KR100626425B1 - Method for control operating delay of air conditioner - Google Patents

Method for control operating delay of air conditioner Download PDF

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KR100626425B1
KR100626425B1 KR1020040096939A KR20040096939A KR100626425B1 KR 100626425 B1 KR100626425 B1 KR 100626425B1 KR 1020040096939 A KR1020040096939 A KR 1020040096939A KR 20040096939 A KR20040096939 A KR 20040096939A KR 100626425 B1 KR100626425 B1 KR 100626425B1
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South Korea
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compressor
temperature
outdoor
air conditioner
delay control
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KR1020040096939A
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Korean (ko)
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KR20060058203A (en
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하종권
김영춘
임병국
정현석
이승택
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삼성전자주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • 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
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • 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
    • 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
    • F25B2600/0251—Compressor control by controlling speed with on-off operation
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

본 발명은 하나의 실외기에 복수의 실내기가 연결되는 냉난방 겸용의 멀티형 공기조화기에 관한 것으로, 압축기의 기동지연조건을 운전모드, 실외온도, 운전대기시간, 시스템 온도 등으로 한정하여 압축기 보호를 위한 기동지연시간을 최적화할 수 있는 운전지연 제어방법을 제공하는데 그 목적이 있다.The present invention relates to a multi-type air conditioner for both heating and cooling, in which a plurality of indoor units are connected to one outdoor unit, and the start delay condition of the compressor is limited to an operation mode, an outdoor temperature, an operation standby time, a system temperature, and the like. The purpose of the present invention is to provide an operation delay control method that can optimize the delay time.

이를 위해 본 발명은, 압축기 보호를 위한 공기조화기의 운전지연 제어방법에 있어서, 공기조화기의 운전모드가 난방운전인가 판단하고, 난방운전이면 실외온도를 감지하여 미리 정해진 설정온도 이하인가 판단하고, 실외온도가 설정온도 이하이면 실외기 전원 인가 후 운전대기시간이 일정시간을 경과하였는가 판단하고, 운전대기시간이 일정시간을 경과하지 않으면 압축기 토출온도와 실외열교환기 배관온도차를 산출하여 미리 정해진 기준온도 이하인가를 판단하고, 압축기 토출온도와 실외열교환기 배관온도차가 기준온도 이하이면 압축기 기동을 지연시키고 히터를 가동하여 압축기를 가열시키는 압축기의 기동지연제어를 행하는 것이다.To this end, the present invention, in the operation delay control method of the air conditioner for protecting the compressor, it is determined whether the operation mode of the air conditioner heating operation, if the heating operation senses the outdoor temperature to determine whether the predetermined temperature or less If the outdoor temperature is less than the set temperature, it is determined whether the operation standby time has passed a certain time after the outdoor unit power is applied.If the operation standby time does not pass the predetermined time, the difference between the compressor discharge temperature and the outdoor heat exchanger pipe temperature is calculated and If the difference between the discharge temperature of the compressor and the pipe temperature of the outdoor heat exchanger is equal to or lower than the reference temperature, the compressor is delayed to start the compressor and the heater is started to control the start delay of the compressor to heat the compressor.

Description

공기조화기의 운전지연 제어방법{Method for control operating delay of air conditioner}Operation delay control method of air conditioner {Method for control operating delay of air conditioner}

도 1은 본 발명에 의한 멀티형 공기조화기의 냉매유로도,1 is a refrigerant flow path of a multi-type air conditioner according to the present invention;

도 2는 본 발명의 일실시예에 의한 멀티형 공기조화기의 제어 구성도,2 is a control block diagram of a multi-type air conditioner according to an embodiment of the present invention;

도 3은 본 발명에 의한 멀티형 공기조화기의 운전지연 제어방법의 동작 흐름도.3 is a flowchart illustrating an operation delay control method for a multi-type air conditioner according to the present invention;

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 실외기 12 : 압축기10: outdoor unit 12: compressor

14 : 사방밸브 16 : 실외열교환기14 four-way valve 16 outdoor heat exchanger

26 : 히터(CCH) 28 : 토출온도센서26: heater (CCH) 28: discharge temperature sensor

30 : 실외배관온도센서 50,60 : 실내기30: outdoor piping temperature sensor 50,60: indoor unit

110 : 실외온도감지부 140 : 제어부110: outdoor temperature detection unit 140: control unit

본 발명은 하나의 실외기에 복수의 실내기가 연결되는 냉난방 겸용의 멀티형 공기조화기에 관한 것으로, 특히 압축기의 기동지연시간을 최적화하는 공기조화기 의 운전지연 제어방법에 관한 것이다.The present invention relates to a multi-type air conditioner for both air conditioning and heating, in which a plurality of indoor units are connected to one outdoor unit, and more particularly, to a method of controlling an operation delay of an air conditioner for optimizing a start delay time of a compressor.

일반적으로, 공기조화기는 실내의 냉방 또는 난방을 수행하기 위한 목적으로 사용되는 장치로서, 이러한 공기조화기에는 그 내부로 냉매가 순환되는 통상의 냉동싸이클이 적용되어 액체상태의 냉매가 기화할 때에 주위의 열을 흡수하며 액화할 때에 그 열을 방출하는 특성에 의하여 냉방 또는 난방작용을 수행하게 되며, 공기조화기의 냉방 또는 난방작용은 그 냉매의 순환방향에 따라 결정된다.In general, an air conditioner is a device used for cooling or heating a room, and a general refrigeration cycle in which a refrigerant is circulated therein is applied to the air conditioner, so that when the liquid refrigerant evaporates, Cooling or heating is performed by the characteristic of absorbing the heat and releasing the heat, and the cooling or heating of the air conditioner is determined by the circulation direction of the refrigerant.

한편, 통상의 공기조화기는 하나의 실외기에 하나의 실내기를 설치하는 것이 일반적이나, 최근에는 하나의 실외기에 다양한 형태와 용량의 실내기를 복수 개 연결하여 학교, 대형 빌딩 또는 아파트 등 복수의 실내공간에 대하여 각각 냉방 또는 난방운전을 수행하는 최적의 공조환경을 구현하고 있다.On the other hand, a general air conditioner is installed in one outdoor unit in one outdoor unit, but recently, a plurality of indoor units of various shapes and capacities are connected to one outdoor unit in a plurality of indoor spaces such as schools, large buildings or apartments For each air conditioner, an optimal air conditioning environment is implemented.

이러한 멀티형 공기조화기는 복수 실내기의 냉난방능력을 조절하기 위해 대용량의 압축기 또는 복수의 압축기를 구비하고 있으나, 상기 압축기는 저온의 영하온도에서 냉매가스와 윤활오일이 분리되는 상태가 발생하여 윤활오일의 점도가 높아지고, 이에 따라 실린더와 피스톤에 원활한 윤활오일의 공급이 어려워지므로 이러한 상태에서 압축기의 무리한 운전은 압축기의 성능을 저하시키고 결국에는 압축기의 수명을 저하시키는 결과를 초래하게 된다.Such a multi-type air conditioner is provided with a large-capacity compressor or a plurality of compressors in order to control the cooling and heating capacity of the plurality of indoor units, but the compressor has a state in which the refrigerant gas and the lubricating oil are separated at a low temperature below zero. Since this makes it difficult to supply smooth lubricating oil to the cylinder and the piston, excessive operation of the compressor in such a state may result in deterioration of the performance of the compressor and eventually in the life of the compressor.

이러한 문제점을 해결하기 위해 압축기 보호를 위한 기동지연 제어 알고리즘이 다양하게 제시되고 있는 바, 종래에는 전원 온 후 기동시작신호가 입력되면 압축기 온도와 실외열교환기 온도차를 비교하여 압축기 기동가능영역인지를 판단하고, 기동가능영역이면 압축기를 기동하고, 아닐 경우에는 압축기 기동을 지연하고 설정지연시간이 경과하였는지를 판단하여 설정지연시간이 경과해야만 압축기를 기동시키도록 하였다.In order to solve this problem, various start delay control algorithms for protecting the compressor have been proposed. In the related art, when a start signal is input after power is turned on, it is determined whether the compressor can be started by comparing the temperature difference between the compressor temperature and the outdoor heat exchanger. The compressor is started if it is a startable area. If not, the compressor is delayed and it is determined whether the set delay time has elapsed, and the compressor is started only after the set delay time has elapsed.

그런데, 이와 같은 종래 기동지연 제어 알고리즘은, 압축기 기동가능영역의 판단기준이 압축기 온도와 실외열교환기 온도와 같이 시스템상의 온도만을 고려함으로써 압축기 보호제어가 불필요한 냉방영역과 난방표준조건 등에서도 본 제어가 적용되고, 기동지연판단도 초기 한번만 수행함으로써 기동지연시간이 상당히 길어져 필요한 때 적절한 냉난방을 할 수 없어 소비자의 불만이 가중되고 크레임의 주요한 원인이 된다는 문제점이 있었다.However, in the conventional start delay control algorithm, the control criterion of the compressor startable region considers only the temperature on the system such as the compressor temperature and the outdoor heat exchanger temperature, so that the control is performed even in the cooling zone and heating standard condition where the compressor protection control is unnecessary. In addition, since the start delay is also performed only once, the start delay time is considerably longer, and there is a problem in that it is not possible to adequately heat and cool when necessary, which increases the customer's dissatisfaction and is a major cause of the claims.

따라서, 본 발명은 상기와 같은 종래의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 압축기 보호를 위한 기동지연시간을 최적화하는 공기조화기의 운전지연 제어방법을 제공하는데 있다.Accordingly, an object of the present invention is to provide a method for controlling an operation delay of an air conditioner that optimizes a start delay time for protecting a compressor.

상기 목적을 달성하기 위하여 본 발명에 의한 공기조화기의 운전지연 제어방법은, 압축기 보호를 위한 공기조화기의 운전지연 제어방법에 있어서, 상기 공기조화기의 운전모드가 난방운전인가 판단하고, 난방운전이면 실외온도를 감지하여 미리 정해진 설정온도 이하인가 판단하고, 실외온도가 설정온도 이하이면 실외기 전원 인가 후 운전대기시간이 일정시간을 경과하였는가 판단하고, 운전대기시간이 일정시간을 경과하지 않으면 압축기 기동가능영역인지를 판단하여 압축기의 기동지연제어를 행하는 것을 특징으로 한다.In order to achieve the above object, the operation delay control method of an air conditioner according to the present invention is a control method of an operation delay control method of an air conditioner for protecting a compressor. In operation, it senses the outdoor temperature to determine whether it is below a predetermined set temperature.If the outdoor temperature is below the set temperature, it is determined whether the operation standby time has passed a certain time after the power supply of the outdoor unit. It is characterized in that the start delay control of the compressor is performed by determining whether or not it is a startable area.

상기 압축기 기동가능영역은 압축기 토출온도와 실외열교환기 배관온도차를 산출하여 미리 정해진 기준온도와의 비교결과에 따라 판단하고; 압축기 토출온도와 실외열교환기 배관온도차가 기준온도 이하이면 상기 압축기의 기동지연제어를 행하는 것을 특징으로 한다.The compressor startable area is determined according to a result of comparing the discharge temperature of the compressor and the pipe temperature of the outdoor heat exchanger with a predetermined reference temperature; If the compressor discharge temperature and the outdoor heat exchanger pipe temperature difference is less than the reference temperature, the start delay control of the compressor is performed.

상기 압축기의 기동지연제어는 압축기 보호를 위해 압축기 기동을 지연시키면서 히터를 가동하여 압축기를 가열시키는 것을 특징으로 한다.Starting delay control of the compressor is characterized in that for heating the compressor by operating the heater while delaying the compressor start to protect the compressor.

또한, 본 발명은 상기 판단조건에서 공기조화기의 운전모드가 난방운전이 아니고 실외온도가 설정온도 이하가 아니며, 운전대기시간이 일정시간을 경과하거나 압축기 기동가능영역이면 기동지연없이 압축기를 정상 기동하는 것을 특징으로 한다.In the present invention, if the operation mode of the air conditioner is not a heating operation and the outdoor temperature is not lower than the set temperature, and the operation standby time has elapsed for a predetermined time or the compressor can start, the compressor can be normally started without delay. Characterized in that.

이하, 본 발명의 일실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 멀티형 공기조화기의 냉매유로도이다.1 is a refrigerant flow diagram of a multi-type air conditioner according to the present invention.

도 1에서, 본 발명의 멀티형 공기조화기는 통상의 냉매싸이클을 형성하는 하나의 실외기(10)와, 상기 실외기(10)에 연결되어 실내 냉난방을 행하는 복수의 실내기(50,60)를 구비하며, 상기 복수의 실내기(50,60)와 실외기(10) 사이에는 냉매배관이 설치된다.In FIG. 1, the multi-type air conditioner of the present invention includes one outdoor unit 10 forming a conventional refrigerant cycle, and a plurality of indoor units 50 and 60 connected to the outdoor unit 10 to perform indoor cooling and heating. A refrigerant pipe is installed between the plurality of indoor units 50 and 60 and the outdoor unit 10.

상기 실외기(10)는 냉매를 고온고압의 기체상태로 압축하는 압축기(12)와, 상기 압축기(12)에서 압축된 고온고압 기체냉매의 흐름방향을 운전모드(냉방 또는 난방)에 따라 조절하는 사방밸브(14)와, 상기 압축기(12)에서 압축된 고온고압의 기체냉매를 전달받아 실외공기와 열교환하는 실외열교환기(16)와, 상기 실외열교환기(16)에서 열교환이 이루어지도록 실외팬모터(20)에 의해 실외공기를 강제 송풍시키는 실외팬(18)과, 냉매 유량을 조절하면서 열교환된 냉매를 감압 팽창시키는 실 외 전동변(22)을 포함한다.The outdoor unit 10 is a compressor 12 for compressing a refrigerant into a gaseous state of high temperature and high pressure, and the flow direction of the high temperature and high pressure gas refrigerant compressed by the compressor 12 is adjusted in all directions according to an operation mode (cooling or heating). The valve 14, the outdoor heat exchanger 16 which receives the high temperature and high pressure gas refrigerant compressed by the compressor 12 and exchanges heat with the outdoor air, and the outdoor fan motor to perform heat exchange in the outdoor heat exchanger 16. And an outdoor fan 18 for forcibly blowing outdoor air by the air 20, and an outdoor electric valve 22 for expanding the pressure-exchanged refrigerant under reduced pressure while controlling the flow rate of the refrigerant.

상기 압축기(12)의 흡입측에는 압축기(12)에 유입되는 냉매를 완전 기체상태의 가스로 변환시키는 어큐뮬레이터(24)가 설치되고, 압축기(12)의 하단측에는 오일 유동성, 압축기(12) 바닥온도 등을 운전조건에 양호하게 만들기 위해 압축기(12) 하단을 가열하는 히터(26, CCH; Crank Case Heater)가 설치된다.At the suction side of the compressor 12, an accumulator 24 for converting the refrigerant flowing into the compressor 12 into a gas in a completely gaseous state is installed, and at the lower end side of the compressor 12, oil fluidity, the bottom temperature of the compressor 12, and the like. A heater 26 (CCH; Crank Case Heater) for heating the lower end of the compressor 12 is installed to make it good to the operating conditions.

또한, 상기 압축기(12)의 토출배관에는 압축기(12)에서 토출되는 냉매온도를 감지하는 토출온도센서(28)가 설치되는데, 상기 토출온도센서(28)는 압축기(12)의 토출배관뿐만 아니라 압축기(12)의 토출측 온도를 감지할 수 있는 임의의 위치에 설치될 수 있다.In addition, the discharge pipe of the compressor 12 is provided with a discharge temperature sensor 28 for detecting the refrigerant temperature discharged from the compressor 12, the discharge temperature sensor 28 is not only discharge pipe of the compressor 12 It may be installed at any position that can sense the discharge side temperature of the compressor (12).

상기 실외열교환기(16)에는 실외열교환기(16)의 배관온도를 감지하는 실외배관온도센서(30)가 설치되는데, 이 실외배관온도센서(30)는 실외열교환기(16)의 배관뿐만 아니라 실외열교환기(16)를 통과하는 냉매온도를 감지할 수 있는 임의의 위치에 설치될 수 있다.The outdoor heat exchanger (16) is provided with an outdoor pipe temperature sensor (30) for detecting a pipe temperature of the outdoor heat exchanger (16), the outdoor pipe temperature sensor (30) as well as the pipe of the outdoor heat exchanger (16). It can be installed at any position that can sense the refrigerant temperature passing through the outdoor heat exchanger (16).

상기 제1 및 제2실내기(50,60)는 냉매를 전달받아 실내공기와 열교환하는 제1 및 제2실내열교환기(52,62)와, 상기 제1 및 제2실내열교환기(52,62)에서 열교환이 이루어지도록 제1 및 제2실내팬모터(54,64)에 의해 실내공기를 강제 송풍시키는 제1 및 제2실내팬(56,66)과, 상기 제1 및 제2실내열교환기(52,62)로 흐르는 냉매 흐름을 조절하는 제1 및 제2실내 전동변(58,68)을 포함한다.The first and second indoor rooms (50, 60) are the first and second indoor heat exchangers (52, 62) for receiving a refrigerant and heat exchange with the indoor air, and the first and second indoor heat exchangers (52, 62) First and second indoor fan (56,66) for forcibly blowing the indoor air by the first and second indoor fan motor (54,64) to heat exchange in the), and the first and second indoor heat exchanger First and second indoor transmission valves 58 and 68 for regulating the flow of refrigerant to 52 and 62.

이와 같이 구성된 실외기(10)와 실내기(50,60)를 가지는 멀티형 공기조화기에서, 난방시에는 사방밸브(14)가 온되어 냉매가 도 1의 점선화살표 방향을 따라 압축기(12)→사방밸브(14) →제1 또는 제2실내열교환기(52,62) →실외 전동변(22) →실외열교환기(16) →사방밸브(14) →어큐뮬레이터(24) →압축기(12) 순으로 순환되는 냉매싸이클을 형성한다.In the multi-type air conditioner having the outdoor unit 10 and the indoor units 50 and 60 configured as described above, the four-way valve 14 is turned on at the time of heating so that the refrigerant flows from the compressor 12 to the four-way valve along the dotted arrow direction in FIG. 1. (14) → first or second indoor heat exchanger (52, 62) → outdoor electric valve (22) → outdoor heat exchanger (16) → four-way valve (14) → accumulator (24) → compressor (12) To form a refrigerant cycle.

반면, 냉방시에는 사방밸브(14)가 오프되어 냉매가 도 1의 실선화살표 방향을 따라 압축기(12) →사방밸브(14) →실외열교환기(16) →실외 전동변(22) →제1 또는 제2실내열교환기(52,62) →사방밸브(14) →어큐뮬레이터(24) →압축기(12) 순으로 순환되는 냉매싸이클을 형성한다.On the other hand, during cooling, the four-way valve 14 is turned off so that the refrigerant flows along the solid arrow direction of FIG. 1 to the compressor 12 → four-way valve 14 → outdoor heat exchanger 16 → outdoor electric valve 22 → first. Alternatively, a refrigerant cycle circulated in the order of the second indoor heat exchangers 52 and 62 → four-way valve 14 → accumulator 24 → compressor 12 is formed.

도 2는 본 발명의 일실시예에 의한 멀티형 공기조화기의 제어 구성도로서, 신호입력부(100), 실외온도감지부(110), 실외배관온도감지부(120), 토출온도감지부(130), 제어부(140), 압축기구동부(150), 실외팬모터구동부(160), 실내팬모터구동부(170), 히터구동부(180) 및 밸브구동부(190)를 포함하여 구성된다.2 is a control block diagram of a multi-type air conditioner according to an embodiment of the present invention, the signal input unit 100, outdoor temperature sensing unit 110, outdoor piping temperature sensing unit 120, discharge temperature sensing unit 130 ), The controller 140, the compressor driver 150, the outdoor fan motor driver 160, the indoor fan motor driver 170, the heater driver 180, and the valve driver 190.

상기 신호입력부(100)는 사용자가 선택하는 운전모드(냉방 또는 난방)와 설정온도, 설정풍량, 설정풍향 등의 운전정보를 입력하도록 조작부 등으로 구성되고, 실외온도감지부(110)는 실외기(10)로 흡입되는 실외공기온도(To) 즉, 외기온도를 감지한다.The signal input unit 100 includes an operation unit for inputting operation information such as an operation mode (cooling or heating) selected by a user, a set temperature, a set air volume, a set wind direction, and the like. The outdoor temperature sensor 110 includes an outdoor unit ( 10) Detects the outdoor air temperature (To) that is sucked into the outside air temperature.

상기 실외배관온도감지부(120)는 실외열교환기(16)의 배관온도를 감지하는 실외배관온도센서(30) 등으로 구성되고, 토출온도감지부(130)는 압축기(12)의 토출배관온도를 감지하는 토출온도센서(28) 등으로 구성된다.The outdoor pipe temperature detection unit 120 is composed of an outdoor pipe temperature sensor 30 for detecting a pipe temperature of the outdoor heat exchanger 16, the discharge temperature detection unit 130 is a discharge pipe temperature of the compressor 12. It consists of a discharge temperature sensor 28 for detecting the.

상기 제어부(140)는 운전모드가 난방일 때 실외온도(To)가 설정온도(Ts) 이하이고 운전대기시간이 일정시간을 경과하지 않은 상태에서 압축기(12) 토출온도와 실외열교환기(16) 배관온도차(Tc-E)가 기준온도(β) 이하인 기동지연조건을 모두 만족하면 압축기(12)의 기동지연을 제어하는 것으로, 실내기(50,60) 마이컴 또는 실외기(10) 마이컴을 포함한다.The control unit 140 discharges the compressor 12 and the outdoor heat exchanger 16 when the outdoor temperature To is less than the set temperature Ts and the operation standby time does not pass a predetermined time when the operation mode is heating. When the pipe temperature difference Tc-E satisfies all of the start delay conditions that are equal to or less than the reference temperature β, the start delay of the compressor 12 is controlled, and includes the indoor units 50 and 60 microcomputers or the outdoor unit 10 microcomputers.

상기 압축기구동부(150)는 제어부(140)의 압축기제어신호에 따라 압축기(12)의 구동을 제어하고, 실외팬모터구동부(160)는 제어부(140)의 실외팬제어신호에 따라 실외팬모터(20)의 구동을 제어하며, 실내팬모터구동부(170)는 제어부(140)의 실내팬제어신호에 따라 실내팬모터(54,64)의 구동을 제어한다.The compressor driver 150 controls the driving of the compressor 12 according to the compressor control signal of the controller 140, and the outdoor fan motor driver 160 controls the outdoor fan motor according to the outdoor fan control signal of the controller 140. 20, and the indoor fan motor driver 170 controls the driving of the indoor fan motors 54 and 64 according to the indoor fan control signal of the controller 140.

상기 히터구동부(180)는 제어부(140)의 히터제어신호에 따라 압축기(12)의 하단측에 설치된 히터(26,CCH)의 구동을 제어하고, 밸브구동부(190)는 제어부(140)의 밸브제어신호에 따라 사방밸브(14), 실외 전동변(22), 실내 전동변(58,68)의 구동을 제어한다.The heater driver 180 controls the driving of the heaters 26 and CCH installed at the lower side of the compressor 12 according to the heater control signal of the controller 140, and the valve driver 190 is a valve of the controller 140. According to the control signal, the driving of the four-way valve 14, the outdoor electric valve 22, and the indoor electric valve 58, 68 is controlled.

이하, 상기와 같이 구성된 공기조화기의 운전지연 제어방법의 동작과정 및 작용효과를 설명한다.Hereinafter, an operation process and an effect of the operation delay control method of the air conditioner configured as described above will be described.

도 3은 본 발명에 의한 멀티형 공기조화기의 운전지연 제어방법의 동작 흐름도이다.3 is a flowchart illustrating an operation delay control method for a multi-type air conditioner according to the present invention.

실외기(10)에 전원이 공급되면, 사용자가 선택하는 운전모드(예를 들면, 난방) 등의 정보가 신호입력부(100)를 통해 제어부(140)에 입력된다.When power is supplied to the outdoor unit 10, information such as an operation mode (for example, heating) selected by the user is input to the controller 140 through the signal input unit 100.

상기 제어부(140)는 선택된 운전모드에 따라 밸브구동부(190)를 제어해서 사방밸브(14)가 난방싸이클로 전환되도록 제어한다.The controller 140 controls the valve driver 190 to be switched to the heating cycle by controlling the valve driver 190 according to the selected operation mode.

따라서, 제어부(120)는 운전 온인가를 판단하여(S100), 운전 온이면 현재의 운전모드를 확인하여 난방운전인가를 판단하고(S110), 난방운전이 아니면(NO) 압축기(12) 보호제어가 불필요한 냉방영역이라고 판단하여 압축기(12)를 정상 기동한다(S180).Therefore, the controller 120 determines whether the operation is on (S100), and if the operation is on, determines whether the heating operation is performed by checking the current operation mode (S110). Determines that it is an unnecessary cooling zone, and starts the compressor 12 normally (S180).

난방운전이면(YES) 실외기(10)내로 흡입되는 실외공기의 온도(To) 즉, 외기온도를 실외온도감지부(110)에서 감지하여 제어부(140)에 출력하고(S120), 제어부(140)는 실외온도감지부(110)로부터 입력되는 실외온도(To)를 미리 정해진 설정온도(Ts;저온의 영하온도)와 비교하여 실외온도(To)가 설정온도(Ts) 이하인가를 판단한다(S130).In the heating operation (YES), the temperature of the outdoor air sucked into the outdoor unit 10, that is, the outdoor air temperature is detected by the outdoor temperature detection unit 110 and output to the control unit 140 (S120), and the control unit 140. Compares the outdoor temperature To input from the outdoor temperature detection unit 110 with a predetermined set temperature Ts (subzero temperature of low temperature) and determines whether the outdoor temperature To is less than or equal to the set temperature Ts (S130). ).

실외온도(To)가 설정온도(Ts)이하가 아니면(NO) 압축기(12) 보호제어가 불필요한 난방표준조건이라고 판단하여 압축기(12)를 정상 기동한다(S180).If the outdoor temperature To is not equal to or lower than the set temperature Ts (NO), the compressor 12 is judged to be an unnecessary heating standard condition and the compressor 12 is normally started (S180).

실외온도(To)가 설정온도(Ts) 이하이면(YES) 실외기(10) 전원 인가 후 일정시간이 경과하였는지를 판단하여(S140), 일정시간을 경과하면(YES) 압축기(12) 보호제어를 위한 운전대기시간이 경과하였다고 판단하여 압축기(12)를 정상 기동한다(S180).If the outdoor temperature To is less than or equal to the set temperature Ts (YES), it is determined whether a predetermined time has elapsed after the power supply of the outdoor unit 10 is applied (S140). It is determined that the operation waiting time has elapsed, and the compressor 12 is normally started (S180).

일정시간을 경과하지 않으면(NO) 압축기(12) 기동가능영역인지를 판단하기 위한 시스템상의 온도를 고려하기 위해 압축기(12)의 토출배관온도(Tc)를 토출온도감지부(130)에서 감지하고, 실외열교환기(16)의 배관온도(E)를 실외배관온도감지부(120)에서 감지하여 제어부(140)에 출력한다.If a certain time has not passed (NO), the discharge pipe temperature Tc of the compressor 12 is sensed by the discharge temperature detecting unit 130 in order to consider the temperature on the system for determining whether the compressor 12 is operable. The pipe temperature E of the outdoor heat exchanger 16 is detected by the outdoor pipe temperature sensing unit 120 and output to the controller 140.

따라서, 상기 제어부(140)는 온도감지부(120,130)로부터 입력되는 온도센서값을 가지고 압축기(12) 토출온도와 실외열교환기(16) 배관온도차(Tc-E)가 미리 정 해진 기준온도(β;압축기가 냉각되어 냉매가스와 오일이 분리된 상태의 온도범위) 이하인가를 판단한다(S160).Accordingly, the control unit 140 has a temperature sensor value input from the temperature sensing units 120 and 130, and the reference temperature β in which the discharge temperature of the compressor 12 and the pipe temperature difference Tc-E of the outdoor heat exchanger 16 are predetermined. The compressor is cooled to determine whether or not the temperature range of the refrigerant gas and oil is separated) or less (S160).

압축기(12) 토출온도와 실외열교환기(16) 배관온도차(Tc-E)가 기준온도(β) 이하가 아니면(NO) 압축기(12) 보호제어를 위한 기동지연조건이 해제되었다고 판단하여 압축기(12)를 정상 기동한다(S180).If the discharge temperature of the compressor 12 and the pipe temperature difference Tc-E of the outdoor heat exchanger 16 are not lower than or equal to the reference temperature β (NO), it is determined that the start delay condition for the protection of the compressor 12 is released. Normally starting 12) (S180).

압축기(12) 토출온도와 실외열교환기(16) 배관온도차(Tc-E)가 기준온도(β) 이하이면(YES) 압축기(12) 보호제어를 위한 기동지연조건을 모두 만족하므로 압축기(12) 기동을 지연시키고 히터(26;CCH)를 가동하여 압축기(12) 하단을 가열함으로써 오일 유동성, 압축기(12) 바닥온도 등을 운전조건에 맞게 양호하게 만들어 준다.If the discharge temperature of the compressor 12 and the pipe temperature difference Tc-E of the outdoor heat exchanger 16 are equal to or less than the reference temperature β (YES), the compressor 12 satisfies all start delay conditions for the protection control. By delaying the start and operating the heater 26 (CCH) to heat the bottom of the compressor 12, the oil fluidity, the bottom temperature of the compressor 12, and the like are made good for the operating conditions.

이후, 일정시간이 지나면 다시 단계S110의 상위 조건으로 피드백되어 네 가지 조건문(운전모드, 실외온도, 운전대기시간, 시스템의 설정온도)을 다시 판단하며, 네 가지 조건문 중 어느 하나로도 만족하지 않으면 압축기(12) 지연없이 정상 기동이 이루어지도록 하여 불필요하게 소요되는 기동지연시간을 단축할 수 있으므로 소비자 불만을 해소할 수 있고 필요한 때 적절한 냉난방을 원활하게 수행할 수 있도록 해준다.Thereafter, after a certain period of time, it is fed back to the upper condition of step S110 to determine the four conditional statements again (operation mode, outdoor temperature, operation standby time, set temperature of the system), and if none of the four conditional statements is satisfied, the compressor (12) It is possible to shorten unnecessary start delay time by making normal start-up without delay, so that it is possible to solve consumer complaints and to perform proper heating and cooling when necessary.

상기에서 설명한 것은 본 발명에 의한 공기조화기의 운전지연 제어방법을 실시하기 위한 하나의 실시예에 불과한 것으로, 본 발명은 상술한 실시예에 한정되지 않고, 본 발명의 기술적 사상 내에서 당 분야의 통상의 지식을 가진 자에 의하여 여러 가지 변형이 가능함은 물론이다.What has been described above is only one embodiment for implementing the operation delay control method of the air conditioner according to the present invention, the present invention is not limited to the above-described embodiment, it is within the technical spirit of the present invention Various modifications are possible by those skilled in the art.

상기의 설명에서와 같이, 본 발명에 의한 공기조화기의 운전지연 제어방법에 의하면, 압축기의 기동지연조건을 운전모드, 실외온도, 운전대기시간, 시스템 온도 등으로 한정하여 압축기 보호를 위한 기동지연시간을 최적화하여 줄일 수 있다.As described above, according to the operation delay control method of the air conditioner according to the present invention, the start delay condition for protecting the compressor by limiting the start delay condition of the compressor to the operation mode, outdoor temperature, operation standby time, system temperature, etc. This can be reduced by optimizing time.

Claims (5)

압축기 보호를 위한 공기조화기의 운전지연 제어방법에 있어서,In the operation delay control method of the air conditioner for protecting the compressor, 상기 공기조화기의 운전모드가 난방운전인가 판단하고,It is determined whether the operation mode of the air conditioner is heating operation, 난방운전이면 실외온도를 감지하여 미리 정해진 설정온도 이하인가 판단하고,In heating operation, it detects the outdoor temperature and judges whether it is below the predetermined set temperature. 실외온도가 설정온도 이하이면 실외기 전원 인가 후 운전대기시간이 일정시간을 경과하였는가 판단하고,If the outdoor temperature is lower than the set temperature, it is determined whether the standby time has elapsed after the outdoor unit is powered on. 운전대기시간이 일정시간을 경과하지 않으면 압축기 기동가능영역인지를 판단하여 압축기의 기동지연제어를 행하는 것을 특징으로 하는 공기조화기의 운전지연 제어방법.The operation delay control method of the air conditioner, characterized in that the start delay control of the compressor is determined by determining whether the compressor can start the operation region when the operation standby time does not pass a predetermined time. 제 1항에 있어서,The method of claim 1, 상기 압축기 기동가능영역은 압축기 토출온도와 실외열교환기 배관온도차를 산출하여 미리 정해진 기준온도와의 비교결과에 따라 판단하는 것을 특징으로 하는 공기조화기의 운전지연 제어방법.And the compressor startable region is determined based on a comparison result between a predetermined reference temperature by calculating a compressor discharge temperature and an outdoor heat exchanger pipe temperature difference. 제 2항에 있어서,The method of claim 2, 압축기 토출온도와 실외열교환기 배관온도차가 기준온도 이하이면 상기 압축기의 기동지연제어를 행하는 것을 특징으로 하는 공기조화기의 운전지연 제어방법.And a start delay control of the compressor when the difference between the compressor discharge temperature and the outdoor heat exchanger pipe temperature is equal to or less than the reference temperature. 제 1항 또는 제 3항에 있어서,The method according to claim 1 or 3, 상기 압축기의 기동지연제어는 압축기 보호를 위해 압축기 기동을 지연시키면서 히터를 가동하여 압축기를 가열시키는 것을 특징으로 하는 공기조화기의 운전지연 제어방법.The start delay control method of the compressor is a delay control method for the operation of the air conditioner operation delay control method, characterized in that for heating the compressor by operating the heater while delaying the compressor start. 제 1항에 있어서,The method of claim 1, 상기 판단조건에서 공기조화기의 운전모드가 난방운전이 아니고 실외온도가 설정온도 이하가 아니며, 운전대기시간이 일정시간을 경과하거나 압축기 기동가능영역이면 기동지연없이 압축기를 정상 기동하는 것을 특징으로 하는 공기조화기의 운전지연 제어방법.If the operation mode of the air conditioner is not the heating operation under the determination condition and the outdoor temperature is not below the set temperature, and the operation standby time has elapsed for a predetermined time or the compressor can start the region, it is characterized in that the compressor is started normally without start delay. Operation delay control method of air conditioner.
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