
Select
MZAi
LOW HZAi
NORMAL 1.5*HZAi (can be factory defaults)
HIGH 2*HZAi
MAXIMUM 2*HZAi
MAXIMUM selects to have identical airflow limit with HIGH, and as described below, this selection is used to reduce system airflow and if possible is used to regulate set point.Yet if can't regulate, when adopting MAXIMUM to be provided with, heating or refrigeration stage (step 56 obtains explaining hereinafter) reduce never.Can't accept even noise becomes, use the MAXIMUM airflow limit still can in the zone, obtain comfort level.
As previously mentioned, each zone (1,2,3) allow operating personnel to set the desired temperature set point at controller 130.In addition, controller 130 provides each regional actual temperature and actual humidity, and humidity set point (if this system is enough advanced).In step 58, the expection stage that controller 36 calculates heating/refrigeration.Be _ _ _ _ _ _ _ title of submission is to disclose a kind of method of calculating the expection stage of heating or freezing among the u.s. patent application serial number No.______ of " Controlof Multi-Zone and Multi-Stage HVAC System ".Based on equipment size and this heating/refrigeration stage, some total system airflow are incited somebody to action known subsequently or can be calculated by controller 36.The expection damper position that controller 36 can also calculate each zone to be satisfying the temperature set-point of needs in this zone, and considers the actual temperature in this moment of each zone.The algorithm of carrying out these calculating is well known in the art.
In step 60, controller 36 calculates the expection air-flow in each zone by considering damper position and relative regional wind groove size in total system airflow, each zone subsequently.Air-lock 34 be adjusted to its moving blade can be controlled to open wide and closure between any angular position.As previously mentioned, in one embodiment, air-lock is controlled to 16 positions, be labeled as 0 to 15, wherein 0 is closed fully, and 15 for unlimited fully; Can obtain therebetween each position by the angular movement step that equates.This embodiment also supposes to be linear relationship between dampers angular position and its permission air-flow " unlimited degree " or the relative ability.
Utilize linear relationship, the relative wind ability D of each damper position is calculated as:
For j, D=j/15; J=0 to 15.
Therefore, for position 15 (unlimited fully), the relative wind ability is 100%, and for position 0 (closed fully), the relative wind ability is 0.
This relation also may be non-linear, can use laboratory tests to determine the relation of the air-lock of particular type, and this relation can be used for following calculating subsequently.
Each regional apparent wind groove size in controller 36 using systems is S1 to Sn for the system marks that still has n zone.Controller 36 modulation areas air-locks 34, thus require air more or less is transported to each zone in response to each regional comfort level.Controller 36 is determined the expection damper position and the corresponding air-lock gas flow capability in each zone.These air-lock gas flow capability are labeled as D1 to Dn.The also known needs of controller 36 flow through the total system airflow As of whole system.According to these numerical value, controller 36 calculates the mark Ai that is transported to each regional air-flow:
Ai＝As*(Di*Si)/(SUM(Di*Si)，i＝1?to?n)
In step 62, controller 36 compares expection air-flow and its greatest limit in each zone.If all less than the maximum airflow of respective regions, then controller 36 forwards step 64 to the expected areas air-flow that all calculate, operate this HVAC system simply.
Yet if the regional gas stream of expection surpasses its maximum airflow, whether controller 36 inquiries can reduce total system airflow.This is generally the function of the design of temperature change parts and air processor.If can reduce total system airflow, then this air-flow is reduced to the lower limit in step 64, controller returns step 60 to recomputate each regional actual airflow and to turn back to step 62.
Yet if can't reduce total system airflow, controller 36 forwards step 66 to, considers not occupying the availability of regional adjustment in this step.Whether controller 30 permission operating personnel set a certain zone and are not occupied.For example, can will only remain on the low slightly temperature of regulating degree, thereby reduce the operating cost of HVAC system 20 in the room that the special time period in every year just uses.If set this room in the system 20 the zone that do not occupy, then as the part of step 66, controller 36 is considered to provide additional adjusting in this zone.
Usually, do not occupy the set point minimum temperature that is configured to heat (for example 60 degree) in zone or the maximum temperature (for example 85 degree) of refrigeration.Adopt these set points, these zones seldom need any refrigeration or heating, and its air-lock remains closed.This is conserve energy not only, also allows more air-flow (capacity) to be transported to and occupies the zone, thereby obtain the comfort level set point that this has occupied the zone.Yet, surpass its maximum airflow limit if be transported to the expection air-flow that occupies the zone, but controller 36 opens wide any air-lock in zone that do not occupy so that its absorption portion air-flow.This makes cosily to regulate and occupies the zone, remains on simultaneously in its expection noise maximum airflow limit.Controller 36 is not realized above-mentioned this point till occupying the district heating set point by raising or reduce the order of refrigeration set point in not occupying the zone and causing its air-lock to open wide thus.In the disclosed embodiment, the limit is applied to this set point adjustment.The heating set point is not adjusted to the highest heating set point that is higher than in arbitrary (occupying) zone, and the refrigeration set point is not adjusted to the minimum refrigeration set point that is lower than in arbitrary zone.Usually, also can be simply directly open wide and do not occupy the air-lock 34 in the zone and do not adjust its set point, and allow its adjustment is become any preset limit.
Equally, do not occupy zone set point, then finish this adjustment, and this system turns back to step 68 (can recomputate the zone damper position), turn back to step 60 and 62 subsequently if can adjust.Do not occupy zone set point (at first, or again can't carry out this adjustment) if can't adjust, then system forwards step 70 subsequently to, considers to adjust the set point that has occupied the zone in this step.
In the disclosed embodiment, the zone of heating or refrigeration does not occupy the zone greater than its maximum airflow limit and all and has been open to its limit if desired, controller not to be adjusting the set point that other has occupied the zone to occupying the similar mode in zone, thereby with more air-flows these zones of leading.At an embodiment, occupied the heating set point the adjustment limit be set as than the highest heating set point in any zone low be no more than 3 the degree.Similarly, with occupy the refrigeration set point the adjustment limit be set as than minimum refrigeration set point height be not less than 3 the degree.Equally, can select the different limit.
If controller 36 can be adjusted and occupy zone set point, then carry out this adjustment.Controller 36 turns back to step 68 subsequently, turns back to step 60 and 62 then.Yet, having occupied zone set point if can't adjust, this system forwards step 56 to, and considers whether can obtain lower heating or refrigeration stage.If can obtain a certain lower heating or refrigeration stage, then system forwards the lower stage to, and turns back to step 72 to recomputate total system airflow, turns back to step 68,60,62 etc. subsequently.As previously mentioned, be provided with if a certain zone has been set as MAXIMUM, the air-flow that this zone received surpasses its maximum airflow just, then execution in step 56 not.
If can't obtain the lower stage, then stop heating and refrigeration till next computing cycle.Carry out aforementioned calculation termly.
Embodiments of the invention are disclosed.Those skilled in the art will be appreciated that, can carry out specific adjustment within the scope of the invention.For this reason, following claims is used for determining true scope of the present invention and content.
Claims (11)
1. HVAC system controller comprises:
Controller connects the wind groove size related information of wind gathering slots, each zone in a plurality of zones that described wind groove leads to described controller is associated; And
Described controller is based on each regional maximum airflow of described information calculations.
2. controller as claimed in claim 1 is wherein set airflow limit, and considers to calculate described maximum airflow with wind groove size.
3. controller as claimed in claim 2 wherein can be set described airflow limit by operating personnel.
4. controller as claimed in claim 1, wherein said controller also calculate the expection air-flow in each zone, and the described maximum airflow in described expection air-flow and each described zone is compared.
5. controller as claimed in claim 4, wherein said controller are assessed obtainable option to reduce to flow to the air-flow that any described expection air-flow surpasses the zone of described maximum airflow.
6. controller as claimed in claim 5, wherein, as an option, described controller considers whether can reduce to flow through the total air flow of this system to realize described reducing.
7. controller as claimed in claim 5, wherein, as an option, the assessment of described controller whether can increase flow to arbitrary region air-flow to realize described reducing.
8. controller as claimed in claim 7, wherein said controller at first consider whether can adjust any zone set point that do not occupy to be increased to realize described air-flow.
9. controller as claimed in claim 8, wherein said controller consider whether can adjust any zone set point that occupied subsequently to be increased to realize described air-flow.
10. HVAC system comprises:
Be used to change the temperature change parts of air themperature;
Supply air to the wind groove in a plurality of zones, and the air-lock that is associated with the described wind groove that leads to each described zone;
Controller is used for providing the temperature set-point and the actual temperature in each zone in described a plurality of zones;
System controller determines to lead to the wind groove size related information of described wind groove in each zone in described a plurality of zones; And
Described controller is based on the expection air-flow in each zone of described information calculations.
11. a HVAC system comprises:
Be used to change the temperature change parts of air themperature;
Supply air to the wind groove in a plurality of zones, and the air-lock that is associated with the described wind groove that leads to each described zone;
Zone controller offers system controller with temperature set-point and actual temperature in each zone in described a plurality of zones; And
Moving of the described air-lock that described system controller control is associated with each described zone, thereby can determine to flow through the relevant static pressure information of other the regional air-flow with respect to described a plurality of zones in each described zone, and described static pressure information is used to calculate the size of the described wind groove in each described zone with respect to other described wind groove in each zone in described a plurality of zones.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US53771704P | 2004-01-20 | 2004-01-20 | |
| US60/537,717 | 2004-01-20 | ||
| PCT/US2005/001086 WO2005072122A2 (en) | 2004-01-20 | 2005-01-12 | Method and system for automatically optimizing zone duct damper positions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1910405A true CN1910405A (en) | 2007-02-07 |
| CN1910405B CN1910405B (en) | 2012-09-05 |
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ID=34825940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580002842XA Expired - Fee Related CN1910405B (en) | 2004-01-20 | 2005-01-12 | Method and system for automatically optimizing zone duct damper positions |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1714087A4 (en) |
| CN (1) | CN1910405B (en) |
| AU (1) | AU2005208501B2 (en) |
| BR (1) | BRPI0506951A (en) |
| HK (1) | HK1102974A1 (en) |
| WO (1) | WO2005072122A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225989B (en) * | 2008-01-21 | 2010-06-02 | 西安建筑科技大学 | Wave type supply air system |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10184678B2 (en) | 2013-09-06 | 2019-01-22 | Carrier Corporation | System and method for measuring duct leakage in a HVAC system |
| FI128922B (en) * | 2019-12-03 | 2021-03-15 | Climecon Oy | Method and computer program product for selecting ventilation devices |
| CN112146256B (en) * | 2020-08-13 | 2022-10-11 | 浙江纳风净化技术有限公司 | Air pipeline silencing method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4549601A (en) * | 1982-06-21 | 1985-10-29 | Carrier Corporation | Variable volume multizone system |
| KR900001875B1 (en) * | 1985-02-20 | 1990-03-26 | 미쓰비시전기주식회사 | Air-conditioner |
| US4795088A (en) * | 1987-06-11 | 1989-01-03 | Mitsubishi Denki Kabushiki Kaisha | Air conditioning system |
| FI88432C (en) * | 1989-01-13 | 1993-05-10 | Halton Oy | FOERFARANDE FOER REGLERING OCH UPPRAETTHAOLLANDE AV LUFTSTROEMMAR OCH MOTSVARANDE I VENTILATIONSANLAEGGNINGAR OCH ETT VENTILATIONSSYSTEM I ENLIGHET MED FOERFARANDET |
| US5004149A (en) * | 1989-01-24 | 1991-04-02 | Kabushiki Kaisha Toshiba | Central air conditioning system having compensating control function for total heat load in a plurality of rooms |
| JPH02230046A (en) * | 1989-02-28 | 1990-09-12 | Matsushita Seiko Co Ltd | Duct type air conditioner |
| US5350113A (en) * | 1993-07-23 | 1994-09-27 | Landis & Gyr Powers, Inc. | Air flow control system and method for a dual duct system |
| US5579993A (en) * | 1995-01-06 | 1996-12-03 | Landis & Gyr Powers, Inc. | HVAC distribution system identification |
-
2005
- 2005-01-12 CN CN200580002842XA patent/CN1910405B/en not_active Expired - Fee Related
- 2005-01-12 EP EP05705640A patent/EP1714087A4/en not_active Withdrawn
- 2005-01-12 AU AU2005208501A patent/AU2005208501B2/en not_active Ceased
- 2005-01-12 BR BRPI0506951-3A patent/BRPI0506951A/en not_active IP Right Cessation
- 2005-01-12 WO PCT/US2005/001086 patent/WO2005072122A2/en not_active Application Discontinuation
-
2007
- 2007-07-11 HK HK07107446.8A patent/HK1102974A1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225989B (en) * | 2008-01-21 | 2010-06-02 | 西安建筑科技大学 | Wave type supply air system |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2005208501B2 (en) | 2010-11-25 |
| BRPI0506951A (en) | 2007-06-26 |
| HK1102974A1 (en) | 2007-12-07 |
| EP1714087A2 (en) | 2006-10-25 |
| WO2005072122A2 (en) | 2005-08-11 |
| WO2005072122A3 (en) | 2005-09-29 |
| CN1910405B (en) | 2012-09-05 |
| AU2005208501A1 (en) | 2005-08-11 |
| EP1714087A4 (en) | 2009-06-24 |
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