CN109405217A - Control method and multi-online air-conditioning system when a kind of multi-gang air-conditioner just operation - Google Patents
Control method and multi-online air-conditioning system when a kind of multi-gang air-conditioner just operation Download PDFInfo
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- CN109405217A CN109405217A CN201811279183.XA CN201811279183A CN109405217A CN 109405217 A CN109405217 A CN 109405217A CN 201811279183 A CN201811279183 A CN 201811279183A CN 109405217 A CN109405217 A CN 109405217A
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- conditioning system
- interior machine
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
Abstract
Control method and multi-online air-conditioning system when just running the present invention provides a kind of multi-gang air-conditioner, are related to air-conditioning technical field, and the control method when multi-gang air-conditioner is just run includes: to obtain multi-online air-conditioning system open command；The indoor unit quantity to be switched on for obtaining the multi-online air-conditioning system calculates interior machine ability need according to the indoor unit quantity to be switched on；According to the interior machine ability need, the interior machine electric expansion valve initial value and compressor frequency initial value of the multi-online air-conditioning system are determined.Control method when just operation provided by the invention, after multi-online air-conditioning system unlatching, the initial opening value of the interior machine electric expansion valve of multi-online air-conditioning system and the initial frequency value of compressor are determined according to the interior machine ability need of multi-online air-conditioning system, so that the pressure, temperature of refrigerant match with interior machine ability need in multi-online air-conditioning system, be conducive to going on smoothly for multi-online air-conditioning system just operation.
Description
Technical field
Control method and more the present invention relates to air conditioner technical field, in particular to when a kind of multi-gang air-conditioner is just run
Online air-conditioning system.
Background technique
Multi-online air-conditioning system can be by an outdoor unit collocation different model, more indoor units of different number, existing
In some control logics, for being all with a series of units, the initial opening of electric expansion valve and the initial value of compressor frequency
Fixed；Using such control logic, in actual motion, if the indoor unit negligible amounts or more opened, will lead to more
The original frequency of the interior machine ability need of online air-conditioning system and the initial opening of electric expansion valve and compressor mismatch and
The operation for influencing multi-online air-conditioning system seriously affects the experience of user's effect.
Summary of the invention
In view of this, the present invention is directed to propose a kind of control method when just operation, to solve current multi-gang air-conditioner system
In the course of work of uniting not due to the original frequency of the indoor unit quantity of unlatching and the initial opening of electric expansion valve and compressor
The problem of matching and influencing multi-online air-conditioning system operation.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of control method when just operation, comprising:
Obtain multi-online air-conditioning system open command；
The indoor unit quantity to be switched on for obtaining the multi-online air-conditioning system is calculated according to the indoor unit quantity to be switched on
Interior machine ability need；
According to the interior machine ability need, the interior machine electric expansion valve initial opening value of the multi-online air-conditioning system is determined
With compressor frequency initial value.
Further, according to the interior machine ability need, the interior machine electric expansion valve of the multi-online air-conditioning system is determined
Initial opening value includes: with the compressor frequency initial value
Judge whether the interior machine ability need X of the multi-online air-conditioning system is equal to initial ability demand；
If the interior machine ability need of the multi-online air-conditioning system is equal to the initial ability demand, the interior electromechanics is set
The initial opening value of sub- expansion valve is A0, the compressor frequency initial value is set as B0；
If the interior function power unequal requirement of the multi-online air-conditioning system, in the initial ability demand, the multi-connected machine is empty
Adjusting system carries out differentiation processing according to the interior machine ability need.
Further, whether the interior machine ability need X for judging the multi-online air-conditioning system is equal to initial ability and needs
It asks and includes:
Judge whether the interior machine ability need of the multi-online air-conditioning system meets: 1.5HP≤X < 4HP.
Further, the multi-online air-conditioning system progress differentiation, which is handled, includes:
Judge whether the interior machine ability need X of the multi-online air-conditioning system is less than the initial ability demand；
If the interior machine ability need X of the multi-online air-conditioning system is less than the initial ability demand, the interior machine is set
The initial value of electric expansion valve is A1, the compressor frequency initial value is set as B1；Wherein A1> A0, B1< B0；
If the interior machine ability need X of the multi-online air-conditioning system is greater than the initial ability demand, the interior machine is set
The initial value of electric expansion valve is A2, the compressor frequency initial value is set as B2；Wherein A2< A0, B2> B0。
Further, whether the interior machine ability need X for judging the multi-online air-conditioning system is less than the initial energy
Power demand includes:
Judge whether the interior machine ability need of the multi-online air-conditioning system meets: 0 < X < 1.5HP.
Further, it includes: X that the interior machine ability need X of the multi-online air-conditioning system, which is greater than the initial ability demand,
≥4HP。
Compared with the existing technology, control method when multi-gang air-conditioner of the present invention is just run has the advantage that
(1) control method when multi-gang air-conditioner of the present invention is just run, after multi-online air-conditioning system unlatching, root
The initial opening value of the interior machine electric expansion valve of multi-online air-conditioning system is determined according to the interior machine ability need of multi-online air-conditioning system
And the initial frequency value of compressor, so that the pressure, temperature of refrigerant and interior machine ability need in multi-online air-conditioning system
Match, is conducive to going on smoothly for multi-online air-conditioning system just operation.
(2) control method when multi-gang air-conditioner of the present invention is just run is obtaining in multi-online air-conditioning system
After machine ability need, the interior machine ability need is compared first with initial ability demand, judges that the interior machine ability need is
It is no to be equal to initial ability demand, if being equal to initial ability demand, the initial opening of interior machine electric expansion valve is set as silent
Recognize value A0, the original frequency of compressor is set as default value B0；If interior function power unequal requirement in initial ability demand,
Multi-online air-conditioning system further carries out differentiation processing according to interior machine ability need, so that interior machine electric expansion valve is first
The interior machine ability need of the original frequency and multi-online air-conditioning system of beginning aperture and compressor matches, so that refrigerant
Flow matches with interior machine ability need, in order to avoid influence the operation of multi-online air-conditioning system.
(3) control method when multi-gang air-conditioner of the present invention is just run is determining in multi-online air-conditioning system
Function power unequal requirement carries out differentiation processing after initial ability demand, according to interior machine ability need, if interior function power needs
It asks and is less than initial ability demand, then tune up the initial opening of interior machine electric expansion valve, the frequency initial value of compressor is turned down, is made
The cold medium flux obtained in evaporator is larger, and the pressure difference of refrigerant reduces, and the evaporation capacity of refrigerant in evaporator is reduced, to avoid multi-joint
Air conditioner system causes frosting due to the temperature of evaporator reduces rapidly when running refrigeration mode；On the contrary, if interior function power
Demand is greater than initial ability demand, then turns the initial opening of interior machine electric expansion valve down, and the frequency initial value of compressor tunes up,
To be easy to establish the height pressure difference of refrigerant, guarantee circulating for refrigerant, so that multi-online air-conditioning system is set up faster
New system balancing.
Another object of the present invention is to propose a kind of multi-online air-conditioning system, to solve current multi-online air-conditioning system work
During work due to the indoor unit quantity of unlatching and electric expansion valve initial opening and compressor original frequency mismatch and
The problem of leading to evaporimeter frosting.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of multi-online air-conditioning system, the multi-online air-conditioning system include outdoor unit, at least an indoor unit and control
Module, in which:
The outdoor unit includes compressor, and the compressor is for compressing and driving cold in the multi-online air-conditioning system
Matchmaker；
The indoor unit includes interior machine electric expansion valve, and the interior machine electric expansion valve is for controlling in the indoor unit
Cold medium flux；The interior machine electric expansion valve is connected with the compressor by pipeline；
The control module is used to obtain the interior machine ability need of the multi-online air-conditioning system, and according to the multi-connected machine
The interior machine ability need of air-conditioning system determines the interior machine electric expansion valve initial opening value and the compressor frequency initial value；
The control module and the interior machine electric expansion valve communicate to connect；The control module and the compressor communicate to connect.
Further, the control module determines the interior machine according to the interior machine ability need of the multi-online air-conditioning system
Electric expansion valve initial opening value includes: with the compressor frequency initial value
Judge whether the interior machine ability need X of the multi-online air-conditioning system is equal to initial ability demand；
If the interior machine ability need of the multi-online air-conditioning system is equal to the initial ability demand, the interior electromechanics is set
The initial opening value of sub- expansion valve is A0, the compressor frequency initial value is set as B0；
If the interior function power unequal requirement of the multi-online air-conditioning system, in the initial ability demand, the multi-connected machine is empty
Adjusting system carries out differentiation processing.
Further, whether the interior machine ability need X for judging the multi-online air-conditioning system is equal to initial ability and needs
It asks and includes:
Judge whether the interior machine ability need of the multi-online air-conditioning system meets: 1.5HP≤X < 4HP.
Further, the multi-online air-conditioning system progress differentiation, which is handled, includes:
Judge whether the interior machine ability need X of the multi-online air-conditioning system is less than the initial ability demand；
If the interior machine ability need X of the multi-online air-conditioning system is less than the initial ability demand, the interior machine is set
The initial opening value of electric expansion valve is A1, the compressor frequency initial value is set as B1；Wherein A1> A0, B1< B0；
If the interior machine ability need X of the multi-online air-conditioning system is greater than the initial ability demand, the interior machine is set
The initial opening value of electric expansion valve is A2, the compressor frequency initial value is set as B2；Wherein A2< A0, B2> B0。
The control method when multi-online air-conditioning system and above-mentioned multi-gang air-conditioner are just run institute compared with the existing technology
Have the advantage that identical, details are not described herein.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
The flow chart of control method when Fig. 1 is first operation described in the embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment 1
Multi-online air-conditioning system is in each run, since the indoor unit quantity of unlatching is different, each multi-gang air-conditioner system
Interior machine ability need when system is opened is also different；However current multi-online air-conditioning system, for the first of a series of unit
Beginning operating parameter, the i.e. initial opening of electric expansion valve and the original frequency of compressor are set as fixed value, lead to multi-connected machine
Air-conditioning system is in first operation, if the negligible amounts that indoor unit is opened, in cooling mode, refrigerant pass through interior machine electronic expansion
After valve, pressure is reduced rapidly, and causes the temperature of refrigerant in evaporator too low, and then leads to the room opened in multi-online air-conditioning system
The evaporator temperature of interior machine reduces rapidly, evaporimeter frosting, influences the refrigeration effect of multi-online air-conditioning system；If indoor unit is opened
When the quantity opened is more, refrigerant is after electric expansion valve, and pressure decline is relatively small, so that multi-online air-conditioning system reaches flat
Weigh pressure time it is longer, therefore will lead to multi-online air-conditioning system reach stable state time it is longer.To solve this problem,
The present invention provides control method when one kind is just run, shown in Figure 1, this method comprises:
S1: multi-online air-conditioning system open command is obtained；
S2: obtaining the indoor unit quantity to be switched on of multi-online air-conditioning system, calculates interior machine according to indoor unit quantity to be switched on
Ability need；
S3: according to interior machine ability need, the interior machine electric expansion valve initial opening value and pressure of multi-online air-conditioning system are determined
Contracting unit frequency initial value.
Since the interior machine electric expansion valve in multi-online air-conditioning system is for throttling to refrigerant, interior machine electric expansion valve
Pressure difference before and after interior machine electric expansion valve of opening size and refrigerant it is closely related, the aperture of interior machine electric expansion valve is bigger,
The cold medium flux for flowing through electric expansion valve is bigger, and refrigerant pressure decline after interior machine electric expansion valve is smaller, at a temperature of refrigerant
It drops also smaller；On the contrary, the aperture of interior machine electric expansion valve is smaller, the cold medium flux for flowing through electric expansion valve is smaller, in refrigerant warp
Pressure decline is bigger after machine electric expansion valve, and the temperature decline of refrigerant is also bigger, therefore, in operation at the beginning of multi-online air-conditioning system
When, the aperture of interior machine electric expansion valve is adjusted according to interior machine ability need, can make the pressure of refrigerant in multi-online air-conditioning system
Power, temperature and interior machine ability need match, and then are conducive to the operation of multi-online air-conditioning system.
Equally, the compressor in multi-online air-conditioning system is used to carry out compressing to refrigerant and drive refrigerant, compresses
The frequency of machine is related with the pressure difference of low-pressure side in compressor high-pressure side to refrigerant, and the frequency of compressor is lower, and cold medium compressor is high
Press the pressure difference of side and low-pressure side smaller；On the contrary, the frequency of compressor is higher, the pressure difference of cold medium compressor high-pressure side and low-pressure side is got over
Greatly, therefore, when being run at the beginning of multi-online air-conditioning system, the frequency of compressor is adjusted according to interior machine ability need, can be made more
The pressure, temperature of refrigerant match with interior machine ability need in online air-conditioning system, and then are conducive to multi-online air-conditioning system
Operation.
After multi-online air-conditioning system receives open command, the number of indoor unit to be opened in multi-online air-conditioning system is detected
Amount, according to the quantity of indoor unit to be opened and the total work of the power calculation indoor unit to be opened of each indoor unit to be opened
Rate, the i.e. interior machine ability need of multi-online air-conditioning system；Further according to the interior function power of the multi-online air-conditioning system calculated
Demand determines the interior machine electric expansion valve initial opening value and compressor frequency initial value of the multi-online air-conditioning system, in turn
So that the pressure, temperature of refrigerant match with interior machine ability need in multi-online air-conditioning system, and then be conducive to multi-gang air-conditioner
What system was just run goes on smoothly.
Control method when just operation provided in this embodiment, after multi-online air-conditioning system unlatching, according to multi-connected machine sky
The interior machine ability need of adjusting system determines the initial opening value and compressor of the interior machine electric expansion valve of multi-online air-conditioning system
Initial frequency value so that the pressure, temperature of refrigerant match with interior machine ability need in multi-online air-conditioning system, favorably
It is gone on smoothly in what multi-online air-conditioning system was just run.
Embodiment 2
On the basis of embodiment 1, in the present embodiment multi-online air-conditioning system interior machine ability need, determine multi-connected machine sky
The interior machine electric expansion valve initial opening value of adjusting system and the compressor frequency initial value of multi-online air-conditioning system include:
S31: judging whether the interior machine ability need X of multi-online air-conditioning system is equal to initial ability demand, if multi-connected machine is empty
The interior machine ability need X of adjusting system is equal to initial ability demand, enters step S32, otherwise enters step S33；
S32: the initial opening value of machine electric expansion valve is A in setting0, compressor frequency initial value is set as B0；
S33: multi-online air-conditioning system carries out differentiation processing according to interior machine ability need.
When initial ability demand in the present embodiment refers to the indoor unit moderate number of the booting of multi-online air-conditioning system
Interior machine ability need；In use based on multi-online air-conditioning system, the too little or too much probability of the quantity of indoor unit is opened
Smaller, therefore, interior machine ability need when by the moderate number of the indoor unit of unlatching is set to initial ability demand, so that more
The adjusting number to interior machine electric expansion valve and compressor is reduced in online air-conditioning system use process.
After the interior machine ability need for obtaining multi-online air-conditioning system, by acquired interior machine ability need X and initial ability
Demand is compared, and judges whether interior machine ability need X is equal to initial ability demand, if it is decided that interior machine ability need X is equal to
Initial ability demand then sets the initial opening value of interior machine electric expansion valve as A0, compressor frequency initial value is set as B0；Its
Middle A0And B0It is default setting value when multi-online air-conditioning system is opened, is adapted with initial interior machine ability need；A0And
B0Specific value depending on the concrete model of multi-online air-conditioning system；The preferred A of the present embodiment0Value range be 100≤A0
≤ 200, B0Value range be 20 < B0≤60；It is i.e. when interior machine ability need is equal to initial ability demand, interior electromechanical son is swollen
The initial opening value of swollen valve is set as A0, compressor frequency initial value is set as B0, so that the initial launch of multi-online air-conditioning system
Parameter matches with interior machine ability need, so that the flow of refrigerant, pressure, temperature match with interior machine ability need, into
And going on smoothly when operation at the beginning of guaranteeing multi-online air-conditioning system.
When determine multi-online air-conditioning system interior function power unequal requirement when initial ability demand, multi-online air-conditioning system
Differentiation processing is carried out, i.e., the multi-online air-conditioning system is according to specific interior machine ability need to the initial of interior machine electric expansion valve
The original frequency of aperture and compressor is set, so that the initial frequency of the initial opening of interior machine electric expansion valve and compressor
The interior machine ability need of rate and multi-online air-conditioning system matches, so that the flow of refrigerant and interior machine ability need phase
Match, in order to avoid influence the operation of multi-online air-conditioning system.
It opens quantity according to indoor unit common in multi-online air-conditioning system to calculate, the initial ability demand in the present embodiment
X0For 1.5HP≤X0Therefore < 4HP judges whether the interior machine ability need X of multi-online air-conditioning system is equal to initial ability demand
It include: to judge whether the interior machine ability need X of multi-online air-conditioning system meets: 1.5HP≤X < 4HP.
Control method when just operation provided in this embodiment, in the interior machine ability need for obtaining multi-online air-conditioning system
Afterwards, the interior machine ability need is compared first with initial ability demand, judges whether the interior machine ability need is equal to initially
The initial opening of interior machine electric expansion valve is set as default value A if being equal to initial ability demand by ability need0, will press
The original frequency of contracting machine is set as default value B0；If interior function power unequal requirement is in initial ability demand, multi-gang air-conditioner
System further according to interior machine ability need carry out differentiation processing so that the initial opening of interior machine electric expansion valve and
The interior machine ability need of the original frequency and multi-online air-conditioning system of compressor matches, so that the flow of refrigerant and interior machine
Ability need matches, in order to avoid influence the operation of multi-online air-conditioning system.
Embodiment 3
On the basis of embodiment 2, multi-online air-conditioning system carries out differentiation according to interior machine ability need in the present embodiment
Processing includes:
S331: judging whether the interior machine ability need X of multi-online air-conditioning system is less than initial ability demand, if multi-connected machine is empty
The interior machine ability need X of adjusting system is less than initial ability demand, enters step S332, otherwise enters step S333；
S332: the initial opening value of machine electric expansion valve is A in setting1, compressor frequency initial value is set as B1；Wherein
A1> A0, B1< B0；
S333: the initial opening value of machine electric expansion valve is A in setting2, compressor frequency initial value is set as B2；Wherein
A2< A0, B2> B0。
In the interior function power unequal requirement for determining multi-online air-conditioning system after initial ability demand, multi-online air-conditioning system
It needs to carry out differentiation processing according to interior machine ability need, so that the initial operational parameter and multi-connected machine of multi-online air-conditioning system
The interior machine ability need of air-conditioning system matches.
Specifically, being opened if the indoor unit negligible amounts opened, the interior machine ability need of multi-online air-conditioning system is smaller
Indoor unit total capacity be much smaller than multi-online air-conditioning system total capacity；Since the aperture of interior machine electric expansion valve is bigger, stream
Cold medium flux through electric expansion valve is bigger, and refrigerant pressure decline after interior machine electric expansion valve is smaller；And the frequency of compressor
Lower, the pressure difference of cold medium compressor high-pressure side and low-pressure side is smaller in multi-online air-conditioning system, therefore, to avoid the interior opened
Machine quantity is very few and the problem of in refrigeration mode, evaporator temperature reduces rapidly and leads to evaporimeter frosting, can will interior electromechanical son
The initial opening of expansion valve tunes up, and the frequency initial value of compressor, the i.e. original frequency of compressor is turned down, so that refrigerant is by electricity
Pressure difference is smaller after sub- expansion valve, and the pressure difference of refrigerant reduces, and refrigerant temperature reduces smaller in evaporator, to avoid the temperature of evaporator
Degree reduces rapidly and causes frosting；On the contrary, interior machine ability need is larger, the room of unlatching if the indoor unit quantity opened is more
The total capacity of interior machine and the total capacity of multi-online air-conditioning system are not much different, then can be by the initial opening tune of interior machine electric expansion valve
Small, the frequency initial value of compressor tunes up, to be easy to establish the height pressure difference of refrigerant, is conducive to refrigerant and evaporates rapidly, and protect
Card refrigerant circulates, so that multi-online air-conditioning system sets up new system balancing faster.
The interior machine ability need of multi-online air-conditioning system is compared with initial ability demand first, judges interior function power
Whether demand is less than initial ability demand；Since the setting of initial ability demand is a value range, judge that interior function power needs
Seeking Truth is no as to judge whether interior machine ability need is less than the minimum value of initial ability demand less than initial ability demand, therefore,
Judge in the present embodiment the interior machine ability need X of multi-online air-conditioning system whether be less than initial ability demand include: judge it is multi-joint
Whether the ability need of air conditioner system meets: 0 < X < 1.5HP.
If it is determined that the interior machine ability need of multi-online air-conditioning system is less than initial ability demand, then interior machine electronic expansion is set
The initial opening value of valve is A1, the compressor frequency initial value is set as B1；Wherein A1> A0, B1< B0；Due to A0Value
Range is 100≤A0≤ 200, B0Value range be 20 < B0≤ 60, therefore A1> A0As A1> 200, B1< B0As B1≤
20.I.e. when the interior machine ability need for determining multi-online air-conditioning system is less than initial ability demand, it was demonstrated that indoor unit to be switched on
Negligible amounts, the total capacity of indoor unit to be opened are much smaller than the total capacity of multi-online air-conditioning system, can be by interior machine electric expansion valve
Initial opening tune up, the frequency initial value of compressor is turned down, so that the pressure difference of refrigerant reduces, reduces the steaming of refrigerant in evaporator
Hair amount, the refrigerant pressure in evaporator is smaller, and temperature is lower, to avoid multi-online air-conditioning system steaming when running refrigeration mode
The temperature of hair device reduces rapidly and causes frosting.
Due to having determined that interior function power unequal requirement before whether machine ability need is less than initial ability demand in judging
In initial ability demand, so if machine ability need is not less than initial ability demand in judging, that is, it can determine that interior function power needs
It asks and is greater than initial ability demand；Since the setting of initial ability demand is a value range, determine that interior machine ability need is greater than
Initial ability demand is therefore the maximum value that machine ability need is greater than initial ability demand in determining determines in the present embodiment
It includes: to determine the interior function of multi-online air-conditioning system that the interior machine ability need X of multi-online air-conditioning system, which is greater than initial ability demand,
Power need satisfaction: X >=4HP.
If it is determined that the interior machine ability need of multi-online air-conditioning system is not less than initial ability demand, for the present embodiment
Speech, that is, interior machine ability need are greater than initial ability demand, then set the initial opening value of interior machine electric expansion valve as A2If
Determining compressor frequency initial value is B2；Wherein A2< A0, B2> B0.Due to A0Value range be 100≤A0≤ 200, B0Value
Range is 20 < B0≤ 60, therefore A2< A0As A2< 100, B2> B0As B2> 60.
When machine ability need is greater than initial ability demand in determining, it was demonstrated that indoor unit quantity to be opened is more, wait open
The total capacity of the indoor unit opened and the total capacity of multi-online air-conditioning system are not much different, then can be by the initial of interior machine electric expansion valve
Aperture is turned down, and the frequency initial value of compressor tunes up, to be easy to establish the height pressure difference of refrigerant, is conducive to refrigerant and is steamed rapidly
Hair, guarantees circulating for refrigerant, so that multi-online air-conditioning system sets up system balancing faster.
Control method when just operation provided in this embodiment is determining the interior machine ability need of multi-online air-conditioning system not
After initial ability demand, differentiation processing is carried out according to interior machine ability need, if interior machine ability need is less than initial energy
Power demand then tunes up the initial opening of interior machine electric expansion valve, and the frequency initial value of compressor is turned down, so that in evaporator
Cold medium flux is larger, and the pressure difference of refrigerant reduces, and the evaporation capacity of refrigerant in evaporator is reduced, so that multi-online air-conditioning system be avoided to exist
Cause frosting due to the temperature of evaporator reduces rapidly when running refrigeration mode；On the contrary, if interior machine ability need is greater than initially
Ability need then turns the initial opening of interior machine electric expansion valve down, and the frequency initial value of compressor tunes up, to be easy to establish
The height pressure difference of refrigerant, guarantees circulating for refrigerant, so that multi-online air-conditioning system sets up new system balancing faster.
Embodiment 4
The present embodiment provides a kind of multi-online air-conditioning system, which includes outdoor unit, at least a room
Interior machine and control module, in which:
Outdoor unit includes compressor, and the compressor is for compressing and driving the refrigerant in multi-online air-conditioning system；
Indoor unit includes interior machine electric expansion valve, which is used to control the cold medium flux in indoor unit；
Interior machine electric expansion valve is connected with compressor by pipeline；
Control module is used to obtain the interior machine ability need of multi-online air-conditioning system, and according in multi-online air-conditioning system
Machine ability need determines interior machine electric expansion valve initial opening value and compressor frequency initial value；Control module and interior electromechanical son are swollen
Swollen valve communication connection；Control module and compressor communicate to connect.
When multi-online air-conditioning system is opened, control module obtains indoor unit quantity to be switched on, according to interior to be opened
The general power of the power calculation indoor unit to be opened of the quantity of machine and each indoor unit to be opened, i.e. multi-online air-conditioning system
Interior machine ability need；The multi-gang air-conditioner is determined further according to the interior machine ability need of the multi-online air-conditioning system calculated
The interior machine electric expansion valve initial opening value and compressor frequency initial value of system.
Multi-online air-conditioning system provided in this embodiment, after multi-online air-conditioning system unlatching, according to multi-gang air-conditioner system
System interior machine ability need determine multi-online air-conditioning system interior machine electric expansion valve initial opening value and compressor just
Beginning frequency values are conducive to more so that the pressure, temperature of refrigerant match with interior machine ability need in multi-online air-conditioning system
What online air-conditioning system was just run goes on smoothly.
Embodiment 5
On the basis of embodiment 4, control module is according to the interior machine ability need of multi-online air-conditioning system in the present embodiment
Machine electric expansion valve initial value includes: with compressor frequency initial value in determining
S31: judging whether the interior machine ability need X of multi-online air-conditioning system is equal to initial ability demand, if multi-connected machine is empty
The interior machine ability need X of adjusting system is equal to initial ability demand, enters step S32, otherwise enters step S33；
S32: the initial opening value of machine electric expansion valve is A in setting0, compressor frequency initial value is set as B0；
S33: multi-online air-conditioning system carries out differentiation processing according to interior machine ability need.
When determine multi-online air-conditioning system interior function power unequal requirement when initial ability demand, multi-online air-conditioning system
Differentiation processing is carried out, i.e., the multi-online air-conditioning system is according to specific interior machine ability need to the initial of interior machine electric expansion valve
The original frequency of aperture and compressor is set, so that the initial frequency of the initial opening of interior machine electric expansion valve and compressor
The interior machine ability need of rate and multi-online air-conditioning system matches, so that the flow of refrigerant and interior machine ability need phase
Match, in order to avoid influence the operation of multi-online air-conditioning system.
Multi-online air-conditioning system provided in this embodiment, it is first after the interior machine ability need for obtaining multi-online air-conditioning system
The interior machine ability need is compared with initial ability demand first, judges whether the interior machine ability need is equal to initial ability and needs
It asks, if being equal to initial ability demand, the initial opening of interior machine electric expansion valve is set as default value A0, by compressor
Original frequency is set as default value B0；If interior function power unequal requirement in initial ability demand, multi-online air-conditioning system into
One step carries out differentiation processing according to interior machine ability need, so that the initial opening and compressor of interior machine electric expansion valve
Original frequency and the interior machine ability need of multi-online air-conditioning system match so that the flow of refrigerant and interior function power need
It asks and matches, in order to avoid influence the operation of multi-online air-conditioning system.
Embodiment 6
On the basis of embodiment 5, multi-online air-conditioning system carries out differentiation according to interior machine ability need in the present embodiment
Processing includes:
S331: judging whether the interior machine ability need X of multi-online air-conditioning system is less than initial ability demand, if multi-connected machine is empty
The interior machine ability need X of adjusting system is less than initial ability demand, enters step S332, otherwise enters step S333；
S332: the initial opening value of machine electric expansion valve is A in setting1, compressor frequency initial value is set as B1；Wherein
A1> A0, B1< B0；
S333: the initial opening value of machine electric expansion valve is A in setting2, compressor frequency initial value is set as B2.Wherein
A2< A0, B2> B0。
In the interior function power unequal requirement for determining multi-online air-conditioning system after initial ability demand, multi-online air-conditioning system
It needs to carry out differentiation processing according to interior machine ability need, so that the initial operational parameter and multi-connected machine of multi-online air-conditioning system
The interior machine ability need of air-conditioning system matches.
The interior machine ability need of multi-online air-conditioning system is compared with initial ability demand first, judges interior function power
Whether demand is less than initial ability demand；If it is determined that the interior machine ability need of multi-online air-conditioning system is less than initial ability demand,
The initial opening value of machine electric expansion valve is A in then setting1, the compressor frequency initial value is set as B1；Wherein A1> A0, B1
< B0；Due to A0Value range be 100≤A0≤ 200, B0Value range be 20 < B0≤ 60, therefore A1> A0As A1>
200, B1< B0As B1≤20.I.e. when the interior machine ability need for determining multi-online air-conditioning system is less than initial ability demand, card
Bright indoor unit negligible amounts to be switched on, the total capacity of indoor unit to be opened are much smaller than the total capacity of multi-online air-conditioning system, can
The initial opening of interior machine electric expansion valve is tuned up, the frequency initial value of compressor is turned down, so that the pressure difference of refrigerant reduces, is reduced
The evaporation capacity of refrigerant in evaporator, the refrigerant pressure in evaporator is smaller, and temperature is lower, so that multi-online air-conditioning system be avoided to exist
The temperature of evaporator reduces rapidly and causes frosting when running refrigeration mode.
Due to having determined that interior function power unequal requirement before whether machine ability need is less than initial ability demand in judging
In initial ability demand, so if machine ability need is not less than initial ability demand in judging, that is, it can determine that interior function power needs
It asks and is greater than initial ability demand；Since the setting of initial ability demand is a value range, determine that interior machine ability need is greater than
Initial ability demand is therefore the maximum value that machine ability need is greater than initial ability demand in determining determines in the present embodiment
It includes: to determine the interior function of multi-online air-conditioning system that the interior machine ability need X of multi-online air-conditioning system, which is greater than initial ability demand,
Power need satisfaction: X >=4HP.
If it is determined that the interior machine ability need of multi-online air-conditioning system is not less than initial ability demand, for the present embodiment
Speech, that is, interior machine ability need are greater than initial ability demand, then set the initial opening value of interior machine electric expansion valve as A2If
Determining compressor frequency initial value is B2；Wherein A2< A0, B2> B0.Due to A0Value range be 100≤A0≤ 200, B0Value
Range is 20 < B0≤ 60, therefore A2< A0As A2< 100, B2> B0As B2> 60.
When machine ability need is greater than initial ability demand in determining, it was demonstrated that indoor unit quantity to be opened is more, wait open
The total capacity of the indoor unit opened and the total capacity of multi-online air-conditioning system are not much different, then can be by the initial of interior machine electric expansion valve
Aperture is turned down, and the frequency initial value of compressor tunes up, to be easy to establish the height pressure difference of refrigerant, is conducive to refrigerant and is steamed rapidly
Hair, guarantees circulating for refrigerant, so that multi-online air-conditioning system sets up system balancing faster.
Multi-online air-conditioning system provided in this embodiment, determine multi-online air-conditioning system interior function power unequal requirement in
After initial ability demand, differentiation processing is carried out according to interior machine ability need, if interior machine ability need is needed less than initial ability
It asks, then tunes up the initial opening of interior machine electric expansion valve, the frequency initial value of compressor is turned down, so that the refrigerant in evaporator
Flow is larger, and the pressure difference of refrigerant reduces, and the evaporation capacity of refrigerant in evaporator is reduced, so that multi-online air-conditioning system be avoided to run
Cause frosting due to the temperature of evaporator reduces rapidly when refrigeration mode；On the contrary, if interior machine ability need is greater than initial ability
Demand then turns the initial opening of interior machine electric expansion valve down, and the frequency initial value of compressor tunes up, to be easy to establish refrigerant
Height pressure difference, guarantee circulating for refrigerant, so that multi-online air-conditioning system sets up new system balancing faster.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
- Control method when 1. a kind of multi-gang air-conditioner is just run characterized by comprisingObtain multi-online air-conditioning system open command；The indoor unit quantity to be switched on for obtaining the multi-online air-conditioning system calculates interior machine according to the indoor unit quantity to be switched on Ability need；According to the interior machine ability need, the interior machine electric expansion valve initial opening value and pressure of the multi-online air-conditioning system are determined Contracting unit frequency initial value.
- Control method when 2. multi-gang air-conditioner according to claim 1 is just run, which is characterized in that according to the interior machine Ability need, determine the multi-online air-conditioning system interior machine electric expansion valve initial opening value and the multi-online air-conditioning system Compressor frequency initial value include:Judge whether the interior machine ability need X of the multi-online air-conditioning system is equal to initial ability demand；If the interior machine ability need X of the multi-online air-conditioning system is equal to the initial ability demand, the interior electromechanical son is set The initial opening value of expansion valve is A0, the compressor frequency initial value is set as B0；If the interior function power unequal requirement of the multi-online air-conditioning system is in the initial ability demand, the multi-gang air-conditioner system System carries out differentiation processing according to the interior machine ability need.
- Control method when 3. multi-online air-conditioning system according to claim 2 is just run, which is characterized in that the judgement Whether the interior machine ability need X of the multi-online air-conditioning system, which is equal to initial ability demand, includes:Judge whether the interior machine ability need of the multi-online air-conditioning system meets: 1.5HP≤X < 4HP.
- Control method when 4. multi-gang air-conditioner according to claim 2 is just run, which is characterized in that the multi-connected machine is empty Adjusting system carries out differentiation processingJudge whether the interior machine ability need X of the multi-online air-conditioning system is less than the initial ability demand；If the interior machine ability need X of the multi-online air-conditioning system is less than the initial ability demand, the interior electromechanical son is set The initial opening value of expansion valve is A1, the compressor frequency initial value is set as B1；Wherein A1> A0, B1< B0；If the interior machine ability need X of the multi-online air-conditioning system is greater than the initial ability demand, the interior electromechanical son is set The initial opening value of expansion valve is A2, the compressor frequency initial value is set as B2；Wherein A2< A0, B2> B0。
- Control method when 5. multi-gang air-conditioner according to claim 4 is just run, which is characterized in that described in the judgement Whether the interior machine ability need X of multi-online air-conditioning system, which is less than the initial ability demand, includes:Judge whether the interior machine ability need of the multi-online air-conditioning system meets: 0 < X < 1.5HP.
- Control method when 6. multi-gang air-conditioner according to claim 4 is just run, which is characterized in that the multi-connected machine is empty It includes: X >=4HP that the interior machine ability need X of adjusting system, which is greater than the initial ability demand,.
- 7. a kind of multi-online air-conditioning system, which is characterized in that the multi-online air-conditioning system includes outdoor unit, at least an interior Machine and control module, in which:The outdoor unit includes compressor, and the compressor is for compressing and driving the refrigerant in the multi-online air-conditioning system；The indoor unit includes interior machine electric expansion valve, and the interior machine electric expansion valve is used to control the refrigerant in the indoor unit Flow；The interior machine electric expansion valve is connected with the compressor by pipeline；The control module is used to obtain the interior machine ability need of the multi-online air-conditioning system, and according to the multi-gang air-conditioner The interior machine ability need of system determines the interior machine electric expansion valve initial opening value and the compressor frequency initial value；It is described Control module and the interior machine electric expansion valve communicate to connect；The control module and the compressor communicate to connect.
- 8. multi-online air-conditioning system according to claim 7, which is characterized in that the control module is according to the multi-connected machine The interior machine ability need of air-conditioning system determines the interior machine electric expansion valve initial opening value and the compressor frequency initial value Include:Judge whether the interior machine ability need X of the multi-online air-conditioning system is equal to initial ability demand；If the interior machine ability need of the multi-online air-conditioning system is equal to the initial ability demand, it is swollen to set the interior electromechanical son The initial opening value of swollen valve is A0, the compressor frequency initial value is set as B0；If the interior function power unequal requirement of the multi-online air-conditioning system is in the initial ability demand, the multi-gang air-conditioner system System carries out differentiation processing.
- 9. multi-online air-conditioning system according to claim 8, which is characterized in that the judgement multi-online air-conditioning system Interior machine ability need X whether be equal to initial ability demand and include:Judge whether the interior machine ability need of the multi-online air-conditioning system meets: 1.5HP≤X < 4HP.
- 10. multi-online air-conditioning system according to claim 8, which is characterized in that it is poor that the multi-online air-conditioning system carries out Alienation is handledJudge whether the interior machine ability need X of the multi-online air-conditioning system is less than the initial ability demand；If the interior machine ability need X of the multi-online air-conditioning system is less than the initial ability demand, the interior electromechanical son is set The initial opening value of expansion valve is A1, the compressor frequency initial value is set as B1；Wherein A1> A0, B1< B0；If the interior machine ability need X of the multi-online air-conditioning system is greater than the initial ability demand, the interior electromechanical son is set The initial opening value of expansion valve is A2, the compressor frequency initial value is set as B2；Wherein A2< A0, B2> B0。
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