CN101086371A - Compressor operation method of multi-split air conditioner - Google Patents
Compressor operation method of multi-split air conditioner Download PDFInfo
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- CN101086371A CN101086371A CN 200610014105 CN200610014105A CN101086371A CN 101086371 A CN101086371 A CN 101086371A CN 200610014105 CN200610014105 CN 200610014105 CN 200610014105 A CN200610014105 A CN 200610014105A CN 101086371 A CN101086371 A CN 101086371A
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Abstract
The invention discloses an operating method of compressor in the multi-towing air conditioner, which comprises the following steps: judging the quantity to drive the indoor machine and the needed load capacitance of indoor machine; setting goal pressure stage of compressor according to the load capacitance of the indoor machine; driving at least one constant speed compressor after setting the goal pressure; comparing the object pressure and present pressure of constant speed compressor; driving frequency conversion compressor if the goal pressure is more than present pressure. The invention drives at least one constant speed compressor at first and makes residual load carried by frequency conversion compressor, which reduces the using frequency of frequency conversion compressor.
Description
Technical field
The present invention relates to a kind of compressor operation method of multi-split air conditioner, especially when the running multi-split air conditioner, drive at least one in the constant speed compressor earlier, drive frequency-changeable compressor for remaining load, with the compressor operation method of the multi-split air conditioner of the running rate that reduces frequency-changeable compressor.
Background technology
Shown in Fig. 5,6, for the off-premises station of prior art multi-split air conditioner, a plurality of off- premises stations 1,2,3 link to each other with a plurality of indoor sets by the refrigerant comb, corresponding to the load of indoor set, drive at least one in the off- premises station 1,2,3.
Off-premises station 1 comprises: only export the fluid reservoir 4 of supplying with the gas coolant the refrigerant from indoor set; Reception and compression are from the compressor 5,6 of fluid reservoir 4 gas supplied refrigerants; Link to each other with compressor 5,6, and selection is compressed the cross valve 7 of the stream of refrigerant; And the outdoor heat converter 8 that makes the refrigerant supplied with from cross valve 7 and outdoor air carry out heat exchange.
The constant speed compressor 6 of frequency-changeable compressor 5 that compressor 5,6 is discharged by changing the compression volume of refrigerant and the refrigerant of only discharging a constant volume constitutes, and remaining off- premises station 2,3 is different from off-premises station 1, only is provided with two constant speed compressors 6.
In the whole refrigerant compression volume of off-premises station 1, frequency-changeable compressor 5 is born 70% of integral body, and constant speed compressor 6 bears remaining 30%.
The job order of existing multi-split air conditioner off-premises station is as follows:
At first, when driving in a plurality of indoor sets, first off-premises station 1 with frequency-changeable compressor 5 begins to drive, and when refrigeration/thermal capacity that indoor set requires increased, corresponding with it remaining compressor 6 or off- premises station 2,3 began to drive.That is, as long as indoor set drives, at first frequency-changeable compressor 5 begins to drive, and satisfies the refrigerating/heating load of indoor set.And, when refrigeration/thermic load that indoor set requires surpasses frequency-changeable compressor 5, constant speed compressor 6 in the constant speed compressor 6 of first off-premises station 1 or the residue off- premises station 2,3 begins to drive, and the compression volume of replacement frequency-changeable compressor 5, make the compression volume of frequency-changeable compressor 5 drop to the lowest compression capacity, when refrigeration/the thermal capacity of indoor set increased once more afterwards, frequency-changeable compressor 5 increased its compression volume again in order to satisfy refrigeration/thermal capacity.
The running capacity of prior art compressor as shown in Figure 7.
But the method in the prior art multi-split air conditioner drives compressor, and the frequency of utilization of frequency-changeable compressor 5 can be very high, so become inhomogeneous the service life of integrating compressor 5,6.Moreover frequency-changeable compressor 5 is compared constant speed compressor 6 and is cost an arm and a leg, if with method drive compression machine of the prior art, then might at first will change frequency-changeable compressor 5.In addition, if with the method in the prior art multi-split air conditioner compressor is driven, even if then off-premises station has a plurality of compressors, as long as frequency-changeable compressor generation fault, whole multi-split air conditioner system will can not be driven.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of and at first drive constant speed compressor when driving multi-split air conditioner, drives the compressor operation method of the multi-split air conditioner of frequency-changeable compressor again according to refrigeration/thermic load.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of compressor operation method of multi-split air conditioner comprised successively with the next stage: judge the quantity of the indoor set that driven in a plurality of indoor sets and the stage of load capacity that indoor set is required; Require the capacity of loading to set the goal pressure stage of compressor according to indoor set; After the goal pressure setting stage, the stage of at least one in the constant speed compressor of driving off-premises station; The stage of the existing pressure of the comparison object pressure and the constant speed compressor that drives; The goal pressure of setting drives the stage of frequency-changeable compressor during greater than existing pressure again.
The constant speed compressor that is driven in the driving stage of constant speed compressor is the mutual driven of a plurality of compressors.
In the driving stage of frequency-changeable compressor, when frequency-changeable compressor produced fault, at least one that drives again in the residue constant speed compressor replaced the load of frequency-changeable compressor.
Judging that according to indoor capacity load that the stage judges drives the stage of constant speed compressor, be to drive a plurality of constant speed compressors.
The invention has the beneficial effects as follows: the compressor operation method of multi-split air conditioner of the present invention, in order to satisfy the indoor load that requires, drive in the constant speed compressor earlier, remaining afterwards load is born by frequency-changeable compressor, therefore can reduce the frequency of utilization of frequency-changeable compressor, be used alternatingly a plurality of constant speed compressors and reduce the frequency of utilization of frequency-changeable compressor, the service life that can evenly keep integrating compressor.And, the compressor operation method of multi-split air conditioner of the present invention is different from the prior art that at first drives a frequency-changeable compressor, but elder generation drives one in a plurality of constant speed compressors, even if therefore frequency-changeable compressor produces fault, other constant speed compressor also can replace frequency-changeable compressor and drive whole system.
Description of drawings
Fig. 1 is the general stereogram of multi-split air conditioner of the present invention.
Fig. 2 is the pie graph of multi-split air conditioner off-premises station of the present invention.
Fig. 3 is the compressor operation method flow chart of multi-split air conditioner of the present invention.
Fig. 4 is the quantity chart of multi-split air conditioner of the present invention according to employed constant speed compressor of load and frequency-changeable compressor.
Fig. 5 is the general stereogram of prior art multi-split air conditioner.
Fig. 6 is the pie graph of prior art multi-split air conditioner off-premises station.
Fig. 7 is the quantity chart of prior art multi-split air conditioner according to employed constant speed compressor of load and frequency-changeable compressor.
Among the figure:
11,12,13,14: indoor set 21,22,23: off-premises station
51: indoor heat converter 54: indoor electromagnetic expanding valve
61: fluid reservoir 62: frequency-changeable compressor
63: constant speed compressor 64: oil eliminator
65: cross valve 66: capillary
70: outdoor heat converter 74: outdoor electromagnetic expanding valve
80: apparatus for supercooling 107: pressure sensor
90: liquid injection apparatus
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:
As Fig. 1, shown in Figure 2, multi-split air conditioner of the present invention is by being arranged at the indoor a plurality of indoor sets 11 of building, 12,13,14 and with indoor set 11,12,13,14 off-premises stations 21 that link to each other, 22,23 constitute, indoor set 11,12,13,14 and off- premises station 21,22,23 by refrigerant comb 30,40 link to each other, off- premises station 21,22,23 according to indoor set 11,12, the request of at least one in 13 and driving, indoor set 11,12,13 desired refrigeration/thermal capacity increase more, off- premises station 21,22,23 driving quantity and be arranged at off-premises station 21, the driving quantity of 22 compressor also increases.
As shown in Figure 2, off- premises station 21,22,23 is made of first, second and third off- premises station 21,22,23, and it comprises: only export the fluid reservoir 61 of supplying with the gas coolant the refrigerant from indoor set; Reception and compression are from the compressor 62,63,67 of fluid reservoir 61 gas supplied refrigerants; Link to each other with compressor 62,63, and selection is compressed the cross valve 65 of the stream of refrigerant; And the outdoor heat converter 70 that makes the refrigerant supplied with from cross valve 65 and outdoor air carry out heat exchange.
First off-premises station 21 has frequency-changeable compressor 62 and constant speed compressor 63,22,23 of second and third off-premises stations have constant speed compressor 67, frequency-changeable compressor 62 is the compressors that can change the compression volume of refrigerant, constant speed compressor the 63, the 67th, the compressor that the compression volume of refrigerant is fixed.
Frequency-changeable compressor 62 bear first off-premises station 21 compression volume 70%, it is remaining 30% that the constant speed compressor 63 that is arranged at first off-premises station 21 is born, the constant speed compressor 67 of off- premises station 22,23 is born 50% compression volume respectively in addition.
In addition, the comb that each compressor 62,63 is connected with cross valve 65 is provided with oil eliminator 64, and oil eliminator 64 is connected the suction side of compressor 62,63.Be provided with the pressure sensor 107 that detects compressor 62,63, the 67 refrigerant pressure of discharging between oil eliminator 64 and the compressor 62,63,67.
Oil in the refrigerant that oil eliminator 64 separate compressors 62,63 are discharged, separated oil supplies to compressor 62,63, guarantees the inside of a certain amount of oil at compressor 62,63 thus.And oil eliminator 64 links to each other by capillary 66 with the suction side comb of compressor 62,63, and oil flows by capillary 66.
Discharge in the refrigerant comb 30 of the refrigerant of outdoor heat converter 70 to indoor heat converter 51 guiding and to be provided with: the electromagnetic expanding valve 74 that refrigerant is expanded, when when refrigeration cool stream to the apparatus for supercooling 80 of the refrigerant of indoor heat converter 51, and the liquid that can reduce the temperature of compressor 62,63 sprays (liquid injection) device 90.
When refrigeration, outdoor electromagnetic expanding valve 74 is by complete opening, therefore condensation can not be inflated and flows through in the refrigerant of outdoor heat converter, but when heating, outdoor electromagnetic expanding valve 74 makes condensation before the refrigerant of indoor heat converter 51 is flowing into outdoor heat converter 70 with a certain size unlatching, is expanded to vaporific liquid.
In addition, the drying machine of the inner moisture that refrigerant comb 30 " is provided with and can removes refrigerant comb 30 ", the refrigerant of the drying machine of flowing through is at refrigerant comb 30 " goes up shunting and flow to indoor heat converter 51 sides.
Below, with reference to Fig. 3 the course of work of off-premises station of the present invention is elaborated:
The course of work of off-premises station comprises: if multi-split air conditioner begins to freeze/heat run, then control part judge each indoor set 11～14 driving whether, and judge the quantity of the indoor set that drives and the stage S10 of load capacity that indoor set requires; Require the capacity of loading to set the stage S20 of the high/low pressure of target of compressor according to indoor set; After goal pressure is set stage S20, drive the stage S30 of the constant speed compressor 63 of off-premises station 21; Relatively set the stage S40 of the existing pressure of goal pressure that stage S20 sets and constant speed compressor 63 in goal pressure; The goal pressure of setting drives the stage S50 of frequency-changeable compressor 62 during greater than existing pressure again.
Indoor capacity decision stage S10 is in order to judge the stage of indoor load, control part adjusts the driving quantity of indoor set and indoor set and requires to freeze/and the amount of thermic load.
Set stage S20 in goal pressure, set the compression volume of refrigerant according to the amount of the load of judging.
After goal pressure is set, the stage S30 of variety of priority driven constant speed compressor 63.
Multi-split air conditioner has a plurality of indoor sets, and the user in each house can experience variations in temperature, and in general, one driving multiple-unit air conditioner compares that only to drive an indoor set more more common than the situation that drives a plurality of indoor sets simultaneously.Therefore, even if the constant speed compressor 63 of drive compression one constant volume refrigerant can not wasted too many energy yet, in addition frequency-changeable compressor 62 also drives along with constant speed compressor 63 usually.And, at the driving stage of constant speed compressor S30, can drive a plurality of constant speed compressors 63,67 simultaneously, the constant speed compressor 67 that also can replace the constant speed compressor 63 of first off-premises station 21 to drive in second and third off- premises stations 22,23 according to the load of judging.
The existing pressure S40 of goal pressure that control part is relatively set and constant speed compressor when goal pressure is bigger, transfers to the stage S50 that drives frequency-changeable compressor 62, when existing pressure surpasses goal pressure, continues to drive the constant speed compressor 63 that is driving.
The compressor control method of multi-split air conditioner, also comprise: after the driving stage S50 of frequency-changeable compressor, be judged as and make the goal pressure and the difference of existing pressure and the stage S60 that judgement indoor set institute capacity required changes, temperature conditions changes that drives frequency-changeable compressor 62; Capacity according to frequency-changeable compressor is judged the load of being judged among the stage S60, with the frequency increase of frequency-changeable compressor 62 or stage S70, the S80 that reduces.
Frequency-changeable compressor 62 is judged the load of being judged among the stage S60 according to the capacity of frequency-changeable compressor, adjusts compression volume S70, the S80 of its refrigerant on a small quantity.
Whether the existing pressure of judging goal pressure and compressor 62,63 refrigerants of discharging according to the driving of frequency-changeable compressor 62 identical S90, satisfies the load S100 of indoor set if goal pressure with to show pressure identical, then continues drive compression machine 62,63.
And, judge the driving quantity of indoor set and the indoor temperature conditions S110 that whether changes by control part, if the driving quantity and the temperature conditions of indoor set change, then get back to indoor capacity once more and judge stage S10 and repeat said process.If the driving quantity of indoor set and temperature conditions do not change, then continue drive compression machine 62,63 and goal pressure and existing pressure are consistent.
Therefore, when the method by as above drove the compressor of multi-split air conditioner, as shown in Figure 4, the constant speed compressor 63,67 of some was born certain load, and remaining load is born by frequency-changeable compressor 62.
Describe as follows by example with 30 horsepowers multi-split air conditioners: it is 8 horse-power-hours that the initial stage indoor set is required load, and the constant speed compressor 63 that at first drives first off-premises station 21 is born 3 horsepowers load, and remaining 5 horsepower loadings are born by frequency-changeable compressor 62.When the indoor load that requires is increased to 14 horse-power-hours, continue to drive the constant speed compressor of first off-premises station 21, append the constant speed compressor 67 that drives second off-premises station 22 again and bear 5 horsepowers load, the load of frequency-changeable compressor 62 is increased to 6 horsepowers simultaneously.
Require to load for only driving 13 horse-power-hours that constant speed compressor 63,67 also can satisfy when indoor, only the constant speed compressor 63,67 with first and second off- premises station 21,22 satisfies load, and the driving of frequency-changeable compressor 62 becomes minimum.
In addition, the constant speed compressor 63,67 that is driven at the driving stage of constant speed compressor S30 can be by the certain sequence that is input into control part driven mutually.And when frequency-changeable compressor 62 produced faults, control part drove and replaces the constant speed compressor 67 of frequency-changeable compressor to bear indoor load, and to being arranged on the fault message that display unit on indoor set or the off-premises station shows relevant frequency-changeable compressor.
Claims (4)
1, a kind of compressor operation method of multi-split air conditioner comprised successively with the next stage: the stage (S10) of judging the quantity and the load capacity that indoor set is required of the indoor set that driven in a plurality of indoor sets; Require the capacity of loading to set the goal pressure stage (S20) of compressor according to indoor set; Goal pressure is set the stage (S20) afterwards, the stage (S40) of the existing pressure of stage (S30) the comparison object pressure of at least one and the constant speed compressor that drives in the constant speed compressor of driving off-premises station; The goal pressure of setting drives the stage (S50) of frequency-changeable compressor during greater than existing pressure again.
2, the compressor operation method of multi-split air conditioner according to claim 1 is characterized in that, the constant speed compressor that is driven in the driving stage of constant speed compressor (S30) is the mutual driven of a plurality of compressors.
3, the compressor operation method of multi-split air conditioner according to claim 1, it is characterized in that, in the driving stage of frequency-changeable compressor (S50), when frequency-changeable compressor produced fault, at least one that drives again in the residue constant speed compressor replaced the load of frequency-changeable compressor.
4, the compressor operation method of multi-split air conditioner according to claim 1 is characterized in that, judging that according to indoor capacity stage (S10) load of being judged drives the stage (S30) of constant speed compressor, is to drive a plurality of constant speed compressors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610014105 CN101086371A (en) | 2006-06-06 | 2006-06-06 | Compressor operation method of multi-split air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610014105 CN101086371A (en) | 2006-06-06 | 2006-06-06 | Compressor operation method of multi-split air conditioner |
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| CN101086371A true CN101086371A (en) | 2007-12-12 |
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| CN 200610014105 Pending CN101086371A (en) | 2006-06-06 | 2006-06-06 | Compressor operation method of multi-split air conditioner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180372A (en) * | 2015-09-29 | 2015-12-23 | Tcl空调器(中山)有限公司 | Method and device for controlling air conditioner |
| CN106052230A (en) * | 2016-06-13 | 2016-10-26 | 深圳市紫衡技术有限公司 | Energy-saving control method for shopping mall and supermarket cold chain systems |
| CN107143979A (en) * | 2017-05-22 | 2017-09-08 | 青岛海尔空调器有限总公司 | Control method, control device and the air conditioner of multi-split air conditioner |
| CN107860103A (en) * | 2017-10-27 | 2018-03-30 | 广东美的暖通设备有限公司 | The control method of multiple on-line system, device and there is its system |
| CN110578991A (en) * | 2019-09-16 | 2019-12-17 | 海信（山东）空调有限公司 | Control method and device of air conditioner capacity mode, air conditioner and readable storage medium |
| WO2020224037A1 (en) * | 2019-05-07 | 2020-11-12 | 珠海格力电器股份有限公司 | Control method and device for multi-split air conditioning system |
-
2006
- 2006-06-06 CN CN 200610014105 patent/CN101086371A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180372A (en) * | 2015-09-29 | 2015-12-23 | Tcl空调器(中山)有限公司 | Method and device for controlling air conditioner |
| CN105180372B (en) * | 2015-09-29 | 2018-07-31 | Tcl空调器(中山)有限公司 | Air-conditioner control method and device |
| CN106052230A (en) * | 2016-06-13 | 2016-10-26 | 深圳市紫衡技术有限公司 | Energy-saving control method for shopping mall and supermarket cold chain systems |
| CN106052230B (en) * | 2016-06-13 | 2018-06-05 | 深圳市紫衡技术有限公司 | A kind of market supermarket cold chain system energy-saving control method |
| CN107143979A (en) * | 2017-05-22 | 2017-09-08 | 青岛海尔空调器有限总公司 | Control method, control device and the air conditioner of multi-split air conditioner |
| CN107143979B (en) * | 2017-05-22 | 2019-11-05 | 青岛海尔空调器有限总公司 | Control method, control device and the air conditioner of multi-split air conditioner |
| CN107860103A (en) * | 2017-10-27 | 2018-03-30 | 广东美的暖通设备有限公司 | The control method of multiple on-line system, device and there is its system |
| CN107860103B (en) * | 2017-10-27 | 2020-04-03 | 广东美的暖通设备有限公司 | Control method and device of multi-split system and system with control device |
| WO2020224037A1 (en) * | 2019-05-07 | 2020-11-12 | 珠海格力电器股份有限公司 | Control method and device for multi-split air conditioning system |
| CN110578991A (en) * | 2019-09-16 | 2019-12-17 | 海信（山东）空调有限公司 | Control method and device of air conditioner capacity mode, air conditioner and readable storage medium |
| CN110578991B (en) * | 2019-09-16 | 2021-02-09 | 海信（山东）空调有限公司 | Control method and device of air conditioner capacity mode, air conditioner and readable storage medium |
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Open date: 20071212 |