CN1220006C - Multiple system air conditioner and its control method - Google Patents
Multiple system air conditioner and its control method Download PDFInfo
- Publication number
- CN1220006C CN1220006C CNB021481180A CN02148118A CN1220006C CN 1220006 C CN1220006 C CN 1220006C CN B021481180 A CNB021481180 A CN B021481180A CN 02148118 A CN02148118 A CN 02148118A CN 1220006 C CN1220006 C CN 1220006C
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- temperature
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- open degree
- valve
- indoor set
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000003507 refrigerant Substances 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 239000002826 coolant Substances 0.000 claims description 12
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 3
- 230000009183 running Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A multi-chamber type air conditioner and a control method of the same are provided to control opening degree of an electromotive expansion valve of a stopped indoor unit to recover appropriate amount of oil and refrigerant for optimization of refrigerant cycle even when indoor temperature and outdoor temperature are radically changed at heating operation. An air conditioner includes a first temperature, an outdoor temperature sensor(17) connected with an outdoor unit, detecting unit detecting temperature of outdoor air; a second temperature detecting unit, an outdoor heat exchanger inlet temperature sensor(15) connected with a side of an inlet side refrigerant tube of the outdoor unit, detecting temperature of a tube of an outdoor heat exchanger(12); and a valve control unit controlling opening degree of a valve unit corresponding with a stopped indoor unit(13,23,33) based on difference of temperature detected by the first temperature detecting unit and the second temperature detecting unit.
Description
Technical field
Generally speaking, the present invention relates to multisystem air conditioner device and control method thereof; More particularly, relate to the multisystem air conditioner device and control the method for its electric expansion valve, described method can prevent that refrigerant is trapped in the indoor set, thereby improves the operating mode of compressor and kind of refrigeration cycle.
Background technology
Generally speaking, the multisystem air conditioner device comprises an off-premises station and a plurality of indoor set.In off-premises station, dispose compressor, cross valve, outdoor heat converter and electric expansion valve.In each indoor set, dispose an indoor heat converter respectively.Described compressor, cross valve, outdoor heat converter, electric expansion valve and indoor heat converter are connected with each other and constitute a cooling cycle system.The electric expansion valve is configured in the coolant channel between outdoor heat converter and the indoor heat converter.
When the multisystem air conditioner device carried out heating operation, the high-pressure refrigerant that compressor is discharged was got back to compressor by outdoor heat converter again by after cross valve, indoor heat converter and the electric expansion valve.
When the multisystem air conditioner device heats operation, if the electric expansion valve that links to each other with idle indoor set cuts out fully, then flowing of refrigerant will be blocked, and refrigerant can be trapped in the described indoor set.Because outside air temperature is lower than saturation temperature, will liquefies so be detained refrigerant, thereby the pressure that is detained refrigerant is reduced.Like this, the refrigerant of liquefaction will flow into idle indoor set, and the refrigerant of inflow work indoor set is reduced, and make it lack the supply of refrigerant.
For solving the problems referred to above of prior art multisystem air conditioner device, need make corresponding to the electric expansion valve of the indoor set of not working and keep a minimum open degree, perhaps make the electric expansion valve of the indoor set of not working close certain hour unlatching later on fully, thereby prevent to heat the delay of refrigerant in service in the indoor set of not working so that refrigerant flows out.
But drop to subzero 10 when taking the photograph formula and spending in outside air temperature, the grease that comprises in the refrigerant can not flow smoothly because of viscosity uprises, thereby causes the coolant channel of dynamo-electric expansion valve in the operating room not to block.
If adopting makes the electric expansion valve of the indoor set of not working maintain the problems referred to above that an opening degree greater than its minimum open degree solves prior art multisystem air conditioner device, then will there be a large amount of refrigerant to flow into idle indoor set, thereby will reduces the efficient of kind of refrigeration cycle.In addition, the electric expansion valve that links to each other with longer coolant channel need be kept a minimum open degree greater than specified open degree.Particularly when the multisystem air conditioner device comprises three or more indoor sets, be decided to be a constant, then can not make kind of refrigeration cycle be able to optimization if the minimum open degree of indoor set is put.
Summary of the invention
Just at the above-mentioned shortcoming of prior art and carried out this invention, purpose of the present invention just provides a kind of multisystem air conditioner device and control method thereof, air-conditioner that is provided and control method thereof can be controlled the open degree of dynamo-electric expansion valve in the operating room not, even under the sizable situation of the temperature difference between heating air conditioner room unit in service and the off-premises station, it also can make the grease of some and refrigerant reflux away, thereby improves the efficient of kind of refrigeration cycle.
For realizing above-mentioned target, the invention provides a kind of multisystem air conditioner device, comprising: an off-premises station that comprises outdoor heat converter; A plurality of indoor sets that link to each other with off-premises station; And can make the refrigerant in the respective chambers machine heat the valving that is back to off-premises station by indoor set in service, comprise that first temperature detecting unit that is used to detect outside air temperature, second temperature detecting unit that is used for sensing chamber's outer heat-exchanger temperature and one are used to control the control module of indoor set valve opening degree of not working, the basis that described control module is implemented control is the temperature difference that described first and second temperature detecting units detect.
In addition, the invention provides a kind of control method of multisystem air conditioner device, described multisystem air conditioner device comprises: an off-premises station that comprises outdoor heat converter; A plurality of indoor sets that link to each other with off-premises station; And can make the refrigerant in the respective chambers machine be back to the valving of off-premises station by indoor set in that heating is in service, described control method may further comprise the steps: detect outside air temperature; Sensing chamber's outer heat-exchanger temperature; Valve opening degree according to the definite indoor set of not working of the temperature difference between outside air temperature that is detected and the outdoor heat converter temperature; And according to the opening degree of determined open degree by-pass valve control.
Description of drawings
State making of the present invention above-mentionedly and other target, characteristic and advantage are more distinct below in conjunction with accompanying drawing auspicious, accompanying drawing comprises:
Fig. 1 shows the refrigerant cycle by multisystem air conditioner device heating operation of the present invention;
Fig. 2 shows the block diagram of multisystem air conditioner device of the present invention; And
Fig. 3 A and 3B show the not control method flow process of dynamo-electric expansion valve in the operating room of control multisystem air conditioner device of the present invention.
The specific embodiment
Now consult accompanying drawing, in institute's drawings attached, adopt same code name TYP or similar parts.
Below, will auspiciously in conjunction with the accompanying drawings state most preferred embodiment of the present invention.
Fig. 1 shows the refrigerant cycle of multisystem air conditioner device heating operation of the present invention.
Consult Fig. 1, the outlet side of compressor 10 links to each other with outdoor heat converter 12 by cross valve 11.Outdoor heat converter 12 links to each other with coolant channel W.Coolant channel W comprises refrigerant branch road W1, W3 and W3, and they link to each other with 33 with indoor heat converter 13,23 respectively.In refrigerant pathway 13,23 and 33, dispose electric expansion valve 14,24 and 34 respectively.Refrigerant flows by indoor heat converter 13,23 and 33 circulations are by the decision of the open degree of electric expansion valve 14,24 and 34.
The outdoor heat converter inlet temperature sensor 15 that is used for sensing chamber's outer heat-exchanger 12 temperature is configured in the entrance side of outdoor heat converter 12, indoor heat converter 13,23 and 33 refrigerant of discharging are by described inlet inlet chamber outer heat-exchanger 12, to the temperature detection of outdoor heat converter 12 is to realize that by the temperature that detection is positioned at the coolant channel W of outdoor heat converter 12 entrance sides promptly the temperature of Jian Ceing is the temperature of outdoor heat converter entrance side.
Room air temperature sensor 16,26 links to each other with 33 and outdoor heat converter 12 with indoor heat converter 13,23 respectively with outdoor temperature sensor 17 with 36, is used to detect the indoor air temperature in room, indoor set place and the outside air temperature of off-premises station.
Control by the valve control unit (not shown) that is installed in off-premises station corresponding to the electric expansion valve 14,24 of indoor heat converter 13,23 and 33 and 34 open degree.
Fig. 2 shows the structure by multisystem air conditioner device of the present invention.
As shown in Figure 2, outdoor control unit 40 comprises a microprocessor and peripheral circuit and can implement whole runnings of outdoor unit.Outdoor control unit 40 links to each other with 34 and cross valve 11, outdoor fan motor FM, outdoor air sensor 17 and converter circuit 70 with electric expansion valve 14,24.
70 pairs of converter circuits are commercial to be exchanged the voltages that (AC) power supplys 50 supply with and adjusts, and the instruction that can respond outdoor control unit 40 becomes adjusted voltage transitions the voltage of preset frequency.The output of converter circuit 70 offers the motor CM of compressor 10 as driving power.
Each indoor set B1, B2 and B3 comprise an indoor control unit 50.Indoor control unit 50 comprises a microprocessor and a peripheral circuit, and can implement whole runnings of each indoor set B1, B2 and B3.
Below, with the ruuning situation of explanation multisystem air conditioner device of the present invention.
Like this, outdoor control unit 40 is being controlled work or the open degree of dynamo-electric expansion valve in the operating room not by the running of valve control unit, thereby the air-conditioning ability of indoor set is controlled.In this case, outdoor control unit 40 can be controlled the open degree of electric expansion valve by 481 control steps, and 0 step was set at the electric expansion valve and is in complete closing state, and 480 steps were set at the state that the electric expansion valve is in complete opening.
Fig. 3 A and 3B show the not control method flow process of dynamo-electric expansion valve in the operating room of multisystem air conditioner device of the present invention.
Consult Fig. 3 A, at step S100, outdoor control unit 40 is by assert whether have one or more indoor sets to be in idle state with the information interchange of indoor control unit 50.
If assert to have idle indoor set, then outdoor control unit 40 is at the number of the further definite indoor set of not working of step S110.
If the number of definite indoor set of not working is 1, outdoor control unit 40 detects the outside air temperature of off-premises stations by outside air temperature sensor 17 at step S120.
At step S130, outdoor control unit 40 is by the temperature of outdoor heat converter inlet temperature sensor 15 sensing chamber's outer heat-exchangers 12 entrance sides.
After this at step S140, the temperature difference that outdoor control unit 40 is calculated between detected outside air temperatures and the outdoor heat converter 12 entrance side temperature.
After calculating the temperature difference, at step S150, outdoor control unit 40 compares the temperature difference that calculates and the upper limit that presets the temperature difference.
If result relatively is for calculating the temperature difference greater than the upper limit that presets the temperature difference, at step S151,40 of outdoor control unit are judged the open degree of dynamo-electric expansion valve in the not enough and corresponding definite not operating room of refrigerant, promptly increase a predetermined open degree value on the basis of the former open degree of electric expansion valve.
If result relatively is equal to or less than the upper limit that presets the temperature difference for calculating the temperature difference, at step S160, outdoor control unit 40 will be calculated the temperature difference and compare with the lower limit that presets the temperature difference.
If step S160 result relatively is for calculating the temperature difference less than the lower limit that presets the temperature difference, at step S161, outdoor control unit 40 is determined the open degree of corresponding electric expansion valve, promptly on the basis of former open degree, deduct a predetermined open degree value, reflux away thereby make in the electric expansion valve of a small amount of refrigerant by the indoor set of not working.Accordingly, if step S160 result relatively is equal to or greater than the lower limit that presets the temperature difference for calculating the temperature difference, because the temperature difference is within normal range (NR), outdoor control unit 40 determines that at step S170 the open degree of electric expansion valve is constant for keeping former open degree.
After having determined open degree, at step S180, outdoor control unit 40 controls not that dynamo-electric expansion valve keeps determined open degree in the operating room.
Below consult Fig. 3 B, description of step S110 judges that the number of the indoor set of not working is two or more situations.
Shown in Fig. 3 B, if the number of the definite indoor set of not working of step S110 is two or more, outdoor control unit 40 detects the outside air temperature of off-premises stations by outside air temperature sensor 17 at step S200.
At step S210, outdoor control unit 40 is by the temperature of outdoor heat converter inlet temperature sensor 15 sensing chamber's outer heat-exchangers 12 entrance sides.
After this at step S220, the temperature difference that outdoor control unit 40 is calculated between detected outside air temperatures and the outdoor heat converter 12 entrance side temperature.
After calculating the temperature difference, at step S230, outdoor control unit 40 compares the temperature difference that calculates and the upper limit that presets the temperature difference.
If result relatively is for calculating the temperature difference greater than the upper limit that presets the temperature difference, at step S231,40 of outdoor control unit are judged the open degree of dynamo-electric expansion valve in the not enough and corresponding definite not operating room of refrigerant, promptly increase a predetermined open degree value on the basis of the former open degree of electric expansion valve.
If result relatively is equal to or less than the upper limit that presets the temperature difference for calculating the temperature difference, at step S240, outdoor control unit 40 will be calculated the temperature difference and compare with the lower limit that presets the temperature difference.
If step S240 result relatively is for calculating the temperature difference less than the lower limit that presets the temperature difference, at step S241, outdoor control unit 40 is determined the open degree of corresponding electric expansion valve, promptly on the basis of former open degree, deduct a predetermined open degree value, reflux away thereby make in the electric expansion valve of a small amount of refrigerant by the indoor set of not working.Accordingly, if step S240 result relatively is equal to or greater than the lower limit that presets the temperature difference for calculating the temperature difference, because the temperature difference is within normal range (NR), outdoor control unit 40 determines that at step S250 the open degree of electric expansion valve is constant for keeping former open degree.
After the open degree of dynamo-electric expansion valve, in step 260, outdoor control unit 40 detects the indoor air temperature in the room, indoor set place of not working by the room air temperature sensor 16,26 and 36 in room, respective chambers machine place in having determined operating room not.
Whether at step S270, the indoor air temperature in each room, indoor set place that outdoor control unit 40 will detect compares, see between them different.
If step S270 result relatively is the indoor air temperature difference in each room, indoor set place, in step 280, outdoor control unit 40 is with the variable quantity of dynamo-electric expansion valve open degree in corresponding definite not operating room.In this case, by the control of outdoor control unit 40, determined open degree variable quantity should make the average open degree of electric expansion valve remain unchanged.For example, if first and second indoor air temperatures of not working room, indoor set place are respectively 20 and 10 and take the photograph the formula degree, outdoor control unit 40 will make the electric expansion valve of indoor air temperature second indoor set lower than the first indoor set air themperature increase open degree, make its open degree than the big certain quantity of definite open degree, thus prevent outdoor air low temperature the refrigerant that may cause be detained.On the other hand, outdoor control unit 40 will make the some expansion valve of the first higher indoor set of indoor air temperature reduce open degree, make its open degree than the little some of definite open degree, thereby improve the efficient of refrigerant cycle.
Afterwards at step S290, outdoor control unit 40 is controlled the open degree of dynamo-electric expansion valve in the operating room not according to the open degree of determining and open degree variable quantity.
If indoor air temperature that detects and coming to the same thing that step S270 determines, the open degree of outdoor control unit 40 dynamo-electric expansion valve step S300 controls operating room not by definite open degree in.
As mentioned above, the invention provides a kind of multisystem air conditioner device and control method thereof, but in its open degree of dynamo-electric expansion valve in the operating room not of air-conditioner heating optimal control in service, can better solve the viscosity influence and the compressor Efficacy Problem that cause because of indoor set and the off-premises station temperature difference, thereby can prevent the delay of refrigerant and improve the efficient of refrigerant cycle.
Though disclose most preferred embodiment of the present invention for purposes of illustration, the people that are familiar with this gate technique can understand, and under the scope and main idea of the claim that does not exceed the present invention and declared, the present invention are made to increase, reduce and revise be possible.
Claims (12)
1, a kind of multisystem air conditioner device comprises: the off-premises station with outdoor heat converter; A plurality of indoor sets that link to each other with off-premises station; And be used for the respective chambers machine and be back to the valving of off-premises station at the heating refrigerant that makes in service by indoor set, comprising:
First temperature detecting unit that is used to detect outside air temperature;
Second temperature detecting unit that is used for sensing chamber's outer heat-exchanger temperature; And
Temperature difference that detects according to described first and second temperature detecting units, the valve control unit that is used to control the corresponding indoor set valve opening degree of not working.
2, air-conditioner according to claim 1, it is characterized in that the temperature difference between the outdoor heat converter temperature that the outside air temperature that wherein said valve control unit is detected according to described first temperature detecting unit and second temperature detecting unit detected determines the valve opening degree of respective chambers machine, and the open degree of valve is controlled by the open degree of determining.
3, as air-conditioner as described in the claim 2, it is characterized in that if the described temperature difference greater than predetermined reference value, described valve control unit will increase the open degree of described valve and make its normal open degree greater than valve, if the described temperature difference is less than predetermined reference value, described valve control unit will reduce the open degree of described valve and make its normal open degree less than valve.
4,, it is characterized in that further comprising that is used to detect the 3rd temperature detecting unit of indoor temperature in room, indoor set place of not working as air-conditioner as described in the claim 2;
When having two or more indoor sets to be in off position, wherein said valve control unit detects the indoor air temperature in room, indoor set place by described the 3rd temperature detecting unit, if the indoor air temperature in each room, indoor set place that is detected differs from one another, described valve control unit is determined weighted value and is increased or reduce determined open degree according to determined weighted value for the open degree of determining.
5, as air-conditioner as described in the claim 4, it is characterized in that wherein said valve control unit increases the valve opening degree of indoor set that indoor air temperature is lower than the indoor air temperature in other room, indoor set place, make its open degree greater than determined open degree, reduce the valve opening degree of indoor set that indoor air temperature is higher than the indoor air temperature in other room, indoor set place simultaneously, make its open degree less than determined open degree.
6, as air-conditioner as described in the claim 5, it is characterized in that the determined weighted value of wherein said valve control unit remains unchanged the total open degree of indoor set valving of not working.
7, air-conditioner according to claim 1, it is characterized in that wherein said second temperature detecting unit detects the temperature of described outdoor heat converter porch coolant channel, refrigerant flows into off-premises station by it by indoor set when air-conditioner heating operation, perhaps detect the temperature of the coolant channel between outdoor heat converter inlet and outdoor heat converter geometric center position.
8, a kind of control method of multisystem air conditioner device, described air-conditioner comprises: an off-premises station that comprises outdoor heat converter; A plurality of indoor sets that link to each other with off-premises station; And be used for the respective chambers machine and be back to the valving of off-premises station at the heating refrigerant that makes in service by indoor set, described method comprises:
Detect outside air temperature;
Sensing chamber's outer heat-exchanger temperature;
Open degree according to the definite indoor set valve of not working of the temperature difference between outdoor air actuator temperature that is detected and the outdoor heat converter temperature; And
Control the valve opening degree of the indoor set of not working according to determined open degree.
9, as control method as described in the claim 8, it is characterized in that wherein said definite open degree step comprises:
During greater than the normal temperature difference, the open degree that increases valve makes its normal open degree greater than valve in the described temperature difference; And
During less than the normal temperature difference, the open degree that reduces valve makes its normal open degree less than valve in the described temperature difference.
10, as control method as described in the claim 8, it is characterized in that further comprising:
The number of definite indoor set of not working is two or more;
If there are two or more indoor sets to be in off position, detect the indoor air temperature in this room, two or more indoor sets place;
Determine whether the indoor air temperature that is detected differs from one another;
If the indoor air temperature that is detected differs from one another, for the open degree of determining is determined weighted value; And
Open degree according to determined open degree and weighted value by-pass valve control.
11, as control method as described in the claim 10, it is characterized in that wherein said definite weighted value further may further comprise the steps:
Increase the valve opening degree of indoor set that indoor air temperature is lower than the indoor air temperature in other room, indoor set place of not working, make its valve opening degree greater than determined open degree; And
Reduce the valve opening degree of indoor set that indoor air temperature is higher than the indoor air temperature in other room, indoor set place of not working, make its valve opening degree less than determined open degree.
12,, it is characterized in that the do not work total open degree of valve of indoor set of determining to make of wherein said weighted value remains unchanged as control method as described in the claim 11.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20020046369A KR100444971B1 (en) | 2002-08-06 | 2002-08-06 | Multi-chamber type air conditioner and method for controlling electric expansion valve thereof |
| KR200246369 | 2002-08-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1474105A CN1474105A (en) | 2004-02-11 |
| CN1220006C true CN1220006C (en) | 2005-09-21 |
Family
ID=34191999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021481180A Expired - Fee Related CN1220006C (en) | 2002-08-06 | 2002-10-31 | Multiple system air conditioner and its control method |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100444971B1 (en) |
| CN (1) | CN1220006C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465538C (en) * | 2004-04-30 | 2009-03-04 | 乐金电子(天津)电器有限公司 | Valve support base for air-conditioner with one outdoor set and multiple indoor sets |
| KR100600586B1 (en) * | 2004-12-24 | 2006-07-13 | 삼성전자주식회사 | Method for control electronic expansion valve of multi air conditioner system |
| KR100952985B1 (en) * | 2007-12-04 | 2010-04-15 | 주식회사 경동네트웍 | Method for controlling heating system |
| CN102645004B (en) * | 2012-04-23 | 2015-07-15 | 宁波奥克斯空调有限公司 | Mute air conditioner and control method for same |
| KR101191758B1 (en) | 2012-05-17 | 2012-10-16 | (주)동양테크놀로지 | High efficency heat pump air conditioning unit controlled by remote controller of smart phone application |
| CN104864517A (en) * | 2014-02-24 | 2015-08-26 | 大金工业株式会社 | Air conditioning device |
| CN105910238B (en) * | 2016-05-13 | 2019-03-08 | 广东美的暖通设备有限公司 | Multi-online air-conditioning system and its communication means and communication device |
| CN109612021B (en) * | 2018-11-28 | 2021-04-20 | 宁波奥克斯电气股份有限公司 | Multi-connected air conditioning system abnormal sound control method and multi-connected air conditioning system |
| CN109757910B (en) * | 2019-01-09 | 2022-06-24 | 重庆海尔空调器有限公司 | Energy system, method and apparatus for controlling energy system, and storage medium |
| CN110173847A (en) * | 2019-06-04 | 2019-08-27 | 珠海格力电器股份有限公司 | Control method and device for recycling refrigerant, storage medium and air conditioner |
| CN110500702A (en) * | 2019-08-26 | 2019-11-26 | 海信（山东）空调有限公司 | Air conditioner, indoor unit electric expansion valve control method and device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03241260A (en) * | 1990-02-16 | 1991-10-28 | Matsushita Refrig Co Ltd | Multi-room air-conditioner |
| JP2689025B2 (en) * | 1990-12-05 | 1997-12-10 | 松下冷機株式会社 | Multi-room air conditioner |
| JP2000186864A (en) * | 1998-12-21 | 2000-07-04 | Sanyo Electric Co Ltd | Control method for motor-operated expansion valve |
| KR20010001013A (en) * | 1999-06-01 | 2001-01-05 | 구자홍 | Defrosting method for air conditioner |
-
2002
- 2002-08-06 KR KR20020046369A patent/KR100444971B1/en not_active IP Right Cessation
- 2002-10-31 CN CNB021481180A patent/CN1220006C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040013442A (en) | 2004-02-14 |
| CN1474105A (en) | 2004-02-11 |
| KR100444971B1 (en) | 2004-08-18 |
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