CN101592388B - Control method for complete machine capability of variable-capacity multi-connected unit and control system therefor - Google Patents
Control method for complete machine capability of variable-capacity multi-connected unit and control system therefor Download PDFInfo
- Publication number
- CN101592388B CN101592388B CN 200810110718 CN200810110718A CN101592388B CN 101592388 B CN101592388 B CN 101592388B CN 200810110718 CN200810110718 CN 200810110718 CN 200810110718 A CN200810110718 A CN 200810110718A CN 101592388 B CN101592388 B CN 101592388B
- Authority
- CN
- China
- Prior art keywords
- variable
- relief valve
- compressor
- capacity multi
- pressure
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000012937 correction Methods 0.000 claims abstract description 4
- 239000007921 spray Substances 0.000 claims abstract 9
- 238000005057 refrigeration Methods 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 21
- 239000007924 injection Substances 0.000 description 21
- 238000013461 design Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 11
- 239000000243 solution Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
本发明公开了一种变容量多联机整机能力的控制方法，包括，根据所述变容量多联机的工作模式、室内机负荷和环境温度，确定开启压缩机的台数，及是否开启卸压阀；监测排气压力是否大于设定值，如是，根据上述开启的压缩机台数、是否开启卸压阀和所述变容量多联机出现的故障次数，重新确定开启所述压缩机的台数，及是否开启所述卸压阀与/或喷液冷却阀。本发明还公开了一种变容量多联机整机能力的控制系统，包括室外机、室内机、压缩机、卸压阀和喷液冷却阀，还包括控制模块、监测模块及修正模块。本发明通过监测排气压力自动改变整机能力输出，不会出现因为环境温度变化导致排气压力过高、系统报警停机的现象，从而达到良好的制冷、制热效果。
The invention discloses a method for controlling the capacity of a variable-capacity multi-connection unit, which includes determining the number of compressors to be turned on and whether to open a pressure relief valve according to the working mode of the variable-capacity multi-connection unit, the load of the indoor unit, and the ambient temperature ; Monitor whether the exhaust pressure is greater than the set value, if so, re-determine the number of compressors to be opened according to the number of compressors opened, whether to open the pressure relief valve and the number of failures of the variable capacity multi-line. Open the pressure relief valve and/or spray cooling valve. The invention also discloses a variable-capacity multi-line complete machine capability control system, which includes an outdoor unit, an indoor unit, a compressor, a pressure relief valve and a liquid spray cooling valve, and also includes a control module, a monitoring module and a correction module. The invention automatically changes the capacity output of the whole machine by monitoring the exhaust pressure, so that there will be no phenomenon that the exhaust pressure is too high due to the change of the ambient temperature, and the system will alarm and shut down, so as to achieve good cooling and heating effects.
Description
Technical field
The present invention relates to the air conditioner controlling technology field, particularly a kind of control method of complete machine capability of variable-capacity multi-connected unit and system.
Background technology
Variable-capacity multi-connected unit adopts pressure-relief valve to realize the varying capacity output of compressor, to satisfy the demand of indoor set different load.Because variable-capacity multi-connected unit is simple in structure, cost is low, and is easy to maintenance, is used widely in market.
Referring to Fig. 1, single compressor variable-capacity multi-connected unit system diagram.Comprise compressor 101, pressure-relief valve 102, Liquid injection cooling valve 103, gas-liquid separator 104, throttling arrangement electric expansion valve 105, high-pressure reservoir 106, condenser 107, cross valve 108, high-voltage switch gear 109 and low tension switch 110.Pressure-relief valve 102 is used for changing the Output pressure ability of compressor 101.But the ability output of single compressor is limited, can not satisfy the demand of many indoor sets, adopts multiple compressors in parallel, can improve the ability output of variable-capacity multi-connected unit, satisfies the demand of many indoor sets.
The variable-capacity multi-connected unit system that is formed by 2 compressors, referring to Fig. 2,2 compressor variable-capacity multi-connected unit system diagrams.Be that compressor 201 and compressor 202 are connected in parallel with Fig. 1 difference.Pressure-relief valve 203 is used for changing the pressure of compressor 201 and compressor 202.The variable-capacity multi-connected unit system that is formed by 3 compressors, referring to Fig. 3,3 compressor variable-capacity multi-connected unit system diagrams.Be that compressor 301, compressor 302 and compressor 303 are connected in parallel with Fig. 1 difference.Pressure-relief valve 304 is used for changing the pressure of compressor 301, compressor 302 and compressor 303.The employing multiple compressors is in parallel, the demand in the time of can satisfying many indoor set different loads.
Present this variable-capacity multi-connected unit mainly relies on the Output pressure ability that pressure-relief valve is regulated compressor.Variable-capacity multi-connected unit has very large limitation to the adaptation of environment temperature.When variation of ambient temperature was large, compressor was in order to adapt to this variation, and self pressure changes thereupon.When environment temperature rose to a certain degree, it was too high pressure at expulsion to occur.Solution is when development in laboratory at present, carries out a large amount of simulated tests, the ability output of compressor when simulating varying environment temperature, different indoor set load.This methods experiment amount is large, and corresponding compressor capacity output when being difficult to simulate all indoor sets loads.In case it is too high to occur pressure at expulsion in the running, the compressor shutdown of can reporting to the police.Still same fault alarm can occur after again starting, finally cause variable-capacity multi-connected unit to be shut down, can not satisfy user's demand.
Summary of the invention
The technical problem that the present invention solves provides a kind of control method of complete machine capability of variable-capacity multi-connected unit; the method complete machine capability output capable of automatic changing; can not occur because variation of ambient temperature causes the phenomenon that exhaust is too high, system alarm is shut down, thereby reach good refrigeration, heating effect.
The invention provides a kind of control method of complete machine capability of variable-capacity multi-connected unit, comprise
According to mode of operation, indoor set load and the environment temperature of described variable-capacity multi-connected unit, determine to open the number of units of compressor, and whether open pressure-relief valve;
Whether the monitoring pressure at expulsion is greater than setting value, in this way, according to the compressor number of units of above-mentioned unlatching, whether open pressure-relief valve and the described variable-capacity multi-connected unit number of times that breaks down, redefine the number of units of opening described compressor, and whether open described pressure-relief valve and Liquid injection cooling valve.
Preferably, also comprise when described variable-capacity multi-connected unit mode of operation is refrigeration, whether measure described environment temperature less than the first design temperature, in this way, compressor, pressure-relief valve and Liquid injection cooling valve are recovered the initial state of determining.
Preferably, also comprise when described variable-capacity multi-connected unit mode of operation when heating, whether measure described environment temperature less than the second design temperature, in this way, compressor, pressure-relief valve and Liquid injection cooling valve are recovered the initial state of determining.
Preferably, comprise that also off-premises station receives the demand code of the described indoor set payload of representative by connection, and to described demand code calculating summation, obtain the indoor set load.
Preferably, the scope of described the first design temperature is the 40-45 degree.
Preferably, the scope of described the second design temperature is the 20-25 degree.
Preferably, described pressure-relief valve cuts out or is 50-70 second by scope switching time that is closed to unlatching by being opened to.
The present invention also provides a kind of control system of complete machine capability of variable-capacity multi-connected unit, comprises off-premises station, indoor set, compressor, pressure-relief valve and Liquid injection cooling valve, also comprises control module, monitoring modular and correcting module;
Described control module is used for mode of operation, indoor set load and environment temperature according to described variable-capacity multi-connected unit, and control is opened the number of units of described compressor and whether opened described pressure-relief valve;
Whether described monitoring modular is used for the monitoring pressure at expulsion greater than setting value;
Described correcting module, be used for when described pressure at expulsion during greater than described setting value, according to the compressor number of units of above-mentioned unlatching, whether open pressure-relief valve and the described variable-capacity multi-connected unit number of times that breaks down, redefine the number of units of opening described compressor, and whether open described pressure-relief valve and Liquid injection cooling valve.
Preferably, also comprise the first measurement module, be used for when described variable-capacity multi-connected unit mode of operation is refrigeration, whether measuring described environment temperature less than the first design temperature, in this way, compressor, pressure-relief valve and Liquid injection cooling valve are recovered the initial state of determining.
Preferably, also comprise the second measurement module, be used for when described variable-capacity multi-connected unit mode of operation when heating, whether measure described environment temperature less than the second design temperature, in this way, compressor, pressure-relief valve and Liquid injection cooling valve are recovered definite at first state.
Preferably, also comprise timing module, be used for calculating described pressure-relief valve and close or by the switching time that is closed to unlatching, the scope of described switching time is 50-70 second by being opened to.
Preferably, described off-premises station receives the demand code of the described indoor set payload of representative by connection, and to described demand code calculating summation, obtains the indoor set load.
Compared with prior art, the present invention has the following advantages:
The present invention determines to open the number of units of compressor, and whether opens pressure-relief valve according to mode of operation, indoor set load and the environment temperature of variable-capacity multi-connected unit; Whether the monitoring pressure at expulsion is greater than setting value, in this way, according to the compressor number of units of above-mentioned unlatching, whether open pressure-relief valve and the described variable-capacity multi-connected unit number of times that breaks down, redefine the number of units of opening described compressor, and whether open described pressure-relief valve and Liquid injection cooling valve, carry out complete machine capability output and revise.The method is regulated the pressure of compressor by pressure-relief valve; the monitoring pressure at expulsion; if pressure at expulsion is too high; redefine the ability output of variable-capacity multi-connected unit; can not occur because variation of ambient temperature causes pressure at expulsion too high; cause the phenomenon that variable-capacity multi-connected unit is reported to the police and shut down, thereby reach good refrigeration, heating effect.
Description of drawings
Fig. 1 is single compressor variable-capacity multi-connected unit system diagram;
Fig. 2 is 2 compressor variable-capacity multi-connected unit system diagrams;
Fig. 3 is 3 compressor variable-capacity multi-connected unit system diagrams;
Fig. 4 is control method embodiment one flow chart of complete machine capability of variable-capacity multi-connected unit;
Fig. 5 is control method embodiment two flow charts of complete machine capability of variable-capacity multi-connected unit;
Fig. 6 is control method embodiment three flow charts of complete machine capability of variable-capacity multi-connected unit;
Fig. 7 is control system embodiment one schematic diagram of complete machine capability of variable-capacity multi-connected unit;
Fig. 8 is control system embodiment two schematic diagrames of complete machine capability of variable-capacity multi-connected unit.
The specific embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
Variable-capacity multi-connected unit adopts separate unit or multiple compressors, and pressure-relief valve and Liquid injection cooling valve are installed in system.According to environment temperature, and the indoor set load, the number of units of opening compressor automatically regulated; The monitoring pressure at expulsion; again opening or closing in conjunction with pressure-relief valve and Liquid injection cooling valve; realize the adjusting of variable-capacity multi-connected unit ability output; can not occur because variation of ambient temperature causes the too high phenomenon that causes that variable-capacity multi-connected unit is reported to the police and shut down of pressure at expulsion, thereby reach good refrigeration, heating effect.
Referring to Fig. 4, control method embodiment one flow chart of complete machine capability of variable-capacity multi-connected unit.Below in conjunction with concrete steps its course of work is described.
Step 401: according to mode of operation, indoor set load and the environment temperature of variable-capacity multi-connected unit, determine to open the number of units of compressor, and whether open pressure-relief valve.
For example described variable-capacity multi-connected unit comprises 2 compressors, and is in and heats mode of operation, when the load of indoor set greater than 6 less than or equal to 8, when environment temperature is spent less than 16 greater than 12 degree, determine that opening described compressor number of units is 2, and open described pressure-relief valve.
Step 402: whether the monitoring pressure at expulsion is greater than setting value, in this way, according to the compressor number of units of above-mentioned unlatching, whether open pressure-relief valve and the described variable-capacity multi-connected unit number of times that breaks down, redefine the number of units of opening described compressor, and whether open described pressure-relief valve and Liquid injection cooling valve.
For example the running status before the fault first time is unlatching 2 compressors in the above-mentioned steps 401, and opens pressure-relief valve; Redefine as opening 1 compressor after the fault for the first time, close pressure-relief valve; Redefine after the fault for the second time as opening 1 compressor, and open pressure-relief valve; Redefine after the fault for the third time as opening 1 compressor, and open pressure-relief valve and Liquid injection cooling valve.
Describe the control method of complete machine capability of variable-capacity multi-connected unit in detail below by form.SV1 in following all forms (Solenoid Valve) represents pressure-relief valve, and SV2 represents the Liquid injection cooling valve; X represents the indoor set load, and unit is (HP, a Horse Power); TA represents environment temperature, and unit is degree.Wherein table 1, table 3, table 5 are respectively single compressor, 2 compressors and the 3 compressors ability output control method when heating; Ability output control method when table 2, table 4, table 6 are respectively single compressor, 2 compressors and 3 compressors refrigeration.
Table 1 single compressor heats complete machine capability output control
Single compressor shown in the table 1 heats complete machine capability output control.P1, P2 represent different indoor set loads; TA1, TA2 represent different temperature with TA3.As can be seen from Table 1 when indoor set load X greater than P2, and environment temperature TA is during greater than TA3, complete machine capability output is controlled to be opens 1 compressor, and opens pressure-relief valve.
For example P1 is 3.5HP, and P2 is 6HP.TA1 is that 0 degree, TA3 are 16 degree for-3 degree, TA2.Wherein TA1, TA2 and TA3 also can be other numerical value, can be any one numerical value between the 0-12 degree such as TA2, and namely environment temperature is between the 0-12 degree, and complete machine output is controlled to be opens 1 compressor.
Table 2 single compressor refrigeration complete machine capability output control
The refrigeration of single compressor shown in the table 2 complete machine capability output control.Different from table 1 is that ambient temperature range is different, represents different temperature with TB1, TB2 and TB3.For example TB1 is that 24 degree, TB2 are that 28 degree, TB3 are 36 degree.Wherein TB1, TB2 and TB3 also can be a scope, and when temperature value was in this scope, identical control method was taked in complete machine capability output when identical indoor set was loaded.As being 24 when spending as TB1, TB2 can be any one numerical value between the 28-32 degree, and namely environment temperature TA is greater than 24 degree, and during less than or equal to any one numerical value between the 28-32 degree, complete machine output is controlled to be opens 1 compressor.
Table 32 compressors heat complete machine capability output control
| X≤N1 | 1 compressor | 1 compressor | 1 compressor+SV1 | 1 compressor+SV1 |
| N1＜X≤N2 | 1 compressor | 1 compressor | 1 compressor | 1 compressor+SV1 |
| N2＜X≤N3 | 2 compressors | 2 compressors | 2 compressors+SV1 | 2 compressors+SV1 |
| X＞N3 | 2 compressors | 2 compressors | 2 compressors | 2 compressors+SV1 |
2 compressors shown in the table 3 heat complete machine capability output control.To heat complete machine capability output control similar with single compressor, as shown in table 3ly represents that with N1, N2 and N3 different indoor sets loads.For example N1 is that 3.5HP, N2 are that 6HP, N3 are 8HP; TA1 is that 0 degree, TA3 are 16 degree for-3 degree, TA2.For example when indoor set load greater than 6HP less than 8HP, and environment temperature is when spending less than 16 greater than 0 degree, the control complete machine capability is opened pressure-relief valve for opening 2 compressors.
Table 42 compressors refrigeration complete machine capability output control
2 compressors shown in the table 4 heat complete machine capability output control, and table 4 only has ambient temperature range different from table 3, represents different temperature with TB1, TB2 and TB3.For example TB1 is that 24 degree, TB2 are that 28 degree, TB3 are 36.Wherein TB1, TB2 and TB3 also can be a scope, and when temperature value was in this scope, complete machine capability output taked to control same procedure when identical indoor set was loaded.As being 24 when spending as TB1, TB2 can be any one numerical value between the 28-32 degree, and namely environment temperature TA is greater than 24 degree, and less than or equal to any one numerical value between the 28-32 degree, and X is greater than 6HP during less than or equal to 8HP, and complete machine output is controlled to be opens 2 compressors.
Table 53 compressors heat complete machine capability output control
| M2＜X≤M3 | 2 compressors | 2 compressors | 2 compressors+SV1 | 2 compressors+SV1 |
| M3＜X≤M4 | 2 compressors | 2 compressors | 2 compressors | 2 compressors+SV1 |
| M4＜X≤M5 | 3 compressors | 3 compressors | 3 compressors+SV1 | 3 compressors+SV1 |
| X＞M5 | 3 compressors | 3 compressors | 3 compressors | 3 compressors+SV1 |
3 compressors shown in the table 5 heat complete machine capability output control.To heat complete machine capability output control similar with 2 compressors, as shown in table 5ly represents that with M1, M2, M3 and M4 different indoor sets loads.For example M1 is that 3.5HP, M2 are that 6HP, M3 are that 8HP, M4 are 16HP; TA1 is that 0 degree, TA3 are 16 degree for-3 degree, TA2.For example when indoor set load greater than 6HP less than 8HP, and environment temperature is when spending less than 16 greater than 0 degree, the control complete machine capability is opened pressure-relief valve for opening 2 compressors.
Table 63 compressors refrigeration complete machine capability output control
Shown in the table 6 is that 3 compressors heat complete machine capability output control, and table 6 only has ambient temperature range different from table 5, represents different temperature with TB1, TB2, TB3 and TB4.Represent different indoor set loads with M1, M2, M3 and M4.For example M1 is that 3.5HP, M2 are that 6HP, M3 are that 8HP, M4 are 16; For example TB1 is that 24 degree, TB2 are that 28 degree, TB3 are that 36 degree, TB4 are 40 degree.Wherein TB1, TB2, TB3 and TB4 also can be a scope, and when temperature range was in this scope, complete machine capability output taked to control same procedure when identical indoor set was loaded.As being 24 when spending as TB1, TB2 can be any one numerical value between the 28-32 degree, and namely environment temperature TA is greater than 24 degree, less than or equal to any one numerical value between the 28-32 degree, and during less than 16HP, complete machine output is controlled to be 2 compressors greater than 8HP for indoor set load.
Introduce when pressure at expulsion in the running surpasses setting value in detail below by table 7, redefine the control method of complete machine capability output.
The correction of table 7 complete machine capability of variable-capacity multi-connected unit
As shown in table 7, according to the compressor number of units of initial unlatching, whether open the number of stoppages that pressure-relief valve and described variable-capacity multi-connected unit occur, redefine the number of units of opening described compressor, and whether open described pressure-relief valve and Liquid injection cooling valve.For example initial running status after for the first time fault clearance, is opened 2 compressors for opening 3 compressors when again starting; After for the second time fault clearance, open 2 compressors when again starting, and open pressure-relief valve; After the fault clearance, open 1 compressor for the third time.When initial running status is 1 compressor, through after twice fault, substantially can revise successfully, for the third time fault can not appear.
TC in the table 7 represents described the first design temperature, when described variable-capacity multi-connected unit mode of operation is refrigeration, whether measures described environment temperature less than TC, in this way, compressor, pressure-relief valve and Liquid injection cooling valve is recovered the initial state of determining.TH represents described the second design temperature, when described variable-capacity multi-connected unit mode of operation when heating, whether measure described environment temperature less than TH, in this way, compressor, pressure-relief valve and Liquid injection cooling valve are recovered the initial state of determining.
For convenience of description, the following examples are in the refrigeration work pattern as example take the variable-capacity multi-connected unit of 3 compressors, and concrete complete machine capability control method is described.Referring to Fig. 5, control method embodiment two flow charts of complete machine capability of variable-capacity multi-connected unit.
Step 501: the indoor set of variable-capacity multi-connected unit receives the demand code that represents the indoor set payload by connection, and to this demand code summation, obtains the indoor set load.For example the 1HP ability need is designated as 1,2HP and is designated as 2,3HP and is designated as 3, and the rest may be inferred.For example First indoor set load is 2, the second to be 3, the three is 2, the then demand code summation of off-premises station to receiving, and obtaining the indoor set total load is 7.
Step 502: according to indoor set load and environment temperature, determine to open the number of units of compressor, and whether open pressure-relief valve.According to indoor set load and environment temperature, determine to open the number of units of compressor by above-mentioned table 6, and whether open pressure-relief valve.The indoor set that for example obtains in above-mentioned steps 501 load is 7HP, and less than 8HP, and temperature opens 2 compressors when spending less than or equal to 36 greater than 28 degree, do not open pressure-relief valve greater than 6HP.
Step 503: whether the monitoring pressure at expulsion surpasses setting value.In this way, enter step 504; As no, operation maintains the original state.
Step 504: according to the compressor number of units of above-mentioned unlatching, whether open pressure-relief valve and the variable-capacity multi-connected unit number of times that breaks down, redefine the number of units of opening compressor, and whether open pressure-relief valve and Liquid injection cooling valve.For example set value when pressure at expulsion surpasses, for example above-mentioned steps 502 is described, and initial running status is to open 2 compressors.After for the first time fault clearance, open 2 compressors when again starting, and open pressure-relief valve; After for the second time fault clearance, open 1 compressor when again starting; After the fault clearance, open 1 compressor for the third time, and open pressure-relief valve.
Step 505: whether measures ambient temperature is less than or equal to the first design temperature.In this way, enter step 502; As no, operation maintains the original state.The scope of the first design temperature is the 40-45 degree.For example when variable-capacity multi-connected unit was in refrigeration, the first design temperature was 43 degree, when environment temperature is spent less than or equal to 43, returns to initial running status; When spending greater than 43, redefine the number of units of opening compressor according to table 7, and whether open pressure-relief valve or Liquid injection cooling valve.
Step 506: pressure-relief valve cuts out or by being controlled at 50-70 second the switching time that is closed to unlatching by being opened to.For fear of because variation of ambient temperature, cause that pressure-relief valve frequently opens or cut out, cause the pressure-relief valve infringement, the change-over switch duration of control pressure-relief valve is 50-70 second, for example is 60 seconds.For example, shown in the table 6, TA is during greater than TB2, and indoor set X is less than or equal to M1, according to starting 1 compressor, and opens the pressure-relief valve operation; When variation of ambient temperature, during TA=TB2, according to starting the operation of 1 compressor, at this moment pressure-relief valve just need to cut out, and pressure-relief valve need to continue 60S just closes, and avoids pressure-relief valve because variation of ambient temperature is frequently opened or closed.
Referring to Fig. 6, control method embodiment three flow charts of complete machine capability of variable-capacity multi-connected unit, different from Fig. 5 is that variable-capacity multi-connected unit is in the complete machine capability control method that heats mode of operation.Control method is similar, does not repeat them here.The scope of the second design temperature is the 20-25 degree, for example is 21 degree.
Based on the control method of above-mentioned complete machine capability of variable-capacity multi-connected unit, the present invention also provides the control system of complete machine capability of variable-capacity multi-connected unit, describes its part in detail below in conjunction with specific embodiment.
Referring to Fig. 7, control system embodiment one schematic diagram of complete machine capability of variable-capacity multi-connected unit.Comprise control module 701, monitoring modular 702, correcting module 703.
For example described variable-capacity multi-connected unit comprises 2 compressors, and is in and heats mode of operation, when the load of indoor set greater than 6 less than or equal to 8, when environment temperature was spent less than 16 greater than 12 degree, it was 2 that described compressor number of units is opened in control, and opens described pressure-relief valve.
Whether monitoring modular 702 monitoring pressures at expulsion are greater than setting value.In this way, according to the compressor number of units of above-mentioned unlatching, whether open pressure-relief valve and the described variable-capacity multi-connected unit number of times that breaks down, correcting module 703 is revised the number of units of opening described compressor, and whether opens described pressure-relief valve and Liquid injection cooling valve.Described monitoring modular 702 is finished by high-voltage switch gear 109, high-voltage switch gear 210, high-voltage switch gear 311 corresponding among Fig. 1, Fig. 2, Fig. 3, and whether the pressure at expulsion of monitoring compressor is too high.
For example the running status before the fault first time is unlatching 2 compressors in the above-mentioned steps 701, and opens pressure-relief valve; Redefine as opening 1 compressor after the fault for the first time, close pressure-relief valve; Redefine after the fault for the second time as opening 1 compressor, and open pressure-relief valve; Redefine after the fault for the third time as opening 1 compressor, and open pressure-relief valve and Liquid injection cooling valve.
Referring to Fig. 7, control system embodiment two schematic diagrames of complete machine capability of variable-capacity multi-connected unit.
The first measurement module 805, when variable-capacity multi-connected unit was in the refrigeration work pattern, whether measures ambient temperature when less than or equal to described first design temperature, returned to for the first time fault front running status less than or equal to the first design temperature.
The second measurement module 806, when variable-capacity multi-connected unit is in when heating mode of operation, whether measures ambient temperature less than or equal to the second design temperature, when less than or equal to described the second design temperature, returns to the running status before the fault for the first time.
Function in control system embodiment one schematic diagram of control module 802, monitoring modular 803, correcting module 804 and complete machine capability of variable-capacity multi-connected unit is identical, does not repeat them here.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Although the present invention discloses as above with preferred embodiment, yet is not to limit the present invention.Any those of ordinary skill in the art, do not breaking away from the technical solution of the present invention scope situation, all can utilize method and the technology contents of above-mentioned announcement that technical solution of the present invention is made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solution of the present invention according to any simple modification, equivalent variations and the modification that technical spirit of the present invention is done above embodiment, all still belongs in the scope of technical solution of the present invention protection.
Claims (12)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810110718 CN101592388B (en) | 2008-05-27 | 2008-05-27 | Control method for complete machine capability of variable-capacity multi-connected unit and control system therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810110718 CN101592388B (en) | 2008-05-27 | 2008-05-27 | Control method for complete machine capability of variable-capacity multi-connected unit and control system therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101592388A CN101592388A (en) | 2009-12-02 |
| CN101592388B true CN101592388B (en) | 2013-10-30 |
Family
ID=41407177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810110718 Active CN101592388B (en) | 2008-05-27 | 2008-05-27 | Control method for complete machine capability of variable-capacity multi-connected unit and control system therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101592388B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062452A (en) * | 2010-09-09 | 2011-05-18 | 上海斯图华纳空调有限公司 | Split variable volume module system replacing air source frequency variable multi -connected unit |
| CN102466301B (en) * | 2010-11-19 | 2013-10-16 | 约克广州空调冷冻设备有限公司 | Method and system for loading and deloading unit module in module unit |
| CN103842749B (en) * | 2011-10-07 | 2016-08-17 | 丹佛斯公司 | For the method controlling the gas pressure in cooling device |
| CN103291592B (en) * | 2013-06-04 | 2015-05-20 | 宁波奥克斯电气有限公司 | Control method of output capacity of frequency-variable multi-coupled compressors |
| CN104422072B (en) * | 2013-09-05 | 2017-03-15 | 珠海格力电器股份有限公司 | Control method of multi-split air conditioner and control system of multi-split air conditioner |
| CN104405629B (en) * | 2014-11-21 | 2016-07-06 | 珠海格力电器股份有限公司 | Control method and system for improving operation reliability of compressor |
| CN105605842B (en) * | 2015-12-28 | 2018-07-03 | 重庆美的通用制冷设备有限公司 | The control method of multimode unit |
| CN105650819B (en) * | 2016-02-01 | 2019-11-15 | 青岛海尔空调电子有限公司 | A control method for high-temperature refrigeration of multi-connected air conditioners |
| CN106440455B (en) * | 2016-09-19 | 2019-04-30 | 广东美的暖通设备有限公司 | The method for handover control of multi-line system and its indoor unit operational mode |
| CN106765976B (en) * | 2017-01-05 | 2019-04-30 | 广东志高空调有限公司 | A method of the remote air conditioner monitoring system with load balance control ability |
| CN109441820B (en) * | 2018-10-19 | 2020-11-24 | 珠海格力电器股份有限公司 | Variable-capacity compressor starting control method and device, variable-capacity compressor and storage medium |
| CN109556258B (en) * | 2018-11-06 | 2021-03-16 | 广东美的暖通设备有限公司 | Air conditioning system and control method thereof |
| CN112594885B (en) * | 2019-04-19 | 2022-09-06 | 青岛海尔空调器有限总公司 | Air conditioner and control method thereof |
| CN111854216B (en) * | 2019-04-28 | 2021-07-23 | 广东美芝精密制造有限公司 | Air conditioning system |
| CN111256335B (en) * | 2020-02-17 | 2021-08-03 | 海信（山东）空调有限公司 | Control method for frequency conversion compressor in heat pump air conditioner |
| CN112105238B (en) * | 2020-09-24 | 2022-09-20 | 安擎(天津)计算机有限公司 | Liquid cooling system for server and control method thereof |
| CN112486014B (en) * | 2020-11-24 | 2024-04-05 | 江苏兆胜空调有限公司 | Load distribution control method for refrigeration multi-split system |
| CN113108442B (en) * | 2021-04-21 | 2022-05-06 | 珠海格力电器股份有限公司 | Capacity allocation method and apparatus, multi-split air conditioner, and storage medium |
| CN114216221B (en) * | 2021-12-20 | 2023-06-02 | 宁波奥克斯电气股份有限公司 | Detection method, device, multi-connection and storage medium for multi-connection |
| CN116146516B (en) * | 2022-12-05 | 2024-03-12 | 广钢气体(广州)有限公司 | Intelligent grid-connected control method and system for multiple compressors |
| CN116358136A (en) * | 2023-03-31 | 2023-06-30 | 浙江中广电器集团股份有限公司 | A method for controlling a dual-compressor multi-connected air conditioner |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4799359A (en) * | 1986-02-27 | 1989-01-24 | Helix Technology Corporation | Cryogenic refrigerator compressor with externally adjustable by-pass/relief valve |
| CN1191958A (en) * | 1997-01-06 | 1998-09-02 | 运载器有限公司 | Combination valve for screw compressors |
| US6047557A (en) * | 1995-06-07 | 2000-04-11 | Copeland Corporation | Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| CN1275700A (en) * | 2000-06-02 | 2000-12-06 | 海尔集团公司 | Improved refrigerating system for one driving multiple-unit air conditioner |
| CN1385659A (en) * | 2001-03-16 | 2002-12-18 | 科普兰公司 | Digital Scroll Condensing Unit Controller |
| CN1573115A (en) * | 2003-06-20 | 2005-02-02 | 科普兰公司 | Plural compressors |
| CN1860302A (en) * | 2003-07-30 | 2006-11-08 | 气体产品与化学公司 | Gas compressor |
| JP2007232343A (en) * | 2006-02-02 | 2007-09-13 | Sanden Corp | Refrigerating circuit and compressor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0626474A (en) * | 1992-07-09 | 1994-02-01 | Mitsubishi Heavy Ind Ltd | Scroll compressor |
| JP3738414B2 (en) * | 1999-06-30 | 2006-01-25 | 株式会社日立製作所 | Heat pump air conditioner |
| US6883341B1 (en) * | 2003-11-10 | 2005-04-26 | Carrier Corporation | Compressor with unloader valve between economizer line and evaporator inlet |
| JP4532327B2 (en) * | 2005-03-31 | 2010-08-25 | 株式会社神戸製鋼所 | Compressor and operation control method thereof |
| CN2861868Y (en) * | 2005-11-30 | 2007-01-24 | 东莞市广大制冷有限公司 | Air conditioning system with unloading device |
-
2008
- 2008-05-27 CN CN 200810110718 patent/CN101592388B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4799359A (en) * | 1986-02-27 | 1989-01-24 | Helix Technology Corporation | Cryogenic refrigerator compressor with externally adjustable by-pass/relief valve |
| US6047557A (en) * | 1995-06-07 | 2000-04-11 | Copeland Corporation | Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| CN1191958A (en) * | 1997-01-06 | 1998-09-02 | 运载器有限公司 | Combination valve for screw compressors |
| CN1275700A (en) * | 2000-06-02 | 2000-12-06 | 海尔集团公司 | Improved refrigerating system for one driving multiple-unit air conditioner |
| CN1385659A (en) * | 2001-03-16 | 2002-12-18 | 科普兰公司 | Digital Scroll Condensing Unit Controller |
| CN1573115A (en) * | 2003-06-20 | 2005-02-02 | 科普兰公司 | Plural compressors |
| CN1860302A (en) * | 2003-07-30 | 2006-11-08 | 气体产品与化学公司 | Gas compressor |
| JP2007232343A (en) * | 2006-02-02 | 2007-09-13 | Sanden Corp | Refrigerating circuit and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101592388A (en) | 2009-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101592388B (en) | Control method for complete machine capability of variable-capacity multi-connected unit and control system therefor | |
| EP3882533B1 (en) | Control method and system for refrigeration, oil return and noise reduction of multi-split air-conditioner | |
| CN109595747B (en) | Energy consumption simulation method and device of air conditioning system | |
| CN105546771B (en) | The method and apparatus of air-conditioner coolant leak detection | |
| US20210041148A1 (en) | Vrv oil return control method and system | |
| RU2013117057A (en) | PRESSURE CONTROL DEVICE | |
| CN110567089B (en) | Equipment management method and device for air conditioner energy efficiency ratio management and air conditioner system | |
| CN110044005A (en) | A kind of air conditioning control method, device and air-conditioning | |
| CN105698284B (en) | Air-conditioning system and its refrigeration control method and device | |
| CN103982980A (en) | Anti-freezing control method and device for air conditioner heat exchanger | |
| JP5951397B2 (en) | Air conditioner | |
| CN112361538B (en) | Oil return control method and device and multi-split system | |
| CN110030707A (en) | Air-conditioning system adjusting method, air conditioner and computer readable storage medium | |
| CN107062564A (en) | Control method, air conditioner and the storage medium of air conditioner | |
| CN107560214A (en) | A control method and device for an expansion valve | |
| CN108692426A (en) | Air conditioner defrosting control method | |
| CN105444366A (en) | Oil blockage detecting method and detecting device of air conditioning system and air conditioner | |
| CN2762012Y (en) | Fast starting air conditioner | |
| CN105588282A (en) | Detection method and device for air conditioning system greasy blockage and air conditioner | |
| CN113503620A (en) | Air conditioning system control method and device, storage medium and air conditioning system | |
| CN115406066B (en) | Air conditioner control method, air conditioner, storage medium and device | |
| CN108592297A (en) | Air conditioner defrosting control method | |
| CN108692425B (en) | Air conditioner defrosting control method | |
| CN116734417A (en) | Control method, control device and air conditioner for multi-split air conditioner | |
| CN117006597A (en) | Refrigerant diagnosis method and device, multi-split air conditioner and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |