KR100360230B1 - Operating method of multi-air conditioner - Google Patents
Operating method of multi-air conditioner Download PDFInfo
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- KR100360230B1 KR100360230B1 KR1019990027995A KR19990027995A KR100360230B1 KR 100360230 B1 KR100360230 B1 KR 100360230B1 KR 1019990027995 A KR1019990027995 A KR 1019990027995A KR 19990027995 A KR19990027995 A KR 19990027995A KR 100360230 B1 KR100360230 B1 KR 100360230B1
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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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
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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
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/02—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in parallel
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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
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
본 발명 멀티에어컨의 운전방법은 오일분리기(13)에서 분리된 오일을 압축기(11)로 회수하기 위하여 설치된 오일리턴라인(17) 상에 냉매바이패스조절밸브(20)를 설치하고, 실내기가 설정대수 이하로 운전시에는 냉매바이패스조절밸브(20)를 계속열어서 냉매의 일부가 바이패스되도록 하고, 설정대수 이상이 운전시에는 냉매바이패스조절밸브(20)를 닫고 운전하다가 일정시간만을 열어서 오일만 회수되도록 하여 냉매의 손실을 방지하게 된다.In the operation method of the multi-air conditioner of the present invention, the refrigerant bypass control valve 20 is installed on the oil return line 17 installed to recover oil separated from the oil separator 13 to the compressor 11, and the indoor unit is set. When operating below the number of units, the refrigerant bypass control valve 20 is continuously opened so that a part of the refrigerant is bypassed. When the operation is greater than the set number, the refrigerant bypass control valve 20 is closed and the oil is opened for a predetermined time. Only recovery is performed to prevent loss of refrigerant.
Description
본 발명은 멀티에어컨의 운전방법에 관한 것으로, 특히 가동되는 증발기의 수량에 따라 오일회수시간을 차별적으로 실시하여 냉매의 손실을 감소시키도록 하는데 적합한 멀티에어컨의 냉매손실방지장치 및 그 방법에 관한 것이다.The present invention relates to a method of operating a multi-air conditioner, and more particularly, to an apparatus and method for preventing refrigerant loss of a multi-air conditioner suitable for reducing oil loss by differentially performing oil recovery time according to the number of evaporators operated. .
일반적으로 실내기가 되는 증발기가 2개이상 많게는 10개이상 부착되어 10실이상이 되는 에어컨을 멀티에어컨이라고 하며, 이와 같은 종래 멀티에어컨의 한 형태가 도 1에 도시되어 있는 바, 이를 간단히 설명하면 다음과 같다.In general, an air conditioner having two or more evaporators that become indoor units and ten or more attached to ten or more rooms is called a multi-air conditioner. A form of the conventional multi-air conditioner is illustrated in FIG. 1. Same as
도 1은 종래 멀티에어컨의 구성을 개략적으로 보인 배관도로서, 도시된 바와 같이, 종래의 멀티에어컨은 압축기(1)와 응축기(2)가 냉매라인(3)으로 연결되어 있고, 그와 같이 연결된 응축기(2)에는 병렬로 2개의 팽창장치(4)(4')와 증발기(5)(5')기가 설치되어 있으며, 증발기(5)(5')는 다시 압축기(1)에 냉매라인(3)으로 연결되어 있다.FIG. 1 is a schematic view illustrating a configuration of a conventional multi-air conditioner. As shown in the drawing, a conventional multi-air conditioner has a compressor 1 and a condenser 2 connected to a refrigerant line 3, and the condenser connected as described above. 2, two expansion devices 4, 4 'and an evaporator 5, 5' are installed in parallel, and the evaporators 5, 5 'are again connected to the compressor 1 in the refrigerant line 3. )
그리고, 상기 압축기(1)와 응축기(2) 사이에는 압축된 냉매중에 포함되어 있는 오일을 분리하기 위한 오일분리기(7)가 설치되어 있고, 그 오일분리기(7)는 압축기(1)와 오일리턴라인(8)으로 연결되어 있다.An oil separator 7 is provided between the compressor 1 and the condenser 2 to separate the oil contained in the compressed refrigerant. The oil separator 7 includes the compressor 1 and the oil return. It is connected by line 8.
상기와 같이 구성되어 있는 종래 멀티에어컨은 저온저압의 기체냉매를 압축기(1)에서 고온고압으로 변화시키고, 그와 같은 기체상태의 냉매를 응축기(2)에서 액체상태로 변화시키며, 액체상태의 냉매는 팽창장치(4)(4')들을 지나면서 저온저압으로 변환되고, 실내기가 되는 증발기(5)(5')들을 지나면서 저온저압의 기체상태로 변화되어 외부의 열을 흡수하며 냉방이 이루어진다.In the conventional multi-air conditioner configured as described above, the low-temperature low-pressure gas refrigerant is changed from the compressor 1 to the high temperature and high pressure, and such gaseous refrigerant is changed from the condenser 2 to the liquid state, and the liquid refrigerant is Is converted to low temperature and low pressure as it passes through expansion devices (4) and 4 ', and changes to a gas state at low temperature and low pressure as it passes through evaporators (5) and 5' that become indoors to absorb external heat and cool. .
그리고, 압축기(1)에서 토출되는 냉매중에는 오일이 일부 포함되어 있으며, 그와 같이 혼입된 오일은 오일분리기(7)에서 분리되어 오일리턴라인(8)을 통하여 압축기(1)로 회수되어 압축기(1)의 동작시 윤할에 사용되어진다.In addition, some of the refrigerant discharged from the compressor 1 includes oil, and the mixed oil is separated from the oil separator 7 and recovered to the compressor 1 through the oil return line 8. It is used for wheel polishing during operation of 1).
그러나, 종래의 멀티에어컨은 실내기인 증발기(5)(5')들의 사용수량에 관계없이 에어컨의 동작시에는 항상 오일분리기(7)에서 분리된 적은 양의 오일이 오일리턴라인(8)을 통하여 압축기(1)로 회수되고, 그와 같은 오일의 회수뿐만이 아니라 오일리턴라인(8)을 통하여 냉매도 일부 회수되므로 냉매손실을 초래하는 문제점이 있었다.However, in the conventional multi-air conditioner, a small amount of oil separated from the oil separator 7 always passes through the oil return line 8 at the time of operation of the air conditioner regardless of the amount of use of the evaporators 5 and 5 'which are indoor units. The refrigerant 1 is recovered by the compressor 1, and thus some of the refrigerant is recovered through the oil return line 8 as well as the recovery of such oil.
상기와 같은 문제점을 감안하여 안출한 본 발명의 목적은 오일리턴라인을 통하여 발생되는 냉매의 손실을 감소시키도록 하는데 적합한 멀티에어컨의 운전방법을 제공함에 있다.An object of the present invention devised in view of the above problems is to provide a method for operating a multi-air conditioner suitable for reducing the loss of the refrigerant generated through the oil return line.
도 1은 종래 멀티에어컨의 구성을 개략적으로 보인 배관도.1 is a schematic diagram illustrating a configuration of a conventional multi-air conditioner.
도 2는 본 발명의 냉매손실방지장치가 설치된 멀티에어컨의 구성을 보인 배관도.Figure 2 is a piping diagram showing the configuration of a multi-air conditioner installed with a refrigerant loss preventing device of the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
11 : 압축기 12 : 응축기11: compressor 12: condenser
13 : 오일분리기 15 : 증발기13 oil separator 15 evaporator
16 : 냉매라인 17 : 오일리턴라인16 refrigerant line 17 oil return line
20 : 냉매바이패스조절밸브20: refrigerant bypass control valve
상기와 같은 본 발명의 목적을 달성하기 위하여 적어도 2개이상의 증발기가 설치되어 있는 멀티 에어컨을 운전하는 방법에 있어서, 상기 증발기중 설정수량 이하의 증발기가 가동될때는 오일리턴라인에 설치된 냉매바이패스조절밸브를 계속 열어서 압축기에서 압축된 냉매의 일부를 오일리턴라인을 통하여 회수되는 오일과 함께 바이패스시키고, 설정수량 이상의 증발기가 가동될때는 상기 냉매바이패스조절밸브를 닫고 운전하는 상태에서 일정시간만 열어서 오일만 오일리턴라인으로 회수되도록 하여 냉매의 손실을 방지하도록 하는 것을 특징으로 하는 멀티에어컨의 운전방법이 제공된다.In order to achieve the above object of the present invention, in the method of operating a multi-air conditioner having at least two evaporators, the refrigerant bypass control installed in the oil return line when the evaporator below the set amount of the evaporator is operated. The valve is opened continuously to bypass a portion of the refrigerant compressed by the compressor together with the oil recovered through the oil return line.When the evaporator is operated over the set quantity, the refrigerant bypass control valve is closed and opened for a certain time. A method of operating a multi-air conditioner is provided so that only oil is recovered to an oil return line to prevent loss of refrigerant.
이하, 상기와 같은 본 발명 멀티에어컨의 냉매손실방지장치 및 그 방법을 첨부된 도면의 실시예를 참고하여 보다 상세히 설명하면 다음과 같다.Hereinafter, with reference to the embodiments of the accompanying drawings, the refrigerant loss prevention apparatus and method of the present invention as described above in more detail as follows.
도 2는 본 발명의 냉매손실방지장치가 설치된 멀티에어컨의 구성을 보인 것으로, 증발기가 2개인 2실 에어컨을 예로 들은 것이다.Figure 2 shows a configuration of a multi-air conditioner installed with a refrigerant loss preventing device of the present invention, an example of a two-room air conditioner having two evaporators.
도시된 바와 같이, 기체 냉매를 고온고압으로 압축하기 위한 압축기(11)와 그 압축된 기체냉매를 액체상태로 변화시키기 위한 응축기(12)의 사이에는 오일분리기(13)가 설치되어 있고, 그 응축기(12)에는 실내기를 이루는 팽창장치(14)와 증발기(15)들이 2개가 연결설치되어 있으며, 그와 같은 압축기(11), 응축기(12), 팽창장치(14), 증발기(15)들은 냉매가 순환되는 냉매라인(16)으로 연결되어 있다.As shown, an oil separator 13 is provided between the compressor 11 for compressing the gas refrigerant at a high temperature and high pressure and the condenser 12 for changing the compressed gas refrigerant into a liquid state. 12, two expansion devices 14 and evaporators 15 constituting the indoor unit are connected to each other, and such compressor 11, condenser 12, expansion device 14, and evaporators 15 are refrigerants. Is connected to the refrigerant line 16 is circulated.
그리고, 상기 오일분리기(13)에서 회수되는 오일을 압축기(11)로 회수하기 위하여 오일리턴라인(17)이 설치되어 있고, 그 오일리턴라인(17) 상에는 실내기의 사용대수에 따라 냉매의 바이패스 정도를 조절하기 위한 일종의 솔레노이드 밸브와 같은 냉매바이패스조절밸브(20)가 설치되어 있다.In addition, an oil return line 17 is installed to recover the oil recovered from the oil separator 13 to the compressor 11, and on the oil return line 17, the refrigerant is bypassed according to the number of indoor units used. A refrigerant bypass control valve 20, such as a kind of solenoid valve for adjusting the degree, is provided.
상기와 같이 본 발명 냉매손실방지장치가 설치된 2실 에어컨의 작동은 실내기의 사용대수에 따라 다르게 작동된다.As described above, the operation of the two-room air conditioner installed with the present invention, the refrigerant loss preventing device operates differently depending on the number of indoor units used.
즉, 2실 에어컨에서의 압축기(11) 용량은 2실 운전용량에 맞추어서 제작되어 있기때문에 1실 운전시에는 압축기(11)의 용량이 실내기의 용량보다 큰 것을 감안하여 냉매바이패스조절밸브(20)를 계속 열어서 오일리턴라인(17)으로 오일과 함께 냉매의 일부를 바이패스 시킨다.That is, since the capacity of the compressor 11 in the two-room air conditioner is manufactured in accordance with the operation capacity of the two-room air conditioner, the refrigerant bypass control valve 20 is considered in consideration of the capacity of the compressor 11 being larger than that of the indoor unit in the one-room operation. ) And continue to open a portion of the refrigerant along with the oil to the oil return line (17).
그리고, 2실 운전시에는 냉매를 바이패스시킬 필요가 없으므로 냉매바이패스조절밸브(20) 닫은 상태로 계속 운전을 하고, 오일분리기(13)에 오일이 어느정도 분리된 상태에서 일정시간 동안만 냉매바이패스조절밸브(20)를 열어서 오일리턴라인(17)을 통하여 오일만 압축기(11)로 회수되도록 한다.In addition, since the refrigerant does not need to be bypassed in the two-room operation, the refrigerant bypass control valve 20 continues to operate in a closed state, and the refrigerant bypasses only for a predetermined time in a state in which oil is separated from the oil separator 13 to some extent. The pass control valve 20 is opened to recover only oil to the compressor 11 through the oil return line 17.
즉, 2실 운전시에는 오일분리기(13)의 오일을 압축기(11)로 회수시에 냉매바이패스조절밸브(20)를 잠깐만 열어서, 냉매는 바이패스되지 않고 오일만 압축기(11)로 회수되도록 하여 냉매의 손실을 방지하게 된다.That is, during operation of the two chambers, when the oil of the oil separator 13 is recovered to the compressor 11, the refrigerant bypass control valve 20 is opened briefly so that the refrigerant is not bypassed and only the oil is recovered to the compressor 11. To prevent loss of the refrigerant.
상기 2실 에어컨에서의 1실 운전시와 2실 운전시를 구분하여 냉매바이패스조절밸브(20)의 동작을 설명하였으나, 꼭 그에 한정하는 것은 아니고, 압축기(11)의 용량, 실내기의 크기 등에 따라 냉매의 손실이 발생되지 않도록 하려는 본 발명의 사상과 범주내에서 적합하게 조절하는 것이 바람직하다.The operation of the refrigerant bypass control valve 20 has been described by dividing the operation of the first chamber and the second chamber of the two-room air conditioner, but the present invention is not limited thereto, and the capacity of the compressor 11 and the size of the indoor unit are not limited thereto. Therefore, it is desirable to adjust appropriately within the spirit and scope of the present invention to avoid the loss of the refrigerant.
이상에서 상세히 설명한 바와 같이, 본 발명 멀티에어컨의 운전방법은 2실 에어컨의 오일분리기에서 분리된 오일을 압축기로 회수하기 위하여 설치된 오일리턴라인 상에 냉매바이패스조절밸브를 설치하고, 1실 또는 2실 운전시에는 냉매바이패스조절밸브를 계속열어서 냉매의 일부가 바이패스되도록 하고, 3실 또는 4실 운전시에는 냉매바이패스조절밸브를 닫고 운전하다가 일정시간만을 열어서 오일만 회수되도록 하여 냉매의 손실을 방지하는 효과가 있다.As described above in detail, the operation method of the present invention multi-air conditioner is provided with a refrigerant bypass control valve on an oil return line installed to recover oil separated from an oil separator of a two-room air conditioner to a compressor, and one or two chambers. In real operation, the refrigerant bypass control valve is continuously opened to bypass some of the refrigerant.In the 3 or 4 room operation, the refrigerant bypass control valve is closed and operated to open only a certain time so that oil is recovered. It is effective to prevent.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990027995A KR100360230B1 (en) | 1999-07-12 | 1999-07-12 | Operating method of multi-air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990027995A KR100360230B1 (en) | 1999-07-12 | 1999-07-12 | Operating method of multi-air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20010009575A KR20010009575A (en) | 2001-02-05 |
| KR100360230B1 true KR100360230B1 (en) | 2002-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990027995A KR100360230B1 (en) | 1999-07-12 | 1999-07-12 | Operating method of multi-air conditioner |
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| Country | Link |
|---|---|
| KR (1) | KR100360230B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871347A (en) * | 2017-02-07 | 2017-06-20 | 杨勇 | A kind of integrated air conditioner heat pump system of multifunctional single compressor and control method |
-
1999
- 1999-07-12 KR KR1019990027995A patent/KR100360230B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871347A (en) * | 2017-02-07 | 2017-06-20 | 杨勇 | A kind of integrated air conditioner heat pump system of multifunctional single compressor and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010009575A (en) | 2001-02-05 |
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