CN102175052A - Air conditioner and control method thereof - Google Patents
Air conditioner and control method thereof Download PDFInfo
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- CN102175052A CN102175052A CN201110106934XA CN201110106934A CN102175052A CN 102175052 A CN102175052 A CN 102175052A CN 201110106934X A CN201110106934X A CN 201110106934XA CN 201110106934 A CN201110106934 A CN 201110106934A CN 102175052 A CN102175052 A CN 102175052A
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Abstract
The present invention provides an air conditioner and a control method thereof, wherein the air conditioner comprises a compressor, an indoor heat converter, an outdoor expansion device, an outdoor heat converter, a reservoir, a first bypass loop, a first thermal valve, an induction heater and a controller; the first induction heater is set on one side of the reservoir to heat a refrigerant in the reservoir, so as to prevent heat from being dissipated into the outdoor air, and shorten time transmitting heat from the induction heater to the refrigerant.
Description
The application be application artificial " LG Electronics Inc. ", the applying date are that November 21, application number in 2008 are 200810179002.6, denomination of invention divides an application for the application of " air-conditioning and control method thereof ".
The cross reference of related application
The application requires the priority of korean patent application No.10-2008-0024693 (submission on March 18th, 2008), No.10-2008-0024694 (submission on March 18th, 2008), No.10-2008-0024695 (submission on March 18th, 2008), by reference their full text is comprised in this application at this.
Technical field
The present invention relates to the control method of a kind of air-conditioning and a kind of this air-conditioning.
Background technology
Air-conditioning is to be used for according to their purposes and purpose room air being remained on household electrical appliance under the optimum condition.For example, air-conditioning cooled off the interior space and in winter the interior space is heated in summer.Air-conditioning is also controlled the humidity of the interior space and room air is remained under the comfortable cleaning condition.
For example air-conditioning make life comfortable and make things convenient for articles for use to be widely used, so the user need have the performance of high energy efficiency, improvement and user-friendly product.
Air-conditioning is divided into split-type air conditioner and integral type air-conditioning.Split-type air conditioner has indoor set and the off-premises station that is separated from each other.The integral type air-conditioning is by off-premises station and indoor set be combined into integratedly.According to the installation of air conditioners structure, again air-conditioning is divided into wall-hanging air conditioner or photo frame type air-conditioning and vertical air conditioner.Wall-hanging air conditioner or photo frame type air-conditioning are installed on the wall.Slim-type air conditioner is configured to be erected on the floor.
In addition, according to the load-bearing capacity of air-conditioning, air-conditioning is divided into stand-alone type air-conditioning, medium-sized and large-size air conditioning and multi-model air-conditioning.The stand-alone type air-conditioning has the load-bearing capacity that drives an indoor set and is used for the little zone of area, for example in the family.Medium-sized and large-size air conditioning has very big load-bearing capacity and is used for company or the restaurant.The multi-model air-conditioning has the load-bearing capacity that is enough to drive a plurality of indoor sets.
In the middle of these air-conditionings, split-type air conditioner comprises indoor set and off-premises station.Indoor set is installed in the interior space, so that warm air or cold air are fed in the space of carrying out air conditioning.The off-premises station compressed refrigerant also expands cold-producing medium, makes and carry out sufficient heat exchange operation in indoor set.
Simultaneously, with regard to prior art be used to heat and the air-conditioning that freezes with regard to, when outside air temperature in heating operation greatly about 0 ℃ or when being lower than 0 ℃, the heater that for example holds liquid formula heater (sump heater) winds improving heating properties along the radial transmission line of reservoir usually, thus the heating and cooling agent.
Yet when liquid-accumulating trough formula heater was applied to reservoir, the heat that is lost in the outdoor air was very big, and transferred heat to cold-producing medium and will spend long time.And, because the service life of liquid-accumulating trough formula heater is short, therefore must often change heater, so be difficult to guarantee reliability.In addition, because heater provides identical heat, therefore be difficult to heat is controlled.
Simultaneously, at the heating operation of the prior art air-conditioning that is used for heating and freezes, when the surperficial frosting of outdoor heat converter, by being arranged on the temperature sensor on the outdoor heat converter, frequency-changeable compressor changes to low frequency, and the cross valve commutation, so temporarily carry out kind of refrigeration cycle to remove frosting.
Yet in this case, indoor heat converter is used as evaporimeter, and defrosts under refrigerating state, so indoor temperature descends.
And, the operation of air-conditioning is changed, thus high temperature refrigerant is fed to outdoor heat converter, therefore increased defrosting time.
In addition, require cross valve to be transformed into cooling down operation from heating operation, this operating reliability to cross valve has adverse effect.
Summary of the invention
Embodiment of the present invention provides a kind of air-conditioning, and this air-conditioning can improve the efficient of heating and refrigeration performance by the structure that improvement is set to the heater of reservoir.
Embodiment also provides a kind of air-conditioning, and this air-conditioning can be by being provided with induction heater and utilizing the agent of described induction heater heating and cooling and keep the heating performance under the situation that does not increase the compressor power output on the reservoir.
Embodiment of the present invention also provides a kind of air-conditioning, and this air-conditioning can make induction heater work in the defrost process of evaporimeter, so that to the more heats of low-pressure side cold-producing medium transmission of circulation that heat, thereby improves defrost performance.
Embodiment of the present invention also provides a kind of air-conditioning and control method thereof, and they can simultaneously and heat and defrost effectively.
Embodiment of the present invention also provides a kind of air-conditioning and control method thereof, their continuous heating and defrost operations by optionally carrying out normal heating control according to the temperature of outside air temperature and outdoor heat converter or heating simultaneously and defrost, and can improve the defrost performance of indoor heating performance and outdoor heat converter.
Embodiment of the present invention also provides a kind of air-conditioning and control method thereof, continuous heating and defrost operation that they hocket common defrost operation and heat simultaneously and defrost by the temperature according to outside air temperature and outdoor heat converter, and can when keeping the indoor heating performance, improve the defrost performance of outdoor heat converter.
In one embodiment, a kind of air-conditioning, described air-conditioning comprises: compressor, described compressing mechanism cause and are used for compressed refrigerant; Indoor heat converter, described indoor heat converter are configured for making the cold-producing medium that leaves described compressor to carry out heat exchange; Outdoor expansion gear, described outdoor expansion gear are configured for making the pressure of the cold-producing medium that leaves described indoor heat converter to reduce; Outdoor heat converter, described outdoor heat converter is positioned at the outlet side of described outdoor expansion gear, and is used to make described cold-producing medium and outdoor air to carry out heat exchange; Reservoir, described reservoir configurations becomes to be used for isolating gaseous refrigerant from the cold-producing medium that leaves described outdoor heat converter; First bypass circulation, described first bypass circulation is configured for the cold-producing medium from described compressor outlet side is guided to the entrance side of described outdoor heat converter; First hot-blast valve, described first hot-blast valve are positioned on described first bypass circulation and are used to control the flow of cold-producing medium of described first bypass circulation of flowing through; First induction heater, described first induction heater are arranged in a side of described reservoir and are used to heat the cold-producing medium of described reservoir; And controller, described controller is configured for controlling the operation of described at least first hot-blast valve and described first induction heater.
In another embodiment, a kind of air-conditioning, described air-conditioning comprises: compressor, described compressing mechanism cause and are used for compressed refrigerant; Indoor heat converter, described indoor heat converter are configured for making the cold-producing medium and the room air that leave described compressor to carry out heat exchange; Outdoor expansion gear, described outdoor expansion gear are configured for making the pressure of the cold-producing medium that leaves described indoor heat converter to reduce; Outdoor heat converter, described outdoor heat converter are configured for making the cold-producing medium and the outdoor air of discharging from described outdoor expansion gear to carry out heat exchange, defrost on described outdoor heat converter under predetermined condition; First hot-blast valve, described first hot-blast valve is configured for the cold-producing medium from described compressor outlet side is guided to the entrance side of described outdoor heat converter; Reservoir, described reservoir configurations becomes to be used for isolating gaseous refrigerant from the cold-producing medium that leaves described outdoor heat converter, and described reservoir comprises the induction heater that is used for the heating and cooling agent that is positioned at the one side; And controller, described controller is configured for controlling continuous heating and defrost operation according to the temperature of described outdoor heat converter and outside air temperature, makes the defrosting of indoor heating and described outdoor heat converter carry out simultaneously.
In another embodiment, a kind of air-conditioning, described air-conditioning comprises: compressor, described compressing mechanism cause and are used for compressed refrigerant; Indoor heat converter, described indoor heat converter are configured for making the cold-producing medium and the room air that leave described compressor to carry out heat exchange; Outdoor expansion gear, described outdoor expansion gear are configured for making the pressure of the cold-producing medium that leaves described indoor heat converter to reduce; Outdoor heat converter, described outdoor heat converter are configured for making the cold-producing medium and the outdoor air of discharging from described outdoor expansion gear to carry out heat exchange, defrost on described outdoor heat converter under predetermined condition; First hot-blast valve, described first hot-blast valve is configured for the cold-producing medium from described compressor outlet side is guided to the entrance side of described outdoor heat converter; Reservoir, described reservoir configurations becomes to be used for isolating gaseous refrigerant from the cold-producing medium that leaves described outdoor heat converter, and described reservoir comprises the induction heater that is positioned at the one side, is used for the heating and cooling agent; And controller, described controller is configured for controlling continuous heating and defrost operation and common defrost operation, make described continuous heating and defrost operation and described common defrost operation hocket, described continuous heating and defrost operation are suitable for carrying out simultaneously the defrosting and the indoor heating of described outdoor heat converter, and described common defrost operation is suitable for carrying out the defrosting of described outdoor heat converter.
In another embodiment, a kind of control method of air-conditioning, described method comprises: the normal heating operation that is used to heat the interior space; When carrying out the operation of described normal heating, judge whether to carry out defrost operation according to the temperature of first outside air temperature and outdoor heat converter; When the beginning defrost operation, judge whether to heat continuously and defrost operation according to predetermined condition; And in described continuous heating and defrost operation, one of them judges whether to finish described operation according to the temperature of described outdoor heat converter and defrost operation period.
Description of drawings
Provided the detail of one or more embodiments in the the accompanying drawings and the following description.From these accompanying drawings and description and claim, further feature will be apparent.
Fig. 1 is the schematic diagram that illustrates according to the heating circulation of the air-conditioning of embodiment.
Fig. 2 illustrates according to the reservoir of the embodiment of Fig. 1 and the schematic diagram of induction heater.
Fig. 3 is the schematic block diagram that illustrates according to the air-conditioning of the embodiment of Fig. 1.
Fig. 4 is the flow chart that illustrates according to the control method of the air-conditioning of the embodiment of Fig. 1.
Fig. 5 is the schematic diagram that illustrates according to the circulation of the air-conditioning of embodiment.
Fig. 6 is the schematic block diagram that illustrates according to the air-conditioning of Fig. 5 embodiment.
Fig. 7 is the flow chart that illustrates according to the control sequence of the air-conditioning of Fig. 5 embodiment.
Fig. 8 and Fig. 9 are the flow charts that illustrates according to the control method of the air-conditioning of Fig. 5 embodiment.
The specific embodiment
Now will be in detail with reference to embodiments of the present invention, the example of these embodiments illustrates in the accompanying drawings.Yet the present invention can implement with different forms, and the present invention should be contemplated to the embodiment that is limited in this proposition.But, provide these embodiments, so that the present invention is clear and complete, and scope of the present invention is fully informed to those of ordinary skill in the field.
Fig. 1 is the schematic diagram that illustrates according to the heating circulation of the air-conditioning 1 of embodiment.
With reference to Fig. 1, air-conditioning 1 comprises compressor 10, indoor heat converter 21, indoor fan 22, outdoor expansion gear 30, outdoor heat converter 41 and outdoor fan 42.Compressor 10 is compressed to HTHP with cold-producing medium.Indoor heat converter 21 is introduced refrigerant compressed so that carry out heat exchange with room air.Indoor fan 22 will be through the exhaust of hot air of heat exchange to the interior space.Outdoor expansion gear 30 makes the cold-producing medium through heat exchange expand into low pressure.Outdoor heat converter 41 makes the cold-producing medium of expansion and outdoor air carry out heat exchange.Outdoor fan 42 will be discharged into the exterior space through the cold air of heat exchange.
Particularly, under the situation of circulation that heats by air-conditioning 1, condenser is applied to indoor heat converter 21, in order to compressed machine 10 refrigerant compressed are condensed to lower temperature, evaporator application is in outdoor heat converter 41, in order to evaporating by outdoor expansion gear 30 owing to pressure reduces the cold-producing medium that becomes liquid phase simultaneously.
Thus, the cold-producing medium of circulation is being flowed through and is being had high pressure before the outdoor expansion gear 30 in heating circulation, and has low pressure after the outdoor expansion gear 30 of flowing through.Below, the cold-producing medium before the outdoor expansion gear 30 of flowing through is called high-pressure refrigerant, and the cold-producing medium after the outdoor expansion gear 30 of flowing through is called low pressure refrigerant.
In addition, be provided with second bypass circulation 60 at the outlet side of compressor 10 and guide to the entrance side of compressor 10, and second bypass circulation 60 is provided with the amount of the cold-producing medium that second hot-blast valve 61 is directed with control with the cold-producing medium that will leave compressor 10.
Particularly, the part of refrigerant that second hot-blast valve 61 will leave compressor 10 guides to the entrance side of compressor 10, increasing evaporating temperature and the evaporating pressure at the cold-producing medium of the porch of compressor 10, thereby reduces to input to the input power of compressor 10.
In addition, cold-producing medium is conducted through second hot-blast valve 61, thereby has eliminated the imbalance between the capacity of the capacity of compressor 10 and indoor heat converter 21.
In addition, be provided with first bypass circulation 70 cold-producing medium being guided to the entrance side of outdoor heat converter 41, and first bypass circulation 70 is provided with the amount of the cold-producing medium that first hot-blast valve 71 is directed with control at the outlet side of compressor 10.
Particularly, the cold-producing medium with high temperature and high pressure that first hot-blast valve 71 will leave compressor 10 guides to outdoor heat converter 41, so that carry out the defrost process of outdoor heat converter 41.
Simultaneously, when first hot-blast valve 71 and second hot-blast valve 61 were all opened, first hot-blast valve 71 and second hot-blast valve 61 guided cold-producing medium respectively as described above, make heating process and defrost process carry out simultaneously in the heating of air-conditioning 1 circulation.Below, this action type is called continuous heating and defrosting type.
In addition, be provided with receiver 80, with temporary transient reception cold-producing medium and from cold-producing medium, separate liquid refrigerant at the outlet side of indoor heat converter 21.
In addition, the outlet side at receiver 80 is provided with the 3rd bypass circulation 90 cold-producing medium is guided to the entrance side of compressor 10.The 3rd bypass circulation 90 is provided with liquid injection valve 91 with the control flow, makes the liquid refrigerant that leaves receiver 80 be introduced in the compressor 10.
When the refrigerant temperature of the outlet side of compressor 10 reached or is higher than critical value, liquid injection valve 91 was directed to liquid refrigerant in the compressor 10 at once, with the refrigerant temperature of the outlet side of control compressor 10.
In addition, be provided with reservoir 50, so that only will be introduced into compressor 10 by the gaseous refrigerant in the middle of the cold-producing medium of outdoor heat converter 41 evaporations at the outlet side of outdoor heat converter 41.Reservoir 50 can be the approximate circle column.
In addition, be provided with induction heater 100, with the cold-producing medium of heating reservoir 50 in a side of reservoir 50.
Below, induction heater 100 is described with reference to the accompanying drawings.
Fig. 2 illustrates according to the reservoir 50 of the embodiment of Fig. 1 and the schematic diagram of induction heater 100.
With reference to Fig. 2, induction heater 100 comprises: coil 120, the generation magnetic field thereby electric current flows in coil 120; And the ceramic wafer that is used to insulate 110 that is arranged on described coil 120 upsides.
Generally speaking, induction heater 100 is with the heater of induced-current as thermal source, and described induced-current is produced by magnetic field.Induction heater 100 comprises electromagnet, and high-frequency alternating current is through described electromagnet.In addition, electromagnet comprises coil 120, and high frequency electric flows in coil 120.
The heating operation of induction heater 100 will be described now.
When alternating current process coil 120, on coil 120, form the time dependent ac magnetic field of direction.The magnetic line of force 122 passes the bottom of reservoir 50.Because electromagnetic induction induces vortex flow, thereby produce predetermined heat.
That is to say the downside that wherein has coil 120 that alternating current flows through and ceramic wafer 110 to be arranged on reservoir 50.Be arranged on the upside of coil 120 as the ceramic wafer 110 of insulator, to prevent electric current towards reservoir 50.
Although in Fig. 2, the induction heater 100 of example is arranged on reservoir 50 belows, and induction heater 100 also can be wrapped on the bottom of reservoir 50.
Under induction heater 100 was installed in situation on reservoir 50 downsides, when high frequency electric was applied to coil 120, the magnetic line of force 122 passed the lower end 50a of reservoir 50.So, on the downside of reservoir 50, produce induced-current, thereby produce predetermined heat.
In order to make induction heater 100 can heat reservoir 50, the lower end 50a of reservoir 50 must be formed by the composition of the diamagnetic line of force 122 at least, for example iron.
For reservoir 50, can use the pig iron, malleable cast iron, carbon steel, steel alloy and cast iron.
Here, coil 120 is arranged on the downside of reservoir 50.This is because liquid refrigerant is arranged in the bottom of reservoir 50.Therefore, the heat that produces by coil 120 is directly delivered to liquid refrigerant.
At this moment, because induced-current only heats reservoir 50 itself, so the sensed heating of the cold-producing medium in the reservoir 50.Then, the evaporation of the liquid refrigerant of reservoir 50, thus isolate the cold-producing medium 51 of evaporation.Because induction heater 100 is to supply with the heater of heat by induced-current, so have low-heat loss and high efficiency advantage
For example, by means of induction heater 100, air-conditioning 1 carries out defrost process and reaches the degree that the evaporating temperature that makes outdoor heat converter 41 is about-8 ℃.Compare with the defrost process that the evaporating temperature that makes outdoor heat converter 41 is about-1 ℃ of this degree that only proceeds to according to prior art, the defrost performance of air-conditioning 1 is very good.
In addition, induction heater 100 can adopt the contravariant structure, with the heat of control from induction heater 100 supplies.In this case, can supply different heats with the required heat exchanger temperature of defrosting according to outdoor temperature.
Continuous heating and defrost operation according to the air-conditioning 1 of this embodiment will be described now.
Under the situation of continuously heating and defrost operation, promptly under the situation that heating operation and defrost operation carry out simultaneously, first hot-blast valve 71 and second hot-blast valve 61 are all opened.So the cold-producing medium that leaves compressor 10 is conducted through first bypass circulation 70 and second bypass circulation 60.
In this case, the cold-producing medium that is introduced in through second bypass circulation 60 in the inlet of compressor 10 raises the evaporating temperature and the evaporating pressure of the cold-producing medium of low temperature side, thereby improves the efficient of compressor 10.
In addition, be introduced in the heat that the cold-producing medium in the inlet of outdoor heat converter 41 will be scheduled to through first bypass circulation 70 and pass to the cold-producing medium of low-pressure side, thereby carry out defrost operation at outdoor heat converter 41 places.
At this moment, with regard to heating operation, when outdoor temperature was low, induction heater 100 can be worked.That is to say that when outdoor temperature was low, the evaporating temperature of the cold-producing medium of low-pressure side reduced.At this moment, the power output of compressor 10 needs to increase, make indoor inlet temperature is held in corresponding with the temperature of the reduction of the cold-producing medium of low-pressure side.
Yet when induction heater 100 work, predetermined heat is supplied to the cold-producing medium of low-pressure side, thereby alleviates the output load on the compressor 10.
At this moment, with regard to defrost operation, when outdoor heat converter 41 is an evaporimeter when being coated with frosting, the performance degradation of outdoor heat converter 41.At this moment, first hot-blast valve 71 can be opened, thereby frosting is removed from outdoor heat converter 41.
At this moment, when induction heater 100 work, more heat is delivered to the cold-producing medium of low-pressure side, thereby can improve defrost performance.
That is to say that the cold-producing medium of outdoor heat converter 41 can receive the heat of the high temperature refrigerant of first bypass circulation, 70 introducings of hanging oneself, and can also receive the predetermined heat from induction heater 100.
Therefore, can at short notice more heat be fed to outdoor heat converter 41 is used for to evaporator defrost.
Heating circulation according to the air-conditioning 1 of another embodiment will be described now.
In the heating operation of this air-conditioning 1, induction heater 100 can be arranged on outdoor heat converter (evaporimeter) pipeline, promptly with refrigerant tubing that outdoor heat converter 41 links to each other on.For example, induction heater 100 can twine around the external peripheral surface of outdoor heat converter pipeline.
In this case, the ducted cold-producing medium of outdoor heat converter is heated, and providing more heat to the outdoor heat converter 41 that carries out defrost operation, thereby improves defrosting efficiency.
Alternately, induction heater 100 can be set to receiver 80.Equally, induction heater 100 can be attached to a side of receiver 80.
Equally, when predetermined heat is fed to receiver 80 by induction heater 100, just can add the cold-producing medium in the hot receiver 80.
Therefore, in receiver 80, gaseous refrigerant and liquid refrigerant easily are separated from each other.
Fig. 3 is the schematic block diagram that illustrates according to the air-conditioning 1 of the embodiment of Fig. 1.Fig. 4 is the flow chart that illustrates according to the control method of the air-conditioning 1 of Fig. 1 embodiment.
With reference to Fig. 3 and Fig. 4, air-conditioning 1 comprises compressor 10, indoor fan 22, outdoor fan 42 and outdoor expansion gear 30.Compressor 10 compressed refrigerants.Indoor fan 22 is arranged on a side of indoor heat converter 21, being discharged into the interior space through the air of heat exchange.Outdoor fan 42 is arranged on a side of outdoor heat converter 41, so that outdoor air flows.The pressure that outdoor expansion gear 30 will leave the cold-producing medium of indoor heat converter 21 is reduced to predetermined pressure.
Air-conditioning 1 also comprises second hot-blast valve 61 and first hot-blast valve 71.Second hot-blast valve 61 will guide to the entrance side of compressor 10 from the cold-producing medium of compressor 10 outlet sides.First hot-blast valve 71 will guide to the entrance side of outdoor heat converter 41 from the cold-producing medium of the outlet side of compressor 10.
Be provided with outdoor heat converter temperature sensor 43 on the surface of outdoor heat converter 41, with the frosting on sensing chamber's outer heat-exchanger 41.Under the situation that is provided with a plurality of outdoor heat converters 41, outdoor heat converter temperature sensor 43 also can be provided with a plurality of.
Side at the off-premises station (not shown) of storage chamber outer heat-exchanger 41 is provided with outside air temperature sensor 44, with the temperature of sensing outdoor air.
Control the operation of air-conditioning 1 according to the temperature that senses by outdoor heat converter temperature sensor 43 and outside air temperature sensor 44.
Air-conditioning 1 also comprises the controller 200 of the operation of controlling this structure.Controller 200 can be controlled the operation of induction heater 100 and outdoor fan 42 according to the temperature that outdoor heat converter temperature sensor 43 and outside air temperature sensor 44 sense.
Equally, controller 200 can be controlled the operation of indoor fan 22, first hot-blast valve 71 and second hot-blast valve 61, compressor 10 and outdoor expansion gear 30.
Now with reference to Fig. 4 the heating of air-conditioning 1 and the control method of defrost operation are described.
In operation S10, air-conditioning 1 is carried out normal heating operation by the heating circulation.
In this case, in operation S11, judge whether to carry out continuous heating and defrost operation, so that carry out the defrosting of indoor heating and outdoor heat converter 41 simultaneously.
Surface temperature THex and outside air temperature Tair by outdoor heat converter temperature sensor 43 and outside air temperature sensor 44 sensing outdoor heat converters 41.In operation S 12, be 0 ℃ or be higher than under 0 ℃ the situation at outside air temperature Tair, when the temperature T Hex of outdoor heat converter 41 is lower than-7 ℃, in operation S15, carry out heating continuously and defrost operation to carry out heating operation and defrost operation simultaneously.
In operation S13, at outside air temperature Tair for-5 ℃ or be lower than under-5 ℃ the situation, when the temperature T Hex of outdoor heat converter 41 is lower than when outside air temperature Tair deducts 11 ℃ of temperature that obtain, in operation S15, carry out heating and defrost operation continuously.Simultaneously, in operation S14, at outside air temperature Tair under the situation between-5 ℃ and 0 ℃, when the temperature T Hex of outdoor heat converter 41 is lower than when outside air temperature Tair deducts 8 ℃ of temperature that obtain, in operation S15, carry out heating and defrost operation continuously.
As mentioned above, the temperature of the outdoor heat converter 41 that defrosts changes according to outside air temperature, and this is that the evaporating temperature of outdoor heat converter 41 also reduces because when outside air temperature reduces.
Yet, the control of air-conditioning 1 is not limited to temperature value under the above-mentioned condition, temperature value can change according to the defrost performance and the heating performance of expectation.Pre-determine described temperature value by controller 200.
From operation S12 to S14, when continuous heating and defrost operation began, controller 200 made indoor fan 22 low-speed runnings.In this case, in operation S16, the amount of carrying out the air of heat exchange by indoor heat converter 21 will reduce.
Second hot-blast valve 61 is opened, being directed to the entrance side of compressor 10 from the cold-producing medium that compressor 10 is discharged.In this case, in operation S17, increased the evaporating temperature and the evaporating pressure of low-pressure side cold-producing medium.
First hot-blast valve 71 is opened, being directed to the entrance side of outdoor heat converter 41 from the cold-producing medium that compressor 10 is discharged.In this case, in operation S18, high temperature refrigerant is introduced in the outdoor heat converter 41, to improve the defrosting efficiency on the outdoor heat converter 41.
In operation S19, outdoor expansion gear 30 complete openings, and the On/Off of control compressor 10 remains on about 60 ℃ with the discharge temperature with compressor 10.
Its reason is, when first hot-blast valve 71 and second hot-blast valve 61 and outdoor expansion gear 30 were all opened, the flow of the cold-producing medium that circulates in circulation changed, and makes the discharge temperature of compressor 10 to change.
In operation S20, when the discharge temperature of compressor 10 reached about 60 ℃, the temperature that is fed to the air of the interior space may become about 35 ℃.
In operation S21, utilize outside air temperature sensor 44 sensing outside air temperatures.Outside air temperature in operation S12 to S14 is called first outside air temperature, and the outside air temperature in operation S21 is called second outside air temperature.
In operation S22, when second outside air temperature is higher than 0 ℃, in operation S23, outdoor fan 42 operate as normal, and close induction heater 100.
Yet in operation S22, second outside air temperature is 0 ℃ or is lower than 0 ℃, in operation S24, and close chamber's external fan 42, and open induction heater 100.
Here, be higher than in second outside air temperature under 0 ℃ the situation, outdoor air helps outdoor heat converter 41 defrostings, so outdoor heat converter 41 operate as normal, so that obtain the defrosting energy from outdoor air.
At this moment, be 0 ℃ or be lower than under 0 ℃ the situation that in second outside air temperature outdoor air may have a negative impact to the defrosting efficiency of outdoor heat converter 41, so close chamber's outer heat-exchanger 41, and induction heater 100 work so that being provided, heat are used for defrosting.
In operation S25, judge whether to finish heating and defrost operation continuously.In operation S26,, in operation S28, finish heating and defrost operation continuously when the surface temperature THex of outdoor heat converter 41 is 2 ℃ or when being higher than 2 ℃.Yet, when the surface temperature THex of outdoor heat converter 41 is lower than 2 ℃, in operation S27, judge whether continuous heating and defrosting period through 12 minutes.
Under through 12 minutes situation, finish heating and defrost operation continuously.Under as yet not through 12 minutes situation, the operation of executable operations S16 and back thereof once more.
2 ℃ of temperature and 12 minutes periods are predetermined value, and they are by controller 200 controls.Yet this predetermined temperature and period can change according to the heating and the defrost performance of air-conditioning.
When continuous heating and defrost operation end, in operation S29, carry out the normal heating that the normal heating that does not have defrosting is operated and control.Although not shown, when carrying out normal heating control, indoor fan 22 operate as normal, and first hot-blast valve 71 and second hot-blast valve 61 are closed.
In addition, with normal mode control compressor 10, outdoor expansion gear 30, outdoor fan 42 and induction heater 100.
As mentioned above, the condition according to outside air temperature and outdoor heat converter temperature judges whether to carry out continuous heating and defrost operation.In addition, temperature and continuous heating and defrost operation period according to outdoor heat converter, judge whether to finish heating and defrost operation continuously.
According to above control method, can carry out continuous heating operation and defrost operation simultaneously.And, can the operation by induction heater 100 improve heating and defrosting efficiency, and heating and defrost operation are controlled according to the multiple condition of real-time change continuously, therefore make the energy consumption minimum in the defrost operation.
In addition, do not need to carry out the conversion of air-conditioning circulation yet, promptly do not need from the heating cyclic transformation to kind of refrigeration cycle, thereby the reliability of heat pump performance improves.
Fig. 5 is the schematic diagram that illustrates according to the air-conditioning circulation of embodiment.Fig. 6 is the schematic block diagram that illustrates according to the air-conditioning 1 of Fig. 5 embodiment.Fig. 7 is the flow chart that illustrates according to the control sequence of the air-conditioning 1 of Fig. 5 embodiment.Fig. 8 and Fig. 9 are the flow charts that illustrates according to the control method of the air-conditioning of Fig. 5 embodiment.
With reference to Fig. 5 to Fig. 9, be provided with cross valve 15 in a side of compressor 10, with the flow direction of control cold-producing medium.In addition, the formation of this circulation is identical with the formation of the embodiment of Fig. 1.Therefore, with those identical parts in the description of omitting with the embodiment of Fig. 1.
Particularly, when air-conditioning 1 normally heat circulation or heating and during defrost operation continuously, cold-producing medium is through being introduced in the indoor heat converter 21 after the compressor 10.
Then, cold-producing medium arrives reservoir 50 then, and enters compressor 10 once more through outdoor expansion gear 30, outdoor heat converter 41 and cross valve 15.At this moment, can carry out normal heating control or heating and defrost operation continuously.
At this moment, when air-conditioning 1 was carried out common defrost operation, cold-producing medium was through being introduced in the outdoor heat converter 41 so that carry out kind of refrigeration cycle after the compressor 10.
Then, cold-producing medium arrives reservoir 50 then, and enters compressor 10 once more through outdoor expansion gear 30, indoor heat converter 21 and cross valve 15.In this case, can carry out common defrost operation.
As mentioned above, can control heating circulation and kind of refrigeration cycle by closing/open cross valve 15.
With reference to Fig. 6, comprise compressor 10, indoor fan 22, outdoor fan 42 and outdoor expansion gear 30 according to the air-conditioning 1 of this embodiment.Compressor 10 compressed refrigerants.Indoor fan 22 is arranged on a side of indoor heat converter 21, being discharged into the interior space through the air of heat exchange.Outdoor fan 42 is arranged on a side of outdoor heat converter 41, so that outdoor air flows.The pressure that outdoor expansion gear 30 will leave the cold-producing medium of indoor heat converter 21 is reduced to predetermined pressure.
Air-conditioning 1 also comprises second hot-blast valve 61 and first hot-blast valve 71.Second hot-blast valve 61 will guide to the entrance side of compressor 10 from the cold-producing medium of compressor 10 outlet sides.First hot-blast valve 71 will guide to the entrance side of outdoor heat converter 41 from the cold-producing medium of compressor 10 outlet sides.
Be provided with outdoor heat converter temperature sensor 43 on the surface of outdoor heat converter 41, with the frosting on sensing chamber's outer heat-exchanger 41.Under the situation that is provided with a plurality of outdoor heat converters 41, outdoor heat converter temperature sensor 43 also can be provided with a plurality of.
Side at the off-premises station (not shown) of storage chamber outer heat-exchanger 41 is provided with outside air temperature sensor 44, with the temperature of sensing outdoor air.
Control the operation of air-conditioning 1 according to the temperature that senses by outdoor heat converter temperature sensor 43 and outside air temperature sensor 44.
Air-conditioning 1 also comprises cross valve 15.Cross valve 15 is arranged on a side of compressor 10, promptly at the entrance side or the outlet side of compressor 10, with the flow direction of control cold-producing medium.
Air-conditioning 1 also comprises the controller 200 of the operation of controlling this structure.That is to say the operation that can come control room external fan 42 and induction heater 100 according to the temperature that senses by outdoor heat converter temperature sensor 43 and outside air temperature sensor 44.
Equally, the operation of controller 200 control room internal fans 22, cross valve 15, first hot-blast valve 71 and second hot-blast valve 61, compressor 10 and outdoor expansion gear 30.
Fig. 7 is the flow chart that illustrates according to the control sequence of the air-conditioning of Fig. 5 embodiment.Fig. 8 is the flow chart that illustrates according to the control method of the air-conditioning 1 of Fig. 5 embodiment.
With reference to Fig. 7 and Fig. 8, can alternately carry out normal heating control, heating and defrost operation and common defrost operation continuously according to the air-conditioning 1 of this embodiment.Normal heating control is used for the heating circulation of indoor heating.Heating and defrost operation are used for carrying out indoor heating and defrost operation simultaneously under the situation that first hot-blast valve 71 is opened continuously.Common defrost operation is used for carrying out kind of refrigeration cycle (contrary heating circulation) under the situation of not carrying out indoor heating.
Particularly, normal heating control and continuous heating and defrost operation can alternately be carried out.In this process, when continuous heating and defrost operation have carried out pre-determined number or more times when counting, perhaps when outside air temperature Tair be predetermined value or when higher, can carry out existing defrost operation.
With reference to Fig. 7, control air-conditioning 1 makes when normal heating control and heats continuously and defrost operation when carrying out 10 times respectively, carries out 1 time common defrost operation.This process can repeat.
The number of repetition of heating and defrost operation is not limited thereto continuously, but can change according to needed defrosting and heating operation.
Describe the control method of air-conditioning 1 in detail now with reference to Fig. 8.
In operation S31, when air-conditioning 1 work, carry out the normal heating control that heating circulates and is used for the normal heating operation.
That is to say that closing/open carrying out heating of control cross valve 15 circulates.With normal mode control compressor 10, indoor fan 22, outdoor fan 42, outdoor expansion gear 30 and induction heater 100.Close first hot-blast valve 71 and second hot-blast valve 61.
In operation S32, judge whether to carry out defrost operation.
Particularly, surface temperature THex and the outside air temperature Tair by outdoor heat converter temperature sensor 43 and outside air temperature sensor 44 sensing outdoor heat converters 41.
In operation S33, be 0 ℃ or be higher than under 0 ℃ the situation at outside air temperature Tair, when the temperature T Hex of outdoor heat converter 41 is lower than approximately-7 ℃, in operating S36, can begin defrost operation.
In operation S34, for-5 ℃ or be lower than under-5 ℃ the situation,, in operation S36, can carry out defrost operation when the temperature T Hex of outdoor heat converter 41 is lower than when outside air temperature Tair deducts 11 ℃ of resulting temperature at outside air temperature Tair.At this moment, in operation S35, at outside air temperature Tair between approximately-5 ℃ and under the situation between about 0 ℃, when the temperature T Hex of outdoor heat converter 41 is lower than when outside air temperature Tair deducts 8 ℃ of resulting temperature, in operation S36, can carry out defrost operation.Here, outside air temperature Tair is called first outside air temperature.
For according to first outside air temperature of this embodiment determine with according to first outside air temperature of Fig. 1 embodiment really phasing with.
As mentioned above, the temperature that is used for outdoor heat converter 41 defrostings changes according to first outside air temperature, and its reason is that when outside air temperature reduced, the evaporating temperature of outdoor heat converter 41 also reduced.
Yet, the control of air-conditioning 1 is not limited under these conditions temperature value, and described temperature value can change according to the defrost performance and the heating performance of expectation.Described temperature value is pre-determined by controller 200.
Judgement is to carry out heating continuously and defrost operation or carry out common defrost operation.In operation S37, as mentioned above, heating and defrost operation can be used for carrying out simultaneously heating operation and defrost operation continuously, and common defrost operation can carry out in kind of refrigeration cycle.
Particularly, in operation S38, judge heating continuously and defrost operation whether executed 10 times or more times.When this operation execution number of times is less than 10 times, in operation S40, carry out heating and defrost operation continuously.When this operation executed 10 times or more times, in operation S39, judge whether outside air temperature Tair is-10 ℃ or is higher than-10 ℃.
When outside air temperature Tair for-10 ℃ or when being higher than-10 ℃, in operation S40, carry out heating and defrost operation continuously.When outside air temperature Tair is lower than-10 ℃, in operation S44, carry out common defrost operation.Herein, outside air temperature Tair is called the 3rd outside air temperature.
The heating and the number of repetition (10 times) of defrost operation and the reference value (10 ℃) of the 3rd outside air temperature are not limited thereto continuously, but can as required heating performance and defrost performance change.
When considering heating performance and defrost performance, the number of repetition of heating and defrost operation can be greater than the number of repetition of common defrost operation continuously.
To be described in the control method under the situation of continuous heating and defrost operation now, but this does not illustrate in the accompanying drawings.
Second hot-blast valve 61 is opened, will be directed to the entrance side of compressor 10 from the cold-producing medium that compressor 10 is discharged.In this case, the evaporating temperature and the evaporating pressure of low-pressure side cold-producing medium have been increased.
First hot-blast valve 71 is opened, will be directed to the entrance side of outdoor heat converter 41 from the cold-producing medium that compressor 10 is discharged.In this case, high temperature refrigerant is incorporated in the outdoor heat converter 41, to improve the defrosting efficiency on the outdoor heat converter 41.
When first hot-blast valve 71 and second hot-blast valve 61 and outdoor expansion gear 30 whole unlatchings, the changes in flow rate of the cold-producing medium that in circulation, circulates, thereby the discharge temperature of controlled system compressor 10.
When the discharge temperature of compressor 10 reached about 60 ℃, the temperature that is fed to the air of the interior space can become about 35 ℃.
Utilize outside air temperature sensor 44 sensing outside air temperatures.Herein, outside air temperature is called second outside air temperature, and this is the same with second outside air temperature according to Fig. 1 embodiment.
When second outside air temperature is higher than 0 ℃, outdoor fan 42 operate as normal, and induction heater 100 cuts out.
Yet second outside air temperature is 0 ℃ or is lower than 0 ℃, close chamber's external fan 42, and open induction heater 100.
, be higher than in second outside air temperature under 0 ℃ the situation, outdoor air helps outdoor heat converter 41 defrostings, so outdoor heat converter 41 operate as normal are so that obtain the defrosting energy from outdoor air herein.
At this moment, be 0 ℃ or be lower than under 0 ℃ the situation in second outside air temperature, outdoor air may have a negative impact to the defrosting efficiency of outdoor heat converter 41, so close chamber's outer heat-exchanger 41, and makes the heat of induction heater 100 work to be provided for defrosting.
In operation S41, judge whether to finish heating and defrost operation continuously.In operation S42,, in operation S48, finish heating and defrost operation continuously when the surface temperature THex of outdoor heat converter 41 is 2 ℃ or when being higher than 2 ℃.Yet, when the surface temperature THex of outdoor heat converter 41 is lower than 2 ℃, in operation S43, judge whether continuous heating and defrosting period through 12 minutes.
Under through 12 minutes situation, finish heating and defrost operation continuously.Under as yet not through 12 minutes situation, carry out heating and defrost operation continuously once more.
2 ℃ of temperature and 12 minutes periods of defrosting are predetermined value, and they are by controller 200 controls.Yet this predetermined temperature and period can change according to the heating and the defrost performance of air-conditioning.
To be described among the operation S39 when the 3rd outside air temperature is lower than-10 ℃ the control method of execution under the common defrost operation situation in operation S44 now.
At first, control cross valve 15 closes/opens to carry out kind of refrigeration cycle.Then, close chamber's internal fan 22 is incorporated into cold air in the interior space preventing, close chamber's external fan 42 is to prevent that outdoor air from having a negative impact to defrosting simultaneously.
In addition, increase the frequency of compressor 10, and open indoor expansion gear (not shown), and outdoor expansion gear 30 is opened fully.
In operation S45, judge whether to finish common defrost operation.
Particularly, when the surface temperature THex of outdoor heat converter 41 is 25 ℃ or when being higher than 25 ℃, in operation S48, finish common defrost operation.When the surface temperature THex of outdoor heat converter 41 is lower than 25 ℃, in operation S47, judge whether the defrosting period through 12 minutes.
When 12 minutes defrosting period is over and done with, in operation S48, finish common defrost operation.When defrosting period past tense not as yet, can still carry out common defrost operation.
In operation S48, when finishing continuous heating and defrost operation or common defrost operation, in operation S49, carry out the normal heating of the normal heating operation that is used for not have defrosting and control.Above process shows, carries out one-time continuous heating and defrost operation or common defrost operation in the normal heating process.
In a word, according to the embodiment of Fig. 1, repeat to control continuous heating and defrost operation and normal heating operation according to predetermined condition.According to the embodiment of Fig. 5, in process, increased the process of optionally controlling common defrost operation according to the embodiment of Fig. 1.
Therebetween, although not shown, in the normal heating process, control cross valve 15 close/open the circulation that heats.
In addition, with normal mode control room internal fan 22, and close first hot-blast valve 71 and second hot-blast valve 61.In addition, with normal mode control compressor 10, outdoor expansion gear 30, outdoor fan 42 and induction heater 100.
As mentioned above, control common defrost operation, remain in outdoor heat converter 41 lip-deep frostings thereby remove according to the surface temperature of outdoor heat converter 41 and the period of defrosting.
Its reason is, at heating operation with have only in heating and the defrost operation seldom heat to be fed to outdoor heat converter 41 continuously to be used for defrosting, therefore can not be able to defrost completely.
Yet, under the situation of carrying out common defrost operation, do not heat, but can improve defrost performance.
In a word, alternately carry out the continuous heating and defrost operation that can improve the heating performance and the common defrost operation that can improve defrost performance, thereby keep heating and defrost performance effectively.
According to described embodiment, induction heater is arranged on a side of reservoir, is lost to the heat of outdoor air and shortening heat is delivered to cold-producing medium from induction heater time with minimizing.
In addition, because the service life of induction heater itself is very long, thereby can guarantee the reliability of heater.When the contravariant structure applications during in induction heater, can be controlled heat according to outside air temperature.
In addition, in heating process, heat is fed to the cold-producing medium of heating circulation mesolow side from induction heater, makes it possible to improve under the situation that does not further increase the compressor power output heating performance.
In addition, induction heater is worked in defrost process and is used to remove the frosting that covers evaporimeter, makes more heat can be passed to the cold-producing medium of low-pressure side.Therefore, can improve the defrost performance of air-conditioning.
In addition, according to continuous heating and the defrost operation that the temperature of outside air temperature and outdoor heat converter is optionally carried out normal heating control or heated simultaneously and defrost, therefore improved the defrost performance and the indoor heating performance of outdoor heat converter.
In addition, can simultaneously and heat effectively and defrost, and need not between heating circulation and kind of refrigeration cycle, to change, therefore also do not need to control cross valve for the defrosting of outdoor heat converter.Can improve reliability of products like this.
In addition, although make frosting may remain on the outdoor heat converter, carry out common defrost operation, just can improve defrost performance by replacing owing in continuous heating and defrost operation, utilizing a spot of heat to defrost.
Although described above-mentioned embodiment with reference to a large amount of illustrated embodiment of the present invention, but should be understood that, still can make other many modifications and remodeling by those of ordinary skills, these modifications and remodeling all will fall in the spirit and scope of the present invention.More specifically, can be in the scope of this specification, accompanying drawing and claims aspect being provided with of parts and/or main combination configuration, make multiple remodeling and modification.Except that at parts and/or the remodeling aspect being provided with and revise, alternative use also is conspicuous for those of ordinary skills.
Claims (15)
1. air-conditioning, described air-conditioning comprises:
Compressor, described compressing mechanism cause and are used for compressed refrigerant;
Indoor heat converter, described indoor heat converter are configured for making the cold-producing medium and the room air that leave described compressor to carry out heat exchange;
Outdoor expansion gear, described outdoor expansion gear are configured for making the pressure of the cold-producing medium that leaves described indoor heat converter to reduce;
Outdoor heat converter, described outdoor heat converter are configured for making the cold-producing medium and the outdoor air of discharging from described outdoor expansion gear to carry out heat exchange, defrost on described outdoor heat converter under predetermined condition;
First hot-blast valve, described first hot-blast valve is configured for the cold-producing medium from described compressor outlet side is guided to the entrance side of described outdoor heat converter;
Reservoir, described reservoir configurations becomes to be used for isolating gaseous refrigerant from the cold-producing medium that leaves described outdoor heat converter, and described reservoir comprises the induction heater that is positioned at the one side, is used for the heating and cooling agent; And
Controller, described controller are configured for controlling continuous heating and defrost operation according to the temperature of described outdoor heat converter and outside air temperature, make the defrosting of indoor heating and described outdoor heat converter carry out simultaneously,
Wherein, when the temperature value of described outdoor heat converter is not in predetermined temperature range, can determine whether described continuous heating and defrost operation finish according to the operating time of described continuous heating and defrost operation.
2. air-conditioning as claimed in claim 1, wherein, described controller is controlled described first hot-blast valve, makes to open at first hot-blast valve described in described continuous heating and the defrost operation.
3. air-conditioning as claimed in claim 1 also comprises:
Second hot-blast valve, described second hot-blast valve is configured for the cold-producing medium from described compressor outlet side is guided to the entrance side of described compressor,
Wherein, described controller is controlled described second hot-blast valve, makes to open at second hot-blast valve described in described continuous heating and the defrost operation.
4. air-conditioning as claimed in claim 1, wherein, in described continuous heating and defrost operation, described controller is according to the operation of the fan of outside air temperature control off-premises station.
5. air-conditioning as claimed in claim 1, wherein, in described continuous heating and defrost operation, described controller is controlled the operation of described induction heater according to outside air temperature.
6. air-conditioning, described air-conditioning comprises:
Compressor, described compressing mechanism cause and are used for compressed refrigerant;
Indoor heat converter, described indoor heat converter are configured for making the cold-producing medium and the room air that leave described compressor to carry out heat exchange;
Outdoor expansion gear, described outdoor expansion gear are configured for making the pressure of the cold-producing medium that leaves described indoor heat converter to reduce;
Outdoor heat converter, described outdoor heat converter are configured for making the cold-producing medium and the outdoor air of discharging from described outdoor expansion gear to carry out heat exchange, defrost on described outdoor heat converter under predetermined condition;
First hot-blast valve, described first hot-blast valve is configured for the cold-producing medium from described compressor outlet side is guided to the entrance side of described outdoor heat converter;
Reservoir, described reservoir configurations becomes to be used for isolating gaseous refrigerant from the cold-producing medium that leaves described outdoor heat converter, and described reservoir comprises the induction heater that is positioned at the one side, is used for the heating and cooling agent; And
Controller, described controller is configured for controlling continuous heating and defrost operation and common defrost operation, make described continuous heating and defrost operation and described common defrost operation hocket, described continuous heating and defrost operation are suitable for carrying out simultaneously the defrosting and the indoor heating of described outdoor heat converter, described common defrost operation is suitable for carrying out the defrosting of described outdoor heat converter
Wherein, can determine whether begin operation according to the number of times of described continuous heating and defrost operation at the described common defrost operation of described continuous heating and defrost operation end back.
7. air-conditioning as claimed in claim 6, wherein, described controller is controlled to and makes that carrying out normal heating after described common defrost operation finishes operates.
8. air-conditioning as claimed in claim 7, wherein, in the normal heating operation, described controller judges whether to carry out defrost operation according to the temperature of outside air temperature and described outdoor heat converter.
9. air-conditioning as claimed in claim 6, wherein, described controller judges whether to carry out common defrost operation according to outside air temperature when the number of times of described continuous heating and defrost operation surpasses pre-determined number.
10. the control method of an air-conditioning, described method comprises:
Be used to heat the normal heating operation of the interior space;
When carrying out the operation of described normal heating, judge whether to carry out defrost operation according to the temperature of first outside air temperature and outdoor heat converter;
When the beginning defrost operation, judge whether to heat continuously and defrost operation according to predetermined condition; And
In described continuous heating and defrost operation, one of them judges whether to finish described operation according to the temperature of described outdoor heat converter and defrost operation period,
Wherein, when the temperature value of described outdoor heat converter is not in predetermined temperature range, can determine whether described continuous heating and defrost operation finish according to the operating time of described continuous heating and defrost operation.
11. method as claimed in claim 10 also is included in and detects second outside air temperature in described continuous heating and the defrost operation.
12. method as claimed in claim 11 wherein, when described second outside air temperature is 0 ℃ or when being lower than 0 ℃, is closed the fan of off-premises station, and is opened induction heater.
13. method as claimed in claim 10 also comprises judging when at the described defrost operation of beginning and carries out common defrost operation when not carrying out described continuous heating and defrost operation.
14. method as claimed in claim 13, wherein, the number of times of described continuous heating and defrost operation be 10 times or more frequently situation and the 3rd outside air temperature be lower than under-10 ℃ the situation of one of situation, carry out described common defrost operation.
15. method as claimed in claim 13, wherein, in described common defrost operation, one of them judges whether to finish described common defrost operation according to the temperature of described outdoor heat converter and common defrost operation period.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020080024694A KR100929192B1 (en) | 2008-03-18 | 2008-03-18 | Air conditioner |
| KR1020080024695A KR20090099613A (en) | 2008-03-18 | 2008-03-18 | Air conditioner and control method thereof |
| KR10-2008-0024695 | 2008-03-18 | ||
| KR10-2008-0024693 | 2008-03-18 | ||
| KR10-2008-0024694 | 2008-03-18 | ||
| KR1020080024693A KR100997284B1 (en) | 2008-03-18 | 2008-03-18 | Air conditioner and control method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101790026A Division CN101539348B (en) | 2008-03-18 | 2008-11-21 | Air conditioner and control method thereof |
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| Publication Number | Publication Date |
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| CN102175052A true CN102175052A (en) | 2011-09-07 |
| CN102175052B CN102175052B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110106934.XA Expired - Fee Related CN102175052B (en) | 2008-03-18 | 2008-11-21 | Air conditioner and control method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528142A (en) * | 2012-07-05 | 2014-01-22 | 珠海格力电器股份有限公司 | Anti-frosting air conditioner and control method thereof |
| CN104949409A (en) * | 2015-07-13 | 2015-09-30 | 金鑫 | System and method for flexibly defrosting air-source heat pump without starting compressor |
| CN106574798A (en) * | 2014-10-15 | 2017-04-19 | 夏普株式会社 | Air conditioner |
| CN109386982A (en) * | 2018-09-27 | 2019-02-26 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN112611074A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method, storage medium and control device thereof |
| CN112611073A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method, storage medium and control device thereof |
| CN113074474A (en) * | 2021-04-12 | 2021-07-06 | 长虹美菱股份有限公司 | Intermediate liquid collection energy storage evaporator and efficient refrigerating system thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204029A (en) * | 1997-06-27 | 1999-01-06 | 三星电子株式会社 | Defrosting apparatus of air conditioner and method thereof |
| JP2002107014A (en) * | 2000-10-04 | 2002-04-10 | Sharp Corp | Air conditioner |
| CN1113196C (en) * | 1997-12-18 | 2003-07-02 | 富士通将军股份有限公司 | Air conditioner control method and apparatus of same |
| CN1517626A (en) * | 2003-01-10 | 2004-08-04 | 松下电器产业株式会社 | Air conditioner and its control method |
| JP2005083704A (en) * | 2003-09-10 | 2005-03-31 | Mitsubishi Electric Corp | Refrigerating cycle and air conditioner |
| WO2008016265A1 (en) * | 2006-08-03 | 2008-02-07 | Lg Electronics Inc. | Air conditioner and controlling method thereof |
-
2008
- 2008-11-21 CN CN201110106934.XA patent/CN102175052B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1204029A (en) * | 1997-06-27 | 1999-01-06 | 三星电子株式会社 | Defrosting apparatus of air conditioner and method thereof |
| CN1113196C (en) * | 1997-12-18 | 2003-07-02 | 富士通将军股份有限公司 | Air conditioner control method and apparatus of same |
| JP2002107014A (en) * | 2000-10-04 | 2002-04-10 | Sharp Corp | Air conditioner |
| CN1517626A (en) * | 2003-01-10 | 2004-08-04 | 松下电器产业株式会社 | Air conditioner and its control method |
| JP2005083704A (en) * | 2003-09-10 | 2005-03-31 | Mitsubishi Electric Corp | Refrigerating cycle and air conditioner |
| WO2008016265A1 (en) * | 2006-08-03 | 2008-02-07 | Lg Electronics Inc. | Air conditioner and controlling method thereof |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528142B (en) * | 2012-07-05 | 2016-02-03 | 珠海格力电器股份有限公司 | Anti-frosting air conditioner and control method thereof |
| CN103528142A (en) * | 2012-07-05 | 2014-01-22 | 珠海格力电器股份有限公司 | Anti-frosting air conditioner and control method thereof |
| CN106574798A (en) * | 2014-10-15 | 2017-04-19 | 夏普株式会社 | Air conditioner |
| CN106574798B (en) * | 2014-10-15 | 2020-02-28 | 夏普株式会社 | Air conditioner |
| CN104949409B (en) * | 2015-07-13 | 2017-03-29 | 金鑫 | A kind of flexible air source heat pump defrosting system and method that need not start compressor |
| CN104949409A (en) * | 2015-07-13 | 2015-09-30 | 金鑫 | System and method for flexibly defrosting air-source heat pump without starting compressor |
| CN109386982A (en) * | 2018-09-27 | 2019-02-26 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN109386982B (en) * | 2018-09-27 | 2020-06-12 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN112611074A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method, storage medium and control device thereof |
| CN112611073A (en) * | 2020-11-30 | 2021-04-06 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method, storage medium and control device thereof |
| WO2022068281A1 (en) * | 2020-11-30 | 2022-04-07 | 青岛海尔空调电子有限公司 | Air conditioning system and defrosting control method therefor, and storage medium and control apparatus |
| CN113074474A (en) * | 2021-04-12 | 2021-07-06 | 长虹美菱股份有限公司 | Intermediate liquid collection energy storage evaporator and efficient refrigerating system thereof |
| CN113074474B (en) * | 2021-04-12 | 2022-06-07 | 长虹美菱股份有限公司 | Intermediate liquid collection energy storage evaporator and efficient refrigerating system thereof |
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