CN101430127A - Air conditioner control method in indoor heating state - Google Patents
Air conditioner control method in indoor heating state Download PDFInfo
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- CN101430127A CN101430127A CNA2008103057966A CN200810305796A CN101430127A CN 101430127 A CN101430127 A CN 101430127A CN A2008103057966 A CNA2008103057966 A CN A2008103057966A CN 200810305796 A CN200810305796 A CN 200810305796A CN 101430127 A CN101430127 A CN 101430127A
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Abstract
The invention relates to an air conditioner control method, and provides the air conditioner control method by using a booster heater to shorten defrosting time and cold air prevention time. The air conditioner control method in an indoor heating state comprises the following steps: driving the booster heater during the cold air prevention of an air conditioner, and judging whether temperature of an indoor heat exchanger is higher than a first set temperature, if yes, driving an indoor fan; if not, keeping halted state of the indoor fan until the temperature of the indoor heat exchanger is higher than the first set temperature; and setting an indoor unit into a refrigeration cycle during the defrosting of the air conditioner, turning off the indoor fan, and driving the booster heater. The booster heater is arranged below the indoor heat exchanger. The method aims at the air conditioner containing the electric booster heater, and the electric booster heater is started during the air conditioner heating operation, the cold air prevention and the defrosting so as to shorten the cold air prevention time and the defrosting time, and extends the usage of the booster heater.
Description
Technical field
The present invention relates to a kind of air-conditioner control method, particularly air-conditioning heats the control method of preventing cold wind and defrosting in the circulation.
Background technology
Air-conditioner is divided into monoblock type and split type substantially.Integral type is identical with split type cardinal principle on function, and just monoblock type is installed in evaporimeter, compressor, condenser, blower fan in the cabinet; Split typely then be provided with indoor heat converter (evaporimeter or condenser) and indoor fan etc. being arranged in indoor indoor set, in off-premises station, be provided with outdoor heat converter (condenser or evaporimeter), compressor with outdoor and blower fan.At least one place in indoor set and off-premises station is provided with expansion gear, and the indoor set of separation is connected by coolant piping with off-premises station.
On the one hand, when air-conditioning when entering winter heating because the outdoor heat converter evaporating temperature is lower than zero centigrade, icing phenomenon will take place in the surface of above-mentioned outdoor heat converter.Icing phenomenon can reduce the efficient of heat pump cycle, so will remove the defrost operation of outdoor heat converter frost.Outdoor environment temperature is low more, and it is short more to heat cycle period, and defrosting time is long more.
On the other hand, when air-conditioning heats circulation time entering, because heat exchanger temperature needs certain hour in the heating clamber, therefore, it is static to reach the preceding air conditioning chamber of setting value inner blower at indoor heat converter, prevents that cold wind from sending into indoor.Outdoor temperature is low more, and the time of anti-cold wind is long more.
During anti-cold wind and during the Defrost operation, air-conditioner can not be to indoor transfer heat, and the temperature in room can not be promoted rapidly.
In the prior art, for remedying heat pump air conditioner low-temperature heating scarce capacity, be provided with auxiliary heater at indoor set, the auxiliary heater that is installed on indoor set is used for when outdoor environment temperature is low, the auxiliary hot-air that adds in heating circulation.In the patent No. is in the patent of CN 1991255A, disclose and adopted in the heat exchanger upstream and/or downstream (air intake place and/or wind outlet) is provided with auxiliary heater, in the heating and defrosting process, open blower fan and auxiliary heater, reach in the defrosting time indoor temperature and be unlikely to reduce, and the effect that room temperature is improved rapidly.But, in this scheme, there is open defect, when air-conditioner defrosts, in the frost melting process with outdoor heat converter, the inner refrigerant of indoor heat converter is in the low-temperature evaporation state, if open indoor blower at this moment, then heater need be heated to indoor heat converter suitable temperature, and air-flow also is heated to suitable temperature, so that allow air-supply can not allow the user feel extremely uncomfortable, finish above-mentioned target, need the power of auxiliary heater very big, otherwise the low-temperature airflow of leaving is delivered to the room, the user is felt cold and extremely uncomfortable.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of auxiliary heater that utilizes to shorten defrosting time and anti-cold wind time air-conditioner control method.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be the air-conditioner control method under the indoor heating state:
During the anti-cold wind of air-conditioner, drive auxiliary heater, judge whether the temperature of indoor heat converter is higher than first design temperature, in this way, drive chamber's inner blower; If not, the halted state of holding chamber inner blower is higher than first design temperature until the temperature of indoor heat converter;
During the air-conditioner defrosting, indoor set is set to kind of refrigeration cycle, stops indoor fan, drives auxiliary heater simultaneously;
Described auxiliary heater places the indoor heat converter below.
The present invention places the indoor heat converter below with auxiliary heater, principle according to the thermal current rising, do not opening blower fan during preventing cold wind and during the defrosting, thermal current rises to come the interior heat exchanger of auxiliary heating chamber, shortening defrosting time and anti-cold wind time when utilizing auxiliary heater to open.
Further, in order to save electric energy, during the air-conditioner defrosting, judge whether the temperature of indoor heat converter is higher than second design temperature, and in this way, indoor set is set to kind of refrigeration cycle, stops indoor fan earlier; As not, indoor set is set to kind of refrigeration cycle, stops indoor fan, drives auxiliary heater simultaneously.By the temperature of indoor heat converter, thereby judge outdoor environment temperature, when outdoor environment temperature when not being very low, defrosting time is short, does not just open auxiliary heater this moment.
The invention has the beneficial effects as follows, the present invention is directed to the air-conditioner that includes electrical auxiliary heater,, shorten anti-cold wind time and defrosting time starting electrical auxiliary heater during the anti-cold wind of air conditioner heat-production operation and during defrosting, the usage of developing auxiliary heater satisfies the demand that the user heats fast.The evidence of a split wall-hanging air conditioner of the application of the invention: the anti-cold wind time shortens 40%, and the defrosting cycle of worst cold case (3 ℃ of 5 ℃/wet-bulb temperature of indoor dry-bulb temperature, 1 ℃ of 2 ℃/wet-bulb temperature of outside dry-bulb temperature) shortens above 30%.
Description of drawings
Fig. 1 is the part broken away view of indoor apparatus of air conditioner among the present invention;
Fig. 2 is the flow chart that heats circulation controlling means of air-conditioner among the embodiment;
Fig. 3 is the auxiliary heater of air-conditioner among the present invention and the control sequential chart of indoor fan;
Fig. 4 is the auxiliary heater of air-conditioner among the present invention and the control sequential chart of indoor fan.
The specific embodiment
Air-conditioning includes indoor set and off-premises station.Above-mentioned off-premises station includes structures such as compressor, outdoor heat converter, expansion gear (capillary and assisted capillary), outdoor fan, cross valve; The structures such as auxiliary heater that indoor set then includes indoor heat converter, indoor fan and places the indoor heat converter below.Indoor set also includes the sensor that is used to detect indoor temperature and indoor coil pipe.When air-conditioning carries out kind of refrigeration cycle, to pass through the cross valve water conservancy diversion by the refrigerant of compression in the compressor in outdoor heat converter, outdoor heat converter will carry out condensation to refrigerant, expansion gear (capillary) expands the refrigerant of outdoor heat converter condensation, and the refrigerant evaporation that indoor heat converter then expands expansion gear is to reduce the indoor temperature.Air-conditioning heats circulation time, the refrigerant of compression passes through the cross valve water conservancy diversion in indoor heat converter in the compressor, indoor heat converter carries out condensation, while and indoor air flow heat-shift with refrigerant, thermal current raises room temperature, condensed refrigerant arrives outdoor heat converter after expanding by expansion gear (capillary and assisted capillary), and above-mentioned outdoor heat converter then is used for carrying out between refrigerant and the outdoor air heat exchange.
As shown in Figure 1, the auxiliary heater 11 that places indoor heat converter 12 belows that is installed on indoor set is heating circulation time, is for general on outdoor environment temperature when low, the auxiliary hot-air that adds in heating circulation.The present invention is used to this auxiliary heater to heat anti-cold wind and low-temperature heating defrosting again, heats anti-cold wind time and low-temperature heating defrosting time with shortening.Indoor heat converter 12 tops are the air intake place of indoor heat converter 12, and the air intake of air-conditioner drives by indoor fan 13 and blows to indoor heat converter 12, by 12 pairs of processing through wind of indoor heat converter, air-conditioner blowing hot-air or cold wind.Auxiliary heater 11 is placed indoor heat converter 12 belows, during the anti-cold wind of air conditioner heat-production operation and during the defrosting, auxiliary heater 11 after the startup utilizes the principle of thermal current rising, thermal current is risen come heat exchanger in the auxiliary heating chamber, shortens defrosting time and anti-cold wind time.
Embodiment
The control flow that heats circulation of air-conditioning is as shown in Figure 2:
Air-conditioning is heating circulation time, and its control method is divided into following several stages: judge whether the temperature of user's setting is higher than the 1st comparison phase H10 of indoor temperature; When above-mentioned design temperature was higher than indoor temperature, air-conditioner began to heat, and started compressor and auxiliary heater, and indoor fan static (as shown in Figure 3) enters and heats anti-cold wind stage H20; When heating anti-cold wind operation, judge whether indoor coil (coil pipe is a kind of of heat exchanger) temperature is higher than the 2nd comparison phase H30 of 32 ℃ (first design temperatures); When above-mentioned indoor coil pipe was higher than 32 ℃, the inlet chamber inner blower drove stage H40; Afterwards, whether decision-making system needs the H50 that defrosts; Judgement judges immediately whether indoor coil pipe is lower than 30 ℃ (second design temperatures), and the Defrost operation that whether enters Defrost operation pattern 1 for confirmation is confirmed 1 stage H60 after needing defrosting; When above-mentioned indoor coil pipe is lower than 30 ℃, enter Defrost operation pattern one H70, air-conditioning is set at kind of refrigeration cycle, drive auxiliary heater simultaneously, stop indoor fan (as shown in Figure 4), outdoor heat converter is defrosted, after defrosting was finished, air-conditioning began to heat circulation, and indoor fan drives.
Auxiliary heater can cut out when indoor temperature reaches the user preset temperature, also can close when indoor heat converter reaches the 3rd predetermined temperature.
When the indoor temperature among above-mentioned the 1st comparison phase H10 was higher than user's design temperature, above-mentioned air-conditioning need not to heat circulation and stops the circulation that heats of above-mentioned air-conditioning.
Above-mentioned the 2nd comparison phase H30 is used to detect above-mentioned indoor coil pipe to judge whether to drive above-mentioned indoor fan when being lower than user's design temperature when indoor temperature.When the temperature of indoor coil is higher than 32 ℃, can be judged as the required proper temperature of indoor heating, heat anti-cold wind stage H20 and finish, and then the indoor fan that drives above-mentioned indoor fan drives stage H40; When the temperature of indoor coil is lower than 32 ℃, then be judged as the temperature that is not suitable for the indoor heating air-supply, heating anti-cold wind stage H20 continues, make under the state that above-mentioned indoor fan stops, make above-mentioned air-conditioning heat circulation, drive auxiliary heater simultaneously and, above-mentioned indoor heat converter is preheating to suitable temperature as feature.
After judgement reaches the defrosting condition H50 of system, judge immediately whether indoor coil pipe is lower than 30 ℃ of H60, if be lower than 30 ℃, then enters Defrost operation pattern one, and at this moment, air-conditioning is set at kind of refrigeration cycle, drives auxiliary heater simultaneously, stops indoor fan H70.When judging that indoor coil pipe is higher than 30 ℃ and be lower than 38 ℃ of (the 4th design temperature) H80, then enter Defrost operation pattern two H90, air-conditioning is set at kind of refrigeration cycle, stops indoor fan, and outdoor heat converter is defrosted.Wherein, 30 ℃ of above-mentioned judgement indoor coil pipe institute fixed temperatures are for when above-mentioned indoor heat converter temperature is lower than 30 ℃, and the affirmation outdoor environment temperature is lower than 7 ℃ experiment value.
Claims (5)
- [claim 1] air-conditioner control method under the indoor heating state is characterized in that:During the anti-cold wind of air-conditioner, drive auxiliary heater, judge whether the temperature of indoor heat converter is higher than first design temperature, in this way, drive chamber's inner blower; If not, the halted state of holding chamber inner blower is higher than first design temperature until the temperature of indoor heat converter;During the air-conditioner defrosting, indoor set is set to kind of refrigeration cycle, stops indoor fan, drives auxiliary heater simultaneously;Described auxiliary heater places the indoor heat converter below.
- [claim 2] be the air-conditioner control method under the indoor heating state according to claim 1, it is characterized in that: during the air-conditioner defrosting, judge whether the temperature of indoor heat converter is higher than second design temperature earlier, in this way, indoor set is set to kind of refrigeration cycle, stops indoor fan; As not, indoor set is set to kind of refrigeration cycle, stops indoor fan, drives auxiliary heater simultaneously.
- [claim 3] is characterized in that as the air-conditioner control method under the indoor heating state as described in the claim 2: described first design temperature is that 32 ℃, second design temperature are 30 ℃.
- As the air-conditioner control method under the indoor heating state as described in the claim 1,2 or 3, it is characterized in that: described auxiliary heater cuts out when indoor temperature reaches the user preset temperature [claim 4].
- As the air-conditioner control method under the indoor heating state as described in the claim 1,2 or 3, it is characterized in that: described auxiliary heater cuts out when indoor heat converter reaches the 3rd predetermined temperature [claim 5].
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