IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0754514
(2004-01-12)
|
우선권정보 |
KR-0037653 (2003-06-11) |
발명자
/ 주소 |
- Kim, Kyung Hwan
- Choi, Ho Seon
- Lee, Gi Seop
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
2 |
초록
▼
Air conditioning system including an outdoor unit, a compact indoor unit, air supply duct, air discharge duct, and preheat exchanger. An indoor heat exchanger in the indoor unit has a space therein in communication with a room, a fan in the indoor unit provided in the space draws air and discharges
Air conditioning system including an outdoor unit, a compact indoor unit, air supply duct, air discharge duct, and preheat exchanger. An indoor heat exchanger in the indoor unit has a space therein in communication with a room, a fan in the indoor unit provided in the space draws air and discharges through the indoor heat exchanger. A ventilation guide duct in the indoor unit is provided on an underside of the indoor heat exchanger for guiding the external air to the room through the fan, and the room air to the outside of the room. The air supply duct and the air discharge duct have one ends connected to the ventilation guide duct for guiding the external air to the room, and the room air to the outside of the room, respectively. The preheat exchanger is provided in the middle of the air supply duct and the air discharge duct, for indirect heat exchange of the external air and the room air passing through the air supply duct and the air discharge duct.
대표청구항
▼
1. An air conditioning system comprising:an outdoor unit having a compressor and an outdoor heat exchanger; an indoor unit installed in a ceiling, the indoor unit comprising: an indoor heat exchanger defining a space therein in communication with a room; a fan in the space that draws air in and that
1. An air conditioning system comprising:an outdoor unit having a compressor and an outdoor heat exchanger; an indoor unit installed in a ceiling, the indoor unit comprising: an indoor heat exchanger defining a space therein in communication with a room; a fan in the space that draws air in and that discharges air to the room through the indoor heat exchanger; and a ventilation guide duct on an underside of the indoor heat exchanger, the ventilation guide duct guiding external air to the room through the fan and room air from the room; an air supply duct and an air discharge duct each having one end connected to the ventilation guide duct for guiding the external air to the room and the room air from the room, respectively; and a preheat exchanger provided between the air supply duct and the air discharge duct, the preheat exchanger indirectly exchanging heat between external air and room air passing through the air supply duct and the air discharge duct. 2. The air conditioning system as claimed in claim 1, wherein the fan includes a centrifugal fan that draws air from below the fan and discharges in a radial direction as the fan rotates.3. The air conditioning system as claimed in claim 1, wherein the ventilation guide duct includes:at least one first flow passage in communication with the space, the room, and the air supply duct, the first flow passage guiding the external air to the fan and the room air from the room; at least one second flow passage that guides the air passed through the fan and the indoor heat exchanger to the room, and at least one third flow passage that guides the room air to the air discharge duct. 4. The air conditioning system as claimed in claim 3, wherein the air supply duct and the air discharge duct each include at least one branch duct connected to the first flow passage and the third flow passage, respectively.5. The air conditioning system as claimed in claim 4, wherein the air supply duct and the air discharge duct include the same number of branch ducts to obtain the same flow rates.6. The air conditioning system as claimed in claim 4, wherein the air discharge duct includes a number of branch ducts greater than a number of branch ducts of the air supply duct, so that a room air discharge rate from the room is higher than an external air supply rate into the room.7. The air conditioning system as claimed in claim 4, wherein the air supply duct includes a number of branch ducts greater than a number of branch ducts of the air discharge duct, so that an external air supply rate into the room is higher than a room air discharge rate from the room.8. The air conditioning system as claimed in claim 3, wherein the ventilation guide duct includes:a duct body on an underside of the indoor heat exchanger, and a panel attached to an underside of the duct body. 9. The air conditioning system as claimed in claim 8, wherein the duct body includes.a first hole provided in a central part thereof, extending in an up/down direction, and forming a part of the first flow passage in communication with the air supply duct, a second hole provided around the first hole, extending in the up/down direction, and forming a part of the second flow passage, and a third hole provided around the first hole, extending in the up/down direction, and forming a part of the third flow passage in communication with the air discharge duct. 10. The air conditioning system as claimed in claim 8, wherein the duct body includes:first ducts surrounding a central part of the duct body to form a cavity in the central part that is in communication with the space and the room, each of the first ducts having an inside forming a part of the second flow passage, and a compartment plate arranged to divide the cavity into the first flow passage and the third flow passage. 11. The air conditioning system as claimed in claim 10, wherein the duct body further includes connection plates connecting side ends of adjacent first ducts, andwherein one of the air supply duct and the air discharge duct is connected selectively to the duct body. 12. The air conditioning system as claimed in claim 10, wherein the first flow passage is formed in a central part of the cavity, and the third flow passage is formed inside of a corner at which the first ducts are connected.13. The air conditioning system as claimed in claim 10, wherein the compartment plate has two ends connected to two adjacent first ducts.14. The air conditioning system as claimed in claim 8, wherein the panel includes:a first port forming parts of the first and third flow passages, and a second port forming a part of the second flow passage. 15. The air conditioning system as claimed in claim 14, wherein the panel further includes a mesh provided to the first port.16. The air conditioning system as claimed in claim 9, wherein the fan is provided over the first hole.17. The air conditioning system as claimed in claim 9, wherein the indoor heat exchanger is located on the duct body along a position between the first hole and the second hole.18. The air conditioning system as claimed in claim 1, further comprising an air supply fan on the air supply duct for supplying external air into the room.19. The air conditioning system as claimed in claim 1, further comprising an air discharge fan on the air discharge duct for discharging room air from the room.20. The air conditioning system as claimed in claim 1, further comprising a damper in the air supply duct for controlling a flow rate of external air supplied to the room.21. The air conditioning system as claimed in claim 1, further comprising a damper in the air discharge duct for controlling a flow rate of room air discharged from the room.22. The air conditioning system as claimed in claim 3, wherein the ventilation guide duct further includes a damper mounted in a part connected to the air supply duct for controlling a flow rate of external air supplied to the room.23. The air conditioning system as claimed in claim 3, wherein the ventilation guide duct further includes a damper, mounted in a part connected to the air discharge duct, for controlling a flow rate of the room air discharged from the room.
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