CN107763889A - A kind of multi-online air-conditioning system and its control method - Google Patents
A kind of multi-online air-conditioning system and its control method Download PDFInfo
- Publication number
- CN107763889A CN107763889A CN201711163343.XA CN201711163343A CN107763889A CN 107763889 A CN107763889 A CN 107763889A CN 201711163343 A CN201711163343 A CN 201711163343A CN 107763889 A CN107763889 A CN 107763889A
- Authority
- CN
- China
- Prior art keywords
- valve
- expansion valve
- indoor
- aperture
- way reversing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
Abstract
The invention provides a kind of multi-online air-conditioning system and its control method, is related to multi-gang air-conditioner technical field.In the multi-online air-conditioning system, the both ends of compressor are connected respectively to the A mouths and C mouths of four-way reversing valve.One end of by-passing valve is connected on the pipeline between oil eliminator and four-way reversing valve, and the other end of by-passing valve is connected on the pipeline between gas separating device and four-way reversing valve.One end of outdoor heat exchanger is connected to the B mouths of four-way reversing valve, and the other end of outdoor heat exchanger is connected to the D mouths of four-way reversing valve by outdoor electrical expansion valve, indoor units successively.Indoor units include multiple indoor heat exchangers in parallel, and each indoor heat exchanger is connected with indoor electronic expansion valve.The indoor heat exchanger from heating mode enter shut down after, by opening the by-passing valve, can balance system pressure, weaken noise；By adjusting the aperture of indoor electronic expansion valve, indoor heat exchanger can be further avoided to heat the abnormal sound after stopping.
Description
Technical field
The present invention relates to multi-gang air-conditioner technical field, more particularly to a kind of multi-online air-conditioning system and its control method.
Background technology
At present, the throttling control of indoor set is realized by electric expansion valve in connected air conditioner system.Generally, room
After the various impotentia demands such as interior machine is shut down in temperature from heating mode to indoor set, protection is shut down, shutdown are shut down, the electricity of indoor set
Sub- expansion valve can all keep certain small guide vane, be balanced with adjusting the refrigerant of whole system operation.
But this mode due in indoor set also have refrigerant circulation, system pressure difference, circulation refrigerant state and electricity
Under the influence of the aperture size of sub- expansion valve, indoor set easily produces abnormal sound, particularly during load transition, noise
It is larger, influence the comfortable sexual experience of user.
Therefore, a kind of multi-online air-conditioning system and its control method are designed, can realize indoor set from heating mode to temperature
Noise or will not be less produced after shutdown, this is technical problem urgently to be resolved hurrily at present.
The content of the invention
In view of this, the present invention is directed to propose a kind of multi-online air-conditioning system and its control method, with realize indoor set from
Heating mode or will not less produce noise to after shutting down.
To reach above-mentioned purpose, what the first technical scheme of the invention was realized in：
It is swollen that a kind of multi-online air-conditioning system includes compressor, oil eliminator, gas separating device, outdoor heat exchanger, outdoor electrical
Swollen valve, indoor units, four-way reversing valve and by-passing valve；
One end of the compressor is connected to the A mouths of the four-way reversing valve, the compressor by the oil eliminator
The other end be connected to the C mouths of the four-way reversing valve by the gas separating device；
One end of the by-passing valve is connected on the pipeline between the oil eliminator and the four-way reversing valve, the side
The other end of port valve is connected on the pipeline between the gas separating device and the four-way reversing valve；
One end of the outdoor heat exchanger is connected to the B mouths of the four-way reversing valve, the other end of the outdoor heat exchanger
The D mouths of the four-way reversing valve are connected to by the outdoor electrical expansion valve, the indoor units successively；
The indoor units include multiple indoor heat exchangers in parallel, and each indoor heat exchanger is connected with indoor electronic
Expansion valve.
Further, the multi-online air-conditioning system also includes the first stop valve and the second stop valve, first cut-off
Valve is arranged on the pipeline between the outdoor electrical expansion valve and the indoor units, and second stop valve is arranged on described
On pipeline between indoor units and the four-way reversing valve.
Further, the multi-online air-conditioning system also includes high-voltage switch gear and low tension switch, and the high-voltage switch gear is set
On pipeline between the compressor and the oil eliminator, the low tension switch is arranged on the compressor and the qi leel
From on the pipeline between device.
Further, the multi-online air-conditioning system also includes check valve, and the check valve is arranged on the oil eliminator
On pipeline between the four-way reversing valve, the check valve allows fluid from the oil eliminator to the four-way reversing valve
Flowing.
To reach above-mentioned purpose, what second of technical scheme of the invention was realized in：
A kind of control method of multi-online air-conditioning system is used to control the multi-gang air-conditioner system described in the first technical scheme
System, methods described are used for the indoor heat exchanger after heating mode enters shutdown, and methods described includes：
The indoor electronic expansion valve being connected for the indoor heat exchanger with entering from heating mode after shutting down, control
Make its closing；
Open the by-passing valve；
The state of judgement system refrigerant operation；
If refrigerant exceedes overload quantity, the indoor electronic expansion valve being turned off is controlled to continue to close；
If refrigerant is less than predetermined amount, tunes up the aperture of the indoor electronic expansion valve and be no more than maximum magnitude
EXVb。
Further, the unlatching by-passing valve includes：Open the by-passing valve and maintain the first preset duration t1.
Further, the state of the judgement system refrigerant operation includes：
The high pressure values Pc of detecting system, low pressure values Ps, suction temperature Ti and the outdoor electrical expansion valve are opened
Spend EXV；
The high pressure values Pc is converted into the first saturation temperature Tc, the low pressure values Ps is converted into the second saturation temperature
Spend Ts；
Calculate suction superheat Tsh, the suction superheat Tsh and be equal to the second saturation temperature Ts and the air-breathing temperature
Spend Ti difference；
If the aperture EXV of the outdoor electrical expansion valve is less than or equal to minimum default aperture and the suction superheat
Tsh is less than or equal to the first default degree of superheat Δ T1, then judges that refrigerant exceedes overload quantity；
If the aperture EXV of the outdoor electrical expansion valve is more than maximum preset aperture and the suction superheat Tsh is more than
Second default degree of superheat Δ T2, then judge that refrigerant is less than predetermined amount.
Further, the state of the judgement system refrigerant operation includes：
The high pressure values Pc of detecting system, low pressure values Ps, suction temperature Ti and the outdoor electrical expansion valve are opened
Spend EXV；
The high pressure values Pc is converted into the first saturation temperature Tc, the low pressure values Ps is converted into the second saturation temperature
Spend Ts；
Calculate suction superheat Tsh, the suction superheat Tsh and be equal to the second saturation temperature Ts and the air-breathing temperature
Spend Ti difference；
If the first saturation temperature Tc is more than or equal to preset temperature, judge that refrigerant exceedes overload quantity；
If the aperture EXV of the outdoor electrical expansion valve is more than maximum preset aperture and the suction superheat Tsh is more than
Second default degree of superheat Δ T2, then judge that refrigerant is less than predetermined amount.
Further, between the state for opening the by-passing valve and judgement system refrigerant operation, in addition to：
The second preset duration of outdoor heat exchanger continuous service t2.
Further, the aperture for tuning up the indoor electronic expansion valve includes：
The aperture for the indoor electronic expansion valve being partly or entirely turned off is tuned up, and/or, tune up partly or entirely not
The aperture for the indoor electronic expansion valve closed.
Relative to prior art, multi-online air-conditioning system of the present invention and its control method have the advantage that：
1. multi-online air-conditioning system of the present invention and its control method, the indoor heat exchanger enters from heating mode
After shutdown, shutting down here shuts down for temperature, protects shutdown, shutdown etc. to stop any of load transition state, by opening
State by-passing valve, can balance system pressure, weaken noise.
2. if refrigerant exceedes overload quantity, control the indoor electronic expansion valve being turned off to continue to close, can reduce
Refrigerant；If refrigerant is less than predetermined amount, the aperture of the indoor electronic expansion valve is tuned up, by increasing capacitance it is possible to increase refrigerant, so as to keep whole
The balance of individual system refrigerant operation, can effectively avoid indoor heat exchanger from heating the abnormal sound after stopping, improve the comfortable of user
Experience Degree.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of the multi-online air-conditioning system described in the embodiment of the present invention；
Fig. 2 is the FB(flow block) of the control method of the multi-online air-conditioning system described in the embodiment of the present invention；
Fig. 3 is the first FB(flow block) of the state of judgement system refrigerant operation；
Fig. 4 is second of FB(flow block) of the state of judgement system refrigerant operation.
Icon：100- multi-online air-conditioning systems；1- compressors；2- oil eliminators；3- by-passing valves；4- gas separating devices；5- tetra-
Logical reversal valve；6- outdoor heat exchangers；7- outdoor electrical expansion valves；The stop valves of 8- first；9- indoor electronic expansion valves；In 10- rooms
Heat exchanger；The stop valves of 11- second；12- high-voltage switch gears；13- low tension switches；14- check valves.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Referring to Fig. 1, the present embodiment provides a kind of multi-online air-conditioning system 100, multi-online air-conditioning system 100 includes compression
Machine 1, oil eliminator 2, gas separating device 4, outdoor heat exchanger 6, outdoor electrical expansion valve 7, indoor units, four-way reversing valve 5, bypass
Valve 3, the first stop valve 8, the second stop valve 11, high-voltage switch gear 12, low tension switch 13 and check valve 14.
One end of compressor 1 is connected to the A mouths of four-way reversing valve 5 by oil eliminator 2, and the other end of compressor 1 passes through
Gas separating device 4 is connected to the C mouths of four-way reversing valve 5.
One end of by-passing valve 3 is connected on the pipeline between oil eliminator 2 and four-way reversing valve 5, the other end of by-passing valve 3
It is connected on the pipeline between gas separating device 4 and four-way reversing valve 5.
One end of outdoor heat exchanger 6 is connected to the B mouths of four-way reversing valve 5, and the other end of outdoor unit is successively by outdoor electricity
Sub- expansion valve 7, indoor units are connected to the D mouths of four-way reversing valve 5.
Indoor units include multiple indoor heat exchangers 10 in parallel, and each indoor heat exchanger 10 is connected with indoor electronic expansion
Valve 9.In the present embodiment, the quantity of indoor heat exchanger 10 is four.
First stop valve 8 is disposed in the outdoor on the pipeline between electric expansion valve 7 and indoor units, and the second stop valve 11 is set
Put on the pipeline between unit indoors and four-way reversing valve 5.
High-voltage switch gear 12 is arranged on the pipeline between compressor 1 and oil eliminator 2, and low tension switch 13 is arranged on compressor
On pipeline between 1 and gas separating device 4.
Check valve 14 is arranged on the pipeline between oil eliminator 2 and four-way reversing valve 5, and check valve 14 allows fluid from oil
Separator 2 flows to four-way reversing valve 5.
The refrigeration mode of multi-online air-conditioning system 100：The A mouths of four-way reversing valve 5 turn on B mouths, and C mouths turn on D mouths.Pressure
The refrigerating medium that contracting machine 1 exports flows to outdoor heat exchanger 6 after oil eliminator 2, by four-way reversing valve 5 and discharges heat, then passes through
Cross indoor units and absorb heat, then flow back to compressor 1 by four-way reversing valve 5, gas separating device 4 successively.
The heating mode of multi-online air-conditioning system 100：The A mouths of four-way reversing valve 5 turn on D mouths, and B mouths turn on C mouths.Pressure
The refrigerating medium that contracting machine 1 exports flows to indoor units release heat after oil eliminator 2, by four-way reversing valve 5, then by room
External heat exchanger 6 absorbs heat, then flows back to compressor 1 by four-way reversing valve 5, gas separating device 4 successively.
The present embodiment also provides the control method of above-mentioned multi-online air-conditioning system 100, and this method is used for indoor heat exchanger 10
Enter from heating mode after shutting down, the balance that whole system refrigerant can be kept to run, can effectively avoid indoor heat exchanger 10 from making
Heat stop after abnormal sound, improve the comfortable Experience Degree of user, shutdown here is shut down for temperature, protection is shut down, shutdown etc. stops
Open any of load transition state.
This method includes：
S1：The indoor electronic expansion valve 9 being connected for the indoor heat exchanger 10 with entering from heating mode after shutting down, control
It is closed.
S2：Open by-passing valve 3.
Referring to Fig. 1, after opening by-passing valve 3, the refrigerating medium that compressor 1 exports after oil eliminator 2, pressing by refrigerating medium
In the presence of power, by-passing valve 3 will be flowed directly into, then flows to gas separating device 4, flows back to compressor 1, so as to play balance pressure to system
The effect of power.
Specifically, open by-passing valve 3 and maintain the first preset duration t1, and it is pre- in the continuous service second of outdoor heat exchanger 6
If after duration t2, into S3.First preset duration t1 and the second preset duration t2 can flexibly be set according to actual condition.
S3：The state of judgement system refrigerant operation.
The mode of judgement includes two kinds, and the first judges the mode of the state of system refrigerant operation：
S31：The high pressure values Pc of detecting system, low pressure values Ps, suction temperature Ti and outdoor electrical expansion valve 7 are opened
Spend EXV.
S32：High pressure values Pc is converted into the first saturation temperature Tc, low pressure values Ps is converted into the second saturation temperature
Ts。
S33：Suction superheat Tsh is calculated, suction superheat Tsh is equal to the second saturation temperature Ts and suction temperature Ti difference
Value.
S341：If the aperture EXV of outdoor electrical expansion valve 7 is less than or equal to minimum default aperture and suction superheat Tsh
Degree of superheat Δ T1 default less than or equal to first, then judge that refrigerant exceedes overload quantity.
S35：If the aperture EXV of outdoor electrical expansion valve 7 is more than maximum preset aperture and suction superheat Tsh and is more than the
Two default degree of superheat Δ T2, then judge that refrigerant is less than predetermined amount.
In other embodiments, the sequencing for the step of judging the state of system refrigerant operation can adjust, for example,
S31 and S32 can synthesize a step, or, S32 and S33 can synthesize a step.S341 and S35 sequencing is not
Limit, can also be carried out simultaneously.
The mode of second of state for judging the operation of system refrigerant：
S31：The high pressure values Pc of detecting system, low pressure values Ps, suction temperature Ti and outdoor electrical expansion valve 7 are opened
Spend EXV.
S32：High pressure values Pc is converted into the first saturation temperature Tc, low pressure values Ps is converted into the second saturation temperature
Ts。
S33：Suction superheat Tsh is calculated, suction superheat Tsh is equal to the second saturation temperature Ts and suction temperature Ti difference
Value.
S342：If the first saturation temperature Tc is more than or equal to preset temperature, judge that refrigerant exceedes overload quantity.
S35：If the aperture EXV of outdoor electrical expansion valve 7 is more than maximum preset aperture and suction superheat Tsh and is more than the
Two default degree of superheat Δ T2, then judge that refrigerant is less than predetermined amount.
In other embodiments, the sequencing for the step of judging the state of system refrigerant operation can adjust, for example,
S31 and S32 can synthesize a step, or, S32 and S33 can synthesize a step.S342 and S35 sequencing is not
Limit, can also be carried out simultaneously.S342 and S33 sequencing is unlimited, can also carry out simultaneously.
S4：If refrigerant exceedes overload quantity, the indoor electronic expansion valve 9 being turned off is controlled to continue to close.
On the premise of by-passing valve 3 has balanced system pressure, the indoor electronic expansion valve 9 that is turned off continues closing can
The refrigerant for making it internal does not circulate, and corresponding indoor heat exchanger 10 does not work, and can reduce the generation of noise.
S5：If refrigerant is less than predetermined amount, tunes up the aperture of indoor electronic expansion valve 9 and be no more than maximum magnitude
EXVb。
Specifically, tuning up the aperture for the indoor electronic expansion valve 9 being partly or entirely turned off, part or complete can also be tuned up
The aperture for the indoor electronic expansion valve 9 that portion is not turned off.In a word, as long as the aperture for having indoor electric expansion valve 9 tunes up, use up refrigerant
It may be in the liquid of flowing, avoid the formation of gas-liquid mixture phase, you can reduce noise.
In addition, S1 and S2 can be merged into a step.S4 and S5 sequencing does not limit, and can also enter simultaneously
OK.
The multi-online air-conditioning system 100 and its control method that the present embodiment provides have the advantage that：
1. multi-online air-conditioning system 100 of the present invention and its control method, the indoor heat exchanger 10 is from heating mould
Formula enter shut down after, by opening the by-passing valve 3, can balance system pressure, weaken noise.
2. if refrigerant exceedes overload quantity, control the indoor electronic expansion valve 9 being turned off to continue to close, can reduce
Refrigerant；If refrigerant is less than predetermined amount, the aperture of the indoor electronic expansion valve 9 is tuned up, by increasing capacitance it is possible to increase refrigerant, so as to keep whole
The balance of individual system refrigerant operation, can effectively avoid indoor heat exchanger 10 from heating the abnormal sound after stopping, and improve relaxing for user
Suitable Experience Degree.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of multi-online air-conditioning system (100), it is characterised in that the multi-online air-conditioning system (100) includes compressor
(1), oil eliminator (2), gas separating device (4), outdoor heat exchanger (6), outdoor electrical expansion valve (7), indoor units, four-way commutation
Valve (5) and by-passing valve (3)；
One end of the compressor (1) is connected to the A mouths of the four-way reversing valve (5), the pressure by the oil eliminator (2)
The other end of contracting machine (1) is connected to the C mouths of the four-way reversing valve (5) by the gas separating device (4)；
One end of the by-passing valve (3) is connected on the pipeline between the oil eliminator (2) and the four-way reversing valve (5),
The other end of the by-passing valve (3) is connected on the pipeline between the gas separating device (4) and the four-way reversing valve (5)；
One end of the outdoor heat exchanger (6) is connected to the B mouths of the four-way reversing valve (5), the outdoor heat exchanger (6) it is another
One end is connected to the D mouths of the four-way reversing valve (5) by the outdoor electrical expansion valve (7), the indoor units successively；
The indoor units include multiple indoor heat exchangers (10) in parallel, and each indoor heat exchanger (10) is connected with interior
Electric expansion valve (9).
2. multi-online air-conditioning system (100) according to claim 1, it is characterised in that the multi-online air-conditioning system
(100) the first stop valve (8) and the second stop valve (11) are also included, first stop valve (8) is arranged on the outdoor electrical
On pipeline between expansion valve (7) and the indoor units, second stop valve (11) is arranged on the indoor units and institute
State on the pipeline between four-way reversing valve (5).
3. multi-online air-conditioning system (100) according to claim 2, it is characterised in that the multi-online air-conditioning system
(100) high-voltage switch gear (12) and low tension switch (13) are also included, the high-voltage switch gear (12) is arranged on the compressor (1) and institute
State on the pipeline between oil eliminator (2), the low tension switch (13) is arranged on the compressor (1) and the gas separating device
(4) on the pipeline between.
4. multi-online air-conditioning system (100) according to claim 3, it is characterised in that the multi-online air-conditioning system
(100) check valve (14) is also included, the check valve (14) is arranged on the oil eliminator (2) and the four-way reversing valve (5)
Between pipeline on, the check valve (14) allows fluid to be flowed from the oil eliminator (2) to the four-way reversing valve (5).
5. a kind of control method of multi-online air-conditioning system (100), it is characterised in that methods described is used to control claim 1
Described multi-online air-conditioning system (100), methods described are used for the indoor heat exchanger (10) after heating mode enters shutdown,
Methods described includes：
The indoor electronic expansion valve being connected for the indoor heat exchanger (10) with entering from heating mode after shutting down
(9) its closing, is controlled；
Open the by-passing valve (3)；
The state of judgement system refrigerant operation；
If refrigerant exceedes overload quantity, the indoor electronic expansion valve (9) being turned off is controlled to continue to close；
If refrigerant is less than predetermined amount, tunes up the aperture of the indoor electronic expansion valve (9) and be no more than maximum magnitude
EXVb。
6. according to the method for claim 5, it is characterised in that the unlatching by-passing valve (3) includes：Open the side
Port valve (3) simultaneously maintains the first preset duration t1.
7. according to the method for claim 6, it is characterised in that the state of the judgement system refrigerant operation includes：
The high pressure values Pc of detecting system, low pressure values Ps, the aperture of suction temperature Ti and the outdoor electrical expansion valve (7)
EXV；
The high pressure values Pc is converted into the first saturation temperature Tc, the low pressure values Ps is converted into the second saturation temperature
Ts；
Calculate suction superheat Tsh, the suction superheat Tsh and be equal to the second saturation temperature Ts and suction temperature Ti
Difference；
If the aperture EXV of the outdoor electrical expansion valve (7) is less than or equal to minimum default aperture and the suction superheat
Tsh is less than or equal to the first default degree of superheat Δ T1, then judges that refrigerant exceedes overload quantity；
If the aperture EXV of the outdoor electrical expansion valve (7) is more than maximum preset aperture and the suction superheat Tsh is more than
Second default degree of superheat Δ T2, then judge that refrigerant is less than predetermined amount.
8. according to the method for claim 6, it is characterised in that the state of the judgement system refrigerant operation includes：
The high pressure values Pc of detecting system, low pressure values Ps, the aperture of suction temperature Ti and the outdoor electrical expansion valve (7)
EXV；
The high pressure values Pc is converted into the first saturation temperature Tc, the low pressure values Ps is converted into the second saturation temperature
Ts；
Calculate suction superheat Tsh, the suction superheat Tsh and be equal to the second saturation temperature Ts and suction temperature Ti
Difference；
If the first saturation temperature Tc is more than or equal to preset temperature, judge that refrigerant exceedes overload quantity；
If the aperture EXV of the outdoor electrical expansion valve (7) is more than maximum preset aperture and the suction superheat Tsh is more than
Second default degree of superheat Δ T2, then judge that refrigerant is less than predetermined amount.
9. according to the method for claim 6, it is characterised in that described to open the by-passing valve (3) and the judgement system
Between the state of refrigerant operation, in addition to：
Outdoor heat exchanger (6) the second preset duration of continuous service t2.
10. according to the method for claim 5, it is characterised in that the aperture for tuning up the indoor electronic expansion valve (9)
Including：
The aperture for the indoor electronic expansion valve (9) being partly or entirely turned off is tuned up, and/or, tune up partly or entirely not
The aperture for the indoor electronic expansion valve (9) closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163343.XA CN107763889B (en) | 2017-11-21 | 2017-11-21 | Multi-split air conditioning system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711163343.XA CN107763889B (en) | 2017-11-21 | 2017-11-21 | Multi-split air conditioning system and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107763889A true CN107763889A (en) | 2018-03-06 |
| CN107763889B CN107763889B (en) | 2020-01-24 |
Family
ID=61278562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711163343.XA Active CN107763889B (en) | 2017-11-21 | 2017-11-21 | Multi-split air conditioning system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107763889B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518808A (en) * | 2018-06-12 | 2018-09-11 | 广东美的暖通设备有限公司 | Control method, device and the air-conditioning with it of air-conditioning |
| CN109489295A (en) * | 2018-11-21 | 2019-03-19 | 青岛海信日立空调系统有限公司 | Multi-connected air conditioning system and its control method |
| CN109631248A (en) * | 2018-11-16 | 2019-04-16 | 青岛海尔空调电子有限公司 | A kind of multi-joint mechanism cold oil return method for noise reduction control and system |
| CN109945442A (en) * | 2019-03-31 | 2019-06-28 | 邯郸美的制冷设备有限公司 | Air conditioner, the control method of air conditioner and computer readable storage medium |
| CN111023261A (en) * | 2019-12-17 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Method and device for reducing on-line noise of multi-connected unit and multi-connected unit |
| CN111076279A (en) * | 2020-01-08 | 2020-04-28 | 珠海格力电器股份有限公司 | Control method for updating multi-split air conditioning system and multi-split air conditioning system updating method |
| CN111503725A (en) * | 2020-04-29 | 2020-08-07 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioning system and control method thereof |
| CN111623549A (en) * | 2020-05-26 | 2020-09-04 | 青岛海尔空调电子有限公司 | Air conditioning system and control method and control device thereof |
| WO2021169391A1 (en) * | 2020-02-26 | 2021-09-02 | 青岛海尔空调电子有限公司 | Control method for air conditioner |
| CN113375356A (en) * | 2021-05-28 | 2021-09-10 | 青岛海尔空调电子有限公司 | Control method of multi-split refrigerating and freezing unit and multi-split refrigerating and freezing unit |
| CN114484720A (en) * | 2022-01-17 | 2022-05-13 | 青岛海尔空调电子有限公司 | Method and device for controlling air conditioner, air conditioner and storage medium |
| CN114992800A (en) * | 2022-05-07 | 2022-09-02 | 青岛海尔空调电子有限公司 | Self-cleaning control method for shutdown stage of air conditioning system and air conditioning system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1082566A (en) * | 1996-09-06 | 1998-03-31 | N T T Facilities:Kk | Air cooled packager-conditioner |
| CN1379854A (en) * | 1999-10-18 | 2002-11-13 | 大金工业株式会社 | Refrigerating device |
| CN102734865A (en) * | 2011-04-12 | 2012-10-17 | 珠海格力电器股份有限公司 | VRF (variable refrigerant flow) air conditioning system and control method thereof |
| CN103791588A (en) * | 2014-01-21 | 2014-05-14 | 宁波奥克斯电气有限公司 | Control method for solving problem of shortage of refrigerants of multi-link air conditioning unit |
| CN105299836A (en) * | 2015-11-09 | 2016-02-03 | 南京天加空调设备有限公司 | Control method for multi-split air conditioning system |
-
2017
- 2017-11-21 CN CN201711163343.XA patent/CN107763889B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1082566A (en) * | 1996-09-06 | 1998-03-31 | N T T Facilities:Kk | Air cooled packager-conditioner |
| CN1379854A (en) * | 1999-10-18 | 2002-11-13 | 大金工业株式会社 | Refrigerating device |
| CN102734865A (en) * | 2011-04-12 | 2012-10-17 | 珠海格力电器股份有限公司 | VRF (variable refrigerant flow) air conditioning system and control method thereof |
| CN103791588A (en) * | 2014-01-21 | 2014-05-14 | 宁波奥克斯电气有限公司 | Control method for solving problem of shortage of refrigerants of multi-link air conditioning unit |
| CN105299836A (en) * | 2015-11-09 | 2016-02-03 | 南京天加空调设备有限公司 | Control method for multi-split air conditioning system |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518808A (en) * | 2018-06-12 | 2018-09-11 | 广东美的暖通设备有限公司 | Control method, device and the air-conditioning with it of air-conditioning |
| CN109631248A (en) * | 2018-11-16 | 2019-04-16 | 青岛海尔空调电子有限公司 | A kind of multi-joint mechanism cold oil return method for noise reduction control and system |
| CN109631248B (en) * | 2018-11-16 | 2021-05-25 | 青岛海尔空调电子有限公司 | Multi-split air conditioner refrigeration oil return noise reduction control method and system |
| CN109489295B (en) * | 2018-11-21 | 2021-03-30 | 青岛海信日立空调系统有限公司 | Multi-connected air conditioning system and control method thereof |
| CN109489295A (en) * | 2018-11-21 | 2019-03-19 | 青岛海信日立空调系统有限公司 | Multi-connected air conditioning system and its control method |
| CN109945442A (en) * | 2019-03-31 | 2019-06-28 | 邯郸美的制冷设备有限公司 | Air conditioner, the control method of air conditioner and computer readable storage medium |
| CN109945442B (en) * | 2019-03-31 | 2021-04-27 | 邯郸美的制冷设备有限公司 | Air conditioner, control method of air conditioner, and computer-readable storage medium |
| CN111023261A (en) * | 2019-12-17 | 2020-04-17 | 宁波奥克斯电气股份有限公司 | Method and device for reducing on-line noise of multi-connected unit and multi-connected unit |
| CN111023261B (en) * | 2019-12-17 | 2021-07-16 | 宁波奥克斯电气股份有限公司 | Method and device for reducing on-line noise of multi-connected unit and multi-connected unit |
| CN111076279A (en) * | 2020-01-08 | 2020-04-28 | 珠海格力电器股份有限公司 | Control method for updating multi-split air conditioning system and multi-split air conditioning system updating method |
| WO2021169391A1 (en) * | 2020-02-26 | 2021-09-02 | 青岛海尔空调电子有限公司 | Control method for air conditioner |
| CN111503725A (en) * | 2020-04-29 | 2020-08-07 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioning system and control method thereof |
| CN111623549A (en) * | 2020-05-26 | 2020-09-04 | 青岛海尔空调电子有限公司 | Air conditioning system and control method and control device thereof |
| CN111623549B (en) * | 2020-05-26 | 2022-05-20 | 青岛海尔空调电子有限公司 | Air conditioning system and control method and control device thereof |
| CN113375356A (en) * | 2021-05-28 | 2021-09-10 | 青岛海尔空调电子有限公司 | Control method of multi-split refrigerating and freezing unit and multi-split refrigerating and freezing unit |
| CN114484720A (en) * | 2022-01-17 | 2022-05-13 | 青岛海尔空调电子有限公司 | Method and device for controlling air conditioner, air conditioner and storage medium |
| CN114992800A (en) * | 2022-05-07 | 2022-09-02 | 青岛海尔空调电子有限公司 | Self-cleaning control method for shutdown stage of air conditioning system and air conditioning system |
| CN114992800B (en) * | 2022-05-07 | 2024-02-23 | 青岛海尔空调电子有限公司 | Self-cleaning control method for shutdown stage of air conditioning system and air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107763889B (en) | 2020-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107763889A (en) | A kind of multi-online air-conditioning system and its control method | |
| US9909784B2 (en) | Outdoor unit of air conditioner and air conditioner | |
| WO2016192347A1 (en) | Light-load dehumidification and refrigeration method and device | |
| CN106382701A (en) | Multiple-on-line air conditioner as well as outdoor unit thereof, control method thereof and control device thereof | |
| CN105588358A (en) | Air supplementing and enthalpy increasing air conditioner system and air conditioner | |
| CN206207630U (en) | Multi-gang air-conditioner and its outdoor unit | |
| CN103062840B (en) | Air-conditioning system, control system and air-conditioning control method | |
| CN206545975U (en) | A kind of air-conditioning system | |
| CN107036245A (en) | The control device and method of multiple on-line system and its outdoor compressor | |
| CN106969524A (en) | The balance method of air-conditioning pressure balance system and air-conditioning pressure difference | |
| CN104791912A (en) | Multi-compressor air conditioning system and control method thereof | |
| CN103982951A (en) | Multi-split air conditioning outdoor unit and control method thereof | |
| CN103062841A (en) | Air-conditioning system, control system and air-conditioning control method | |
| CN106403349A (en) | Double-cylinder variable-capacity air conditioning system and control method | |
| CN108534386A (en) | A kind of cold and hot multifunctional integrated Air-Cooled Heat Pump Unit of four-pipe system | |
| CN103591732A (en) | Air-conditioning system | |
| CN106642790A (en) | Air-conditioning system and control method | |
| CN203798004U (en) | Refrigerating device | |
| CN102901189A (en) | Air conditioning system, control system and air conditioning control method | |
| JP2007032857A (en) | Refrigerating device | |
| CN103954065A (en) | Refrigerating device | |
| CN105627613A (en) | Outdoor unit for air conditioner and air conditioner | |
| CN212339696U (en) | Knockout and have its air conditioning system | |
| CN106196482B (en) | The control method of air-conditioning system | |
| CN104329838A (en) | Refrigerant adjusting method and device, and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |