[특허]Vehicular air-conditioning unit

DENSO CORPORATION

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특허 상세정보

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Vehicular air-conditioning unit

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F25D-017/04 B60H-001/00 B60H-001/32
출원번호	US-0021761 (2014-09-01)
등록번호	US-9802463 (2017-10-31)
우선권정보	JP-2013-193027 (2013-09-18)
국제출원번호	PCT/JP2014/004466 (2014-09-01)
국제공개번호	WO2015/040803 (2015-03-26)
발명자 / 주소	Maeda, Kenichiro Kato, Shinya
출원인 / 주소	DENSO CORPORATION
대리인 / 주소	Harness, Dickey & Pierce, P.L.C.
인용정보	피인용 횟수 : 1 인용 특허 : 46

초록
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A vehicular air-conditioning unit has an air-conditioning case, a first ventilation passage and a second ventilation passage, a first communication-ventilation passage defined in the air-conditioning case, the first communication-ventilation passage through which one end of the first ventilation passage communicates with one end of the second ventilation passage, a first heat exchanger that heats or cools air flowing in the first ventilation passage, a second heat exchanger that heats or cools air flowing in the second ventilation passage, and a blowing mode switching device setting any one of blowing modes. The blowing modes include (i) a first blowing mode in which air is blown into a vehicle compartment after flowing through the first ventilation passage and in which air is blown into the vehicle compartment after flowing through the second ventilation passage and (ii) a second blowing mode in which air flows into the second ventilation passage through the first communication-ventilation passage after flowing through the first ventilation passage and is blown into the vehicle compartment.

대표
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1. A vehicular air-conditioning unit comprising: an air-conditioning case;a first ventilation passage and a second ventilation passage defined in parallel with each other in the air-conditioning case;a first communication-ventilation passage defined in the air-conditioning case, the first communication-ventilation passage through which one end of the first ventilation passage communicates with one end of the second ventilation passage;a first heat exchanger that is disposed in the first ventilation passage and heats or cools air flowing in the first ventilation passage between the one end and an other end of the first ventilation passage;a second heat exchanger that is disposed in the second ventilation passage and heats or cools air flowing in the second ventilation passage between the one end and an other end of the second ventilation passage; anda blowing mode switching device setting any one of blowing modes, whereinthe blowing modes include: a first blowing mode (i) in which air is introduced from outside of the air-conditioning case to the one end of the first ventilation passage, the air flows from the one end to the other end of the first ventilation passage, and the air is blown into a vehicle compartment from the other end of the first ventilation passage, and (ii) in which air is introduced from outside of the air-conditioning case to the one end of the second ventilation passage, the air flows from the one end to the other end of the second ventilation passage, and the air is blown into the vehicle compartment from the other end of the second ventilation passage; anda second blowing mode in which (i) air is introduced from outside of the air-conditioning case to the other end of the first ventilation passage, (ii) the air flows from the other end to the one end of the first ventilation passage and flows to the one end of the second ventilation passage through the first communication-ventilation passage, (iii) the air flowing to the one end of the second ventilation passage flows from the one end of the second ventilation passage to the other end of the second ventilation passage, and (iv) the air is blown from the other end of the second ventilation passage into the vehicle compartment. 2. The vehicular air-conditioning unit according to claim 1, further comprising a first blower and a second blower blowing air, whereinthe air-conditioning case has: an air introducing portion introducing air from outside of the air-conditioning case;a first-blower housing portion housing the first blower;a second-blower housing portion housing the second blower;a second communication-ventilation passage through which the first-blower housing portion communicates with the one end of the second ventilation passage; anda circular ventilation passage through which the one end of the first ventilation passage communicates with the air introducing portion,the first communication-ventilation passage is (i) connected to the one end of the first ventilation passage through the circular ventilation passage at one end of the first communication-ventilation passage and (ii) connected to the one end of the second ventilation passage through the second-blower housing portion at an other end of the first communication-ventilation passage, andthe blowing mode switching device: in the first blowing mode, (i) closes the circular ventilation passage and the second communication-ventilation passage and (ii) introduces air, which is introduced from outside of the air-conditioning case through the air introducing portion, to be blown to the one end of the first ventilation passage by the first blower and to be blown to the one end of the second ventilation passage by the second blower; andin the second blowing mode, (i) blocks air that is introduced from outside of the air-conditioning case through the air introducing portion, (ii) opens the circular ventilation passage and the second communication-ventilation passage, and (iii) introduces air, which flows from the other end to the one end of the first ventilation passage, to be blown to the one end of the second ventilation passage through the circular ventilation passage and the second communication-ventilation passage by the first blower and to be blown to the one end of the second ventilation passage through the circular ventilation passage and the first communication-ventilation passage by the second blower. 3. The vehicular air-conditioning unit according to claim 2, wherein the blowing mode switching device includes a switching portion alternatively set between the first ventilation passage and the second ventilation passage as a target to which the first blower blows air. 4. The vehicular air-conditioning unit according to claim 1, further comprising a first blower and a second blower blowing air, whereinthe air-conditioning case has: an air introducing portion introducing air from outside of the air-conditioning case;a first-blower housing portion housing the first blower; anda second-blower housing portion housing the second blower,the first communication-ventilation passage is (i) connected to the one end of the first ventilation passage through the first-blower housing portion at one end of the first communication-ventilation passage and (ii) connected to the one end of the second ventilation passage through the second-blower housing portion at an other end of the first communication-ventilation passage, andthe blowing mode switching device: in the first blowing mode, introduces air, which is introduced from outside of the air-conditioning case through the air introducing portion, to be blown to the one end of the first ventilation passage by the first blower and to be blown to the one end of the second ventilation passage by the second blower; andin the second blowing mode, (i) blocks air that is introduced from outside of the air-conditioning case through the air introducing portion and (ii) introduces air, which flows from the other end to the one end of the first ventilation passage, to be blown to the one end of the second ventilation passage through the first communication-ventilation passage by both the first blower and the second blower or by the second blower. 5. The vehicular air-conditioning unit according to claim 1, further comprising a blower blowing air, whereinthe blowing mode switching device includes a switching portion switching a target to which the blower blows air,the air-conditioning case has: an air introducing portion introducing air from outside of the air-conditioning case; anda blower housing portion housing the blower,the first communication-ventilation passage is (i) connected to the one end of the first ventilation passage and the air introducing portion at one end of the first communication-ventilation passage and (ii) connected to the one end of the second ventilation passage through the blower housing portion at an other end of the first communication-ventilation passage,the switching portion is switched between (i) a first switching position that disallows air to be blown to the first ventilation passage by the blower, allows air to be blown to the second ventilation passage by the blower, and opens the first ventilation passage to the first communication-ventilation passage and (ii) a second switching position that allows air to be blown to both the first ventilation passage and the second ventilation passage by the blower and blocks a communication between the first ventilation passage and the first communication-ventilation passage, andthe blowing mode switching device: in the first blowing mode, (i) sets the switching portion to the second switching position and (ii) introduces air, which is introduced from outside of the air-conditioning case through the air introducing portion, to be blown to both the one end of the first ventilation passage and the one end of the second ventilation passage by the blower; andin the second blowing mode, (i) sets the switching portion to the first switching position, (ii) blocks air that is introduced from outside of the air-conditioning case through the air introducing portion, and (iii) introduces air, which flows from the other end to the one end of the first ventilation passage, to be blown to the one end of the second ventilation passage by the blower through the first communication-ventilation passage. 6. The vehicular air-conditioning unit according to claim 1, wherein the air-conditioning case has an air outlet from which air is blown into the vehicle compartment in any one of the blowing modes except for the second blowing mode, andthe blowing mode switching device introduces air from the vehicle compartment to the other end of the first ventilation passage through the air outlet in the second blowing mode. 7. The vehicular air-conditioning unit according to claim 1, wherein the air-conditioning case has a defroster outlet, a face outlet, and a foot outlet, andin the second blowing mode, the blowing mode switching device (i) introduces air from the vehicle compartment to the other end of the first ventilation passage through the defroster outlet and (ii) introduces air that is in the air-conditioning unit to be blown to the vehicle compartment from the face outlet or the foot outlet through the other end of the second ventilation passage. 8. The vehicular air-conditioning unit according to claim 1, further comprising: a first blower that draws air from outside of the air-conditioning case and blows the air to the other end of the first ventilation passage or that draws air from the other end of the first ventilation passage and blows the air into the vehicle compartment;a second blower that draws air from the other end of the second ventilation passage and blows the air into the vehicle compartment; andan air introducing portion that is defined in the air-conditioning case and introduces air from outside of the air-conditioning case to both the one end of the first ventilation passage and the one end of the second ventilation passage, whereinthe blowing mode switching device: in the first blowing mode, introduces air, which is introduced from outside of the air-conditioning case through the air introducing portion, to be drawn into the first blower after flowing from the one end to the other end of the first ventilation passage and to be drawn into the second blower after flowing from the one end to the other end of the second ventilation passage; andin the second blowing mode, introduces air to be drawn into the first blower from outside of the air-conditioning case and to be blown to the other end of the first ventilation passage by the first blower and introduces air to be drawn into the second blower from the other end of the second ventilation passage and to be blown into the vehicle compartment by the second blower. 9. The vehicular air-conditioning unit according to claim 8, wherein the air introducing portion has an outside-air introducing port that communicates with outside of the vehicle compartment and an inside-air introducing port that communicates with inside of the vehicle compartment,the blowing mode switching device includes an introducing-port switching portion that opens one of the outside-air introducing port and the inside-air introducing port and closes the other one of the outside-air introducing port and the inside-air introducing port, andin the second blowing mode, the blowing mode switching device closes one of the outside-air introducing port and the inside-air introducing port by the introducing-port switching portion and increases an air volume blown by the second blower to be larger than an air volume blown by the first blower. 10. The vehicular air-conditioning unit according to claim 8, wherein the air conditioning case has a defroster outlet, a face outlet, and an air introducing port introducing air from around a driver seat in the vehicle compartment into the air-conditioning case, andin the second blowing mode, the blowing mode switching device (i) introduces air to be drawn into the first blower from around the driver seat through the air introducing port and (ii) introduces air to be drawn into the second blower from the other end of the second ventilation passage and to be blown into the vehicle compartment through the defroster outlet and the face outlet by the second blower. 11. The vehicular air-conditioning unit according to claim 1, wherein both the first heat exchanger and the second heat exchanger are a cooling heat exchanger, andthe blowing mode switching device sets the first blowing mode when a temperature in the vehicle compartment is higher than or equal to a predetermined threshold temperature. 12. The vehicular air-conditioning unit according to claim 11, wherein the blowing mode switching device sets the second blowing mode when a temperature in the vehicle compartment is lower than the predetermined threshold temperature. 13. The vehicular air-conditioning unit according to claim 1, wherein the blowing mode switching device sets the first blowing mode to increase an air volume that is blown into the vehicle compartment to be larger than that in the second blowing mode.

이 특허에 인용된 특허 (46)

이 특허를 인용한 특허 피인용횟수: 1

Gesell, Bodo. Blower assembly for a vehicle air conditioning unit and method for operating a vehicle air conditioning unit. USP20180810059171.

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Vehicular air-conditioning unit

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