US4913347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-conditioning system for an air-cooled motor vehicle
Assignee: Dr Ing HCF Porsche AG
•
Filing: 1989-07-14
•
Granted: 1990-04-03
•
Expires: 2009-07-14
Abstract
Abstract So that, in the case of a preferably air-cooled vehicle, the air-conditioning system responds rapidly to changing heated-air temperatures as well as fluctuations in volume, heated air and/or fresh air and/or circulating air or cooled air is together guided to a fan, is swirled together and mixed in this fan and is subsequently, by way of outflow ducts, guided to the vehicle interior. A blow-out temperature sensor arranged behind the fan continuously scans the temperature deviation of the mixed air from the adjusted desired temperature and, as necessary, automatically corrects the position of a temperature mixing flap provided in front of the fan.
Inventors
- 👤 Hermann Burst
- 👤 Walter Pross
- 👤 Horst Petri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:54
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/24; B60H1/247; B60H1/00007
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
176 words
An air-conditioning system for a vehicle having a housing in which an evaporator, a chamber and at least one fan are arranged, the housing having outflow ducts with individually blockable defroster nozzles, center nozzles and leg area nozzles, through which heated air and/or cold air can selectively be introduced into the vehicle interior, the housing being connected with at least one heated-air duct containing an exhaust heat exchanger as well as with inflow ducts for fresh air and circulating air, wherein heated air and/or fresh air and/or circulating air or cooled air is jointly introduced into at least one fan and is swirled together and mixed in this fan and wherein the mixed air is guided subsequently by way of individual outflow ducts to the vehicle interior and wherein a blow-out sensor is arranged behind the fan for scanning the temperature deviation (ΔT) of the mixed air from the adjusted desired temperature and, as a function of the temperature deviation (ΔT), automatically correcting the position of a temperature mixing flap provided in front of the fan.
Claim 2
Dependent Claim
176 words
An air-conditioning system for a vehicle having a housing in which an evaporator, a chamber and at least one fan are arranged, the housing having outflow ducts with individually blockable defroster nozzles, center nozzles and leg area nozzles, through which heated air and/or cold air can selectively be introduced into the vehicle interior, the housing being connected with at least one heated-air duct containing an exhaust heat exchanger as well as with inflow ducts for fresh air and circulating air, wherein heated air and/or fresh air and/or circulating air or cooled air is jointly introduced into at least one fan and is swirled together and mixed in this fan and wherein the mixed air is guided subsequently by way of individual outflow ducts to the vehicle interior and wherein a blow-out sensor is arranged behind the fan for scanning the temperature deviation (ΔT) of the mixed air from the adjusted desired temperature and, as a function of the temperature deviation (ΔT), automatically correcting the position of a temperature mixing flap provided in front of the fan.
Claim 3
Dependent Claim
17 words
An air-conditioning system according to claim 1, wherein said vehicle is an air cooled engine driven vehicle.
Claim 4
Dependent Claim
55 words
An air-conditioning system according to claim 2, wherein the inflow duct for fresh air and the inflow duct for circulating air are guided together in a common cold-air leg in which the evaporator viewed from the flow side, is arranged behind a pressure controlled circulating air flap and in front of a temperature mixing flap.
Claim 5
Dependent Claim
27 words
An air-conditioning system according to claim 3, wherein a fresh-air flap which is controlled by an electric motor, is arranged in the inflow duct for fresh air.
Claim 6
Dependent Claim
28 words
An air-conditioning system according to claim 3, wherein the pressure-controlled circulating-air flap is provided between the inflow duct for fresh air and the inflow duct for circulating air.
Claim 7
Dependent Claim
34 words
An air-conditioning system according to claim 2, wherein the connecting area of the cold-air leg and of the heated-air duct one temperature mixing flap respectively is arranged which is controlled by an adjusting motor.
Claim 8
Dependent Claim
57 words
An air-conditioning system according to claim 2, wherein a differential-pressure-controlled flap is arranged in the heated-air duct behind the exhaust heat exchanger this differential-pressure-controlled flap being actuated as a function of the position of the temperature mixing flap in such a manner that the differential-pressure-controlled flap opens automatically when the temperature mixing flap closes the heated-air duct.
Claim 9
Dependent Claim
37 words
An air-conditioning system according to claim 2, wherein two radial fans 34 are provided for the mixing of the heated air, the fresh air, the circulating air or cooled air in the housing of the air-conditioning system
Claim 10
Dependent Claim
26 words
An air-conditioning system according to claim 8, wherein the radial fans are arranged on the suction side with respect to the evaporator and the heated air.
References Cited (Backward Citations)
US2764354A
Cited
US2833298A
Cited
US3428115A
Cited
US3752223A
Cited
US3934642A
Cited
US4210278A
Cited
US4482009A
Cited
US4718244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |