US4997030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Central air conditioning system having remote controller in a plurality of rooms for starting or stopping air conditioning apparatus
Assignee: Toshiba Corp
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Filing: 1989-12-05
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Granted: 1991-03-05
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Expires: 2009-12-05
Abstract
Abstract A central air conditioning system includes an air conditioning apparatus having a system controller and a variable air volume controller having a damper which controls the amount of conditioned air fed from the air conditioning apparatus into each room to be air-conditioned. Each room is provided with a room remote controller for controlling the operation of the air volume controller. The room remote controller outputs a start/stop command signal to control the operation of both the air conditioning apparatus and the air volume controller. The temperature of conditioned air fed from the air conditioning apparatus is maintained at a prescribed value determined on the basis of the desired room temperature in each room.
Inventors
- 👤 Yukifumi Goto
- 👤 Yoshihiro Chuma
- 👤 Hidetoshi Narikiyo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:20
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1927; G05D23/193; G05D23/1932; G05D23/1934; F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/76; F24F11/50; F24F11/56
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
172 words
A central air conditioning system wherein conditioned air is supplied to a plurality of rooms to be air-conditioned through a common duct, the system comprising: air conditioning means for generating conditioned air and forcibly supplying the conditioned air to the common duct; variable air volume control means, corresponding to each room, for controlling a flow of the conditioned air from the common duct into corresponding room; a room remote controller, provided in each room, including a start/stop function wherein a start/stop command signal is output therefrom to control the operation of both the air conditioning means and variable air volume control means, a desired room temperature set function wherein a desired room temperature is set therethrough, a temperature detection function wherein the actual room temperature of the corresponding room is detected, and a mode selection function wherein one of the heating and cooling modes is selected; and a system remote controller including an ON/OFF function wherein an ON/OFF command signal is output therefrom to control the operation of the air conditioning means.
Claim 2
Dependent Claim
172 words
A central air conditioning system wherein conditioned air is supplied to a plurality of rooms to be air-conditioned through a common duct, the system comprising: air conditioning means for generating conditioned air and forcibly supplying the conditioned air to the common duct; variable air volume control means, corresponding to each room, for controlling a flow of the conditioned air from the common duct into corresponding room; a room remote controller, provided in each room, including a start/stop function wherein a start/stop command signal is output therefrom to control the operation of both the air conditioning means and variable air volume control means, a desired room temperature set function wherein a desired room temperature is set therethrough, a temperature detection function wherein the actual room temperature of the corresponding room is detected, and a mode selection function wherein one of the heating and cooling modes is selected; and a system remote controller including an ON/OFF function wherein an ON/OFF command signal is output therefrom to control the operation of the air conditioning means.
Claim 3
Dependent Claim
26 words
A system according to claim 1, wherein the system remote controller includes a mode selection function wherein one of the heating and cooling modes is selected.
Claim 4
Dependent Claim
34 words
A system according to claim 2, wherein the system remote controller also includes a target temperature set function wherein a target temperature of the conditioned air from the air conditioning means is set therethrough.
Claim 5
Dependent Claim
182 words
A central air conditioning system wherein conditioned air is supplied to a plurality of rooms to be air-conditioned through a common duct, the system comprising: air conditioning means, having a housing, for generating conditioned air and forcibly supplying the conditioned air to the common duct; variable air volume control means, corresponding to each room, for controlling a flow of the conditioned air from the common duct into corresponding room; a room remote controller, provided in each room, including a start/stop function wherein start/stop command signal is output therefrom to control the operation of both the air conditioning means and variable air volume control means, a desired room temperature set function wherein a desired room temperature is set therethrough, a temperature detection function wherein the actual room temperature of the corresponding room is detected, and a mode selection function wherein one of the heating and cooling modes is selected; and a system controller attached to the housing of the air conditioning means, including an ON/OFF function wherein an ON/OFF command signal is output therefrom to control the operation of the air conditioning means.
Claim 6
Dependent Claim
182 words
A central air conditioning system wherein conditioned air is supplied to a plurality of rooms to be air-conditioned through a common duct, the system comprising: air conditioning means, having a housing, for generating conditioned air and forcibly supplying the conditioned air to the common duct; variable air volume control means, corresponding to each room, for controlling a flow of the conditioned air from the common duct into corresponding room; a room remote controller, provided in each room, including a start/stop function wherein start/stop command signal is output therefrom to control the operation of both the air conditioning means and variable air volume control means, a desired room temperature set function wherein a desired room temperature is set therethrough, a temperature detection function wherein the actual room temperature of the corresponding room is detected, and a mode selection function wherein one of the heating and cooling modes is selected; and a system controller attached to the housing of the air conditioning means, including an ON/OFF function wherein an ON/OFF command signal is output therefrom to control the operation of the air conditioning means.
Claim 7
Dependent Claim
50 words
A system according to claim 4, wherein the system controller includes a priority mode operation function wherein the air conditioning means is operated in one of the cooling and heating modes in accordance with a predetermined priority when both heating and cooling modes are selected by different room remote controllers.
Claim 8
Dependent Claim
25 words
A system according to claim 4, wherein the system controller includes a mode selection function wherein one of the heating and cooling modes is selected.
Claim 9
Dependent Claim
33 words
A system according to claim 6, wherein the system controller also includes a target temperature set function wherein a target temperature of the conditioned air from the air conditioning means is set therethrough.
Claim 10
Dependent Claim
44 words
A system according to claim 4, wherein the system controller includes a target temperature determination function wherein a target temperature of the conditioned air from the air conditioning means is determined based on the desired room temperature in each room to be air conditioned.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |