KR100524717B1 - Cooling/heating valve switching method for multi-type air conditioner in using cooling /heating the same time - Google Patents
Cooling/heating valve switching method for multi-type air conditioner in using cooling /heating the same time Download PDFInfo
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- KR100524717B1 KR100524717B1 KR10-2003-0024457A KR20030024457A KR100524717B1 KR 100524717 B1 KR100524717 B1 KR 100524717B1 KR 20030024457 A KR20030024457 A KR 20030024457A KR 100524717 B1 KR100524717 B1 KR 100524717B1
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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
- 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
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
- F24F11/67—Switching between heating and cooling modes
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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
- F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing valves
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
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- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
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- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
본 발명은 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 관한 것으로, 운전모드의 변경시, 분배기의 고압밸브와 저압밸브를 소정 시간동안 온/오프를 반복하여 절환함으로써, 배관의 압력차에 의한 배관의 진동과 냉매 유동소음을 방지하도록 한 것이다. 이를 위하여 본 발명은 3배관 방식 냉난방 동시형 멀티에어컨에 있어서, 사용자에 의해 임의의 실내기에 전원이 공급되면, 실내기의 운전모드가 냉방모드 또는 난방모드로 선택되었는지를 판단하는 과정과; 상기 판단결과, 실내기의 운전모드가 냉방모드이면, 실내기에 연결된 밸브의 고압밸브를 오픈,저압밸브를 클로우즈시키고, 실내기의 운전모드가 난방모드이면, 실내기에 연결된 밸브의 고압밸브를 클로우즈, 저압밸브를 오픈시키는 과정과; 상기 실내기의 운전모드가 냉방모드에서 난방모드로 변경되면, 상기 저압밸브 및 고압밸브를 펄스신호로 제어하여, 저압밸브를 소정 시간 동안 온/오프를 반복하여 클로우즈 시킴과 동시에 고압밸브도 소정 시간 동안 온/오프를 반복하여 오픈시키고, 상기 실내기의 운전모드가 난방모드에서 냉방모드로 변경되면, 고압밸브 및 저압밸브를 펄스신호로 제어하여, 고압밸브를 소정 시간 동안 온/오프를 반복하여 클로우즈 시킴과 동시에 저압밸브도 소정 시간동안 온/오프를 반복하여 오픈시키는 과정으로 이루어진다.The present invention relates to a cooling / heating valve switching method of a multi-air conditioner for both air conditioning and heating. When the operation mode is changed, the high pressure valve and the low pressure valve of the distributor are repeatedly switched on and off for a predetermined time, thereby reducing the pressure difference in the pipe. It is to prevent the vibration of the pipe and noise flow by the refrigerant. To this end, the present invention is a three-pipe air-conditioning simultaneous air-conditioning multi-air conditioner, if the power is supplied to any indoor unit by the user, determining whether the operating mode of the indoor unit is selected as the cooling mode or heating mode; As a result of the determination, when the operation mode of the indoor unit is the cooling mode, the high pressure valve of the valve connected to the indoor unit is opened and the low pressure valve is closed. When the operation mode of the indoor unit is the heating mode, the high pressure valve of the valve connected to the indoor unit is closed and the low pressure valve is closed. Opening the process; When the operation mode of the indoor unit is changed from the cooling mode to the heating mode, the low pressure valve and the high pressure valve are controlled by a pulse signal, and the low pressure valve is closed on and off repeatedly for a predetermined time and the high pressure valve is also operated for a predetermined time. When the on / off is repeatedly opened and the operation mode of the indoor unit is changed from the heating mode to the cooling mode, the high pressure valve and the low pressure valve are controlled by a pulse signal to close and close the high pressure valve repeatedly for a predetermined time. At the same time, the low pressure valve is made of a process of repeatedly opening the on / off for a predetermined time.
Description
본 발명은 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 관한 것으로, 특히 운전모드의 변경시, 분배기의 고압밸브와 저압밸브를 소정 시간동안 온/오프를 반복하여 절환함으로써, 배관의 압력차에 의한 배관의 진동과 냉매 유동소음을 방지하도록 한 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 관한 것이다.The present invention relates to a method for switching a cooling / heating valve of a multi-air conditioner for simultaneous use of heating and cooling. In particular, when the operation mode is changed, the pressure difference between pipes is repeatedly switched on and off for a predetermined time. The present invention relates to a cooling / heating valve switching method of a multi-air conditioner for simultaneous cooling and heating to prevent vibration of a pipe and noise of refrigerant flow by the pipe.
일반적으로, 공기조화기는, 주거공간, 레스토랑, 또는 사무실 등의 실내 공간을 냉방 또는 난방시키기 위한 장치로서, 오늘날에는 다수의 룸으로 구획된 실내공간을 보다 효율적으로 냉방 또는 난방시키기 위해 각 룸을 냉방 또는 난방운전시키는 멀티공기조화기의 개발이 지속적으로 이루어지고 있는 추세에 있다.In general, an air conditioner is a device for cooling or heating an indoor space such as a living space, a restaurant, or an office, and today, each room is cooled in order to more efficiently cool or heat an indoor space divided into a plurality of rooms. Or the development of a multi-air conditioner for heating operation is continuously made.
특히, 이러한 멀티공기조화기는, 한 대의 실외기에 다수대의 실내기가 연결되어 각각의 실내기가 각 룸에 설치되는 형태로 이루어져, 난방과 냉방 중 어느 하나의 운전모드로 동작되어 실내를 공기조화시키게 된다. In particular, such a multi-air conditioner, a plurality of indoor units are connected to one outdoor unit, and each indoor unit is installed in each room, thereby operating in any one operation mode of heating and cooling to air condition the room.
그러나, 실내에 구획된 여러 룸 중, 어느 룸은 난방이 필요하고 다른 어느 룸은 냉방이 필요한 경우에 있어서도, 냉방모드 혹은 난방모드로 기기가 일률적으로 운전되기 때문에, 이러한 요구에 대응하지 못하는 한계가 있었다.However, even when several rooms are partitioned indoors, one room needs to be heated and the other room needs to be cooled, so that the equipment is operated in the cooling mode or the heating mode in a uniform manner, so there is a limit to failing to meet these requirements. there was.
이러한 한계를 극복하기 위하여, 냉방과 난방을 동시에 수행하여 각 룸을 개별적으로 운전시키는 냉난방 동시형 멀티 공기조화기가 개발되었는데, 이러한 냉난방 동시형 멀티 공기조화기를, 도1을 참조하여 간략히 설명한다.In order to overcome this limitation, a simultaneous heating and cooling simultaneous air conditioner multi air conditioner has been developed to operate each room individually by simultaneously performing cooling and heating, and this air-conditioning simultaneous multi air conditioner will be briefly described with reference to FIG.
도 1은 일반적인 냉난방 동시겸용 멀티공기조화기의 구성을 보인 예시도이다. 1 is an exemplary view showing the configuration of a general air-conditioning simultaneous multi-air conditioner.
도1에 도시된 바와같이, 실외기(A)와 분배기(B) 그리고 다수개의 실내기(C)로 크게 이루어진다.As shown in FIG. 1, the outdoor unit A, the distributor B, and the plurality of indoor units C are large.
상기 실외기(A)에는 압축기(1)와 실외열교환기(2) 등이 설치되고, 상기 분배기(B)에는 제어수단(미도시)과 기액분리기(10) 및 안내배관부(20) 등이 설치되며, 상기 각 실내기(C)에는 실내열교환기(62)와 전자팽창밸브(61) 등이 각각 설치된다.The outdoor unit (A) is provided with a compressor (1) and an outdoor heat exchanger (2) and the like, and the distributor (B) is provided with a control means (not shown), a gas-liquid separator 10 and a guide pipe 20, etc. Each indoor unit (C) is provided with an indoor heat exchanger (62) and an electromagnetic expansion valve (61).
상기 실외기(A)로부터 유입된 냉매가, 부분부하(냉방 또는 난방 실내기가 적은 경우)ㆍ냉방 주체운전ㆍ난방주체운전등의 운전조건에 따라, 상기 다수대의 실내기 (C)에 선택적으로 분배기(B)를 통해 선택적으로 분배된다.The refrigerant introduced from the outdoor unit A is selectively distributed to the plurality of indoor units C according to the operating conditions such as partial load (when the cooling or heating indoor unit is small), cooling main body operation, heating main body operation, or the like. Is optionally distributed through).
이때, 상기실외기와 분배기는 3배관으로 연결되고, 이 배관은 각각 고압기체배관, 저압기체배관, 고압액체배관으로 구성된다.At this time, the outdoor unit and the distributor are connected by three pipes, each of the pipes is composed of a high pressure gas pipe, a low pressure gas pipe, a high pressure liquid pipe.
상기 배관들은, 분배기에서 헤더등을 사용하여, 도2와 같이 연결되는데, 이때 각 실내기에는 두개의 배관이 연결된다.The pipes are connected as shown in FIG. 2 by using a header or the like in the distributor, where two pipes are connected to each indoor unit.
즉, 냉방인 실내기는, 고압액체배관과 저압기체배관, 난방인 실내기는 고압기체배관과 고압액체 배관으로 연결되는데, 이러한 고압기체 배관과 저압기체 배관의 선택적인 연결을 고압밸브와 저압밸브로 이루어진 밸브가 수행한다.That is, the indoor unit that is cooled down is connected to the high pressure liquid pipe and the low pressure gas pipe, and the indoor unit that is heated is connected to the high pressure gas pipe and the high pressure liquid pipe. The selective connection between the high pressure gas pipe and the low pressure gas pipe consists of a high pressure valve and a low pressure valve. The valve performs.
상기 밸브가 냉방과 난방으로 절환될 때, 고압밸브와 저압밸브의 오픈/클로우즈 동작시, 순간적으로 고압밸브와 저압밸브가 유통되어 압력의 변동이 발생하게 된다.When the valve is switched to cooling and heating, during the open / close operation of the high pressure valve and the low pressure valve, the high pressure valve and the low pressure valve are instantaneously circulated to generate a pressure change.
만약, 작은 용량의 실내기가 밸브를 절환하게 되면, 큰 배관의 진동은 발생하지 않지만, 큰 용량의 실내기가 밸브를 절환하게 되거나 동시에 많은 실내기가 절환하게 되면 갑작스러운 압력차로 인하여 배관의 진동과 냉매 유동 소음이 발생하게 되고, 또한 상기 갑작스러운 압력의 변동은 시스템의 제어치에 큰 외란으로 작용하여 시스템을 안정시키는데 많은 시간이 소요되는 문제점이 있다.If a small-capacity indoor unit switches a valve, the vibration of the large pipe does not occur, but if a large-capacity indoor unit switches the valve or many indoor units switch at the same time, a sudden pressure difference causes the vibration of the pipe and the refrigerant flow. Noise is generated, and the sudden pressure fluctuation acts as a large disturbance to the control value of the system, which takes a long time to stabilize the system.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 운전모드의 변경시, 분배기의 고압밸브와 저압밸브를 소정 시간동안 온/오프를 반복하여 절환함으로써, 배관의 압력차에 의한 배관의 진동과 냉매 유동소음을 방지하도록 한 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법을 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, when changing the operation mode, by switching on and off the high pressure valve and the low pressure valve of the distributor for a predetermined time, the vibration of the pipe due to the pressure difference of the pipe It is an object of the present invention to provide a cooling / heating valve switching method of a multi-air conditioner for simultaneous cooling and heating to prevent noise and refrigerant flow noise.
상기와 같은 목적을 달성하기 위한 본 발명은, 3배관 방식 냉난방 동시형 멀티에어컨에 있어서, 사용자에 의해 임의의 실내기에 전원이 공급되면, 실내기의 운전모드가 냉방모드 또는 난방모드로 선택되었는지를 판단하는 과정과; 상기 판단결과, 실내기의 운전모드가 냉방모드이면, 실내기에 연결된 밸브의 고압밸브를 오픈,저압밸브를 클로우즈시키고, 실내기의 운전모드가 난방모드이면, 실내기에 연결된 밸브의 고압밸브를 클로우즈, 저압밸브를 오픈시키는 과정과; 상기 실내기의 운전모드가 냉방모드에서 난방모드로 변경되면, 상기 저압밸브 및 고압밸브를 펄스신호로 제어하여, 저압밸브를 소정 시간 동안 온/오프를 반복하여 클로우즈 시킴과 동시에 고압밸브도 소정 시간 동안 온/오프를 반복하여 오픈시키고, 상기 실내기의 운전모드가 난방모드에서 냉방모드로 변경되면, 고압밸브 및 저압밸브를 펄스신호로 제어하여, 고압밸브를 소정 시간 동안 온/오프를 반복하여 클로우즈 시킴과 동시에 저압밸브도 소정 시간동안 온/오프를 반복하여 오픈시키는 과정을 수행함을 특징으로 한다.According to the present invention for achieving the above object, in a three-pipe type air-conditioning simultaneous type air conditioner, if a power is supplied to any indoor unit by a user, it is determined whether the operation mode of the indoor unit is selected as a cooling mode or a heating mode. Process of doing; As a result of the determination, when the operation mode of the indoor unit is the cooling mode, the high pressure valve of the valve connected to the indoor unit is opened and the low pressure valve is closed. When the operation mode of the indoor unit is the heating mode, the high pressure valve of the valve connected to the indoor unit is closed and the low pressure valve is closed. Opening the process; When the operation mode of the indoor unit is changed from the cooling mode to the heating mode, the low pressure valve and the high pressure valve are controlled by a pulse signal, and the low pressure valve is closed on and off repeatedly for a predetermined time and the high pressure valve is also operated for a predetermined time. When the on / off is repeatedly opened and the operation mode of the indoor unit is changed from the heating mode to the cooling mode, the high pressure valve and the low pressure valve are controlled by a pulse signal to close and close the high pressure valve repeatedly for a predetermined time. At the same time, the low pressure valve is also characterized in that to perform the process of repeatedly opening on / off for a predetermined time.
이하, 본 발명에 의한 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 대한 작용 및 효과를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, the operation and effect of the cooling / heating valve switching method of the air-conditioning simultaneous multi-air conditioner according to the present invention will be described in detail.
도3은 본 발명 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 대한 일실시예의 동작흐름도이다.Figure 3 is a flow chart of an embodiment of the cooling / heating valve switching method of the present invention air-conditioning simultaneous multi-air conditioner.
도3에 도시한 바와같이, 본 발명은 사용자에 의해 임의의 실내기에 전원이 공급되면, 실내기의 운전모드가 냉방모드 또는 난방모드로 선택되었는지를 판단하는 과정(SP1,SP2)과; 상기 판단결과, 실내기의 운전모드가 냉방모드이면, 실내기에 연결된 밸브의 고압밸브를 클로우즈,저압밸브를 오픈시키고, 실내기의 운전모드가 난방모드이면, 실내기에 연결된 밸브의 고압밸브를 오픈, 저압밸브를 클로우즈시키는 과정(SP3),(SP6)과; 실내기의 운전모드가 변경되는지를 판단하여, 그 운전모드가 변경되면, 밸브의 고압밸브 및 저압밸브를 각기 소정 시간 동안 온/오프를 반복하여 절환하는 과정(SP4,5),(SP78)으로 이루어지며, 이와같은 본 발명의 동작을 설명한다.As shown in Fig. 3, the present invention provides a method for determining whether an indoor unit operation mode is selected as a cooling mode or a heating mode when power is supplied to a certain indoor unit (SP1, SP2); As a result of the determination, when the operation mode of the indoor unit is the cooling mode, the high pressure valve of the valve connected to the indoor unit is closed and the low pressure valve is opened. When the operation mode of the indoor unit is the heating mode, the high pressure valve of the valve connected to the indoor unit is opened and the low pressure valve is opened. Closing steps SP3 and SP6; It is determined whether the operation mode of the indoor unit is changed, and when the operation mode is changed, a process of repeatedly switching on / off the high pressure valve and the low pressure valve of the valve for a predetermined time (SP4, 5) and (SP78) This operation of the present invention will be described.
먼저, 사용자에 의해 임의의 실내기에 전원이 공급되면(SP1), 실내기의 운전모드가 냉방모드 또는 난방모드로 선택되었는지를 판단한다(SP2).First, when power is supplied to any indoor unit by the user (SP1), it is determined whether the operation mode of the indoor unit is selected as the cooling mode or the heating mode (SP2).
상기 판단결과(SP2), 실내기의 운전모드가 냉방모드이면(SP6), 도4와 같이, 실내기에 연결된 밸브의 고압밸브(H)를 클로우즈,저압밸브(L)를 오픈시킨다.As a result of the determination (SP2), if the operating mode of the indoor unit is the cooling mode (SP6), as shown in Figure 4, the high pressure valve (H) of the valve connected to the indoor unit is closed, the low pressure valve (L) is opened.
그 다음, 운전모드가 냉방모드에서 난방모드로 변경되면(SP7), 상기 저압밸브(L) 및 고압밸브(H)를, 도5와 같은 펄스신호로 제어하여, 소정시간 동안 온/오프를 반복하여 절환하는데(SP8), 즉 실내기의 운전모드가 냉방모드에서 난방모드로 변경되면, 저압밸브(L)를 소정 시간 동안 온/오프를 반복하여 클로우즈 시키고, 동시에 고압밸브(H)도 소정 시간 동안 온/오프를 반복하여 오픈시킨다.Then, when the operation mode is changed from the cooling mode to the heating mode (SP7), the low pressure valve (L) and the high pressure valve (H) is controlled by the pulse signal as shown in Fig. 5 to repeat the on / off for a predetermined time. (SP8), that is, when the operation mode of the indoor unit is changed from the cooling mode to the heating mode, the low pressure valve (L) is repeatedly closed on and off for a predetermined time, and at the same time the high pressure valve (H) for a predetermined time Open on / off repeatedly.
여기서, 상기 고압밸브(H)와 저압밸브(L)가 절환되는 시간은, 고압밸브(H)와 저압밸브(L)의 압력차이가 클수록 길게 설정되는데, 대략 상기 절환시간은 10초 내지 20초 정도로 설정하고, 상기 펄스신호는 온구간 0.5초, 오프구간은 1~2초로 설정한다.Here, the time for switching between the high pressure valve (H) and the low pressure valve (L) is set longer as the pressure difference between the high pressure valve (H) and the low pressure valve (L) is larger, the switching time is approximately 10 to 20 seconds. The pulse signal is set at 0.5 sec on the on interval and 1 to 2 sec at the off interval.
상기 판단결과(SP2), 실내기의 운전모드가 난방모드이면(SP3), 도6과 같이, 실내기에 연결된 밸브의 고압밸브(H)를 오픈,저압밸브(L)를 클로우즈시킨다.As a result of the determination (SP2), if the operating mode of the indoor unit is the heating mode (SP3), as shown in Fig. 6, the high pressure valve (H) of the valve connected to the indoor unit is opened, the low pressure valve (L) is closed.
그 다음, 운전모드가 난방모드에서 냉방모드로 변경되면(SP4), 상기 저압밸브(L) 및 고압밸브(H)를, 상기 도5와 같은 펄스신호로 제어하여, 소정시간 동안 온/오프를 반복하여 절환하는데(SP5), 즉 실내기의 운전모드가 난방모드에서 냉방모드로 변경되면, 고압밸브(H)를 소정 시간 동안 온/오프를 반복하여 클로우즈 시키고, 동시에 저압밸브(L)도 소정 시간 동안 온/오프를 반복하여 오픈시킨다.Then, when the operation mode is changed from the heating mode to the cooling mode (SP4), the low pressure valve (L) and the high pressure valve (H) is controlled by the pulse signal as shown in FIG. 5 to turn on / off for a predetermined time. Repeatedly switching (SP5), that is, when the operation mode of the indoor unit is changed from the heating mode to the cooling mode, the high pressure valve (H) is repeatedly closed on and off for a predetermined time, and the low pressure valve (L) is also a predetermined time. Repeatedly open on and off.
여기서, 상기 고압밸브(H)와 저압밸브(L)가 절환되는 시간은, 고압밸브(H)와 저압밸브(L)의 압력차이가 클수록 길게 설정되는데, 대략 상기 절환시간은 10초 내지 20초 정도로 설정하고, 상기 펄스신호는 온구간 0.5초, 오프구간은 1~2초로 설정한다.Here, the time for switching between the high pressure valve (H) and the low pressure valve (L) is set longer as the pressure difference between the high pressure valve (H) and the low pressure valve (L) is larger, the switching time is approximately 10 to 20 seconds. The pulse signal is set at 0.5 sec on the on interval and 1 to 2 sec at the off interval.
다시 말해서, 본 발명은 운전모드의 변경시, 분배기의 고압밸브와 저압밸브를 소정 시간동안 온/오프를 반복하여 절환함으로써, 배관의 압력차에 의한 배관의 진동과 냉매 유동소음을 방지한다.In other words, when the operation mode is changed, the high pressure valve and the low pressure valve of the distributor are repeatedly switched on and off for a predetermined time, thereby preventing the vibration of the pipe due to the pressure difference in the pipe and the refrigerant flow noise.
상기 본 발명의 상세한 설명에서 행해진 구체적인 실시 양태 또는 실시예는 어디까지나 본 발명의 기술 내용을 명확하게 하기 위한 것으로 이러한 구체적 실시예에 한정해서 협의로 해석해서는 안되며, 본 발명의 정신과 다음에 기재된 특허 청구의 범위내에서 여러가지 변경 실시가 가능한 것이다.The specific embodiments or examples made in the detailed description of the present invention are intended to clarify the technical contents of the present invention to the extent that they should not be construed as limited to these specific embodiments and should not be construed in consultation. Various changes can be made within the scope of.
이상에서 상세히 설명한 바와같이 본 발명은, 운전모드의 변경시, 분배기의 고압밸브와 저압밸브를 소정 시간동안 온/오프를 반복하여 절환함으로써, 배관의 압력차에 의한 배관의 진동과 냉매 유동소음을 방지하는 효과가 있다. As described in detail above, in the present invention, when the operation mode is changed, the high pressure valve and the low pressure valve of the distributor are repeatedly switched on and off for a predetermined time, so that the vibration of the pipe due to the pressure difference in the pipe and the refrigerant flow noise It is effective to prevent.
도 1은 일반적인 냉난방 동시겸용 멀티공기조화기의 구성을 보인 예시도.1 is an exemplary view showing the configuration of a general air-conditioning simultaneous multi-air conditioner.
도 2는 냉난방 동시겸용 멀티에어컨의 운전모습을 보인 개략도.Figure 2 is a schematic diagram showing the driving mode of the air-conditioning combined use multi-air conditioner.
도 3은 본 발명 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 대한 동작흐름도.Figure 3 is a flow chart for the cooling / heating valve switching method of the present invention air-conditioning simultaneous multi-air conditioner.
도 4는 도3에 있어서, 냉방모드 운전시의 분배기 밸브의 모습을 보인 개략도.Figure 4 is a schematic diagram showing a state of the distributor valve in the cooling mode operation in Figure 3;
도5는 도3에 있어서, 고압밸브 및 저압밸브를 제어하기 위한 펄스신호의 파형도.5 is a waveform diagram of a pulse signal for controlling the high pressure valve and the low pressure valve in FIG.
도6은 도3에 있어서, 난방모드 운전시의 분배기 밸브의 모습을 보인 개략도.Fig. 6 is a schematic view showing the distributor valve in the heating mode in Fig. 3;
Claims (9)
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