CN109114778A - Multi-connected air conditioning system and its control method, device, readable storage medium storing program for executing - Google Patents
Multi-connected air conditioning system and its control method, device, readable storage medium storing program for executing Download PDFInfo
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- CN109114778A CN109114778A CN201810947843.0A CN201810947843A CN109114778A CN 109114778 A CN109114778 A CN 109114778A CN 201810947843 A CN201810947843 A CN 201810947843A CN 109114778 A CN109114778 A CN 109114778A
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- air conditioning
- conditioning system
- solenoid valve
- connected air
- heat exchanger
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of multi-connected air conditioning systems, including including at least one outdoor unit and multiple indoor units, it is characterized in that, the indoor unit includes multiple indoor heat exchangers being connected in parallel, and multiple solenoid valves, the multiple solenoid valve are connected with the inlet and outlet of the corresponding indoor heat exchanger respectively；The multi-connected air conditioning system further includes controller, and the controller is used to control the opening and closing of the multiple solenoid valve, with when the multiple solenoid valve is closed, the corresponding indoor heat exchanger forbids heat exchange operation, reduces the load of the multi-connected air conditioning system.The invention also discloses a kind of control method of multi-connected air conditioning system, device and computer readable storage mediums.The present invention improves multi-connected air conditioning system reliability of operation.
Description
Technical field
The present invention relates to air conditioner technical field more particularly to a kind of multi-connected air conditioning system and its control method, device,
Readable storage medium storing program for executing.
Background technique
With the development of science and technology, multi-connected air conditioning system is gradually used widely comprising indoor unit and outdoor unit, room
The quantity of outer machine is usually one or more, and the quantity of indoor unit is usually multiple, and each indoor unit includes an interior
Heat exchanger carries out indoor heat exchange and realizes heating/refrigeration.In some cases when system excess load, generally by closing
Outdoor unit avoids multi-connected air conditioning system overload operation, namely shuts down, this has resulted in multi-connected air conditioning system can not be after
Continuous refrigerating/heating, therefore, multi-connected air conditioning system reliability of operation is to be improved.
Summary of the invention
The main object of the present invention is to provide a kind of multi-connected air conditioning system and its control method, device, readable storage medium
Matter, it is intended to solve the problems, such as that multi-connected air conditioning system reliability of operation is not high in the prior art.
To achieve the above object, the present invention proposes that a kind of multi-connected air conditioning system, the multi-connected air conditioning system include extremely
A few outdoor unit and multiple indoor units, which is characterized in that the indoor unit includes multiple indoor heat exchangers being connected in parallel, with
And multiple solenoid valves, the multiple solenoid valve are connected with the inlet and outlet of the corresponding indoor heat exchanger respectively；It is described more
Connection formula air-conditioning system further includes controller, and the controller is used to control the opening and closing of the multiple solenoid valve, the multiple
When solenoid valve is closed, the corresponding indoor heat exchanger forbids heat exchange operation, reduces the load of the multi-connected air conditioning system.
Preferably, the indoor heat exchanger includes the first indoor heat exchanger and the second indoor heat exchanger, the solenoid valve packet
The first solenoid valve and second solenoid valve are included, the inlet and outlet of second indoor heat exchanger is separately connected first solenoid valve
With the second solenoid valve；The controller is used to control first solenoid valve and the second solenoid valve beats on or off
It closes.
In addition, to achieve the above object, the present invention also proposes a kind of control method of multi-connected air conditioning system, described multi-joint
Formula air-conditioning system is multi-connected air conditioning system described above, and the control method of the multi-connected air conditioning system includes following step
It is rapid:
Detect the current running state information of the multi-connected air conditioning system；
Information according to the operation state determines the open and-shut mode information that the solenoid valve is currently suitable for；
According to the open and-shut mode information, the solenoid valve opening and closing is controlled.
Preferably, the information according to the operation state determines the open and-shut mode information that the solenoid valve is currently suitable for
The step of include:
When the running state information is cryogenic refrigeration, the open and-shut mode information for determining that the solenoid valve is currently suitable for is
It closes.
Preferably, the information according to the operation state determines the open and-shut mode information that the solenoid valve is currently suitable for
The step of include:
When the running state information is high-temperature refrigeration, the open and-shut mode information for determining that the solenoid valve is currently suitable for is
It closes.
Preferably, described when the running state information is high-temperature refrigeration, it determines that the solenoid valve is currently suitable and opens
Closed state information is the step of closing
When the running state information is high-temperature refrigeration, the return-air degree of superheat of the multi-connected air conditioning system is detected；
When the return-air degree of superheat is greater than default degree of superheat threshold value, the open and-shut mode that the solenoid valve is currently suitable for is determined
Information is to close.
Preferably, the information according to the operation state determines the open and-shut mode information that the solenoid valve is currently suitable for
The step of include:
When the running state information is heating and heating duration is less than preset duration threshold value, determine that the solenoid valve is worked as
Preceding suitable open and-shut mode information is to close.
Preferably, the information according to the operation state determines the open and-shut mode information that the solenoid valve is currently suitable for
The step of include:
When the running state information is low-temperature heating, the open and-shut mode information for determining that the solenoid valve is currently suitable for is
It closes.
In addition, to achieve the above object, the present invention also proposes a kind of control device of multi-connected air conditioning system, described multi-joint
The control device of formula air-conditioning system includes: memory, processor and is stored on the memory and can be on the processor
The multi-connected air conditioning system of operation controls program；The multi-connected air conditioning system control program is realized when being executed by the processor
The step of control method of multi-connected air conditioning system as described above.
In addition, to achieve the above object, it is described computer-readable the present invention also provides a kind of computer readable storage medium
Multi-connected air conditioning system control program is stored on storage medium, the multi-connected air conditioning system control program is executed by processor
The step of control method of multi-connected air conditioning system Shi Shixian as described above.
In technical solution of the present invention, the indoor unit of multi-connected air conditioning system includes multiple indoor heat exchangers, at least one room
The inlet and outlet of interior heat exchanger is connected with solenoid valve, by the operating condition according to multi-connected air conditioning system, controls solenoid valve
Opening and closing, solenoid valve open when, respective chambers heat exchanger is normally carried out heat exchange, solenoid valve close when, respective chambers exchange heat
Device is forbidden exchanging heat, to reduce the load of multi-connected air conditioning system, avoids multi-connected air conditioning system overload operation, therefore, from mentioning
High multi-connected air conditioning system reliability of operation.
Detailed description of the invention
Fig. 1 is the structural representation for the optional multi-connected air conditioning system indoor unit that the embodiment of the present invention is related to
Figure；
Fig. 2 is the structural schematic diagram for the optional multi-connected air conditioning system that the embodiment of the present invention is related to；
Fig. 3 is the control device structure of the multi-connected air conditioning system for the hardware running environment that the embodiment of the present invention is related to
Schematic diagram；
Fig. 4 is the flow diagram of the control method first embodiment of multi-connected air conditioning system of the invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The solution of the embodiment of the present invention is mainly: the indoor unit of multi-connected air conditioning system includes multiple indoor heat exchange
The inlet and outlet of device, at least one indoor heat exchanger is separately connected solenoid valve, passes through the operation according to multi-connected air conditioning system
Situation controls the opening and closing of solenoid valve, and when solenoid valve is opened, respective chambers heat exchanger is operated normally, when solenoid valve is closed, phase
Indoor heat exchanger is answered not run, so that the load of multi-connected air conditioning system is reduced, without avoiding multiple by shutting down
Air-conditioning system overload operation.Technical solution through the embodiment of the present invention solves the reliable of multi-connected air conditioning system operation
The not high problem of property.
The embodiment of the present invention proposes a kind of multi-connected air conditioning system.
In the present embodiment, the multi-connected air conditioning system is by multiple indoor units and at least one outdoor unit at, wherein room
Interior machine includes multiple indoor heat exchangers being connected in parallel and multiple solenoid valves, and multiple solenoid valves are changed with corresponding interior respectively
The inlet and outlet of hot device connects；Multi-connected air conditioning system further includes controller, and controller is for controlling opening for multiple solenoid valves
It closes, with when multiple solenoid valves are closed, corresponding indoor heat exchanger forbids heat exchange operation, to reduce multi-connected air conditioning system
Load.
Specifically, outdoor unit includes that compressor, four-way reversing valve, outdoor heat exchanger, outdoor fan, electric expansion valve are gentle
Liquid/gas separator, indoor unit include multiple indoor heat exchangers, multiple solenoid valves, throttle part and indoor fan；Indoor unit it is multiple
Indoor heat exchanger is connected in parallel, and the inlet and outlet of wherein at least one indoor heat exchanger is separately connected solenoid valve, multiple interiors
Heat exchanger is connected to the first port of four-way reversing valve through throttle part, and the second port of four-way reversing valve connects through gas-liquid separator
Connect the gas returning port of compressor, the third port of the exhaust outlet connection four-way reversing valve of compressor, the 4th port of four-way reversing valve
Outdoor heat exchanger is connected, outdoor heat exchanger also connects multiple indoor heat exchangers through electric expansion valve；The multi-connected air conditioning system is also
Including controller, controller is used to control the opening and closing of solenoid valve, to control the operation of indoor heat exchanger, to adjust multiple air conditioner
The load of adjusting system avoids multi-connected air conditioning system overload operation.
Optionally, implement in example one, multi-connected air conditioning system includes an outdoor unit and two indoor units, wherein each
Indoor unit includes two indoor heat exchangers (the first indoor heat exchanger and the second indoor heat exchanger) and an indoor fan, such as
Shown in Fig. 1 and Fig. 2, indoor heat exchanger 211, the indoor heat exchanger 212 of indoor unit are connected in parallel, and indoor fan 216 is relatively indoor
Heat exchanger 211 and indoor heat exchanger 212 are arranged, and the inlet and outlet of indoor heat exchanger 212 is separately connected solenoid valve 213 and electromagnetism
Valve 214；Indoor heat exchanger 221, the indoor heat exchanger 222 of an other indoor unit are connected in parallel, and the interior relatively of indoor fan 226 is changed
Hot device 221 and indoor heat exchanger 222 are arranged, and the inlet and outlet of indoor heat exchanger 222 is separately connected solenoid valve 223 and solenoid valve
224；Indoor heat exchanger 211 and indoor heat exchanger 212 are through throttle part 215 and indoor heat exchanger 221 and indoor heat exchanger
222, through throttle part 225, are connected to the first port of four-way reversing valve 22, the second port of four-way reversing valve 22 is through gas-liquid point
Gas returning port from 26 connect compressor 21 of device, the third port of the exhaust outlet connection four-way reversing valve 22 of compressor 21, four-way change
Outdoor heat exchanger 23 is connected to the 4th port of valve 22, outdoor heat exchanger 23 also connects indoor heat exchanger through electric expansion valve 25
211, indoor heat exchanger 212 and indoor heat exchanger 221 and indoor heat exchanger 222；Multi-connected air conditioning system further includes controller
(not shown), controller are used to control the opening and closing of solenoid valve 213, solenoid valve 214 and solenoid valve 223, solenoid valve 224,
To control the operation of indoor heat exchanger 212, indoor heat exchanger 222, to adjust the load of multi-connected air conditioning system, avoid multi-joint
Formula air-conditioning system overload operation.
Optionally, when multi-connected air conditioning system is run, in real time or timing detects the current operation of multi-connected air conditioning system
Status information, wherein the running state information of multi-connected air conditioning system includes but is not limited to normal refrigeration, cryogenic refrigeration, high temperature
Refrigeration, normal heating, low-temperature heating etc..
After detecting the current running state information of multi-connected air conditioning system, according to the running state information, determine
The open and-shut mode information that solenoid valve 213, solenoid valve 214 and solenoid valve 223, solenoid valve 224 are currently suitable for.Wherein, for more
The different running state information of connection formula air-conditioning system, corresponding solenoid valve 213, solenoid valve 214 and solenoid valve 223, solenoid valve 224
Different open and-shut mode information.
Later, it is opened according to determining solenoid valve 213, solenoid valve 214 and solenoid valve 223, solenoid valve 224 are currently suitable
Closed state information, control solenoid valve 213, solenoid valve 214 and solenoid valve 223, solenoid valve 224 turn on or off.
For example, controlling solenoid valve 213, solenoid valve 214 if detecting the current cryogenic refrigeration operation of multi-connected air conditioning system
And solenoid valve 223, solenoid valve 224 are closed, namely control indoor heat exchanger 212 and indoor heat exchanger 222 are not run, and are only passed through
Indoor heat exchanger 211 and the operation of indoor heat exchanger 221 not only reduce the load of multi-connected air conditioning system to freeze, and
And the actual refrigerating capacity due to reducing multi-connected air conditioning system, multi-connected air conditioning system is avoided due to frequently reaching set temperature
And it shuts down.
For another example, if detecting the current high-temperature refrigeration operation of multi-connected air conditioning system, solenoid valve 213, solenoid valve 214 are controlled
And solenoid valve 223, solenoid valve 224 are closed, namely control indoor heat exchanger 212 and indoor heat exchanger 222 are not run, and are only passed through
Indoor heat exchanger 211 and the operation of indoor heat exchanger 221 are to freeze, to reduce the practical refrigeration of multi-connected air conditioning system
Amount, is reduced the load of multi-connected air conditioning system, multi-connected air conditioning system is avoided to be influenced its reliability due to excess load.
For another example, if detect the current heating operation of multi-connected air conditioning system and heating duration corresponding preset duration with
It is interior, then control solenoid valve 213, solenoid valve 214 and solenoid valve 223, the closing of solenoid valve 224, namely control indoor heat exchanger 212
It is not run with indoor heat exchanger 222, is only freezed by indoor heat exchanger 211 and the operation of indoor heat exchanger 221, not only dropped
The low load of multi-connected air conditioning system, and the high-pressure of fast lifting multi-connected air conditioning system, to quickly be made
Heat.
For another example, if detecting the current low-temperature heating operation of multi-connected air conditioning system, solenoid valve 213, solenoid valve 214 are controlled
And solenoid valve 223, solenoid valve 224 are closed, namely control indoor heat exchanger 212 and indoor heat exchanger 222 are not run, and are only passed through
Indoor heat exchanger 211 and the operation of indoor heat exchanger 221 not only reduce the load of multi-connected air conditioning system to be heated, and
And the high-pressure of multi-connected air conditioning system is improved, to improve supply air temperature.
Scheme provided in this embodiment, the indoor unit of multi-connected air conditioning system include multiple indoor heat exchangers, at least one
The inlet and outlet of indoor heat exchanger is separately connected solenoid valve, indoor when solenoid valve is opened by controlling the opening and closing of solenoid valve
Heat exchanger operates normally；When solenoid valve is closed, indoor heat exchanger is not run, so that the load of multi-connected air conditioning system is adjusted,
Avoid multi-connected air conditioning system overload operation.This improves multi-connected air conditioning system reliabilities of operation.
The embodiment of the present invention also proposes a kind of control device of multi-connected air conditioning system.
Referring to Fig. 3, Fig. 3 is the control of the multi-connected air conditioning system for the hardware running environment that the embodiment of the present invention is related to
Apparatus structure schematic diagram.
In subsequent description, it is only using the suffix for indicating such as " module ", " component " or " unit " of element
Be conducive to explanation of the invention, itself there is no a specific meaning.Therefore, " module ", " component " or " unit " can mix
Ground uses.
As shown in figure 3, the control device of the multi-connected air conditioning system may include: processor 1001, communication bus 1002,
User interface 1003, network interface 1004, memory 1005.Wherein, communication bus 1002 is for realizing between these components
Connection communication.User interface 1003 may include display screen (Display), input unit such as keyboard (Keyboard), optional
User interface 1003 can also include standard wireline interface and wireless interface.Network interface 1004 optionally may include standard
Wireline interface, wireless interface (such as WI-FI interface).Memory 1005 can be high speed RAM memory, be also possible to stable
Memory (non-volatile memory), such as magnetic disk storage.Memory 1005 optionally can also be independently of aforementioned
The storage device of processor 1001.
It will be understood by those skilled in the art that the control device structure of multi-connected air conditioning system shown in Fig. 3 not structure
The restriction of the control device of pairs of multi-connected air conditioning system may include components more more or fewer than diagram, or combine certain
A little components or different component layouts.
As shown in figure 3, as may include that operating system, network are logical in a kind of memory 1005 of computer storage medium
Believe that module and multi-connected air conditioning system control program.
In the present invention, the control device of multi-connected air conditioning system is called by processor 1001 to be stored in memory 1005
Household electric equipment communication program, and execute following operation:
Detect the current running state information of the multi-connected air conditioning system；
Information according to the operation state determines the open and-shut mode information that the solenoid valve is currently suitable for；
According to the open and-shut mode information, the solenoid valve opening and closing is controlled.
Further, processor 1001 can call the multi-connected air conditioning system stored in memory 1005 to control program,
Also execute following operation:
When the running state information is cryogenic refrigeration, the open and-shut mode information for determining that the solenoid valve is currently suitable for is
It closes.
Further, processor 1001 can call the multi-connected air conditioning system stored in memory 1005 to control program,
Also execute following operation:
When the running state information is high-temperature refrigeration, the open and-shut mode information for determining that the solenoid valve is currently suitable for is
It closes.
Further, processor 1001 can call the multi-connected air conditioning system stored in memory 1005 to control program,
Also execute following operation:
When the running state information is high-temperature refrigeration, the return-air degree of superheat of the multi-connected air conditioning system is detected；
When the return-air degree of superheat is greater than default degree of superheat threshold value, the open and-shut mode that the solenoid valve is currently suitable for is determined
Information is to close.
Further, processor 1001 can call the multi-connected air conditioning system stored in memory 1005 to control program,
Also execute following operation:
When the running state information is heating and heating duration is less than preset duration threshold value, determine that the solenoid valve is worked as
Preceding suitable open and-shut mode information is to close.
Further, processor 1001 can call the multi-connected air conditioning system stored in memory 1005 to control program,
Also execute following operation:
When the running state information is low-temperature heating, the open and-shut mode information for determining that the solenoid valve is currently suitable for is
It closes.
Through the above scheme, the indoor unit of multi-connected air conditioning system includes multiple indoor heat exchangers, at least one to the present embodiment
The inlet and outlet of a indoor heat exchanger is separately connected solenoid valve, passes through the operating condition according to multi-connected air conditioning system, control
The opening and closing of solenoid valve, when solenoid valve is opened, respective chambers heat exchanger is operated normally, and when solenoid valve is closed, respective chambers are changed
Hot device is not run, so that the load of multi-connected air conditioning system is reduced, without avoiding multi-connected air conditioning system by shutting down
Overload operation, this improves multi-connected air conditioning system reliabilities of operation.
Based on above-mentioned hardware configuration, the control method embodiment of multi-connected air conditioning system of the present invention is proposed.
It is the flow diagram of the control method first embodiment of multi-connected air conditioning system of the present invention referring to Fig. 4, Fig. 4.
In the first embodiment, multi-connected air conditioning system is multi-connected air conditioning system described in above-described embodiment, described
The control method of multi-connected air conditioning system the following steps are included:
Step S10 detects the current running state information of the multi-connected air conditioning system；
Step S20, information, determines the open and-shut mode information that the solenoid valve is currently suitable for according to the operation state；
Step S30 controls the solenoid valve opening and closing according to the open and-shut mode information.
Now, multi-connected air conditioning system generally includes indoor unit and outdoor unit, and the quantity of outdoor unit is usually one or one
More than a, the quantity of indoor unit is usually multiple, and each indoor unit includes an indoor heat exchanger, carries out indoor heat exchange and realizes
Heating/refrigeration.In some cases when system excess load, multi-connected air conditioning system is avoided generally by outdoor unit is closed
Overload operation, namely shut down, this, which has resulted in multi-connected air conditioning system, can not continue refrigerating/heating, therefore, multi-connected air conditioner
System reliability of operation is to be improved.
In order to improve multi-connected air conditioning system reliability of operation, the present invention proposes a kind of control of multi-connected air conditioning system
Method, in this embodiment, multi-connected air conditioning system are multi-connected air conditioning system described in above-described embodiment, indoor unit packet
Multiple indoor heat exchangers are included, multiple indoor heat exchangers are connected in parallel, the inlet and outlet point of wherein at least one indoor heat exchanger
It Lian Jie not solenoid valve.For example, as shown in Figure 1, indoor unit includes two indoor heat exchangers, the import of one of indoor heat exchanger
Solenoid valve is separately connected with outlet.
Optionally, when multi-connected air conditioning system is run, in real time or timing detects the current operation of multi-connected air conditioning system
Status information, wherein the running state information of multi-connected air conditioning system includes but is not limited to normal refrigeration, cryogenic refrigeration, high temperature
Refrigeration, normal heating, low-temperature heating etc..
After detecting the current running state information of multi-connected air conditioning system, according to the running state information, determine
The open and-shut mode information that solenoid valve is currently suitable for.Wherein, the running state information different for multi-connected air conditioning system, corresponding electricity
The different open and-shut mode information of magnet valve.
For example, preset under various running state informations with the mapping relations of corresponding solenoid valve open and-shut mode information, such as
The normal corresponding solenoid valve that freezes is opened, and cryogenic refrigeration corresponds to solenoid valve closing etc..Detecting that multi-connected air conditioning system is current
Running state information after, usually inquire under preset various running state informations with corresponding solenoid valve open and-shut mode information
Mapping relations determine solenoid valve open and-shut mode information corresponding to the current running state information of multi-connected air conditioning system, namely
Determine the open and-shut mode information that solenoid valve is currently suitable for.
Later, the open and-shut mode information for being currently suitable for according to determining solenoid valve controls multiple solenoid valves and beats on or off
It closes.Such as, however, it is determined that the solenoid valve open and-shut mode information that is currently suitable for close, and current multiple solenoid valves are open shape
State then controls and closes multiple solenoid valves.For another example, however, it is determined that the solenoid valve open and-shut mode information that is currently suitable for open, and work as
Preceding multiple solenoid valves are in off state, then control and open multiple solenoid valves.If it is determined that the solenoid valve open and-shut mode that is currently suitable for
Information is to open, and current multiple solenoid valves are in an open state, then controls and multiple solenoid valves is maintained to open.If it is determined that solenoid valve
Currently suitable open and-shut mode information is to close, and current multiple solenoid valves are in off state, then controls and maintain multiple solenoid valves
It closes.
Scheme provided in this embodiment, the indoor unit of multi-connected air conditioning system include multiple indoor heat exchangers, at least one
The inlet and outlet of indoor heat exchanger is separately connected solenoid valve, passes through the operating condition according to multi-connected air conditioning system, control electricity
The opening and closing of magnet valve, when solenoid valve is opened, respective chambers heat exchanger is operated normally, when solenoid valve is closed, respective chambers heat exchange
Device is not run, so that the load of multi-connected air conditioning system is reduced, without avoiding multi-connected air conditioning system super by shutting down
Load operation, this improves multi-connected air conditioning system reliabilities of operation.
Further, the control method second embodiment of multi-connected air conditioning system of the present invention is proposed based on first embodiment,
In the present embodiment, control of the multi-connected air conditioning system under a variety of operating statuses such as heating, refrigeration is directed to be situated between in detail
It continues.
Scene one: in multi-connected air conditioning system cryogenic refrigeration operation, optionally, the step S20 includes:
Step a determines the open and-shut mode that the solenoid valve is currently suitable for when the running state information is cryogenic refrigeration
Information is to close.
Optionally, when detecting multi-connected air conditioning system cryogenic refrigeration operation, for example multi-connected air conditioning system is in environment temperature
Degree is lower than refrigeration mode is run in the environment of preset temperature when, the open and-shut mode information that solenoid valve is currently suitable for is determined to close.
Wherein, which can carry out flexible setting according to the actual situation, and it is 18 degree that the preset temperature, which is such as arranged, for preset temperature
Specific value and with no restrictions.
Later, control solenoid valve is closed, for example, still by taking the multi-connected air conditioning system of Fig. 2 as an example, control solenoid valve 213, electricity
Magnet valve 214 and solenoid valve 223, solenoid valve 224 are closed, and indoor heat exchanger 212 and indoor heat exchanger 222 do not run, only pass through
Indoor heat exchanger 211 and the operation of indoor heat exchanger 221 not only reduce the load of multi-connected air conditioning system to freeze, and
And the actual refrigerating capacity due to reducing multi-connected air conditioning system, avoiding leads to outdoor unit since indoor unit reaches set temperature
Frequent shutdown.
Scene two: in the operation of multi-connected air conditioning system high-temperature refrigeration, optionally, the step S20 includes:
Step b determines the open and-shut mode that the solenoid valve is currently suitable for when the running state information is high-temperature refrigeration
Information is to close.
Optionally, when detecting the operation of multi-connected air conditioning system high-temperature refrigeration, indoor environment temperature is higher will cause it is more
Connection formula air-conditioning system load is larger, at this point, determining the open and-shut mode information that solenoid valve is currently suitable for close, later, control is electric
Magnet valve is closed.For example, still by taking the multi-connected air conditioning system of Fig. 2 as an example, control solenoid valve 213, solenoid valve 214 and solenoid valve
223, solenoid valve 224 is closed, and indoor heat exchanger 212 and indoor heat exchanger 222 are not run, and only passes through indoor heat exchanger 211 and room
The interior operation of heat exchanger 221, to reduce the actual refrigerating capacity of multi-connected air conditioning system, reduces multi-connected air conditioner to freeze
The load of system, avoids multi-connected air conditioning system from influencing its reliability due to excess load.
Optionally, the step b includes:
Step b1 detects the return-air mistake of the multi-connected air conditioning system when the running state information is high-temperature refrigeration
Temperature；
Step b2 determines that the solenoid valve is currently suitable for when the return-air degree of superheat is greater than default degree of superheat threshold value
Open and-shut mode information is to close.
Optionally, in order to control multi-connected air conditioning system more accurately, avoid multi-connected air conditioning system due to
Excess load and influence its reliability, be directed to the return-air degree of superheat of compressor in air-conditioning system in advance, setting was preset accordingly
Heat degree threshold, such as presetting the default degree of superheat threshold value is 15 degree, it is to be understood that the default degree of superheat threshold value can basis
The concrete condition of multi-connected air conditioning system carries out flexible setting.
When detecting the operation of multi-connected air conditioning system high-temperature refrigeration, indoor environment temperature is higher to will cause multi-connected air conditioner
System loading is larger, and the return-air degree of superheat of compressor is higher in multi-connected air conditioning system, at this point, in detection multi-connected air conditioning system
The current return-air degree of superheat of compressor, and the detected return-air degree of superheat is compared with default degree of superheat threshold value.If inspection
The return-air degree of superheat measured is greater than default degree of superheat threshold value, at this point, determining the open and-shut mode information that solenoid valve is currently suitable for close
It closes, later, control solenoid valve is closed.Conversely, if the return-air degree of superheat detected is less than default degree of superheat threshold value, at this point, not into
Row response processing.
Scene three: in the normal refrigerating operaton of multi-connected air conditioning system, optionally, the step S20 includes:
Step c determines the open and-shut mode that the solenoid valve is currently suitable for when the running state information is normal refrigeration
Information is to open.
Optionally, when the normal refrigerating operaton of detection multi-connected air conditioning system, the opening and closing shape that solenoid valve is currently suitable for is determined
State information is to open, and later, control solenoid valve is opened.For example, controlling solenoid valve still by taking the multi-connected air conditioning system of Fig. 2 as an example
213, solenoid valve 214 and solenoid valve 223, solenoid valve 224 are opened, indoor heat exchanger 211, indoor heat exchanger 212, indoor heat exchange
Device 221 and indoor heat exchanger 222 are run, and pass through indoor heat exchanger 211, indoor heat exchanger 212, indoor heat exchanger 221 and interior
Heat exchanger 222 runs to freeze.
Scene four: in the normal heating operation of multi-connected air conditioning system, optionally, the step S20 includes:
Step d determines the open and-shut mode that the solenoid valve is currently suitable for when the running state information is normal heating
Information is to open.
Optionally, when the normal heating operation of detection multi-connected air conditioning system, the opening and closing shape that solenoid valve is currently suitable for is determined
State information is to open, and later, control solenoid valve is opened.For example, controlling solenoid valve still by taking the multi-connected air conditioning system of Fig. 2 as an example
213, solenoid valve 214 and solenoid valve 223, solenoid valve 224 are opened, indoor heat exchanger 211, indoor heat exchanger 212, indoor heat exchange
Device 221 and indoor heat exchanger 222 are run, and pass through indoor heat exchanger 211, indoor heat exchanger 212, indoor heat exchanger 221 and interior
Heat exchanger 222 runs to be heated.
Scene five: within beginning a period of time that multi-connected air conditioning system opens heating operation, optionally, the step
S20 includes:
Step e determines the electricity when the running state information is heating and heating duration is less than preset duration threshold value
The open and-shut mode information that magnet valve is currently suitable for is to close.
Optionally, when the current heating operation of detection multi-connected air conditioning system and its heat duration and be less than preset duration threshold value
When, the open and-shut mode information that solenoid valve is currently suitable for is determined to close.Wherein, which can be according to multi-connected air conditioner
The concrete conditions such as system and its environment being presently in carry out flexible setting.Optionally, the value of the preset duration threshold value is set
Range is 3-5 minutes.
Later, control solenoid valve is closed.For example, still by taking the multi-connected air conditioning system of Fig. 2 as an example, control solenoid valve 213, electricity
Magnet valve 214 and solenoid valve 223, solenoid valve 224 are closed, and indoor heat exchanger 212 and indoor heat exchanger 222 do not run, only pass through
Indoor heat exchanger 211 and the operation of indoor heat exchanger 221 not only reduce the load of multi-connected air conditioning system to freeze, and
And the high-pressure of fast lifting multi-connected air conditioning system improves the usage experience of user to quickly be heated.
Further, the high-pressure of multi-connected air conditioning system is detected, when the height of detection multi-connected air conditioning system
When pressure pressure is greater than preset pressure threshold value, control solenoid valve is opened, and carries out normal heating operation.
Further, the frequency of compressor in multi-connected air conditioning system is detected, when detection multi-connected air conditioning system
When the frequency of middle compressor is higher than predeterminated frequency threshold value, control solenoid valve is opened, and carries out normal heating operation.
Scene six: in the operation of multi-connected air conditioning system low-temperature heating, optionally, the step S20 includes:
Step f determines the open and-shut mode that the solenoid valve is currently suitable for when the running state information is low-temperature heating
Information is to close.
Optionally, when detecting the operation of multi-connected air conditioning system low-temperature heating, the high-pressure of multi-connected air conditioning system compared with
Low, it is low or the protection of anti-cold wind occur that indoor unit is likely to occur supply air temperature, multi-joint when detecting in order to avoid the appearance of these problems
When formula air-conditioning system low-temperature heating is run, determine that the open and-shut mode information that solenoid valve is currently suitable for close, later, controls electromagnetism
Valve is closed.For example, still by taking the multi-connected air conditioning system of Fig. 2 as an example, control solenoid valve 213, solenoid valve 214 and solenoid valve 223,
Solenoid valve 224 is closed, and indoor heat exchanger 212 and indoor heat exchanger 222 are not run, and is only changed by indoor heat exchanger 211 and interior
The hot operation of device 221 not only reduces the load of multi-connected air conditioning system, and improve multi-connected air conditioning system to be heated
High-pressure, to improve supply air temperature.
Optionally, corresponding preset high-pressure pressure threshold is preset, it is 2MPa that the preset high-pressure pressure threshold, which is such as arranged,
In the present embodiment with no restrictions to the specific value of the preset high-pressure pressure threshold, flexible setting can be carried out according to the actual situation.
When detecting the operation of multi-connected air conditioning system low-temperature heating, the high-pressure of multi-connected air conditioning system is detected, and will be detected
High-pressure be compared with preset high-pressure pressure threshold, if the high-pressure detected be less than preset high-pressure pressure threshold,
At this point, indoor unit is likely to occur, supply air temperature is low or the anti-cold wind protection of appearance, in order to avoid the appearance of these problems, control electromagnetism
Valve is closed.Thus the high-pressure for improving multi-connected air conditioning system, to improve supply air temperature.
Scheme provided in this embodiment passes through opening for control solenoid valve under multi-connected air conditioning system difference operating status
It closes, avoid causes outdoor unit frequent shutdown, multi-connected air conditioning system due to excess load since indoor unit reaches set temperature
And the appearance of its integrity problem is influenced, realize quickly heating, improve supply air temperature and other effects, this improves user's body
It tests.
The present invention also provides a kind of computer readable storage medium, the computer-readable recording medium storage has multi-joint
Formula Air-condition system control program, the multi-connected air conditioning system control program can be executed by one or more than one processor
To be used for:
Detect the current running state information of the multi-connected air conditioning system；
Information according to the operation state determines the open and-shut mode information that the solenoid valve is currently suitable for；
According to the open and-shut mode information, the solenoid valve opening and closing is controlled.
Further, following operation is also realized when the multi-connected air conditioning system control program is executed by processor:
When the running state information is cryogenic refrigeration, the open and-shut mode information for determining that the solenoid valve is currently suitable for is
It closes.
Further, following operation is also realized when the multi-connected air conditioning system control program is executed by processor:
When the running state information is high-temperature refrigeration, the open and-shut mode information for determining that the solenoid valve is currently suitable for is
It closes.
Further, following operation is also realized when the multi-connected air conditioning system control program is executed by processor:
When the running state information is high-temperature refrigeration, the return-air degree of superheat of the multi-connected air conditioning system is detected；
When the return-air degree of superheat is greater than default degree of superheat threshold value, the open and-shut mode that the solenoid valve is currently suitable for is determined
Information is to close.
Further, following operation is also realized when the multi-connected air conditioning system control program is executed by processor:
When the running state information is heating and heating duration is less than preset duration threshold value, determine that the solenoid valve is worked as
Preceding suitable open and-shut mode information is to close.
Further, following operation is also realized when the multi-connected air conditioning system control program is executed by processor:
When the running state information is low-temperature heating, the open and-shut mode information for determining that the solenoid valve is currently suitable for is
It closes.
Through the above scheme, the indoor unit of multi-connected air conditioning system includes multiple indoor heat exchangers, at least one to the present embodiment
The inlet and outlet of a indoor heat exchanger is separately connected solenoid valve, passes through the operating condition according to multi-connected air conditioning system, control
The opening and closing of solenoid valve, when solenoid valve is opened, respective chambers heat exchanger is operated normally, and when solenoid valve is closed, respective chambers are changed
Hot device is not run, so that the load of multi-connected air conditioning system is adjusted, without avoiding multi-connected air conditioning system by shutting down
Overload operation, this improves multi-connected air conditioning system reliabilities of operation.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the system that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or system institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or 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.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server or network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of multi-connected air conditioning system, including at least one outdoor unit and multiple indoor units, which is characterized in that the indoor unit
Including multiple indoor heat exchangers being connected in parallel and multiple solenoid valves, the multiple solenoid valve respectively with the corresponding room
The inlet and outlet of interior heat exchanger connects；The multi-connected air conditioning system further includes controller, and the controller is for controlling institute
The opening and closing of multiple solenoid valves is stated, with when the multiple solenoid valve is closed, the corresponding indoor heat exchanger forbids heat exchange operation,
Reduce the load of the multi-connected air conditioning system.
2. multi-connected air conditioning system as described in claim 1, which is characterized in that the multiple indoor heat exchanger being connected in parallel
Including the first indoor heat exchanger and the second indoor heat exchanger, the multiple solenoid valve includes the first solenoid valve and second solenoid valve,
The inlet and outlet of second indoor heat exchanger is separately connected first solenoid valve and the second solenoid valve；The control
Device is used to control first solenoid valve and the second solenoid valve turns on or off.
3. a kind of control method of multi-connected air conditioning system, which is characterized in that the multi-connected air conditioning system is claim 1 institute
The multi-connected air conditioning system stated, the control method of the multi-connected air conditioning system the following steps are included:
Detect the current running state information of the multi-connected air conditioning system；
Information according to the operation state determines the open and-shut mode information that the solenoid valve is currently suitable for；
According to the open and-shut mode information, the solenoid valve opening and closing is controlled.
4. the control method of multi-connected air conditioning system as claimed in claim 3, which is characterized in that described according to the operation shape
State information, the step of determining the open and-shut mode information that the solenoid valve is currently suitable for include:
When the running state information is cryogenic refrigeration, the open and-shut mode information that the solenoid valve is currently suitable for is determined to close
It closes.
5. the control method of multi-connected air conditioning system as claimed in claim 3, which is characterized in that described according to the operation shape
State information, the step of determining the open and-shut mode information that the solenoid valve is currently suitable for include:
When the running state information is high-temperature refrigeration, the open and-shut mode information that the solenoid valve is currently suitable for is determined to close
It closes.
6. the control method of multi-connected air conditioning system as claimed in claim 5, which is characterized in that described to work as the operating status
When information is high-temperature refrigeration, the open and-shut mode information that the solenoid valve is currently suitable for is determined to include: the step of closing
When the running state information is high-temperature refrigeration, the return-air degree of superheat of the multi-connected air conditioning system is detected；
When the return-air degree of superheat is greater than default degree of superheat threshold value, the open and-shut mode information that the solenoid valve is currently suitable for is determined
To close.
7. the control method of multi-connected air conditioning system as claimed in claim 3, which is characterized in that described according to the operation shape
State information, the step of determining the open and-shut mode information that the solenoid valve is currently suitable for include:
When the running state information is heating and heating duration is less than preset duration threshold value, determine that the solenoid valve is currently fitted
Suitable open and-shut mode information is to close.
8. the control method of multi-connected air conditioning system as claimed in claim 3, which is characterized in that described according to the operation shape
State information, the step of determining the open and-shut mode information that the solenoid valve is currently suitable for include:
When the running state information is low-temperature heating, the open and-shut mode information that the solenoid valve is currently suitable for is determined to close
It closes.
9. a kind of control device of multi-connected air conditioning system, which is characterized in that the control device packet of the multi-connected air conditioning system
It includes: memory, processor and being stored in the multi-connected air conditioning system control that can be run on the memory and on the processor
Processing procedure sequence；The multi-connected air conditioning system control program is realized when being executed by the processor such as any one of claim 3-8
The step of control method of the multi-connected air conditioning system.
10. a kind of computer readable storage medium, which is characterized in that be stored with multiple on the computer readable storage medium
Air-condition system control program, the multi-connected air conditioning system control program are realized when being executed by processor as in claim 3-8
The step of control method of described in any item multi-connected air conditioning systems.
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