초록 ▼

There is provided an automotive air conditioning system comprising a primary blower disposed at a front part of a vehicle having a passenger compartment constituted by a front-seat side space and a rear-seat side space, a case disposed in the front part of the vehicle in such a manner that air is ca

There is provided an automotive air conditioning system comprising a primary blower disposed at a front part of a vehicle having a passenger compartment constituted by a front-seat side space and a rear-seat side space, a case disposed in the front part of the vehicle in such a manner that air is caused to flow from one end to the other end thereof by means of the primary blower and having a lower opening which is opened therein at a lower portion at the other end thereof, a heat exchanger disposed within the case, a scroll case disposed below the case and having opened therein an outlet and an inlet connecting to the lower opening, an centrifugal fan accommodated in the scroll case and having a rotating shaft which is oriented in a substantially vertical direction, a secondary blower having driving means for driving the centrifugal fan, and a rear seat duct connected to the outlet and communicating with the rear-seat side space.

대표청구항 ▼

The invention claimed is: 1. An automotive air conditioning system comprising: a primary blower disposed at a front part of a vehicle having a passenger compartment constituted by a front-seat side space and a rear-seat side space; a primary case disposed in the front part of the vehicle in such a

The invention claimed is: 1. An automotive air conditioning system comprising: a primary blower disposed at a front part of a vehicle having a passenger compartment constituted by a front-seat side space and a rear-seat side space; a primary case disposed in the front part of the vehicle in such a manner that air is caused to flow from one end to the other end thereof by means of the primary blower and having a lower opening which is opened at a lower portion of the primary case, the lower opening being formed in a bottom face of the primary case; an evaporator disposed in the primary case for cooling air that passes therethrough; a heating heat exchanger for heating air that passes therethrough disposed within the primary case downstream of the evaporator; a bypass passage within the primary case to allow air flow to bypass the heating heat exchanger disposed directly below the heating heat exchanger, the lower, opening being disposed directly below the bypass passage; a scroll case disposed below the primary case and having opened therein an outlet and an inlet connecting to the lower opening, the inlet being provided on an upper face of the scroll case; an centrifugal fan accommodated in the scroll case and having a rotating shaft which is oriented in a substantially vertical direction; a secondary blower having driving means for driving the centrifugal fan; and a rear seat duct connected to the outlet and communicating with the rear-seat side space. 2. An automotive air conditioning system as set forth in claim 1 wherein a rear-seat side heated air flow path along which air that has passed through the heating heat exchanger is caused to flow, and a rear-seat side cooled air flow path along which air that has bypassed a lower side of the heating heat exchanger is caused to flow, are provided below the heating heat exchanger, wherein the lower opening is made to open at a position facing a lower portion of the heating heat exchanger, and wherein the inlet draws in either air that flows along the rear-seat side heated air flow path or air that flows along the rear-seat side cooled air flow path, or both. 3. An automotive air conditioning system as set forth in claim 2, wherein a rear-seat side air mixing means is provided for dividing a flow of air sent into the primary case by the primary blower into a flow of air that passes through the rear-seat side cooled air flow path and a flow of air that is heated by the heating heat exchanger. 4. An automotive air conditioning system as set forth in claim 3, wherein front-seat side openings communicating with the front-seat side space are opened above the other end of the primary case, wherein a front-seat side heated air flow path along which air that has passed through the heating heat exchanger flows and a front-seat side cooled air flow path which bypasses the heating heat exchanger on an upper side thereof are provided above the heat exchanger, and wherein front-seat side air mixing means for dividing a flow of air sent into the primary case by means of the primary blower into a flow of air that passes through the front-seat side cooled air flow path and a flow of air that is heated by the heating heat exchanger. 5. An automotive air conditioning system as set forth in claim 4, wherein a rear-seat side heated air flow path opening/closing means is provided for closing the rear-seat side heated air flow path. 6. The automotive air conditioning system as set forth in claim 1, wherein the centrifugal fan is disposed directly below the bypass passage. 7. The automotive air conditioning system as set forth in claim 1, wherein the rotating shaft defines an axis of rotation extending through the heating heat exchanger. 8. The automotive air conditioning system as set forth in claim 1, wherein the primary case defines a front-seat side cooled air flow path which guides air bypassing an upper side of the heat exchanger into openings which communicate with the front-seat side space and the scroll case and the centrifugal fan are disposed below the front-seat side cooled air flow path. 9. The automotive air conditioning system as set forth in claim 1, wherein the air conditioning case defines a front-seat side cooled air flow path which guides air bypassing an upper side of the heating heat exchanger into openings which communicate with the front-seat side space and the secondary case and the secondary blower are disposed below the front-seat side cooled air flow path. 10. An automotive air conditioning system comprising: a primary blower disposed at a front part of a vehicle having a passenger compartment constituted by a front-seat side space and a rear-seat side space; a primary case disposed at the front part of the vehicle in such a manner that air is caused to flow from one end to the other end thereof by the primary blower; an evaporator disposed in the primary case for cooling air that passes therethrough; a heating heat exchanger for heating air that passes therethrough disposed within the primary case downstream of the evaporator; a scroll case disposed below the primary case, the scroll case having an inlet which draws in air from the primary case and an outlet, the inlet of the scroll case being provided on an upper face of the scroll case, the inlet drawing the air from the primary case through a lower opening on a bottom face of the primary case; a bypass passage within the primary case to allow air flow to bypass the heating heat exchanger disposed directly below the heating heat exchanger, the lower opening being disposed directly below the bypass passage; a centrifugal fan accommodated in the scroll case and having a rotating shaft which is oriented in a substantially vertical direction; a secondary blower having a driving means for driving the centrifugal fan; and a rear seat duct connected to the outlet and communicating with the rear-seat side space. 11. An automotive air conditioning system comprising: an air conditioning case equipped with an evaporator and a heating heat exchanger in an interior thereof, the heating heat exchanger being disposed downstream of the evaporator, the air conditioning having an air blend area and having defined therein a plurality of openings communicating with a passenger compartment of a vehicle; a primary blower for sending air into the air conditioning case; a secondary blower disposed in a secondary case, the secondary blower having an inlet which is open to the interior of the air conditioning case and adapted to draw in both a flow of air that has not passed through the heating heat exchanger and a flow of heated air that has passed through the heating heat exchanger, the inlet being open to the interior of the air conditioning case through a lower opening in a bottom face of the air conditioning case and an upper opening in an upper face of the secondary case; a bypass passage within the air conditioning case to allow air flow to bypass the heating heat exchanger disposed directly below the heater core, the lower opening being disposed directly below the bypass passage; and a duct connecting to an air outlet of the secondary blower. 12. An automotive air conditioning system as set forth in claim 11, wherein the inlet is open to the interior of the case from an upstream side to a downstream side of the heating heat exchanger. 13. The automotive air conditioning system as set forth in claim 11, wherein the secondary blower is disposed directly below the bypass passage. 14. The automotive air conditioning system as set forth in claim 11, wherein the secondary blower has a rotating shaft having an axis of rotation that extends through the heating heat exchanger. 15. An automotive air conditioning system comprising: a primary blower for sending air into an air conditioning case; an evaporator disposed in the air conditioning case for cooling air that passes therethrough; a heater core disposed downstream of the evaporator for heating air that passes therethrough; a defroster opening defined within the air conditioning case and communicating with a defroster outlet through which air is discharged towards a window glass inside a passenger compartment of a vehicle; a foot opening defined within the air conditioning case and communicating with a foot outlet through which air is discharged towards the lower half bodies of front seat occupants in the passenger compartment; a face opening defined within the air conditioning case and communicating with a face outlet through which air is discharged towards the upper half bodies of the front seat occupants in the passenger compartment; a rear duct communicating with a rear outlet through which air is discharged towards rear seat occupants in the passenger compartment; a lower opening defined within a bottom face of the air conditioning case so that a flow of air that has passed through the evaporator and a flow of air that has passed through the heater core are allowed to flow therein on a downstream side of the evaporator below the heater core; a bypass passage within the air conditioning case to allow air flow to bypass the heater core disposed directly below the heater core, the lower opening being disposed directly below the bypass passage; and a secondary blower disposed in a secondary case which draws in air from the lower opening and sends the drawn air into the rear duct, the secondary case defining an upper opening on an upper face of the secondary case in communication with the lower opening of the air conditioning case.