CN105953354A - Multiple-on-line system and control method thereof - Google Patents
Multiple-on-line system and control method thereof Download PDFInfo
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- CN105953354A CN105953354A CN201610264510.9A CN201610264510A CN105953354A CN 105953354 A CN105953354 A CN 105953354A CN 201610264510 A CN201610264510 A CN 201610264510A CN 105953354 A CN105953354 A CN 105953354A
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- line system
- indoor set
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Classifications
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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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
Abstract
The invention discloses a multiple-on-line system and a control method thereof. The control method of the multiple-on-line system comprises the following steps that when communication failures happen on any one of multiple indoor units, the multiple-on-line system is controlled to enter a refrigerant detection mode; the exhaust pressure of a compressor and the back pressure of the compressor are obtained, and whether refrigerant leakage happens on the multiple-on-line system or not is judged according to the exhaust pressure and the back pressure; and if refrigerant leakage does not happen on the multiple-on-line system, the multiple-on-line system is controlled to operate normally. By means of the control method, whether refrigerant leakage happens on the system or not can be automatically detected through the exhaust pressure and the back pressure of the compressor when the communication failures happen on the indoor units, and the system is controlled to operate normally when refrigerant leakage does not happen; accordingly, the effect that the indoor units without communication failures can normally operate can be ensured, and the user experience is improved; and in addition, the time for maintenance personnel to check the failures can be greatly shortened, and the maintenance efficiency of the maintenance personnel is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly to control method and a kind of multiple on-line system of a kind of multiple on-line system.
Background technology
Independently control owing to multiple on-line system has indoor set, use flexibly, take the advantage that installing space is little, thus extensively
It is applied to the middle-size and small-size region such as office, villa.
Existing installation environment generally has ten several even tens indoor sets to be arranged under an off-premises station, multiple indoor sets and room
Carry out communication by connection between outer machine, meanwhile, between multiple indoor sets and off-premises station, be also associated with trachea and liquid pipe.Many
Connecting line, connecting tube between individual indoor set and off-premises station are more, when normally using after project installation, sometimes because of room
The circuit board of interior machine breaks down or indoor set is de-energized and causes indoor set communication abnormality, when certain indoor set generation communication
Time abnormal, off-premises station, in order to ensure the safe operation of whole system, all can directly do shutdown and process, which results in great majority
The indoor set that communication failure does not occurs can together come into the picture and can not run, and has had a strong impact on Consumer's Experience.
Summary of the invention
The application is to make understanding and the research of problems with based on inventor:
In multiple on-line system, when only part indoor set generation communication failure, if the coolant in system leaks,
Multiple on-line system then should be allowed properly functioning, to ensure that other do not occur the indoor set of communication failure can be properly functioning.
In correlation technique, when indoor set generation communication failure, off-premises station processes directly doing shutdown, then uses artificial row
Mode of looking into investigates failure cause one by one, but owing to the connecting line between multiple indoor sets and off-premises station, connecting tube are more, not only
Need to put into substantial amounts of human and material resources and time, cause the waste of resource, and owing to there are not the indoor of communication failure
Machine is the most out of service, leverages Consumer's Experience.And if whether system can automatically detect coolant and leak, then may be used
With when indoor set generation communication failure and system do not occur coolant leakage, control system continues to run with, thus is possible not only to big
Improve greatly Consumer's Experience, and the quick handling failure for maintainer is also highly beneficial.
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the one of the present invention
Purpose is to propose the control method of a kind of multiple on-line system, and the method can detect automatically when indoor set generation communication failure
Whether system there is coolant leakage, and control system is properly functioning when there is coolant leakage, thus can not only ensure not
The indoor set that communication failure occurs can be properly functioning, improves Consumer's Experience, and can be substantially reduced maintainer investigation event
The time of barrier, improve the maintenance efficiency of maintainer.
Further object is that a kind of multiple on-line system of proposition.
For achieving the above object, one aspect of the present invention embodiment proposes the control method of a kind of multiple on-line system, described multi-joint
Machine system includes that multiple indoor set and off-premises station, described off-premises station include compressor, said method comprising the steps of: work as institute
When stating any one the indoor set generation communication failure in multiple indoor set, control described multiple on-line system and enter coolant detection mould
Formula；Obtain pressure at expulsion and the back pressure of described compressor of described compressor, and according to described pressure at expulsion and described time
Atmospheric pressure judges whether described multiple on-line system occurs coolant leakage；And if it is determined that there is not coolant in described multiple on-line system
Leakage, then control described multiple on-line system properly functioning.
The control method of multiple on-line system according to embodiments of the present invention, when any one indoor set in multiple indoor sets occurs
During communication failure, control multiple on-line system and enter coolant detection pattern, then obtain the pressure at expulsion of compressor and compressor
Back pressure, and judge whether multiple on-line system occurs coolant leakage according to pressure at expulsion and back pressure, if it is determined that multi-joint
There is not coolant leakage in machine system, then controls multiple on-line system properly functioning, thus can not only ensure communication failure
Indoor set can be properly functioning, improve Consumer's Experience, and can be substantially reduced maintainer investigation fault time, carry
The maintenance efficiency of high maintainer.
According to one embodiment of present invention, described described multi-connected machine system is judged according to described pressure at expulsion and described back pressure
Whether system there is coolant leakage, including: in judging Preset Time, the rate of change of described pressure at expulsion is the most default less than first becomes
Rate, and whether the rate of change of described back pressure presets rate of change less than second in judging described Preset Time；If it is described
The rate of change of pressure at expulsion presets rate of change less than described first, and the rate of change of described back pressure is preset less than described second
Rate of change, then judge that described multiple on-line system does not occurs coolant leakage.
According to one embodiment of present invention, after described multiple on-line system enters coolant detection pattern, described compressor is obtained
Current goal frequency, and control described compressor and run with described current goal frequency, and by locking, communication does not occurs
The controller operation of each indoor set of fault is not so that occurring each indoor set of communication failure to keep current operating conditions.
According to one embodiment of present invention, described current goal frequency is obtained by below equation:
F2=F1 × (S2/S1+B),
Wherein, F2 is described current goal frequency, and F1 is any one the indoor set generation communication event in the plurality of indoor set
The running frequency of described compressor before barrier, after S2 is any one the indoor set generation communication failure in the plurality of indoor set
Indoor set total capacity, S1 is the indoor set total capacity before any one the indoor set generation communication failure in the plurality of indoor set,
B is predetermined coefficient.
According to one embodiment of present invention, the control method of above-mentioned multiple on-line system, also include: if it is determined that described many
On-line system generation coolant leakage, then control described multiple on-line system out of service.
According to one embodiment of present invention, the control method of above-mentioned multiple on-line system, also include: if it is determined that described many
There is not coolant leakage in on-line system, then sends communication failure alarm；If it is determined that described multiple on-line system generation coolant
Leakage, then send the prompting of coolant fault alarm.
For achieving the above object, another aspect of the present invention embodiment proposes a kind of multiple on-line system, including: multiple indoor sets；
Off-premises station, described off-premises station includes compressor；Control module, any one in the plurality of indoor set of described control module
During individual indoor set generation communication failure, control described multiple on-line system and enter coolant detection pattern, and obtain described compressor
Pressure at expulsion and the back pressure of described compressor, and judge described multi-joint according to described pressure at expulsion and described back pressure
Whether machine system there is coolant leakage, and controls described multi-connected machine system when described multiple on-line system does not occurs coolant leakage judging
Unite properly functioning.
Multiple on-line system according to embodiments of the present invention, control module any one indoor set in multiple indoor sets occurs logical
During news fault, control multiple on-line system and enter coolant detection pattern, and obtain the pressure at expulsion of compressor and the return-air of compressor
Pressure, and judge whether multiple on-line system occurs coolant leakage according to pressure at expulsion and back pressure, and judging multi-connected machine
It is properly functioning that system does not occurs to control multiple on-line system during coolant leakage, thus can not only ensure not occur the room of communication failure
Interior machine can be properly functioning, improves Consumer's Experience, and can be substantially reduced the time of maintainer investigation fault, improves dimension
Repair the maintenance efficiency of personnel.
According to one embodiment of present invention, described control module is judging institute according to described pressure at expulsion and described back pressure
Stating multiple on-line system when whether there is coolant leakage, wherein, described control module is described pressure at expulsion in judging Preset Time
Whether rate of change presets rate of change less than first, and whether the rate of change of described back pressure is less than in judging described Preset Time
Second presets rate of change, and presets rate of change, and described return-air pressure at the rate of change of described pressure at expulsion less than described first
When the rate of change of power presets rate of change less than described second, it is judged that described multiple on-line system does not occurs coolant leakage.
According to one embodiment of present invention, after described multiple on-line system enters coolant detection pattern, described control module obtains
Take the current goal frequency of described compressor, and control described compressor and run with described current goal frequency, and by lock
The controller of fixed each indoor set that communication failure does not occurs operates so that described each indoor set that communication failure does not occurs keeps
Current operating conditions.
According to one embodiment of present invention, described current goal frequency is obtained by below equation:
F2=F1 × (S2/S1+B),
Wherein, F2 is described current goal frequency, and F1 is any one the indoor set generation communication event in the plurality of indoor set
The running frequency of described compressor before barrier, after S2 is any one the indoor set generation communication failure in the plurality of indoor set
Indoor set total capacity, S1 is the indoor set total capacity before any one the indoor set generation communication failure in the plurality of indoor set,
B is predetermined coefficient.
According to one embodiment of present invention, described control module controls when judging described multiple on-line system generation coolant leakage
Described multiple on-line system is out of service.
According to one embodiment of present invention, the control method of above-mentioned multiple on-line system, also include: alarm module, described
Alarm module is connected with described control module, described control module when judging that described multiple on-line system does not occurs coolant leakage,
Communication failure alarm is sent by described alarm module, and when judging described multiple on-line system generation coolant leakage, logical
Cross described alarm module and send the prompting of coolant fault alarm.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of multiple on-line system according to embodiments of the present invention.
Fig. 2 is the flow chart of the control method of multiple on-line system according to an embodiment of the invention.
Fig. 3 is the block diagram of multiple on-line system according to an embodiment of the invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most identical
Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
Control method and the multi-connected machine system of the multiple on-line system proposed according to embodiments of the present invention are described with reference to the accompanying drawings
System.
Fig. 1 is the flow chart of the control method of multiple on-line system according to embodiments of the present invention.In an embodiment of the present invention,
Multiple on-line system can include multiple indoor set and off-premises station, and off-premises station includes compressor.
As it is shown in figure 1, the control method of this multiple on-line system comprises the following steps:
S1, when any one indoor set generation communication failure in multiple indoor sets, controls multiple on-line system and enters coolant inspection
Survey pattern.
According to one embodiment of present invention, after multiple on-line system enters coolant detection pattern, obtain the current mesh of compressor
Mark frequency, and control compressor and run with current goal frequency, and there is not each indoor set of communication failure by locking
Controller operation so that do not occur communication failure each indoor set keep current operating conditions.
Wherein, current goal frequency can be obtained by following formula (1):
F2=F1 × (S2/S1+B) (1)
Wherein, F2 is current goal frequency, and F1 is compression before any one the indoor set generation communication failure in multiple indoor set
The running frequency of machine, S2 is the indoor set total capacity after any one the indoor set generation communication failure in multiple indoor set, S1
For the indoor set total capacity before any one the indoor set generation communication failure in multiple indoor sets, B is predetermined coefficient.
Specifically, when any one or more indoor set generation communication failure in multiple on-line system, such as, indoor set because of
The circuit board of suddenly power-off or indoor set breaks down etc. when causing the communication with off-premises station to be broken down, and controls multi-connected machine system
System enters coolant detection pattern.Enter after coolant detection pattern in multiple on-line system, forbid the off-premises station in multiple on-line system and
The indoor set that communication failure does not occurs performs PI (Proportional Integral, proportional integral) and regulates or perform journey
Sequence automatically controls, and now can calculate the current goal frequency of compressor according to above-mentioned formula (1), and control compressor to work as
Front target frequency runs, and meanwhile, is not occurred the controller of each indoor set of communication failure to operate, so that not sending out by locking
Each indoor set of raw communication failure keeps current operating conditions.
S2, obtains pressure at expulsion and the back pressure of compressor of compressor, and judges many according to pressure at expulsion and back pressure
Whether on-line system there is coolant leakage.
According to one embodiment of present invention, judge whether multiple on-line system occurs coolant to let out according to pressure at expulsion and back pressure
Leakage, including: judge in Preset Time whether the rate of change of pressure at expulsion is less than first and preset rate of change, and judge Preset Time
Whether the rate of change of inner return-air pressure presets rate of change less than second；If the rate of change of pressure at expulsion presets change less than first
Rate, and the rate of change of back pressure presets rate of change less than second, then judge that multiple on-line system does not occurs coolant leakage.Wherein,
Preset Time, first preset rate of change and second and preset rate of change and can demarcate according to the time.
Specifically, run with current goal frequency controlling compressor, and control not occur each indoor set of communication failure to protect
After holding current operating conditions, detect pressure at expulsion and the back pressure of a period of time inner compressor, and the row to compressor in real time
Atmospheric pressure and back pressure judge.If the pressure at expulsion of compressor is decreased obviously, or the back pressure of compressor
It is decreased obviously, then judges multiple on-line system generation coolant leakage；If the pressure at expulsion of compressor is not apparent from declining, and
The back pressure of compressor is also not apparent from declining, then judge that multiple on-line system does not occurs coolant leakage, thus realize multi-connected machine
Whether system there is the automatic detection of coolant leakage.
S3, if it is determined that multiple on-line system does not occurs coolant leakage, then controls multiple on-line system properly functioning.
According to one embodiment of present invention, if it is determined that multiple on-line system generation coolant leakage, then control multiple on-line system and stop
Only run.
According to one embodiment of present invention, the control method of above-mentioned multiple on-line system also includes: if it is determined that multi-connected machine system
There is not coolant leakage in system, then sends communication failure alarm；If it is determined that multiple on-line system generation coolant leakage, then send out
Go out the prompting of coolant fault alarm.
Specifically, enter after coolant detection pattern in multiple on-line system, by the pressure at expulsion of compressor and back pressure
Change judges whether multiple on-line system occurs coolant leakage.If it occur that coolant leakage, then control multiple on-line system out of service,
And send coolant fault alarm and be prompted to user, send the prompting of coolant fault alarm at maintainer simultaneously, and wait urgent
Maintenance signal；If leaked, then release the controller operation of each indoor set that communication failure does not occurs, so that not
Each indoor set that communication failure occurs can be properly functioning, and sends communication failure alarm to user, sends cold simultaneously
The prompting of matchmaker's fault alarm at maintainer, and etc. Awaiting Overhaul signal.Maintainer, can after receiving fault alarm prompting
To judge whether to need to carry out emergency maintenance according to fault alarm prompting, in order to reasonable distribution human and material resources, and due to
System can detect whether coolant leakage automatically, and when coolant does not occurs leakage, maintainer can save coolant
Detection, and then efficiently solve employing artificial investigation mode time multiple on-line system is investigated, need to put into substantial amounts of manpower,
Material resources and time, the problem causing the wasting of resources.
Further, as in figure 2 it is shown, the control method of the multiple on-line system of the embodiment of the present invention may comprise steps of:
S101, there is communication failure in indoor set controller, the communication failure caused such as power-off or board failure.
S102, system enters coolant detection pattern, controls by following:
(1) current goal frequency F2=F1 of compressor × (S2/S1+B), i.e. compressor runs with frequency F2, Qi Zhongcan
Number implication is already described above, repeats no more here；
(2) the controller operation of locking indoor set, makes indoor set keep current operating conditions.
S103, whether pressure at expulsion and the back pressure of detection Preset Time inner compressor are decreased obviously.If it is, hold
Row step S106；If it does not, perform step S104.
S104, system continues properly functioning.
S105, reports communication failure, waits Awaiting Overhaul.
S106, system is out of service.
S107, reports coolant fault, emergency service.
In sum, the control method of multiple on-line system according to embodiments of the present invention, when any one in multiple indoor sets
During indoor set generation communication failure, control multiple on-line system and enter coolant detection pattern, then obtain the pressure at expulsion of compressor
With the back pressure of compressor, and judge whether multiple on-line system occurs coolant leakage according to pressure at expulsion and back pressure, as
Fruit judges that multiple on-line system does not occurs coolant leakage, then control multiple on-line system properly functioning, thus can not only ensure not send out
The indoor set of raw communication failure can be properly functioning, improves Consumer's Experience, and can be substantially reduced maintainer investigation fault
Time, improve maintainer maintenance efficiency.
Fig. 3 is the block diagram of multiple on-line system according to an embodiment of the invention.As it is shown on figure 3, this multi-connected machine system
System may include that multiple indoor set 10, off-premises station 20 and control module (not specifically illustrated in figure).
Wherein, off-premises station 20 includes compressor 21, control module any one indoor set 10 in multiple indoor sets 10
When there is communication failure, control multiple on-line system and enter coolant detection pattern, and obtain pressure at expulsion and the compression of compressor 21
The back pressure of machine 21, and judge whether multiple on-line system occurs coolant leakage according to pressure at expulsion and back pressure, and
Judge that multiple on-line system does not occurs to control multiple on-line system during coolant leakage properly functioning.
According to one embodiment of present invention, after multiple on-line system enters coolant detection pattern, control module obtains compressor
The current goal frequency of 21, and control compressor 21 and run with current goal frequency, and there is not communication by locking therefore
The controller of each indoor set 10 of barrier operates so that not occurring each indoor set 10 of communication failure to keep current operating conditions.
Wherein, current goal frequency can be obtained by above-mentioned formula (1).
According to one embodiment of present invention, whether control module is judging multiple on-line system according to pressure at expulsion and back pressure
When there is coolant leakage, wherein, in control module judges Preset Time, the rate of change of pressure at expulsion is the most default less than first becomes
Rate, and judge whether the rate of change of Preset Time inner return-air pressure presets rate of change less than second, and in pressure at expulsion
Rate of change presets rate of change less than first, and when the rate of change of back pressure presets rate of change less than second, it is judged that multi-connected machine system
There is not coolant leakage in system.
Specifically, when any one or more indoor sets 10 in multiple on-line system occur communication failure, such as, indoor set
10 because of the circuit board of unexpected power-off or indoor set 10 break down etc. cause breaking down with the communication of off-premises station 20 time, control
Multiple on-line system processed enters coolant detection pattern.After multiple on-line system enters coolant detection pattern, forbid in multiple on-line system
Off-premises station 20 and do not occur the indoor set 10 of communication failure perform PI regulation or perform procedure auto-control, the most permissible
According to above-mentioned formula (1) calculate compressor 21 current goal frequency, and control compressor 21 with current goal frequency run,
Meanwhile, the controller that each indoor set 10 of communication failure is not occurred by locking is operated, so that there is not the every of communication failure
Individual indoor set 10 keeps current operating conditions.
Run with current goal frequency controlling compressor 21, and control not occur each indoor set 10 of communication failure to keep
After current operating conditions, detect pressure at expulsion and the back pressure of a period of time inner compressor 21 in real time, and to compressor 21
Pressure at expulsion and back pressure judge.If the pressure at expulsion of compressor 21 is decreased obviously, or compressor 21
Back pressure be decreased obviously, then judge multiple on-line system generation coolant leakage；If the pressure at expulsion of compressor 21 is the brightest
Show and decline, and the back pressure of compressor 21 is also not apparent from declining, then judge that multiple on-line system does not occurs coolant leakage, from
And realize whether multiple on-line system is occurred the automatic detection of coolant leakage, and when there is not coolant leakage, control multi-connected machine
System continues properly functioning, thus is prevented effectively from the indoor set to not breaking down and impacts, and improves Consumer's Experience.
According to one embodiment of present invention, control module controls multi-connected machine system when judging multiple on-line system generation coolant leakage
Unite out of service.
According to one embodiment of present invention, the control method of above-mentioned multiple on-line system also includes: alarm module is (in figure not
Specifically illustrate), alarm module is connected with control module, and control module is when judging that multiple on-line system does not occurs coolant leakage, logical
Cross alarm module and send communication failure alarm, and when judging multiple on-line system generation coolant leakage, pass through alarm module
Send the prompting of coolant fault alarm.
Specifically, enter after coolant detection pattern in multiple on-line system, control module by the pressure at expulsion of compressor 21 and
The change of back pressure judges whether multiple on-line system occurs coolant leakage.If it occur that coolant leakage, then control module controls
Multiple on-line system is out of service, and sends coolant fault alarm by alarm module and be prompted to user, sends coolant fault simultaneously
Alarm is at maintainer, and waits emergency service signal；If leaked, then control module releases and does not occurs
The controller operation of each indoor set 10 of communication failure, so that not occurring each indoor set 10 of communication failure can be normal
Run, and send communication failure alarm to user by alarm module, send the prompting of coolant fault alarm to keeping in repair simultaneously
At personnel, and etc. Awaiting Overhaul signal.Maintainer, after receiving fault alarm prompting, can come according to fault alarm prompting
Judge whether to need to carry out emergency maintenance, in order to reasonable distribution human and material resources, and owing to system can detect whether automatically
Coolant leakage occurs, and when coolant does not occurs leakage, maintainer can save the detection to coolant, and then efficiently solve
When using artificial investigation mode that multiple on-line system is investigated, need to put into substantial amounts of human and material resources and time, cause
The problem of the wasting of resources.
Multiple on-line system according to embodiments of the present invention, control module any one indoor set in multiple indoor sets occurs logical
During news fault, control multiple on-line system and enter coolant detection pattern, and obtain the pressure at expulsion of compressor and the return-air of compressor
Pressure, and judge whether multiple on-line system occurs coolant leakage according to pressure at expulsion and back pressure, and judging multi-connected machine
It is properly functioning that system does not occurs to control multiple on-line system during coolant leakage, thus can not only ensure not occur the room of communication failure
Interior machine can be properly functioning, improves Consumer's Experience, and can be substantially reduced the time of maintainer investigation fault, improves dimension
Repair the maintenance efficiency of personnel.
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and can not
It is interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " the
One ", the feature of " second " can express or implicitly include at least one this feature.In describing the invention, " multiple "
It is meant that at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing "
Should be interpreted broadly Deng term, connect for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be
It is mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of individual element internal or the interaction relationship of two elements, unless otherwise clear and definite restriction.Common for this area
For technical staff, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or
Feature is contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term
Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible
One or more embodiment in office or example combine in an appropriate manner.Additionally, in the case of the most conflicting, ability
The feature of the different embodiments described in this specification or example and different embodiment or example can be entered by the technical staff in territory
Row combines and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary,
Being not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, revises, replaces and modification.
Claims (12)
1. the control method of a multiple on-line system, it is characterised in that described multiple on-line system includes multiple indoor set and outdoor
Machine, described off-premises station includes compressor, said method comprising the steps of:
When any one indoor set generation communication failure in the plurality of indoor set, control described multiple on-line system and enter cold
Matchmaker detects pattern；
Obtain pressure at expulsion and the back pressure of described compressor of described compressor, and according to described pressure at expulsion and described time
Atmospheric pressure judges whether described multiple on-line system occurs coolant leakage；And
If it is determined that described multiple on-line system does not occurs coolant leakage, then control described multiple on-line system properly functioning.
The control method of multiple on-line system the most according to claim 1, it is characterised in that described according to described exhaust pressure
Power and described back pressure judge whether described multiple on-line system occurs coolant leakage, including:
In judging Preset Time, whether the rate of change of described pressure at expulsion presets rate of change less than first, and judge described default time
Whether the rate of change of interior described back pressure presets rate of change less than second；
If the rate of change of described pressure at expulsion presets rate of change less than described first, and the rate of change of described back pressure is less than
Described second presets rate of change, then judge that described multiple on-line system does not occurs coolant leakage.
The control method of multiple on-line system the most according to claim 1 and 2, it is characterised in that in described multi-connected machine system
System enters after coolant detection pattern, obtains the current goal frequency of described compressor, and control described compressor with described currently
Target frequency runs, and is not occurred the controller of each indoor set of communication failure to operate so that there is not communication by locking
Each indoor set of fault keeps current operating conditions.
The control method of multiple on-line system the most according to claim 3, it is characterised in that described current goal frequency is led to
Cross below equation to obtain:
F2=F1 × (S2/S1+B),
Wherein, F2 is described current goal frequency, and F1 is any one the indoor set generation communication event in the plurality of indoor set
The running frequency of described compressor before barrier, after S2 is any one the indoor set generation communication failure in the plurality of indoor set
Indoor set total capacity, S1 is the indoor set total capacity before any one the indoor set generation communication failure in the plurality of indoor set,
B is predetermined coefficient.
The control method of multiple on-line system the most according to claim 1, it is characterised in that also include: if it is determined that institute
State multiple on-line system generation coolant leakage, then control described multiple on-line system out of service.
The control method of multiple on-line system the most according to claim 5, it is characterised in that also include:
If it is determined that described multiple on-line system does not occurs coolant leakage, then send communication failure alarm；
If it is determined that described multiple on-line system generation coolant leakage, then send the prompting of coolant fault alarm.
7. a multiple on-line system, it is characterised in that including:
Multiple indoor sets；
Off-premises station, described off-premises station includes compressor；
Control module, during any one indoor set generation communication failure in the plurality of indoor set of described control module, control
Make described multiple on-line system and enter coolant detection pattern, and obtain pressure at expulsion and the return-air of described compressor of described compressor
Pressure, and judge whether described multiple on-line system occurs coolant leakage according to described pressure at expulsion and described back pressure, and
Judge to control described multiple on-line system when described multiple on-line system does not occurs coolant leakage properly functioning.
Multiple on-line system the most according to claim 7, it is characterised in that described control module is according to described exhaust pressure
Power and described back pressure judge when whether described multiple on-line system occurs coolant leakage, wherein,
Described control module in judging Preset Time the rate of change of described pressure at expulsion whether preset rate of change less than first, and sentence
In disconnected described Preset Time, whether the rate of change of described back pressure presets rate of change less than second, and in described pressure at expulsion
Rate of change preset rate of change less than described first, and when the rate of change of described back pressure presets rate of change less than described second,
Judge that described multiple on-line system does not occurs coolant leakage.
9. according to the multiple on-line system described in claim 7 or 8, it is characterised in that enter coolant in described multiple on-line system
After detection pattern, described control module obtain described compressor current goal frequency, and control described compressor with described work as
Front target frequency runs, and is not occurred the controller of each indoor set of communication failure to operate so that described not sending out by locking
Each indoor set of raw communication failure keeps current operating conditions.
The control method of multiple on-line system the most according to claim 9, it is characterised in that described current goal frequency
Obtained by below equation:
F2=F1 × (S2/S1+B),
Wherein, F2 is described current goal frequency, and F1 is any one the indoor set generation communication event in the plurality of indoor set
The running frequency of described compressor before barrier, after S2 is any one the indoor set generation communication failure in the plurality of indoor set
Indoor set total capacity, S1 is the indoor set total capacity before any one the indoor set generation communication failure in the plurality of indoor set,
B is predetermined coefficient.
The control method of 11. multiple on-line system according to claim 7, it is characterised in that described control module is being sentenced
Described multiple on-line system is controlled out of service during disconnected described multiple on-line system generation coolant leakage.
The control method of 12. multiple on-line system according to claim 11, it is characterised in that also include:
Alarm module, described alarm module is connected with described control module, and described control module is judging described multiple on-line system
When there is not coolant leakage, send communication failure alarm by described alarm module, and judging described multiple on-line system
When there is coolant leakage, send coolant fault alarm by described alarm module and point out.
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