KR20070007997A - Multi air conditioner heating and cooling simultaneously and indoor fan control method thereof - Google Patents

Multi air conditioner heating and cooling simultaneously and indoor fan control method thereof Download PDF

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KR20070007997A
KR20070007997A KR1020050062887A KR20050062887A KR20070007997A KR 20070007997 A KR20070007997 A KR 20070007997A KR 1020050062887 A KR1020050062887 A KR 1020050062887A KR 20050062887 A KR20050062887 A KR 20050062887A KR 20070007997 A KR20070007997 A KR 20070007997A
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indoor
air
unit
air volume
heating
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KR1020050062887A
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Korean (ko)
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KR100748525B1 (en
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박종한
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엘지전자 주식회사
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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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/40—Noise

Abstract

A heating and cooling multi air conditioner and an indoor fan control method thereof are provided to remarkably reduce coolant flow noise of an indoor unit when the indoor units are operated in a heating mode and a cooling mode. A heating and cooling multi air conditioner includes an outdoor unit, a plurality of indoor units, a distributor, an indoor fan(35), an air flow rate selection part(53), and a controller(51). The plurality of indoor units have indoor heat exchangers, respectively. The distributor is disposed between the outdoor unit and the indoor units to distribute cold air corresponding to an operation mode of each indoor unit. The indoor fan is disposed at one side of the indoor heat exchanger to vary its speed. The air flow rate selection part is installed at each indoor unit to select a flow rate of each indoor unit. The controller controls the indoor fan by using a first air flow mode and a second air flow mode. The first air flow mode operates the indoor fan in any one level of a plurality of selected flow rate levels. The second air flow mode operates the indoor fan in an increased number of flow rate levels when the indoor unit is operated to heat and cool the indoor space.

Description

냉난방 동시형 멀티 에어컨 및 그의 실내팬 제어방법{MULTI AIR CONDITIONER HEATING AND COOLING SIMULTANEOUSLY AND INDOOR FAN CONTROL METHOD THEREOF}MULTI AIR CONDITIONER HEATING AND COOLING SIMULTANEOUSLY AND INDOOR FAN CONTROL METHOD THEREOF

도 1은 종래의 냉난방 동시형 멀티 에어컨의 구성도,1 is a configuration diagram of a conventional air-conditioning simultaneous multi air conditioner,

도 2는 본 발명의 일 실시예에 따른 냉난방 동시형 멀티 에어컨의 제어블록도, 2 is a control block diagram of a simultaneous heating and cooling type multi air conditioner according to an embodiment of the present invention;

도 3은 본 발명의 일 실시예에 따른 냉난방 동시형 멀티 에어컨의 실내팬 제어방법을 설명하기 위한 도면이다. 3 is a view for explaining a method for controlling the indoor fan of the air-conditioning simultaneous multi air conditioner according to an embodiment of the present invention.

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

10 : 실외기 11 : 압축기10: outdoor unit 11: compressor

13 : 유로절환밸브 15 : 실외열교환기13: flow path switching valve 15: outdoor heat exchanger

30 : 실내기 31 : 실내열교환기30: indoor unit 31: indoor heat exchanger

35 : 실내팬 51 : 제어부35: indoor fan 51: control unit

53 : 풍량선택부53: air flow selector

본 발명은, 냉난방 동시형 멀티 에어컨 및 그의 실내팬 제어방법에 관한 것 으로서, 더욱 상세하게는, 냉난방 동시 운전 시 냉방운전되는 실내기의 소음 발생을 억제할 수 있도록 한 냉난방 동시형 멀티 에어컨 및 그의 실내팬 제어방법에 관한 것이다. The present invention relates to a simultaneous air-conditioning multi air conditioner and a method for controlling the indoor fan, and more particularly, to an air-conditioning simultaneous multi air conditioner and its indoors, which can suppress noise generation of an indoor unit that is air-operated during air-conditioning simultaneous operation. It relates to a fan control method.

도 1은 종래의 냉난방 동시형 멀티 에어컨의 구성도이다. 도시된 바와 같이, 냉난방 동시형 멀티 에어컨은, 각 실내를 냉방 또는 난방 할 수 있도록 배치되는 복수의 실내기(30)와, 각 실내기(30)에 냉매를 제공하는 실외기(10)와, 실내기(30) 및 실외기(10) 사이에 개재되어 실내기(30)의 운전 모드에 따라 냉매가 분배되도록 하는 분배기(40)를 구비하고 있다.1 is a block diagram of a conventional air-conditioning simultaneous multi air conditioner. As shown, the simultaneous heating and cooling multi-air conditioner includes a plurality of indoor units 30 arranged to cool or heat each room, an outdoor unit 10 that provides refrigerant to each indoor unit 30, and an indoor unit 30. And a distributor 40 interposed between the outdoor unit 10 and the outdoor unit 10 to distribute the refrigerant according to the operation mode of the indoor unit 30.

실내기(30)는, 냉매가 실내 공기와 열교환되면서 냉방 또는 난방 기능을 수행하는 실내열교환기(31)와, 각 실내열교환기(31)의 일측에 배치되는 실내팽창장치(33)와, 각 실내열교환기(31)의 일측에 실내열교환기(31)의 열교환이 촉진되도록 함과 아울러 열교환된 공기가 실내로 토출되도록 하는 실내팬(35)을 구비하고 있다.The indoor unit 30 includes an indoor heat exchanger 31 that performs cooling or heating while the refrigerant exchanges heat with indoor air, an indoor expansion device 33 disposed on one side of each indoor heat exchanger 31, and each indoor. One side of the heat exchanger 31 is provided with an indoor fan 35 to facilitate heat exchange of the indoor heat exchanger 31 and to discharge the heat-exchanged air into the room.

실외기(10)는, 냉매를 압축하는 압축기(11)와, 압축기(11)의 토출측에 배치되어 냉매의 유로를 절환하는 유로절환밸브(13)와, 냉매가 실외공기와 열교환되는 실외열교환기(15)를 구비하고 있다. The outdoor unit 10 includes a compressor 11 for compressing a refrigerant, a flow path switching valve 13 disposed on the discharge side of the compressor 11 to switch the flow path of the refrigerant, and an outdoor heat exchanger in which the refrigerant exchanges heat with the outdoor air ( 15).

압축기(11)의 흡입측에는 기체상태의 냉매가 제공될 수 있도록 어큐뮬레이터(12)가 설치되어 있으며, 실외열교환기(15)의 일측에는 열교환이 촉진될 수 있도록 실외팬(17)이 구비되어 있다. 냉매의 유동방향을 따라 실외열교환기(15)의 일측에는 체크밸브(23)를 구비한 우외유로(21)와 실외팽창장치(19)가 설치되어 있다.An accumulator 12 is installed on the suction side of the compressor 11 to provide a gaseous refrigerant, and an outdoor fan 17 is provided on one side of the outdoor heat exchanger 15 to facilitate heat exchange. One side of the outdoor heat exchanger 15 along the flow direction of the refrigerant is provided with a right outer flow passage 21 and an outdoor expansion device 19 having a check valve 23.

한편, 분배기(40)는, 일단은 압축기(11)의 토출측에 연결되고 타측은 복수로 분기된 고압기관부(41)와, 일단은 압축기(11)의 흡입측에 연결되고 타측은 복수로 분기된 저압기관부(45)와, 일측은 실외열교환기(15)측에 연결되고 타측은 복수로 분기되어 각 실내기(30)에 연결되는 고압액관부(43)를 구비하고 있다. 분기된 각 고압액관부(43) 및 저압기관부(45)에는 해당 유로를 각각 개폐할 수 있도록 복수의 고압밸브(42) 및 저압밸브(46)가 각각 설치디어 있다. On the other hand, the distributor 40, one end is connected to the discharge side of the compressor 11, the other side is divided into a plurality of high-pressure engine part 41, one end is connected to the suction side of the compressor 11, the other side is branched into a plurality The low pressure engine section 45 and one side is connected to the outdoor heat exchanger 15 side and the other side is provided with a high pressure liquid pipe section 43 which is branched into a plurality and connected to each indoor unit 30. A plurality of high pressure valves 42 and low pressure valves 46 are provided in each of the branched high pressure liquid pipe part 43 and the low pressure engine part 45 so as to open and close the respective flow paths.

이러한 구성에 의하여, 각 실내기(30) 중 일부는 냉방운전되고 일부는 난방운전되며 냉방운전되는 실내기(30)의 수가 더 많은 냉난방 동시 운전 시, 유로절환밸브(13)는 압축기(11)에서 토출된 냉매가 실외열교환기(15)로 유동되도록 유로를 절환한다.By this configuration, during the simultaneous heating and cooling operation in which the number of the indoor units 30 of some indoor units 30 are cooled and some are heated and cooled, the flow path switching valve 13 is discharged from the compressor 11. The flow path is switched so that the refrigerant flows to the outdoor heat exchanger (15).

한편, 냉방운전되는 실내기(30)에 연결되는 저압밸브(46)는 개방되고 고압밸브(42)는 차단되며, 난방운전되는 실내기(30)에 연결되는 저압밸브(46)는 차단되고 고압밸브(42)는 개방된다.On the other hand, the low pressure valve 46 is connected to the indoor unit 30 is cooled and opened and the high pressure valve 42 is blocked, the low pressure valve 46 is connected to the indoor unit 30 is heated and shut off and the high pressure valve ( 42 is opened.

고압기관부(41)를 따라 유동된 냉매는 난방운전되는 실내열교환기(31)로 유입되어 실내공기와 열교환되면서 난방기능을 수행하고, 난방기능을 수행한 냉매는 실외열교환기(15)를 경유한 냉매와 합류되어 냉방운전되는 실내기(30)로 유입된다. 냉방운전되는 실내기(30)로 유입된 냉매는 실내팽창장치(33)를 통과하면서 감압팽창되고 실내열교환기(31)에서 열교환되면서 냉방기능을 수행하게 된다. 냉방기능을 수행한 냉매는 저압기관부(45)를 따라 유동되어 어큐뮬레이터(12)로 유입되고, 어큐뮬레이터(12)의 내부의 기체상태의 냉매는 압축기(11)로 흡입되어 압축 및 토 출되는 과정을 반복하게 된다. The refrigerant flowing along the high-pressure engine part 41 flows into the indoor heat exchanger 31 that is heated and heat-exchanges with the indoor air to perform the heating function, and the refrigerant that performs the heating function passes through the outdoor heat exchanger 15. Joined with a refrigerant flows into the indoor unit (30) for cooling operation. The refrigerant introduced into the indoor unit 30 being cooled is expanded under reduced pressure while passing through the indoor expansion device 33 and heat-exchanged in the indoor heat exchanger 31 to perform a cooling function. The refrigerant that performs the cooling function flows along the low pressure engine part 45 and flows into the accumulator 12, and the gaseous refrigerant inside the accumulator 12 is sucked into the compressor 11 to be compressed and discharged. Will be repeated.

그런데, 이러한 종래의 냉난방 동시형 멀티 에어컨에 있어서는, 각 실내기(30)에 구비된 실내팬(35)은 냉방운전, 난방운전 또는 냉난방 동시운전에 관계없이 선택된 풍량모드, 예를 들면 "강", "중", "약" 중 어느 하나에 대응되게 일정한 풍량을 토출하도록 구성되어 있어, 냉난방 동시 운전 시 난방운전되는 실내기(30)의 실내열교환기(31)를 경유한 냉매가 충분한 과냉도를 확보하지 못하게 되면 냉방운전되는 실내기(30)로 유동되는 동안 배관의 압력 손실 등에 기인하여 2상 냉매, 즉 기액상태의 냉매로 되어 냉방운전되는 실내기(30)의 냉방 성능이 저하될 뿐만 아니라 소음을 유발하게 된다고 하는 문제점이 있다. By the way, in the conventional air-conditioning simultaneous multi air conditioner, the indoor fan 35 provided in each indoor unit 30 is selected regardless of the cooling operation, the heating operation or the simultaneous heating and cooling operation mode, for example, "strong", It is configured to discharge a constant air volume corresponding to any one of "medium" and "weak", so that the refrigerant passing through the indoor heat exchanger 31 of the indoor unit 30 which is heated and operated during simultaneous heating and cooling operation ensures sufficient supercooling degree. If not, the cooling performance of the indoor unit 30 being cooled and deteriorated as a two-phase refrigerant, that is, a gas-liquid state, is reduced due to the pressure loss of the pipe during the flow to the indoor unit 30 being cooled and not only causes noise. There is a problem that will be.

따라서, 본 발명의 목적은, 냉난방 동시 운전 시 냉방운전되는 실내기의 소음 발생을 억제할 수 있는 냉난방 동시형 멀티 에어컨 및 그의 실내팬 제어방법을 제공하는 것이다. Accordingly, it is an object of the present invention to provide a cooling and heating simultaneous multi air conditioner and an indoor fan control method thereof capable of suppressing the generation of noise of an indoor unit that is air-cooled during the simultaneous heating and cooling operation.

상기 목적은, 본 발명에 따라, 실외기와, 실내열교환기를 각각 구비한 복수의 실내기와, 상기 실외기 및 상기 실내기 사이에 배치되어 상기 각 실내기의 운전 모드에 대응되게 냉매가 분배되도록 하는 분배기를 구비한 냉난방 동시형 멀티 에어컨에 있어서, 속도 가변이 가능하며 상기 실내열교환기의 일측에 각각 배치되는 실내팬과; 상기 각 실내기의 풍량을 선택할 수 있도록 상기 각 실내기에 구비되는 풍량선택부와; 상기 실내기의 냉방 또는 난방 운전 시 상기 풍량선택부에 의해 선 택된 복수의 풍량 레벨 중 어느 하나로 상기 실내팬이 운전되도록 하는 제1풍량모드와, 상기 실내기가 냉방 및 난방으로 동시 운전되는 경우 상기 제1풍량모드의 각 풍량 레벨에 비해 소정 폭 증가된 복수의 풍량 레벨로 상기 실내팬이 운전되는 제2풍량모드를 가지고 상기 실내팬을 제어하는 제어부를 포함하는 것을 특징으로 하는 냉난방 동시형 멀티 에어컨에 의해 달성된다. The object of the present invention is to provide an outdoor unit, a plurality of indoor units each provided with an indoor heat exchanger, and a distributor disposed between the outdoor unit and the indoor unit to distribute refrigerant to correspond to an operation mode of each indoor unit. In the air-conditioning simultaneous multi air conditioner, the speed is variable and the indoor fan is disposed on each side of the indoor heat exchanger; An air volume selecting unit provided in each indoor unit to select an air volume of each indoor unit; A first air volume mode that allows the indoor fan to operate at any one of a plurality of air flow levels selected by the air flow selector during the cooling or heating operation of the indoor unit, and the first air flow when the indoor unit is operated by cooling and heating simultaneously And a control unit for controlling the indoor fan to have a second air volume mode in which the indoor fan is operated at a plurality of air volume levels which are increased by a predetermined width relative to each air volume level in the air volume mode. Is achieved.

여기서, 상기 제2풍량모드의 각 풍량 레벨은 상기 제1풍량모드의 각 풍량 레벨에 비해 10% 내지 20% 증가된 풍량을 가지도록 구성되는 것이 바람직하다.Here, each air volume level of the second air volume mode is preferably configured to have a flow rate of 10% to 20% increased compared to each air volume level of the first air volume mode.

한편, 본 발명의 다른 분야에 따르면, 실외기와, 실내열교환기와 속도 가변이 가능한 실내팬을 각각 구비한 복수의 실내기와, 상기 실외기 및 상기 실내기 사이에 배치되어 상기 각 실내기의 운전 모드에 대응되게 냉매가 분배되도록 하는 분배기를 구비한 냉난방 동시형 멀티 에어컨의 실내팬 제어방법에 있어서, 냉방 및 난방 동시 운전 여부를 확인하는 단계와; 냉방 및 난방 동시 운전 시 난방 운전되는 각 실내기의 풍량을 확인하는 단계와; 상기 난방 운전되는 각 실내기의 선택된 풍량에 비해 소정 폭 증가된 풍량으로 상기 각 실내팬이 회전되도록 상기 각 실내팬을 제어하는 단계를 포함하는 것을 특징으로 하는 냉난방 동시형 멀티 에어컨의 실내팬 제어방법이 제공된다. Meanwhile, according to another field of the present invention, an indoor unit, a plurality of indoor units each having an indoor heat exchanger and an indoor fan having a variable speed, and disposed between the outdoor unit and the indoor unit are refrigerants corresponding to the operation modes of the indoor units. An indoor fan control method of an air-conditioning simultaneous multi air conditioner having a distributor for distributing a gas, the method comprising: checking whether cooling and heating are simultaneously performed; Checking the air volume of each indoor unit that is heated by heating and simultaneously cooling and heating; The indoor fan control method of the air-conditioning simultaneous multi-air conditioner comprising the step of controlling each of the indoor fan so that each indoor fan is rotated by a predetermined amount of air flow increased compared to the selected air flow rate of each indoor unit being heated. Is provided.

여기서, 상기 각 실내팬을 제어하는 단계에서 상기 각 실내팬은 냉방 또는 난방 운전 시 풍량에 비해 10% 내지 20% 증가된 풍량으로 회전되도록 하는 것이 바람직하다.In the controlling of the indoor fans, the indoor fans may be rotated at 10% to 20% increased air volume compared to the air volume during the cooling or heating operation.

이하, 첨부된 도면을 참조하여 본 발명에 대해 상세히 설명한다. Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

도 2는 본 발명의 일 실시예에 따른 냉난방 동시형 멀티 에어컨의 제어블록도이고, 도 3은 본 발명의 일 실시예에 따른 냉난방 동시형 멀티 에어컨의 실내팬 제어방법을 설명하기 위한 도면이다. 전술 및 도시한 구성과 동일 및 동일 상당부분에 대해서는 도면 설명의 편의 상 도시를 생략하고 동일한 참조부호를 인용하여 설명하기로 한다. 도 2에 도시된 바와 같이, 본 냉난방 동시형 멀티 에어컨은, 속도 가변이 가능하며 실내열교환기(31)의 일측에 각각 배치되는 실내팬(35)과; 각 실내기(30)의 풍량을 선택할 수 있도록 각 실내기(30)에 구비되는 풍량선택부(53)와; 실내기(30)의 냉방 또는 난방 운전 시 풍량선택부(53)에 의해 선택된 복수의 풍량 레벨 중 어느 하나로 실내팬(35)이 운전되도록 하는 제1풍량모드와, 실내기(30)가 냉방 및 난방으로 동시 운전되는 경우 제1풍량모드의 각 풍량 레벨에 비해 소정 폭 증가된 복수의 풍량 레벨로 실내팬(35)이 운전되는 제2풍량모드를 가지고 실내팬(35)을 제어하는 제어부(51)를 포함하여 구성되어 있다.Figure 2 is a control block diagram of a simultaneous air-conditioning multi-type air conditioner according to an embodiment of the present invention, Figure 3 is a view for explaining a method for controlling the indoor fan of the air-conditioning simultaneous multi-type air conditioner according to an embodiment of the present invention. The same and equivalent parts as those described above and shown in the drawings will be omitted for convenience of description and will be described with reference to the same reference numerals. As shown in FIG. 2, the present air-conditioning simultaneous multi air conditioner includes: an indoor fan 35 capable of varying speed and disposed at one side of an indoor heat exchanger 31; An air volume selecting unit 53 provided in each indoor unit 30 so as to select an air volume of each indoor unit 30; A first air volume mode for operating the indoor fan 35 to any one of a plurality of air volume levels selected by the air volume selector 53 during the cooling or heating operation of the indoor unit 30, and the indoor unit 30 is cooled and heated In case of simultaneous operation, the control unit 51 controls the indoor fan 35 with the second air volume mode in which the indoor fan 35 is operated at a plurality of air volume levels which are increased by a predetermined width relative to each air volume level in the first air volume mode. It is configured to include.

각 실내기(30)에는 속도를 가변할 수 있도록 구성된 실내팬(35)과, 각 실내기(30)에서 토출되는 풍량을 선택할 수 있도록 복수의 풍량 레벨, 예를 들면, 풍량 "강", "중", "약" 중 어느 하나를 선택할 수 있도록 풍량선택부(53)가 각각 구비되어 있다. Each indoor unit 30 includes an indoor fan 35 configured to vary the speed, and a plurality of air volume levels, for example, the air volume "strong" and "medium", to select a quantity of air discharged from each indoor unit 30. And a quantity of air flow selector 53 are provided so that any one of "about " can be selected.

한편, 제어부(51)는 통상 제어프로그램이 구비된 마이컴의 형태로 구현되며, 압축기(11)와 유로절환밸브(13) 및 실외팽창장치(19)와, 실외팬(17) 등 실외기(10)의 구성요소를 제어하는 실외기제어부(52a)와 각 실내기(30)의 실내팽창장치(33) 및 실내팬(35) 등을 제어하는 실내기제어부(52b)로 구성된다.On the other hand, the control unit 51 is usually implemented in the form of a microcomputer equipped with a control program, the outdoor unit 10 such as the compressor 11, the flow path switching valve 13 and the outdoor expansion device 19, the outdoor fan 17, etc. The outdoor unit control unit 52a for controlling the components of the indoor unit 30 and the indoor unit control unit 52b for controlling the indoor expansion device 33, the indoor fan 35 and the like of each indoor unit 30.

제어부(51)에는 각 실내기(30)의 운전 형태에 따라 각 실내팬(35)이 서로 다른 풍량모드로 구동될 수 있도록 풍량선택부(53) 및 실내팬(35)이 각각 전기적으로 연결되어 있다.The air volume selector 53 and the indoor fan 35 are electrically connected to the controller 51 so that each indoor fan 35 can be driven in a different air volume mode according to the operation type of each indoor unit 30. .

여기서, 각 실내팬(35)의 풍량모드는 각 실내기(30)의 풍량선택부(53) 또는 운전모드에 따라 결정된 강, 중, 약 중 어느 하나로 실내팬(35)이 구동되는 제1풍량모드와, 실내기(30) 중 일부는 냉방운전되고 일부는 난방운전되는 냉난방 동시 운전 시 난방운전되는 실내기(30)의 실내열교환기(31)를 경유한 냉매의 충분한 과열도가 확보될 수 있도록 실내팬(35)의 풍량이 제1풍량모드의 각 풍량레벨에 비해 소정 폭 증가된 풍량레벨을 가지도록 실내팬(35)이 구동되는 제2풍량모드로 구성되어 있다. 여기서, 제2풍량모드의 각 풍량레벨, 즉 제2풍량모드의 풍량 "강", "중", "약"은, 난방운전되는 실내열교환기(31)를 경유한 냉매의 과열도가 충분히 확보되도록 함과 아울러 사용자가 풍량의 증가를 거의 느끼지 못하도록 제1풍량모드의 풍량 "강", "중", "약"에 비해 대략 풍량이 10% 내지 20% 각각 증가된 풍량을 가지도록 구성하는 것이 바람직하다. Here, the airflow mode of each indoor fan 35 is a first airflow mode in which the indoor fan 35 is driven by any one of the airflow selector 53 of each indoor unit 30 or the steel, medium, or about determined according to the operation mode. And, the indoor fan so that some of the indoor unit 30 is air-cooled, and some of the indoor unit 30 to ensure sufficient superheat of the refrigerant via the indoor heat exchanger 31 of the indoor unit 30 is heated during the simultaneous heating and cooling operation The air volume of (35) is constituted by the second air volume mode in which the indoor fan 35 is driven so as to have the air volume level which is increased by a predetermined width relative to each air volume level in the first air volume mode. Here, each of the air volume levels in the second air volume mode, that is, the air volumes "strong", "medium", and "weak" in the second air volume mode, ensures sufficient superheat of the refrigerant via the indoor heat exchanger 31 that is heated. In addition, the air flow rate may be configured to have an approximately 10% to 20% increase in the air flow, respectively, compared to the air flows "strong", "medium", and "weak" in the first airflow mode so that the user hardly feels the increase in the airflow. desirable.

이러한 장치적 특성을 가지는 본 발명에 따른 냉난방 동시형 멀티 에어컨의 실내팬 제어방법을 도 3을 참조하여 설명하면 다음과 같다.The indoor fan control method of the air-conditioning simultaneous multi air conditioner according to the present invention having such a device characteristic will be described with reference to FIG. 3.

먼저 제어부(51)는, 각 실내기(30)로부터 운전신호를 수신하고(S10), 냉난방 동시 운전 여부를 확인한다(S20). 각 실내기(30)가 모두 냉방운전되거나 모두 난방운전되는 경우(S20), 제어부(51)는 제1풍량모드의 풍량레벨 중 어느 하나로 각 실내팬(35)이 회전되도록 한다(S30).First, the control unit 51 receives a driving signal from each indoor unit 30 (S10), and confirms whether the simultaneous heating and cooling operation (S20). When each indoor unit 30 is all cooled or all heated (S20), the controller 51 causes each indoor fan 35 to be rotated to one of the airflow levels in the first airflow mode (S30).

한편, 냉난방 동시 운전인 경우(S20), 제어부(51)는 난방운전되는 각 실내기(30)의 실내팬(35)의 선택된 풍량을 확인하고(S40), 선택된 풍량이 "강" 인 경우(S50) 제2풍량모드의 "강"으로 해당 실내팬(35)이 회전되도록 한다(S60).On the other hand, in the case of simultaneous heating and cooling operation (S20), the control unit 51 checks the selected air volume of the indoor fan 35 of each indoor unit 30 being heated and operated (S40), and if the selected air volume is "strong" (S50) The indoor fan 35 is rotated to "strong" in the second air volume mode (S60).

선택된 풍량이 "중"인 경우(S70) 해당 실내팬(35)이 제2풍량모드의 "중"으로 회전되도록 하고(S80), 선택된 풍량이 "약"인 경우(S70) 해당 실내팬(35)은 제2풍량모드의 "약"으로 회전구동되도록 한다(S90). 각 실내기(30)의 운전종료 신호가 입력되지 아니하면(S100) 전술한 과정(S10~S90)을 반복하여 수행되도록 한다. When the selected air volume is "medium" (S70), the indoor fan 35 is rotated to "medium" in the second air volume mode (S80), and when the selected air volume is "weak" (S70), the indoor fan 35 ) Rotates to "about" of the second air volume mode (S90). If the operation end signal of each indoor unit 30 is not input (S100) to repeat the above-described process (S10 ~ S90).

이상 설명한 바와 같이, 본 발명에 따르면, 속도 가변이 가능하며 실내열교환기의 일측에 각각 배치되는 실내팬과; 각 실내기의 풍량을 선택할 수 있도록 각 실내기에 구비되는 풍량선택부와; 실내기의 냉방 또는 난방 운전 시 풍량선택부에 의해 선택된 복수의 풍량 레벨 중 어느 하나로 실내팬이 운전되도록 하는 제1풍량모드와, 실내기가 냉방 및 난방으로 동시 운전되는 경우 제1풍량모드의 각 풍량 레벨에 비해 소정 폭 증가된 복수의 풍량 레벨로 실내팬이 운전되는 제2풍량모드를 가지고 실내팬을 제어하는 제어부를 포함하도록 함으로써, 냉난방 동시 운전 시 냉방운전되는 실내기의 소음 발생을 억제할 수 있는 냉난방 동시형 멀티 에어컨이 제공된다. As described above, according to the present invention, an indoor fan capable of varying speed and disposed on one side of an indoor heat exchanger; An air volume selecting unit provided in each indoor unit to select an air volume of each indoor unit; The first air volume mode for operating the indoor fan at any one of the plurality of air volume levels selected by the air flow selector during the cooling or heating operation of the indoor unit, and the respective air volume levels in the first air volume mode when the indoor unit is operated by cooling and heating at the same time. Compared with the second air volume mode in which the indoor fan is operated at a plurality of air volume levels increased by a predetermined width compared to the control unit for controlling the indoor fan, air conditioning that can suppress the generation of noise of the indoor unit that is operated during the cooling and heating simultaneous operation Simultaneous multi air conditioning is provided.

또한, 본 발명에 따른 냉난방 동시형 멀티 에어컨은 냉난방 동시 운전 시 냉방운전되는 실내기의 냉매 유동 소음을 현저하게 줄일 수 있어 아파트 등의 주거지역에 설치가 가능한 이점이 있다. In addition, the simultaneous heating and cooling multi-type air conditioner according to the present invention can significantly reduce the refrigerant flow noise of the indoor unit that is air-conditioned during the heating and cooling simultaneous operation has the advantage that can be installed in a residential area, such as an apartment.

또한, 본 발명에 따르면, 냉방 및 난방 동시 운전 여부를 확인하는 단계와; 냉방 및 난방 동시 운전 시 난방 운전되는 각 실내기의 풍량을 확인하는 단계와; 난방 운전되는 각 실내기의 선택된 풍량에 비해 소정 폭 증가된 풍량으로 각 실내팬이 회전되도록 각 실내팬을 제어하는 단계를 포함하도록 함으로써, 냉난방 동시 운전 시 냉방운전되는 실내기의 소음 발생을 억제할 수 있는 냉난방 동시형 멀티 에어컨의 실내팬 제어방법이 제공된다. In addition, according to the invention, the step of checking whether the cooling and heating at the same time operation; Checking the air volume of each indoor unit that is heated by heating and simultaneously cooling and heating; By controlling each indoor fan so that the indoor fan is rotated by a predetermined amount of air flow increased compared to the selected air flow rate of each indoor unit being heated, it is possible to suppress the generation of noise of the indoor unit that is air-cooled during the simultaneous heating and cooling operation Provided are a method for controlling an indoor fan of a simultaneous air-conditioning multi air conditioner.

Claims (4)

실외기와, 실내열교환기를 각각 구비한 복수의 실내기와, 상기 실외기 및 상기 실내기 사이에 배치되어 상기 각 실내기의 운전 모드에 대응되게 냉매가 분배되도록 하는 분배기를 구비한 냉난방 동시형 멀티 에어컨에 있어서,In the air-conditioning simultaneous multi air conditioner having an outdoor unit, a plurality of indoor units each provided with an indoor heat exchanger, and a distributor arranged between the outdoor unit and the indoor unit to distribute the refrigerant in correspondence to the operation mode of each indoor unit, 속도 가변이 가능하며 상기 실내열교환기의 일측에 각각 배치되는 실내팬과;An indoor fan capable of varying speed and disposed at one side of the indoor heat exchanger; 상기 각 실내기의 풍량을 선택할 수 있도록 상기 각 실내기에 구비되는 풍량선택부와;An air volume selecting unit provided in each indoor unit to select an air volume of each indoor unit; 상기 실내기의 냉방 또는 난방 운전 시 상기 풍량선택부에 의해 선택된 복수의 풍량 레벨 중 어느 하나로 상기 실내팬이 운전되도록 하는 제1풍량모드와, 상기 실내기가 냉방 및 난방으로 동시 운전되는 경우 상기 제1풍량모드의 각 풍량 레벨에 비해 소정 폭 증가된 복수의 풍량 레벨로 상기 실내팬이 운전되는 제2풍량모드를 가지고 상기 실내팬을 제어하는 제어부를 포함하는 것을 특징으로 하는 냉난방 동시형 멀티 에어컨. A first air volume mode that allows the indoor fan to operate at any one of a plurality of air volume levels selected by the air flow selector during the cooling or heating operation of the indoor unit, and the first air volume when the indoor unit is operated by cooling and heating simultaneously And a control unit for controlling the indoor fan with a second air volume mode in which the indoor fan is operated at a plurality of air volume levels increased by a predetermined width relative to each air volume level of the mode. 제1항에 있어서,The method of claim 1, 상기 제2풍량모드의 각 풍량 레벨은 상기 제1풍량모드의 각 풍량 레벨에 비해 10% 내지 20% 증가된 풍량을 가지도록 구성되는 것을 특징으로 하는 냉난방 동시형 멀티 에어컨. Each airflow level of the second airflow mode is configured to have a flow rate of 10% to 20% increased compared to each airflow level of the first airflow mode multi-air conditioner. 실외기와, 실내열교환기와 속도 가변이 가능한 실내팬을 각각 구비한 복수의 실내기와, 상기 실외기 및 상기 실내기 사이에 배치되어 상기 각 실내기의 운전 모드에 대응되게 냉매가 분배되도록 하는 분배기를 구비한 냉난방 동시형 멀티 에어컨의 실내팬 제어방법에 있어서,An outdoor unit, a plurality of indoor units each having an indoor heat exchanger and a variable speed fan, and air conditioners equipped with a distributor arranged between the outdoor unit and the indoor unit to distribute refrigerant to correspond to an operation mode of each indoor unit. In the indoor fan control method of the type multi air conditioner, 냉방 및 난방 동시 운전 여부를 확인하는 단계와;Confirming whether cooling and heating are operated simultaneously; 냉방 및 난방 동시 운전 시 난방 운전되는 각 실내기의 풍량을 확인하는 단계와;Checking the air volume of each indoor unit that is heated by heating and simultaneously cooling and heating; 상기 난방 운전되는 각 실내기의 선택된 풍량에 비해 소정 폭 증가된 풍량으로 상기 각 실내팬이 회전되도록 상기 각 실내팬을 제어하는 단계를 포함하는 것을 특징으로 하는 냉난방 동시형 멀티 에어컨의 실내팬 제어방법. And controlling each of the indoor fans to rotate the indoor fans with a predetermined amount of air increased by a predetermined amount of air compared to the selected air flow rate of each indoor unit that is operated by heating. 제3항에 있어서,The method of claim 3, 상기 각 실내팬을 제어하는 단계에서 상기 각 실내팬은 냉방 또는 난방 운전 시 풍량에 비해 10% 내지 20% 증가된 풍량으로 회전되도록 하는 것을 특징으로 하는 냉난방 동시형 멀티 에어컨의 실내팬 제어방법. In the step of controlling each indoor fan, the indoor fan control method of the air-conditioning simultaneous multi-air conditioner, characterized in that each of the indoor fan is rotated by the air volume increased by 10% to 20% compared to the air volume during the cooling or heating operation.
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