CN101086374A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN101086374A CN101086374A CN 200610014145 CN200610014145A CN101086374A CN 101086374 A CN101086374 A CN 101086374A CN 200610014145 CN200610014145 CN 200610014145 CN 200610014145 A CN200610014145 A CN 200610014145A CN 101086374 A CN101086374 A CN 101086374A
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- compressor
- expansion valve
- electric expansion
- air
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Abstract
The invention discloses an air conditioner and controlling method, which comprises the following steps: changing the opening value of electronic bulking valve before driving the second compressor according to rising condition of heating load; driving the second compressor under control order precisely. Therefore, the invention reduces the energy consumption due to fail driving of the second compressor, which improves the effect of convenience of the product.
Description
Technical field
The present invention relates to air-conditioner and control method thereof.Particularly, relate to when the load of using a compressor and cooling and heating at least rises, the setting opening value of change electric expansion valve, and regulate the flow supply at least one compressor, thereby the air-conditioner and control method { the Air conditioner and thecontrolling method} thereof of at least one compressor in can stable driving stopping using.
Background technology
Fig. 1 is the skeleton diagram that shows the part-structure of prior art air-conditioner.
As shown in Figure 1, be benchmark for blowdown firing, the air-conditioner of prior art is by constituting as the lower part: the compressor 2 that refrigerant is compressed into the gaseous coolant of HTHP; The outdoor heat converter 4 of the liquid refrigerants of warm high pressure in will being condensed into by the refrigerant of compressor 2; To expand into the electric expansion valve 6 of low-temp low-pressure refrigerant by the refrigerant of outdoor heat converter 4; To become the indoor heat converter 8 of the gaseous coolant of low-temp low-pressure by the refrigerant evaporation of electric expansion valve 6; Be arranged on the front end of compressor 2, and collect the reservoir 10 of liquid refrigerants; Be arranged on the rear end of compressor 2, and in cooling and heating, regulate the reversal valve 22 that refrigerant flows.
In the above-mentioned air-conditioner, refrigerant circulates in compressor 2, outdoor heat converter 4, electric expansion valve 6, indoor heat converter 8.In the time of cooling, outdoor heat converter 4 and indoor heat converter 8 play the effect of condenser and evaporimeter respectively.On the contrary, in the time of heating, outdoor heat converter 4 and indoor heat converter 8 play the effect of evaporimeter and condenser respectively.
In addition, electric expansion valve 6 is regulated its opening value by stepper motor, thereby can be according to the flow of cooling and heating load adjusting refrigerant.Usually, when compressor 2 began to drive, electric expansion valve 6 was adjusted to the opening value of closed condition.
But in the air-conditioner of prior art, before compressor drove once more, in order to reduce the pressure balance time of compressor, electric expansion valve was adjusted to the opening value when opening fully.Then, after compressor drives once more, readjust into the opening value of closed condition.Therefore, exist auxiliary running time of electric expansion valve elongated, again required time of drive compression machine elongated or restart the problem of failure.
Summary of the invention
The present invention proposes in order to address the above problem.The object of the invention is, in the air-conditioner and control method thereof that is provided, its air-conditioner possesses first compressor and second compressor, in first driven compressor, when cooling and heating load rise, before second driven compressor in the given time section, stop the running of electric expansion valve, change the setting opening value of electric expansion valve simultaneously, drive the required time of second compressor, and can prevent the driving failure of second compressor thereby reduce.
To achieve these goals, the control method of the air-conditioner that possesses first compressor and second compressor involved in the present invention is by being constituted as the next stage: electric expansion valve is adjusted to the setting opening value, and refrigerant is supplied to the stage of first compressor; In first driven compressor,, in given time T, stop the stage of electric expansion valve in order to drive second compressor; In given time T, the stage of the setting opening value of change electric expansion valve; After second driven compressor, electric expansion valve is regulated the flow of refrigerant according to the opening value that is changed, and refrigerant is supplied to the stage of first compressor and second compressor.
Air-conditioner of the present invention of Gou Chenging and control method thereof have following effect as mentioned above: when any one in first compressor and second compressor driving, when whether driving first compressor in shutting down and in second compressor any one according to the rising of cooling and heating load, opening value by control change electric expansion valve can drive the compressor in stopping accurately under control instruction.Therefore, the present invention has the effect of the electric consumption that reduction causes by the driving of second compressor failure, can also improve the effect of the convenience of user when using product.
Description of drawings
Fig. 1 is the skeleton diagram that shows the part-structure of prior art air-conditioner.
Fig. 2 is the skeleton diagram that shows the part-structure of air-conditioner of the present invention.
Fig. 3 shows the pulse signal waveform figure that supplies to air-conditioner partial component of the present invention.
Fig. 4 is the block diagram that shows the part-structure of air-conditioner of the present invention.
Fig. 5 is the flow chart that shows air-conditioner of the present invention and control method thereof.
Accompanying drawing major part description of symbols:
12: the second compressors of 10: the first compressors
14: outdoor heat converter 16: electric expansion valve
18: indoor heat converter 20: reservoir
22: reversal valve 40: measurement section
50: driven compressor portion 60: the electric expansion valve drive division
70: outdoor fan drive division 80: control part
The specific embodiment
Below, be described with reference to the accompanying drawings specific embodiments of the invention.
Fig. 2 is the skeleton diagram that shows a part of structure of air-conditioner of the present invention.
As shown in Figure 2, be benchmark for blowdown firing, air-conditioner of the present invention is by being constituted as the lower part: first compressor 10 of compression, condensation, expansion refrigerant and second compressor 12, outdoor heat converter 14, electric expansion valve 16 and indoor heat converter 18; Be arranged on the front end of first compressor 10 and second compressor 12, and filter the reservoir 20 of the liquid refrigerants that comprises in the refrigerant that sucks; Be arranged on the rear end of first compressor 10 and second compressor 12, and in cooling and heating, regulate the reversal valve 22 that flows of refrigerant.
Here, in cooling, outdoor heat converter 14 and indoor heat converter 18 play the effect of condenser and evaporimeter respectively.On the contrary, in heating, outdoor heat converter 14 and indoor heat converter 18 play the effect of evaporimeter and condenser respectively.
The capacity of first compressor 10 and second compressor 12 can be identical, also can be different.And, can optionally drive according to the load capacity in cooling and when heating.
Fig. 3 shows the pulse signal waveform figure that supplies to air-conditioner partial component of the present invention.
In showing among Fig. 3 that first compressor 10 drives, because the load when cooling and heating rises when needing driving second compressor 12 timing chart in the given time T section before 12 drivings of second compressor.
Very first time T1 is before second compressor 12 drives, and based on the first pulse signal F1, the interval that electric expansion valve 16 shuts down also is the driving time interval of judging second compressor 12.
Second time T 2 is after the first pulse signal F1 finishes, and compares and measures the outdoor temperature that and the time interval of design temperature.When if outdoor temperature is lower than design temperature, stop outdoor fan by the second pulse signal F2.
The 3rd time T 3 is after the second pulse signal F2 finishes, the 3rd pulse signal F3 that transmits change electric expansion valve 16 setting opening values changes the time interval that electric expansion valve 16 is set opening values simultaneously, also is the time interval that second compressor 12 and outdoor fan drive.
Fig. 4 is the block diagram that shows the part-structure of air-conditioner of the present invention.As shown in Figure 4, air-conditioner of the present invention is by being constituted as the lower part: the measurement section 40 that the sensor that can measure outdoor temperature is set; Drive the driven compressor portion 50 of first compressor 10 and second compressor 12; Drive electric expansion valve 16 and regulate the electric expansion valve drive division 60 of its aperture; The outdoor fan drive division 70 of drive chamber's external fan (not shown); According to cooling and heating load, control electric expansion valve drive division 60 is to regulate the control part 80 of opening value.
Measurement section 40 is measured outdoor temperature, and is delivered to control part 80.
Driven compressor portion 50 according to the control of control part 80, drives first compressor 10 and second compressor 12 according to the variation of cooling and heating load.Here, at the air-conditioner start of run, 50 of driving in first compressor 10 and second compressor 12 of driven compressor portion.
Electric expansion valve drive division 60 is according to the control instruction of control part 80, by regulating the power supply of supplying with electric expansion valve 16, the aperture of regulating electric expansion valve.At this moment, electric expansion valve drive division 60 is regulated the cold medium flux of refrigerant pipe by the opening value of change setting.
When the outdoor temperature that measurement section 40 is measured was lower than design temperature, outdoor fan drive division 70 was received the control instruction that control part 80 sends, the driving of conditioning chamber external fan.
Whether the rising that control part 80 is distinguished cooling and heating load and compares and measures outdoor temperature and the design temperature that portion 40 measures.At this moment, if outdoor temperature is higher than design temperature, control part 80 can not send the control instruction that the control room external fan drives to outdoor fan drive division 70.In addition, if outdoor temperature is lower than design temperature, control part 80 is by the state of outdoor fan drive division 70 conditioning chamber external fans, makes itself and original opposite states.
Here, control part 80 drives in first compressor 10 and second compressor 12 at least one by driven compressor portion.And, when cooling and heating load rise, first compressor 10 and second compressor 12 are all driven.
In the time of first compressor 10 and second compressor, 12 whole drivings, control part 80 sends control instruction to electric expansion valve drive division 60, thus the setting opening value of change electric expansion valve 16.
Here, control part 80 is controlled the driving of electric expansion valve 16 and outdoor fan in given time T.And in given time T, make first compressor 10 that driving and any one Continuous Drive in second compressor 12.
The operation process of the present invention of Gou Chenging is as follows as mentioned above.
Fig. 5 is the flow chart that shows air-conditioner of the present invention and control method thereof.
As shown in Figure 5, in the control method of air-conditioner of the present invention, connect after the power supply, any one in first compressor and second compressor is driven (S100).
Here, connect after the power supply, control part 80 is controlled any one that driven compressor portion 50 drives in first compressors 10 and second compressor 20 according to the instruction of input.And control part 80 is according to the setting opening value of electric expansion valve 16, by control electric expansion valve drive division 60, the aperture of control electric expansion valve 16.
In the time of any one driving in first compressor and second compressor, whether judge (S105) according to the rising of cooling and heating load.
Here, in the given time T, control electric expansion valve and outdoor fan.In the very first time T1, according to the rising of cooling and heating load, first compressor during judgement stops and the driving (S110) of second compressor.
Here, in order to judge the driving of any one in first compressor 10 and second compressor 12 in the very first time T1 in given time T, control part 80 sends command signal to outdoor fan drive division 70.At this moment, electric expansion valve 16 shuts down.
At this moment, electric expansion valve drive division 60 utilizes the first pulse signal F1 that transmits by control part 80 to stop the driving of electric expansion valve 16.
When cooling and heating load rise, measure outdoor temperature, after the outdoor temperature and design temperature that compares and measures, the driving (S115) of control part 80 control room external fans.
At this moment, when the outdoor temperature of measurement was higher than design temperature, control part 80 was kept the driving of outdoor fan by outdoor fan drive division 70.When the outdoor temperature of measuring was lower than design temperature, the control instruction that control part 80 will stop the driving of outdoor fan was delivered to outdoor fan drive division 70.
In second time T 2, receive the second pulse signal F2, and the setting opening value (S120) of change electric expansion valve 16.
Here, in second time T 2, control part 80 is delivered to electric expansion valve drive division 60 with the second pulse signal F2, and the setting opening value of control change electric expansion valve 16.
At this moment, outdoor fan drive division 70 stopped or drive chamber's external fan in the moment that the second pulse signal F2 finishes.
In the 3rd time T 3, transmit the 3rd pulse signal F3, thereby drive electric expansion valve 16 (S125) based on the opening value of electric expansion valve 16 changes.
Here, in the 3rd time T 3, control part 80 is delivered to electric expansion valve drive division 60 according to the opening value of the change of electric expansion valve 16 with the 3rd pulse.At this moment, control part 80
At this moment, electric expansion valve drive division 60 drives electric expansion valve 16 according to the 3rd pulse signal F3, thereby by regulating the aperture of electric expansion valve, regulates the flow of the refrigerant that supplies to first compressor 10 and second compressor 12.
Abovely air-conditioner among the present invention and control method thereof are illustrated with reference to accompanying drawing, but the present invention is defined in aforesaid embodiment, in the category that does not exceed basic fundamental thought of the present invention, the technical staff of relevant industries can carry out various deformation and application to it, and the above-mentioned distortion of carrying out and use and all to be under the jurisdiction of claim scope of the present invention.
Claims (8)
1, a kind of control method of air-conditioner, the air-conditioner that relates to possess first compressor and second compressor, it is characterized in that, the control method of air-conditioner comprises:
Electric expansion valve is adjusted to the setting opening value, and refrigerant is supplied to the stage of first compressor;
In first driven compressor,, in given time T, stop the stage of electric expansion valve in order to drive second compressor;
In given time T, the stage of the setting opening value of change electric expansion valve;
After second driven compressor, electric expansion valve is regulated the flow of refrigerant according to the opening value that is changed, and refrigerant is supplied to the stage of first compressor and second compressor.
2, the control method of air-conditioner according to claim 1 is characterized in that also including:
When outdoor temperature is lower than design temperature, in given time T, stop the stage of outdoor fan.
3, the control method of air-conditioner according to claim 1 is characterized in that, given time T is made of following time interval: the very first time T1 that is used to judge second driven compressor; Second time T 2 of the setting opening value of change electric expansion valve; Electric expansion valve is according to the 3rd time T 3 of the opening value entry into service of change.
4, the control method of air-conditioner according to claim 3 is characterized in that, in very first time T1, judges the driving of second compressor by first pulse signal.
5, the control method of air-conditioner according to claim 4 is characterized in that, first pulse signal produces according to the rising of cooling and heating load.
6, the control method of air-conditioner according to claim 3 is characterized in that, in second time T 2, by the setting opening value of second pulse signal change electric expansion valve.
7, the control method of air-conditioner according to claim 3 is characterized in that, in the 3rd time T 3, electric expansion valve begins to drive according to the opening value of change, and second compressor also drives.
8, the control method of air-conditioner according to claim 6 is characterized in that, after second driven compressor, electric expansion valve is kept the opening value of change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100141452A CN101086374B (en) | 2006-06-07 | 2006-06-07 | Air conditioner and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100141452A CN101086374B (en) | 2006-06-07 | 2006-06-07 | Air conditioner and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101086374A true CN101086374A (en) | 2007-12-12 |
| CN101086374B CN101086374B (en) | 2011-02-23 |
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ID=38937467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100141452A Expired - Fee Related CN101086374B (en) | 2006-06-07 | 2006-06-07 | Air conditioner and control method thereof |
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| Country | Link |
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| CN (1) | CN101086374B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103884083A (en) * | 2014-03-26 | 2014-06-25 | 上海新储集成电路有限公司 | Energy-saving environment-friendly intelligent air conditioning system and work mode thereof |
| CN104566638A (en) * | 2013-10-23 | 2015-04-29 | 日立空调·家用电器株式会社 | Air conditioner |
| CN106288237A (en) * | 2016-10-10 | 2017-01-04 | 芜湖美智空调设备有限公司 | The halt control method of a kind of air-conditioner, control device and air-conditioner |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100382488B1 (en) * | 2000-11-10 | 2003-05-09 | 엘지전자 주식회사 | Method for controlling Linear Expantion Valve of air conditioner with 2 compressors |
| KR100405986B1 (en) * | 2001-02-26 | 2003-11-15 | 엘지전자 주식회사 | Air conditioning system and method |
| KR100471441B1 (en) * | 2002-07-03 | 2005-03-08 | 엘지전자 주식회사 | Compressors' Operating Method in Air Conditioner Using Two Compressors |
| KR100484813B1 (en) * | 2002-09-13 | 2005-04-22 | 엘지전자 주식회사 | Linear expansion valve of heat pump system using multi compressors |
| KR100457569B1 (en) * | 2002-11-22 | 2004-11-18 | 엘지전자 주식회사 | a linear expansion valve's control method for a heat pump system |
| KR100471453B1 (en) * | 2002-11-22 | 2005-03-08 | 엘지전자 주식회사 | a heat pump system and a linear expansion valve's control method for the same |
-
2006
- 2006-06-07 CN CN2006100141452A patent/CN101086374B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566638A (en) * | 2013-10-23 | 2015-04-29 | 日立空调·家用电器株式会社 | Air conditioner |
| CN104566638B (en) * | 2013-10-23 | 2017-07-28 | 江森自控日立空调技术（香港）有限公司 | Air conditioner |
| CN103884083A (en) * | 2014-03-26 | 2014-06-25 | 上海新储集成电路有限公司 | Energy-saving environment-friendly intelligent air conditioning system and work mode thereof |
| CN103884083B (en) * | 2014-03-26 | 2016-06-15 | 上海新储集成电路有限公司 | A kind of energy-saving environment protection intelligent air conditioning system and working method thereof |
| CN106288237A (en) * | 2016-10-10 | 2017-01-04 | 芜湖美智空调设备有限公司 | The halt control method of a kind of air-conditioner, control device and air-conditioner |
| CN106288237B (en) * | 2016-10-10 | 2019-04-23 | 芜湖美智空调设备有限公司 | A kind of halt control method of air conditioner, control device and air conditioner |
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| Publication number | Publication date |
|---|---|
| CN101086374B (en) | 2011-02-23 |
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Granted publication date: 20110223 Termination date: 20130607 |