KR950006161B1 - Method detecting emiting cold materials of compressor in airconditioner - Google Patents
Method detecting emiting cold materials of compressor in airconditioner Download PDFInfo
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- KR950006161B1 KR950006161B1 KR1019920002546A KR920002546A KR950006161B1 KR 950006161 B1 KR950006161 B1 KR 950006161B1 KR 1019920002546 A KR1019920002546 A KR 1019920002546A KR 920002546 A KR920002546 A KR 920002546A KR 950006161 B1 KR950006161 B1 KR 950006161B1
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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
- 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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
- F24F2110/22—Humidity of the outside air
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 발명에 적용되는 공기조화기의 제어 블럭도.1 is a control block diagram of an air conditioner applied to the present invention.
제2도는 본 발명에 적용되는 압축기 냉매량 누설감지방법의 제어 흐름도.2 is a control flowchart of a method for detecting a refrigerant refrigerant amount leak applied to the present invention.
제3도는 본 발명에 이용되는 압축기 운전주파수와 압축기 입력 전류와의 관계를 도시한 그래프.3 is a graph showing the relationship between the compressor operating frequency and the compressor input current used in the present invention.
제4도는 본 발명에 이용되는 압축기 입력전류와 냉방능력과의 관계를 도시한 그래프.4 is a graph showing the relationship between the compressor input current and the cooling capacity used in the present invention.
제5a, b, c도는 주위환경변화에 따른 압축기 입력전류와의 관계를 도시한 그래프.5a, b, and c are graphs showing the relationship with the compressor input current according to the change of the surrounding environment.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 운전명령입력부 2 : 실내온도감지부1: operation command input unit 2: room temperature detection unit
3 : 실내습도검지부 4 : 실내기마이콤3: indoor humidity detection unit 4: indoor device microcomputer
5 : 표시부 6 : 실내송풍모타5: Display unit 6: Indoor blowing motor
8 : 실외온도감지부 9 : 실외습도감지부8: outdoor temperature sensor 9: outdoor humidity sensor
10 : 실외기마이콤 11 : 실외송풍모타10: outdoor unit microcom 11: outdoor air blowing motor
12 : 압축기 13 : 인버터구동부12 compressor 13 inverter drive unit
14 : 직류변환부 16, 17 : 실내외송신부14 DC conversion unit 16, 17 indoor and outdoor transmission unit
18 : 전류검지부18: current detector
본 발명은 공기조화기의 압축기 냉매량 누설감지방법에 관한 것으로, 특히 공기조화기에서 실내 및 실외의 온도, 습도, 풍량 뿐만 아니라 압축기의 운전주파수 및 소비전류등을 비교판단함으로서 압축기의 냉매의 누설여부를 감지하도록 한 공기조화기의 압축기 냉매량 누설감지방법에 관한 것이다.The present invention relates to a leak detection method of the compressor refrigerant amount of the air conditioner, in particular, whether the leakage of refrigerant of the compressor by comparing the operating frequency and current consumption of the compressor as well as the temperature, humidity, air volume of the indoor and outdoor in the air conditioner The present invention relates to a leak detection method of a refrigerant amount of a compressor of an air conditioner.
일반적으로 공기조화기는 냉매가 흐르는 냉매관이 주위와의 열교환을 하게 되는 열교환기와의 용접으로 배관되어 있음으로 열교환기와 냉매관간에 용접이 불량일 경우에는 충전되어 있던 냉매가 사용중에 누설되는 경우가 발생됨으로서 냉방효율을 저하하는 물론 압축기의 공운전을 유발시켜 압축기코일을 과열ㆍ소손시켜 공기조화기의 고장을 유발시키는 문제점이 있다.In general, the air conditioner is connected to the heat exchanger through which the refrigerant pipe through which the refrigerant flows exchanges heat with the surroundings. When the welding is poor between the heat exchanger and the refrigerant pipe, the charged refrigerant may leak during use. As a result, there is a problem of lowering the cooling efficiency, causing the compressor to be idle, causing the compressor coil to be overheated and burned out, thereby causing a breakdown of the air conditioner.
따라서 종래에는 상기 압축기의 냉매누설을 감지하기 위한 방법으로 압축기 내부에 과부하보호장치를 내장하여, 냉매누설로 인해 압축기가 공운전할때 야기되는 과부하로부터 압축기를 보호해줌으로써 냉매누설상태를 간접적으로 감지하여 왔으나, 상기와 같은 과부하보호장치로는 압축기의 과부하가 걸릴때까지는 냉매누설상태를 감지하지 못할 뿐만 아니라 사용중에 냉매누설로 인한 냉방효율이 저하되는 것을 감지하지 못하는 문제점을 가지게 되었다.Therefore, in the related art, an overload protection device is built in the compressor as a method for detecting the refrigerant leakage of the compressor, thereby indirectly detecting the refrigerant leakage state by protecting the compressor from an overload caused when the compressor is idle due to the refrigerant leakage. However, the overload protection device as described above does not detect the refrigerant leakage state until the compressor is overloaded, and also has a problem that the cooling efficiency due to the refrigerant leakage is lowered during use.
이와 같은 문제점을 해소하기 위하여 본 발명의 공기조화기의 압축기 냉매량 누설 감지방법에서는 압축기의 입력전류와 현재의 실내ㆍ외온도, 습도 및 실내ㆍ외송풍량에 의한 주변상황을 감안한 운전입력전류를 비교하여 그 비교차가 현저히 작은 것으로 감지되면 냉매량이 감소되어 있음을 판단하여 압축기의 냉매량감소로 인하여 야기될 수 있는 냉방효율저하, 압축기의 공운전등을 방지하는 공기조화기의 압축기 냉매량 누설감지 방법을 제공하는데 그 목적이 있다.In order to solve such a problem, in the compressor refrigerant leakage detection method of the air conditioner of the present invention, the input current of the compressor is compared with the operating input current considering the ambient conditions caused by the current indoor / outdoor temperature, humidity, and indoor / outdoor air flow. When it is detected that the difference is remarkably small, it is determined that the amount of refrigerant is reduced, thereby providing a method of detecting the amount of refrigerant refrigerant leakage in the air conditioner which prevents cooling efficiency degradation and compressor running due to a decrease in refrigerant amount of the compressor. The purpose is.
상기의 목적을 실현하기 위하여 본 발명의 공기조화기의 압축기 냉매량 누설감지 방법에서는 실내기와 실외기의 송풍모타 및 압축기를 운전시켜 공조를 수행하며, 공조기능을 수행하는 중에 실내 및 실외의 온도와 습도를 감지하여 감지된 온도와 설정온도와의 차를 산출하여 이에 따라 압축기 및 실내의 송풍모타의 구동속도를 제어하는 공기조화기에 있어서, 상기 실내기 및 실외기의 송풍모타 및 압축기의 운전상황에서 전류검지부에 의하여 전원전압단에서 압축기로 공급되는 전류를 검지하는 압축기 입력전류 검지단계, 현재 주위환경변화에 따른 압축기의 정격전류를 산출하는 압축기 운전정격전류산출단계, 상기 압축기운전정격전류산출단계에서 산출된 운전전류를 상기 압축기 입력전류 검지단계에서 검지된 전류와 비교하여 하한전류치 이하인가를 판단하는 운전입력전류치 판단단계, 상기 운전입력전류치 판단단계에서 판단된 압축기 냉매량의 상태를 표시하는 냉매량 표시단계로 이루어진 것이다.In order to realize the above object, in the refrigerant refrigerant leakage detection method of the air conditioner of the present invention, the air conditioning motor and the compressor of the indoor unit and the outdoor unit are operated to perform air conditioning, and the temperature and humidity of the indoor and outdoor during the air conditioning function are performed. In the air conditioner that detects the difference between the detected temperature and the set temperature and controls the driving speed of the compressor and the blower motor in the room, the current detector in the operating conditions of the blower motor and the compressor of the indoor unit and the outdoor unit. Compressor input current detection step of detecting the current supplied to the compressor from the power supply voltage stage, the compressor operation rated current calculation step of calculating the rated current of the compressor according to the current ambient environment change, the operation current calculated in the compressor operation rated current calculation step Is compared with the current detected in the compressor input current detection step, The operation input current value determination step of determining the load, the refrigerant amount display step of displaying the state of the compressor refrigerant amount determined in the operation input current value determination step.
이하, 첨부된 도면에 의거 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
제1도는 본 발명에 따른 공기조화기의 제어블럭도로서, 공기조화기의 운전명령을 입력시키는 운전명령입력부(1), 실내온도를 검지하는 실내온도검지부(2), 실내습도를 검지하는 실내습도검지부(3), 상기 입력단으로 입력되는 신호를 소정의 프로그램에 의하여 제어하게 되는 실내기마이콤(4), 상기 실내기마이콤(4)에서 제어된 신호를 표시하는 표시부(5), 상기 실내기마이콤(4)에서 제어된 신호로 실내로 조화된 공기를 송풍시키는 실내 송풍모타(6)로 구성된 실내기(7), 실외온도를 검지하는 실외온도검지부(8), 실외습도를 검지하는 실외습도검지부(9), 상기 실외온도, 습도검지부(8) (9)에서 검지되어 입력되는 신호를 소정의 프로그램에 의하여 제어하여 제어된 신호를 출력시키는 실외기마이콤(10), 상기 실외기마이콤(10)에서 출력되는 제어신호에 의하여 구동하면서 실외로 조화된 공기를 송풍시키는 실외송풍모타(11), 상기 실외기마이콤(10)에서 출력되는 제어신호를 받아 압축기(12)를 인버터구동시키는 인버터 구동부(13), 교류를 직류로 변환하여 상기 인버터구동부(13)에 공급하는 교류직류변환부(14)로 구성되는 실외기(15), 상기 실내기마이콤(4)과 실외기마이콤(10)과의 신호를 송수신시키는 실내외 송수신부(16) (17)로 구성된 공기조화기에 있어서, 상기 실외기(15)의 실외기 마이콤(10)에 전원전압의 전류를 검지하는 전류감지부(18)를 접속하여서 된 것이다.1 is a control block diagram of an air conditioner according to the present invention, an operation command input unit 1 for inputting an operation command of an air conditioner, an indoor temperature detection unit 2 for detecting an indoor temperature, and an indoor humidity detection unit A humidity sensor 3, an indoor microcomputer 4 for controlling a signal input to the input terminal by a predetermined program, a display unit 5 for displaying a signal controlled by the indoor microcomputer 4, and the indoor microcomputer 4 Indoor unit (7) consisting of an indoor blower motor (6) for blowing the air harmonized into the room with a signal controlled by the indoor, an outdoor temperature detector (8) for detecting the outdoor temperature, an outdoor humidity detector (9) for detecting the outdoor humidity And an outdoor unit microcom 10 for controlling a signal detected and inputted by the outdoor temperature and humidity detecting unit 8 and 9 by a predetermined program and outputting a controlled signal, and a control signal output from the outdoor unit microcom 10. By The outdoor blower motor 11 which blows air harmonized to the outside while moving, the inverter drive unit 13 which drives the compressor 12 by receiving the control signal output from the outdoor device microcomputer 10, and converts AC into direct current. An outdoor unit 15 including an AC direct current converting unit 14 supplied to the inverter driver 13, an indoor / outdoor transmitting / receiving unit 16 for transmitting and receiving signals between the indoor unit microcomb 4 and the outdoor unit microcomb 10. In the air conditioner composed of the above, the current sensing unit 18 for detecting the current of the power supply voltage is connected to the outdoor unit microcomputer 10 of the outdoor unit 15.
제2도는 본 발명에 따른 압축기냉매량 누설감지방법에 대한 제어 흐름도로서, 초기화상태에서 소정의 운전조건을 설정하는 운전조건설정단계(200), 상기 운전조건이 설정된 상태에서 운전상태를 판별하는 운전상태판별단계(201), 운전상태이면 마이콤의 제어신호에 의하여 실내ㆍ외 송풍모터운전 압축기운전을 시키는 실내ㆍ외 송풍모타, 압축기운전단계(202), 상기 실내ㆍ외송풍모타, 압축기운전단계(202)에서 실내ㆍ외온도, 습도감지부로 실내외 온도 및 습도를 읽어드리는 온도, 습도 감지단계(203), 상기 온도, 습도 감지단계(203)에서 감지된 온도와 설정된 온도와의 편차를 산출하는 온도차 산출단계(204), 상기 온도차 산출단계(204)에서 산출된 온도편차에 따른 압축기, 실내외 송풍모타의 속도를 제어 구동하는 실내외송풍모타 압축기속도제어단계(205)로 제어하도록 된 공기 조화기에 있어서, 상기 실내외 송풍모타 압축기 속도제어단계(205)에서 전류검지부로 압축기 입력전류를 읽어들이는 압축기입력전류검지단계(206), 현재 주위환경조건변화에 따른 압축기의 정격전류를 산출하는 압축기 운전정격전류산출단계(207), 상기 압축기 운전정격전류산출단계(207)에서 산출된 운전전류치가 상기 압축기 입력전류검지단계(200)에서 검지된 전류에 비하여 하한전류치이하인가를 판단하는 운전입력전류치 판단단계(208), 상기 운전입력전류치판단단계(208)에서 판단된 상태로 압축기냉매량의 상태를 표시단계(209) (210)로 제어되도록 한 것이다.2 is a control flowchart of a method for detecting a refrigerant refrigerant leakage according to the present invention, the operation condition setting step 200 of setting a predetermined operation condition in an initialization state, and an operation state of determining an operation state in a state in which the operation condition is set. Determination step 201, the indoor and outdoor air blowing motor, the compressor operation step 202, the indoor and outdoor air blowing motor, and the compressor operation step 202, which causes the indoor and outdoor air blowing motor driving compressor operation according to the control signal of the microcomputer in the operation state. Calculate the temperature difference reading the indoor and outdoor temperature and humidity to the indoor / outdoor temperature, humidity sensing unit, the temperature detection step 203, the temperature difference in the humidity and the temperature detected in the humidity detection step (203) and the set temperature Step 204, the indoor and outdoor air blowing motor compressor speed control step 205 of controlling the speed of the compressor, the indoor and outdoor air blowing motor according to the temperature deviation calculated in the temperature difference calculating step 204 In the air conditioner to be controlled, the compressor input current detection step 206 of reading the compressor input current into the current detection unit in the indoor and outdoor air blow motor compressor speed control step 205, the rated current of the compressor according to the current ambient environmental conditions change It is determined whether the operation current value calculated in the compressor operation rated current calculation step 207 and the operation current value calculated in the compressor operation rated current calculation step 207 is lower than the lower limit current value compared to the current detected in the compressor input current detection step 200. In the operation input current value determination step 208, and the operation input current value determination step 208, the state of the compressor refrigerant amount is controlled by the display steps 209 and 210.
제3도는 본 발명에 이용되는 압축기 운전주파수와 운전입력전류와의 관계를 나타낸 것으로, 즉 압축기의 운전주파수가 증가할수록 압축기 운전입력전류가 증가하는 운전주파수와 운전입력전류와는 비례관계임을 보인 것이다.3 shows the relationship between the compressor operation frequency and the operation input current used in the present invention, that is, it shows that the compressor operation input current increases as the operation frequency of the compressor increases. .
제4도는 본 발명에 이용되는 압축기의 운전입력전류와 냉방능력과의 관계를 나타낸 것으로, 압축기의 운전입력전류가 증가할수록 냉방능력도 증가하는 압축기 운전입력전류와 냉방능력과의 비례관계임을 보인 것이다.Figure 4 shows the relationship between the operating input current and the cooling capacity of the compressor used in the present invention, it shows that the proportion of the compressor operating input current and the cooling capacity increases as the operating input current of the compressor increases. .
제5도는 본 발명에 이용되는 주변환경변화에 따른 압축기 입력 전류와의 관계를 보인 것으로, (a)는 실내외 온도에 대해 압축기 입력전류와의 관계로 보인 것이며, 즉, 실내ㆍ외온도가 상승할수록 압축기 입력전류도 증가함을 보인 것이고, (b)는 실내외 송풍모터의 송풍량에 대해 압축기 입력전류와의 관계를 보인 것이며, (c)는 실내외 습도에 대해 압축기 입력전류와의 관계를 보인 것으로, 상기 실내외 송풍량과 실내외습도는 압축기 입력전류와의 반비례 관계를 보여주고 있다.Figure 5 shows the relationship between the compressor input current according to the change of the surrounding environment used in the present invention, (a) is shown as the relationship with the compressor input current for the indoor and outdoor temperature, that is, as the indoor and outdoor temperature increases Compressor input current is also shown to increase, (b) shows the relationship with the compressor input current for the blowing amount of the indoor and outdoor blower motor, (c) shows the relationship with the compressor input current for the indoor and outdoor humidity, Indoor / outdoor airflow and indoor / outdoor humidity show an inverse relationship with the compressor input current.
상기와 같이 구성되는 본 발명에 따른 압축기냉매량 누설감지방법의 상세한 동작 흐름을 제2도에 의거하여 설명하면 다음과 같다.Referring to the detailed operation flow of the compressor refrigerant amount leakage detection method according to the present invention configured as described above with reference to FIG.
공기조화기에 전원을 인가시키고, 초기화시킨 상태에서 실내기(7)의 운전명령입력부(1)로 공기조화기를 운전하고자 하는 상태로 온도, 습도, 풍량등을 설정하게 되면 실내기 마이콤(4)에서는 입력되는 온도, 습도, 풍량에 대한 신호를 받아 운전설정을 하는 운전설정단계(200)를 수행하고, 상기 단계 수행후에 운전명령이 입력되었는가를 판단하는 운전상태판별단계(201)를 수행하고나서, 운전명령이 입력되었으면 실내기마이콤(4)에서는 상기 운전명령입력부(1)에서 입력된 설정신호를 소정의 프로그램으로 제어하여 표시부(5)로 표시함과 아울러, 실내 송풍모타(6)를 제어하여 실내송풍을 제어하여 실내송풍을 제어된 상태로 함과 아울러, 실내외송수신부(16) (17)을 통해서 실외기(15)의 실외기 마이콤(10)에 입력시켜 실외기마이콤(10)을 제어하게 됨으로서, 실외기마이콤(10)에서는 실외송풍모타(11)와 인버터구동부(13)를 통해서 압축기(12)를 설정된 운전상태로 각각 운전시키게 되는 실내외 송풍모타 압축기운전단계(202)를 수행한다.When power is supplied to the air conditioner and the temperature, humidity, air volume, etc. are set in a state where the air conditioner is to be operated by the operation command input unit 1 of the indoor unit 7 while being initialized, the indoor unit is input by the microcomputer 4. After performing the operation setting step 200 for setting the operation by receiving a signal for temperature, humidity, and air volume, and after performing the operation state determination step 201 determining whether the operation command is input after performing the operation command, the operation command When the input is input, the indoor unit microcomputer 4 controls the setting signal input from the operation command input unit 1 with a predetermined program, displays it on the display unit 5, and controls the indoor blowing motor 6 to control the indoor blowing. By controlling the indoor blower to be in a controlled state, and by inputting to the outdoor unit microcomputer 10 of the outdoor unit 15 through the indoor and outdoor air receiver 16, 17, thereby controlling the outdoor unit microcomputer 10, Air microcomputer 10 performs the outdoor blower motor 11 and the inverter driver (13) driving both indoor and outdoor blower motor compressor thereby each driving a compressor (12) to the set operating state via the step 202.
이와 같이 실외기 송풍모타(6) (11), 압축기(12)가 운전함에 따라 실내온도차가 발생되게 되는데, 상기 실내기 마이콤(4)과 실외기 마이콤(10) 각각에서는 실내외온도감지부(2) (8), 실내외 습도감지부(3) (9)로부터 실내외 온도 및 습도를 입력받고, 실내기마이콤(4)에서는 상기 설정온도와 실내온도감지부(2)에서 감지된 온도와 차를 연산하여 산출 제어하는 온도차산출단계(204)를 수행하며, 상기 산출제어된 신호에 따른 실내송풍모타(6)의 속도를 제어구동시켜 송풍량을 조절함과 아울러 상기 산출 제어된 신호는 실내외 송수신부(16) (17)를 통해 실외기마이콤(10)을 제어하여 실외송풍모타(11)와 압축기(12)의 회전속도를 제어함으로서 설정된 상태로 공기조화기를 운전시키는 실내외 송풍모타 압축기속도제어단계(205)를 수행한다.As the outdoor unit blower motors 6 and 11 and the compressor 12 operate as described above, an indoor temperature difference is generated. In each of the indoor unit microcomputer 4 and the outdoor unit microcomputer 10, the indoor / outdoor temperature sensing unit 2 and 8 ), And receives the indoor and outdoor temperature and humidity from the indoor and outdoor humidity detection unit (3) (9), the indoor microcomputer (4) calculates and controls the calculated temperature and the difference between the set temperature and the indoor temperature detection unit (2) The temperature difference calculation step 204 is performed, and the air volume is adjusted by controlling and controlling the speed of the indoor air blowing motor 6 according to the calculated and controlled signal, and the calculated and controlled signal is transmitted to the indoor / outdoor transmitting / receiving unit 16 (17). By controlling the outdoor unit microcomputer 10 through the control of the rotational speed of the outdoor blower motor 11 and the compressor 12 performs the indoor and outdoor blower motor compressor speed control step 205 of operating the air conditioner in the set state.
상기와 같이 운전하고 있는 상태에서 마이콤(4)에서는 실외기마이콤(10)을 통해서 전류검지부(18)로부터 전원전압단의 입력전류를 검지하는 압축기 입력전류검지단계(206)를 수행하게 되는데, 즉 전원전압단으로부터 입력전류가 상기 압축기(12)의 구동전류와 동일하므로 상기 전류검지부(18)에서는 전원전압으로부터 입력전류를 검지하게 되는 것이다.In the state of operation as described above, the microcomputer 4 performs the compressor input current detection step 206 of detecting the input current of the power voltage terminal from the current detector 18 through the outdoor unit microcom 10, that is, the power source. Since the input current from the voltage stage is the same as the drive current of the compressor 12, the current detection unit 18 detects the input current from the power supply voltage.
이어서 마이콤(4)에서는 상기 실내외온도검지부(2) (8), 실내외습도검지부(3) (9)으로부터 검지된 신호에 따른 상기 압축기(12)의 운전정격입력전류를 산출하게 되는 압축기 운전정격전류산출단계(207)를 수행하고나서, 상기 마이콤(4)에서는 압축기 운전정격전류산출단계(207)에서 산출된 압축기정격전류, 상기 압축기 입력전류검지단계(206)에서 전류 검지부(18)로 검지된 전류와를 비교판단하게 되는 운전입력전류치 판단단계(208)를 수행한다. 이때 상기 검지부로부터 검지된 신호에 따른 압축기 입력전류가 상기 압축기 운전정격전류산출단계(207)에서 산출된 압축기 운전정격전류와 현격한 차이로 상기 압축기 입력전류가 하한치이하로 판단되면 마이콤(4)에서는 압축기(12)의 냉매량이 누설되어 있음을 표시해주어 사용자에게 압축기(12)의 냉매가 누설되어 있음을 알려주게 되는 표시단계(209)를 수행하고, 상기 운전입력전류치판단단계(208)에서 비교판단된 압축기 입력전류가 하한치이상이면 정상운전상태임을 표시해주는 표시단계(210)를 수행하게 되는 것이다.Subsequently, the microcomputer 4 calculates the rated operating current of the compressor 12 according to the signals detected from the indoor / outdoor temperature detection units 2 and 8 and the indoor and outdoor humidity detection units 3 and 9. After performing the calculation step 207, the microcomputer 4 detects the compressor rated current calculated in the compressor operation rated current calculation step 207, and the current detection unit 18 in the compressor input current detection step 206. The operation input current value determination step 208 is performed to compare the current with the current. At this time, if the compressor input current according to the signal detected from the detector is significantly different from the compressor operation rated current calculated in the compressor operation rated current calculation step 207, the compressor input current is determined to be lower than or equal to the lower limit. A display step 209 for indicating that the refrigerant amount of the compressor 12 is leaked to inform the user that the refrigerant of the compressor 12 is leaked is performed, and the comparison judgment is made in the operation input current value determination step 208. If the compressor input current is higher than the lower limit value, the display step 210 for indicating the normal operation state is performed.
이상에서 설명한 바와 같이 본 발명은 운전설정된 상태로 운전하고 공기조화기에서 압력기의 운전입력전류를 전류검지부로 검지하고, 이어서 주위환경변화에 따른 압축기의 정격입력전류와 비교하여 이 비교된 압축기의 운전입력전류가 소정의 하한전류치 이하로 되게되면 압축기의 냉매량이 누설됨을 표시하여 알려주도록 함으로써, 압축기의 냉매누설로 인하여 야기될 수 있는 냉방효율저하 및 심지어는 과열로 인한 소손되는 문제점을 해소할 수 있는 효과를 제공하게 되는 것이다.As described above, the present invention operates in an operation-set state and detects the operation input current of the pressure regulator in the air conditioner with a current detection unit, and then compares the rated input current of the compressor with the change of the surrounding environment to compare the When the operating input current falls below a predetermined lower limit current value, the indicator indicates that the refrigerant amount is leaked, thereby reducing the cooling efficiency that may be caused by the refrigerant leakage of the compressor and even the burnout caused by overheating. It will provide an effect.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019920002546A KR950006161B1 (en) | 1992-02-20 | 1992-02-20 | Method detecting emiting cold materials of compressor in airconditioner |
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| KR1019920002546A KR950006161B1 (en) | 1992-02-20 | 1992-02-20 | Method detecting emiting cold materials of compressor in airconditioner |
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| CN106595152A (en) * | 2016-10-25 | 2017-04-26 | 珠海格力电器股份有限公司 | Method and device for determining abnormal circulation of air conditioner refrigerant and air conditioner |
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| KR100434386B1 (en) * | 1996-06-28 | 2004-07-19 | 엘지전자 주식회사 | Operation control method of air conditioner via sensing of refrigerant leakage for preventing burn of compressor caused by overheating of compressor |
| KR100667977B1 (en) * | 2000-01-21 | 2007-01-15 | 주식회사 엘지이아이 | Expansion valve control device and method of inverter air conditioner |
| KR101676921B1 (en) * | 2014-11-12 | 2016-11-16 | 엘지전자 주식회사 | An air conditioning system and a method for controlling the same |
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| CN106595152A (en) * | 2016-10-25 | 2017-04-26 | 珠海格力电器股份有限公司 | Method and device for determining abnormal circulation of air conditioner refrigerant and air conditioner |
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St.27 status event code: A-5-5-R10-R18-oth-X000 |
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| P22-X000 | Classification modified |
St.27 status event code: A-4-4-P10-P22-nap-X000 |
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| P22-X000 | Classification modified |
St.27 status event code: A-4-4-P10-P22-nap-X000 |