KR100302858B1 - Method for controlling electronic expansion valve of multi inverter airconditioner - Google Patents

Method for controlling electronic expansion valve of multi inverter airconditioner Download PDF

Info

Publication number
KR100302858B1
KR100302858B1 KR1019980047225A KR19980047225A KR100302858B1 KR 100302858 B1 KR100302858 B1 KR 100302858B1 KR 1019980047225 A KR1019980047225 A KR 1019980047225A KR 19980047225 A KR19980047225 A KR 19980047225A KR 100302858 B1 KR100302858 B1 KR 100302858B1
Authority
KR
South Korea
Prior art keywords
expansion valve
refrigerant
electronic expansion
compressor
opening
Prior art date
Application number
KR1019980047225A
Other languages
Korean (ko)
Other versions
KR20000031275A (en
Inventor
김영찬
Original Assignee
황한규
만도공조 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 황한규, 만도공조 주식회사 filed Critical 황한규
Priority to KR1019980047225A priority Critical patent/KR100302858B1/en
Publication of KR20000031275A publication Critical patent/KR20000031275A/en
Application granted granted Critical
Publication of KR100302858B1 publication Critical patent/KR100302858B1/en

Links

Classifications

    • 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
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • 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
    • F25B41/00Fluid-circulation arrangements
    • F25B41/30Expansion means; Dispositions thereof
    • F25B41/31Expansion valves
    • F25B41/34Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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
    • F25B2600/25Control of valves
    • F25B2600/2513Expansion valves
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

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

Abstract

본 발명은 냉매량을 조절하기 위한 전자팽창밸브를 장시간 사용함에 따라 오차로 인한 절대적인 개도위치를 잃어 버려 각 실내 열교환기로 유입되는 냉매의 량이 변화되는 것을 방지하기 위해 압축기의 운전후 정지시에 전자팽창밸브의 초기위치를 다시 설정하여 다음 압축기 동작시 정확한 개도 위치를 유지할 수 있도록 하는 멀티 에어콘의 전자팽창밸브 제어 방법에 관한 것으로, 본 발명은 마이컴에서 관로를 따라 흐르는 냉매의 온도, 냉매의 유량, 냉매의 압력에 따라 멀티 에어콘의 냉매량을 조절하기 위해 구동부를 통해 전자팽창밸브의 개도량을 제어하는 멀티 에어콘의 전자팽창밸브 제어 방법에 있어서, 마이컴에서 압축기의 운전후 정지되었는가 판단하는 단계와, 압축기가 운전후 정지되었을 때 구동부를 통해 전자팽창밸브를 총개도의 1/5로 개도하여 냉매가 평압되도록 하는 단계와, 냉매를 평압시킨 후 전자팽창밸브를 완전히 폐쇄시켜 기준위치를 찾는 단계와. 기준위치를 찾은 후 전자팽창밸브를 총개도의 1/5로 개도하여 냉매가 평압되도록 하는 단계;로 이루어진 초기화 동작을 더 포함하여 이루어져 최적의 냉동 사이클을 구성하고 시스템 효율을 한층 높일 수 있다는 이점이 있다.The present invention loses the absolute opening position due to errors as the electronic expansion valve for controlling the amount of refrigerant for a long time, the electromagnetic expansion valve at the stop of the compressor after operation to prevent the amount of refrigerant flowing into each indoor heat exchanger to be changed. The present invention relates to a control method of an electronic expansion valve of a multi-air conditioner to maintain an accurate opening position during the next compressor operation by resetting the initial position of the present invention. A method for controlling an electronic expansion valve of a multi-air conditioner for controlling an opening amount of an electronic expansion valve through a driving unit to adjust the amount of refrigerant of the multi-air conditioner according to pressure, the method comprising: determining whether the compressor is stopped after the compressor is operated and the compressor is operated. And when stopped, the electronic expansion valve The step of opening the refrigerant to the pressure level, and after the pressure of the refrigerant to close the electronic expansion valve to find a reference position. Finding a reference position and opening the electronic expansion valve to 1/5 of the total opening to allow the refrigerant to be pressurized; further comprising the initialization operation consisting of an optimal refrigeration cycle and the system can further increase the efficiency have.

Description

멀티 에어콘의 전자팽창밸브 제어 방법{METHOD FOR CONTROLLING ELECTRONIC EXPANSION VALVE OF MULTI INVERTER AIRCONDITIONER}METHOD FOR CONTROLLING ELECTRONIC EXPANSION VALVE OF MULTI INVERTER AIRCONDITIONER}

본 발명은 멀티 에어콘의 전자팽창밸브 제어 방법에 관한 것으로서, 보다 상세하게는 냉매량을 조절하기 위한 전자팽창밸브를 장시간 사용함에 따라 오차로 인한 절대적인 개도위치를 잃어 버려 각 실내 열교환기로 유입되는 냉매의 량이 변화되는 것을 방지하기 위해 압축기의 운전후 정지시에 전자팽창밸브의 초기위치를 다시 설정하여 다음 압축기 동작시 정확한 개도 위치를 유지할 수 있도록 하는 멀티 에어콘의 전자팽창밸브 제어 방법에 관한 것이다.The present invention relates to a control method of an electronic expansion valve of a multi-air conditioner, and more particularly, the amount of refrigerant flowing into each indoor heat exchanger is lost due to an error in the absolute opening position due to an error when using the electronic expansion valve for adjusting the amount of refrigerant. The present invention relates to a control method of an electronic expansion valve of a multi-air conditioner to maintain an accurate opening position during the next compressor operation by resetting the initial position of the electronic expansion valve at the stop of the compressor after operation.

일반적으로, 에어콘은 냉방기의 일종으로서, 모터가 구동되는 응축기로 냉매를 고압으로 압축하여 액화시키고, 이 고압으로 응축된 냉매를 관의 직경이 작은 모세관파이프로 이동시키면서 증발기에서 냉매를 순간적으로 기화시켜 증발시키므로 온도를 강하시켜 냉기를 발생하고, 이때 발생된 냉기를 실내로 토출시키므로 냉방을 수행하게 되는 것이다.In general, an air conditioner is a type of air conditioner that compresses and liquefies a refrigerant at a high pressure with a condenser driven by a motor, and instantly vaporizes the refrigerant in an evaporator while moving the refrigerant condensed at a high pressure into a capillary pipe having a small diameter. By evaporating, the temperature is lowered to generate cold air, and thus cooling is performed by discharging the generated cold air into the room.

그리고, 증발기에서 증발되면서 열을 흡수하면서 기화된 냉매는 압축기에서 응축기로 이동하여 응축되어 액화되면서 열을 외부로 방출하여 상기한 과정을 거쳐지속적으로 냉방을 수행하게 되는 것이다.The refrigerant vaporized while absorbing heat while being evaporated in an evaporator is condensed by moving from a compressor to a condenser and liquefied to release heat to the outside to continuously cool through the above process.

멀티 에어콘(Multi Airconditioner)은 면적이 넓은 지역을 냉방하기 위해 실내열교환기를 복수개를 설치하여 별도로 분리된 지역을 냉방하기 위하여 사용하는 하는 것으로서 룸 에어콘에 많이 사용되는 실정이다.Multi-air conditioner (Multi Air Conditioner) is used to cool a separate area by installing a plurality of indoor heat exchangers to cool a large area is a situation that is widely used in the room air conditioner.

이러한 멀티 에어콘은 실내열교환기 및 팽창밸브등을 복수개를 구비하는 반면에 실외열교환기 및 압축기는 한 개만을 구비하여 사용하고 있다.The multi-air conditioner includes a plurality of indoor heat exchangers and expansion valves, whereas only one outdoor heat exchanger and a compressor are used.

도 1은 일반적인 멀티 에어콘을 나타낸 구성도이고, 도 2는 도 1에 도시된 멀티 에어콘의 전자팽창밸브 제어장치를 나타낸 블록구성도이다.FIG. 1 is a block diagram illustrating a general multi air conditioner, and FIG. 2 is a block diagram showing an electronic expansion valve control apparatus for a multi air conditioner shown in FIG. 1.

이하. 도 1에 도시된 일반적인 멀티 에어콘에 설치된 전자팽창밸브의 제어장치 구성을 도 2을 참조하여 설명하면 다음과 같다.Below. Referring to Figure 2 the control device configuration of the electronic expansion valve installed in the general multi-air conditioner shown in Figure 1 as follows.

여기에 도시된 바와 같이 멀티 에어콘의 전자팽창밸브제어장치의 구성은, 제1,제2액체관(50)(55)의 입구측에 설치되어 제1,제2팽창밸브(20)(25)로 토출되는 냉매의 온도를 측정하는 제1,제2온도감지부(30)(35)와; 제1,제2가스관밸브(80)(85)의 출구측에 설치되어 제1,제2가스관밸브(80)(85)로 토출되는 냉매의 온도를 측정하는 제3,제4온도감지부(90)(95)와; 상기 제1온도감지부(30)의 온도와 제3온도감지부(90)의 제1온도차를 측정하고, 제2온도감지부(35)와 제4온도감지부(95)의 제2온도차를 측정하는 마이컴(110)과; 상기 마이컴(110)에서 측정된 제1,제2온도차를 이용하여 미리 설정된 온도차와 비교하여 크거나 작은 경우 제1,제2 전자팽창밸브(20)(25)의 개폐량을 조절하여 냉매의 온도차를 보정하도록 하는 구동부(120)로 구성된다.As shown here, the configuration of the electronic expansion valve control device of the multi-air conditioner is provided at the inlet side of the first and second liquid pipes 50 and 55, and the first and second expansion valves 20 and 25 are provided. First and second temperature sensing units 30 and 35 for measuring the temperature of the refrigerant discharged to the air; Third and fourth temperature sensing units installed at the outlets of the first and second gas pipe valves 80 and 85 to measure the temperature of the refrigerant discharged to the first and second gas pipe valves 80 and 85 ( 90) 95; The first temperature difference between the temperature of the first temperature detection unit 30 and the third temperature detection unit 90 is measured, and the second temperature difference between the second temperature detection unit 35 and the fourth temperature detection unit 95 is measured. A microcomputer 110 for measuring; The temperature difference of the refrigerant is controlled by adjusting the opening and closing amounts of the first and second electronic expansion valves 20 and 25 when the first and second temperature differences measured by the microcomputer 110 are larger or smaller than the preset temperature difference. It consists of a drive unit 120 to correct.

이때, 상기 제1,제2온도차를 동일하게 설정하는 것이 바람직하나 필요에 따라 제1,제2온도차이를 다르게 하여 제1,제2실내열교환기(60)(65)가 설치되는 상황에 따라 가변시키는 것도 가능하다.In this case, it is preferable to set the first and second temperature differences to be the same, but according to the situation in which the first and second indoor heat exchangers 60 and 65 are installed with different first and second temperature differences as necessary. It is also possible to vary.

그리고, 상기 마이컴(100)는 제1,제2온도차를 사용자가 원하는 바대로 조절하여 설정할 수 있는 온도차설정부(130)를 부설시키도록 한다.In addition, the microcomputer 100 installs a temperature difference setting unit 130 that can adjust and set the first and second temperature differences as desired by the user.

이와 같이 이루어진 멀티 에어콘의 전자팽창밸브장치를 갖는 멀티 에어콘의 작동 상태를 도 1에 의거하여 살펴 보면, 실외열교환기(10)에서 냉매를 소정의 압력을 응축 하여 액체화시키고, 그 냉매를 관로를 통하여 이동하다가 제1,제2 전자팽창밸브(20)(25)에서 급격하게 팽창시키므로 제1,제2액관밸브(40)(45)를 통하여 제1,제2액체관(50)(55)을 따라 이동하게 된다.Referring to FIG. 1, the operating state of the multi-air conditioner having the electronic expansion valve device of the multi-air conditioner as described above is condensed with a predetermined pressure in the outdoor heat exchanger 10 to liquefy a liquid, and the coolant passes through a conduit. The first and second liquid pipes 50 and 55 are moved through the first and second liquid pipe valves 40 and 45 because they rapidly expand in the first and second electromagnetic expansion valves 20 and 25. Move along.

그런 후에 분리된 지역에 각각 설치된 제1,제2실내열교환기(60)(65)에서 기화되면서 외부의 열을 흡수하면서 차거운 바람을 실내로 공급하게 되고, 뜨거운 열을 흡수한 냉매는 제1,제2가스관(70)(75)을 따라 이동하여 제1,제2가스관밸브(80)(85)를 통하여 합쳐진후 압축기(100)로 유입되어 기화된 냉매를 액체 상태로 압축시키게 되고, 재차 실외열교환기(10)에서 응축되어 상기한 경로를 따라 반복적으로 냉방을 수행하는 것이다.Thereafter, the first and second indoor heat exchangers 60 and 65 respectively installed in the separated areas are vaporized and absorb the external heat while supplying cool wind to the room. After moving along the second gas pipes 70 and 75, they are combined through the first and second gas pipe valves 80 and 85 and introduced into the compressor 100 to compress the vaporized refrigerant into a liquid state. Condensation in the heat exchanger 10 is to perform cooling repeatedly along the above-described path.

이와 같이, 관로를 따라 이동되는 냉매의 온도가 각각의 부위에 따라 달라지게 되며, 제1,제2전자팽창밸브(20)(25)로 토출되는 냉매의 온도를 T1,T2라 하고, 이 온도를 제1,제2온도감지부(30)(35)에서 측정하도록 한다.As such, the temperature of the refrigerant moving along the pipe line varies according to each part, and the temperatures of the refrigerant discharged to the first and second electromagnetic expansion valves 20 and 25 are referred to as T 1 , T 2 , The temperature is measured by the first and second temperature sensing units 30 and 35.

그리고, 제1,제2가스관밸브(80)(85)로 토출되는 냉매의 온도를 T3,T4라 하고 이 온도를 제3,제4온도감지부(90)(95)에서 측정하도록 하고, T1-T3의 온도차 변수를 X1,T2-T4의 온도차 변수를 X2라고 정의한 후 이 변수값에 따라 제1,제2팽창밸브를 개폐하므로 냉방성을 향상시키도록 하고 있다.The temperature of the refrigerant discharged to the first and second gas pipe valves 80 and 85 is T 3 and T 4 , and the temperature is measured by the third and fourth temperature sensing units 90 and 95. , The temperature difference variable of T 1 -T 3 is defined as X 1, and the temperature difference variable of T 2 -T 4 is defined as X 2 , and the first and second expansion valves are opened and closed according to the value of the variable to improve cooling performance. .

그러나, 냉매의 온도, 냉매의 유량, 냉매의 압력에 따라 전자팽창밸브를 제어하여 냉매량을 조절할 때 마이콤에서 설정된 값과 실제 개도된 값과의 오차에 의해 밸브의 절대 개도 위치를 읽어버릴 경우 실내 환경에 따라 변화해야하는 전자팽창밸브의 특성상 각 실내 열교환기로 유입되는 냉매량이 변화되어 다실의 냉동 사이클의 효율이 떨어지게 되고 아이싱 및 냉매 압력의 상이한 변화가 발생하게 되어 압축기에 치명적인 손상을 입힐 수 있다는 문제점이 있다.However, when adjusting the amount of refrigerant by controlling the electronic expansion valve according to the temperature of the refrigerant, the flow rate of the refrigerant, and the pressure of the refrigerant, when the absolute opening position of the valve is read due to an error between the value set in the microcomputer and the actually opened value, the indoor environment Due to the characteristics of the electronic expansion valve that needs to be changed, the amount of refrigerant flowing into each indoor heat exchanger is changed, resulting in a decrease in the efficiency of the refrigerating cycle of the tea room and a different change in the icing and the refrigerant pressure, which may cause fatal damage to the compressor. .

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위해 창작된 것으로서, 본 발명의 목적은 전자팽창밸브의 절대 개도 위치의 이탈을 방지하기 위해 압축기 운전후 정지시에는 항상 초기화 동작을 수행하여 다음 압축기 작동시 자기의 위치를 정확하게 찾아가도록 하는 멀티 에어콘의 전자팽창밸브 제어 방법을 제공함에 있다.Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to always perform an initialization operation when the compressor is stopped after the compressor operation to prevent deviation of the absolute opening position of the electromagnetic expansion valve. The present invention provides a control method of an electronic expansion valve of a multi-air conditioner to accurately find the position of a magnetic field.

도 1은 일반적인 멀티 에어콘을 간략하게 나타낸 구성도이다.1 is a configuration diagram briefly showing a general multi-air conditioner.

도 2는 도 1에 도시된 멀티 에어콘의 전자팽창밸브 제어장치를 나타낸 블록구성도이다.FIG. 2 is a block diagram illustrating an electronic expansion valve control apparatus for a multi-air conditioner illustrated in FIG. 1.

도 3은 본 발명에 의한 멀티 에어콘의 전자팽창밸브 제어 방법을 순차적으로 도시한 흐름도이다.3 is a flowchart sequentially illustrating a method for controlling an electronic expansion valve of a multi-air conditioner according to the present invention.

- 도면의 주요부분에 대한 부호의 설명 --Explanation of symbols for the main parts of the drawings-

10 : 실외열교환기 20,25 : 제1,제2전자팽창밸브10: outdoor heat exchanger 20, 25: first and second electromagnetic expansion valve

30,35 : 제1,제2온도감지부 40,45 : 제1,제2액관밸브30,35: 1st, 2nd temperature sensing part 40, 45: 1st, 2nd liquid pipe valve

50,55 : 제1,제2액체관 60,65 : 제1,제2실내열교환기50,55: 1st, 2nd liquid pipe 60,65: 1st, 2nd room heat exchanger

70,75 : 제1,제2가스관 80,85 : 제1,제2가스관밸브70, 75: 1st, 2nd gas pipe 80,85: 1st, 2nd gas pipe valve

90,95 : 제3,제4온도감지부 100 : 압축기90,95: third and fourth temperature detection unit 100: compressor

110 : 마이컴 120 : 구동부110: microcomputer 120: drive unit

상기와 같은 목적을 실현하기 위한 본 발명은 마이컴에서 관로를 따라 흐르는 냉매의 온도, 냉매의 유량, 냉매의 압력에 따라 멀티 에어콘의 냉매량을 조절하기 위해 구동부를 통해 전자팽창밸브의 개도량을 제어하는 멀티 에어콘의 전자팽창밸브 제어 방법에 있어서, 마이컴에서 압축기의 운전후 정지되었는가 판단하는 단계와, 압축기가 운전후 정지되었을 때 구동부를 통해 전자팽창밸브를 총개도의 1/5로 개도하여 냉매가 평압되도록 하는 단계와, 냉매를 평압시킨 후 전자팽창밸브를 완전히 폐쇄시켜 기준위치를 찾는 단계와. 기준위치를 찾은 후 전자팽창밸브를 총개도의 1/5로 개도하여 냉매가 평압되도록 하는 단계;로 이루어진 초기화 동작을 더 포함하여 이루어진 것을 특징으로 한다.The present invention for realizing the above object is to control the opening amount of the electronic expansion valve through the drive to adjust the amount of refrigerant of the multi-air conditioner according to the temperature of the refrigerant flowing along the pipe in the microcomputer, the flow rate of the refrigerant, the pressure of the refrigerant In the control method of an electronic expansion valve of a multi-air conditioner, the microcomputer determines whether the compressor is stopped after the operation of the compressor, and when the compressor is stopped after the operation, opens the electromagnetic expansion valve to 1/5 of the total opening by the drive unit. And a step of finding a reference position by closing the refrigerant and then completely closing the electromagnetic expansion valve. And opening the electronic expansion valve to 1/5 of the total opening after finding the reference position, thereby allowing the refrigerant to be pressurized.

위와 같이 멀티 에어콘의 전자팽창밸브를 압축기 운전이후 정지시 초기화 동작을 수행하도록 함으로써 전자팽창밸브의 작동시 발생되는 오차를 최대한 줄일 수 있게 된다.As described above, by performing the initialization operation when the electronic expansion valve of the multi-air conditioner stops after the compressor operation, it is possible to reduce the error generated during the operation of the electronic expansion valve.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명한다. 또한 본 실시예는 본 발명의 권리범위를 한정하는 것은 아니고, 단지 예시로 제시된 것이다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, this embodiment is not intended to limit the scope of the present invention, but is presented by way of example only.

도 3는 본 발명에 의한 멀티 에어콘의 전자팽창밸브 제어 방법을 순차적으로 나타낸 흐름도이다.3 is a flowchart sequentially illustrating a method for controlling an electronic expansion valve of a multi-air conditioner according to the present invention.

여기에 도시된 바와 같이 먼저 구동부(120)를 통해 제 1 또는 제 2전자팽창밸브(20,25)를 초기 위치에 놓는다(S10). 그리고, 마이컴(110)에서 압축기(100)가 운전을 하는가 비교한다(S20). 이때 압축기(100)가 운전을 하지 않는 상태면 계속해서 제 1또는 제 2전자팽창밸브(20,25)를 초기위치에 놓은 상태를 유지시킨다(S10). 그러나 압축기(100)가 운전을 하는 상태면 제 1내지 제 4온도감지부(30,35,90,95)를 통해 측정한 관로를 따라 흐르는 냉매의 온도와, 냉매의 유량, 냉매의 압력에 따라 마이컴(110)에서 개도량을 결정하고 구동부(120)를 통해 제 1 또는 제 2전자팽창밸브(20,25)의 개도량을 조절하여 냉매량을 조절하게된다(S30).As shown here, the first or second electromagnetic expansion valves 20 and 25 are initially placed through the driving unit 120 (S10). Then, it is compared whether the compressor 100 operates in the microcomputer 110 (S20). At this time, if the compressor 100 is not operating, the first or second electromagnetic expansion valves 20 and 25 are continuously maintained in the initial position (S10). However, when the compressor 100 is in operation, the refrigerant flows along the pipeline measured through the first to fourth temperature sensing units 30, 35, 90, and 95, depending on the refrigerant flow rate and the refrigerant pressure. The opening amount of the microcomputer 110 is determined and the amount of refrigerant is controlled by adjusting the opening amount of the first or second electromagnetic expansion valves 20 and 25 through the driving unit 120 (S30).

그런다음, 압축기(100)의 운전상태를 다시금 비교한다(S40). 이때 계속해서 압축기(100)가 운전되는 상태면 관로를 따라 흐르는 냉매의 상태에 따라 냉매량을 조절하여 실내환경에 따라 조절되도록 하여 냉동 사이클의 효율을 향상시킨다. 그러나, 압축기(100)가 운전되지 않고 정지했을 경우에는 마이컴(110)에서 제 1 또는 제 2전자팽창밸브(20,25)의 절대 개도위치를 잃어버리지 않도록 초기화동작을 진행한다(S50)(S60)(S70). 즉, 마이컴(110)에서 구동부(120)를 통해 제 1 또는 제 2전자팽창밸브(20,25)를 냉매가 평압될 수 있는 최소 개도를 유지하도록 오픈한다(S50). 그런다음 제 1 또는 제 2전자팽창밸브(20,25)를 완전히 닫아 기준위치를 찾아주게 된다(S60). 그런다음, 다시금 구동부(120)를 통해 제 1 또는 제 2전자팽창밸브(20,25)를 열어 냉매가 평압될 수 있도록 최소 개도를 유지시킨다(S70).Then, the operation state of the compressor 100 is again compared (S40). At this time, if the compressor 100 continues to operate, the amount of refrigerant is adjusted according to the state of the refrigerant flowing along the pipeline to be adjusted according to the indoor environment, thereby improving the efficiency of the refrigeration cycle. However, when the compressor 100 is stopped without operation, the initialization operation is performed so that the microcomputer 110 does not lose the absolute opening position of the first or second electromagnetic expansion valves 20 and 25 (S50) (S60). (S70). That is, the microcomputer 110 opens the first or second electromagnetic expansion valves 20 and 25 through the driving unit 120 to maintain the minimum opening degree through which the refrigerant can be pressurized (S50). Then, the first or second electromagnetic expansion valve (20, 25) is completely closed to find a reference position (S60). Then, the first or second electromagnetic expansion valves 20 and 25 are opened again through the driving unit 120 to maintain the minimum opening degree so that the refrigerant can be pressurized (S70).

이때 최소 개도는 총개도의 약1/5 정도의 값으로 설정한다.At this time, the minimum opening degree is set to a value of about 1/5 of the total opening degree.

이렇게 제 1 또는 제 2전자팽창밸브(20,25)의 초기화 동작을 수행함으로써 압축기(100)가 정지한 다음 다시 압축기(100) 운전시 정확한 개도값을 갖을 수 있도록 하여 정확한 냉매량을 조절할 수 있게 한다.By performing the initializing operation of the first or second electromagnetic expansion valve 20, 25 so that the compressor 100 is stopped and then again to have the correct opening value when the compressor 100 is operated, it is possible to adjust the amount of refrigerant. .

이렇게 초기화동작을 마친후 다음 압축기(100) 운전을 위해 제 1 또는 제 2전자팽창밸브(20,25)를 초기위치에 설정하는 위치(S10)로 리턴되어 압축기(100)의 운전에 따라 제 1 또는 제 2전자팽창밸브(20,25)를 제어하게 된다.After completing the initialization operation, the first or second electromagnetic expansion valves 20 and 25 are returned to the position S10 for setting the first or second electromagnetic expansion valves 20 at the initial positions for the operation of the next compressor 100. Alternatively, the second electromagnetic expansion valves 20 and 25 are controlled.

상기한 바와 같이 본 발명은 멀티 에어콘의 전자팽창밸브를 압축기의 운전후 정지시 초기화 동작을 수행하여 절대 개도위치를 잃어버리지 않도록 하여 장시간을 작동시킬 때도 최적의 냉동 사이클을 구성할 수 있고, 시스템 효율을 한층 높일 수 있다는 이점이 있다.As described above, the present invention performs an initialization operation when the electronic expansion valve of the multi-air conditioner stops after operation of the compressor so that the absolute opening position is not lost so that an optimal refrigeration cycle can be configured even when operating for a long time, and system efficiency There is an advantage that can be further increased.

또한, 전자팽창밸브의 제어시 콘트롤의 오차를 최대한 줄일 수 있어 전자팽창밸브의 구동 신뢰성을 향상시킬 수 있다는 이점이 있다.In addition, the control error of the electronic expansion valve can be reduced as much as possible to increase the driving reliability of the electronic expansion valve.

Claims (1)

마이컴에서 관로를 따라 흐르는 냉매의 온도, 냉매의 유량, 냉매의 압력에 따라 멀티 에어콘의 냉매량을 조절하기 위해 구동부를 통해 전자팽창밸브의 개도량을 제어하는 멀티 에어콘의 전자팽창밸브 제어 방법에 있어서,In the method of controlling the electronic expansion valve of the multi-air conditioner to control the amount of opening of the electronic expansion valve through the drive unit in order to adjust the amount of refrigerant of the multi-air conditioner according to the temperature of the refrigerant flowing along the conduit in the microcomputer, the flow rate of the refrigerant, the pressure of the refrigerant, 마이컴에서 압축기의 운전후 정지되었는가 판단하는 단계와,Determining whether the microcomputer has stopped after the operation of the compressor; 압축기가 운전후 정지되었을 때 구동부를 통해 전자팽창밸브를 총개도의 1/5로 개도하여 냉매가 평압되도록 하는 단계와,Opening the electromagnetic expansion valve to 1/5 of the total opening degree through the driving unit when the compressor is stopped after operation, so that the refrigerant is pressurized; 냉매를 평압시킨 후 전자팽창밸브를 완전히 폐쇄시켜 기준위치를 찾는 단계와.And after closing the refrigerant, closing the electromagnetic expansion valve to find a reference position. 기준위치를 찾은 후 전자팽창밸브를 총개도의 1/5로 개도하여 냉매가 평압되도록 하는 단계;로 이루어진 초기화 동작을Finding the reference position and opening the electronic expansion valve to 1/5 of the total opening so that the refrigerant is pressured; initializing operation consisting of 더 포함하여 이루어진 것을 특징으로 하는 멀티 에어콘의 전자팽창밸브 제어 방법.Electronic expansion valve control method of a multi air conditioner, characterized in that further comprises.
KR1019980047225A 1998-11-04 1998-11-04 Method for controlling electronic expansion valve of multi inverter airconditioner KR100302858B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019980047225A KR100302858B1 (en) 1998-11-04 1998-11-04 Method for controlling electronic expansion valve of multi inverter airconditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980047225A KR100302858B1 (en) 1998-11-04 1998-11-04 Method for controlling electronic expansion valve of multi inverter airconditioner

Publications (2)

Publication Number Publication Date
KR20000031275A KR20000031275A (en) 2000-06-05
KR100302858B1 true KR100302858B1 (en) 2002-02-28

Family

ID=19557191

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019980047225A KR100302858B1 (en) 1998-11-04 1998-11-04 Method for controlling electronic expansion valve of multi inverter airconditioner

Country Status (1)

Country Link
KR (1) KR100302858B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100430295B1 (en) * 2001-10-11 2004-05-04 엘지전자 주식회사 Control method of Airconditioner
CN105805994B (en) * 2016-04-25 2018-09-07 广东美的暖通设备有限公司 The control method and control device of a kind of expansion valve for compressor
KR102065740B1 (en) * 2018-04-25 2020-01-13 에스케이매직 주식회사 Method for initializing water purifier

Also Published As

Publication number Publication date
KR20000031275A (en) 2000-06-05

Similar Documents

Publication Publication Date Title
US5214918A (en) Refrigerator and method for indicating refrigerant amount
EP1760411B1 (en) Method for controlling the super-heating degree in a heat pump system
KR900003052B1 (en) Refrigerant flow control system for use with refrigerator
KR101161240B1 (en) Air conditioner
US7918098B2 (en) Air conditioning system
AU634111B2 (en) Air-conditioning system
EP1568953B1 (en) Control method for four-way valve of multiple heat pump
JPH0968356A (en) Refrigerant circulating system
EP2863152B1 (en) Air conditioning device
EP3483524A1 (en) Control device of multiple-type air conditioning device, multiple-type air conditioning device, method of controlling multiple-type air conditioning device, and computer program of controlling multiple-type air conditioning device
EP1431677B1 (en) Air conditioner
JP2001221526A (en) Refrigerative air conditioner
WO2020170470A1 (en) Refrigeration cycle device
WO2023092889A1 (en) Multi-split air conditioner
KR100302858B1 (en) Method for controlling electronic expansion valve of multi inverter airconditioner
KR101329752B1 (en) Air conditioning system
KR101392316B1 (en) Air conditioning system
JP4179783B2 (en) Air conditioner
KR101152936B1 (en) A multi air conditioner system and a pipe connection searching method of the multi air conditioner system
JPH10205933A (en) Air conditioner
KR101450545B1 (en) Air conditioning system
JP3661014B2 (en) Refrigeration equipment
KR20200126589A (en) Cooling System with Self-Controlling of condensing Temperature
JPH08136078A (en) Multi-room cooling and heating device
JP6540074B2 (en) Air conditioner

Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20120618

Year of fee payment: 12

LAPS Lapse due to unpaid annual fee