KR20040090327A - 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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- KR20040090327A KR20040090327A KR1020030024460A KR20030024460A KR20040090327A KR 20040090327 A KR20040090327 A KR 20040090327A KR 1020030024460 A KR1020030024460 A KR 1020030024460A KR 20030024460 A KR20030024460 A KR 20030024460A KR 20040090327 A KR20040090327 A KR 20040090327A
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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
- 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
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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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- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
본 발명은 냉난방 동시겸용 멀티에어컨에 관한 것으로, 특히 운전모드의 변경시, 분배기의 고압밸브와 저압밸브를 소정 시간 간격을 두고 절환함으로써, 배관의 압력차에 의한 배관의 진동과 소음을 방지하도록 한 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 관한 것이다.The present invention relates to a multi-air conditioner for simultaneous heating and cooling, and in particular, when changing the operation mode, by switching the high pressure valve and the low pressure valve of the distributor at a predetermined time interval, so as to prevent the vibration and noise of the pipe due to the pressure difference between the pipes. The present invention relates to a cooling / heating valve switching method of a multi-air conditioner for simultaneous cooling and heating.
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 예시도이고, 도2는 냉난방 동시겸용 멀티 공기조화기의 배관연결을 보인 개략도이다.Figure 1 is an exemplary view showing the configuration of a general air-conditioning simultaneous multi-air conditioner, Figure 2 is a schematic view showing the piping connection of the 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, an electromagnetic expansion valve 61, and the like.
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).
여기서, 상기 분배기(B)는 운전조건에 따라 상기 실외기(A)로부터 유입된 냉매의 상을 분리하거나 상기 실내기(C)로부터 유입된 냉매의 상을 혼합하는 기액분리기(10)와; 상기 운전조건에 따라 상기 실외기(A)로부터 직접 유입되거나 상기 기액분리기(10)를 거쳐 유입된 냉매를 상기 실내기(C)로 안내함과 함께 열교환된 냉매를 상기 실외기(A)로 재안내하는 안내 배관부(20)와; 상기 다수대의 실내기 (C)중 운전조건에 따라 선택된 실내기로만 냉매가 유입되도록 상기 안내배관부 (20)를 제어하는 밸브(30)가 포함되어 구성된다.Here, the distributor (B) comprises a gas-liquid separator (10) for separating the phase of the refrigerant introduced from the outdoor unit (A) or mixing the phase of the refrigerant introduced from the indoor unit (C) according to the operating conditions; Guide the refrigerant introduced directly from the outdoor unit (A) or the gas introduced through the gas-liquid separator (10) to the indoor unit (C) and the heat exchanged refrigerant to the outdoor unit (A) according to the operating conditions. A piping unit 20; The plurality of indoor units (C) is configured to include a valve 30 for controlling the guide pipe 20 so that the refrigerant is introduced only to the indoor unit selected in accordance with the operating conditions.
상기 밸브(30)는 냉방 또는 난방에 따라, 오픈(Open) 또는 클로우즈 (Close) 되는 고압밸브 (미도시)와 저압밸브(미도시)로 이루어진다.The valve 30 is composed of a high pressure valve (not shown) and a low pressure valve (not shown) that are open or closed according to cooling or heating.
이때, 상술한 냉난방 동시겸용 멀티에어컨의 냉방 또는 난방 절환시, 분배기에서 냉방 또는 난방을 절환하기 위해, 분배기 밸브의 고압밸브와 저압밸브를 거의 동시에 동작시키는데, 이렇게 거의 동시에 분배기의 고압밸브와 저압밸브를 동작시키게 되면, 고압의 냉매와 저압의 냉매가 서로 유통되는 경우가 생겨 갑작스러운 압력차이가 발생하고, 이로 인해 냉매의 유동에 따른 배관의 진동과 소음이 발생하는 문제점이 있다.At this time, in the cooling or heating switching of the air conditioner for simultaneous cooling and heating, the high pressure valve and the low pressure valve of the distributor valve are operated almost simultaneously to switch the cooling or heating in the distributor. When operating the, the high-pressure refrigerant and the low-pressure refrigerant may be circulated with each other to generate a sudden pressure difference, which causes a problem that the vibration and noise of the pipe due to the flow of the refrigerant.
본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 운전모드의 변경시, 분배기의 고압밸브와 저압밸브를 소정 시간 간격을 두고 절환함으로써, 배관의 압력차에 의한 배관의 진동과 소음을 방지하도록 한 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법을 제공함에 그 목적이 있다.The present invention has been made to solve the above problems, by switching the high pressure valve and the low pressure valve of the distributor at a predetermined time interval when changing the operation mode, to prevent the vibration and noise of the pipe due to the pressure difference between the pipes. 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.
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 멀티 공기조화기의 배관연결을 보인 개략도.Figure 2 is a schematic diagram showing the piping connection of the air-conditioning simultaneous multi air conditioner.
도3은 본 발명 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 대한 일실시예의 동작흐름도.Figure 3 is an operation flow diagram of an embodiment of a cooling / heating valve switching method of the present invention air-conditioning simultaneous multi-air conditioner.
도4는 본 발명 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 대한 다른 실시예의 동작흐름도.Figure 4 is a flow chart of another embodiment of the cooling / heating valve switching method of the present invention air-conditioning simultaneous multi-air conditioner.
도5는 본 발명 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 대한 다른 실시예의 동작흐름도.Figure 5 is a flow chart of another embodiment of the cooling / heating valve switching method of the air-conditioning simultaneous multi-air conditioner of the present invention.
상기와 같은 목적을 달성하기 위한 본 발명은, 냉난방 동시겸용 멀티에어컨에 있어서, 사용자에 의해 실내기에 전원이 공급되면, 실내기의 운전모드가 냉방모드 또는 난방모드로 선택되었는지를 판단하는 과정과; 상기 판단결과, 실내기의 운전모드가 냉방모드이면, 실내기에 연결된 밸브의 고압밸브를 클로우즈,저압밸브를 오픈시키고, 실내기의 운전모드가 난방모드이면, 실내기에 연결된 밸브의 고압밸브를 오픈, 저압밸브를 클로우즈시키는 과정과; 상기 실내기의 운전모드가 변경되는지를 판단하여, 그 운전모드가 변경되면, 밸브의 고압밸브 및 저압밸브의 상태를 소정 시간 간격으로 절환하는 과정으로 수행함을 특징으로 한다.The present invention for achieving the above object, in the air-conditioning simultaneous multi-air conditioner, when the power is supplied to the 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 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 the process; It is determined whether the operation mode of the indoor unit is changed, and when the operation mode is changed, the process of switching the state of the high pressure valve and the low pressure valve of the valve at a predetermined time interval is characterized in that it is performed.
상기와 같은 목적을 달성하기 위한 본 발명은, 냉난방 동시겸용 멀티에어컨에 있어서, 실외기에서, 분배기에 연결된 모든 실내기의 운전상태를 체크하는 과정과; 운전상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하는지를 판단하는 과정과; 상기 판단결과, 운전상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하면, 임의의 실내기가 연결되어 있는 밸브를 제외한 모든 실내기의 밸브를 해당 운전모드에 따라 절환하고, 소정 시간이 경과되었는지를 판단하는 과정과; 상기 판단결과, 소정시간이 경과되면, 상기 임의의 실내기의 밸브를 현재 운전모드에 맞게 절환하는 과정으로 수행함을 특징으로 한다.The present invention for achieving the above object, in the air-conditioning simultaneous multi-air conditioner, in the outdoor unit, the process of checking the operating state of all the indoor unit connected to the distributor; Determining whether the number of indoor units whose driving state is changed matches the number of indoor units currently in operation; As a result of the determination, if the number of indoor units whose operation state is changed coincides with the number of indoor units currently operating, the valves of all indoor units except the valve to which any indoor unit is connected are switched according to the operation mode, and the predetermined time is Determining whether elapsed; As a result of the determination, when a predetermined time has elapsed, a process of switching the valve of the arbitrary indoor unit according to the current operation mode is performed.
상기와 같은 목적을 달성하기 위한 본 발명은, 냉난방 동시겸용 멀티에어컨에 있어서, 실외기에서 분배기를 연결된 모든 실내기의 운전상태를 체크하는 과정과; 운전상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하는지를 판단하는 과정과; 상기 판단결과, 하나의 실내기가 연결되어 있는 밸브는 오픈시키고, 그 하나의 실내기를 제외한 모든 실내기의 밸브를 클로우즈 시킨 다음, 소정 시간이 경과되었는지를 판단하는 과정과; 상기 판단결과, 소정시간이 경과되면, 모든 실내기들의 밸브를, 해당 운전모드에 맞게 절환하는 과정으로 수행함을 특징으로 한다.The present invention for achieving the above object, in the air-conditioning simultaneous multi-air conditioner, the process of checking the operating state of all the indoor unit connected to the distributor in the outdoor unit; Determining whether the number of indoor units whose driving state is changed matches the number of indoor units currently in operation; As a result of the determination, opening the valve to which one indoor unit is connected, closing the valves of all the indoor units except the one indoor unit, and then determining whether a predetermined time has elapsed; As a result of the determination, when a predetermined time elapses, the valves of all the indoor units are performed in a process of switching according to a corresponding operation mode.
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 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~SP5),(SP8~SP10)과; 상기 실내기의 운전모드가 변경되는지를 판단하여, 그 운전모드가 변경되면, 밸브의 고압밸브 및 저압밸브의 상태를 소정 시간 간격으로절환하는 과정(SP6,SP7),(SP11,SP12)으로 이루어지며, 이와같은 본 발명의 동작을 설명한다.As shown in FIG. 3, the present invention provides a process (SP1 to SP2) for determining whether the indoor mode is selected as the cooling mode or the heating mode when the indoor unit is supplied with power. 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 to SP5 and SP8 to SP10; It is determined whether the operation mode of the indoor unit is changed, and if the operation mode is changed, the process of switching the state of the high pressure valve and the low pressure valve of the valve at predetermined time intervals is performed (SP6, SP7), (SP11, SP12). This operation of the present invention will be described.
먼저, 사용자에 의해 실내기에 전원이 공급되면, 실내기의 운전모드가 냉방모드 또는 난방모드로 선택되었는지를 판단한다(SP1~SP2).First, when power is supplied to the indoor unit by the user, it is determined whether the operation mode of the indoor unit is selected as the cooling mode or the heating mode (SP1 to SP2).
상기 판단결과(SP2), 실내기의 운전모드가 냉방모드이면, 실내기에 연결된 밸브의 고압밸브를 클로우즈,저압밸브를 오픈시킨다(SP8)As a result of the determination (SP2), if the operation mode of the indoor unit is the cooling mode, close the high pressure valve of the valve connected to the indoor unit, open the low pressure valve (SP8)
이러한 상태에서, 상기 실내기의 운전모드가 냉방모드에서 난방모드로 변경되면(SP9), 상기 저압밸브를 클로우즈시킨후(SP10), 소정시간이 경과하면 고압밸브를 오픈시킨다(SP11,SP12).In this state, when the operation mode of the indoor unit is changed from the cooling mode to the heating mode (SP9), the low pressure valve is closed (SP10), and after a predetermined time elapses, the high pressure valve is opened (SP11, SP12).
상기 판단결과(SP2), 실내기의 운전모드가 난방모드이면, 실내기에 연결된 밸브의 고압밸브를 오픈시키고, 저압밸브를 클로우즈시킨다(SP3)As a result of the determination (SP2), if 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 closed (SP3).
이러한 상태에서, 상기 실내기의 운전모드가 난방모드에서 냉방모드로 변경되면(SP4), 상기 고압밸브를 클로우즈시킨후(SP5), 소정시간이 경과하면 저압밸브를 오픈시킨다(SP6 ,SP7).In this state, when the operation mode of the indoor unit is changed from the heating mode to the cooling mode (SP4), after closing the high pressure valve (SP5), when the predetermined time elapses, the low pressure valve is opened (SP6, SP7).
즉, 운전모드의 변경시, 분배기의 고압밸브 및 저압밸브를 절환할때, 고압밸브와 저압밸브를 소정 시간간격으로, 냉방 또는 난방에 따라 절환함으로써, 고압의 냉매와 저압의 냉매가 서로 유통되는 경우를 방지한다.That is, when the high pressure valve and the low pressure valve of the distributor are changed when the operation mode is changed, the high pressure refrigerant and the low pressure refrigerant are circulated from each other by switching between the high pressure valve and the low pressure valve according to cooling or heating at a predetermined time interval. Prevent the case.
그리고, 도4는 본 발명 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 대한 다른 실시예의 동작흐름도이다.And, Figure 4 is a flow chart of another embodiment of the cooling / heating valve switching method of the present invention air-conditioning simultaneous multi-air conditioner.
도4에 도시한 바와같이 본 발명은, 실외기에서, 분배기에 연결된 모든 실내기의 운전상태를 체크하는 과정 (SP11)과; 운전상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하는지를 판단하는 과정(SP12)과; 상기 판단결과, 운전상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하면, 임의의 실내기가 연결되어 있는 밸브를 제외한 모든 실내기의 밸브를 해당 운전모드에 따라 절환하고, 소정 시간이 경과되었는지를 판단하는 과정(SP13,SP14)과; 상기 판단결과, 소정시간이 경과되면, 상기 임의의 실내기의 밸브를 현재 운전모드에 맞게 절환하는 과정 (SP15)으로 이루어지며, 이와같은 본 발명의 동작을 설명한다.As shown in Fig. 4, the present invention provides a method (SP11) for checking the operation state of all indoor units connected to the distributor in an outdoor unit; Determining whether the number of indoor units whose driving state is changed is consistent with the number of indoor units currently being operated (SP12); As a result of the determination, if the number of indoor units whose operation state is changed coincides with the number of indoor units currently operating, the valves of all indoor units except the valve to which any indoor unit is connected are switched according to the operation mode, and the predetermined time is Determining whether it has passed (SP13, SP14); As a result of the determination, when a predetermined time elapses, a process (SP15) of switching the valve of the arbitrary indoor unit according to the current operation mode is made, and the operation of the present invention will be described.
먼저, 실외기의 마이크로컴퓨터(미도시)가, 분배기에 연결된 모든 실내기의 운전상태를 체크한다(SP11),First, the microcomputer (not shown) of the outdoor unit checks the operating states of all indoor units connected to the distributor (SP11),
그 다음, 운전상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하는지 또는 운전상태가 변경되는 실내기의 대수가, 실외기에 연결된 실내기의 대수와 일치하는지를 판단한다(SP12).Next, it is determined whether the number of indoor units whose driving state is changed coincides with the number of indoor units currently operating or whether the number of indoor units whose driving state is changed coincides with the number of indoor units connected to the outdoor unit (SP12).
상기 판단결과(SP12), 운전상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하면, 임의의 실내기가 연결되어 있는 밸브를 제외한 모든 실내기의 밸브를 해당 운전모드에 따라 절환한다(SP13).As a result of the determination (SP12), if the number of indoor units whose operation state is changed coincides with the number of indoor units currently operating, the valves of all indoor units except the valve to which any indoor unit is connected are switched according to the operation mode ( SP13).
이때, 실내기의 운전모드가 냉방모드에서 난방모드로 변경되면, 저압밸브를 클로우즈 시킨후, 소정 시간이 경과하면 고압밸브를 오픈시키고, 실내기의 운전모드가 난방모드에서 냉방모드로 변경되면, 고압밸브를 클로우즈 시킨 다음, 소정 시간이 경과하면 저압밸브를 오픈시킨다.At this time, when the operation mode of the indoor unit is changed from the cooling mode to the heating mode, the low pressure valve is closed, and after a predetermined time elapses, the high pressure valve is opened. When the operation mode of the indoor unit is changed from the heating mode to the cooling mode, the high pressure valve is closed. Close the valve and open the low pressure valve after a predetermined time.
그 다음, 소정시간이 경과되면(SP14), 상기 임의의 실내기의 밸브를 현재 운전모드에 맞게 절환한다(SP15).Then, when a predetermined time has elapsed (SP14), the valve of the arbitrary indoor unit is switched to match the current operation mode (SP15).
즉, 모든 실내기가 동시에, 운전모드에 변경에 의해 절환되는 경우를 방지하여, 분배기와 모든 실내기 사이의 배관 막힘을 방지하여 시스템의 안전성을 기한다.That is, it prevents the case where all the indoor units are switched at the same time by the change in the operation mode, and prevents the blockage of the pipe between the distributor and all the indoor units to ensure the safety of the system.
그리고, 도5는 본 발명 냉난방 동시겸용 멀티에어컨의 냉/난방 밸브 절환방법에 대한 다른 실시예의 동작흐름도이다.5 is an operation flowchart of another embodiment of a cooling / heating valve switching method of the present invention.
도5에 도시한 바와같이 본 발명은, 실외기에서, 분배기에 연결된 모든 실내기의 운전상태를 체크하는 과정 (SP21)과; 운전 상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하는지를 판단하는 과정(SP22)과; 상기 판단결과, 하나의 실내기가 연결되어 있는 밸브는 오픈시키고, 그 하나의 실내기를 제외한 모든 실내기의 밸브를 클로우즈시킨 다음, 소정 시간이 경과되었는지를 판단하는 과정(SP23,SP24)과; 상기 판단결과, 소정시간이 경과되면, 모든 실내기들의 밸브를, 해당 운전모드에 맞게 절환하는 과정(SP25)으로 이루어지며, 이와같은 본 발명의 동작을 설명한다.As shown in Fig. 5, the present invention provides a method (SP21) for checking the operation state of all indoor units connected to the distributor in an outdoor unit; Determining whether the number of indoor units whose driving state is changed is consistent with the number of indoor units currently being operated (SP22); As a result of the determination, the valves connected to one indoor unit are opened, the valves of all the indoor units except the one indoor unit are closed, and then the process of determining whether a predetermined time has elapsed (SP23, SP24); As a result of the determination, when a predetermined time elapses, a process (SP25) of switching the valves of all the indoor units according to the operation mode is made, and the operation of the present invention will be described.
먼저, 실외기의 마이크로컴퓨터(미도시)가, 분배기에 연결된 모든 실내기의 운전상태를 체크한다(SP21),First, the microcomputer (not shown) of the outdoor unit checks the operating states of all indoor units connected to the distributor (SP21),
그 다음, 운전상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하는지 또는 운전상태가 변경되는 실내기의 대수가, 실외기에 연결된 실내기의 대수와 일치하는지를 판단한다(SP22).Next, it is determined whether the number of indoor units whose driving state changes is the same as the number of indoor units currently operating or whether the number of indoor units whose driving state changes is the same as the number of indoor units connected to the outdoor unit (SP22).
상기 판단결과(SP22), 운전상태가 변경되는 실내기의 대수가, 현재 운전중인 실내기의 대수와 일치하면, 임의의 실내기가 연결되어 있는 밸브의 고압밸브 및 저압밸브를 오픈시키고, 나머지 모든 실내기에 연결되는 밸브의 고압밸브 및 저압밸브는 클로우즈시킨다(SP23).As a result of the determination (SP22), if the number of indoor units whose operation state is changed coincides with the number of indoor units currently operating, open the high pressure valve and the low pressure valve of the valve to which any indoor unit is connected, and connect all remaining indoor units. The high pressure valve and the low pressure valve of the valve to be closed (SP23).
그 다음, 소정 시간이 경과되면(SP24), 모든 실내기에 연견된 밸브를 해당 운전모드에 따라 절환하는데(SP25), 실내기의 운전모드가 냉방모드에서 난방모드로 변경되면, 저압밸브를 클로우즈 시킨후, 소정 시간이 경과하면 고압밸브를 오픈시키고, 실내기의 운전모드가 난방모드에서 냉방모드로 변경되면, 고압밸브를 클로우즈 시킨 다음, 소정 시간이 경과하면 저압밸브를 오픈시킨다.Then, when a predetermined time has elapsed (SP24), the valves connected to all the indoor units are switched according to the operation mode (SP25). When the operation mode of the indoor unit is changed from the cooling mode to the heating mode, the low pressure valve is closed. When the predetermined time elapses, the high pressure valve is opened. When the operation mode of the indoor unit is changed from the heating mode to the cooling mode, the high pressure valve is closed, and when the predetermined time elapses, the low pressure valve is opened.
다시 말해서, 본 발명은 냉난방 동시겸용 멀티에어컨에 있어서, 분배기에 연결된 다수의 실내기가, 냉방모드 또는 난방모드로의 절환시, 분배기의 고압밸브와 저압밸브를 소정 시간 간격으로 절환함으로써, 고압의 냉매와 저압의 냉매가 서로 유통되는 것을 방지하고, 분배기에 연결된 다수의 실내기의 운전모드가 한번에 변경되더라도, 분배기에 연결된 하나의 밸브는 소정 시간동안 오픈시킴으로써, 분배기의 모든 배관이 막히는 경우를 방지한다.In other words, the present invention provides a high-pressure refrigerant by switching the high pressure valve and the low pressure valve of the distributor at predetermined time intervals in a plurality of indoor units connected to the distributor in the air-conditioning simultaneous multi-air conditioner, when switching to the cooling mode or the heating mode. The refrigerant of the low pressure and the low pressure are prevented from being distributed to each other, and even if an operation mode of a plurality of indoor units connected to the distributor is changed at one time, one valve connected to the distributor is opened for a predetermined time, thereby preventing all pipes of the distributor from being blocked.
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, 냉난방 동시겸용 멀티에어컨에 있어서, 분배기에 연결된 다수의 실내기가, 냉방모드 또는 난방모드로의 절환시, 분배기의 고압밸브와 저압밸브를 소정 시간 간격으로 절환함으로써, 고압의 냉매와 저압의 냉매가 서로 유통되는 것을 방지하여, 배관의 진동을 감소시키는 효과가 있다.As described in detail above, the present invention provides a plurality of indoor units connected to a distributor in a simultaneous air-conditioning and heating system by switching between a high pressure valve and a low pressure valve of a distributor at predetermined time intervals when switching to a cooling mode or a heating mode. In order to prevent the high pressure refrigerant and the low pressure refrigerant from flowing to each other, the vibration of the pipe is reduced.
또한, 분배기에 연결된 다수의 실내기의 운전모드가 한번에 변경되더라도, 분배기에 연결된 하나의 밸브는 소정 시간동안 오픈시킴으로써, 분배기의 모든 배관이 막히는 경우를 방지하여 시스템의 안정성을 향상시키는 효과가 있다.In addition, even if the operation mode of a plurality of indoor units connected to the distributor is changed at one time, one valve connected to the distributor is opened for a predetermined time, thereby preventing the clogging of all pipes of the distributor, thereby improving the stability of the system.
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---|---|---|---|---|
CN109798628A (en) * | 2019-01-25 | 2019-05-24 | 广东美的暖通设备有限公司 | The control method and device of coolant distribution device pressure difference |
CN111412636A (en) * | 2020-04-07 | 2020-07-14 | 珠海格力电器股份有限公司 | Air conditioner without communication circuit between indoor unit and outdoor unit and control method thereof |
WO2024085443A1 (en) * | 2022-10-19 | 2024-04-25 | 삼성전자주식회사 | Air conditioner and control method thereof |
-
2003
- 2003-04-17 KR KR10-2003-0024460A patent/KR100504887B1/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109798628A (en) * | 2019-01-25 | 2019-05-24 | 广东美的暖通设备有限公司 | The control method and device of coolant distribution device pressure difference |
CN111412636A (en) * | 2020-04-07 | 2020-07-14 | 珠海格力电器股份有限公司 | Air conditioner without communication circuit between indoor unit and outdoor unit and control method thereof |
CN111412636B (en) * | 2020-04-07 | 2021-05-25 | 珠海格力电器股份有限公司 | Air conditioner without communication circuit between indoor unit and outdoor unit and control method thereof |
WO2024085443A1 (en) * | 2022-10-19 | 2024-04-25 | 삼성전자주식회사 | Air conditioner and control method thereof |
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