CN104422072B - Control method of multi-split air conditioner and control system of multi-split air conditioner - Google Patents
Control method of multi-split air conditioner and control system of multi-split air conditioner Download PDFInfo
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- CN104422072B CN104422072B CN201310401518.1A CN201310401518A CN104422072B CN 104422072 B CN104422072 B CN 104422072B CN 201310401518 A CN201310401518 A CN 201310401518A CN 104422072 B CN104422072 B CN 104422072B
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000009897 systematic effect Effects 0.000 claims description 9
- 238000004781 supercooling Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000004378 air conditioning Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 208000011580 syndromic disease Diseases 0.000 description 3
- 238000010977 unit operation Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
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- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 230000036541 health Effects 0.000 description 1
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- 241000894007 species Species 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- 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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/005—Outdoor unit expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0314—Temperature sensors near the indoor heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a control method of a multi-split air conditioner and a control system of the multi-split air conditioner. The invention discloses a control method of a multi-split air conditioner, wherein the multi-split air conditioner comprises a fresh air indoor unit, and the control method comprises the following steps: s1, measuring the air outlet temperature of the fresh air indoor unit, the outdoor environment temperature, the system pressure of the multi-split air conditioner and the air suction and exhaust temperature of a compressor of the multi-split air conditioner as control parameters; and S2, selecting and adopting the capacity output of the multi-split air conditioner according to the system pressure or the air outlet temperature according to the capacity condition of the multi-split air conditioner and the measured outdoor environment temperature condition. By applying the technical scheme of the invention, the running state and the running condition of the multi-split air-conditioning system can be effectively judged, different adjusting modes can be effectively switched according to different parameter conditions, and the effective running of the multi-split air-conditioning system with a fresh air fan and a common indoor unit under the control of the control system can be ensured while the comfort and the reliability are considered.
Description
Technical field
The present invention relates to field of air conditioning, in particular to a kind of control method of multi-gang air-conditioner and multi-gang air-conditioner
Control system.
Background technology
For other air-conditioning systems, maximum difference is that can have multiple stage room in a system to multiple on-line system
Outer machine and multiple stage indoor set, and the indoor set form that can arrange in pairs or groups different and species.As people are to air-conditioning purity requirements
Continuous improvement, the use of fresh air formula air-conditioning also increasingly becomes a kind of trend.The characteristics of fresh air formula air-conditioning is to adopt outside
Outdoor air directly can be provided a health through processing introducing indoor for indoor environment by the design of connection return air inlet
Air ambient, its run working condition and general room machine difference larger, show that the difference of system aspects is exactly system
High-low pressure and general through-inner-machine difference are larger.One multi-online air-conditioning system is if a kind of existing general room machine has fresh air again
It is necessary to taking into account the running status of two distinct types of air-conditioner if the hybrid junction system of formula indoor set.Empty in design multi-connected machine
During adjusting system, discounting for fresh air formula air-conditioner, and simply according to the ruuning situation designed capacity output control of general room machine
System, may cause system pressure relatively low, and new blower fan low pressure is low, and leaving air temp is low, is unfavorable for the comfortableness that user uses, Er Qiexin
The too low pressure of blower fan and leaving air temp are easily caused refrigerant and exchange heat in systems situation that is insufficient and that liquid occur back；If only
Consider the control ability output of new blower fan, be as a result exactly that system pressure is higher, leaving air temp is high, and ability output is improper, causes
In common, mechanism cold effect is poor, does not reach the purpose of air conditioner refrigerating.
In prior art, there is no for this different machine collocation modes and operation with new blower fan and general room machine
Condition carries out rational control ability output to reach the multi-connected air conditioning system that comfortableness and reliability are taken into account.
Content of the invention
The present invention is intended to provide the control system of a kind of control method of multi-gang air-conditioner and multi-gang air-conditioner, existing to solve
There is the control system in technology carry out rational control for the multi-gang air-conditioner for having new blower fan and general room machine concurrently
Technical problem.
To achieve these goals, according to an aspect of the invention, there is provided a kind of control method of multi-gang air-conditioner,
Multi-gang air-conditioner includes fresh air indoor set, comprises the following steps：S1, measures the leaving air temp of fresh air indoor set, outdoor environment
The suction and discharge temperature of the compressor of temperature, the system pressure of multi-gang air-conditioner and multi-gang air-conditioner is used as control parameter；S2, according to
The capacity situation of fresh air indoor set and the ambient temperature situations for measuring select to take according to system pressure or according to air-out
The ability output of temperature control multi-gang air-conditioner.
Further, also include step：S3, if the system pressure for measuring switches to basis beyond preset scope
The ability output of system pressure control multi-gang air-conditioner.
Further, also include step：S4, if the leaving air temp of the fresh air indoor set for measuring exceeds preset target temperature
Degree scope, then switch to the ability output for controlling multi-gang air-conditioner according to leaving air temp.
Further, also include step：S5, if detecting systematic parameter in operation enters preset abnormal ranges,
The ability output that according to system pressure controls multi-gang air-conditioner is then switched to.
Further, systematic parameter is included in system pressure, the degree of superheat, degree of supercooling, low voltage value, suction and discharge temperature at least
One.
Further, also include step：S6, after stable operation Preset Time, according to control parameter revised ability
The control mode of output.
Further, select to take foundation according to the capacity situation and the outdoor environment temperature situation for measuring of fresh air indoor set
System pressure control or according to leaving air temp control multi-gang air-conditioner ability export concrete grammar be：35 DEG C of environment temperature
More than, if the capacity of the new blower fan of operation is controlled according to new blower fan leaving air temp less than or equal to the 30% of outer machine rated capacity, no
Then control according to system pressure；10 DEG C to 35 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the specified appearance of outer machine
The 50% of amount, controls according to new blower fan leaving air temp, otherwise controls according to system pressure；0 DEG C of environment temperature is to 10 DEG C, if operation
The capacity of new blower fan is controlled according to new blower fan leaving air temp less than or equal to the 40% of outer machine rated capacity, otherwise according to system pressure
Power is controlled；- 5 DEG C to 0 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 30% of outer machine rated capacity, according to new
Blower fan leaving air temp is controlled, and is otherwise controlled according to system pressure；Below -5 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than
Or 20% equal to outer machine rated capacity, control according to new blower fan leaving air temp, otherwise control according to system pressure.
According to a further aspect in the invention, there is provided a kind of control system of multi-gang air-conditioner, multi-gang air-conditioner include newly
Wind indoor set, including：Air-out temperature-sensitive bag, measures the leaving air temp of fresh air indoor set；Ambient temperature sensor, measurement multi-connected machine are empty
The outdoor environment temperature of tune；Pressure sensor, measures the system pressure of multi-gang air-conditioner；Judge module, according to multi-gang air-conditioner
Capacity situation and the outdoor environment temperature situation that measures judge that taken in selection and control according to system pressure or foundation goes out wind-warm syndrome
The ability output of degree control multi-gang air-conditioner；Control module, controls multi-connected machine with taking control system according to system pressure
The second control that first control model of the ability output of air-conditioning and the ability for controlling multi-gang air-conditioner according to leaving air temp are exported
Pattern.
Further, also include：Exhaust temperature-sensitive bag, measures the suction and discharge temperature of compressor.
Further, pressure sensor includes high pressure sensor and low pressure sensor.
Further, judge module is switched to many according to system pressure control according to the system pressure beyond presetting range
The ability output of gang air-conditioner.
Further, judge module is then cut according to the leaving air temp of the fresh air indoor set beyond preset target temperature range
Be changed to the ability output that multi-gang air-conditioner is controlled according to leaving air temp.
Further, judge module is switched to according to system pressure control according to the systematic parameter for entering preset abnormal ranges
The ability output of multi-gang air-conditioner processed.
Further, systematic parameter is included in system pressure, the degree of superheat, degree of supercooling, low voltage value, suction and discharge temperature at least
One.
Further, control module has and is exported according to control parameter revised ability after stable operation Preset Time
Control mode operational mode.
Application technical scheme, can effectively judge the running status and ruuning situation of multi-online air-conditioning system,
Different regulative modes are switched according to different parameter situations effectively, it is ensured that have the multi-connected machine of new blower fan and general room machine concurrently
Effective operation of comfortableness and reliability taken into account under control of the control system by air-conditioning.
Description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and the present invention shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the schematic diagram of the multi-gang air-conditioner control system of the present invention.
Description of reference numerals：1st, outdoor heat exchanger；2nd, general room machine；3rd, fresh air indoor set；4th, gas-liquid separator；5th, become
Frequency compressor；6th, temperature-sensitive bag is vented；7th, high pressure sensor；8th, air-out temperature-sensitive bag；9th, low pressure sensor.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combine.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
The multi-gang air-conditioner that the present invention is directed to includes outdoor heat exchanger 1, general room machine 2, fresh air indoor set 3, frequency conversion pressure
Contracting machine 5 and the gas-liquid separator 4 being connected with compressor.
The multi-gang air-conditioner control system of the present invention includes：6 He of exhaust temperature-sensitive bag being arranged on compressor outlet pipeline
High pressure sensor 7, is arranged on the air-out temperature-sensitive bag 8 of fresh air indoor set 3, the low pressure sensor 9 being also arranged in pipeline.Wherein
The leaving air temp of the measurement fresh air of air-out temperature-sensitive bag 8 indoor set 3, high pressure sensor 7 and low pressure sensor 9 measure multi-gang air-conditioner
System pressure, is vented the suction and discharge temperature that temperature-sensitive bag 6 measures compressor.Additionally, being additionally provided with ambient temperature sensor measurement ring
Border temperature.
The multi-gang air-conditioner control method of the present invention is using the common control mode of multiple on-line system and the multi-joint sky of fresh air formula
A kind of control for adjusting the ability output control mode feature of device to combine.The present invention need collection data be：1st, fresh air indoor set
Leaving air temp；2nd, environment temperature；3rd, the system pressure of multiple on-line system；4th, compressor suction and discharge temperature of new blower fan system etc.
Outer machine running state parameter.
First, the present invention according to the capacity situation of fresh air indoor set 3 and the ambient temperature situations of unit operation of hybrid junction come
Decision-making system refers to the output frequency situation of frequency-changeable compressor according to which kind of mode control system ability output, ability output.This
The system capability control mode of invention mainly includes two kinds, and one is to carry out ability output control, root according to system pressure conditions
Preset goal systems pressure according to the system pressure and primary control program of unit operation situation is compared, by reduced pressure
Situation carrys out the output of regulating system ability.Its two be the output of leaving air temp control ability mode, this mode is for depositing in system
Situation in 3 hybrid junction of general room machine 2 and fresh air indoor set.What new blower fan air-out temperature-sensitive bag 8 gathered fresh air indoor set 3 goes out wind-warm syndrome
Degree carrys out the output of regulating system ability.
Secondly, whether the multi-gang air-conditioner control system of the present invention is properly judged to current regulative mode, if
The air adjustment effect of common unit is poor, i.e. the preset judgement scope of the pressure parameter of system and program differs more feelings
Condition, then the pattern for preferentially switching to system pressure to adjust, whereas if the leaving air temp command range target of new blower fan goes out wind-warm syndrome
Degree difference is larger, then the pattern for switching to leaving air temp to control.
Finally, multiple on-line system needs the preferential reliability for ensureing system, if detecting the pressure of system in operation
Or the systematic parameter exception such as delivery temperature, need the pattern for being switched to the output of system pressure regulating power at once, or even operation
The pattern of pressure forced adjustment ability, it is ensured that the reliability of system operation.
The multi-gang air-conditioner control system judgement output of the present invention and the Main Basiss for adjusting are going out for indoor units
Air temperature and system high-low pressure, while needing coupling system other specification information summary to judge, then carry out capacity adjustment mould
The switching of formula.
The multi-gang air-conditioner control system of the present invention can participate in the ability and environment temperature of system operation according to fresh air indoor set
Degree is judged that system gathers ambient temperature data by temperature-sensitive bag, and these data start capacity situation together with indoor set
It is aggregated in control mainboard, through built-in related pre-set programs comparative analysis, selects a kind of capability control mode.
Due to including in the multiple on-line system of new blower fan and general room machine, should be in view of commonly multi-joint indoor set
Air adjustment effect, i.e. cooling and warming ability, consider new blower fan for the treatment effect of fresh air air again.This is related to two
Unit is planted for distribution and the regulation problem of system capability.Under different environmental working conditions, the heat exchange situation of each indoor set is not
With what fresh air processor particularly therein embodied just becomes apparent from.When new blower fan operating load is larger, can not meet
During leaving air temp sets requirement, if increase ability output still simply, the ability for being easily caused general room machine also increases together
Control failure, or even part refrigerant is from general room pusher side time liquid entrance system low-voltage side., whereas if negative in the start of new blower fan
In the case that lotus allows, only consider general room machine and do not consider new blower fan air-out air-treatment situation, be easily caused new blower fan
Adjustment effect is lacked of proper care, or even the situation appearance that refrigerant fought for by new blower fan and general room machine occurs, is also unfavorable for the use of system,
Capacity adjustment effect is also at de-synchronization state.For this situation, according to the environment temperature for using and new blower fan in varying environment
At a temperature of start shooting operating load situation, the present invention multi-online air-conditioning system interval division has been carried out to capacity adjustment pattern.
The program of preset judgement inside the control mainboard of the multi-online air-conditioning system unit of the application present invention, these programs are
Determined according to different unit operation situations.The present invention accounts for the ability ratio of whole system to determine to control according to new blower fan system
Mode processed,
One preferred embodiment is as follows：The multi-joint outdoor unit of one 10kw is different according to new blower fan start capacity
In the case of, to the control reasonability of unit and comfortableness experimental analysis after, it is determined that one judge interval：（See the table below）
（According to system pressure control if not meeting upper surface condition.Such as more than 35 DEG C of environment temperature, outer machine rated capacity
10KW, connect interior machine all told 10KW, new blower fan rated capacity are more than 3KW, then according to system pressure control.）
As seen from the table, the ratio of capacity and outside unit capacity of the selection of above control method based on new blower fan.
Specifically, more than 35 DEG C of environment temperature, if the rated capacity of the new blower fan of operation is less than or equal to outer machine rated capacity
30%, according to new blower fan leaving air temp control, otherwise according to the system pressure control；
10 DEG C to 35 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 50% of outer machine rated capacity, foundation
New blower fan leaving air temp control, otherwise controls according to the system pressure；
0 DEG C to 10 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 40% of outer machine rated capacity, foundation
New blower fan leaving air temp control, otherwise controls according to the system pressure；
- 5 DEG C to 0 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 30% of outer machine rated capacity, foundation
New blower fan leaving air temp control, otherwise controls according to the system pressure；
Below -5 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 20% of outer machine rated capacity, according to new
Blower fan leaving air temp is controlled, and is otherwise controlled according to the system pressure.
The foundation of control method is that new blower fan operating condition is different from commonly multi-joint indoor set, and the operating mode which runs is severe
Many, caused result is that increase drastically systematically runs burden, has shunted more cold medium flux, in some instances it may even be possible to affect system
The reliability operation situation of system.Therefore, under the running status of high temperature or ultralow temperature, the impact that new blower fan is brought to system is more
Plus prominent, discounting for ability to bear is met under different operating conditions, it is very easy to bring operation hidden danger to system.
The fresh air multiple on-line system of the application present invention can carry out ability output mode according to the system mode of actual motion
Switching select.Judge that selective power is exported according to preliminary temperature and new blower fan working capacity in fresh air multiple on-line system
After pattern, state of the system in normally running.
After stable operation for a period of time, this time is determined according to different types and control thought, fresh air multi-connected machine
System can targetedly revised ability output control mode according to running status situation.If in system pressure control ability
Under the control model of output, system judges that new blower fan leaving air temp differs larger with new blower fan target set temperature, and system can be certainly
Under the dynamic control model for being switched to the output of leaving air temp control ability.
Illustrate：When system is in 30 DEG C of environment temperature, new blower fan indoor set working capacity 6kw, off-premises station capacity exist
In the case of 10kw, according to default relative program, have selected carries out ability output control according to system high-low pressure to control mainboard
The mode of system, after one stable time has been run, mainboard control program can calculate the actual leaving air temp of fresh air machine and target
The difference of leaving air temp is set, then the target difference of this difference and control program is contrasted.Assume in such case
Under, default target difference is 10 DEG C, if the absolute value of actual leaving air temp and difference comparsion more than 10 DEG C of target difference is
System is automatically switched into and carries out ability output control according to new blower fan target leaving air temp.Conversely, can also be according to system pressure phase
Difference situation switches to the system pressure control ability way of output by the leaving air temp ability way of output.
, in order to ensure the safe and reliable of system, according to system, other important parameter selective powers are defeated for the control system of the present invention
Go out control mode.In order to reach the requirement of air-out target temperature, the flow that system refrigerant also can pass through accordingly from fresh air pusher side
Adjustment amplitude is larger, and under some operating modes and service condition, multi-joint new blower fan system there may be back liquid or discharge superheat etc.
It is unfavorable for the situation that system is run reliably and with long-term.Now multi-joint outdoor mainboard control system can according to the degree of superheat for collecting,
Some parameters such as degree of supercooling, low voltage value, compressor exhaust temperature are controlled, once there is situation of the parameter more than setting range
When, automatically switch to the regulative mode for ensureing the reliable Stress control output of system operation.
When system is run under the operational mode that new blower fan leaving air temp control ability is exported, once detect system ginseng
Number（The degree of superheat, degree of supercooling, low voltage value, compressor exhaust temperature）During the situation of exception or over range, need to switch at once
The operational mode of system pressure controlled output.These parameters include the delivery temperature of compressor, once detect the row of compressor
When temperature degree is higher, the pattern of switching control ability output at once is needed, and the higher situation of system exhaust temperature is in multi-connected machine system
As refrigerant circulation deficiency causes more than in system, if such case is processed as not in time causing exhaust protection or even jeopardizes
Compressor operating reliability, and such case is typically also higher along with high pressure while appearance, now switches to system pressure at once
When power is controlled, system can carry out the control of minimizing ability output at once according to high pressure to be caused to compress adapting to cold and detached internal circulating load deficiency
Machine cools down bad situation, is finally reached the purpose that control delivery temperature protects compressor.
As can be seen from the above description, present invention achieves following technique effect：Effectively judge multi-connected machine hybrid junction system
The running status and ruuning situation of system, timely and effectively according to the regulative mode that different control mode switchings is different, it is ensured that new
Effective operation that blower fan and general room machine comfortableness and reliability under system control are taken into account, embodies multi-connected machine control accurately,
The efficient feature of comfortable energy-conservation.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (15)
1. a kind of control method of multi-gang air-conditioner, the multi-gang air-conditioner include fresh air indoor set（3）, it is characterised in that bag
Include following steps：
S1, measures the fresh air indoor set（3）Leaving air temp, outdoor environment temperature, the system pressure of the multi-gang air-conditioner
The suction and discharge temperature of the compressor of power and the multi-gang air-conditioner is used as control parameter；
S2, the capacity situation and the outdoor environment temperature situation for measuring according to the multi-gang air-conditioner select to take according to institute
State system pressure control or the ability output of the multi-gang air-conditioner is controlled according to the leaving air temp.
2. the control method of multi-gang air-conditioner according to claim 1, it is characterised in that also include step：
S3, if the system pressure for measuring is beyond preset scope, switches to described according to system pressure control
The ability output of multi-gang air-conditioner.
3. the control method of multi-gang air-conditioner according to claim 2, it is characterised in that also include step：
S4, if the fresh air indoor set for measuring（3）Leaving air temp beyond preset target temperature range, then switch to according to
According to the ability output that the leaving air temp controls the multi-gang air-conditioner.
4. the control method of multi-gang air-conditioner according to claim 2, it is characterised in that also include step：
S5, if detecting systematic parameter in operation enters preset abnormal ranges, is switched to according to the system pressure
Control the ability output of the multi-gang air-conditioner.
5. the control method of multi-gang air-conditioner according to claim 4, it is characterised in that
The systematic parameter is included in the system pressure, the degree of superheat, degree of supercooling, low voltage value, the suction and discharge temperature at least
One.
6. the control method of multi-gang air-conditioner according to claim 2, it is characterised in that also include step：
S6, after stable operation Preset Time, according to the control mode of control parameter revised ability output.
7. the control method of multi-gang air-conditioner according to claim 1, it is characterised in that according to the fresh air indoor set
（3）Capacity situation and the outdoor environment temperature situation for measuring select to take and control or foundation according to the system pressure
The leaving air temp controls the concrete grammar of the ability output of the multi-gang air-conditioner：
More than 35 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 30% of outer machine rated capacity, according to new blower fan
Leaving air temp is controlled, and is otherwise controlled according to the system pressure；
10 DEG C to 35 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 50% of outer machine rated capacity, according to fresh air
Machine leaving air temp is controlled, and is otherwise controlled according to the system pressure；
0 DEG C to 10 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 40% of outer machine rated capacity, according to fresh air
Machine leaving air temp is controlled, and is otherwise controlled according to the system pressure；
- 5 DEG C to 0 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 30% of outer machine rated capacity, according to fresh air
Machine leaving air temp is controlled, and is otherwise controlled according to the system pressure；
Below -5 DEG C of environment temperature, if the capacity of the new blower fan of operation is less than or equal to the 20% of outer machine rated capacity, according to new blower fan
Leaving air temp is controlled, and is otherwise controlled according to the system pressure.
8. a kind of control system of multi-gang air-conditioner, the multi-gang air-conditioner include fresh air indoor set（3）, it is characterised in that bag
Include：
Air-out temperature-sensitive bag（8）, measure fresh air indoor set（3）Leaving air temp；
Ambient temperature sensor, measures the outdoor environment temperature of the multi-gang air-conditioner；
Pressure sensor, measures the system pressure of the multi-gang air-conditioner；
Judge module, the capacity situation and the outdoor environment temperature situation for measuring according to the multi-gang air-conditioner judge to select
Take the ability output for controlling according to the system pressure or the multi-gang air-conditioner being controlled according to the leaving air temp；
Control module, takes the ability according to the system pressure control multi-gang air-conditioner defeated with the control system is made
The first control model for going out and the second control model of the ability output for controlling the multi-gang air-conditioner according to the leaving air temp.
9. the control system of multi-gang air-conditioner according to claim 8, it is characterised in that also include：Exhaust temperature-sensitive bag
（6）, measure the suction and discharge temperature of compressor.
10. the control system of multi-gang air-conditioner according to claim 8, it is characterised in that the pressure sensor includes
High pressure sensor（7）And low pressure sensor（9）.
The control system of 11. multi-gang air-conditioners according to claim 8, it is characterised in that the judge module is according to super
Go out the system pressure of presetting range, switch to the ability output that the multi-gang air-conditioner is controlled according to the system pressure.
The control system of 12. multi-gang air-conditioners according to claim 8, it is characterised in that the judge module is according to super
Go out the fresh air indoor set of preset target temperature range（3）Leaving air temp, then switch to according to the leaving air temp control
The ability output of the multi-gang air-conditioner.
The control system of 13. multi-gang air-conditioners according to claim 8, it is characterised in that the judge module is according to entering
Enter the systematic parameter of preset abnormal ranges, be switched to the ability output that the multi-gang air-conditioner is controlled according to the system pressure.
The control system of 14. multi-gang air-conditioners according to claim 13, it is characterised in that the systematic parameter includes institute
State at least one in system pressure, the degree of superheat, degree of supercooling, low voltage value, suction and discharge temperature.
The control system of 15. multi-gang air-conditioners according to claim 8, it is characterised in that the control module has
The operational mode of the control mode exported according to control parameter revised ability after stable operation Preset Time.
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| CN201310401518.1A CN104422072B (en) | 2013-09-05 | 2013-09-05 | Control method of multi-split air conditioner and control system of multi-split air conditioner |
| PCT/CN2014/082750 WO2015032244A1 (en) | 2013-09-05 | 2014-07-22 | Method for controlling multi-split air conditioner, and system for controlling multi-split air conditioner |
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| CN201310401518.1A CN104422072B (en) | 2013-09-05 | 2013-09-05 | Control method of multi-split air conditioner and control system of multi-split air conditioner |
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| CN105605753B (en) * | 2016-01-26 | 2018-03-06 | 上海交通大学 | Fresh air air-supply temperature control system based on multi-connected machine and new blower fan composite air conditioner system |
| CN105757893B (en) * | 2016-03-23 | 2019-01-18 | 广东美的暖通设备有限公司 | The heat exchange control of multi-line system and its outdoor heat exchanger |
| CN106440042A (en) * | 2016-10-19 | 2017-02-22 | 深圳沃海森科技有限公司 | Intelligent constant temperature, constant humidity, constant cleanness and constant oxygen air conditioning system for building |
| CN106996596B (en) * | 2017-04-18 | 2023-09-19 | 珠海格力电器股份有限公司 | Air conditioning system and waste heat recovery method thereof |
| CN107655166B (en) * | 2017-09-18 | 2020-05-22 | 广东美的暖通设备有限公司 | Control method and system of multi-connected air conditioner and computer readable storage medium |
| ES2932195T3 (en) | 2017-09-18 | 2023-01-16 | Gd Midea Heating & Ventilating Equipment Co Ltd | Control method of a multi-split air conditioner, a multi-split air conditioning system and a computer-readable storage medium |
| CN107860103B (en) * | 2017-10-27 | 2020-04-03 | 广东美的暖通设备有限公司 | Control method and device of multi-split system and system with control device |
| CN108386974B (en) * | 2018-01-29 | 2021-11-02 | 青岛海尔空调电子有限公司 | Air-cooled magnetic suspension air conditioning unit and control method thereof |
| CN108469096A (en) * | 2018-03-21 | 2018-08-31 | 国网上海市电力公司 | A kind of switch gear room's temperature control system |
| TWI677652B (en) * | 2018-09-26 | 2019-11-21 | 財團法人工業技術研究院 | Air Conditioning System |
| CN114076391B (en) * | 2020-08-17 | 2022-11-22 | 广东美的制冷设备有限公司 | Multi-split air conditioner, control method thereof, air conditioner control device and readable storage medium |
| CN112486014B (en) * | 2020-11-24 | 2024-04-05 | 江苏兆胜空调有限公司 | Load distribution control method for refrigeration multi-split system |
| CN113028575B (en) * | 2021-04-22 | 2022-04-19 | 宁波奥克斯电气股份有限公司 | Target exhaust gas temperature correction method, target exhaust gas temperature correction device, electronic apparatus, and storage medium |
| CN113465096B (en) * | 2021-05-18 | 2022-09-09 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner and method and device for controlling operation of outdoor unit of multi-split air conditioner |
| CN114216203B (en) * | 2021-12-16 | 2022-10-25 | 珠海格力电器股份有限公司 | Self-cleaning control method of multi-split air conditioner and multi-split air conditioner |
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| WO2015032244A1 (en) | 2015-03-12 |
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