KR0123449B1 - Apparatus for controlling cold-material of ariconditioner - Google Patents
Apparatus for controlling cold-material of ariconditionerInfo
- Publication number
- KR0123449B1 KR0123449B1 KR1019920021718A KR920021718A KR0123449B1 KR 0123449 B1 KR0123449 B1 KR 0123449B1 KR 1019920021718 A KR1019920021718 A KR 1019920021718A KR 920021718 A KR920021718 A KR 920021718A KR 0123449 B1 KR0123449 B1 KR 0123449B1
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- South Korea
- Prior art keywords
- refrigerant
- heat exchanger
- level
- paths
- temperature sensors
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Classifications
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F3/065—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 with a plurality of evaporators or condensers
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- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
- F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
제1도는 종래의 에어컨 냉각사이클의 모식도.1 is a schematic diagram of a conventional air conditioning cooling cycle.
제2도는 본 발명이 적용된 에어컨 냉각사이클의 모식도.2 is a schematic diagram of an air conditioning cooling cycle to which the present invention is applied.
제3도는 본 발명의 바람직한 실시예를 나타낸 블럭도.3 is a block diagram showing a preferred embodiment of the present invention.
제4도는 본 실시예에 따른 연산제어수단의 기능수행과정을 설명하기 위한 흐름도.4 is a flowchart for explaining a function performance process of the arithmetic control means according to the present embodiment.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 압축기 2 : 수액기1: compressor 2: receiver
3 : 실외열교환기 4 : 실외팬3: outdoor heat exchanger 4: outdoor fan
5 : 실외팬모터 6 : 모세관5: outdoor fan motor 6: capillary tube
7 : 실내열교환기 8 : 실내팬7: indoor heat exchanger 8: indoor fan
9 : 실내팬모터 10 : 인버터제어기9: indoor fan motor 10: inverter controller
20 : 다중화부 30 : A/D변환부20: multiplexer 30: A / D conversion unit
40 : 연산제어부 50 : 밸브구동부40: operation control unit 50: valve driving unit
T1~T6 : 온도센서 V1~V3 : 유량조절밸브.T1 ~ T6: Temperature sensor V1 ~ V3: Flow control valve.
본 발명은 에어컨디셔너(air conditioner : 이하 '에어컨'이라 약칭함)에 관한 것으로 특히 압축기로부터 실외열교환기의 각패스로 제공되는 냉매의 유량을 조절하기 위한 에어컨 냉매량조절장치에 관한 것이다.The present invention relates to an air conditioner (abbreviated as "air conditioner"), and more particularly, to an air conditioner refrigerant amount control device for controlling the flow rate of the refrigerant provided from the compressor to each pass of the outdoor heat exchanger.
통상적인 에어컨은 제1도에 도시된 바와같이, 압축기(1), 실외열교환기(3), 모세관(6), 실내열교환기(7), 수액기(2)가 순차로 연결된 냉각사이클을 이룬다.A typical air conditioner is a cooling cycle in which a compressor 1, an outdoor heat exchanger 3, a capillary tube 6, an indoor heat exchanger 7, and a receiver 2 are sequentially connected as shown in FIG. .
인버터제어기(10)가 구동주파수를 제어함에 따라서 구동되는 압축기(1)에 의해 고온, 고압의 기체로 변환되는 냉매는 실외열교환기(3)로 제공된다.As the inverter controller 10 controls the driving frequency, the refrigerant that is converted into gas of high temperature and high pressure by the compressor 1 driven is provided to the outdoor heat exchanger 3.
고온, 고압의 기체냉매는 실외열교환기(3)의 각 패스로 분기(分岐)되어 모터(5)와 함께 회전하는 실외팬(4)에 의한 공기와 열교환이 이루어지게 됨으로써 응축되어 고압의 액체냉매로 변환된다.The high temperature and high pressure gas refrigerant is condensed by the heat exchange with the air by the outdoor fan 4 which is branched into each path of the outdoor heat exchanger 3 and rotates together with the motor 5 to condense the high pressure liquid refrigerant. Is converted to.
이와같이 실외열교환기(3)에 의해 고압의 액체상태로 된 냉매는 모세관(6)을 거치면서 저온, 저압상태로 변환되어 실내열교환기(7)로 제공된다.In this way, the refrigerant which has become a high-pressure liquid state by the outdoor heat exchanger 3 is converted into a low temperature and low pressure state through the capillary tube 6 and is provided to the indoor heat exchanger 7.
실내열교환기(7)에 도달한 저온, 저압의 액체냉매는 모터(9)에 의해 회전하는 실내팬(8)에 의한 공기와 열교환되어 실내를 냉방시켜주면서 자신은 기체상태로 변환된다.The low-temperature and low-pressure liquid refrigerant reaching the indoor heat exchanger 7 exchanges heat with air by the indoor fan 8 rotating by the motor 9 to cool the room and convert itself into a gaseous state.
이렇게 기체상태로 변환된 냉매는 수액기(2)에서 액체상태로 변환된 후 다시 압축기(1)로 제공된다.The refrigerant converted into the gas state is converted into the liquid state in the receiver 2 and then provided to the compressor 1 again.
이상과 같은 냉각사이클에 의해 냉방을 하게 되는데, 실내의 온도에 따라서 인버터제어기(10)를 통하여 압축기(1)의 구동 주파수를 가변적으로 제어함으로써 실내온도를 적절히 조절할 수 있게 된다.Cooling by the cooling cycle as described above, by controlling the drive frequency of the compressor (1) through the inverter controller 10 in accordance with the temperature of the room it is possible to appropriately adjust the room temperature.
그러나, 통상 팬에 의한 공기흐름을 통하여 냉매의 열교환이 이루어지도록 하는 열교환기의 패스(path)가 2개 이상일 경우 각 패스를 통하여 나뉘어져 흐르게 되는 냉매의 양을 균일하게 유지시켜 주어 각 패스의 출구에서 동일한 온도로 다시 모여질 경우에만 열교환 효율이 가장 좋게 된다.However, when there are two or more paths of the heat exchanger that allow the heat exchange of the refrigerant through the air flow through the fan, the amount of refrigerant flowing through the respective paths is maintained uniformly at the exit of each path. The heat exchange efficiency is best only when it is collected again at the same temperature.
이와같은 다중패스(multiple path) 열교환기의 제작에 있어 패스의 용접상태, 구부러짐(bending), 확관등으로 인한 각 패스의 직경차이, 팬 및 패스의 위치등이 균일하지 않게 되기 때문에 열교환 효율이 떨어지는 문제점이 있었다.In the manufacture of such a multiple path heat exchanger, the heat exchange efficiency is inferior because the diameter difference of each path due to the weld state, bending, expansion, etc. of the path, the position of the fan and the path are not uniform. There was a problem.
본 발명은 이와같은 종래 기술의 문제를 해결하기 위한 것으로 다중패스 열교환기의 열교환 효율을 향상시키기 위한 에어컨 냉매량조절장치를 제공하는 것이다.The present invention is to solve the problems of the prior art to provide an air conditioner refrigerant amount control device for improving the heat exchange efficiency of the multi-pass heat exchanger.
이상과 같은 목적을 달성하기 위한 기술적 수단으로서 본 발명은, 압축기에 의해 압축된 고온, 고압의 기체냉매를 액체냉매로 변환하는 다중패스 실외열교환기를 구비한 에어컨에 있어서, 상기 실외열교환기는 n(여기서, n은 레벨수로서, n=0,1,2…) 입출력레벨(input dutput level)로 구성되고 레벨당 2n개의 패스를 갖고 상위레벨(upper level)의 각 패스당 한쌍의 하위 레벨패스(lower level path)와 연결되며 2n개의 최하위 레벨패스(lowest level path)를 갖고, 상기 n출력레벨(총 2n+2n-1+…+21개의 패스)의 각패스에 구성되는 복수(2n+2n-1+…+21)개의 온도센서와, 상기 n입력레벨의 패스들중 하나의 상위 레벨패스와 각각 연결되는 한쌍의 하위 레벨패스중 어느 하나에 각각 구성되는 복수(2n-1+2n-2+…+20)개의 냉매조절밸브와 상기 복수개의 온도센서의 출력을 순차로 받아들여 비교연산한 후 상기 복수개의 냉매조절밸브를 개폐시키기 위한 제어기능을 수행하는 마이크로컴퓨터등과 같은 연산제어수단과, 이 연산제어수단에 의해 제어되어 상기 복수개의 온도센서로부터 제공되는 아날로그 데이타신호를 다중화(multiplexing)시키는 다중화 수단과, 상기 다중화 수단의 출력신호를 디지탈신호로 변환하여 상기 연산제어수단으로 제공하는 A/D(analog to digital)변환 수단 및 상기 연산제어수단에 의해 제어되어 상기 복수개의 냉매조절밸브를 구동시키는 밸브구동수단을 포함하는 것이 특징이다.The present invention as a technical means for achieving the above object, in the air conditioner having a multi-pass outdoor heat exchanger for converting a high-temperature, high-pressure gas refrigerant compressed by a compressor into a liquid refrigerant, the outdoor heat exchanger is n (where where n is the number of levels, n = 0,1,2…) Input and output levels, 2 n passes per level, and a pair of lower level paths for each pass of the upper level. lower path level) and a plurality of connection paths each consisting of n 2 and has a bottom-level path (path lowest level), the n output level (a total of 2 n +2 n-1 + ... + 2 1 of path) ( 2 n +2 n-1 +… + 2 1 ) temperature sensors and a plurality of lower level paths each configured to any one of a pair of lower level paths respectively connected to one upper level path among the paths of the n input level; n-1 +2 n-2 + ... + 2 0) of the refrigerant control valve and sequentially outputs of the plurality of temperature sensors Arithmetic control means such as a microcomputer for performing a control function for opening and closing the plurality of refrigerant control valves after the comparison operation is performed, and an analog data signal controlled by the arithmetic control means provided from the plurality of temperature sensors Multiplexing means for multiplexing the signal, an A / D (analog to digital) converting means for converting an output signal of the multiplexing means into a digital signal and providing the same to the arithmetic control means; And valve driving means for driving two refrigerant control valves.
이제부터 첨부된 도면을 참조하면서 본 발명에 대하여 상세히 기술하겠다.The present invention will now be described in detail with reference to the accompanying drawings.
제2도는 본 발명이 적용된 냉각사이클의 모식도로서 본 발명에 대한 설명을 보다 간단히 하기 위해 3레벨로 구성되고 4개의 최하위 레벨패스를 갖는 실내열교환기(3)의 경우를 예로서 들어 나타낸 것이다.FIG. 2 is a schematic diagram of a cooling cycle to which the present invention is applied. In order to simplify the description of the present invention, FIG. 2 shows an example of an indoor heat exchanger 3 having three levels and having four lowest level passes.
제2도에 도시된 바와같이, 최상위 입력레벨인 입력레벨0(IL0)의 패스는 1(=20)개이고,입력레벨1(IL1)의 패스는 2(=21)개이고 최하위 입력레벨인 입력레벨 2(IL2) 의 패스는 4(=22)개이다.As shown in FIG. 2, the input level 0 (IL0) of the highest input level has 1 (= 2 0 ) paths, and the input level 1 (IL1) has 2 (= 2 1 ) paths of the lowest input level. The input level 2 (IL2) has 4 (= 2 2 ) passes.
출력레벨(OL0~OL2)패스의 구성은 입력레벨의 구성과 동일하다. 따라서, 최하위 출력레벨인 출력레벨 2(OL2)의 패스수는 4이고, 출력레벨1(OL1)의 패스수는 2, 최상위 출력레벨인 출력레벨 0(OL0)의 패스수는 1이다.The configuration of the output level (OL0 to OL2) path is the same as that of the input level. Therefore, the number of passes of output level 2 (OL2) that is the lowest output level is 4, the number of passes of output level 1 (OL1) is 2, and the number of passes of output level 0 (OL0) that is the highest output level is 1.
제2도에서 알 수 있는 바와같이 출력레벨의 최상위 레벨패스를 제외한 6(22+21)개의 패스 각각에는 온도감지센서 T1 내지 T6가 장치된다.As can be seen in FIG. 2, each of the 6 (2 2 + 2 1 ) passes except for the highest level pass of the output level is equipped with temperature sensors T1 to T6.
입력레벨의 최상위 패스를 제외한 각 쌍의 패스중 어느 하나의 패스에는 냉매의 유량을 조절하기 위한 유량조절밸브 V1 내지 V3가 장치된다.One of each pair of passes except for the top pass of the input level is provided with flow control valves V1 to V3 for regulating the flow rate of the refrigerant.
제3도는 본 발명의 바람직한 실시예를 나타낸 도면이다.3 is a view showing a preferred embodiment of the present invention.
제3도에서, T1 내지 T6는 온도감지센서, V1내지 V3는 유량조절밸브이며, 20은 다중화 수단인 아날로그 멀티플렉서로서 본 실시예에서는 MC14051B가 사용된다.In FIG. 3, T1 to T6 are temperature sensing sensors, V1 to V3 are flow regulating valves, and 20 is an analog multiplexer which is a multiplexing means. In this embodiment, MC14051B is used.
또한, 30은 A/D변환부이고, 40은 연산제어수단인 마이크로 프로세서(microprocessor) 또는 마이크로컴퓨터, 50은 연산제어수단(40)에 의해 제어되며 유량조절밸브(V1~V3)를 구동하는데 밸브구동부를 각각 나타낸 것이다.In addition, 30 is an A / D conversion unit, 40 is a microprocessor or microcomputer that is arithmetic control means, 50 is controlled by arithmetic control means 40 and drives the flow control valves V1 to V3. Each drive unit is shown.
이상과 같은 구성을 갖는 본 발명의 작용을 제4도의 흐름도를 참조하면서 상세히 설명하겠다.The operation of the present invention having the above configuration will be described in detail with reference to the flowchart of FIG.
본 실시예에 따른 연산제어수단인 마이크로 프로세서(40)는 자신의 포트 P1 내지 P3를 통하여 000,001의 데이타를 순차로 멀티플렉서(20)로 제공하여 온도센서 T1및T2의 데이타를 A/D변환부(30)를 통하여 읽어들인다(S1)The microprocessor 40, which is an operation control means according to the present embodiment, sequentially provides the data of 000,001 to the multiplexer 20 through its ports P1 to P3, thereby providing data of the temperature sensors T1 and T2 to the A / D converter ( Read through 30) (S1)
이어, 마이크로 프로세서(40)는 온도센서 T1의 데이타와 온도센서 T2의 데이타를 비교하여 동일한지 여부를 판단한다(S2). 이때 두 데이타값이 동일하지 않으면 온도센서 T1의 데이타값이 온도센서 T2의 데이타값보다 큰지 여부를 판별한다(S3). 이때 온도센서 T1의 데이타값이 온도센서 T2의 데이타값보다 크면 즉 단계3에서 '예'이면 마이크로 프로세서(40)는 유량조절밸브 V1의 구경을 소정량만큼 줄이기 위해 즉, 밸브(V1)를 약간 닫기 위해 밸브구동부(50)를 제어한다(S4).Subsequently, the microprocessor 40 compares the data of the temperature sensor T1 with the data of the temperature sensor T2 and determines whether they are the same (S2). If the two data values are not the same, it is determined whether the data value of the temperature sensor T1 is larger than the data value of the temperature sensor T2 (S3). At this time, if the data value of the temperature sensor T1 is larger than the data value of the temperature sensor T2, that is, yes in step 3, the microprocessor 40 reduces the diameter of the flow control valve V1 by a predetermined amount, that is, slightly decreases the valve V1. In order to close the valve driving unit 50 is controlled (S4).
온도센서 T1의 데이타값이 온도센서 T2의 데이타값보다 크지 않으면(즉, 단계 3에서'아니오'이면)마이크로 프로세서(40)는 밸브(V1)를 약간 열기 위해 벨브구동부(50)를 제어한다(S4). 이와같은 과정은 온도센서 T1 및 T2의 데이타값이 동일하게 될때까지 즉, 두 패스를 통하여 흐르는 냉매의 온도가 동일해질때까지 반복된다.If the data value of the temperature sensor T1 is not larger than the data value of the temperature sensor T2 (ie, no at step 3), the microprocessor 40 controls the valve driver 50 to open the valve V1 slightly ( S4). This process is repeated until the data values of the temperature sensors T1 and T2 are the same, that is, until the temperatures of the refrigerant flowing through the two passes are the same.
온도센서 T1 및 T2의 데이타값이 동일하면(즉,단계 S2에서 '예'이면) 마이크로프로세서(40)는 자신의 포트 P1내지 P3를 통하여 010, 011의 데이타를 순차로 멀티플렉서(20)로 제공하여 상술한 과정(단계 S1~단계 ST)과 동일하게 온도센서 T3 및 T4의 데이타값을 읽어 유량조절밸브 V2를 열거나 닫기위한 제어를 수행한다(S6~S10).If the data values of the temperature sensors T1 and T2 are the same (i.e., yes in step S2), the microprocessor 40 sequentially provides the multiplexer 20 with data of 010 and 011 through its ports P1 to P3. By reading the data values of the temperature sensors T3 and T4 in the same manner as the above-described process (steps S1 to ST), the control for opening or closing the flow control valve V2 is performed (S6 to S10).
온도센서 T3 및 T4의 데이타값이 동일하게 되면(즉,단계 S7에서 '예'이면)마이크로 프로세서(40)는 다시 자신의 포트 P1 내지 P3를 통하여 100, 101의 데이타를 순차로 멀티플렉서(20)로 제공함으로써 온도센서 T5 및 T6의 데이타값을 읽어(S11), 두 값이 동일한지 여부를 판별한 후(S12), 동일하면(단계 S12에서 '예'이면)단계 S1으로 복귀하고, 동일하지 않으면(단계 S12에서 '아니오'이면) 두 데이타값의 대수를 비교하여(S13)밸브 V3를 열거나 닫기 위하여 밸브구동부(50)를 제어한다.When the data values of the temperature sensors T3 and T4 become the same (that is, YES in step S7), the microprocessor 40 again sequentially multiplexes the data of 100 and 101 through its ports P1 to P3. By reading the data values of the temperature sensors T5 and T6 (S11), it is determined whether the two values are the same (S12), and if they are the same (YES in step S12), the process returns to step S1 and is not the same. If not (NO in step S12), the valve driving unit 50 is controlled to open or close the valve V3 by comparing the logarithms of the two data values (S13).
이상과 같은 실시예에 따르면 에어컨의 작동중에 온도센서 T1내지 T6를 통하여 각 패스로 흐르는 냉매의 온도를 감지하여 밸브 V1 내지 V3로 각 패스로 흐르는 냉매량을 조절함으로써 각 패스의 열교환을 균등하게 하여 열교환 효율을 향상시킬 수 있게 된다.According to the above embodiments, the temperature of the refrigerant flowing in each path is sensed through the temperature sensors T1 to T6 during the operation of the air conditioner, and the amount of refrigerant flowing in each path is adjusted by the valves V1 to V3 to equalize the heat exchange of each path. The efficiency can be improved.
본 발명은 비록 최하위 레벨의 패스수가 4인 경우의 열교환기를 실시예로서 들어 상세히 설명되었지만 본 발명이 이에 국한되는 것은 아니며 본 발명의 범위와 기술적 사상은 청구범위에 기술된 것에 의해 한정된다.Although the present invention has been described in detail by way of example as a heat exchanger in the case where the number of passes at the lowest level is four, the present invention is not limited thereto, and the scope and spirit of the present invention are defined by the claims.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920021718A KR0123449B1 (en) | 1992-11-19 | 1992-11-19 | Apparatus for controlling cold-material of ariconditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019920021718A KR0123449B1 (en) | 1992-11-19 | 1992-11-19 | Apparatus for controlling cold-material of ariconditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR940011891A KR940011891A (en) | 1994-06-22 |
| KR0123449B1 true KR0123449B1 (en) | 1997-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019920021718A KR0123449B1 (en) | 1992-11-19 | 1992-11-19 | Apparatus for controlling cold-material of ariconditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101227477B1 (en) * | 2005-10-05 | 2013-01-30 | 엘지전자 주식회사 | Air conditioner having volume variableness type condenser and method of control thereof |
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- 1992-11-19 KR KR1019920021718A patent/KR0123449B1/en not_active IP Right Cessation
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101227477B1 (en) * | 2005-10-05 | 2013-01-30 | 엘지전자 주식회사 | Air conditioner having volume variableness type condenser and method of control thereof |
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| KR940011891A (en) | 1994-06-22 |
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