CN102128481B - Air conditioner as well as control method and device thereof - Google Patents
Air conditioner as well as control method and device thereof Download PDFInfo
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- CN102128481B CN102128481B CN 201010000338 CN201010000338A CN102128481B CN 102128481 B CN102128481 B CN 102128481B CN 201010000338 CN201010000338 CN 201010000338 CN 201010000338 A CN201010000338 A CN 201010000338A CN 102128481 B CN102128481 B CN 102128481B
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Abstract
The invention provides an air conditioner as well as a control method and device thereof, wherein the method comprises the following steps: acquiring an indoor temperature/humidity, an outdoor temperature/humidity and user parameters; calculating an initial heat load or initial cold load according to the indoor temperature/humidity, the outdoor temperature/humidity and the user parameters; calculating the output capacity of the air conditioner according to the initial heat load or initial cold load and a preset cooling rate or heating rate; and determining the frequency of a compressor according to the output capacity of the air conditioner. Through the invention, the air conditioner can run with a frequency generated when the running efficiency of the air conditioner is the optimum efficiency, thereby reducing the power consumption.
Description
Technical field
The present invention relates to a kind of air-conditioner and control method thereof and device.
Background technology
In correlation technique, convertible frequency air-conditioner (ability controllable type a home from home conditioning equipment) control mode is by adopting look-up table or PI fuzzy control, and at starting up's stage poor-performing, warming and cooling rate is slow and power consumption is high.And start does not move in the situation of Energy Efficiency Ratio the best, and the compressor frequency fluctuation is larger.
The slow and high problem of time per comparision of quantity of electricity not yet proposes effective solution at present for the warming and cooling rate of air-conditioner in the correlation technique.
Summary of the invention
The present invention aims to provide a kind of air-conditioner and control method and device, can solve the slow and high problem of time per comparision of quantity of electricity of warming and cooling rate of air-conditioner in the correlation technique.
A kind of control method of air-conditioner is provided according to an aspect of the present invention.
Control method according to air-conditioner of the present invention comprises: obtain indoor temperature/humidity, outdoor temperature/humidity and customer parameter; Calculate initial thermic load or initial refrigeration duty according to indoor temperature/humidity, outdoor temperature/humidity and customer parameter; Calculate the air-conditioning fan-out capability according to initial thermic load or initial refrigeration duty and default cooling or programming rate; Determine the frequency of compressor according to the air-conditioning fan-out capability.
Preferably, obtaining indoor temperature/humidity, outdoor temperature/humidity and customer parameter comprises: obtain respectively indoor temperature/humidity and outdoor temperature/humidity by indoor temperature-sensing probe, indoor humidity probe and the outdoor temperature-sensing probe that is arranged at air-conditioner outdoor unit, the outside humidity probe that is arranged at air conditioner room unit.
Preferably, initial thermic load or initial refrigeration duty comprise one of following or arbitrarily a plurality of combination: by body of wall, roof the heat initial thermic load or the initial refrigeration duty that form; Window moment is conducted to get initial thermic load or the initial refrigeration duty of thermosetting; Window moment insolation gets initial thermic load or the initial refrigeration duty of thermosetting; The initial thermic load that interior wall, floor, ceiling and ground form or initial refrigeration duty; The initial thermic load that the heat radiation of human body sensible heat forms or initial refrigeration duty; The initial thermic load that the lighting apparatus heat radiation forms or initial refrigeration duty; The refrigeration duty that the air-conditioning equipment heat radiation forms.
Preferably, calculate initial thermic load or initial refrigeration duty according to indoor temperature/humidity, outdoor temperature/humidity and customer parameter after, method also comprises: revise the in advance initial refrigeration duty of the initial thermic load in room or room of estimation according to initial thermic load or initial refrigeration duty.
Preferably, mainly be calculated according to the following formula initial thermic load or initial refrigeration duty: Q according to indoor temperature/humidity, outdoor temperature/humidity and customer parameter
τ=KF Δ t, wherein, K is heat transfer coefficient, unit is W/ (m
2K), F is the building enclosure reference area, and unit is m
2, Δ t is the load temperature difference, Q
τRepresent initial thermic load or initial refrigeration duty.
Preferably, after determining the frequency of compressor according to the air-conditioning fan-out capability, method also comprises: storing frequencies; After air-conditioner restarts, be chosen under the frequency of storage and move.
Preferably, determine that according to the air-conditioning fan-out capability method also comprises before the frequency of compressor: set up the corresponding relation between the frequency of air-conditioning fan-out capability and compressor; The frequency of determining compressor according to the air-conditioning fan-out capability comprises: the frequency of determining compressor according to corresponding relation.
A kind of control device of air-conditioner is provided according to an aspect of the present invention.
Control device according to air-conditioner of the present invention comprises: acquisition module is used for obtaining indoor temperature/humidity, outdoor temperature/humidity and customer parameter; The first processing module is used for calculating initial thermic load or initial refrigeration duty according to indoor temperature/humidity, outdoor temperature/humidity and customer parameter; The second processing module is used for according to initially thermic load or initial refrigeration duty and default cooling or programming rate calculate the air-conditioning fan-out capability; The 3rd processing module.Be used for determining according to the air-conditioning fan-out capability frequency of compressor.
Preferably, control device also comprises: memory module is used for storing frequencies; Select module, be used for after air-conditioner restarts, be chosen under the frequency of storage and move.
According to an aspect of the present invention, provide a kind of air-conditioner, this air-conditioner comprises above all features of the control device of air-conditioner.
The present invention adopts and obtains indoor temperature, outdoor temperature and customer parameter; Calculate initial thermic load or initial refrigeration duty according to indoor temperature, outdoor temperature and customer parameter; Calculate the air-conditioning fan-out capability according to initial thermic load or initial refrigeration duty and default cooling or programming rate; Determine the frequency of compressor according to the air-conditioning fan-out capability, overcome the slow and high problem of time per comparision of quantity of electricity of warming and cooling rate of air-conditioner, and then reached air-conditioner is worked under the frequency of optimum efficiency, reduce the effect of power consumption.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation according to the air conditioner controlling device of the embodiment of the invention;
Fig. 2 is the flow chart according to the air-conditioner control method of the embodiment of the invention;
Fig. 3 is the flow chart according to the preferred air-conditioner control method of the embodiment of the invention;
Fig. 4 is the schematic diagram according to the refrigerating capacity frequency curve of the air-conditioner of the embodiment of the invention;
Fig. 5 is the schematic diagram according to the efficiency curve of the frequency of the air-conditioner of the embodiment of the invention;
Fig. 6 is the schematic diagram according to the air conditioner controlling device of the embodiment of the invention.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
Fig. 1 is the structural representation according to the air conditioner controlling device of the embodiment of the invention.
The control device of air-conditioner of the present invention is by determining optimum efficiency FREQUENCY CONTROL pattern (namely under the comfortable target of user's expection with battery saving mode operation), make the air-conditioning can be in actual use, can be when satisfying client's temperature fall time and temperature fluctuation demand, in most of operation service time, reach energy-conservation purpose with the optimum efficiency frequency.Corresponding load-the frequency curve of different type of machines configuration, frequency-efficiency curve.
In an embodiment of the present invention, indoor, outdoor temperature/humidity that air conditioner controlling device obtains, parametric user's setup parameter that the user sets (such as room area, amount of capacity, towards, window ara, whether window, territory of use and number etc., when not arranging, the user adopts default value), the cooling of start starting stage/programming rate instruction, calculate indoor temperature and the temperature difference of design temperature, indoor temperature difference rate of change, the initial heat in room (cold) load, as the input parameter of Energy Saving Control.
Wherein, behind the initial heat in room (cold) load of air conditioner controlling device correction estimation, cooling/programming rate of setting according to the client calculates required air-conditioning fan-out capability Q
C, by the air-conditioning fan-out capability Q that stores in the air-conditioner controller data storage cell
CWith the database of compressor frequency f relation, determine compressor frequency.
The present invention can also relatively estimate the corresponding balance frequency point of room initial load and best efficiency Frequency point, finally provides original state optimum efficiency FREQUENCY CONTROL pattern.
Wherein, the present invention revises room load in real time according to the rate of change of room temperature; Frequency before the operation of automatic Memory compressor shutdown, the frequency operation when automatic selection was last time shut down when restarting; Simultaneously the client can customize room area, amount of capacity, towards, window ara, whether window, the parameters such as territory of use and number, air conditioner controlling device obtains chamber inside/outside temperature, room temperature rate of change by detecting temperature, the humidity of indoor set import and export.Convertible frequency air-conditioner provided by the invention (ability controllable type a home from home conditioning equipment) control is put, and can also comprise: indoor and outdoor temperature-sensing probe, moisture probe, for detection of and export the measured value of indoor and outdoor temperature, humidity; Data processing unit is used for according to indoor temperature, calculates the temperature difference of indoor temperature and design temperature, and the initial heat in room (cold) load is as the input parameter of Energy Saving Control; In the data storage cell, be used for the air-conditioning fan-out capability Q of storage
CDatabase with compressor frequency f relation; The energy-saving run controller is used for according to the balance frequency point under room heat (cold) load, the corresponding room load, in conjunction with frequency-efficiency curve, determines optimum efficiency FREQUENCY CONTROL pattern under every kind of cooling/programming rate of start.
Wherein, indoor temperature-sensing probe, moisture probe are arranged on indoor set into and out of the position, air port, and outdoor temperature-sensing probe, moisture probe are arranged on off-premises station air inlet position; Frequency-the efficiency curve of default various temperature in the energy-saving run controller by relatively estimating room initial load and corresponding balance frequency point and best efficiency Frequency point, obtains the optimum efficiency FREQUENCY CONTROL pattern under corresponding start cooling/programming rate.
According to embodiments of the invention, provide a kind of control method of air-conditioner.
Fig. 2 is the flow chart according to the air-conditioner control method of the embodiment of the invention.
As shown in Figure 2, the method comprises the steps that S202 is to step S208:
Step S202 obtains indoor temperature/humidity, outdoor temperature/humidity and customer parameter;
Step S204 calculates initial thermic load or initial refrigeration duty according to indoor temperature/humidity, outdoor temperature/humidity and customer parameter;
Step S206 calculates the air-conditioning fan-out capability according to initial thermic load or initial refrigeration duty and default cooling or programming rate;
Step S208 determines the frequency of compressor according to the air-conditioning fan-out capability.
Air-conditioner of the present invention obtains indoor temperature/humidity, outdoor temperature/humidity and customer parameter and can comprise: obtain respectively indoor temperature/humidity and outdoor temperature/humidity by indoor temperature-sensing probe, the moisture probe that is arranged at air conditioner room unit and outdoor temperature-sensing probe, the moisture probe that is arranged at air-conditioner outdoor unit.
Wherein, initial thermic load or initial refrigeration duty can comprise one of following or arbitrarily a plurality of combination: by body of wall, roof the heat initial thermic load or the initial refrigeration duty that form; Window moment is conducted to get initial thermic load or the initial refrigeration duty of thermosetting; Window moment insolation gets initial thermic load or the initial refrigeration duty of thermosetting; The initial thermic load that interior wall, floor, ceiling and ground form or initial refrigeration duty; The initial thermic load that the heat radiation of human body sensible heat forms or initial refrigeration duty; The initial thermic load that the lighting apparatus heat radiation forms or initial refrigeration duty; The refrigeration duty that the air-conditioning equipment heat radiation forms.
Calculate initial thermic load or initial refrigeration duty according to indoor temperature, outdoor temperature and customer parameter after, said method can also comprise: revise the in advance initial refrigeration duty of the initial thermic load in room or room of estimation according to initial thermic load or initial refrigeration duty.
Air conditioning control device can be calculated according to the following formula initial thermic load or initial refrigeration duty: Q according to indoor temperature/humidity, outdoor temperature/humidity and customer parameter
τ=KF Δ t, wherein, K is heat transfer coefficient, unit is W/ (m
2K), F is the building enclosure reference area, and unit is m
2, Δ t is the load temperature difference, Q
τRepresent initial thermic load or initial refrigeration duty.
Wherein, after determining the frequency of compressor according to the air-conditioning fan-out capability, method can also comprise: storing frequencies; After air-conditioner restarts, be chosen under the frequency of storage and move.
The present invention is before determining the frequency of compressor according to the air-conditioning fan-out capability, and method can also comprise: set up the corresponding relation between the frequency of air-conditioning fan-out capability and compressor; The frequency of determining compressor according to the air-conditioning fan-out capability comprises: the frequency of determining compressor according to corresponding relation.
Fig. 3 is the flow chart according to the preferred air-conditioner control method of the embodiment of the invention.
As shown in Figure 3, utility model convertible frequency air-conditioner of the present invention (ability controllable type a home from home conditioning equipment) energy-saving control method specifically may further comprise the steps:
Step S301, the corresponding load-frequency curve of air-conditioning configuration of different type of machines, the frequency-efficiency curve under the different start cooling/programming rate.
Step S302, the initial heat of calculated room (cold) load.
Air-conditioner of the present invention obtains indoor temperature/humidity, outdoor temperature/humidity; The input design temperature, user's setup parameter (such as room area, amount of capacity, towards, window ara, whether window, territory of use and number etc., when not arranging, the user adopts default value), the cooling of start starting stage user input/programming rate instruction, as fast, in, wait some shelves slowly.
Usually, at indoor set indoor temperature-sensing probe, indoor humidity probe are set into and out of the air port, outdoor temperature-sensing probe, outside humidity probe are set in off-premises station air inlet position.By detecting indoor set into and out of temperature, the off-premises station intake air temperature in air port, obtain indoor temperature, outdoor temperature, as calculating indoor temperature and the temperature difference of design temperature, indoor temperature difference rate of change, the basic data of the initial heat in room (cold) load.
Wherein, space cooling load Q is cold, and the architectural exterior-protecting construction that comprises imports the refrigeration duty that indoor heat (heat that the heat that solar radiation enters and the room air temperature difference are imported into through building enclosure) forms into, the refrigeration duty that human-body radiating forms, the refrigeration duty that the lighting heat radiation forms, and the refrigeration duty of other equipment coolings formation.Be calculated as follows (with reference to " simple and clear Air-conditioner design handbook):
The refrigeration duty that heat forms that gets by body of wall, roof can be calculated as follows:
Q
τ＝KFΔt
1W (1)
In the formula, K: heat transfer coefficient, W/ (m
2K); F: building enclosure reference area, m
2Δ t1: the calculation of cooling load temperature difference of building enclosure, be called for short the load temperature difference.
Window moment is conducted to get the refrigeration duty of thermosetting, can be calculated as follows:
Q
c，τ＝KFΔt
2W (2)
In the formula, Δ t2: calculate the load temperature difference constantly, ℃; K: heat transfer coefficient, the desirable 5.8W/ (m of single window
2K); Desirable 2.9W/ (the m of double window
2K).
Window insolation gets the refrigeration duty of thermosetting, can be calculated as follows:
During without interior screening day: Q
τ=X
gX
dFJ
W, τW (3)
In following formula, X
gStructure correction factor for window; J
W, τWhen calculating constantly, see through the refrigeration duty without the total solar radiation thermosetting of internal sunshade exterior window, be called for short load intensity, W/m
2X
dBe the place correction factor.
Interior screening is arranged during day: Q
τ=X
gX
dX
zFJ
N, τW (4)
In the formula, J
W, τ: when calculating constantly, see through the load intensity that the internal sunshade exterior window is arranged, W/m
2X
z: the place correction factor.
Interior wall, floor, the refrigeration duty that ceiling and ground form, but summary is calculated as follows:
Q
τ＝KF(t
wp+Δt
j-t
N)W (5)
In the formula, t
Wp: the outdoor calculating mean daily temperature of air conditioning in summer, ℃; t
N: the room conditioning accounting temperature, ℃; Δ t
j: consider the additive air temperature rise of the factors such as solar radiant heat, ℃.
The refrigeration duty that the heat radiation of human body sensible heat forms can be calculated as follows:
Q
τ＝nn′q
1X
τ-T W (6)
In the formula, n: indoor total number of persons; N ': the coefficient of trooping; Q1: man's heat dissipation capacity during the different chamber gentle quality of work, W; T: personnel enter the moment of air-conditioned room, h; τ-T: arrive when personnel enter the room and calculate time constantly, h; X
τ-T: the cooling load coefficient of τ-T time human body sensible heat heat dissipation capacity.
The refrigeration duty that the lighting apparatus heat radiation forms can be calculated as follows:
Incandescent lamp: Q
τ=NX
τ-TW (7)
Fluorescent lamp: Q
τ=n
1n
2NX
τ-TW (8)
In the formula, N: lighting power demand, W; N1: the ballast consumes power coefficient, when the ballast of surface fluorescent fixture is contained in the air-conditioned room, n1=1.2; When the ballast of concealed installation fluorescent lamp is installed in the ceiling, desirable n1=1.0; T: turn on light constantly h; τ-T: be carved into when turning on light and calculate time constantly, h; X
τ-T: the cooling load coefficient of τ-T time illuminating and heat radiating.
The refrigeration duty that equipment cooling forms can be calculated as follows:
Q
τ＝Q′X
τ-TW (9)
In the formula, Q: the true heat gain value of equipment, W; T: equipment investment service time, h; τ-T: from equipment investment use the time be carved into and calculate time constantly, h; X
τ-T: the cooling load coefficient of τ-T time device heat radiation.
The computational methods of the actual heat radiation of electric heating and electrical equipment are as follows:
Heating equipment: Q '=1000n
1n
2n
3n
4N W (10)
When process equipment and motor thereof all are placed on when indoor:
Q′＝1000n
1n
2n
3N/ηW (11)
When process equipment indoor, and motor is not when indoor:
Q '=1000n
1n
2n
3N W (12) when process equipment not indoor, only have motor to be placed on when indoor:
In following formula, N: total installation power of equipment, W; η: motor efficiency can be checked in by product sample; N1: usage factor (installation coefficient), namely the ratio of the maximum real wasted work rate of motor and installation power is generally 0.7-0.9; N2: the while coefficient of utilization, the installation power of namely using simultaneously and the ratio of total installation power are generally 0.5-0.8; N3: load coefficient, the reflection average load reaches the degree of Design cooling load, is generally 0.5; N4: to the heating equipment of airtight consumption cover is arranged, the coefficient of heat is taken away in the consideration air draft, generally gets 0.5.
Winter, thermic load then comprised heat consumption and the indoor cold air heat consumption of the friendly door and window of heating slit infiltration of building enclosure.The heat consumption of going along with sb. to guard him should comprise basic heat loss and adiabatic humidification.
The basic heat loss of building enclosure is calculated as follows:
Q
τ＝αKF(t
n-t
wn)W (14)
In the formula, t
Wn: winter outdoor calculate temperature, ℃; t
n: winter indoor calculate temperature, ℃; α: building enclosure temperature difference correction skill.
The adiabatic humidification of building enclosure should be determined by its percentage that accounts for basic heat loss.Every additional (or correction) percentage is with reference to " heating and ventilation and In Air Conditioning Design standard ".
Multilayer and high-rise civil building can be calculated as follows the heat consumption that cold air is infiltrated in the crack between a door and its frame crack:
Q
τ＝0.28c
pρ
wnL1(t
n-t
wn)m W (15)
In the formula, c
p: pressurization by compressed air specific heat, c
p=1kJ/ (kg ℃); ρ
Wn: outdoor air density, kg/m
3L: infiltrate indoor cold air amount, m through every meter door and window slit
3/ (hm); L: door and window gap length, m; M: Air Infiltration towards correction factor.
Step S303 revises the initial refrigeration duty in room (following all calculating as an example of cooling condition example, the calculation procedure of heating condition is identical, repeats no more) herein.
The initial refrigeration duty in the room that calculates is revised: Q
Cold'=kQ
Cold
In the formula, k is the refrigeration duty correction factor.Correction factor is compared with the load value of estimation according to the measured value in the typical room environmental simulation test chamber and is got, for example, 35 ℃ of outdoor environment temperatures, in the time of indoor 32 ℃, the room initial load measured value in the typical room environmental simulation test chamber is Q
a, estimated value is that Q is cold, then refrigeration duty correction factor k=Q
a/ Q
ColdIn fact, with the actual test value of environmental simulation test chamber as the initial refrigeration duty value of revised standard room.
Step S304, the air of calculated room total capacity is down to the required cold Q of design temperature from initial temperature
0,
The refrigeration total load comprises that the air of the initial refrigeration duty in room and room total capacity is down to the required cold Q of design temperature from initial temperature
0
Q
0Be calculated as follows:
After obtaining indoor temperature and humidity data, calculate enthalpy h1, the h2 of air, enthalpy h calculates as follows:
h＝1.01t+d(2500+1.84T)/1000
In the formula, d is water capacity; Enthalpy difference is Δ h=h1-h2.
Therefore the air of room total capacity is down to the required cold Q of design temperature from initial temperature
0For: Q
0=m (h0-hs)=ρ
AirV Δ h kJ
In the following formula, m: space air gross mass, kg; V: the space air cumulative volume, can regard as and be equal to room cumulative volume, m
3h
0, hs is respectively original state, the enthalpy when arriving design temperature.
Get initial temperature T during the start original state
0Median T with the T setting
mCalculate the chilling requirement Q of air institute of initial room total capacity
0
Step S305 calculates and estimates that room load reaches the time t balance of balance.
According to the space cooling load Q that calculates
Cold' and original state be down to the chilling requirement Q of air institute of design temperature room total capacity
0, air-conditioning fan-out capability Q
C, can calculate and estimate that room load reaches the time t balance of balance.Formula is as follows:
Q
Cold' * t
Balance+ Q
0=Q
C* t
Balance(16)
The unit of each symbol: Q in the formula
Cold', kW; Q
0, kJ; Q
C, kW.
Otherwise, also can calculate required air-conditioning fan-out capability Q according to equilibration time
C
Step S306, air-conditioning fan-out capability Q
CCalculating.
Cooling/programming rate of starting stage, as fast, in, wait some grades setting slowly, can be exchanged into t and set, for example: fast shelves 8min≤t fast≤12min; Among mid ranger 15min≤t≤20min; At a slow speed shelves 30min≤t slow≤40min.
According to cooling/programming rate of setting, the mean value tm that gets temperature fall time calculates corresponding air-conditioning fan-out capability Q as equilibration time
CFor example set fast shelves, be 10min the average time that calculates respectively 8min, 12min, calculates the fan-out capability Q of corresponding air-conditioning according to formula (16)
C
Step S307 is according to air-conditioning fan-out capability Q
CWith the relation of compressor frequency f, determine compressor frequency f.
The present invention is behind the initial heat in the room of revising estimation (cold) load, and cooling/programming rate of setting according to the client calculates required air-conditioning fan-out capability Q
C, by the air-conditioning fan-out capability Q that stores in the air-conditioner controller memory cell
CWith the database of compressor frequency f relation, determine compressor frequency.
Consider the situation of actual variable working condition, air-conditioning fan-out capability Q
CClosely related with parameters such as outdoor temperature Tw, room indoor temperature Tn, compressor frequency f, be the ternary functional relation of a more complicated, can be expressed as: Q
C=F (f, T
w, T
n).
The present invention can set up Q by test
CWith the database of f relation, determine that each frequency f is at refrigerating capacity Q corresponding to different temperature
C, be stored in the air-conditioner controller memory cell, re-use interpolation method and just can obtain comparatively exactly refrigerating capacity under each state.
Compressor frequency of the present invention can be with reference to the existing control method of tabling look-up, compressor frequency scope 6～85Hz when for example freezing, and step-length is with reference to existing design.Q
CBe reduced to F (f, Q with the f relation
C).
(1), by testing F (f, the Q that determines under different outdoor temperatures, indoor temperature
C).
For example outdoor temperature is chosen 26 ℃, 29 ℃, 33 ℃, 35 ℃, 40 ℃, and indoor temperature is chosen 27 ℃, 30 ℃, 35 ℃, determines outside different chamber/F (f, Q under the indoor temperature combination
C), shown in being listed as follows:
Fig. 4 is the schematic diagram according to the refrigerating capacity frequency curve of the air-conditioner of the embodiment of the invention.
Refrigerating capacity-frequency curve among the present invention under a certain temperature of a certain type is referring to shown in Figure 4.
(2): under each temperature spot to the frequency f of a best Energy Efficiency Ratio should be arranged
Emax, see the following form.
Fig. 5 is the schematic diagram according to the efficiency curve of the frequency of the air-conditioner of the embodiment of the invention.
Frequency-efficiency curve among the present invention under a certain temperature of control device is referring to shown in Figure 5.
(3), record the corresponding refrigerating capacity of each frequency under each temperature spot, see the following form, be stored in the controller mnemon.Therefore can find corresponding frequency (unlisted frequency uses interpolation method to obtain) according to refrigerating capacity.
As shown in the table in detail:
| 6Hz | …… | 85Hz | |
| F1(f，Q C) | Q 11 | …… | Q 11n |
| …… | …… | …… | …… |
| F15(f，Q C) | Q 151 | …… | Q 15n |
Q in the upper table
11-Q
15nBe the corresponding refrigerating capacity of each frequency.
Step S308, the compressor frequency f0 of original state consideration Energy Efficiency Ratio chooses.
Calculate the fan-out capability Q of required air-conditioning according to current temperature fall time
C, again by the frequency that stores, the database of air conditioner refrigerating amount, find corresponding frequency f
0The present invention can according to relatively estimating the corresponding balance frequency point of room initial load and best efficiency Frequency point, finally provide original state optimum efficiency FREQUENCY CONTROL pattern.
If the first situation is f
0≤ f
Emax, then preferentially select the Frequency point f that Energy Efficiency Ratio is the highest in frequency-efficiency curve
EmaxOperation;
If the second situation is f
0＞f
Emax, then initially choose the f0 operation.
Starting stage f
0Behind the stable operation 5min, revise in good time and work as preload, calculate and estimate that room load reaches the time t of balance
BalanceIf, t
Balance＞t
Set, then improve compressor frequency with certain step-length, such as 2Hz.Again according to the t balanced adjustment compressor frequency that calculates, until t
Balance≤ t
Set
Step S309, the automatic Memory function.
Frequency before the operation of automatic Memory compressor shutdown, the frequency operation when automatic selection was last time shut down when restarting.
Step S310, room load is revised in real time.
After actual motion load in room reaches balance, room load is revised in real time with reference to preceding method, satisfying under the prerequisite that user's comfortableness requires, avoiding as possible running frequency to cross significantly and depart from for a long time room load balance frequency point and move in inefficient side, thus the reduction power consumption.
The present invention is by calculating indoor temperature and the temperature difference of design temperature, indoor temperature difference rate of change, the initial heat in room (cold) load, input parameter as Energy Saving Control, system is accurately grasped work as preload, and be given in optimum efficiency FREQUENCY CONTROL pattern under the corresponding start cooling/programming rate in good time, avoided thus current convertible frequency air-conditioner (the ability controllable type a home from home conditioning equipment) situation that warming and cooling rate is slow and power consumption is high.
Can find out that by above the present invention can make room temperature under the transit time that the user allows, with the efficient frequency operation of the best, avoid as possible running frequency to cross significantly and depart from for a long time room load balance frequency point and move in inefficient side, thus the reduction power consumption.
According to the embodiment of the invention, provide a kind of control device of air-conditioner.
Fig. 6 is the schematic diagram according to the air conditioner controlling device of the embodiment of the invention.
As shown in Figure 6, this device comprises: acquisition module 601, the first processing module 602, the second processing module 603 and the 3rd processing module 604.
Wherein, acquisition module 601 is used for obtaining indoor temperature, outdoor temperature and customer parameter; The first processing module 602 is used for calculating initial thermic load or initial refrigeration duty according to indoor temperature, outdoor temperature and customer parameter; The second processing module 603 is used for according to initially thermic load or initial refrigeration duty and default cooling or programming rate calculate the air-conditioning fan-out capability; The 3rd processing module 604 is for the frequency of determining compressor according to the air-conditioning fan-out capability.
Among the present invention, this control device can also comprise: memory module 605 and selection module 606.
Wherein, memory module 605 is used for storing frequencies; Select module 606, be used for after air-conditioner restarts, be chosen under the frequency of storage and move.
The present invention can also provide a kind of air-conditioner, and this air-conditioner has the control device of above-mentioned air-conditioner.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the control method of an air-conditioner is characterized in that, comprising:
Obtain indoor temperature and/or humidity, outdoor temperature and/or humidity and customer parameter;
Calculate initial thermic load or initial refrigeration duty according to described indoor temperature and/or humidity, described outdoor temperature and/or humidity and described customer parameter;
Calculate the air-conditioning fan-out capability according to described initial thermic load or described initial refrigeration duty and default cooling or programming rate;
Determine the frequency f 0 of described compressor according to described air-conditioning fan-out capability.
2. method according to claim 1 is characterized in that, obtains indoor temperature and/or humidity, outdoor temperature and/or humidity and comprises:
Obtain respectively described indoor temperature and/or humidity and described outdoor temperature and/or humidity by indoor temperature-sensing probe, indoor humidity probe and the outdoor temperature-sensing probe that is arranged at described air-conditioner outdoor unit, the outside humidity probe that is arranged at air conditioner room unit.
3. method according to claim 1 is characterized in that, described initial thermic load or described initial refrigeration duty comprise one of following or arbitrarily a plurality of combination:
Initial thermic load or the initial refrigeration duty that heat forms that get by body of wall, roof;
Window moment is conducted to get initial thermic load or the initial refrigeration duty of thermosetting;
Window moment insolation gets initial thermic load or the initial refrigeration duty of thermosetting;
The initial thermic load that interior wall, floor, ceiling and ground form or initial refrigeration duty;
The initial thermic load that the heat radiation of human body sensible heat forms or initial refrigeration duty;
The initial thermic load that the lighting apparatus heat radiation forms or initial refrigeration duty;
The refrigeration duty that the air-conditioning equipment heat radiation forms.
4. each described method in 3 according to claim 1 is characterized in that, after calculating initial thermic load or initial refrigeration duty according to described indoor temperature and/or humidity, described outdoor temperature and/or humidity and described customer parameter, described method also comprises:
Revise the in advance initial refrigeration duty of the initial thermic load in room or room of estimation according to described initial thermic load or described initial refrigeration duty.
5. each described method in 3 according to claim 1 is characterized in that,
Mainly be calculated according to the following formula the initial thermic load in room or initial refrigeration duty according to described indoor temperature, described outdoor temperature and described customer parameter:
Q
τ=KF Δ t, wherein,
Described K is heat transfer coefficient, and unit is W/ (m
2K), described F is the building enclosure reference area, and unit is m
2, described Δ t is the load temperature difference, described Q
τRepresent the initial thermic load in described room or described initial refrigeration duty.
6. method according to claim 1 is characterized in that, in the frequency f of determining described compressor according to described air-conditioning fan-out capability
0Afterwards, described method also comprises:
According to pre-stored frequency and the curve data between the efficiency, determine best Energy Efficiency Ratio frequency f
Emax, by comparing f
EmaxWith described f
0Relation, determine the operating frequency of compressor.
7. method according to claim 1 is characterized in that,
Before determining the frequency of described compressor according to described air-conditioning fan-out capability, described method also comprises:
Set up the corresponding relation between the frequency of described air-conditioning fan-out capability and described compressor;
Determine that according to described air-conditioning fan-out capability the frequency of described compressor comprises: the frequency of determining described compressor according to described corresponding relation;
After determining the frequency of described compressor according to described air-conditioning fan-out capability, described method also comprises:
Store described frequency;
After described air-conditioner restarts, be chosen under the described frequency of storage and move.
8. the control device of an air-conditioner is characterized in that, comprising:
Acquisition module is used for obtaining indoor temperature and/or humidity, outdoor temperature and/or humidity and customer parameter;
The first processing module is used for calculating initial thermic load or initial refrigeration duty according to described indoor temperature and/or humidity, described outdoor temperature and/or humidity and described customer parameter;
The second processing module is used for calculating the air-conditioning fan-out capability according to described initial thermic load or described initial refrigeration duty and default cooling or programming rate;
The 3rd processing module is for the frequency of determining described compressor according to described air-conditioning fan-out capability.
9. control device according to claim 8 is characterized in that, described control device also comprises:
Memory module is used for storing described frequency;
Select module, be used for after described air-conditioner restarts, be chosen under the described frequency of storage and move.
10. an air-conditioner is characterized in that, comprises the control device of claim 8 or 9 described air-conditioners.
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