[특허]Multi-type air conditioner

LG Electronics Inc.

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Multi-type air conditioner

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25B-043/00
미국특허분류(USC)	062/474; 062/083; 062/085; 062/498
출원번호	US-0673130 (2003-09-30)
우선권정보	KR-10-2003-0002033(2003-01-13)
발명자 / 주소	Park,Jong Han Park,Young Min
출원인 / 주소	LG Electronics Inc.
대리인 / 주소	Greenblum &
인용정보	피인용 횟수 : 3 인용 특허 : 10

초록
▼

Multi-type air conditioner is disclosed for effective removal of foreign matters in refrigerant pipelines, including an outdoor unit having a compressor, an outdoor heat exchanger, a flow path control valve for controlling a flow path of the refrigerant from the compressor, and an outdoor unit piping system, a plurality of indoor units each having an indoor unit expansion device, an indoor heat exchanger, an indoor piping system, a distributor for receiving refrigerant from the outdoor unit, distributing the refrigerant to the indoor units proper to respective operation modes, and returning to the outdoor unit again, connection pipelines connected between the outdoor unit and the distributor, and foreign matter cutting off means mounted on each of the connection pipelines for prevention of the foreign matters from entering into the compressor of the outdoor unit.

대표
청구항
▼

What is claimed is: 1. A multi-type air conditioner comprising: an outdoor unit having a compressor, an outdoor heat exchanger, and an outdoor unit piping system; a plurality of indoor units each having an expansion device, an indoor heat exchanger, and an indoor piping system; connection pipelines connected between the outdoor unit and the indoor units; and a foreign matter cutoff device mounted on each of the connection pipelines for preventing foreign matter from entering into the compressor of the outdoor unit. 2. The multi-type air conditioner as claimed in claim 1, wherein the foreign matter cutoff device is mounted adjacent to ports of the outdoor unit connected to the connection pipelines. 3. The multi-type air conditioner as claimed in claim 1, further comprising a distributor located between ends of the connection pipelines, the distributor having ports to which the connection pipelines are connected, wherein the foreign matter cutoff device is mounted adjacent to a port of the distributor. 4. The multi-type air conditioner as claimed in claim 1, wherein the foreign matter cuttoff device comprises a strainer. 5. A multi-type air conditioner comprising: an outdoor unit having a compressor, an outdoor heat exchanger, a flow path control valve for controlling a flow path of refrigerant from the compressor, and an outdoor unit piping system; a plurality of indoor units each having an indoor unit expansion device, an indoor heat exchanger, and an indoor piping system; a distributor for receiving refrigerant from the outdoor unit, distributing the refrigerant to the indoor units in accordance with respective operation modes, and returning refrigerant to the outdoor unit; connection pipelines connected between the outdoor unit and the distributor; and a foreign matter cutoff device mounted on each of the connection pipelines for preventing foreign matter from entering into the compressor of the outdoor unit. 6. The multi-type air conditioner as claimed in claim 5, wherein the foreign matter cutoff device is mounted adjacent to ports of the outdoor unit connected to the connection pipelines. 7. The multi-type air conditioner as claimed in claim 6, wherein the foreign matter cutoff device is further mounted adjacent to a port of the indoor units having the connection pipelines connected thereto. 8. The multi-type air conditioner as claimed in claim 5, wherein the foreign matter cutoff device comprises a strainer. 9. The multi-type air conditioner as claimed in claim 5, wherein the multi-type air conditioner is connected to a plurality of areas and wherein the operation modes include: a first operation mode for cooling all areas, a second operation mode for heating all areas, a third operation mode for cooling a majority of areas and heating a minority of areas, and a fourth operation mode for heating a majority of areas and cooling a minority of areas. 10. The multi-type air conditioner as claimed in claim 5, wherein the flow path control valve includes: a first port in communication with an outlet of the compressor, a second port in communication with the outdoor heat exchanger, a third port in communication with an inlet of the compressor, and a fourth port blanked or connected to a blanked pipe piece. 11. The multi-type air conditioner as claimed in claim 10, wherein the outdoor unit piping system includes: a first pipeline connected between the outlet of the compressor and the first port of the flow path control valve, a second pipeline connected between the second port of the flow path control valve and a first port of the outdoor unit having the outdoor heat exchanger mounted thereon, a third pipeline connected between the first pipeline and the second pipeline of the outdoor unit, and a fourth pipeline connected between the third port of the flow path control valve and the inlet of the compressor having an intermediate point connected to a third port of the outdoor unit. 12. The multi-type air conditioner as claimed in claim 11, wherein the outdoor unit further includes an accumulator mounted on the fourth pipeline between the third port of the outdoor unit and the inlet of the compressor. 13. The multi-type air conditioner as claimed in claim 11, wherein the outdoor unit further includes: a check valve mounted on the second pipeline between the outdoor heat exchanger and the first port of the outdoor unit, and an outdoor unit electronic expansion device mounted on the second pipeline in parallel with the check valve. 14. The multi-type air conditioner as claimed in claim 13, wherein the check valve only permits refrigerant flow from the outdoor heat exchanger toward the first port of the outdoor unit. 15. The multi-type air conditioner as claimed in claim 11, wherein the connection pipelines include: a first connection pipeline connected between the first port of the outdoor unit and a first port of the distributor, a second connection pipeline connected between the second port of the outdoor unit and a second port of the distributor, and a third connection pipeline connected between the third port of the outdoor unit and a third port of the distributor. 16. The multi-type air conditioner as claimed in claim 15, wherein the distributor includes: a distributor piping system for guiding refrigerant flow from the outdoor unit to the indoor units, and from the indoor units to the outdoor unit, and a valve bank mounted on the distributor piping system for controlling the refrigerant flow in the distributor piping system in accordance with the respective operation modes. 17. The multi-type air conditioner as claimed in claim 16, wherein the distributor piping system includes: a liquid refrigerant pipeline connected to a first port of the distributor, a plurality of liquid refrigerant branch pipelines branched from the liquid refrigerant pipeline and connected to the indoor unit expansion devices in the indoor units respectively, a gas refrigerant pipeline connected to a second port of the distributor, a plurality of first gas refrigerant branch pipelines branched from the gas refrigerant pipeline and connected to the indoor heat exchangers of the indoor units respectively, a plurality of second gas refrigerant branch pipelines branched from intermediate points of the first gas refrigerant branch pipelines respectively, a return pipeline connected to all the second gas refrigerant pipelines, and connected to a third port of the distributor. 18. The multi-type air conditioner as claimed in claim 17, wherein the valve bank includes a plurality of open/close valves mounted on the first and second gas refrigerant branch pipelines. 19. The multi-type air conditioner as claimed in claim 18, wherein the distributor further includes a liquefaction preventer which prevents liquefied refrigerant discharged from the compressor from filling the third pipeline. 20. The multi-type air conditioner as claimed in claim 19, wherein the liquefaction preventer includes: a bypass pipeline connected between the return pipeline and the gas refrigerant pipeline, and a distributor expansion device on the bypass pipeline.

인용문헌 (10)

이 특허를 인용한 특허 (3)

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특허 상세정보

Multi-type air conditioner

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Multi-type air conditioner

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이 특허를 인용한 특허 (3)

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