CN102022807B - Air conditioner and method for controlling the same - Google Patents
Air conditioner and method for controlling the same Download PDFInfo
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- CN102022807B CN102022807B CN 201010151095 CN201010151095A CN102022807B CN 102022807 B CN102022807 B CN 102022807B CN 201010151095 CN201010151095 CN 201010151095 CN 201010151095 A CN201010151095 A CN 201010151095A CN 102022807 B CN102022807 B CN 102022807B
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/008—Refrigerant heaters
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0314—Temperature sensors near the indoor heat exchanger
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0315—Temperature sensors near the outdoor heat exchanger
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/11—Sensor to detect if defrost is necessary
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
Abstract
An air conditioner is provided. A compressor compresses refrigerant. An indoor heat exchanger performs heat exchange between the refrigerant and indoor air. An expansion device decompresses the refrigerant. An outdoor heat exchanger performs heat exchange between the refrigerant and outdoor air. Sensors sense temperature of the outdoor heat exchanger, indoor temperature and outdoor temperature. Aheater generates heat variably according to the outdoor temperature and the outdoor heat exchanger temperature. A controller determines quantity of frost on the outdoor heat exchanger by comparing a preset reference temperature with a temperature difference between the outdoor heat exchanger and the outdoor heat exchanger temperature, and controls output of the heater according to the determined frost quantity. Accordingly, frost quantity is determined according to the indoor and outdoor temperatures and the outdoor heat exchanger temperature, and heat quantity of the induction heater is accordingly varied. Therefore, power consumption can be reduced.
Description
Technical field
The present invention relates to air conditioner and control method thereof.
Background technology
Usually, air conditioner is to make room air remain on the household electrical appliances of optimum state according to purposes, purpose.For example, be adjusted to nice and cool refrigerating state in summer with indoor, then be adjusted to the warm state that heats with indoor in winter, and regulate indoor humidity, make room air keep comfortable state.
Along with the expansion gradually of life convenience goods such as aforesaid air conditioner use amount, the consumer is more and more higher to the demand with energy-efficient, high-performance and product easy to use.
Above-mentioned air conditioner can be divided into: the divergence type air conditioner that is separated into indoor set and off-premises station respectively; Indoor set and off-premises station are combined into the integrated air conditioner of a device.And, can be divided into according to the installation form of air conditioner: be installed on wall air conditioner and frame air conditioner on the wall; Can found the floor air conditioner of being located at the room.
Herein, above-mentioned divergence type air conditioner is made of indoor set and off-premises station, described indoor set is arranged on indoor, and be used for supplying with hot blast or cold wind to the interior volume that needs tempered air, described off-premises station to cold-producing medium compress, expansion etc., to allow in above-mentioned indoor set, finishing sufficient heat exchange.
On the other hand, in the past, but in the process that the air conditioner of cooling and warming moves in the mode of heating, when on above-mentioned outdoor heat exchanger surface if the phenomenon of frosting taking place because of the temperature sensor that is arranged at outdoor heat exchanger, usually adopt frequency-changeable compressor is induced to after low frequency switches cross valve, start freeze cycle and the method that defrosts temporarily.
Yet when this method of employing, indoor heat exchanger plays the effect of evaporimeter, owing to must defrost under refrigerating state, therefore has the problem that causes indoor temperature to descend.
In addition, when the action of air conditioner switched to the refrigerating operaton pattern, the cold-producing medium of high temperature is supplied to outdoor heat exchanger needed the regular hour, therefore had long problem of required time of defrosting.
Summary of the invention
The objective of the invention is to, a kind of structure and control by improving air conditioner is provided, air conditioner and the control method thereof that can heat effectively and defrost.
In addition, another object of the present invention is to, provide a kind of by detecting the frosting degree of heat exchanger, make air conditioner and the control method thereof of the heat change of induction heater.
The air conditioner according to embodiment of the present invention for addressing the above problem comprises: the compressor that is used for compressed refrigerant; The indoor heat exchanger that makes cold-producing medium and room air through above-mentioned compressor carry out heat exchange; Make the expansion gear through the cold-producing medium decompression of above-mentioned indoor heat exchanger; The outdoor heat exchanger that makes the cold-producing medium of being discharged by above-mentioned expansion gear and extraneous gas carry out heat exchange; Detect the temperature of above-mentioned outdoor heat exchanger and a plurality of sensors of indoor and outdoor temperature; According to the heater by the temperature change caloric value of the detected extraneous gas temperature of the sensor and outdoor heat exchanger; And the frosting degree that temperature gap and the predefined reference temperature value of said external gas temperature and outdoor heat exchanger compared to judge above-mentioned outdoor heat exchanger, and control the control part of the output of above-mentioned heater according to this frosting degree.
Another air conditioner according to embodiment of the present invention for addressing the above problem comprises: the compressor that is used for compressed refrigerant; The indoor heat exchanger that makes cold-producing medium and room air through above-mentioned compressor carry out heat exchange; Make the expansion gear through the cold-producing medium decompression of above-mentioned indoor heat exchanger; The outdoor heat exchanger that makes the cold-producing medium of being discharged by above-mentioned expansion gear and extraneous gas carry out heat exchange; Bypass flow path makes cold-producing medium shunt to the entrance side of above-mentioned outdoor heat exchanger from the outlet side of above-mentioned compressor, thereby finishes the defrosting to above-mentioned outdoor heat exchanger in the process that heats; Detect the temperature of above-mentioned outdoor heat exchanger and a plurality of sensors of indoor and outdoor temperature; Improve the induction heater of the evaporating temperature of cold-producing medium according to the temperature change caloric value by the detected outdoor temperature of the sensor and outdoor heat exchanger; And the frosting degree that temperature gap and the predefined reference temperature value of above-mentioned outdoor temperature and outdoor heat exchanger compared to judge above-mentioned outdoor heat exchanger, and control the control part of the output of above-mentioned induction heater according to this frosting degree; The output of above-mentioned induction heater can be adjusted to first output valve, less than second output valve of above-mentioned first output valve and less than the 3rd output valve of above-mentioned second output valve; When above-mentioned outdoor temperature is predefined the 3rd design temperature when following, control above-mentioned induction heater, so that its output valve is at least more than above-mentioned second output valve; The said reference temperature value comprises first fiducial temperature (H1), second fiducial temperature (H2), the 3rd fiducial temperature (H3), the 4th fiducial temperature (H4), wherein, above-mentioned first fiducial temperature (H1) is higher than above-mentioned second fiducial temperature (H2), and above-mentioned the 3rd fiducial temperature (H3) is higher than above-mentioned the 4th fiducial temperature (H4); When above-mentioned outdoor temperature is higher than than high second design temperature of above-mentioned the 3rd design temperature, if the said temperature difference is greater than above-mentioned first fiducial temperature (H1), then the output valve of above-mentioned induction heater is above-mentioned first output valve, if the said temperature difference is greater than above-mentioned second fiducial temperature (H2) and below above-mentioned first fiducial temperature (H1), then the output valve of above-mentioned induction heater is above-mentioned second output valve, if the said temperature difference is below above-mentioned second fiducial temperature (H2), then the output valve of above-mentioned induction heater is above-mentioned the 3rd output valve; When above-mentioned outdoor temperature is higher than above-mentioned the 3rd design temperature and when above-mentioned second design temperature is following, if the said temperature difference is greater than above-mentioned the 3rd fiducial temperature (H3), then the output valve of above-mentioned induction heater is above-mentioned first output valve, if the said temperature difference is greater than above-mentioned the 4th fiducial temperature (H4) and below above-mentioned the 3rd fiducial temperature (H3), then the output valve of above-mentioned induction heater is above-mentioned second output valve, if the said temperature difference is below above-mentioned the 4th fiducial temperature (H4), then the output valve of above-mentioned induction heater is above-mentioned the 3rd output valve.
Feature of the present invention is that also above-mentioned a plurality of sensors comprise the indoor temperature transmitter for detection of indoor temperature, the caloric value of whether regulating above-mentioned heater than the predefined first design temperature height according to above-mentioned indoor temperature.
Feature of the present invention is that also above-mentioned a plurality of sensors comprise the outdoor temperature sensor for detection of outdoor temperature, whether is higher than the caloric value that predefined second design temperature is regulated above-mentioned heater according to above-mentioned outdoor temperature.
Feature of the present invention is that also the temperature gap of the output of above-mentioned heater and said external gas temperature and outdoor heat exchange actuator temperature increases pro rata.
Feature of the present invention also is, the gas-liquid separator that also comprises the entrance side that is arranged on above-mentioned compressor and liquid refrigerant is separated, and above-mentioned heater is arranged on the induction heater (induction heater) on this gas-liquid separator.
Feature of the present invention is that also above-mentioned air conditioner also comprises: the bypass flow path that cold-producing medium is shunted to the entrance side of above-mentioned outdoor heat exchanger from the outlet side of above-mentioned compressor; And be arranged on above-mentioned bypass flow path also for first valve that flows of controlling cold-producing medium.
In addition, in the control method of air conditioner of the present invention, this air conditioner drives the freeze cycle that is made of compressor, indoor heat exchanger, expansion gear and outdoor heat exchanger, and the control method of this air conditioner comprises: the step that indoor temperature and predefined first design temperature are compared; According to the comparative result of above-mentioned indoor temperature and first design temperature, the step that outdoor temperature and predefined second design temperature are compared; Determine the step of the temperature gap of above-mentioned outdoor temperature and outdoor heat exchanger; The step that said temperature difference and predefined reference temperature value are compared; And according to the comparative result of said temperature difference and said reference temperature value, regulate the step of the caloric value that is used for heater that above-mentioned outdoor heat exchanger is defrosted.
The present invention also provides a kind of control method of air conditioner, this air conditioner drives the freeze cycle that is made of compressor, indoor heat exchanger, expansion gear and outdoor heat exchanger, the control method of this air conditioner comprises: comparison step for the first time compares indoor temperature and predefined first design temperature; Comparison step according to the comparative result of above-mentioned indoor temperature and first design temperature, compares outdoor temperature and predefined second design temperature, the 3rd design temperature for the second time, and wherein, above-mentioned second design temperature is higher than above-mentioned the 3rd design temperature; Determine the step of the temperature gap of above-mentioned outdoor temperature and outdoor heat exchanger; The step that said temperature difference and predefined reference temperature value are compared; And according to the comparative result of said temperature difference and said reference temperature value, regulate the step of the caloric value of the induction heater that above-mentioned outdoor heat exchanger is defrosted; The output of above-mentioned induction heater can be adjusted to first output valve, less than second output valve of above-mentioned first output valve and less than the 3rd output valve of above-mentioned second output valve; When above-mentioned outdoor temperature is above-mentioned the 3rd design temperature when following, control above-mentioned induction heater, so that its output valve is at least more than above-mentioned second output valve; The said reference temperature value comprises first fiducial temperature (H1), second fiducial temperature (H2), the 3rd fiducial temperature (H3), the 4th fiducial temperature (H4), wherein, above-mentioned first fiducial temperature (H1) is higher than above-mentioned second fiducial temperature (H2), and above-mentioned the 3rd fiducial temperature (H3) is higher than above-mentioned the 4th fiducial temperature (H4); When above-mentioned outdoor temperature is higher than above-mentioned second design temperature, if the said temperature difference is greater than above-mentioned first fiducial temperature (H1), then the output valve of above-mentioned induction heater is above-mentioned first output valve, if the said temperature difference is greater than above-mentioned second fiducial temperature (H2) and below above-mentioned first fiducial temperature (H1), then the output valve of above-mentioned induction heater is above-mentioned second output valve, if the said temperature difference is below above-mentioned second fiducial temperature (H2), then the output valve of above-mentioned induction heater is above-mentioned the 3rd output valve; When above-mentioned outdoor temperature is higher than above-mentioned the 3rd design temperature and when above-mentioned second design temperature is following, if the said temperature difference is greater than above-mentioned the 3rd fiducial temperature (H3), then the output valve of above-mentioned induction heater is above-mentioned first output valve, if the said temperature difference is greater than above-mentioned the 4th fiducial temperature (H4) and below above-mentioned the 3rd fiducial temperature (H3), then the output valve of above-mentioned induction heater is above-mentioned second output valve, if the said temperature difference is below above-mentioned the 4th fiducial temperature (H4), then the output valve of above-mentioned induction heater is above-mentioned the 3rd output valve.
Whether feature of the present invention also is, be more than above-mentioned first design temperature according to above-mentioned indoor temperature, and the said reference temperature value is redefined for different value mutually.
Whether feature of the present invention also is, be more than above-mentioned second design temperature according to above-mentioned outdoor temperature, and the said reference temperature value is redefined for different value mutually.
Feature of the present invention also is, when said temperature difference during greater than the said reference temperature value, the caloric value of above-mentioned heater increases.
Feature of the present invention also is, the output of above-mentioned heater can be adjusted to first output valve, less than second output valve of above-mentioned first output valve with less than the 3rd output valve of above-mentioned second output valve, when above-mentioned outdoor temperature is that predefined temperature value is when following, control above-mentioned heater, so that its output valve is at least more than second output valve.
Feature of the present invention also is, when above-mentioned indoor temperature is lower than above-mentioned first design temperature, controls above-mentioned heater, so that its output valve is at least more than above-mentioned second output valve.
The said reference temperature value comprises first fiducial temperature and less than second fiducial temperature of above-mentioned first fiducial temperature, when above-mentioned outdoor temperature is higher than above-mentioned second design temperature, if the said temperature difference is greater than above-mentioned first fiducial temperature, then the output valve of above-mentioned heater is above-mentioned first output valve; If the said temperature difference is greater than above-mentioned second fiducial temperature and below above-mentioned first fiducial temperature, then the output valve of above-mentioned heater is above-mentioned second output valve; If the said temperature difference is below above-mentioned second fiducial temperature, then the output valve of above-mentioned heater is above-mentioned the 3rd output valve.
Feature of the present invention also is, in the process that the interior space is heated driving above-mentioned freeze cycle, by the entrance side shunting of cold-producing medium from the outlet side of above-mentioned compressor to above-mentioned outdoor heat exchanger, thereby finish defrosting to above-mentioned outdoor heat exchanger simultaneously.
In the control method of another air conditioner of the present invention, this air conditioner drives the freeze cycle that is made of compressor, condenser, expansion gear and evaporimeter, and having the heater that defrosts for to above-mentioned evaporimeter, the control method of this air conditioner comprises: the step that indoor temperature and outdoor temperature are compared with predefined design temperature respectively; The step of the pipe arrangement temperature of sensing chamber's external heat exchanger; Calculate the step of the temperature gap of above-mentioned outdoor temperature and outdoor heat exchanger; Determined the step of the frosting degree of above-mentioned evaporimeter by the said temperature difference; And regulate the step of above-mentioned heater caloric value pro rata with above-mentioned frosting degree.
The step of the frosting degree of above-mentioned decision evaporimeter comprises the step that the size with said temperature difference and predefined reference temperature value compares.
Feature of the present invention is that also the said temperature difference is more big, and it is more big then to be judged as above-mentioned frosting degree, correspondingly increases the caloric value of above-mentioned heater therewith.
According to the embodiments of the present invention with above-mentioned formation, have the continuous heating and defrosting operation that heats and defrost and finish simultaneously by making, improve the indoor heating performance, the advantage that can defrost to outdoor heat exchanger.
In addition, can judge the frosting degree of outdoor heat exchanger according to the temperature of indoor and outdoor temperature and outdoor heat exchanger, and can use according to the heat that the frosting degree of judging changes induction heater therefore have the advantage that can reduce unnecessary power consumption.
In addition, fluid reservoir is provided with induction heater, can reduce the amount of heat transfer to outside gas loss, has can reduce from above-mentioned induction heater to cold-producing medium to transmit the heat advantage of required time.
And, in the process of heating, provide heat by induction heater to the low-pressure side that heats circulation, thereby even have the advantage that the output that no longer increases compressor also can improve heating performance.
In addition, the defrost process in the frosting that produces for the removal evaporimeter starts induction heater, can transmit more heat to the low-pressure side cold-producing medium thereby have, and correspondingly can improve the advantage of the defrost performance of air conditioner therewith.
Description of drawings
Fig. 1 heats the figure of the formation of circulation according to the air conditioner of the embodiment of the invention for expression.
Fig. 2 is the block diagram of expression according to the air conditioner formation of the embodiment of the invention.
The flow chart of the method that Fig. 3 and Fig. 4 control at first interval of indoor temperature according to the air conditioner of the embodiment of the invention for expression.
The flow chart of the method that Fig. 5 controls at second interval of indoor temperature for the above-mentioned air conditioner of expression.
The specific embodiment
Fig. 1 heats the figure of the formation of circulation according to the air conditioner of the embodiment of the invention for expression.
According to Fig. 1, comprise according to the air conditioner 1 of the embodiment of the invention: the compressor 10 that is used for compressed refrigerant; Inflow is by the cold-producing medium of above-mentioned compressor 10 boil down to HTHPs, so that the indoor heat exchanger 21 that carries out heat exchange with room air; To deliver to indoor indoor machine fan 22 through the hot-air of heat exchange; The expansion gear that makes cold-producing medium through heat exchange be expanded to low pressure is capillary 30; The outdoor heat exchanger 41 that makes cold-producing medium after the expansion and extraneous gas carry out heat exchange; And the outdoor machine fan 42 of the cold air after the heat exchange being delivered to the outside.
Specifically, heat circulation time when carrying out by air conditioner, use condenser in the above-mentioned indoor heat exchanger 21, this condenser is used for making by above-mentioned compressor 10 refrigerant compressed being condensed into low temperature, and adopt evaporimeter, this evaporimeter to be used for making the liquid refrigerant evaporates that reduces pressure by above-mentioned capillary 30 in the above-mentioned outdoor heat exchanger 41.
Herein, the cold-producing medium that circulates in heating circulation formed high pressure before by above-mentioned capillary 30, by then forming low pressure behind the above-mentioned capillary 30.Below, will be called " high-pressure side cold-producing medium " by the cold-producing medium before the above-mentioned capillary 30, will be called " low-pressure side cold-producing medium " by the cold-producing medium after the above-mentioned capillary 30.
Side at above-mentioned indoor heat exchanger 21 is provided with indoor heat exchanger heater 23.Above-mentioned indoor heat exchanger heater 23 can generate heat for the heating capacity because of above-mentioned indoor heat exchanger 21 shortcomings in the formation of auxiliary freeze cycle when externally gas temperature is low.
In addition, in the process of carrying out continuous heating and defrosting, above-mentioned indoor heat exchanger heater 23 can make the temperature of the tempered air (conditioned air) that is expelled to the interior space remain on more than the uniform temperature.
Herein, " heating and defrosting continuously " refers to finish simultaneously the operational mode to the defrosting of outdoor heat exchanger in the process of carrying out heating operation.The Defrost operation of above-mentioned outdoor heat exchanger 41 can be diverted to the entrance side of above-mentioned outdoor heat exchanger 41 by the cold-producing medium through the HTHP of above-mentioned compressor 10 and finish.
Discharge side at above-mentioned outdoor heat exchanger 41 is provided with gas-liquid separator 50, and 50 pairs of this gas-liquid separators separate by the liquid refrigerant in the cold-producing medium of above-mentioned outdoor heat exchanger 41 evaporations, thereby gas refrigerant is flow in the above-mentioned compressor 10.
In addition, above-mentioned air conditioner 1 is provided with bypass flow path 81, and this bypass flow path 81 is used for making the cold-producing medium hot gas (hot gas) through above-mentioned compressor 10 branch to the entrance side of above-mentioned outdoor heat exchanger 41 or the entrance side of above-mentioned gas-liquid separator 50 at least.That is, above-mentioned bypass flow path 81 prolongs to the entrance side of above-mentioned outdoor heat exchanger 41 and the entrance side of above-mentioned compressor 10 from the outlet side of above-mentioned compressor 10.
Above-mentioned bypass flow path 81 is provided with for first valve 80 of regulating the refrigerant flow of being shunted.Above-mentioned first valve 80 can comprise magnetic valve.
Cold-producing medium through above-mentioned compressor 10 is diverted to the entrance side of above-mentioned compressor 10, thereby can improve evaporating temperature and the pressure of the cold-producing medium of above-mentioned compressor 10 entrance sides, thereby has the advantage of the input load that can reduce above-mentioned compressor 10.And what produce between the capacity of elimination above-mentioned compressor 10 and the capacity of above-mentioned indoor heat exchanger 21 is unbalanced, thereby has the effect that improves heating efficiency.
And the high-temperature high-pressure refrigerant of process above-mentioned compressor 10 is diverted to the entrance side of above-mentioned outdoor heat exchanger 41, can finish the defrosting to above-mentioned outdoor heat exchanger 41 thus.
That is, shunt by 80 pairs of cold-producing mediums of above-mentioned first valve, can carry out above-mentioned continuous heating and defrosting operation thus.
Above-mentioned first bypass flow path 81 is provided be used to second valve 90 that prevents that the entrance side of cold-producing medium from the entrance side of above-mentioned outdoor heat exchanger 41 to above-mentioned gas-liquid separator 50 from flowing.By this second valve 90, can prevent that in common heating mode cold-producing medium is by the phenomenon of above-mentioned bypass flow path 81 from the entrance side of above-mentioned outdoor heat exchanger 41 to the entrance side adverse current of above-mentioned gas-liquid separator 50.Above-mentioned second valve 90 can comprise check-valves.
Discharge side in above-mentioned compressor 10 is provided with cross valve 70, the flow direction that this cross valve 70 can switch cold-producing medium according to refrigeration or the heating mode of air conditioner.
In heating mode, it is compressed that the cold-producing medium by above-mentioned outdoor heat exchanger 41 flow into above-mentioned compressor 10 backs through above-mentioned cross valve 70, and compressed cold-producing medium flow into above-mentioned indoor heat exchanger 21 through above-mentioned cross valve 70.On the contrary, in refrigeration mode, it is compressed that the cold-producing medium by above-mentioned indoor heat exchanger 41 flow into above-mentioned compressor 10 backs through above-mentioned cross valve 70, and compressed cold-producing medium flow into above-mentioned outdoor heat exchanger 41 through above-mentioned cross valve 70.
On the other hand, the induction heater 60 that has the cold-producing medium to above-mentioned gas-liquid separator 50 to heat in the arranged outside of above-mentioned gas-liquid separator 50.This induction heater 60 can be configured in the mode of surrounding above-mentioned gas-liquid separator 50 outer peripheral faces.
Herein, above-mentioned induction heater 60 is the faradic heaters that produce by magnetic field as the thermal source utilization, and is made of the electromagnet that high-frequency alternating current is passed through.And above-mentioned electromagnet comprises the coil that alternating current is flowed.
Above-mentioned induction heater 60 namely provides heat to the cold-producing medium of above-mentioned outdoor heat exchanger 41 sides to the low-pressure side cold-producing medium in above-mentioned continuous heating and defrosting pattern, thereby improves the evaporating temperature of cold-producing medium, helps to remove the frost of tying.
And, because the entrance side cold-producing medium of 60 pairs of above-mentioned compressor 10 of above-mentioned induction heater heats, therefore, also namely provide heat to the cold-producing medium of above-mentioned indoor heat exchanger 21 sides to the high-pressure side cold-producing medium, thereby can improve condensation temperature.As mentioned above, by evaporating temperature and the condensation temperature of above-mentioned induction heater 60 raising cold-producing mediums, heating efficiency can be improved thus, also defrosting efficiency can be improved.
Moreover, above-mentioned induction heater 60 provides heat to above-mentioned indoor heat exchanger 21 sides in common heating mode, improve the pipe arrangement temperature of above-mentioned indoor heat exchanger 21, thereby has the effect that can improve the air themperature that is expelled to the interior space as early as possible.
On the other hand, above-mentioned induction heater 60 can adopt the frequency conversion mode that the heat that is provided by above-mentioned heater 60 can be provided.At this moment, have and to change the advantage of the heat that provides according to extraneous gas temperature and the required heat exchange temperature of defrosting.Change the control method of the caloric value of above-mentioned induction heater 60 about the frosting degree according to above-mentioned outdoor heat exchanger 41, then narrate with reference to accompanying drawing in the back.
Fig. 2 is that expression is according to the block diagram of the air conditioner formation of the embodiment of the invention.
According to Fig. 2, comprise according to the air conditioner 1 of the embodiment of the invention: for detection of the outdoor temperature sensor 110 of extraneous gas temperature; Indoor temperature transmitter 120 for detection of interior space temperature; And for detection of the outdoor heat exchanger sensor 130 of the refrigerant piping temperature of above-mentioned outdoor heat exchanger 41.
And above-mentioned air conditioner 1 comprises: the induction heater 60 that changes caloric value according to sensor 110,120,130 etc. detected value; With the control part 100 that the sensor 110,120,130 is controlled.
For convenience of explanation, above-mentioned outdoor temperature sensor 110, indoor temperature transmitter 120 and outdoor heat exchanger sensor 130 are called " first temperature sensor ", " second temperature sensor " and " three-temperature sensor " respectively.
Specifically, detected value by the sensor 110,120, detections such as 130 is transferred into above-mentioned control part 100, above-mentioned control part 100 is resolved by the sensor 110,120,130 etc. and is transmitted the information of coming, and controls the heat of above-mentioned induction heater 60 with predefined size output.
For convenience of explanation, below the value with " outdoor temperature-outdoor piping temperature " is called " GAP ", and the calorie value that preestablishes by above-mentioned induction heater 60 outputs can be divided into P1, P2 or P3.Wherein, according to the control mode of above-mentioned induction heater 60, can provide exportable amount of heat with more kinds of forms.
Fig. 3 and Fig. 4 are the flow charts of the method controlled at first interval of indoor temperature according to the air conditioner of the embodiment of the invention, the flow chart of Fig. 5 method that to be above-mentioned air conditioner control at second interval of indoor temperature.
According to Fig. 3～Fig. 5, the control method according to the air conditioner of the embodiment of the invention is described.Fig. 3～flow chart shown in Figure 5 is the control method when carrying out the operation of continuous heating and defrosting.
Fig. 3 and Fig. 4 represent that indoor temperature is that T1 is when above, according to the method for outdoor temperature and outdoor piping temperature control induction heater, when Fig. 5 represents that indoor temperature is lower than T1, according to the method for outdoor temperature and outdoor piping temperature control induction heater.
Herein, temperature T 1 is predefined temperature, can be set to about 15 ℃.Certainly, according to the control method of air conditioner, above-mentioned T1 also can be set to other values.
At first, by above-mentioned indoor temperature transmitter 120, detect indoor temperature (S11).When above-mentioned indoor temperature when T1 is above, detect outdoor temperature by above-mentioned outdoor temperature sensor 110, and judge whether above-mentioned outdoor temperature is higher than T2(S12, S13, S14).
At this, above-mentioned T2 is predefined temperature, can be set to about 0 ℃.Certainly, according to the control method of air conditioner, above-mentioned T2 can also be set to other values.
When above-mentioned outdoor temperature when T2 is above, judge the frosting degree (S15) of above-mentioned outdoor heat exchanger 41.Whether the frosting degree of above-mentioned outdoor heat exchanger 41 can decide greater than H1 according to " GAP " (outdoor temperature-outdoor piping temperature).Herein, above-mentioned GAP is more big, and the air capacity that is condensed in the outdoor heat exchanger pipe arrangement is more many, and the tendency of frosting correspondingly uprises on above-mentioned pipe arrangement thus.
Specifically, the sensor 130 by above-mentioned outdoor heat exchanger detects the refrigerant piping temperature of above-mentioned outdoor heat exchanger 41, and above-mentioned control part 100 is judged the temperature gap (GAP) of above-mentioned outdoor temperatures and above-mentioned refrigerant piping temperature.And, said temperature difference and H1 value are compared.
At this, above-mentioned H1 is predefined temperature gap, can be set at about 8 ℃.Certainly, can be according to the control method of air conditioner, above-mentioned H1 can also be set to other values (S16).
As above-mentioned GAP during greater than H1, above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is many, and the output with above-mentioned induction heater 60 is adjusted to P1(first output valve thus), to improve the caloric value of above-mentioned induction heater 60.At this, above-mentioned P1 is predefined output valve, can be set to about 1200W(S20).
On the other hand, as above-mentioned GAP during greater than H2 and the value below the H1, above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is mean level, and the output with above-mentioned induction heater 60 is adjusted to P2(second output valve thus).
At this, above-mentioned H2 is predefined temperature gap, can be set to about 4 ℃ different with above-mentioned H1, and above-mentioned P2 is predefined output valve, can be set to the about 900W that is lower than above-mentioned P1.Certainly, above-mentioned H2 and P2 can be set to other values (S17, S19) according to the control method of air conditioner.
On the contrary, when judging above-mentioned GAP less than H2, above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is little, correspondingly the output of above-mentioned induction heater 60 is adjusted to P3(the 3rd output valve therewith), to reduce the caloric value of above-mentioned induction heater 60.
At this, above-mentioned P3 is predefined output valve, can be set to about 600W.But above-mentioned P3 can be set to other output valves (S18) littler than P2 according to the control method of air conditioner.
When outdoor temperature in the S14 step when T2 is following, as shown in Figure 4, can judge whether above-mentioned outdoor temperature is higher than T3 and T2 following (S21).Herein, above-mentioned T3 can be set to-5 ℃ approximately, but also can be set to other temperature values in advance according to control method.
When above-mentioned outdoor temperature is following than T3 height and T2, can judge the frosting degree (S22) of above-mentioned outdoor heat exchanger 41.Whether frosting degree can be judged greater than H3 according to above-mentioned GAP.
Say that at length by the refrigerant piping temperature of the above-mentioned outdoor heat exchanger 41 of above-mentioned outdoor heat exchanger sensor 130 detections, above-mentioned control part 100 is judged GAP according to the refrigerant piping temperature value of above-mentioned outdoor temperature and outdoor heat exchanger 41.And, above-mentioned GAP and H3 value are compared (S23).
At this, above-mentioned H3 is predefined temperature gap, can be set to about 6 ℃ different with H2 with above-mentioned H1.Certainly, can be according to the control method of air conditioner, above-mentioned H3 can also be set to other values.
As above-mentioned GAP during greater than H3, above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is many, correspondingly the output of above-mentioned induction heater 60 is adjusted to P1 therewith, with the caloric value (S20) that improves above-mentioned induction heater 60.
On the other hand, as above-mentioned GAP during greater than H4 and the value below the H3 (S24), above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is mean level, correspondingly the output of above-mentioned induction heater 60 is adjusted to P2(S19 therewith).
At this, above-mentioned H4 is predefined temperature gap, can be set to about 3 ℃.Certainly, above-mentioned H4 can be set to other values according to the control method of air conditioner.
On the contrary, when judging above-mentioned GAP less than H4 (S24), above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is little, correspondingly the output of above-mentioned induction heater 60 is adjusted to P3 therewith, with the caloric value (S18) that reduces above-mentioned induction heater 60.
In the S21 step, when above-mentioned outdoor temperature is T3 when following, can judge frosting degree (S25).Whether frosting degree can be judged greater than H5 according to above-mentioned GAP.At this, above-mentioned H5 is predefined temperature gap, can be set to about 7 ℃.Certainly, according to the control method of air conditioner, above-mentioned H5 can be set to other values.
As above-mentioned GAP during greater than H5 (S26), above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is many, correspondingly the output of above-mentioned induction heater 60 is adjusted to P1 therewith, with the caloric value (S20) that improves above-mentioned induction heater 60.
On the other hand, when the value of above-mentioned GAP is H5 when following (S26), above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is mean level, and the output with above-mentioned induction heater 60 is adjusted to P2(S19 thus).
When above-mentioned GAP in prescribed limit and above-mentioned outdoor temperature when more low, frosting degree is more many usually, and the required heat that defrosts is more many, when above-mentioned outdoor temperature is T3 when following, the heat of above-mentioned induction heater 60 is remained at least the level of P2.
In above-mentioned S12 step, be lower than when indoor temperature under the situation of T1, as shown in Figure 5, can judge outdoor temperature value (S31).Specifically, detect outdoor temperature by above-mentioned outdoor temperature sensor 110, above-mentioned control part 100 judges whether above-mentioned outdoor temperature is higher than T2(S32).As mentioned above, above-mentioned T2 is predefined temperature, can be set to about 0 ℃.
When above-mentioned outdoor temperature during greater than T2, can judge the frosting degree of above-mentioned outdoor heat exchanger 41.Whether frosting degree can judge (S32, S33) greater than H6 according to above-mentioned GAP.
At this, above-mentioned H6 is predefined temperature gap, can be set to about 7 ℃.Certainly, according to the control method of air conditioner, above-mentioned H6 can also be set to other values.
As above-mentioned GAP during greater than H6 (S34), above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is many, correspondingly the output of above-mentioned induction heater 60 is adjusted to P1 therewith, with the caloric value (S20) that improves above-mentioned induction heater 60.
On the contrary, when the value of above-mentioned GAP is H6 when following (S34), above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is mean level, correspondingly the output of above-mentioned induction heater 60 is adjusted to P2(S19 therewith).
On the other hand, in the S32 step, when judging that above-mentioned outdoor temperature is high less than T2, judge whether above-mentioned outdoor temperature is higher than T3 and T2 following (S37).And, when judging that above-mentioned outdoor temperature is for being higher than T3 and T2 when following, 100 judgements of above-mentioned control part frosting degree (S38).
Say that at length above-mentioned control part 100 judges that whether above-mentioned GAP is greater than H7(S39).At this, above-mentioned H7 is predefined temperature gap, can be set to about 6 ℃.Certainly, according to the control method of air conditioner, above-mentioned H7 can also be set to other values.
When judging that above-mentioned GAP is greater than H7, above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is many, correspondingly the output of above-mentioned induction heater 60 is adjusted to P1 therewith, with the caloric value (S20) that improves above-mentioned induction heater 60.
And when judging that above-mentioned GAP is H7 when following, above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is mean level, correspondingly the output of above-mentioned induction heater 60 is adjusted to P2(S19 therewith).
In the S37 step, when above-mentioned outdoor temperature is T3 when following, can judge frosting degree (S40).Whether frosting degree can be judged greater than H8 according to above-mentioned GAP.Herein, above-mentioned H8 is predefined temperature gap, can be set to about 5 ℃.Certainly, according to the control method of air conditioner, above-mentioned H8 can also be set to other values.
As above-mentioned GAP during greater than H8 (S41), above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is many, correspondingly the output of above-mentioned induction heater 60 is adjusted to P1 therewith, with the caloric value (S20) that improves above-mentioned induction heater 60.
On the other hand, when the value of above-mentioned GAP is H8 when following (S41), above-mentioned control part 100 judges that the frosting degree of above-mentioned outdoor heat exchanger 41 is mean level, correspondingly the output of above-mentioned induction heater 60 is adjusted to P2(S19 therewith).
Under the condition of identical GAP, when indoor temperature is low, compared with the high situation of indoor temperature, frosting degree can be more on the structure of freeze cycle, the required heat that defrosts is more, therefore, when above-mentioned indoor temperature is T1 when following, the heat of above-mentioned induction heater 60 can be remained at least the level of P2.
As mentioned above, H1～H8 is the value of judging " outdoor temperature-outdoor heat exchanger pipe arrangement temperature ", namely judges the fiducial temperature of " GAP " value, can be called " first fiducial temperature "～" the 8th fiducial temperature ".For example, H2 and H3 can be called " second fiducial temperature " and " the 3rd fiducial temperature ".In addition, as mentioned above, above-mentioned first fiducial temperature～the 8th fiducial temperature can be set to other values according to indoor temperature and outdoor temperature value.
And, for convenience of explanation, can be called " first design temperature " as the T1 of the judgment standard of indoor temperature, will be called " second design temperature " as T2 and the T3 of the judgment standard of outdoor temperature.In addition, the T2 in above-mentioned " second design temperature " can be called " first temperature ", T3 be called " second temperature ", distinguish mutually thus.
As mentioned above, in the present embodiment, according to the interval GAP value of differently setting the frosting degree that is used for the judgement outdoor heat exchanger respectively of indoor and outdoor temperature, with the GAP value that sets and actual detected to outdoor temperature and the temperature gap of outdoor heat exchanger pipe arrangement temperature compare, thereby judge frosting degree what.
According to this control method, have under the condition of temperature and outdoor heat exchanger pipe arrangement temperature outside multiple indoor, also can judge what effect of frosting degree exactly.
In addition, according to how much regulating of outdoor heat exchanger frosting degree, and the output of change induction heater can prevent the output of unnecessary induction heater thus, correspondingly can realize effective power consumption therewith.
That is, when the frosting degree of outdoor heat exchanger for a long time, improve the caloric value of induction heater, when above-mentioned frosting degree after a little while, reduce the caloric value of induction heater, thereby have the effect that can prevent unnecessary power consumption.
Claims (7)
1. air conditioner comprises:
The compressor that is used for compressed refrigerant;
The indoor heat exchanger that makes cold-producing medium and room air through above-mentioned compressor carry out heat exchange;
Make the expansion gear through the cold-producing medium decompression of above-mentioned indoor heat exchanger;
The outdoor heat exchanger that makes the cold-producing medium of being discharged by above-mentioned expansion gear and extraneous gas carry out heat exchange;
Bypass flow path makes cold-producing medium shunt to the entrance side of above-mentioned outdoor heat exchanger from the outlet side of above-mentioned compressor, thereby finishes the defrosting to above-mentioned outdoor heat exchanger in the process that heats;
Detect the temperature of above-mentioned outdoor heat exchanger and a plurality of sensors of indoor and outdoor temperature;
Improve the induction heater of the evaporating temperature of cold-producing medium according to the temperature change caloric value by the detected outdoor temperature of the sensor and outdoor heat exchanger; And
The frosting degree that temperature gap and the predefined reference temperature value of above-mentioned outdoor temperature and outdoor heat exchanger compared to judge above-mentioned outdoor heat exchanger, and control the control part of the output of above-mentioned induction heater according to this frosting degree;
The output of above-mentioned induction heater can be adjusted to first output valve, less than second output valve of above-mentioned first output valve and less than the 3rd output valve of above-mentioned second output valve;
When above-mentioned outdoor temperature is predefined the 3rd design temperature when following, control above-mentioned induction heater, so that its output valve is at least more than above-mentioned second output valve;
The said reference temperature value comprises first fiducial temperature (H1), second fiducial temperature (H2), the 3rd fiducial temperature (H3), the 4th fiducial temperature (H4), wherein, above-mentioned first fiducial temperature (H1) is higher than above-mentioned second fiducial temperature (H2), and above-mentioned the 3rd fiducial temperature (H3) is higher than above-mentioned the 4th fiducial temperature (H4);
When above-mentioned outdoor temperature is higher than than high second design temperature of above-mentioned the 3rd design temperature,
If the said temperature difference is greater than above-mentioned first fiducial temperature (H1), then the output valve of above-mentioned induction heater is above-mentioned first output valve,
If the said temperature difference is greater than above-mentioned second fiducial temperature (H2) and below above-mentioned first fiducial temperature (H1), then the output valve of above-mentioned induction heater is above-mentioned second output valve,
If the said temperature difference is below above-mentioned second fiducial temperature (H2), then the output valve of above-mentioned induction heater is above-mentioned the 3rd output valve;
When above-mentioned outdoor temperature is higher than above-mentioned the 3rd design temperature and when above-mentioned second design temperature is following,
If the said temperature difference is greater than above-mentioned the 3rd fiducial temperature (H3), then the output valve of above-mentioned induction heater is above-mentioned first output valve,
If the said temperature difference is greater than above-mentioned the 4th fiducial temperature (H4) and below above-mentioned the 3rd fiducial temperature (H3), then the output valve of above-mentioned induction heater is above-mentioned second output valve,
If the said temperature difference is below above-mentioned the 4th fiducial temperature (H4), then the output valve of above-mentioned induction heater is above-mentioned the 3rd output valve.
2. air conditioner according to claim 1, it is characterized in that, above-mentioned a plurality of sensor comprises the indoor temperature transmitter for detection of indoor temperature, whether is higher than the caloric value that predefined first design temperature is regulated above-mentioned heater according to above-mentioned indoor temperature.
3. air conditioner according to claim 1 is characterized in that, the gas-liquid separator that also comprises the entrance side that is arranged on above-mentioned compressor and liquid refrigerant is separated, and above-mentioned induction heater is arranged on the above-mentioned gas-liquid separator.
4. air conditioner according to claim 1 is characterized in that, also comprises first valve that is arranged on the above-mentioned bypass flow path and is used for the control flow of refrigerant.
5. the control method of an air conditioner, this air conditioner drives the freeze cycle that is made of compressor, indoor heat exchanger, expansion gear and outdoor heat exchanger, and the control method of this air conditioner comprises:
Comparison step compares indoor temperature and predefined first design temperature for the first time;
Comparison step according to the comparative result of above-mentioned indoor temperature and first design temperature, compares outdoor temperature and predefined second design temperature, the 3rd design temperature for the second time, and wherein, above-mentioned second design temperature is higher than above-mentioned the 3rd design temperature;
Determine the step of the temperature gap of above-mentioned outdoor temperature and outdoor heat exchanger;
The step that said temperature difference and predefined reference temperature value are compared; And
According to the comparative result of said temperature difference and said reference temperature value, regulate the step of the caloric value of the induction heater that above-mentioned outdoor heat exchanger is defrosted;
The output of above-mentioned induction heater can be adjusted to first output valve, less than second output valve of above-mentioned first output valve and less than the 3rd output valve of above-mentioned second output valve;
When above-mentioned outdoor temperature is above-mentioned the 3rd design temperature when following, control above-mentioned induction heater, so that its output valve is at least more than above-mentioned second output valve;
The said reference temperature value comprises first fiducial temperature (H1), second fiducial temperature (H2), the 3rd fiducial temperature (H3), the 4th fiducial temperature (H4), wherein, above-mentioned first fiducial temperature (H1) is higher than above-mentioned second fiducial temperature (H2), and above-mentioned the 3rd fiducial temperature (H3) is higher than above-mentioned the 4th fiducial temperature (H4);
When above-mentioned outdoor temperature is higher than above-mentioned second design temperature,
If the said temperature difference is greater than above-mentioned first fiducial temperature (H1), then the output valve of above-mentioned induction heater is above-mentioned first output valve,
If the said temperature difference is greater than above-mentioned second fiducial temperature (H2) and below above-mentioned first fiducial temperature (H1), then the output valve of above-mentioned induction heater is above-mentioned second output valve,
If the said temperature difference is below above-mentioned second fiducial temperature (H2), then the output valve of above-mentioned induction heater is above-mentioned the 3rd output valve;
When above-mentioned outdoor temperature is higher than above-mentioned the 3rd design temperature and when above-mentioned second design temperature is following,
If the said temperature difference is greater than above-mentioned the 3rd fiducial temperature (H3), then the output valve of above-mentioned induction heater is above-mentioned first output valve,
If the said temperature difference is greater than above-mentioned the 4th fiducial temperature (H4) and below above-mentioned the 3rd fiducial temperature (H3), then the output valve of above-mentioned induction heater is above-mentioned second output valve,
If the said temperature difference is below above-mentioned the 4th fiducial temperature (H4), then the output valve of above-mentioned induction heater is above-mentioned the 3rd output valve.
6. the control method of air conditioner according to claim 5 is characterized in that, when above-mentioned indoor temperature is lower than above-mentioned first design temperature, controls above-mentioned induction heater, so that its output valve is at least more than above-mentioned second output valve.
7. the control method of air conditioner according to claim 5, it is characterized in that, in the process that the interior space is heated driving above-mentioned freeze cycle, by the entrance side shunting of cold-producing medium from the outlet of above-mentioned compressor to above-mentioned outdoor heat exchanger, thereby finish defrosting to above-mentioned outdoor heat exchanger simultaneously.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020090086152A KR101605901B1 (en) | 2009-09-11 | 2009-09-11 | Air conditioner and control method thereof |
| KR10-2009-0086152 | 2009-09-11 |
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| Publication Number | Publication Date |
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| CN102022807A CN102022807A (en) | 2011-04-20 |
| CN102022807B true CN102022807B (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010151095 Expired - Fee Related CN102022807B (en) | 2009-09-11 | 2010-04-13 | Air conditioner and method for controlling the same |
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| Country | Link |
|---|---|
| EP (1) | EP2299206B1 (en) |
| KR (1) | KR101605901B1 (en) |
| CN (1) | CN102022807B (en) |
| WO (1) | WO2011031014A2 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102022807A (en) | 2011-04-20 |
| WO2011031014A3 (en) | 2011-07-07 |
| WO2011031014A2 (en) | 2011-03-17 |
| EP2299206B1 (en) | 2019-02-06 |
| KR20110028180A (en) | 2011-03-17 |
| KR101605901B1 (en) | 2016-03-23 |
| EP2299206A1 (en) | 2011-03-23 |
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