CN105588286B - Control method and device of multi-split air conditioner - Google Patents
Control method and device of multi-split air conditioner Download PDFInfo
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- CN105588286B CN105588286B CN201610088058.5A CN201610088058A CN105588286B CN 105588286 B CN105588286 B CN 105588286B CN 201610088058 A CN201610088058 A CN 201610088058A CN 105588286 B CN105588286 B CN 105588286B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000012545 processing Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 28
- 230000000694 effects Effects 0.000 description 8
- 238000004378 air conditioning Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a control method and device of a multi-split air conditioner. The control method comprises the following steps: detecting the exhaust temperature of the compressor of the multi-split air conditioner under the condition that the ratio of the first number of the first internal machines in the starting state to the total number of the internal machines of the multi-split air conditioner is smaller than a preset ratio; judging whether the exhaust temperature is greater than a first preset temperature or not; and if the exhaust temperature is higher than the first preset temperature, starting a second indoor unit in a shutdown state, wherein the indoor units of the multi-split air conditioner comprise a first indoor unit and a second indoor unit. The invention solves the technical problem that the exhaust temperature of the existing multi-split air conditioner cannot be effectively reduced.
Description
Technical field
The present invention relates to airconditioning control fields, in particular to a kind of control method and device of multi-connected machine.
Background technique
When existing multi-gang air-conditioner freezes, under environment temperature is higher and the longer situation of connection pipe for internal-external unit, usually
It reduces system pressure by reducing compressor frequency and increasing electronic expansion valve opening, reduce compressor exhaust temperature, to protect
Demonstrate,prove air-conditioning reliability service.Using the control method, delivery temperature or relatively high, when especially only opening an interior machine, due to being
Circulating refrigerant of uniting is few and connects pipe range, and the refrigerant after evaporator heat exchange continues to absorb heat in connecting tube, to make refrigerant mistake
Heat causes excessive discharge temperature.In addition, general multi-connected machine is equipped with oil eliminator, which will be from exhaust outlet of compressor
The compressor lubricant oil of discharge is separated, and is directly led back compressor air suction end (or gas-liquid separator), the oil and refrigerant of high temperature
Mixing, refrigerant temperature is further improved, can also refrigerant be made to overheat, cause excessive discharge temperature, is unfavorable for extending the compressor longevity
Life.
Multi-connected machine in cooling mode, due to environment temperature height, and connects pipe range, singly opens or use interior machine negligible amounts
When, system refrigerant circulation is few, the phenomenon that being easy to produce overheat refrigerant, make compressor air suction, excessive discharge temperature, the overheat
Refrigerant is further mixed with the press of high temperature oil again, is easy to appear exhaust protection and is shut down, reduces operational reliability, cause client not
It is full, even if by other controls (such as exhaust limits frequency reducing, target exhaust control electric expansion valve), press frequency minimum fortune
Row, interior machine restricting element electric expansion valve step number have opened to the maximum, and due to the superposition of various unfavorable factors, still will appear row
Temperature spends high phenomenon.
Aiming at the problem that delivery temperature can not be effectively reduced in above-mentioned existing multi-gang air-conditioner, not yet propose at present effective
Solution.
Summary of the invention
The embodiment of the invention provides a kind of control method and device of multi-connected machine, empty at least to solve existing multi-connected machine
The technical issues of delivery temperature can not be effectively reduced in tune.
According to an aspect of an embodiment of the present invention, a kind of control method of multi-connected machine is provided, which includes:
The case where ratio of the interior machine total amount of the first quantity and multi-connected machine of machine is less than default ratio in first in open state
Under, detect the delivery temperature of the compressor of the multi-connected machine；Judge whether the delivery temperature is greater than the first preset temperature；If institute
Delivery temperature is stated greater than first preset temperature, then opens machine in second in shutdown status, wherein the multi-connected machine
Interior machine includes machine in machine and described second in described first.
Further, it includes: true based on the first quantity and the interior machine total amount for opening machine in second in shutdown status
Second quantity of fixed interior machine to be opened；The electric expansion valve of machine is opened to first in open that quantity is second quantity second
Degree.
Further, determine that the second quantity of interior machine to be opened includes: to calculate based on the first quantity and the interior machine total amount
The difference of the interior machine total amount and first quantity obtains the third quantity N of machine in shutting down in the multi-connected machine；Described in judgement
Whether interior machine total amount is greater than preset quantity；If the interior machine total amount is not more than the preset quantity, the third quantity is made
For second quantity；If the interior machine total amount is greater than the preset quantity, second quantity is determined as follows
M, wherein M=x*N, wherein M and N is natural number, and x is the real number greater than 0 and less than 1.
Further, open quantity be second quantity second in machine electric expansion valve to the first aperture it
Afterwards, the control method further include: when detecting the delivery temperature of compressor of the multi-connected machine lower than the second preset temperature,
Close the electric expansion valve of machine in described second, wherein first preset temperature is higher than second preset temperature.
Further, open quantity be second quantity second in machine electric expansion valve to the first aperture it
Afterwards, the control method further include: when detecting the delivery temperature of compressor of the multi-connected machine lower than the second preset temperature,
The electric expansion valve of machine in described second is adjusted to the second aperture, wherein it is pre- that first preset temperature is higher than described second
If temperature, second aperture is less than first aperture.
According to another aspect of an embodiment of the present invention, a kind of control device of multi-connected machine is additionally provided, the control device packet
Include: detection unit, the ratio for the interior machine total amount of the first quantity and multi-connected machine of machine in first in open state are small
In the case where default ratio, the delivery temperature of the compressor of the multi-connected machine is detected；Judging unit, for judging the exhaust
Whether temperature is greater than the first preset temperature；Opening unit is opened if being greater than first preset temperature for the delivery temperature
Open machine in second in shutdown status, wherein the interior machine of the multi-connected machine includes machine in machine and described second in described first.
Further, the opening unit comprises determining that module, for being determined based on the first quantity and the interior machine total amount
Second quantity of interior machine to be opened；Opening module, for open quantity be second quantity second in machine electronic expansion
Valve is to the first aperture.
Further, the determining module includes: computing module, for calculating the interior machine total amount and first quantity
Difference, obtain in the multi-connected machine shut down in machine third quantity N；Judgment module, for whether judging the interior machine total amount
Greater than preset quantity；First processing module, if being not more than the preset quantity for the interior machine total amount, by the third number
Amount is used as second quantity；Second processing module, if being greater than the preset quantity for the interior machine total amount, according to as follows
Mode determines the second quantity M, wherein M=x*N, wherein M and N is natural number, and x is the real number greater than 0 and less than 1.
Further, the control device further include: closedown module, in open that quantity is second quantity the
In two after the electric expansion valve of machine to the first aperture, when the delivery temperature for the compressor for detecting the multi-connected machine is lower than second
When preset temperature, the electric expansion valve of machine in described second is closed, wherein it is default that first preset temperature is higher than described second
Temperature.
Further, the control device further include: adjustment module, in open that quantity is second quantity the
In two after the electric expansion valve of machine to the first aperture, when the delivery temperature for the compressor for detecting the multi-connected machine is lower than second
When preset temperature, the electric expansion valve of machine in described second is adjusted to the second aperture, wherein first preset temperature is higher than
Second preset temperature, second aperture are less than first aperture.
In embodiments of the present invention, using the first quantity of machine and the interior machine of multi-connected machine in first in open state
In the case that the ratio of total amount is less than default ratio, the delivery temperature of the compressor of the multi-connected machine is detected；Judge the exhaust
Whether temperature is greater than the first preset temperature；If the delivery temperature is greater than first preset temperature, open in shutdown shape
The mode of machine in the second of state, by opening machine in second in shutdown status, having reached increase when delivery temperature is higher
The purpose of system refrigerant circulation to realize the technical effect for reducing the delivery temperature of compressor of multi-connected machine, and then solves
The technical issues of delivery temperature can not be effectively reduced in existing multi-gang air-conditioner of having determined.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of flow chart of the control method of multi-connected machine according to an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the control method of optional multi-connected machine according to an embodiment of the present invention；And
Fig. 3 is a kind of schematic diagram of the control device of multi-connected machine according to an embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
The model that the present invention protects all should belong in member's every other embodiment obtained without making creative work
It encloses.
It should be noted that description and claims of this specification and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to illustrating herein or
Sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to
Step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, product
Or other step or units that equipment is intrinsic.
According to embodiments of the present invention, a kind of embodiment of the control method of multi-connected machine is provided, it should be noted that attached
The step of process of figure illustrates can execute in a computer system such as a set of computer executable instructions, though also,
So logical order is shown in flow charts, but in some cases, it can be to be different from shown by sequence execution herein
Or the step of description.
Fig. 1 is a kind of flow chart of the control method of multi-connected machine according to an embodiment of the present invention, as shown in Figure 1, the control
Method includes the following steps:
Step S102, the ratio of the interior machine total amount of the first quantity and multi-connected machine of machine is small in first in open state
In the case where default ratio, the delivery temperature of the compressor of multi-connected machine is detected.
Step S104, judges whether delivery temperature is greater than the first preset temperature.
Step S106 opens machine in second in shutdown status if delivery temperature is greater than the first preset temperature,
In, the interior machine of multi-connected machine includes machine in machine and second in first.
The state that machine is opened and worked normally in open state expression in above-described embodiment, is in shutdown status table
Show that interior machine is not turned on the state not worked normally.
Using the embodiment of the present invention, pass through the first quantity of machine and the interior machine of multi-connected machine in first in open state
In the case that the ratio of total amount is less than default ratio, the delivery temperature of the compressor of multi-connected machine is detected；Whether judge delivery temperature
Greater than the first preset temperature；If delivery temperature is greater than the first preset temperature, the side of machine in second in shutdown status is opened
Formula has reached by opening machine in second in shutdown status when delivery temperature is higher and has increased system refrigerant circulation
Purpose to realize the technical effect for reducing the delivery temperature of compressor of multi-connected machine, and then solves existing multi-connected machine
The technical issues of delivery temperature can not be effectively reduced in air-conditioning.
Specifically, multi-connected machine in cooling mode, due to environment temperature height, and connects pipe range, singly opens or use interior machine number
When measuring less, that is, the ratio for being in the interior machine total amount of the first quantity and multi-connected machine of machine in the first of open state is less than default ratio
The phenomenon that in the case where value, system refrigerant circulation is few, is easy to produce overheat refrigerant, makes compressor air suction, excessive discharge temperature,
The refrigerant of the overheat is further mixed with the press of high temperature oil again, is easy to appear exhaust protection and is shut down, reduces operational reliability, draw
It is discontented to play client, even if press frequency is by other controls (such as the frequency reducing of exhaust limit, target exhaust control electric expansion valve)
Through minimum operation, interior machine restricting element electric expansion valve step number has been opened to the maximum, due to the superposition of various unfavorable factors, still
It will appear excessive discharge temperature phenomenon.
Through the foregoing embodiment, when multi-connected machine singly opens interior machine under high temperature environment or using interior machine negligible amounts the case where
Under namely above-described embodiment in in open state first in machine the first quantity and multi-connected machine interior machine total amount ratio
It, can when judging that the delivery temperature of compressor of multi-connected machine is greater than the first preset temperature in the case that value is less than default ratio
It is in machine in the second of shutdown status to open other, to pass through the internal circulating load of increase system refrigerant, avoids and singly opens interior machine
The system refrigerant of Shi Shaoliang continues the phenomenon that absorbing heat and overheating, cause air-breathing and excessive discharge temperature in connecting tube, thus real
The effect for having showed air-breathing and delivery temperature that the compressor of multi-connected machine is effectively reduced ensure that multi-connected machine under various unfavorable conditions
Do not occur the phenomenon that shutting down because of delivery temperature protection, improves the reliability of operation of multi-connected machine.
Optionally, it includes: based on first that the step S106 in above-described embodiment, which opens machine in second in shutdown status,
Quantity and interior machine total amount determine the second quantity of interior machine to be opened；Unlatching quantity is the electronic expansion of machine in the second of the second quantity
Valve is to the first aperture.Electric expansion valve in above-described embodiment is a kind of control member for controlling the refrigerant circulation of interior machine
Part.
It through the foregoing embodiment, can be by the first quantity and interior machine total amount of machine in first in open state come fast
Speed effectively determines the second quantity of interior machine to be opened, and by adjusting machine in second in shutdown status of second quantity
Electric expansion valve is to the first aperture, so that reaching flexibly control opens the electric expansion valve of machine in be in shutdown status second
Purpose realizes the coolant quantity for accurately controlling and increasing circulation, the delivery temperature of the compressor of multi-connected machine is flexibly effectively reduced
Effect.
In above-mentioned optional embodiment, the second quantity packet of interior machine to be opened is determined based on the first quantity and interior machine total amount
Include: the difference of machine total amount and the first quantity in calculating obtains the third quantity N of machine in shutting down in multi-connected machine；Machine total amount in judging
Whether preset quantity is greater than；If interior machine total amount is not more than preset quantity, using third quantity as the second quantity；If interior machine total amount
Greater than preset quantity, then the second quantity M is determined as follows, wherein M=x*N, wherein represent third quantity, M and N are
Natural number, x are the real number greater than 0 and less than 1.
In the above-described embodiments, it is poor the first quantity of interior machine total amount and machine in first in open state can be made,
The third quantity of the interior machine in multi-connected machine in shutdown status is found out, and when interior machine total amount is greater than preset quantity, then unlatching is all
Interior machine in shutdown status, i.e., at this point, the second quantity of interior machine to be opened is equal to the third number of the interior machine in shutdown status
Amount；When interior machine total amount is not more than preset quantity, then open the interior machine of shutdown status of being partially in, i.e., at this point, interior machine to be opened
Third the quantity N, the second quantity M that second quantity M is less than the interior machine in shutdown status can be x times of presupposition multiple of third number
Measure N, i.e. M=x*N, wherein presupposition multiple x is greater than 0 real number less than 1.It through the foregoing embodiment, can be according in multi-connected machine
The actual conditions of machine operation flexibly to control machine in unlatching, to reach saving benefit while delivery temperature is effectively reduced
With the effect of electric energy.
Specifically, when singly opening or open machine in a small amount of, and there is the shape of the excessive discharge temperature of the compressor of multi-connected machine
When condition, judgement is then turned on how many interior machines, this will see the situation of machine sum in specific, if interior machine sum is less, for example,
One shares 6 interior machines, and when only opening an interior machine, that is, the first quantity for being in machine in the first of open state is 1, that
Remaining all interior machines can be opened, i.e., the second quantity of interior machine to be opened is equal to the third of the interior machine in shutdown status
Quantity, also as 5.In another example only opening two interior machines, and delivery temperature mistake occur if one shares 20 interior machines
High phenomenon, i.e., the first quantity of machine is 2 in first in open state, then remaining half quantity can be opened only
Interior machine, i.e., the second quantity M of interior machine to be opened are the half namely x=(1/2) of third quantity N, M=(1/2) * N.
It optionally, is the control in the second of the second quantity after the electric expansion valve to the first aperture of machine in unlatching quantity
Method processed further include: when detecting the delivery temperature of compressor of multi-connected machine lower than the second preset temperature, close machine in second
Electric expansion valve, wherein the first preset temperature be higher than the second preset temperature.
In the above-described embodiments, in open the second quantity second after the electric expansion valve of machine, the refrigerant of system circulation
The phenomenon that amount increases, and avoids a small amount of refrigerant overheat and the delivery temperature increase of the compressor of the multi-connected machine of appearance, it is effective to drop
Low delivery temperature, when which is decreased below the second preset temperature, can close machine in the second of the second quantity
Electric expansion valve.Through the foregoing embodiment, the delivery temperature of the compressor of multi-connected machine can be effectively controlled, delivery temperature is improved
Stability, guarantee the traveling comfort of multi-line system.
It optionally, is control in the second of the second quantity after the electric expansion valve to the first aperture of machine in unlatching quantity
Method further include: when detecting the delivery temperature of compressor of multi-connected machine lower than the second preset temperature, by the electricity of machine in second
Sub- expansion valve is adjusted to the second aperture, wherein the first preset temperature is higher than the second preset temperature, and the second aperture is opened less than first
Degree.
Through the foregoing embodiment, it is after the electric expansion valve to the first aperture of machine in open the second quantity second
The coolant quantity of system circulation increased, avoid because singly open how many amounts open in machine when circulating refrigerant it is less caused by refrigerant mistake
The phenomenon that delivery temperature of hot, multi-connected machine compressor increases, so that delivery temperature effectively reduces, when the delivery temperature reduces
To when being lower than the second preset temperature, the aperture of the electric expansion valve of machine in second can be turned down by the first aperture to second and be opened
Degree, makes circulating refrigerant tail off, so that delivery temperature is gone up again.Through the foregoing embodiment, it can effectively control more
The delivery temperature of online compressor is controlled the stability for improving delivery temperature in a certain range, guarantees multi-connected machine
The traveling comfort of system.
Fig. 2 is a kind of flow chart of the control method of optional multi-connected machine according to an embodiment of the present invention, as shown in Fig. 2,
When the first preset temperature is 107 DEG C, the second preset temperature is 100 DEG C, which be may include steps of:
Step S202 detects the delivery temperature of the compressor of multi-connected machine.
Specifically, the pressure of multi-connected machine can be detected by detection exhaust temperature sensing package temperature value under single on-mode of freezing
The delivery temperature of contracting machine.
Step S204, judges whether the delivery temperature of the compressor of multi-connected machine is higher than 107 DEG C.
Specifically, judge whether the delivery temperature of the compressor of multi-connected machine reaches 107 DEG C (i.e. first preset temperatures), when sentencing
It is disconnected go out multi-connected machine the delivery temperature of compressor be higher than 107 DEG C, i.e. judging result is yes, S206 is thened follow the steps, when judging
The delivery temperature of the compressor of multi-connected machine is not higher than 107 DEG C, i.e. judging result is no, thens follow the steps S208.
Step S206 opens the electric expansion valve of machine in second in shutdown status, when detecting that delivery temperature is lower than
The electric expansion valve of machine in second is closed at 100 DEG C.
Specifically, can be sent instructions by mainboard to other idle one or several interior machine (i.e. in shutdown status
Second in machine), its electric expansion valve is opened into certain aperture or standard-sized sheet, the delivery temperature to be checked that measures are reduced to a certain temperature
When being worth (i.e. the second preset threshold, such as 100 DEG C), the electronics of the interior machine that do not work (being in machine in the second of shutdown status) is closed
Expansion valve.
Step S208, by former control logic operation.
Specifically, machine in multi-connected machine can be run according to original control logic, until the exhaust of the compressor of multi-connected machine
When temperature is higher than 107 DEG C, then detect the delivery temperature of the compressor of multi-connected machine.
The first preset temperature in above-described embodiment is higher than the second preset temperature, that is, opens and closes in shutdown status
The condition of the judgement temperature of machine is different in second, delivery temperature decision content (i.e. the first preset temperature and the second preset temperature)
It can be set, can also be made according to usually experience, and can fit according to variety classes compressor specifications or actual needs
Work as floating, delivery temperature decision content (i.e. the first preset temperature and the second preset temperature) frequently opens other if setting is lower
Indoor unit (machine in i.e. second), can generate some throttling noises.To avoid above-mentioned phenomenon, the first preset temperature can be set as
107 DEG C, the second preset temperature is set as 100 DEG C, wherein since 107 DEG C have been compared high temperature, needs to open other interior machines (i.e.
Machine in second) cool down, and 100 DEG C of following temperature are reasonable, can close other machines in second, the first preset temperature and second pre-
If 7 DEG C of the temperature difference can make the time cycle opened and closed relatively reasonable between temperature, it is unlikely to the too small frequent switching of the temperature difference,
Or too big other interior machine overlong times of unlatching of the temperature difference.
The first preset temperature and the second preset temperature in above-mentioned alternative embodiment can be inputted by input screen,
I.e. user can need to adjust the first preset temperature and the second preset temperature according to itself, to improve the comfort of user
Experience.
According to another aspect of an embodiment of the present invention, a kind of control device of multi-connected machine is additionally provided, Fig. 3 is according to this hair
The schematic diagram of the control device of a kind of multi-connected machine of bright embodiment, as shown in figure 3, the control device includes: detection unit 20, sentences
Disconnected unit 40 and opening unit 60.
Wherein, detection unit 20, for the first quantity of machine and the interior machine of multi-connected machine in first in open state
In the case that the ratio of total amount is less than default ratio, the delivery temperature of the compressor of multi-connected machine is detected；Judging unit 40, for sentencing
Whether disconnected delivery temperature is greater than the first preset temperature；Opening unit 60 is opened if being greater than the first preset temperature for delivery temperature
Open machine in second in shutdown status, wherein the interior machine of multi-connected machine includes machine in machine and second in first.
Using the embodiment of the present invention, pass through the first quantity of machine and the interior machine of multi-connected machine in first in open state
In the case that the ratio of total amount is less than default ratio, the delivery temperature of the compressor of multi-connected machine is detected；Whether judge delivery temperature
Greater than the first preset temperature；If delivery temperature is greater than the first preset temperature, the side of machine in second in shutdown status is opened
Formula has reached by opening machine in second in shutdown status when delivery temperature is higher and has increased system refrigerant circulation
Purpose to realize the technical effect for reducing the delivery temperature of compressor of multi-connected machine, and then solves existing multi-connected machine
The technical issues of delivery temperature can not be effectively reduced in air-conditioning.
Optionally, opening unit comprises determining that module, for determining interior machine to be opened based on the first quantity and interior machine total amount
The second quantity；Opening module, for opening that quantity is the second quantity second in machine electric expansion valve to the first aperture.
It through the foregoing embodiment, can be by the first quantity and interior machine total amount of machine in first in open state come fast
Speed effectively determines the second quantity of interior machine to be opened, and by adjusting machine in second in shutdown status of second quantity
Electric expansion valve is to the first aperture, so that reaching flexibly control opens the electric expansion valve of machine in be in shutdown status second
Purpose realizes the coolant quantity for accurately controlling and increasing circulation, the delivery temperature of the compressor of multi-connected machine is flexibly effectively reduced
Effect.
Optionally it is determined that module includes: computing module, for calculating the difference of interior machine total amount and the first quantity, obtain more
The third quantity N of machine in online middle shutdown；Judgment module, for judging whether interior machine total amount is greater than preset quantity；First processing
Module, if being not more than preset quantity for interior machine total amount, using third quantity as the second quantity；Second processing module is used for
If interior machine total amount is greater than preset quantity, the second quantity M is determined as follows, wherein M=x*N, wherein M and N is certainly
So number, x are the real number greater than 0 and less than 1.
In the above-described embodiments, it is poor the first quantity of interior machine total amount and machine in first in open state can be made,
The third quantity of the interior machine in multi-connected machine in shutdown status is found out, and when interior machine total amount is greater than preset quantity, then unlatching is all
Interior machine in shutdown status, i.e., at this point, the second quantity of interior machine to be opened is equal to the third number of the interior machine in shutdown status
Amount；When interior machine total amount is not more than preset quantity, then open the interior machine of shutdown status of being partially in, i.e., at this point, interior machine to be opened
Third the quantity N, the second quantity M that second quantity M is less than the interior machine in shutdown status can be x times of presupposition multiple of third number
Measure N, i.e. M=x*N, wherein presupposition multiple x is greater than 0 real number less than 1.It through the foregoing embodiment, can be according in multi-connected machine
The actual conditions of machine operation flexibly to control machine in unlatching, to reach saving benefit while delivery temperature is effectively reduced
With the effect of electric energy.
Optionally, the control device further include: closedown module, for being machine in the second of the second quantity in unlatching quantity
After electric expansion valve to the first aperture, when detecting the delivery temperature of compressor of multi-connected machine lower than the second preset temperature,
Close the electric expansion valve of machine in second, wherein the first preset temperature is higher than the second preset temperature.
In the above-described embodiments, in open the second quantity second after the electric expansion valve of machine, the refrigerant of system circulation
The phenomenon that amount increases, and avoids a small amount of refrigerant overheat and the delivery temperature increase of the compressor of the multi-connected machine of appearance, it is effective to drop
Low delivery temperature, when which is decreased below the second preset temperature, can close machine in the second of the second quantity
Electric expansion valve.Through the foregoing embodiment, the delivery temperature of the compressor of multi-connected machine can be effectively controlled, delivery temperature is improved
Stability, guarantee the traveling comfort of multi-line system.
Optionally, the control device further include: adjustment module, for being machine in the second of the second quantity in unlatching quantity
After electric expansion valve to the first aperture, when detecting the delivery temperature of compressor of multi-connected machine lower than the second preset temperature,
The electric expansion valve of machine in second is adjusted to the second aperture, wherein the first preset temperature is higher than the second preset temperature, and second opens
Degree is less than the first aperture.
Through the foregoing embodiment, it is after the electric expansion valve to the first aperture of machine in open the second quantity second
The coolant quantity of system circulation increased, avoid because singly open how many amounts open in machine when circulating refrigerant it is less caused by refrigerant mistake
The phenomenon that delivery temperature of hot, multi-connected machine compressor increases, so that delivery temperature effectively reduces, when the delivery temperature reduces
To when being lower than the second preset temperature, the aperture of the electric expansion valve of machine in second can be turned down by the first aperture to second and be opened
Degree, makes circulating refrigerant tail off, so that delivery temperature is gone up again.Through the foregoing embodiment, it can effectively control more
The delivery temperature of online compressor is controlled the stability for improving delivery temperature in a certain range, guarantees multi-connected machine
The traveling comfort of system.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
In the above embodiment of the invention, it all emphasizes particularly on different fields to the description of each embodiment, does not have in some embodiment
The part of detailed description, reference can be made to the related descriptions of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of unit or module
It connects, can be electrical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
On unit.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can for personal computer, server or network equipment etc.) execute each embodiment the method for the present invention whole or
Part steps.And storage medium above-mentioned includes: that USB flash disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic or disk etc. be various to can store program code
Medium.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of control method of multi-connected machine characterized by comprising
Multi-connected machine in cooling mode, the interior machine total amount of the first quantity of machine and multi-connected machine in first in open state
In the case that ratio is less than default ratio, the delivery temperature of the compressor of the multi-connected machine is detected；
Judge whether the delivery temperature is greater than the first preset temperature；
If the delivery temperature is greater than first preset temperature, machine in second in shutdown status is opened,
Wherein, the interior machine of the multi-connected machine includes machine in machine and described second in described first；Open the in shutdown status
Machine includes: in two
The second quantity of interior machine to be opened is determined based on first quantity and the interior machine total amount；
The electric expansion valve of machine is to the first aperture in open that quantity is second quantity second.
2. control method according to claim 1, which is characterized in that true based on first quantity and the interior machine total amount
The second quantity of interior machine to be opened includes: calmly
The difference for calculating the interior machine total amount and first quantity obtains the third quantity N of machine in shutting down in the multi-connected machine；
Judge whether the interior machine total amount is greater than preset quantity；
If the interior machine total amount is not more than the preset quantity, using the third quantity as second quantity；
If the interior machine total amount is greater than the preset quantity, the second quantity M is determined as follows, wherein M=x*
N, wherein M and N is natural number, and x is the real number greater than 0 and less than 1.
3. control method according to claim 1, which is characterized in that in unlatching quantity is the second of second quantity
After the electric expansion valve of machine to the first aperture, the control method further include:
When detecting the delivery temperature of compressor of the multi-connected machine lower than the second preset temperature, machine in described second is closed
Electric expansion valve, wherein first preset temperature is higher than second preset temperature.
4. control method according to claim 1, which is characterized in that in unlatching quantity is the second of second quantity
After the electric expansion valve of machine to the first aperture, the control method further include:
When detecting the delivery temperature of compressor of the multi-connected machine lower than the second preset temperature, by the electricity of machine in described second
Sub- expansion valve is adjusted to the second aperture, wherein first preset temperature is higher than second preset temperature, second aperture
Less than first aperture.
5. a kind of control device of multi-connected machine characterized by comprising
Detection unit, for multi-connected machine in cooling mode, in open state first in machine the first quantity with it is multi-joint
In the case that the ratio of the interior machine total amount of machine is less than default ratio, the delivery temperature of the compressor of the multi-connected machine is detected；
Judging unit, for judging whether the delivery temperature is greater than the first preset temperature；
Opening unit opens if being greater than first preset temperature for the delivery temperature and is in the second of shutdown status
Interior machine,
Wherein, the interior machine of the multi-connected machine includes machine in machine and described second in described first；The opening unit includes:
Determining module, for determining the second quantity of interior machine to be opened based on first quantity and the interior machine total amount；
Opening module, for opening that quantity is second quantity second in machine electric expansion valve to the first aperture.
6. control device according to claim 5, which is characterized in that the determining module includes:
Computing module obtains in the multi-connected machine in shutdown for calculating the difference of the interior machine total amount and first quantity
The third quantity N of machine；
Judgment module, for judging whether the interior machine total amount is greater than preset quantity；
First processing module, if being not more than the preset quantity for the interior machine total amount, using the third quantity as institute
State the second quantity；
Second processing module determines described the if being greater than the preset quantity for the interior machine total amount as follows
Two quantity M, wherein M=x*N, wherein M and N is natural number, and x is the real number greater than 0 and less than 1.
7. control device according to claim 5, which is characterized in that the control device further include:
Closedown module, for open quantity be second quantity second in machine electric expansion valve to the first aperture it
Afterwards, when detecting the delivery temperature of compressor of the multi-connected machine lower than the second preset temperature, machine in described second is closed
Electric expansion valve, wherein first preset temperature is higher than second preset temperature.
8. control device according to claim 5, which is characterized in that the control device further include:
Adjust module, for open quantity be second quantity second in machine electric expansion valve to the first aperture it
Afterwards, when detecting the delivery temperature of compressor of the multi-connected machine lower than the second preset temperature, by the electricity of machine in described second
Sub- expansion valve is adjusted to the second aperture, wherein first preset temperature is higher than second preset temperature, second aperture
Less than first aperture.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106369757B (en) * | 2016-09-28 | 2019-01-18 | 珠海格力电器股份有限公司 | Multi-split compressor frequency control method and device and multi-split air conditioner |
| CN107270474B (en) * | 2017-06-05 | 2019-09-27 | 广东美的暖通设备有限公司 | The recognition methods of mainboard control logic, device and air-conditioning |
| CN108195034B (en) * | 2017-12-08 | 2020-06-26 | 广东美的暖通设备有限公司 | Control method and device of inner unit, inner unit and multi-connected air conditioner |
| CN109974223B (en) * | 2019-04-01 | 2020-10-02 | 珠海格力电器股份有限公司 | Air conditioner control method and device for adjusting air conditioner work according to weather forecast |
| CN110081554B (en) * | 2019-05-07 | 2020-12-25 | 珠海格力电器股份有限公司 | Control method and device of multi-split air conditioning system |
| WO2023221331A1 (en) * | 2022-05-18 | 2023-11-23 | 美的集团武汉暖通设备有限公司 | Multi-split air conditioner control method, multi-split air conditioner, and storage medium |
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