CN101086366A - Multi-split air conditioner and control method thereof - Google Patents
Multi-split air conditioner and control method thereof Download PDFInfo
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- CN101086366A CN101086366A CN 200610014098 CN200610014098A CN101086366A CN 101086366 A CN101086366 A CN 101086366A CN 200610014098 CN200610014098 CN 200610014098 CN 200610014098 A CN200610014098 A CN 200610014098A CN 101086366 A CN101086366 A CN 101086366A
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Abstract
The invention discloses a trailer multi-type air-conditioner and a control method. The method comprises the following steps: the first step, judging if the set condition is met when an indoor machine is heat-producing lonely; the second step, opening a plurality of indoor machine expansion valves which isn't started when the set condition is met, sealing a plurality of the indoor machine expansion valves and cutting off the coolant supply to the indoor machine when the set condition isn't met. The trailer multi-type air-conditioner comprises the following parts: an indoor machine micro computer for controlling the indoor machine, an outdoor machine micro computer section for controlling the control signal of the indoor machine expansion valve. The invention avoids that the system rises to the high pressure state, which makes the system start normally under the part load.
Description
Technical field
The present invention relates to a kind of air-conditioner.Particularly relating to an a kind of indoor set heats separately when turning round, open the expansion valve of some other indoor sets of halted state, by increasing the area of condenser, the pressure of anti-locking system rises to high pressure conditions, has improved the one-driven-several type air-conditioner and the control method thereof of reliability and stability thus.
Background technology
Usually, air-conditioner mainly is by with certain refrigerant compression, evaporation and condensation, when utilizing refrigerant evaporation thus and the heat exchange of surrounding air, produce cold air, and utilize fan that cold air is blown to indoor refrigerating plant, use to have more widely and possessing several independently on the building of the interior space, each is indoor all to be provided with indoor set respectively, and utilizes an off-premises station to connect the one-driven-several type air-conditioner of all indoor sets.
Recently, along with also possessing the compression that utilizes refrigerant is arranged, the inverse process of evaporation and condensation, during by the refrigerant condensation and the surrounding air heat exchange, produce hot gas, and utilizing fan that hot gas is outputed to popularizing of air-conditioner that the changes in temperature of indoor heat-production functions have both, air-conditioner all is applied to adjust the temperature of indoor environment throughout the year.
Fig. 4 is the external structure schematic diagram of general one-driven-several type air-conditioner, and Fig. 5 is the formation structural representation of general air-conditioner.
As shown in Figure 4, general one-driven-several type air-conditioner is made up of indoor set 7 and off-premises station 6.
As shown in Figure 5, general air-conditioner is divided into off-premises station 6 and indoor set 7 haply.Off-premises station 6 comprises: the compressor 1 that is used for compression refrigerant; Be used to switch the cross valve 2 of refrigerating/heating running; The expansion valve 3 that refrigerant is expanded for the temperature that reduces refrigerant; Be used to evaporate the outdoor heat converter 4 of refrigerant; The heat that outdoor heat converter 4 is discharged outputs to outdoor outdoor fan 5.
Air-conditioner is according to the switching of cross valve 2, change the loop direction of refrigerant, carry out cooling operation thus or heat running, when air-conditioner heated running, the refrigerant of compressor 1 compression was through cross valve 2, indoor heat converter 8, expansion valve 3, outdoor heat converter 4 flows, and condensation on indoor heat converter 8, to indoor release heat.Air-conditioner heat the running opposite with cooling operation, the heat exchanger of off-premises station 6 plays the effect of evaporimeter, the heat exchanger 8 of indoor set 7 plays the effect of condenser.
But,, on an off-premises station, utilize single pipe arrangement to connect some indoor sets when air-conditioner is during at each indoor one-driven-several type air-conditioner that is provided with indoor set 7 respectively.When an indoor set heated running separately, if the indoor temperature height, the capacity that plays the indoor set of condenser effect played the off-premises station deficiency of evaporimeter effect relatively, causes intrasystem refrigerant to reach high pressure conditions, thereby can't turn round normally thus.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of when an indoor set heats running separately, open the expansion valve of some other indoor sets of halted state, by increasing the area of condenser, the pressure of anti-locking system rises to high pressure conditions, has improved the one-driven-several type air-conditioner and the control method thereof of reliability and stability thus.
The technical solution adopted in the present invention is: a kind of one-driven-several type air-conditioner and control method thereof, described control method is in the one-driven-several type air-conditioner that the single pipe arrangement of off-premises station and indoor set utilization is connected, comprise: when an indoor set heats running separately, judge whether to meet the 1st stage that imposes a condition; When satisfying when imposing a condition, open the expansion valve of several indoor sets that are not activated, and, seal the expansion valve of several indoor sets when not satisfying when imposing a condition, cut off the 2nd stage that refrigerant is fed to indoor set.
Described imposing a condition comprises: the frequency that frequency-changeable compressor is minimum is below the 30Hz; The startup ratio of indoor set is below 10%; Pressure is more than 2300kpa.
Open the expansion valve of several indoor sets that are not activated in described the 2nd stage, be meant the expansion valve of opening all indoor sets that are connected with off-premises station.
Described one-driven-several type air-conditioner comprises: the indoor set micro computer that is used to control indoor set; Heat when running separately at an indoor set, judge whether to meet the condition of setting in order to open several expansion valves, when meeting when imposing a condition, the off-premises station micro computer portion that sends the control signal of opening several indoor set expansion valves constitutes.
Described imposing a condition comprises: the frequency that frequency-changeable compressor is minimum is below the 30Hz; The startup ratio of indoor set is below 10%; Pressure is more than 2300kpa.
In the described one-driven-several type air-conditioner, utilize single pipe arrangement to connect several indoor sets on the off-premises station.
One-driven-several type air-conditioner of the present invention and control method thereof are in the air-conditioner that the single pipe arrangement of off-premises station and indoor set utilization is connected, when an indoor set heats running separately, at first whether judgement system meets and rises to imposing a condition of high pressure conditions, when satisfying when reaching the condition of high pressure conditions, open the expansion valve of several indoor sets that are not activated, increase the area of condenser, prevented that thus system from rising to high pressure conditions, system also can normally be started under sub-load.
Description of drawings
Fig. 1 is the structural representation that is provided with of one-driven-several type air-conditioner of the present invention;
Fig. 2 is the composition structural representation of one-driven-several type air-conditioner of the present invention;
Fig. 3 is the flow chart of the control method of one-driven-several type air-conditioner of the present invention;
Fig. 4 is the external structure schematic diagram of general one-driven-several type air-conditioner;
Fig. 5 is the formation structural representation of general air-conditioner.
Wherein:
100: off-premises station 200: indoor set
300: condition of high voltage judging part 400: master control part
500: expansion valve control part 600: off-premises station micro computer portion
700: indoor set micro computer portion 800: expansion valve
The specific embodiment
Below, describe one-driven-several type air-conditioner of the present invention and control method thereof in conjunction with the accompanying drawings and embodiments in detail.
Fig. 1 is the structural representation that is provided with of one-driven-several type air-conditioner of the present invention, and Fig. 2 is the composition structural representation of one-driven-several type air-conditioner of the present invention.
One-driven-several type air-conditioner provided by the invention is divided into off-premises station 100 and indoor set 200 as shown in Figure 1 and Figure 2 haply, and off-premises station 100 comprises off-premises station micro computer portion 600, and off-premises station micro computer portion 600 comprises: the master control part 400 of house steward's control; Judged whether to reach the condition of high voltage judging part 300 that produces condition of high voltage; The expansion valve control part 500 that sends the signal of control expansion valve 800 constitutes.
The course of action of the present invention of Gou Chenging is as follows as mentioned above.
Fig. 3 is the flow chart of the control method of one-driven-several type air-conditioner of the present invention.
S100 when one-driven-several type air-conditioner heats running, under the situation of having only an indoor set 200 to start separately, condition of high voltage judging part 300 judges whether to have reached and imposes a condition.
Condition of high voltage judging part 300 reaches high pressure conditions in order to prevent refrigerant, judges whether in advance to have reached to impose a condition, and opposite with cooling operation when heating running, off-premises station 100 plays the effect of evaporimeter, and indoor set 200 plays the effect of condenser.The refrigerant of the HTHP by indoor set 200 carries out heating for indoor environment by room air cooling and condensation in this process.But when having only an indoor set to heat running separately, because the deficiency of condenser, refrigerant will rise to high pressure conditions, and system can't normally start, and therefore need above-mentioned deterministic process.
The condition that condition of high voltage judging part 300 is judged comprises: whether frequency-changeable compressor is with minimum frequency run S200; Whether the startup ratio of indoor set is at 10% following S300; Whether pressure is at the above S400 of 2300kpa.
When frequency-changeable compressor with the running ratio of low-limit frequency running or indoor set below 10% or pressure when 2300kpa is above, the system of being judged as will rise to high pressure conditions, and in contrast, the running ratio that is higher than low-limit frequency or indoor set when the operating frequency of frequency-changeable compressor is higher than 10% or pressure when not reaching 2300kpa, then be judged as the area that there is no need to increase condenser, therefore the expansion valve S700 of the relevant indoor set of sealing.
Condition of high voltage judging part 300 judging whether to have reached and impose a condition as above, and reaching when imposing a condition, condition of high voltage judging part 300 sends signal for master control part 400.Receive that the master control part 400 of the signal of condition of high voltage judging part 300 sends control signal for expansion valve control part 500.The expansion valve control part 500 of the signal of reception master control part 400 passes to the opening signal of expansion valve 800 on several indoor sets 200.
Thus, open expansion valve 800, S500 after the signal that each the reception off-premises station micro computer portion of indoor set micro computer portion on several indoor sets 200 transmits.
Then, 300 continuous the judging whether of condition of high voltage judging part reach and impose a condition, whether the pressure of promptly judging system has dropped to the following S600 of 2000kpa, if do not dropped to below the 2000kpa, whether then judge frequency-changeable compressor continuously with low-limit frequency running S200, whether the running ratio of indoor set is at 10% following S300, and whether pressure is at the above S400 of 2300kpa, when not reaching above-mentioned condition, the condition of high voltage judging part 300 of off-premises station 100 sends signal for once more master control part 400.
The order that master control part 400 sends sealing indoor set expansion valve 800 for expansion valve control part 500, and this order will be passed to indoor micro computer portion.Under the control of indoor set micro computer, except the indoor set of individual operation, the expansion valve of several indoor sets 200 that those start for the capacity that increases condenser all seals S700.
As mentioned above, according to the condition judgment of setting, by opening or seal expansion valve, increase and decrease is at the area of the condenser that heats the indoor set 200 that plays the condenser effect when turning round, prevented that in advance one-driven-several type air-conditioner from reaching the phenomenon of high pressure, one-driven-several type air-conditioner also can be turned round normally heating under the sub-load of running.
Claims (6)
1. the control method of an one-driven-several type air-conditioner in the one-driven-several type air-conditioner that the single pipe arrangement of off-premises station and indoor set utilization is connected, is characterized in that, comprising: when an indoor set heats running separately, judge whether to meet the 1st stage that imposes a condition; When satisfying when imposing a condition, open the expansion valve of several indoor sets that are not activated, and, seal the expansion valve of several indoor sets when not satisfying when imposing a condition, cut off the 2nd stage that refrigerant is fed to indoor set.
2. the control method of one-driven-several type air-conditioner according to claim 1 is characterized in that, described imposing a condition comprises: the frequency that frequency-changeable compressor is minimum is below the 30Hz; The startup ratio of indoor set is below 10%; Pressure is more than 2300kpa.
3. the control method of one-driven-several type air-conditioner according to claim 1 is characterized in that, opens the expansion valve of several indoor sets that are not activated in described the 2nd stage, is meant the expansion valve of opening all indoor sets that are connected with off-premises station.
4. an one-driven-several type air-conditioner is characterized in that, comprising: the indoor set micro computer that is used to control indoor set (200); Heat when running separately at an indoor set, judge whether to meet in order to open several expansion valves and impose a condition, when meeting when imposing a condition, the off-premises station micro computer portion (600) that sends the control signal of opening several indoor set expansion valves constitutes.
5. one-driven-several type air-conditioner according to claim 4 is characterized in that, described imposing a condition comprises: the frequency that frequency-changeable compressor is minimum is below the 30Hz; The startup ratio of indoor set is below 10%; Pressure is more than 2300kpa.
6. one-driven-several type air-conditioner according to claim 4 is characterized in that, in the described one-driven-several type air-conditioner, utilizes single pipe arrangement to connect several indoor sets on the off-premises station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610014098 CN101086366A (en) | 2006-06-06 | 2006-06-06 | Multi-split air conditioner and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610014098 CN101086366A (en) | 2006-06-06 | 2006-06-06 | Multi-split air conditioner and control method thereof |
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| CN101086366A true CN101086366A (en) | 2007-12-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592387A (en) * | 2008-05-29 | 2009-12-02 | 乐金电子(天津)电器有限公司 | The control method of multiple air-conditioner indoor machine during heating |
| CN101614430A (en) * | 2008-06-24 | 2009-12-30 | 乐金电子(天津)电器有限公司 | One method for controlling electromagnetic valve of tri-zone air conditioner indoor unit |
| CN102032648A (en) * | 2010-12-07 | 2011-04-27 | 海信（山东）空调有限公司 | Refrigerant flow control method for multi-connected air-conditioning system during heating |
| CN104976732A (en) * | 2014-04-10 | 2015-10-14 | 珠海格力电器股份有限公司 | Control method and system for multi-split outdoor unit |
| CN110749039A (en) * | 2019-10-17 | 2020-02-04 | 珠海格力电器股份有限公司 | Control method and device of multi-split system, storage medium and multi-split system |
| CN111595001A (en) * | 2020-05-18 | 2020-08-28 | 广东美的暖通设备有限公司 | Air conditioning system, control method thereof, control device thereof and readable storage medium |
-
2006
- 2006-06-06 CN CN 200610014098 patent/CN101086366A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101592387A (en) * | 2008-05-29 | 2009-12-02 | 乐金电子(天津)电器有限公司 | The control method of multiple air-conditioner indoor machine during heating |
| CN101614430A (en) * | 2008-06-24 | 2009-12-30 | 乐金电子(天津)电器有限公司 | One method for controlling electromagnetic valve of tri-zone air conditioner indoor unit |
| CN102032648A (en) * | 2010-12-07 | 2011-04-27 | 海信（山东）空调有限公司 | Refrigerant flow control method for multi-connected air-conditioning system during heating |
| CN102032648B (en) * | 2010-12-07 | 2012-12-05 | 海信（山东）空调有限公司 | Refrigerant flow control method for multi-connected air-conditioning system during heating |
| CN104976732A (en) * | 2014-04-10 | 2015-10-14 | 珠海格力电器股份有限公司 | Control method and system for multi-split outdoor unit |
| CN104976732B (en) * | 2014-04-10 | 2017-09-22 | 珠海格力电器股份有限公司 | The control method and control system of multi-joint outdoor unit |
| CN110749039A (en) * | 2019-10-17 | 2020-02-04 | 珠海格力电器股份有限公司 | Control method and device of multi-split system, storage medium and multi-split system |
| CN111595001A (en) * | 2020-05-18 | 2020-08-28 | 广东美的暖通设备有限公司 | Air conditioning system, control method thereof, control device thereof and readable storage medium |
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