US4557247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warm-air heating apparatus
Assignee: Mitsubishi Electric Corp
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Filing: 1983-11-30
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Granted: 1985-12-10
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Expires: 2003-11-30
Abstract
Abstract A warm-air heating apparatus has a warm-air blowing port 2 for blowing warm air which is warmed in a heat source 4 provided in a casing after having been sucked through an air intake port 3, and a non-warm-air blowing port 9 provided independent of the warm-air blowing port 2 in which a blower 5 or 11 is placed for each port 2 or 9 to feed warm air to the lower part of a room and to feed non-warm air to the upper part of the room respectively so as to wrap the warm air with the non-warm air whereby temperature distribution in the vertical direction in the room is improved. The warm-air heating apparatus keeps living space warm to create a comfortable heating condition for the room and reduces wasted energy having been consumed to warm the ceiling area of the room in the conventional apparatus thereby improve efficiency of the heating apparatus.
Inventors
- 👤 Masanori Hara
- 👤 Sakuo Sugawara
- 👤 Kisuke Yamazaki
- 👤 Hiroshi Kasagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:27
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24F; F24F7/00; F24F7/007; F24D; F24D5/00; F24D5/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
218 words
A warm-air heating apparatus comprising: a casing, a warm-air blowing port on a front of said casing, said warm-air blowing port and a room-air intake port provided in the casing so as to be in communication with each other, a heat source placed in said casing between the warm-air blowing port and the room-air intake port, a blower in said casing for warm air, said blower being positioned to suck air from the room-air intake port and to blow said air into the heat source and through the warm-air blowing port, said blower and warm-air blowing port being arranged to blow warm air toward a lower part of a room within which said apparatus is positioned, a non-warm air blowing port independent of said warm-air blowing port, and a second blower for non-warm air, said second blower and non-warm air blowing port being arranged above said first blower and in a common casing with said first blower for feeding a stream of non-warm air above said flow of warm air and toward an upper part of said room from said non-warm air blowing port, and means for controlling said blower and second blower such that the second blower for non-warm air is actuated at least temporarily during the time of the actuation of the blower for warm air.
Claim 2
Dependent Claim
218 words
A warm-air heating apparatus comprising: a casing, a warm-air blowing port on a front of said casing, said warm-air blowing port and a room-air intake port provided in the casing so as to be in communication with each other, a heat source placed in said casing between the warm-air blowing port and the room-air intake port, a blower in said casing for warm air, said blower being positioned to suck air from the room-air intake port and to blow said air into the heat source and through the warm-air blowing port, said blower and warm-air blowing port being arranged to blow warm air toward a lower part of a room within which said apparatus is positioned, a non-warm air blowing port independent of said warm-air blowing port, and a second blower for non-warm air, said second blower and non-warm air blowing port being arranged above said first blower and in a common casing with said first blower for feeding a stream of non-warm air above said flow of warm air and toward an upper part of said room from said non-warm air blowing port, and means for controlling said blower and second blower such that the second blower for non-warm air is actuated at least temporarily during the time of the actuation of the blower for warm air.
Claim 3
Dependent Claim
41 words
A warm-air heating apparatus according to claim 1 including means for controlling said blower for warm air depending on room temperature and means not responsive to said means for controlling said blower for warm air for operating said blower for non-warm-air.
Claim 4
Dependent Claim
22 words
A warm-air heating apparatus according to claim 1 including a manually operated switch for operating and stopping said blower for non-warm air.
Claim 5
Dependent Claim
41 words
A warm-air heating apparatus according to claim 1 including means for controlling said blower for warm air depending on room temperature and means for operating said blower for non-warm air in synchronism with the operation of said blower for warm air.
Claim 6
Dependent Claim
21 words
A warm-air heating apparatus according to claim 1 wherein said blower for warm air includes an air flow rate controlling device.
Claim 7
Dependent Claim
22 words
A warm-air heating apparatus according to claim 1 wherein said second blower for non-warm air includes an air flow rate controlling device.
Claim 8
Dependent Claim
26 words
A warm-air heating apparatus according to claim 1 including a room temperature control device to control the operation and stoppage of said blower for warm air.
Claim 9
Dependent Claim
35 words
The apparatus of claim 1 wherein said warm air blowing port includes means for directing air in a downward direction and said non-warm air blowing port includes means for blowing air in an upward direction.
Claim 10
Dependent Claim
237 words
A warm-air heating apparatus comprising: a casing, a warm-air blowing port on a front of said casing, said warm-air blowing port and a room-air intake port provided in the casing so as to be in communication with each other, a heat source placed in said casing between the warm-air blowing port and the room-air intake port, a blower in said casing for warm air, said blower being positioned to suck air from the room-air intake port and to blow said air into the heat source and through the warm-air blowing port, said blower and warm-air blowing port being arranged to blow warm air toward a lower part of a room within which said apparatus is positioned, a non-warm air blowing port independent of said warm-air blowing port; and a second blower for non-warm air, said second blower and non-warm air blowing port being arranged for feeding a stream of non-warm air above said flow of warm air and toward an upper part of said room from said non-warm air blowing port, means for controlling said blower and second blower such that the second blower for non-warm air is actuated at least temporarily during the time of the actuation of the blower for warm air; a room temperature control device to control the operation and stoppage of said blower for warm air including a heat sensitive part of said temperature control device placed near said room-air intake port.
Claim 11
Dependent Claim
237 words
A warm-air heating apparatus comprising: a casing, a warm-air blowing port on a front of said casing, said warm-air blowing port and a room-air intake port provided in the casing so as to be in communication with each other, a heat source placed in said casing between the warm-air blowing port and the room-air intake port, a blower in said casing for warm air, said blower being positioned to suck air from the room-air intake port and to blow said air into the heat source and through the warm-air blowing port, said blower and warm-air blowing port being arranged to blow warm air toward a lower part of a room within which said apparatus is positioned, a non-warm air blowing port independent of said warm-air blowing port; and a second blower for non-warm air, said second blower and non-warm air blowing port being arranged for feeding a stream of non-warm air above said flow of warm air and toward an upper part of said room from said non-warm air blowing port, means for controlling said blower and second blower such that the second blower for non-warm air is actuated at least temporarily during the time of the actuation of the blower for warm air; a room temperature control device to control the operation and stoppage of said blower for warm air including a heat sensitive part of said temperature control device placed near said room-air intake port.
Claim 12
Dependent Claim
65 words
A warm-air heating apparatus according to claim 9 including a second intake port for said second blower, wherein said room-air intake port for said blower for warm air and said room-air intake port for said second blower are respectively formed in a common side surface of said casing and said heat sensitive part of said temperature control device is attached intermediate of said intake ports.
References Cited (Backward Citations)
US2131725A
Cited
US2313676A
Cited
US3143952A
Cited
US4110600A
Cited
US4136606A
Cited
US4134545A
Cited
US4350085A
Cited
US4302663A
Cited
JPS576244A
Cited
FR2495290A1
Cited
JPS57152644A
Cited
US4411252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-09 | 1989-06-10 | 1989-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-09 | 1993-06-10 | 1993-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-09 | 1997-06-10 | 1997-12-10 | $7700.00 | Window Closed / Lapsed |