CN102472539B - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- CN102472539B CN102472539B CN201080031313.3A CN201080031313A CN102472539B CN 102472539 B CN102472539 B CN 102472539B CN 201080031313 A CN201080031313 A CN 201080031313A CN 102472539 B CN102472539 B CN 102472539B
- Authority
- CN
- China
- Prior art keywords
- temperature
- defrosting
- compressor
- rotating speed
- heat converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
-
- 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
-
- 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
- F25B2500/00—Problems to be solved
- F25B2500/31—Low ambient temperatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0252—Compressor control by controlling speed with two speeds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner. A control portion (32) of an air conditioner (30) issues instructions to switch a four-way valve (10) and rotate a compressor (11) at a first number of rotations if an ambient temperature detected by a temperature sensor (12) is not more than a predetermined reference value when the air conditioner is switched from a defrosting operation to a heating operation. On the other hand, if the detected ambient temperature exceeds the reference value, the control portion (32) sets the number of rotations of the compressor (11) at a second number of rotations which is lower than the first number of rotations, and starts the heating operation. It is preferable that the first number of rotations is the maximum settable number of rotations, and the second number of rotations is set on the basis of the number of rotations of the compressor (11) at the heating operation just before starting the defrosting operation.
Description
Technical field
The present invention relates to the air conditioner of heat-pump-type, the air conditioner that particularly warming operation and defrosting running hocket.
background technology
In the air conditioner of heat-pump-type, in the time utilizing heating circulation to indoor heating, because outdoor heat exchanger absorbs heat from extraneous air, so temperature reduces.In the situation that external air temperature is low, long-pending white on outdoor heat converter due to airborne moisture generation condensation.In the time that the frost of the surface attachment of outdoor heat converter acquires a certain degree, need to be removed, this operation is commonly referred to as defrosting.
In defrosting running, by switching cross valve, change to kind of refrigeration cycle from heating circulation.Its result, by the refrigerant flow direction outdoor heat converter that makes to be heated up by compressor, removes the frost of the surface sediment of outdoor heat converter.In defrosting running, stop indoor fan and outdoor fan.
Japanese Patent Publication communique JP No. 58-115235 (patent documentation 1) discloses for shortening the defrosting technology of the duration of runs.According to the technical scheme of the document, in the certain hour in the warming operation before and after defrosting running neutralization defrosting running, the rotating speed of compressor is set to higher than the setting speed calculating according to room temperature and setting value at room temperature.
In Japanese Patent Publication communique JP No. 2007-278536 (patent documentation 2), the air conditioner that is provided with the bypass circulation with cold-producing medium heater in heat pump type refrigerating circulation is disclosed.The air conditioner of the document, in the time that warming operation finishes, by making the refrigerant flow direction outdoor heat converter overheated because of cold-producing medium heater, needn't switch cross valve and just can carry out the defrosting of outdoor heat converter.
Patent documentation 1: No. 58-115235, Japanese Patent Publication communique JP
Patent documentation 2: No. 2007-278536, Japanese Patent Publication communique JP
Be when more than-8 ℃ at external air temperature, use the defrosting of kind of refrigeration cycle required time of turning round just can finish in 15 minutes, still, in the time that external air temperature is below-15 ℃, the temperature rise meeting of outdoor heat converter needs the time.Therefore,, if continue defrosting running until defrost completely under the lower state of external air temperature, room temperature can be too low.
According to No. 58-115235, aforesaid Japanese Patent Publication communique JP (patent documentation 1), if in the certain hour in the warming operation before and after defrosting running neutralization defrosting running, improve the rotating speed of compressor, can suppress room temperature and reduce.
But, if because the rise of rotational speed of compressor causes room temperature sharply excessively to rise to maximum (top) speed, utilize feedback running subsequently that ambient-temp-stable can be taken a long time.Otherwise when the rotating speed of compressor is not enough, under the lower state of external air temperature, refrigerant pressure reduces, so be difficult to switch because refrigerant pressure deficiency may cause cross valve.This is because the switching of cross valve need to assisting from the refrigerant pressure of compressor.
If such according to Japanese Patent Publication communique JP No. 2007-278536 (patent documentation 2), setting has the bypass circulation of cold-producing medium heater, can be by the high pressure ejection cold-producing medium from compressor and cold-producing medium heater both sides' energy all for the defrosting of outdoor heat converter.So, can shorten the duration of runs of defrosting., owing to needing to arrange cold-producing medium heater and bypass circulation outside common refrigerant lines, thus cause off-premises station to maximize, and cause controlling complicated.
summary of the invention
The object of the present invention is to provide a kind of air conditioner, even when external air temperature is lower, also can use heating cyclic switching as the defrost method of running of kind of refrigeration cycle, the warming operation after defrosting running is stablized.
Air conditioner of the present invention comprises: the compressor of variable speed; Outdoor heat converter; Indoor heat converter; Cross valve; The first temperature sensor; And control part, control compressor and cross valve.Cross valve switches the flow direction of cold-producing medium of compressor compresses so that the refrigerant flow direction indoor heat converter of compressor compresses when warming operation, and in the time of defrosting running the refrigerant flow direction outdoor heat converter of compressor compresses.The first temperature sensor detects external air temperature.In the time being switched to warming operation from defrosting running, external air temperature exceedes in the situation of external air temperature a reference value of regulation, control part sends switching command to cross valve, and makes the rotating speed of the described compressor of compressor when being about to start the warming operation before defrosting running add the rotating speed entry into service of the first increment of regulation.On the other hand, in the time being switched to warming operation from defrosting running, external air temperature is below external air temperature a reference value in the situation that, control part sends switching command to cross valve, and makes compressor to exceed enough regulation rotating speed entrys into service that rotating speed in the situation of described external air temperature a reference value is high and can switch described cross valve than external air temperature.
Preferably, the maximum (top) speed in the rotating speed that can set that regulation rotating speed is compressor.
Preferably, air conditioner also comprises the second temperature sensor, and the second temperature sensor detects room temperature.In this case, external air temperature exceedes in the situation of described external air temperature a reference value, finish defrosting turn round and start warming operation after the room temperature that detects while arriving the scope corresponding with setting value at room temperature, the rotating speed of described compressor when control part changes to that being about to starts to defrost and turn round warming operation before by the rotating speed of compressor adds the rotating speed of the second increment of the regulation that is less than described the first increment.After this, the rotating speed of compressor is carried out to FEEDBACK CONTROL, so that the room temperature detecting remains setting value at room temperature.In addition, external air temperature is below described external air temperature a reference value in the situation that, when the room temperature detecting after end defrosting is turned round and started warming operation arrives the scope corresponding with setting value at room temperature, the rotating speed of the described compressor when rotating speed of described compressor is changed to the warming operation that being about to start before defrosting running by described control part adds the rotating speed of the 3rd increment of regulation, and the rotating speed of described compressor is carried out to FEEDBACK CONTROL, so that the room temperature detecting remains described setting value at room temperature.
Preferably, air conditioner also comprises three-temperature sensor, the temperature of three-temperature sensor sensing chamber outer heat-exchanger.In this case, in the time of first condition or second condition establishment, control part finishes defrosting running, and first condition refers to that the temperature of the outdoor heat converter detecting is more than the defrosting of regulation finishes fiducial temperature, and second condition refers to and starts after defrosting running through the longest defrosting time of regulation.
Preferably, in the time finishing defrosting running due to second condition establishment, the higher limit of the rotating speed that control part changes when the room temperature that detects is arrived to the scope corresponding with described setting value at room temperature and the rotating speed when rotating speed of compressor is carried out to FEEDBACK CONTROL, is restricted to lower than the maximum (top) speed that can set.
Preferably, after starting warming operation and having passed through the defrosting binding hours of regulation, and the temperature of the outdoor heat converter detecting is according to external air temperature and default defrosting while starting below fiducial temperature, and control part starts defrosting running.In this case, finish when running defrosting when meeting second condition, finish defrosting running during with meeting first condition compared with, the defrosting binding hours of the condition of control part when start defrosting running as next time is set for shorter.
Preferably, air conditioner also comprises the outdoor fan of variable speed, and outdoor fan is blown to outdoor heat converter.In this case, when the temperature of the outdoor heat converter detecting starts fiducial temperature higher than defrosting and according to external air temperature and below default frosting fiducial temperature time, with the temperature of the outdoor heat converter detecting during higher than frosting fiducial temperature compared with, control part improves the rotating speed of outdoor fan.
According to the present invention, corresponding external air temperature, the rotating speed of compressor when change starts warming operation after defrosting running finishes.Therefore,, can avoid can not switching because the insufficient pressure that spues of compressor causes cross valve during lower than a reference value at external air temperature.When external air temperature is during higher than a reference value, compared with the situation with external air temperature below a reference value, after reducing the rotating speed of setting compressor, start warming operation, so can suppress the sharply rising of room temperature.Its result, can stably carry out room temperature control by feedback running subsequently.
accompanying drawing explanation
Fig. 1 is the refrigerant lines figure that represents air conditioner 30 structures of embodiment of the present invention 1.
Fig. 2 is the figure of the refrigerant flow direction while defrosting running for the refrigerant lines figure of key diagram 1.
Fig. 3 is the outside drawing of indoor set 7.
Fig. 4 is the sectional drawing of indoor set 7 internal structures of simple presentation graphs 3.
Fig. 5 is the outside drawing of off-premises station 14.
Fig. 6 is the figure of off-premises station 14 internal structures of simple presentation graphs 5.
Fig. 7 is the functional block diagram of air conditioner 30.
Fig. 8 is the flow chart of the action of the control part 32 of presentation graphs 7.
Fig. 9 is the figure of the determination methods for outdoor heat converter 8 frostings are described.
Figure 10 is the flow chart that represents the action of the control part 32 of embodiment of the present invention 2.
Figure 11 is the flow chart that represents the action of the control part 32 of embodiment of the present invention 3.
Description of reference numerals
1 temperature sensor (room temperature is used)
2 temperature sensors (indoor heat converter is used)
12 temperature sensors (external air temperature is used)
13 temperature sensors (outdoor heat converter is used)
3 indoor heat converters
4 indoor fans
7 indoor sets
8 outdoor heat converters
9 outdoor fans
10 cross valves
11 compressors
14 off-premises stations
15 capillaries
30 air conditioners
31 operating portions
32 control parts
The specific embodiment
Below, the embodiment that present invention will be described in detail with reference to the accompanying.In addition, give identical Reference numeral to identical or corresponding part, and the description thereof will be omitted.
(embodiment 1)
Fig. 1 is the refrigerant lines figure that represents air conditioner 30 structures of embodiment of the present invention 1.The flow direction of cold-producing medium when Fig. 1 represents warming operation.
The air conditioner 30 of Fig. 1 is the separate type devices that comprise indoor set 7 and off-premises station 14.Indoor set 7 comprises indoor heat converter 3 and indoor fan 4.Off-premises station 14 comprises: outdoor heat converter 8, outdoor fan 9, cross valve 10, compressor 11, capillary 15, triple valve 16 and two-port valve 17 as expansion mechanism.As expansion mechanism, also can use expansion valve to replace capillary 15.
Indoor fan 4 is supplied with room air to indoor heat converter 3.In indoor heat converter 3, the room air that indoor fan 4 is supplied with and cold-producing medium carry out heat exchange.Outdoor fan 9 is to outdoor heat converter 8 supply chamber outer air.In outdoor heat converter 8, the outdoor air that outdoor fan 9 is supplied with and cold-producing medium carry out heat exchange.The flow direction of cold-producing medium while running with defrosting when cross valve 10 switches warming operation.Compressor 11 compressed refrigerants.Capillary 15 reduces the pressure of cold-producing medium.Triple valve 16 and two-port valve 17 for injecting cold-producing medium in the time that indoor set 7 and off-premises station 14 are installed in pipe arrangement.
The flow direction of the cold-producing medium when arrow of Fig. 1 shows warming operation.The refrigerant gas that outdoor heat converter 8 produces is supplied to compressor 11 by cross valve 10.Warm refrigerant gas after being compressed by compressor 11 transfers heat to room air and liquefies in indoor heat converter 3.Like this, room air is heated.The refrigerant liquid producing in indoor heat converter 3 by capillary 15 decompression after, be supplied to outdoor heat converter 8, and utilize the heat of outdoor heat converter 8 absorption chamber outer air and vaporize.
Fig. 2 is the figure of the refrigerant flow direction while defrosting running for the refrigerant lines figure of key diagram 1.With reference to Fig. 2, in the time that outdoor heat converter 8 is attached with frost, the heat exchanger effectiveness of outdoor heat converter 8 reduces.Therefore, for example,, when the temperature of outdoor heat converter 8 is below the setting of corresponding external air temperature, judge outdoor heat converter 8 frostings the running that defrosts.Fig. 9 describes the judgment standard of frosting in detail.
The flow direction of the cold-producing medium when arrow of Fig. 2 shows defrosting running.Stop drive chamber's internal fan 4 and outdoor fan 9.The refrigerant gas producing in indoor heat converter 3 is supplied to compressor 11 by cross valve 10.The warm refrigerant gas being compressed by compressor 11, transfers heat to outdoor heat converter 8 and liquefies.Like this, outdoor heat converter 8 is heated and defrosts.The refrigerant liquid producing in outdoor heat converter 8 is supplied to indoor heat converter 3 after by capillary 15 decompression, and utilizes indoor heat converter 3 to absorb the heat of room air and vaporize.
Fig. 3 is the outside drawing of indoor set 7.
Fig. 4 is the sectional drawing of indoor set 7 internal structures of simple presentation graphs 3.Fig. 4 is the sectional drawing from the indoor set 7 of the Y direction observation of Fig. 3.
In Fig. 4, except indoor heat converter 3 shown in Fig. 1, Fig. 2 and indoor fan 4, indoor set 7 also comprises temperature sensor 1,2, shutter board 5 and shutter board motor 6.Temperature sensor 1 (the second temperature sensor) detects room temperature.Temperature sensor 2 detects the temperature of indoor heat converter 3.Shutter board 5 is arranged on the wind direction guiding elements on the blow-off outlet of indoor set 7.Shutter board motor is the motor for driving shutter board 5 to rotate.Multiple shutter boards are driven into towards equidirectional.
Fig. 5 is the outside drawing of off-premises station 14.
Fig. 6 is the figure of off-premises station 14 internal structures of simple presentation graphs 5.In Fig. 6, except outdoor heat converter 8 shown in Fig. 1, Fig. 2, outdoor fan 9, cross valve 10 and compressor 11, off-premises station 14 also comprises temperature sensor 12,13.Temperature sensor 12 (the first temperature sensor) detects external air temperature.The temperature of temperature sensor 13 (three-temperature sensor) sensing chamber's outer heat-exchanger 8.
Fig. 7 is the functional block diagram of air conditioner 30.In Fig. 7, except Fig. 1, Fig. 2, Fig. 4 and Fig. 6 shown device, air conditioner 30 also comprises operating portion 31 and control part 32.Operating portion 31 comprises power switch, temperature adjusting key, air quantity adjusting key and timer etc.Control part 32 is the computers that are assembled in indoor set 7.The testing results of the user instructions such as the setting value at room temperature of inputting based on operating portion 31 and temperature sensor 1,2,12,13 etc., control part 32 carries out rotating speed control, the switching of cross valve 10 and the rotating speed control of fan 4,9 etc. of compressor 11.
In the air conditioner 30 of embodiment 1, use the interim rotating speed of controlling compressor 11 of FD value.More than FD value is set as 8 gears.For example, when maximum (top) speed is made as to FD=10, minimum speed is set as FD=1, be FD=0 while stopping, and rated speed is set as to FD=6.
In the time of warming operation, control part 32 carries out FEEDBACK CONTROL to the rotating speed of compressor 11, and the setting value at room temperature that user inputs is equated with room temperature.Because external air temperature is lower, to flow to outdoor heat (thermic load) larger from indoor, so the FD value under stable state uprises.But, in the heat insulation house of the universal height of cold district, even if external air temperature is-8 ℃, sometimes also turn round with the minimum speed of FD=1.
Fig. 8 is the flow chart of the action of the control part 32 of presentation graphs 7.Fig. 8 shows and outdoor heat converter 8 frostings in warming operation, detected and switch to defrosting running, again return to subsequently the step of common warming operation.
Just starting in the step S1 of warming operation, start until through stipulated time (defrosting binding hours), even outdoor heat converter 8 frostings, control part 32 does not carry out to the switching of defrosting running yet from warming operation.To carry out described step S1 be in order to guarantee until the stable time of the operating condition of air conditioner 30, and room temperature rises to the time to a certain degree.Described defrosting binding hours is set in 20～40 minutes conventionally.
After defrosting binding hours, the temperature (step S3) of the outdoor heat converter 8 that the external air temperature (step S2) detecting based on temperature sensor 12 and temperature sensor 13 detect, control part 32 judges whether frosting (step S4) of outdoor heat converter 8.The following describes the determination methods of frosting.
Fig. 9 is the figure of the determination methods for outdoor heat converter 8 frostings are described.The transverse axis of Fig. 9 represents external air temperature, and the longitudinal axis represents the temperature of outdoor heat converter 8.
Temperature based on external air temperature and outdoor heat converter 8 judges whether frosting.While thering is no frosting completely on the fin of outdoor heat converter 8, outdoor heat converter 8 is heated by extraneous air.So as shown in the solid line 35 of Fig. 9, temperature and the external air temperature of outdoor heat converter 8 are proportional.And if frosting on outdoor heat converter 8, because extraneous air can not pass through, so as shown in the dotted line 36 of Fig. 9, the temperature of outdoor heat converter 8 declines.Along with the development of frosting, the temperature continuous decrease of outdoor heat converter 8, finally arrives the region (point 39 in figure) of datum line below 38.
Utilize this phenomenon, control part 32 judges frosting state.Particularly, the temperature of outdoor heat converter 8 is according to external air temperature and the state continuance of the datum line that default defrosting starts state below fiducial temperature, the i.e. double dot dash line of Fig. 9 below 38 about 3 minutes time, control part 32 judges the complete frosting of outdoor heat converter 8, and operation mode is switched to defrosting running.Datum line 38 according to the machine of air conditioner 30, determine by actual tests by difference.In order more accurately to judge frosting, preferably use the rotating speed of compressor 11 to revise.
Referring again to Fig. 8, utilize control part 32 (in step S4, being "Yes") after frosting to be detected, enter step S5.Whether step subsequently exceedes a reference value (for example-15 ℃) of regulation and difference according to the external air temperature of measuring in the step S2 entering before step S5.
(i) situation (in step S5 be "No") of external air temperature below a reference value (15 ℃)
Even if external air temperature is in the time carrying out warming operation below for-15 ℃, in the heat insulation house of height ever-increasing today, the rotating speed of compressor 11 does not reach maximum (top) speed mostly yet.For example, establish FD value and be to the maximum at 10 o'clock, sometimes the degree room temperature of FD=5 just equal setting value and in stable state.
Control part 32 starts defrosting running (step S10) detecting after frosting.Particularly, in order to switch cross valve 10, control part 32 temporarily stops compressor 11.Control part 32 is sending after switching command cross valve 10, again starts compressor 11.Now, in order to finish as early as possible defrosting, for example, be maximum (top) speed (FD=10) by the speed setting of compressor 11.
After compressor 11 starts, cross valve 10 is accepted the assisting of the pressure that spues of compressor 11 and is switched.Because the rotating speed of compressor 11 is maximum (top) speed, so even in the time that refrigerant temperature is low, also can guarantee that cross valve 10 switches required enough refrigerant pressures.Can confirm by the temperature rise of the temperature decline of indoor heat converter 3 and outdoor heat converter 8 switching of cross valve 10.
In the time of defrosting running, control part 32 stops indoor fan 4 and outdoor fan 9.This is for not to indoor blowing cold air, and, be also not allow extraneous air seize the heat of the warm refrigerant gas of supplying with to outdoor heat converter 8 in order to defrost.
After defrosting running starts, utilize the temperature T hex1 (step S11) of temperature sensor 13 sensing chamber's outer heat-exchangers 8, control part 32 judges whether the temperature T hex1 detecting finishes more than fiducial temperature (step S12) in defrosting.Theoretically, if the temperature of outdoor heat converter 8 exceedes 0 ℃, frost is removed, but in order to be effective, defrosting finished to fiducial temperature and be set in 10 ℃ of left and right.
When the temperature T hex1 of outdoor heat converter 8 finishes fiducial temperature (10 ℃) when above (being "Yes" in step S12) in defrosting, control part 32 starts warming operation (step S13) again.Particularly, in order to switch cross valve 10, control part 32 temporarily stops compressor 11.Control part 32 is sending after switching command cross valve 10, again starts compressor 11.Now, external air temperature is below a reference value (15 ℃) time, and the speed setting of compressor 11 is maximum (top) speed (FD=10).In addition, suppose the defrosting running peripheral air themperature of the longest about 15 minutes substantially constant.Also the in the situation that of detecting external air temperature by temperature sensor 12 in outdoor fan 9 stopped processes, also can in step S13, again detect external air temperature, and the rotating speed of compressor 11 when setting warming operation and start based on the external air temperature that detects.
After compressor 11 starts, cross valve 10 is accepted the assisting of the pressure that spues of compressor 11 and is switched.Because the rotating speed of compressor 11 is maximum (top) speed, so even when refrigerant temperature is low, also can guarantee that cross valve 10 switches required enough refrigerant pressures.
After utilizing the temperature of indoor heat converter 3 and outdoor heat converter 8 to confirm that cross valve 10 switched, control part 32 turns round indoor fan 4 and outdoor fan 9.Can decline to confirm by the temperature of the temperature rise of indoor heat converter 3 and outdoor heat converter 8 switching of cross valve 10.
After warming operation starts again, detect room temperature (step S14) by temperature sensor 1, control part 32 judges whether the room temperature detecting reaches the prescribed limit (step S15) corresponding with the setting value at room temperature of user's input.In the illustration of Fig. 8, whether the room temperature that detects of judgement is more than setting value.
When room temperature is in the time that setting value is above (being "Yes" in step S15), operation mode is reverted to common feedback running (step S16) by control part 32.Particularly, control part 32 by the speed setting of compressor 11 is, than be about to start before defrosting running warming operation time rotating speed (FD=5) only exceed the rotating speed (FD=6) of setting (+1).Subsequently, control part 32 carries out FEEDBACK CONTROL to the rotating speed of compressor 11, so that the room temperature detecting by temperature sensor 1 equates with the setting value at room temperature of user's input.
Below, the later step of repeating step S1.During for warming operation after defrosting running of the operating condition that makes air conditioner 30, also keep stable, during stipulated time that just starts warming operation (defrosting binding hours), restriction is to defrosting running switching (step S1).
(ii) external air temperature exceedes the situation (being "Yes" in step S5) of a reference value (15 ℃)
For example, in the air conditioner 30 that high heat insulation house arranges, in the time that external air temperature is 2 ℃ of left and right, carry out warming operation take the rotating speed of compressor as the mode of minimum setting speed (FD=1).
Control part 32 starts defrosting running (step S6) after frosting being detected.Particularly, in order to switch cross valve 10, control part 32 temporarily stops compressor 11.Control part 32 is sending after switching command cross valve 10, again starts compressor 11.Now, the rotating speed of compressor is set equal to or a little more than rated speed (FD=6).In the time that external air temperature is high, cross valve 10 is accepted easily to switch after the pressure that spues of compressor 11.In defrosting running, control part 32 stops indoor fan 4 and outdoor fan 9.
After defrosting running starts, by the temperature T hex1 (step S7) of temperature sensor 13 sensing chamber's outer heat-exchangers 8, control part 32 judges whether the temperature T hex1 detecting finishes more than fiducial temperature (10 ℃) (step S8) in defrosting.
The temperature T hex1 of outdoor heat converter 8 is in the time that defrosting end fiducial temperature (10 ℃) is above (being "Yes" in step S8), and control part 32 starts warming operation (step S9) again.Particularly, in order to switch cross valve 10, control part 32 temporarily stops compressor 11.Control part 32 is sending after switching command cross valve 10, again starts compressor 11.
Now, in the time that external air temperature exceedes a reference value (15 ℃), be not maximum (top) speed by the speed setting of compressor 11.Under the high state of external air temperature, if the rotating speed of compressor 11 is brought up to maximum (top) speed, room temperature can sharply rise.Therefore, while recovering feedback running, the overshoot (overshoot) of room temperature increases, and need expend the plenty of time and room temperature recovery is stable.
So the rotating speed of compressor 11 is set to, than the rotating speed (FD=4～5) that is about to the large setting (+3～4) of rotating speed (FD=1) that starts defrosting running warming operation before.Like this, can stablize control room temperature and it can sharply not changed.Because external air temperature is high, so even if the rotating speed of compressor 11 is low, also can guarantee that cross valve 10 switches required enough refrigerant pressures.
In the later step of step S14 subsequently, identical with the situation of external air temperature below a reference value (15 ℃), so no longer repeat specification.
According to the air conditioner of above-mentioned embodiment 1 30, in the time that external air temperature is below a reference value, when defrosting running finishes rear beginning warming operation, the rotating speed of compressor 11 is set to maximum (top) speed.So, can avoid the situation that causes cross valve 10 to switch because of the insufficient pressure that spues of compressor 11.Compared with situation with external air temperature below a reference value, when external air temperature is during higher than a reference value, owing to set the rotating speed of compressor compared with lowland after, start warming operation, so can suppress the sharply rising of room temperature.Its result, can stably carry out room temperature control by feedback running subsequently.
(embodiment 2)
In embodiment 1, in step S8, the S12 of Fig. 8, as the temperature T hex1 of outdoor heat converter 8 (first defrosting termination condition) in the time that defrosting end fiducial temperature (10 ℃) is above, finish defrosting running.But in the time that external air temperature is below-20 ℃, even if defrost running, the temperature of outdoor heat converter 8 rises hardly.Therefore,, if continue defrosting running until the frost of outdoor heat converter 8 is removed completely, room temperature will be too low.
So, in embodiment 2, while exceeding higher limit (the longest defrosting time) duration of runs when defrosting, also can finish defrosting running (the second defrosting termination condition).The longest defrosting time was set as about 15 minutes.In addition, because indoor fan 4 in defrosting running stops, so can not accurately detect room temperature by temperature sensor 1.Therefore, not according to room temperature but control according to defrosting time.
When finish defrosting running with the second defrosting termination condition, before finishing completely, the defrosting of outdoor heat converter 8 just again starts warming operation.So, need to control especially, after piling up with the frost that prevents from not removing completely, make off-premises station 14 in the state that freezes.Below be specifically described.
Figure 10 is the flow chart that represents the action of the control part 32 of embodiment of the present invention 2.The action step of control part 32 of Figure 10 and the difference of the action step of Fig. 8 are, comprise step S12A between step S11, S12.Step S12A is the second defrosting termination condition.And in the situation that the second defrosting termination condition is set up (being "Yes" in step S12A), the action step of the control part 32 of Figure 10 comprises step S20～S27.Because other action step of Figure 10 are identical with the situation of Fig. 8, give identical Reference numeral to identical or corresponding step, and no longer repeat specification.
In step S12A, control part 32 judges after defrosting running starts whether passed through the longest defrosting time (for example 15 minutes).Not through the longest defrosting time in the situation that (being "No" in step S12A), enter step S12, control part 32 judges whether the temperature T hex1 of outdoor heat converter 8 is defrosting more than end fiducial temperature (10 ℃),, judge whether the first defrosting termination condition is set up.
In the time having passed through the longest defrosting time (being "Yes" in step S12A), control part 32 forces to finish also again to start warming operation (step S20) by defrosting running.Particularly, control part 32 temporarily stops compressor 11, and cross valve 10 is being sent after switching command, again starts compressor 11.Now, because external air temperature is below a reference value (15 ℃), so the rotating speed of compressor 11 is set to maximum (top) speed (FD=10).After compressor 11 starts, cross valve 10 is accepted the assisting of the pressure that spues of compressor 11 and is switched.After the temperature of utilizing indoor heat converter 3 and outdoor heat converter 8 confirms that cross valve 10 has switched, control part 32 turns round indoor fan 4 and outdoor fan 9.
After warming operation starts again, detect room temperature (step S21) by temperature sensor 1, control part 32 confirms whether the room temperature detecting reaches the prescribed limit (step S22) corresponding with the setting value at room temperature of user's input.In the illustration of Figure 10, confirm that the room temperature that detects is whether more than setting value at room temperature.
When room temperature is in the time that setting value is above (being "Yes" in step S22), operation mode is reverted to feedback running (step S23) by control part 32.Particularly, control part 32 by the speed setting of compressor 11 is, than be about to start before defrosting running warming operation time rotating speed only exceed the rotating speed of setting (+1).Subsequently, control part 32 carries out FEEDBACK CONTROL to the rotating speed of compressor 11, so that utilize the room temperature that temperature sensor 1 detects to equate with the setting value at room temperature of user's input.
But the in the situation that of step S23, the higher limit of the rotating speed of compressor 11 is restricted to lower than maximum (top) speed.For example, be FD=9 even if defrosting running is about to the rotating speed of beginning compressor 11 before, the rotating speed while starting feedback running can not rise to maximum (top) speed (FD=10), but is restricted to the value (FD=9) that is less than maximum (top) speed.Like this, can reduce the speed of frosting.
As mentioned above, for keeping the operating condition of air conditioner 30 stable, within the incipient stipulated time of warming operation (defrosting binding hours), do not switch to defrosting running.In step S24, control part 32 is set as described defrosting binding hours to be less than the defrosting binding hours of normal conditions.For example, if common defrosting binding hours is about 30 minutes, in step S24, foreshorten to about 20 minutes.Like this, earlier judge whether frosting of outdoor heat converter 8 than normal conditions, running defrosts in the situation that frosting is also not serious.
And, also can set for highlyer than normal conditions by defrosting illustrated in fig. 9 being started to fiducial temperature, under the frosting degree that is less than normal conditions, start defrosting running.Utilize above step, can develop and cause off-premises station 14 in the state that freezes by preventing frosting.
Subsequently, the temperature (step S26) of the outdoor heat converter 8 that the external air temperature (step S25) detecting based on temperature sensor 12 and temperature sensor 13 detect, control part 32 judges whether frosting (step S27) of outdoor heat converter 8.In the time frosting being detected, return to step S10, control part 32 starts defrosting running.Be through with defrosting in the longest defrosting time time (being "Yes" in step S12), control part 32 carries out step S13～S16 illustrated in fig. 8, returns to common feedback running.
(embodiment 3)
Because the rotating speed of outdoor fan 9 is larger, the heat using as sensible heat is more, so outdoor heat converter 8 is more difficult for frosting., due to outdoor fan 9 be arranged on outdoor, so become noise source when rotating speed is excessive.Therefore, outdoor fan 9 is conventionally with the rotation speed operation lower than maximum (top) speed.
And in the time that outdoor heat converter 8 starts frosting, owing to being covered by frost between fin, so even if increase the rotating speed of outdoor fan 9, noise also can increase hardly.Therefore in embodiment 3, the not state of frosting, the i.e. state of beginning frosting completely of control part 32 sensing chamber's outer heat-exchangers 8.And in the time of outdoor heat converter 8 beginning frosting, control part 32 makes the common rotating speed of the rotating ratio of outdoor fan 9 100～200rpm left and right that raises.Like this, because the heat using as sensible heat increases, thus be difficult for frosting, and also improved the heat exchanger effectiveness of outdoor heat converter 8.Owing to having started frosting, so make the noise of outdoor fan 9 also little than frostless state because of white existence.
The detection of can the temperature based on 12,13 pairs of external air temperatures of temperature sensor and outdoor heat converter 8 carrying out, judges the state that starts frosting on outdoor heat converter 8.Particularly, as shown in Figure 9, when the temperature of outdoor heat converter 8 starts fiducial temperature (double dot dash line 38 of Fig. 9) higher than aforesaid defrosting and according to external air temperature and below default frosting fiducial temperature (chain-dotted line 37 of Fig. 9) time, control part 32 increases the rotating speed of outdoor fan 9.The difference that frosting fiducial temperature and defrosting start fiducial temperature is set as 1 ℃ of left and right.
Figure 11 is the flow chart that represents the action of the control part 32 of embodiment of the present invention 3.The action step of control part 32 of Figure 11 and the difference of the action step of Figure 10 be, step of replacing S4 but the step S4A that comprises the frosting state that judges outdoor heat converter 8.And the action step of Figure 11 also comprises step S30, be judged as outdoor heat converter 8 part frosting in step S4A time, carry out this step S30.Because other action step of Figure 11 are identical with the situation of Figure 10, give identical Reference numeral to identical or corresponding step, and no longer repeat specification.
In step S4A, the temperature of the outdoor heat converter 8 detecting in the external air temperature based on detecting in step S2 and step S3, control part 32 judges the frosting state of outdoor heat converter 8.Particularly, in the time that the temperature of outdoor heat converter 8 exceedes the frosting fiducial temperature (chain-dotted line 37 of Fig. 9) of corresponding external air temperature, control part 32 judgements are normal and make processing return to step S2.In the time that the temperature of outdoor heat converter 8 is below the defrosting of corresponding external air temperature starts fiducial temperature (double dot dash line 38 of Fig. 9), control part 32 performs step the later processing of S5, and starts defrosting running.Below the temperature of the outdoor heat converter 8 frosting fiducial temperature at corresponding external air temperature and when exceeding defrosting and starting fiducial temperature, control part 32 makes to process and advances to step S30.
In step S30, control part 32 makes the high 100～200rpm of the common rotating speed of the rotating ratio of outdoor fan 9 left and right.
The feature of above-mentioned disclosed embodiment is all to illustrate, and is not intended to limit the present invention.Protection scope of the present invention represents by claim and is not limited to above-mentioned explanation, and should comprise the content that is equal to claim and all changes within the scope of claim.
Claims (7)
1. an air conditioner (30), is characterized in that comprising:
The compressor (11) of variable speed;
Outdoor heat converter (8);
Indoor heat converter (3);
Cross valve (10), switch the flow direction of the cold-producing medium of described compressor (11) compression, so that indoor heat converter (3) described in the refrigerant flow direction of compressor (11) compression described in when warming operation, and outdoor heat converter (8) described in the refrigerant flow direction of compressor (11) compression described in the time of defrosting running;
The first temperature sensor (12), detects external air temperature; And
Control part (32), controls described compressor (11) and described cross valve (10),
In the time being switched to warming operation from defrosting running, external air temperature exceedes in the situation of external air temperature a reference value of regulation, described control part (32) sends switching command to described cross valve (10), and the rotating speed that makes the described compressor of described compressor (11) when being about to start the warming operation before defrosting running adds the rotating speed entry into service of the first increment of regulation
In the time being switched to warming operation from defrosting running, external air temperature is below described external air temperature a reference value in the situation that, described control part (32) sends switching command to described cross valve (10), and makes described compressor (11) to exceed enough regulation rotating speed entrys into service that rotating speed in the situation of described external air temperature a reference value is high and can switch described cross valve (10) than external air temperature.
2. air conditioner according to claim 1 (30), is characterized in that, described regulation rotating speed is the maximum (top) speed in the rotating speed that can set of described compressor (11).
3. air conditioner according to claim 1 and 2 (30), is characterized in that,
Described air conditioner (30) also comprises the second temperature sensor (1), and described the second temperature sensor (1) detects room temperature,
External air temperature exceedes in the situation of described external air temperature a reference value, when the room temperature detecting after end defrosting is turned round and started warming operation arrives the scope corresponding with setting value at room temperature, the rotating speed of the described compressor (11) when the rotating speed of described compressor (11) is changed to the warming operation that being about to start before defrosting running by described control part (32) adds the rotating speed of the second increment of the regulation that is less than described the first increment, and the rotating speed to described compressor (11) carries out FEEDBACK CONTROL, so that the room temperature detecting remains described setting value at room temperature
External air temperature is below described external air temperature a reference value in the situation that, when the room temperature detecting after end defrosting is turned round and started warming operation arrives the scope corresponding with setting value at room temperature, the rotating speed of the described compressor (11) when the rotating speed of described compressor (11) is changed to the warming operation that being about to start before defrosting running by described control part adds the rotating speed of the 3rd increment of regulation, and the rotating speed to described compressor (11) carries out FEEDBACK CONTROL, so that the room temperature detecting remains described setting value at room temperature.
4. air conditioner according to claim 3 (30), is characterized in that,
Described air conditioner (30) also comprises three-temperature sensor (13), and described three-temperature sensor (13) detects the temperature of described outdoor heat converter (8),
In the time of first condition or second condition establishment, described control part (32) finishes defrosting running, the temperature that described first condition refers to the described outdoor heat converter (8) detecting is more than the defrosting of regulation finishes fiducial temperature, and described second condition refers to and starts after defrosting running through the longest defrosting time of regulation.
5. air conditioner according to claim 4 (30), it is characterized in that, in the time finishing defrosting running due to described second condition establishment, the higher limit of the rotating speed that described control part (32) changes when the described room temperature that detects is arrived to the scope corresponding with described setting value at room temperature and the rotating speed when rotating speed of described compressor (11) is carried out to FEEDBACK CONTROL, is restricted to lower than the maximum (top) speed that can set.
6. air conditioner according to claim 4 (30), is characterized in that,
After starting warming operation and having passed through the defrosting binding hours of regulation, and the temperature of the described outdoor heat converter (8) detecting is according to external air temperature and default defrosting while starting below fiducial temperature, described control part (32) starts defrosting running
Finish when running defrosting when meeting described second condition, finish defrosting running during with meeting described first condition compared with, the described defrosting binding hours of the condition of described control part (32) when start defrosting running as next time is set for shorter.
7. air conditioner according to claim 6 (30), is characterized in that,
Described air conditioner (30) also comprises the outdoor fan (9) of variable speed, and described outdoor fan (9) is blown to described outdoor heat converter (8),
When the temperature of the described outdoor heat converter (8) detecting starts fiducial temperature higher than described defrosting and according to external air temperature and below default frosting fiducial temperature time, with the temperature of the described outdoor heat converter (8) detecting during higher than described frosting fiducial temperature compared with, described control part (32) improves the rotating speed of described outdoor fan (9).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-170959 | 2009-07-22 | ||
| JP2009170959A JP4836212B2 (en) | 2009-07-22 | 2009-07-22 | Air conditioner |
| PCT/JP2010/059183 WO2011010506A1 (en) | 2009-07-22 | 2010-05-31 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102472539A CN102472539A (en) | 2012-05-23 |
| CN102472539B true CN102472539B (en) | 2014-07-09 |
Family
ID=43498982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080031313.3A Expired - Fee Related CN102472539B (en) | 2009-07-22 | 2010-05-31 | Air conditioner |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2458306A4 (en) |
| JP (1) | JP4836212B2 (en) |
| CN (1) | CN102472539B (en) |
| WO (1) | WO2011010506A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6113503B2 (en) * | 2012-12-28 | 2017-04-12 | ダイキン工業株式会社 | Heat pump equipment |
| CN105180294B (en) * | 2014-06-06 | 2018-07-13 | 广东美的集团芜湖制冷设备有限公司 | Mobile air-conditioner and its defrosting control method |
| CN105202689B (en) * | 2014-06-27 | 2018-04-17 | 青岛海尔空调器有限总公司 | The method and system of compressor target frequency control accuracy after raising air-conditioner defrosting |
| CN104132488A (en) * | 2014-07-24 | 2014-11-05 | 康特能源科技(苏州)有限公司 | Air source heat pump defrosting device and method |
| JP6354574B2 (en) * | 2014-12-24 | 2018-07-11 | 株式会社富士通ゼネラル | Heat pump type hot water heater |
| EP3260790B1 (en) * | 2015-02-18 | 2020-03-25 | Mitsubishi Electric Corporation | Air conditioning device |
| CN105318618B (en) * | 2015-09-23 | 2017-12-08 | 广东美的暖通设备有限公司 | Air-cooled heat pump cold-hot water machine and its defrosting control method |
| JP6323431B2 (en) * | 2015-10-30 | 2018-05-16 | ダイキン工業株式会社 | Air conditioner |
| CN106369877A (en) * | 2016-11-30 | 2017-02-01 | 广东美的制冷设备有限公司 | Heat pump system and defrosting control method thereof |
| CN107166643A (en) * | 2017-05-17 | 2017-09-15 | 青岛海尔空调器有限总公司 | A kind of control method and device of air-conditioning |
| CN108413562A (en) * | 2018-02-05 | 2018-08-17 | 青岛海尔空调器有限总公司 | A kind of self-cleaning control method and device of air-conditioning |
| CN110671847B (en) * | 2018-07-02 | 2021-12-21 | 艾默生环境优化技术(苏州)有限公司 | Variable-speed condensing unit, capacity self-adaptive adjusting method, storage medium and controller |
| CN113811723A (en) * | 2019-05-20 | 2021-12-17 | 三菱电机株式会社 | Outdoor unit, air-conditioning apparatus, and operation control method for air-conditioning apparatus |
| CN111609665B (en) * | 2020-05-15 | 2021-12-07 | 珠海格力电器股份有限公司 | Defrosting control method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04174238A (en) * | 1990-11-06 | 1992-06-22 | Toshiba Corp | Air conditioner |
| JPH09236334A (en) * | 1996-02-29 | 1997-09-09 | Daikin Ind Ltd | Operation controller for air conditioner |
| JP2005300008A (en) * | 2004-04-12 | 2005-10-27 | Matsushita Electric Ind Co Ltd | Heat pump hot water supply device |
| CN1888671A (en) * | 2005-06-30 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Air conditioner defrosting operation controlling device and operating method thereof |
| JP4078036B2 (en) * | 2001-02-20 | 2008-04-23 | 東芝キヤリア株式会社 | Heat pump water heater |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58115235A (en) * | 1981-12-29 | 1983-07-08 | Sharp Corp | Control circuit of air conditioner |
| JPS59145455A (en) * | 1983-02-07 | 1984-08-20 | ダイキン工業株式会社 | Defroster |
| JPS6043965U (en) * | 1983-09-02 | 1985-03-28 | ダイキン工業株式会社 | air conditioner |
| JPS62237255A (en) * | 1986-04-09 | 1987-10-17 | 株式会社日立製作所 | Air conditioner |
| JPH03195877A (en) * | 1989-12-25 | 1991-08-27 | Toshiba Corp | Defrosting control method in heat pump air compressor |
| KR950000738B1 (en) * | 1991-12-27 | 1995-01-28 | 삼성전자 주식회사 | Method of controlling frost of invertor air conditioner |
| JP2008215734A (en) * | 2007-03-06 | 2008-09-18 | Hitachi Appliances Inc | Multiple air conditioner |
-
2009
- 2009-07-22 JP JP2009170959A patent/JP4836212B2/en not_active Expired - Fee Related
-
2010
- 2010-05-31 CN CN201080031313.3A patent/CN102472539B/en not_active Expired - Fee Related
- 2010-05-31 WO PCT/JP2010/059183 patent/WO2011010506A1/en active Application Filing
- 2010-05-31 EP EP10802127.0A patent/EP2458306A4/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04174238A (en) * | 1990-11-06 | 1992-06-22 | Toshiba Corp | Air conditioner |
| JPH09236334A (en) * | 1996-02-29 | 1997-09-09 | Daikin Ind Ltd | Operation controller for air conditioner |
| JP4078036B2 (en) * | 2001-02-20 | 2008-04-23 | 東芝キヤリア株式会社 | Heat pump water heater |
| JP2005300008A (en) * | 2004-04-12 | 2005-10-27 | Matsushita Electric Ind Co Ltd | Heat pump hot water supply device |
| CN1888671A (en) * | 2005-06-30 | 2007-01-03 | 乐金电子(天津)电器有限公司 | Air conditioner defrosting operation controlling device and operating method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4836212B2 (en) | 2011-12-14 |
| EP2458306A1 (en) | 2012-05-30 |
| EP2458306A4 (en) | 2015-08-05 |
| JP2011027286A (en) | 2011-02-10 |
| WO2011010506A1 (en) | 2011-01-27 |
| CN102472539A (en) | 2012-05-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102472539B (en) | Air conditioner | |
| CN111765606A (en) | Method for controlling low-temperature heating start of air conditioner, air conditioner and storage medium | |
| US10639965B2 (en) | Automatic control method used for defrosting a heat pump for a vehicle | |
| JP3598809B2 (en) | Refrigeration cycle device | |
| US20100070082A1 (en) | Methods and systems for controlling an air conditioning system operating in free cooling mode | |
| US20100036531A1 (en) | Methods and systems for controlling air conditioning systems having a cooling mode and a free-cooling mode | |
| CN105157168A (en) | Dehumidification control method for air conditioner, controller and air conditioner | |
| JP5053430B2 (en) | Air conditioner | |
| WO2005077015A3 (en) | Defrost mode for hvac heat pump systems | |
| CN108072214A (en) | Air-conditioning device and its control method | |
| CN106765779B (en) | A kind of defrosting control method of air conditioner and air conditioner | |
| JP2010506132A (en) | Method and apparatus for controlling stop operation of air conditioner | |
| CN101725533A (en) | Method for starting compressor of air conditioner at low temperature | |
| US11320186B2 (en) | Heat pump with defrost termination based upon system temperatures | |
| EP2589901A2 (en) | Refrigeration cycle apparatus and hot water generator | |
| US20190360725A1 (en) | Refrigeration apparatus | |
| CN103162384B (en) | The blower control method of operation of heat pump | |
| US6263686B1 (en) | Defrost control method and apparatus | |
| CN203908148U (en) | Air conditioning system | |
| CN113614463A (en) | Air conditioner | |
| JP4622988B2 (en) | Air conditioner | |
| JP4830399B2 (en) | Air conditioner | |
| JP5517891B2 (en) | Air conditioner | |
| JP6428221B2 (en) | Air conditioner | |
| JP4802602B2 (en) | Air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20180531 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |