KR100504883B1 - Method for initial diriving of simultaneous multi-type air conditioner - Google Patents
Method for initial diriving of simultaneous multi-type air conditioner Download PDFInfo
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- KR100504883B1 KR100504883B1 KR10-2003-0023421A KR20030023421A KR100504883B1 KR 100504883 B1 KR100504883 B1 KR 100504883B1 KR 20030023421 A KR20030023421 A KR 20030023421A KR 100504883 B1 KR100504883 B1 KR 100504883B1
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000003507 refrigerant Substances 0.000 claims abstract description 7
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 241001122767 Theaceae Species 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
Classifications
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/075—Details of compressors or related parts with parallel compressors
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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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
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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
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
본 발명은 동시형 멀티공기조화기의 초기기동방법에 관한 것으로, 더욱 상세하게는 인버터 압축기와 정속압축기를 채용한 동시형 멀티공기조화기의 초기기동시인버터 압축기를 저주파수로 일정시간 운전시킨후, 정속압축기를 바로 온시켜 빠르게 초기기동함으로써, 부하변동에 빠르게 대응할 수 있도록 한 동시형 멀티공기조화기의 초기기동방법에 관한 것이다. 이를 위하여 본 발명은 인버터 압축기와 정속 압축기를 채용한 동시형 멀티공기조화기의 초기기동에 있어서, 부하를 검출하여, 그 검출된 부하가 큰 냉매를 필요로 하는 중부하인지를 판단하는 제1 단계와; 상기 검출된 부하가 중부하라고 판단되면, 상기 인버터 압축기에 일정 저주파수를 인가하고 정속 압축기를 오프시키며 소정시간이 경과하였는지를 판단하는 제2 단계와; 상기 소정시간이 경과되면 부하를 검출하여 중부하인지를 재차판단하여 중부하라고 판단되면 상기 인버터 압축기의 일정 저주파수를 운전주파수로 서서히 증가시키며 정속압축기와 함께 초기기동시키는 제3 단계와; 상기 제1 단계의 판단결과, 상기 중부하가 아니라고 판단되면 상기 인버터 압축기의 일정 주파수로 초기기동하는 제4 단계를 수행하도록 이루어진 것을 특징으로한다.The present invention relates to an initial start method of a simultaneous multi-air conditioner, and more particularly, after operating the inverter compressor at a low frequency for a predetermined time during initial start-up of the simultaneous multi-air conditioner employing an inverter compressor and a constant speed compressor. The present invention relates to an initial start method of a simultaneous multi-air conditioner that is able to respond quickly to load changes by immediately turning on the constant speed compressor. To this end, the present invention is the first step of detecting the load in the initial start-up of a simultaneous multi-air conditioner employing an inverter compressor and a constant speed compressor to determine whether the detected load is a heavy load requiring a large refrigerant Wow; If it is determined that the detected load is heavy, a second step of applying a constant low frequency to the inverter compressor, turning off the constant speed compressor, and determining whether a predetermined time has elapsed; A third step of detecting a load when the predetermined time has elapsed and re-determining whether it is a heavy load and gradually increasing a predetermined low frequency of the inverter compressor to an operating frequency and initial starting with a constant speed compressor when it is determined to be heavy load; As a result of the determination of the first step, if it is determined that the load is not heavy, the fourth step of initially starting at a predetermined frequency of the inverter compressor may be performed.
Description
본 발명은 동시형 멀티공기조화기의 초기기동방법에 관한 것으로, 더욱 상세하게는 인버터 압축기와 정속압축기를 채용한 동시형 멀티공기조화기의 초기기동시인버터 압축기를 저주파수로 일정시간 운전시킨후, 정속압축기를 바로 온시켜 빠르게 초기기동함으로써, 부하변동에 빠르게 대응할 수 있도록 한 동시형 멀티공기조화기의 초기기동방법에 관한 것이다.The present invention relates to an initial start method of a simultaneous multi-air conditioner, and more particularly, after operating the inverter compressor at a low frequency for a predetermined time during initial start-up of the simultaneous multi-air conditioner employing an inverter compressor and a constant speed compressor. The present invention relates to an initial start method of a simultaneous multi-air conditioner that is able to respond quickly to load changes by immediately turning on the constant speed compressor.
일반적으로, 공기조화기는 냉매의 열량을 기계적인 방법에 의해 변화시켜 실외기와 열교환시킴으로써 냉난방을 실현하는데, 이러한 공기조화기의 냉동 사이클은 압축기, 실외 열교환기, 모세관, 실내 열교환기를 순차적으로 연설하고 전자 팽창밸브의 전환방향에 따라 냉매를 정/역순환시켜 실외기와 열교환을 시켜 냉난방을 실현한다.In general, the air conditioner realizes cooling and heating by changing the heat amount of the refrigerant by a mechanical method and exchanging heat with the outdoor unit. The refrigeration cycle of the air conditioner sequentially addresses the compressor, the outdoor heat exchanger, the capillary tube, and the indoor heat exchanger. Cooling and heating are realized by exchanging the refrigerant forward / reversely according to the switching direction of the expansion valve to exchange heat with the outdoor unit.
이러한 공기조화기은 여러 개의 룸에 각각 하나씩 실내기를 설치하고 이들 다수의 실내기와 연결된 하나의 실외기로 구성된 다실형과, 단순하게 실외기와 실내기만으로 이루어진 분리형과, 상기 실외기와 실내기가 함께 구성된 일체형으로 나뉘어진다.The air conditioner is divided into a multi-room type consisting of one outdoor unit connected to a plurality of indoor units and one indoor unit connected to a plurality of indoor units, a detachable type consisting of only an outdoor unit and an indoor unit, and an integrated unit consisting of the outdoor unit and the indoor unit. .
특히, 다실형인 동시형 멀티공기조화기의 냉동 사이클은 실내 열교환기를 복수로 설치하여 다실을 동시에 공조할 수 있도록 하는 것으로 복수의 실내 열교환기에 모세관이 각각 직렬로 설치된다. 그리고 공조장소에 대해 선택적으로 공조를 행할 경우 해당 공조장소만 공조가 이루어지도록 실내 열교환기의 전단에 냉매의 흐름을 차단할 수 있는 전자 팽창밸브를 설치하고 있다.In particular, the refrigeration cycle of the multi-chamber simultaneous multi-air conditioner is to install a plurality of indoor heat exchangers to be able to air conditioning the tea room at the same time, the capillary tube is installed in each of the plurality of indoor heat exchangers in series. In addition, when the air conditioning is selectively air-conditioned, an electronic expansion valve is installed at the front end of the indoor heat exchanger to block the flow of refrigerant so that only the air conditioning is air-conditioned.
도 1은 종래 동시형 멀티 공기조화기의 압축기 운전을 보인 예시도로서, 이에 도시한 바와 같이 실내기 용량 전체를 100%로 봤을때 50%를 기준으로 50%이하에서는 정속 압축기를 오프(off)하고, 검출부하에 따라 인버터 압축기의 인가주파수를 30Hz~120Hz까지 가변하며 실내기 용량에 대응하여 운전한다.1 is an exemplary view illustrating a compressor operation of a conventional simultaneous multi air conditioner. As shown in FIG. 1, when the total indoor unit capacity is 100%, the constant speed compressor is turned off at 50% or less based on 50%. Depending on the detection load, the frequency applied to the inverter compressor varies from 30Hz to 120Hz and operates according to the indoor unit capacity.
그리고, 실내기 용량이 50%이상에서는 정속 압축기를 온(on)시킴과 동시에 인버터(Inverter) 압축기의 인가주파수를 50Hz~120Hz까지 가변하며 검출부하에 따라 실내기 용량에 대응하여 운전한다.When the indoor unit capacity is 50% or more, the constant speed compressor is turned on and the frequency applied to the inverter compressor is varied from 50 Hz to 120 Hz, and it operates according to the indoor unit capacity according to the detection load.
상술한 바와 같이 기동하는 인버터 및 정속 압축기를 채용한 종래 동시형 멀티공기조화기의 초기 기동시에는 도 2와 같이 a구간동안 인버터 압축기의 초기인가주파수를 증가시키며 120Hz상승시킨후, b구간에서 상기 인버터 압축기의 인가주파수를 40Hz까지 서서히 떨어뜨린다.In the initial start-up of the conventional synchronous multi-air conditioner adopting the starting inverter and the constant speed compressor as described above, as shown in FIG. Slowly drop the frequency of the inverter compressor down to 40Hz.
이때, 정속 압축기는 a, b구간동안 오프상태를 유지하다가 상기 인버터 압축기의 인가주파수가 40Hz가 되는 순간 c구간에서 정속 압축기를 온시킨다.At this time, the constant speed compressor maintains the OFF state for sections a and b, and then turns on the constant speed compressor at section c when the frequency applied to the inverter compressor reaches 40 Hz.
이후, 상기 인버터 압축기는 d, e구간에서 운전주파수로 정속 압축기와 함께 기동한다.Thereafter, the inverter compressor is started together with the constant speed compressor at the operating frequency in the sections d and e.
그러나, 상기와 같이 동작하는 종래 장치는 동시형 멀티공기조화기의 초기 기동시, 인버터 압축기의 인가주파수를 120Hz까지 인가하여 운전한후 40Hz로 낮춰서 정속 압축기를 온시킨후 다시 인버터 압축기를 운전주파수까지 올리는데 많은 시간이 걸림에 따라 실내기 용량에 대응하는 사이클이 안정화되는데 까지는 많은 시간이 걸리는 문제점이 있었다.However, in the conventional apparatus operating as described above, after the initial start of the synchronous multi-air conditioner, the inverter operates by applying an applied frequency of the inverter compressor to 120 Hz, lowers it to 40 Hz, turns on the constant speed compressor, and then turns the inverter compressor to the operating frequency. As it takes a lot of time to raise, there was a problem that it takes a long time to stabilize the cycle corresponding to the indoor unit capacity.
따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 창안한 것으로, 동시형 멀티공기조화기의 초기 기동시 부하를 검출하여 그 부하에 인버터 압축기를 40Hz로 일정시간 운전시킨후 그 40Hz에서 서서히 인가주파수를 운전주파수로 증가시키며 동시에 정속 압축기를 온시켜서 보다 빠르게 실내기 용량에 대응하는 안정적인 사이클로 운전될 수 있도록 한 동시형 멀티공기조화기의 초기기동방법을 제공함에 그 목적이 있다.Therefore, the present invention was devised to solve the above problems, and detects a load at the initial startup of a synchronous multi-air conditioner, operates the inverter compressor at 40 Hz for a predetermined time, and gradually applies an applied frequency at the 40 Hz. The purpose of the present invention is to provide an initial starting method of a simultaneous multi-air conditioner which increases the operating frequency and simultaneously turns on the constant speed compressor so that it can be operated in a stable cycle corresponding to the indoor unit capacity more quickly.
상기와 같은 목적을 달성하기 위한 본 발명은, 인버터 압축기와 정속 압축기를 채용한 동시형 멀티공기조화기의 초기기동에 있어서, 부하를 검출하여, 그 검출된 부하가 큰 냉매를 필요로 하는 중부하인지를 판단하는 제1 단계와; 상기 검출된 부하가 중부하라고 판단되면, 상기 인버터 압축기에 일정 저주파수를 인가하고 정속 압축기를 오프시키며 소정시간이 경과하였는지를 판단하는 제2 단계와; 상기 소정시간이 경과되면 부하를 검출하여 중부하인지를 재차판단하여 중부하라고 판단되면 상기 인버터 압축기의 일정 저주파수를 운전주파수로 서서히 증가시키며 정속압축기와 함께 초기기동시키는 제3 단계와; 상기 제1 단계의 판단결과, 상기 중부하가 아니라고 판단되면 상기 인버터 압축기의 일정 주파수로 초기기동하는 제4 단계를 수행하도록 이루어진 것을 특징으로 한다.In order to achieve the above object, the present invention provides a heavy load that detects a load in an initial start-up of a simultaneous multi-air conditioner employing an inverter compressor and a constant speed compressor, and requires a refrigerant having a large detected load. A first step of determining recognition; If it is determined that the detected load is heavy, a second step of applying a constant low frequency to the inverter compressor, turning off the constant speed compressor, and determining whether a predetermined time has elapsed; A third step of detecting a load when the predetermined time has elapsed and re-determining whether it is a heavy load and gradually increasing a predetermined low frequency of the inverter compressor to an operating frequency and initial starting with a constant speed compressor when it is determined to be heavy load; As a result of the determination of the first step, if it is determined that the load is not heavy, the fourth step of initially starting at a predetermined frequency of the inverter compressor may be performed.
이하, 본 발명에 따른 일실시예를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.
도 3은 본 발명 동시형 멀티공기조화기의 초기기동방법을 보인 흐름도로서, 이에 도시된 바와 같이 인버터 압축기와 정속 압축기를 채용한 동시형 멀티공기조화기의 초기기동에 있어서, 부하를 검출하여, 그 검출된 부하가 큰 냉매를 필요로 하는 중부하인지를 판단하는 제1 단계와; 상기 검출된 부하가 중부하라고 판단되면, 상기 인버터 압축기에 일정 저주파수를 인가하고 정속 압축기를 오프시키며 소정시간이 경과하였는지를 판단하는 제2 단계와; 상기 소정시간이 경과되면 부하를 검출하여 중부하인지를 재차판단하여 중부하라고 판단되면 상기 인버터 압축기의 일정 저주파수를 운전주파수로 서서히 증가시키며 정속압축기와 함께 초기기동시키는 제3 단계와; 상기 제1 단계의 판단결과, 상기 중부하가 아니라고 판단되면 상기 인버터 압축기의 일정 주파수로 초기기동하는 제4 단계를 수행하는 것으로, 이와 같이 구성된 본 발명의 동작은 본 발명의 동작 및 작용설명을 위해 첨부된 도 4를 통해 설명한다.3 is a flow chart showing an initial start method of the present invention simultaneous multi air conditioner, as shown in the initial start of the simultaneous multi air conditioner employing the inverter compressor and constant speed compressor, by detecting the load, A first step of determining whether the detected load is a heavy load requiring a large refrigerant; If it is determined that the detected load is heavy, a second step of applying a constant low frequency to the inverter compressor, turning off the constant speed compressor, and determining whether a predetermined time has elapsed; A third step of detecting a load when the predetermined time has elapsed and re-determining whether it is a heavy load and gradually increasing a predetermined low frequency of the inverter compressor to an operating frequency and initial starting with a constant speed compressor when it is determined to be heavy load; As a result of the determination of the first step, if it is determined that the load is not heavy, the fourth step of initially starting at a predetermined frequency of the inverter compressor is performed. The operation of the present invention configured as described above is for the operation and operation of the present invention. This will be described with reference to FIG. 4.
먼저, 동시형 멀티공기조화기의 초기기동시 부하를 검출하여 실내기의 용량을 검출하게 된다. First, the capacity of the indoor unit is detected by detecting the load at the initial startup of the simultaneous multi-air conditioner.
이때, 상기 검출된 실내기의 용량이 전 실내기의 용량을 100%으로 봤을때 50%이상으로 판단이 되면 인버터 압축기의 운전주파수를 가변하며 정속 압축기와 동시에 운전시키는 구간으로 판단하여, 도 4의 A구간과 같이 인버터 압축기의 초기기동 주파수를 40Hz의 저주파수로 소정시간동안 기동시킨다.At this time, if it is determined that the detected capacity of the indoor unit is more than 50% when the capacity of all indoor units is determined to be 100% or more, it is determined that the operating frequency of the inverter compressor is varied and is operated simultaneously with the constant speed compressor, section A of FIG. 4. As described above, the initial startup frequency of the inverter compressor is started at a low frequency of 40 Hz for a predetermined time.
상기 인버터 압축기의 40Hz의 초기기동 주파수는 상기 A구간과 같이 정속 압축기는 오프(off)상태이고, 상기 인버터 압축기만을 40Hz의 저주파수로 초기기동시킨다.As shown in the section A, the constant speed compressor is in an off state and the inverter compressor is initially started at a low frequency of 40 Hz.
이후, 상기 소정시간후 부하를 재차 검출하여 그 검출된 부하 즉, 실내기 용량의 변화가 있는지를 판단하여, 상기 판단결과, 이전 실내기 용량보다 감소한 실내기 용량이 50%이하인 경부하라고 판단되면 정속 압축기를 오프(off)하고, 인버터 압축기의 인가주파수를 가변시키며 초기기동시킨다.Then, after detecting the load again after the predetermined time, it is determined whether there is a change in the detected load, that is, the indoor unit capacity. When the determination result is determined that the light load is less than 50% of the indoor unit capacity, which is reduced from the previous indoor unit capacity, the constant speed compressor is turned off. (off), and the initial frequency is started by varying the frequency applied to the inverter compressor.
그러나, 상기 판단결과, 실내기 용량이 50%이상이면 B구간에 도시된 바와 같이 상기 실내기의 용량 변동에 대응하여 인버터 압축기의 초기기동 주파수가 상승하는 시점에서 정속 압축기가 온되어, 상기 인버터 압축기와 정속 압축기가 동시에 온되어 실내기의 용량변동에 대응하여 빠르게 운전 사이클을 안정한 상태로 가지고 간다.However, as a result of the determination, if the indoor unit capacity is 50% or more, as shown in section B, the constant speed compressor is turned on at a time when the initial starting frequency of the inverter compressor increases in response to the variation of the capacity of the indoor unit, and the constant speed with the inverter compressor is fixed. The compressor is turned on at the same time and takes the operation cycle quickly in a stable state in response to the capacity change of the indoor unit.
여기서, 상기 소정시간후 부하를 재차 검출하는 이유는 각 룸의 사용자의 재설정 상태에 따라 실내기 용량이 변화될 수 있기 때문이다.Here, the reason for detecting the load again after the predetermined time is that the indoor unit capacity may change according to the reset state of the user of each room.
상기 B구간부터 운전을 시작한 정속형 압축기는 C~E구간까지 정속으로 기동하며, 인버터 압축기는 B구간동안 주파수를 상승시키며 기동하다가 C구간에 이르러 운전주파수에 도달한후 상기 운전 주파수를 유지하며 C~E구간을 운전한다.The constant speed type compressor, which started operation from section B, starts at constant speed from section C to E, and the inverter compressor starts up by increasing frequency during section B. After reaching section C, the operating frequency is maintained and C is maintained. Drive section ~ E.
이상에서 상세히 설명한 바와 같이 본 발명은 동시형 멀티공기조화기의 초기 기동시 부하를 검출하여 그 부하에 인버터 압축기를 40Hz로 일정시간 운전시킨후 그 40Hz에서 서서히 인가주파수를 운전주파수로 증가시키며 동시에 정속 압축기를 온시켜서 보다 빠르게 실내기 용량에 대응하는 안정적인 사이클로 운전될 수 있도록 하는 효과가 있다.As described in detail above, the present invention detects a load at the initial startup of the synchronous multi-air conditioner, operates the inverter compressor at 40 Hz for a predetermined time, and gradually increases the applied frequency to the operating frequency at the same time at 40 Hz. By turning on the compressor, it is possible to operate in a stable cycle corresponding to the indoor unit capacity more quickly.
도 1은 종래 동시형 멀티 공기조화기의 압축기 운전을 보인 예시도.1 is an exemplary view showing a compressor operation of a conventional simultaneous multi air conditioner.
도 2는 도 1에 있어서, 초기기동방법을 보인 예시도.2 is an exemplary view showing an initial startup method in FIG.
도 3은 본 발명 동시형 멀티공기조화기의 초기기동방법을 보인 흐름도.Figure 3 is a flow chart showing an initial start method of the present invention simultaneous multi-air conditioner.
도 4는 본 발명 동시형 멀티공기조화기의 초기기동방법을 보인 예시도.Figure 4 is an exemplary view showing an initial startup method of the present invention simultaneous multi-air conditioner.
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