KR100257198B1 - Method for defrost of the air conditioner - Google Patents

Method for defrost of the air conditioner Download PDF

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Publication number
KR100257198B1
KR100257198B1 KR1019970058157A KR19970058157A KR100257198B1 KR 100257198 B1 KR100257198 B1 KR 100257198B1 KR 1019970058157 A KR1019970058157 A KR 1019970058157A KR 19970058157 A KR19970058157 A KR 19970058157A KR 100257198 B1 KR100257198 B1 KR 100257198B1
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South Korea
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temperature
electric heater
air conditioner
indoor
compressor
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KR1019970058157A
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Korean (ko)
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KR19990038438A (en
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서현호
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구자홍
엘지전자주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/01Heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/02Compressor control
    • F25B2600/026Compressor control by controlling unloaders
    • F25B2600/0261Compressor control by controlling unloaders external to the compressor

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

PURPOSE: A defrost method for air conditioner is provided to allow the indoor temperature to match to the temperature set by a user by performing a heating operation even during a defrost operation. CONSTITUTION: A defrost method comprises a step(S100) of setting the temperature for turning on/off the compressor and heater upon start of heating operation; a step(S200) of judging whether the outdoor pipe temperature is lower than T2 Deg.C during an initial operation after setting the temperature; a step(S300) of performing defrost operation if the outdoor pipe temperature is lower than T2 Deg.C; a step(S400) of judging whether the outdoor pipe temperature is lower than -T3 Deg.C, if the outdoor pipe temperature is higher than T2 Deg.C; a step(S500) of returning to the defrost operation if the outdoor pipe temperature is lower than -T3 Deg.c, and performing normal heating operation and judging whether the indoor temperature is lower than the preset temperature if the outdoor pipe temperature is higher than -T3 Deg.C; a step(S600) of simultaneously operating the fan and electric heater if the indoor temperature is lower than the preset temperature; a step(S700) of judging whether the indoor temperature is higher than the preset temperature and at the same time lower than (preset temperature+T1 Deg.C), if the indoor temperature is higher; a step(S800) of judging whether the compressor is turned off, if it is judged "yes" in the step(S700); a step(S900) of judging whether the indoor temperature is higher than preset temperature+T1 Deg.C, if it is judged "no" in the step(S700); and a step(S1000) of turning off the electric heater and turning on the fan and four-way valve, if it is judged "yes" in the step(S900).

Description

공기조화기의 제상방법Defrosting method of air conditioner

본 발명은 공기조화기에 관한 것으로, 특히 제상운전시 발생하는 실내온도 저하를 방지하는 공기조화기의 제상방법에 관한 것이다.The present invention relates to an air conditioner, and more particularly, to a defrosting method of an air conditioner for preventing a decrease in room temperature generated during a defrosting operation.

종래의 실내열교환기, 감압기, 사방변, 압축기, 실외열교환기, 송풍장치 및 전기히터를 구비한 공기조화기에 있어서, 정상난방 구간과 제상운전 구간을 비교하여 설명하면, 정상난방 운전구간일경우 실내온도와 사용자의 설정온도와의 차가 클때 전기히터와 팬이 동작하고, 그 차가 작을때는 압축기와 사방변 및 팬이 동작하여 일정하게 설정온도에 실내온도를 부합시킨다.In a conventional air conditioner equipped with an indoor heat exchanger, a pressure reducer, a four-way valve, a compressor, an outdoor heat exchanger, a blower, and an electric heater, the normal heating section and the defrosting operation section are compared and described. When the difference between the room temperature and the user's set temperature is large, the electric heater and the fan operate, and when the difference is small, the compressor, the four sides and the fan operate to match the room temperature with the set temperature constantly.

그리고, 제상운전 구간일경우 상기 정상난방 구간에서 압축기와 사방변 및 팬이 동작하여 난방서비스를 할때 실외 배관온도가 어느 일정온도 이하로 내려가면 실외측 열교환기에 서리가 맺혀 실외측 열교환기의 열교환이 적어지므로 결국 실내측의 난방능력이 저하되고, 이때 상기 전기히터를 일정시간 간격으로 온/오프 동작을 반복해 주므로써 실내측의 온도가 일정온도에 도달할때까지 계속동작한다.In the defrosting operation section, the compressor, the four-sided fan and the fan operate in the normal heating section, and when the outdoor pipe temperature falls below a certain temperature during the heating service, frost is formed on the outdoor heat exchanger. As a result, the heating capacity of the indoor side is lowered. At this time, the on / off operation of the electric heater is repeated at regular time intervals, thereby continuing to operate until the temperature of the indoor side reaches a predetermined temperature.

도 1 및 도 2는 종래 기술에 따른 공기조화기의 제상방법을 나타낸 플로우 차트이다.1 and 2 is a flow chart showing a defrosting method of an air conditioner according to the prior art.

종래기술에 따르면 도 1에 나타낸 바와 같이, 난방운전이 선택되면 실외배관온도를 측정하여 소정온도(T1℃) 이하인지 판단하고(S1), 이하이면 즉시 제상운전 구간으로 진입하여 압축기와 사방변은 정지시키고 전기히터와 팬은 정상운전을 실행하도록 제어한다(S2).According to the prior art, as shown in FIG. 1, when the heating operation is selected, the outdoor pipe temperature is measured to determine whether or not the predetermined temperature (T1 ° C.) or less (S1). Stop and control the electric heater and the fan to perform the normal operation (S2).

상기 실외배관 온도가 제 1소정온도(T1℃) 이상이면 정상난방 운전을 행하며, 이때 실외배관 온도가 제 2소정온도(T2℃) 이하인지 판단하고(S3), 이하이면 역시 제상운전 구간으로 진입한다.If the outdoor pipe temperature is equal to or greater than the first predetermined temperature (T1 ° C.), the normal heating operation is performed. do.

상기 실외배관 온도가 제 2소정온도(T2℃) 이상이면, 실내온도와 설정온도-T3℃를 비교하고(S4), 실내온도가 설정온도-T3℃ 이하이면 팬과 전기히터만을 동작시킨다(S5).When the outdoor piping temperature is equal to or greater than the second predetermined temperature (T2 ° C.), the indoor temperature and the set temperature-T3 ° C. are compared (S4). When the indoor temperature is less than the set temperature-T3 ° C., only the fan and the electric heater are operated (S5). ).

상기 실내온도가 설정온도-T3℃ 이상이면 실내온도가 설정온도-T3℃≤실내온도〈설정온도 구간에 있는지 판단한다(S6).If the indoor temperature is equal to or greater than the set temperature-T3 ° C., it is determined whether the indoor temperature is within the set temperature-T3 ° C.?

상기 실내온도가 구간에 포함되어 있으면 압축기와 사방변 및 팬을 동작시키고(S7), 이 구간을 벗어나면 실내온도가 설정온도 이상인지를 판단한다(S8).If the indoor temperature is included in the section, the compressor, the four sides and the fan is operated (S7), and if out of this section, it is determined whether the indoor temperature is above the set temperature (S8).

상기 실내온도가 설정온도 이상이면 팬만동작시키고 기타 부하는 모두 정지시킨다(S9).If the room temperature is above the set temperature, only the fan is operated and all other loads are stopped (S9).

상기 팬만 동작시키는 단계는 실내온도가 설정온도와 일치된 구간임을 뜻한다.Operating only the fan means that the indoor temperature is a section consistent with the set temperature.

종래 기술에 따른 공기조화기의 제상방법은 도 2에 도시된 바와 같이, 난방운전이 시작되면 압축기를 온/오프 시킬수 있는 온도를 설정하고(S10), 온도 설정 후 제상운전 조건인가 판단한다(S20).In the defrosting method of the air conditioner according to the related art, as shown in FIG. 2, when the heating operation is started, a temperature for turning on / off the compressor is set (S10), and after setting the temperature, it is determined whether the defrosting operation condition is made (S20). ).

상기 제상운전 조건이면 냉매 사이클을 냉방 사이클로 전환하여 팬과 사방변은 정지시키고 압축기만 동작시킨다(S30).If the defrosting operation condition, the refrigerant cycle is switched to the cooling cycle to stop the fan and the four sides to operate only the compressor (S30).

상기 제상운전 조건이 아닐경우 실내온도가 압축기를 동작시킬수 있는 조건인가 판단하고(S40), 동작시킬수 있는 조건이면 압축기와 팬을 동시에 동작시킨다(S50).If it is not the defrosting operation condition, it is determined whether the room temperature is a condition for operating the compressor (S40), and if the condition is operable, the compressor and the fan are operated simultaneously (S50).

상기 실내온도가 압축기를 동작시킬수 없는 조건이면 실내온도가 압축기를 정지시킬수 있는 조건인지 판단한다(S60).If the room temperature is a condition that can not operate the compressor, it is determined whether the room temperature is a condition that can stop the compressor (S60).

상기 실내온도가 압축기를 정지시킬수 있는 조건이면 압축기를 정지시키고(S80), 팬만 동작시키는 단계로 넘어간다.If the room temperature is a condition that can stop the compressor (S80), and only the fan is moved to the step of operating.

상기 실내온도가 압축기를 정지시킬수 없는 조건이면 압축기가 정지되었는지를 판단하고(S70), 압축기가 정지중이면 팬만 동작시킨다(S90).If the room temperature is a condition that can not stop the compressor, it is determined whether the compressor is stopped (S70), and if only the fan is stopped (S90).

상기 압축기가 계속 동작중이면 압축기와 팬을 동작시킨다.If the compressor is still in operation, operate the compressor and the fan.

이와 같은 종래의 제상방법은 정상난방 운전구간에서는 실내온도 및 설정온도와의 차를 마이컴이 감지하여 압축기와 사방변 및 팬을 동작시켜 실내온도를 일정하게 제어하고, 제상운전 구간은 난방운전중 제상운전이 시작되면 난방운전은 멈추고 제상운전만 하며, 제상운전에서 해제될경우 다시 정상난방 운전을 수행한다.In the conventional defrosting method, the microcomputer detects the difference between the room temperature and the set temperature in the normal heating operation section, and operates the compressor, the four sides and the fan to control the room temperature constantly. When operation starts, heating operation stops and only defrost operation, and when it is released from defrost operation, it performs normal heating operation again.

따라서, 제상운전시에는 전기히터를 동작하지 않고 냉방 사이클로 전환하여 압축기만 동작키므로, 제상운전 동안은 실내측의 난방이 이루어지지 않는다.Therefore, during the defrosting operation, only the compressor is operated by switching to the cooling cycle without operating the electric heater, so that the heating of the indoor side is not performed during the defrosting operation.

종래 기술에 따른 공기조화기의 제상방법은 제상운전시 전기히터를 주기적으로 온/오프 반복동작하여 실내온도를 제어하므로써 과도한 난방이 발생하고, 또한 제상운전시 난방서비스는 제공하지 않으므로 난방효율이 떨어지는 문제점이 있다.The defrosting method of the air conditioner according to the prior art generates excessive heating by controlling the room temperature by periodically turning on / off the electric heater during the defrosting operation, and in addition, the heating efficiency is inferior because the heating service is not provided during the defrosting operation. There is a problem.

본 발명은 상기와 같은 문제점을 해결하기 위해 안출한 것으로, 전기히터를 구비한 공기조화기의 제상운전시 실외배관 온도가 어느 일정온도에 도달하기 전까지는 실내온도에 따라 전기히터의 온/오프를 반복하여 난방사이클을 수행함으로써 사용자의 설정온도에 실내온도가 일치하도록 정밀제어가 가능하고 제품의 신뢰성을 향상시키는데 그 목적이 있다.The present invention has been made to solve the above problems, the on-off of the electric heater according to the indoor temperature until the outdoor piping temperature reaches a certain temperature during the defrosting operation of the air conditioner with electric heater. By repeatedly performing the heating cycle, precise control is possible so that the indoor temperature matches the user's set temperature, and the purpose is to improve the reliability of the product.

도 1 및 도 2는 종래 기술에 따른 공기조화기의 제상방법을 나타낸 플로우 차트1 and 2 is a flow chart showing a defrosting method of an air conditioner according to the prior art

도 3은 본 발명에 따른 공기조화기의 구성을 나타낸 블럭도3 is a block diagram showing the configuration of an air conditioner according to the present invention.

도 4는 본 발명에 따른 공기조화기의 제상방법을 나타낸 플로우 차트4 is a flow chart showing a defrosting method of an air conditioner according to the present invention.

본 발명에 따른 공기조화기의 제상방법의 특징은, 실외기와 실내기 및 전기히터를 구비한 공기조화기에 있어서, 상기 실외기의 배관온도가 소정온도(T2℃) 이상/이하 인지를 판단하는 단계와, 상기 실외기의 배관온도가 소정온도(T2℃) 이하이면 전기히터를 온/오프 제어하여 제상운전을 수행하는 단계와, 상기 실외기의 배관온도가 소정온도(T2℃) 이상이면 실내온도와 설정온도를 비교하여 전기히터와, 압축기와, 팬을 조절하여 정상난방 운전을 수행하는 단계로 이루어짐에 있다.The defrosting method of the air conditioner according to the present invention is characterized in that, in the air conditioner having an outdoor unit, an indoor unit, and an electric heater, determining whether or not the pipe temperature of the outdoor unit is above / below a predetermined temperature (T2 ° C.); Performing defrosting operation by controlling the electric heater on / off when the pipe temperature of the outdoor unit is lower than or equal to a predetermined temperature (T2 ° C); and when the pipe temperature of the outdoor unit is higher than or equal to a predetermined temperature (T2 ° C), Comparing the electric heater, the compressor, and the fan to the step of performing a normal heating operation.

이하, 첨부된 도면을 참조하여 본 발명에 따른 공기조화기의 제상방법을 상세하게 설명하면 다음과 같다.Hereinafter, the defrosting method of the air conditioner according to the present invention with reference to the accompanying drawings in detail as follows.

도 3은 본 발명에 따른 공기조화기를 개략적으로 나타낸 블럭도이고, 도 4는 본 발명에 따른 공기조화기의 제상방법을 나타낸 플로우 차트이다.Figure 3 is a block diagram schematically showing an air conditioner according to the present invention, Figure 4 is a flow chart showing a defrosting method of the air conditioner according to the present invention.

본 발명에 따른 공기조화기의 구성을 살펴보면 도 3에 도시된 바와 같이, 실내/실외 온도를 감지하는 온도 감지회로(10a), 전원이 인가되는 정전압을 유지하는 정전압 회로(10b), 리셋동작을 하는 리셋 회로(10c), 클럭을 발생하는 발진회로(10d)로 구성되는 회로부(10)와, 상기 회로부(10)에서 출력되는 신호를 입력받아 제어신호를 출력하는 제어부(20)와, 상기 제어부의 출력신호를 증폭하는 전류 증폭기(30)와, 압축기(40)와, 사방변(50)과, 전기히터(60)와, 팬(70)으로 구성된다.Referring to the configuration of the air conditioner according to the present invention, as shown in Figure 3, the temperature sensing circuit 10a for detecting the indoor / outdoor temperature, the constant voltage circuit 10b for maintaining a constant voltage to which the power is applied, the reset operation A circuit unit 10 including a reset circuit 10c, an oscillation circuit 10d for generating a clock, a control unit 20 for receiving a signal output from the circuit unit 10, and outputting a control signal; And a current amplifier 30 for amplifying the output signal of the compressor, a compressor 40, four sides 50, an electric heater 60, and a fan 70.

정상난방 운전중 실내온도 조건에 따라 전기히터(60)와 팬(70)을 동작시키거나, 또는 압축기(40)와 사방변(50) 및 팬(70)이 동작하다가 실외측 열교환기에 결빙이 생겨 실내배관 또는 실외배관의 온도가 어느 일정온도 이하로 내려가면, 압축기(40) 및 사방변(50)은 정지시키고 팬(70)과 전기히터(60)로만 실내측의 온도제어를 수행한다.During the normal heating operation, the electric heater 60 and the fan 70 are operated according to the room temperature condition, or the compressor 40, the four sides 50 and the fan 70 are operated, and freezing occurs in the outdoor heat exchanger. When the temperature of the indoor piping or the outdoor piping falls below a certain temperature, the compressor 40 and the four sides 50 are stopped and only the fan 70 and the electric heater 60 perform indoor temperature control.

이때, 실내온도 및 설정온도를 제어부가 주기적으로 체크하여, 선택된 설정온도에 실내온도가 일치하도록 전기히터(60)를 온/오프로 제어하고, 제품 운전중 설정온도가 변화되면 이 변화된 설정온도가 실내온도에 일치하도록 제어부(20)가 전기히터(60)의 온/오프 동작을 제어한다.At this time, the control unit periodically checks the room temperature and the set temperature, and controls the electric heater 60 on / off so that the room temperature matches the selected set temperature, and if the set temperature is changed during the operation of the product, the changed set temperature is changed. The controller 20 controls the on / off operation of the electric heater 60 to match the room temperature.

따라서, 정상난방 운전시 제어부를 통해 설정온도 대비 실내온도를 정밀제어하는 것과 동일한 조건으로 제상운전시에도 제어부(20)를 통해 전기히터(60)의 온/오프 동작을 제어함으로써 실내온도의 정밀 제어가 가능한다.Therefore, precise control of the indoor temperature is controlled by controlling the on / off operation of the electric heater 60 through the control unit 20 even during the defrosting operation under the same conditions as the precise control of the room temperature to the set temperature through the control unit in the normal heating operation. Is possible.

이와 같이, 실외측 열교환기의 배관표면에 착상된 결빙은 자연 공랭으로 해빙시키며, 어느 일정온도 이상으로 실외배관 온도가 상승하면 제품은 다시 정상난방 운전구간으로 복귀하여 실내측의 온도를 정밀제어하며, 실외온도가 너무 낮아 실외배관 온도가 일정온도 이상으로 상승하지 못할경우 팬(70)과 전기히터(60)로만 실내온도를 제어하게 된다.In this way, the frost formed on the pipe surface of the outdoor heat exchanger is thawed by natural air cooling, and when the outdoor pipe temperature rises above a certain temperature, the product returns to the normal heating operation section to precisely control the indoor temperature. If the outdoor temperature is too low and the outdoor piping temperature does not rise above a certain temperature, the indoor temperature is controlled only by the fan 70 and the electric heater 60.

왜냐하면, 실외온도가 너무 낮은 경우는 실외측 열교환기에서 열교환이 잘 안될 것이고 이는 곧 실내의 난방효율도 함께 떨어뜨리는 요인으로 작용하기 때문이다.Because, if the outdoor temperature is too low, the heat exchanger in the outdoor heat exchanger will not be good, which is a factor that also reduces the heating efficiency of the room.

본 발명에 따른 공기조화기의 제상방법은 도 4에 나타낸 바와 같이, 난방운전이 시작되면 압축기를 온/오프 할수 있는 온도와, 전기히터를 온/오프 할수있는 온도를 초기에 설정한다(S100).In the defrosting method of the air conditioner according to the present invention, as shown in FIG. 4, when the heating operation is started, the temperature at which the compressor can be turned on / off and the temperature at which the electric heater is turned on / off are initially set (S100).

이하, 압축기를 동작시킬수 있는 온도는 설정온도이고, 압축기를 정지시킬수 있는 온도는 설정온도+T1℃이며, 또한 전기히터를 동작시킬수 있는 온도는 설정온도가 실내온도 이상일 경우이고, 전기히터를 정지시킬수 있는 온도는 설정온도와 실내온도가 일치할때이다.The temperature at which the compressor can operate is set temperature, the temperature at which the compressor can be stopped is set temperature + T1 ° C, and the temperature at which the electric heater can be operated is when the set temperature is above the room temperature and the electric heater can be stopped. The temperature present is when the set temperature matches the room temperature.

먼저, 제상운전 모드에 대한 작용효과를 설명하면 다음과 같다.First, the operational effect on the defrosting operation mode is as follows.

상기 온도설정 후 초기운전시 실외배관 온도가 T2℃ 이하인지 판단하고(S200), 이하이면 제상운전을 수행한다(S300).In the initial operation after setting the temperature, it is determined whether the outdoor pipe temperature is less than or equal to T2 ° C. (S200).

상기 제상운전이 시작되면 압축기 및 사방변은 정지시키고(S301), 실외배관 온도가 T2℃ 이상인가를 판단한다(S302).When the defrosting operation is started, the compressor and the four sides are stopped (S301), and it is determined whether the outdoor piping temperature is T2 ° C or more (S302).

이는 정상운전으로 복귀할 것인지 계속해서 제상운전을 수행할 것인지를 판단하기 위함이다.This is to determine whether to return to normal operation or to continue the defrosting operation.

상기 실외배관 온도가 T2℃ 이하이면 실내온도가 설정온도+T1℃ 이상인가를 판단하고(S303), 이상이면 전기히터는 정지시키고 팬만 동작시킨다(S304).If the outdoor pipe temperature is T2 ° C or less, it is determined whether the room temperature is set temperature + T1 ° C or more (S303).

왜냐하면, 실내온도가 사용자가 원하는 소망온도에 일치되었기 때문이다.This is because the room temperature matches the desired temperature desired by the user.

상기 실내온도가 설정온도+T1℃ 이하이면 실내온도가 설정온도-T4℃ 이상인지 판별하고(S305), 실내온도가 설정온도 -T4℃ 이하이면 전기히터와 팬을 동시에 동작시킨다(S306).If the indoor temperature is set temperature + T1 ℃ or less, it is determined whether the room temperature is set temperature-T4 ℃ or more (S305), if the indoor temperature is set temperature -T4 ℃ or less to operate the electric heater and the fan at the same time (S306).

다음 정상난방 운전모드에 대한 작용효과를 설명하면 다음과 같다.Next, the effects of the normal heating operation mode will be described.

상기 초기운전시의 실외배관 온도가 T2℃ 이상이면 실외배관 온도가 -T3℃ 이하인지 다시 판단한다(S400).If the outdoor pipe temperature at the initial operation is T2 ℃ or more, it is determined again whether the outdoor pipe temperature is -T3 ℃ or less (S400).

상기 실외배관 온도가 -T3℃ 이하이면 제상운전 구간으로 복귀되며, 실외배관 온도가 -T3℃ 이상이면 정상난방 운전을 수행하고 실내온도가 설정온도 이하인지 판단한다(S500).If the outdoor pipe temperature is less than -T3 ℃ return to the defrosting operation section, if the outdoor pipe temperature is more than -T3 ℃ to perform a normal heating operation and determines whether the room temperature is below the set temperature (S500).

상기 실내온도가 설정온도 이하이면 팬과 전기히터를 동시에 동작시키고(S600), 실내온도가 설정온도 이상이면 실내온도가 설정온도〈 실내온도〈 설정온도+T1℃ 구간에 포함되어 있는지 판별한다(S700).If the indoor temperature is lower than the set temperature, the fan and the electric heater are operated at the same time (S600). If the indoor temperature is higher than the set temperature, it is determined whether the indoor temperature is included in the set temperature <room temperature <set temperature + T1 ℃ (S700). ).

상기 실내온도가 구간내에 포함되어 있으면 압축기가 정지중인가를 판단하고, 압축기의 동작여부에 따라 사방변과 팬 제어를 수행한다(S800).If the indoor temperature is included in the section, it is determined whether the compressor is stopped, and the four sides and the fan control according to the operation of the compressor (S800).

상기 실내온도가 구간내에 포함되어 있지 않으면 실내온도가 설정온도+T1℃ 이상인가를 판단하고(S900), 이상이면 압축기와 전기히터는 정지시키고 팬과 사방변만 동작시킨다(S1000).If the indoor temperature is not included in the interval, it is determined whether the indoor temperature is equal to or higher than the set temperature + T1 ° C. (S900). If the indoor temperature is not equal to the above temperature, the compressor and the electric heater are stopped and only the fan and the four sides are operated (S1000).

따라서, 제상운전시 실외배관 온도가 어느 일정온도에 도달하기 전까지는 실내온도에 따라 전기히터의 온/오프 동작을 반복함으로써 난방서비스를 제공할 수있다.Therefore, the heating service can be provided by repeating the on / off operation of the electric heater according to the indoor temperature until the outdoor piping temperature reaches a certain temperature during the defrosting operation.

본 발명에 따른 공기조화기의 제상방법은 공기조화기의 제상운전 구간에도 전기히터를 이용하여 난방운전시와 동일하게 난방운전을 제공하여 사용자의 설정온도에 실내온도가 일치하도록 정밀제어를 함으로써 제품의 신뢰성을 향상시키는 효과가 있다.The defrosting method of the air conditioner according to the present invention provides a heating operation in the defrosting operation section of the air conditioner using the electric heater as in the heating operation, and precisely controls the indoor temperature to match the user's set temperature. There is an effect of improving the reliability.

Claims (4)

실외기와 실내기 및 전기히터를 구비한 공기조화기의 제상방법에 있어서,In the defrosting method of an air conditioner having an outdoor unit, an indoor unit, and an electric heater, 상기 실외기의 배관온도가 소정온도(T2℃) 이하/이상인지 판단하는 단계;Determining whether a pipe temperature of the outdoor unit is equal to or less than a predetermined temperature (T2 ° C.); 상기 실외기의 배관온도가 소정온도(T2℃) 이하이면 실외기의 배관온도가 일정온도에 도달할때까지 실내온도에 따라 전기히터의 온/오프 동작을 반복함으로써 제상운전을 수행하는 단계;Performing the defrosting operation by repeating the on / off operation of the electric heater according to the indoor temperature until the piping temperature of the outdoor unit is lower than a predetermined temperature (T2 ° C.); 상기 실외기의 배관온도가 소정온도(T2℃) 이상이면 실내온도가 일정온도에 도달할때까지 압축기와, 팬과, 전기히터의 온/오프 동작을 반복함으로써 난방운전을 수행하는 단계를 포함하여 이루어짐을 특징으로 하는 공기조화기의 제상방법.If the piping temperature of the outdoor unit is more than a predetermined temperature (T2 ℃) comprises the step of performing a heating operation by repeating the on / off operation of the compressor, the fan, and the electric heater until the room temperature reaches a certain temperature. Defrost method of an air conditioner, characterized in that. 제 1항에 있어서,The method of claim 1, 상기 제상운전을 수행하는 단계에서 실외기의 배관온도가 소정온도(T2℃) 이상이면 정상난방 운전구간으로 자동 복귀됨을 특징으로 하는 공기조화기의 제상방법.Defrosting method of the air conditioner, characterized in that in the step of performing the defrosting operation if the piping temperature of the outdoor unit is more than a predetermined temperature (T2 ℃) automatically returns to the normal heating operation section. 제 2항에 있어서,The method of claim 2, 상기 제상운전을 수행하는 단계에서 실내온도가 사용자가 원하는 설정온도 이하이면 전기히터는 오프 상태임을 특징으로 하는 공기조화기의 제상방법.Defrosting method of the air conditioner, characterized in that the electric heater is off when the indoor temperature is less than the desired set temperature in the step of performing the defrosting operation. 제 3항에 있어서,The method of claim 3, 상기 실내온도가 사용자가 원하는 설정온도 이상이면 전기히터는 온 상태임을 특징으로 하는 공기조화기의 제상방법.Defrosting method of an air conditioner, characterized in that the electric heater is on if the room temperature is higher than the desired set temperature.
KR1019970058157A 1997-11-05 1997-11-05 Method for defrost of the air conditioner KR100257198B1 (en)

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