IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0818236
(2004-04-05)
|
등록번호 |
US-7377309
(2008-05-27)
|
우선권정보 |
JP-2003-106743(2003-04-10) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Harness, Dickey & Pierce, PLC
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인용정보 |
피인용 횟수 :
1 인용 특허 :
5 |
초록
▼
In a unit case of a vehicle air conditioning apparatus, air mix chamber is not provided. Cooled air cooled by an evaporator and heated air heated by a heater core are directly introduced to a face opening and a foot opening of the case and then mixed in a face duct and a foot duct. The case has a g
In a unit case of a vehicle air conditioning apparatus, air mix chamber is not provided. Cooled air cooled by an evaporator and heated air heated by a heater core are directly introduced to a face opening and a foot opening of the case and then mixed in a face duct and a foot duct. The case has a guide for directing a flow of the heated air or the cooled air. The guide, the foot opening and the face opening are arranged such that the amount of heated air passing through the foot opening is larger than that of the cooled air and the amount of cooled air passing through the face opening is larger than that of the heated air in a bi-level mode. Accordingly, a temperature of air blown from a foot outlet into a passenger compartment is different from that of air blown from a face outlet.
대표청구항
▼
What is claimed is: 1. An air conditioning apparatus for performing an air conditioning operation in a rear space of a passenger compartment of a vehicle, the rear space being on a rear side of a front seat of the vehicle, the apparatus comprising: an air blowing device for blowing air; an air cond
What is claimed is: 1. An air conditioning apparatus for performing an air conditioning operation in a rear space of a passenger compartment of a vehicle, the rear space being on a rear side of a front seat of the vehicle, the apparatus comprising: an air blowing device for blowing air; an air conditioner case mounted adjacent to the rear space of the passenger compartment of the vehicle defining an air passage through which the air blown by the air blowing device flows, the case forming a first opening and a second opening at a downstream end of the air passage; a first heat exchanger provided in the air conditioner case for cooling the air blown by the air blowing device; a second heat exchanger provided in the air conditioner case for heating cooled air that has passed through the first heat exchanger; a bypass passage provided in the air conditioner case to allow the cooled air to pass therethrough while bypassing the second heat exchanger; a passage-switching door provided in the air conditioner case to distribute the cooled air toward the second heat exchanger and the bypass passage; a mode-switching door provided in the air conditioner case to distribute the cooled air bypassed the second heat exchanger and heated air heated by the second heat exchanger toward the first opening and the second opening; a guide provided at a position upstream of the mode-switching door; a first duct connected to the first opening for leading air from the first opening to an upper area of the passenger compartment; and a second duct connected to the second opening for leading air from the second opening to a lower area of the passenger compartment; wherein the first opening is aligned with a flow direction of the cooled air passing through the bypass passage; the second heat exchanger is located under the bypass passage, the second opening is disposed on a first side wall of the air conditioner case, the guide is disposed on a lower portion of a second side wall of the air conditioner case, the second side wall being opposed to the first side wall, the guide projects from the second side wall toward the second opening for directing the heated air toward the second opening. 2. The air conditioning apparatus according to claim 1, wherein the mode-switching door is held rotatable about a rotation axis and is disposed such that the rotation axis is perpendicular to flow directions of the cooled air and the heated air. 3. The air conditioning apparatus according to claim 1, wherein the passage-switching door is held rotatable about a rotation axis and the mode-switching door is held rotatable about a rotation axis, wherein the passage-switching door and the mode-switching door are disposed such that the rotation axes are perpendicular to each other. 4. The air conditioning apparatus according to claim 1, wherein the first duct defines a first outlet through which the air is blown into the passenger compartment and the second duct defines a second outlet through which the air is blown into the passenger compartment, wherein the first outlet is located at a position higher than that of the second outlet in the passenger compartment. 5. The air conditioning apparatus according to claim 1, wherein the second heat exchanger is inclined such that an upper end thereof is located closer to the downstream end of the air conditioner case than a lower end thereof, the air conditioner case forms an inclined bottom wall that is substantially parallel to the second heat exchanger and located at a position directly downstream of the second heat exchanger across a clearance for directing the heated air toward the downstream end, and the guide is disposed directly above the inclined bottom wall such that the heated air flowing along the inclined bottom wall is partly directed toward the second opening. 6. The air conditioning apparatus according to claim 1, wherein the second heat exchanger is disposed in an inclined position and the case forms a sloped wall parallel to the second heat exchanger at a position between the second heat exchanger and the guide so that the flow of the heated air is directed toward the guide by the sloped wall and directed toward the second opening by the guide. 7. The air conditioning apparatus according to claim 1, wherein a foot opening is open in a direction substantially perpendicular to an opening direction of the first opening. 8. The air conditioning apparatus according to claim 1, wherein the mode-switching door is a plate door having a rotation shaft that extends in a vertical direction and configured to open and close the first opening and the second opening. 9. The air conditioning apparatus according to claim 1, wherein the mode-switching door is configured to open and close the first and second openings, and when the mode-switching door is moved to a bi-level mode position at which the first opening and the second opening are opened, an end of the mode-switching door is adjacent to a projecting end of the guide. 10. An air conditioning apparatus for performing an air conditioning operation in a rear space of a passenger compartment of a vehicle, the rear space being on a rear side of a front seat of the vehicle, the apparatus comprising: an air blowing device for blowing air; an air conditioner case mounted adjacent to the rear space of the passenger compartment of the vehicle defining an air passage through which the air blown by the air blowing device flows, the case forming a first opening providing air flow from the air conditioning case in a first direction and a second opening providing air flow from the air conditioning case in a second direction downstream of the air passage; a first heat exchanger provided in the air conditioner case for cooling air; a second heat exchanger provided in the air conditioner case for heating air; a passage-switching door provided in the air conditioner case to distribute cooled air cooled by the first heat exchanger toward the second heat exchanger and a bypass passage that is defined such that the cooled air bypasses the second heat exchanger, the second heat exchanger being disposed under the bypass passage; a mode-switching door provided in the air conditioner case to distribute the cooled air bypassed the second heat exchanger and heated air heated by the second heat exchanger toward the first opening and the second opening; a guide provided at a position upstream of the mode-switching door; a first duct connected to the first opening for leading air from the first opening to the passenger compartment; and a second duct connected to the second opening for leading air from the second opening to the passenger compartment, wherein the first direction of the first opening is aligned with a flow direction of the cooled air passing through the bypass passage and the guide is disposed such that the heated air passing through the second heat exchanger is directed by the guide to be aligned with the second direction of the second opening; the second opening is formed on a first side of the air conditioner case; the guide is disposed on a second side of the air conditioner case opposite to the first side at a position lower than the bypass passage; the guide proiects from the second side toward the second opening; and the mode-switching door is a plate door having an axis of rotation in a substantially vertical direction. 11. The air conditioning apparatus according to claim 10, wherein the first direction is generally perpendicular to the second direction. 12. The air conditioning apparatus according to claim 10, wherein the passage-switching door is held rotatable about a rotation axis and the mode-switching door is held rotatable about a rotation axis, wherein the passage-switching door and the mode-switching door are disposed such that the rotation axes are perpendicular to each other. 13. The air conditioning apparatus according to claim 10, wherein the guide is provided by a recess formed on the case. 14. The air conditioning apparatus according to claim 10, wherein the second heat exchanger is disposed in an inclined position and the case forms a sloped wall parallel to the second heat exchanger at a position between the second heat exchanger and the guide so that the flow of the heated air is directed toward the guide by the sloped wall and directed toward the second opening by the guide. 15. An air conditioning apparatus for a vehicle, comprising: an air blowing device for blowing air; an air conditioner case defining an air passage through which the air blown by the air blowing device flows, the case forming a first opening and a second opening downstream of the air passage; a first heat exchanger provided in the air conditioner case for cooling air; a second heat exchanger provided in the air conditioner case for heating air; a passage-switching door provided in the air conditioner case to distribute cooled air cooled by the first heat exchanger toward the second heat exchanger and a bypass passage having a cross-section that extends from the second heat exchanger to the air conditioner case in an alignment direction such that the cooled air bypasses the second heat exchanger; a mode-switching door provided in the air conditioner case to distribute the cooled air that bypassed the second heat exchanger and heated air heated by the second heat exchanger toward the first opening and the second opening; a guide provided at a position upstream of the mode-switching door; a first duct connected to the first opening for leading air from the first opening to a passenger compartment in a first air flow direction; and a second duct connected to the second opening for leading air from the second opening to the passenger compartment in a second air flow direction, wherein the first air flow direction is generally parallel with a flow direction of the cooled air passing through the bypass passage and is generally perpendicular to the alignment direction and the guide is disposed on a side of the air conditioner case opposite said second opening such that a flow of the heated air is directed by the guide to be generally parallel with the second air flow direction; and the second air flow direction is generally perpendicular to the alignment direction. 16. The air conditioning apparatus according to claim 15, wherein the second opening is provided on a side wall of the air conditioner case that defines the air passage. 17. The air conditioning apparatus according to claim 15, wherein the first air flow direction is generally perpendicular to the second air flow direction. 18. The air conditioning apparatus according to claim 15, wherein the passage-switching door is held rotatable about a rotation axis and the mode-switching door is held rotatable about a rotation axis, wherein the passage-switching switching door and the mode-switching door are disposed such that the rotation axes are perpendicular to each other. 19. The air conditioning apparatus according to claim 15, wherein the guide is provided by a recess formed on the case. 20. The air conditioning apparatus according to claim 15, wherein the second heat exchanger is disposed in an inclined position and the case forms a sloped wall parallel to the second heat exchanger at a position between the second heat exchanger and the guide so that the flow of the heated air is directed toward the guide by the sloped wall and directed toward the second opening by the guide. 21. An air conditioning apparatus mounted on a rear portion of a passenger compartment of a vehicle the rear space being on a rear side of a front seat of the vehicle, the apparatus comprising: an air blowing device for generating a flow of air; an air conditioner case mounted adjacent to the rear space of the passenger compartment of the vehicle having a first end and a second end, the first end being in communication with the air blowing device, the second end including a face opening through which air to be introduced toward a rear upper area of the passenger compartment flows and a foot opening through which air to be introduced toward a rear lower area of the passenger compartment flows; a first heat exchanger disposed in the air conditioner case for cooling air blown by the air blowing device; a second heat exchanger disposed in a lower portion of the air conditioner case for heating cooled air that has passed through the first heat exchanger; a bypass passage provided in the air conditioner case above the second heat exchanger for allowing the cooled air to bypass the second heat exchanger, the bypass passage extending from the first heat exchanger toward the second end of the air conditioner case; and a mode-switching door disposed to open and close the face opening and the foot opening, the mode-switching door has a rotation axis that extends in a substantially vertical direction, wherein the face opening is open in a direction substantially parallel to a longitudinal axis of the bypass passage, the foot opening is disposed on a first side of the air conditioner case, the air conditioner case further has a guide on a lower portion of a second side of the air conditioner case, the second side being opposed to the first side across the bypass passage in a substantially horizontal direction, and the guide is located downstream of the second heat exchanger and projects toward the foot opening for introducing a part of the heated air toward the foot opening. 22. The air conditioning apparatus according to claim 21, wherein the rotation shaft of the mode-switching door is located adjacent to the first side of the air conditioner case and is movable to a bi-level mode position at which the face and foot openings are open, and when the mode-switching door is at the bi-level mode position, an end of the mode-switching door is aligned with a projecting end of the guide. 23. The air conditioning apparatus according to claim 21, wherein the face and foot openings are located on a substantially same level as the bypass passage with respect to the vertical direction. 24. The air conditioning apparatus according to claim 23, wherein the air conditioner case has an inclined bottom wall between the first and second sides and at a position directly downstream of the second heat exchanger for introducing the heated air from the second heat exchanger in a diagonally upward direction, and the guide is disposed above the inclined bottom wall for introducing a part of the heated air flowing along the inclined bottom wall toward the foot opening. 25. The air conditioning apparatus according to claim 21, wherein the air conditioner case is mounted on a rear side trim space of a vehicle such that the longitudinal axis of the bypass passage extends in a vehicle front and rear direction, the second side of the air conditioner case is adjacent to an outer panel of the vehicle, and the first side of the air conditioner case is adjacent to an inside of the passenger compartment.
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