US6272880B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioner
Assignee: Daikin Industries Ltd
•
Filing: 1999-04-22
•
Granted: 2001-08-14
•
Expires: 2019-04-22
Abstract
Abstract A heat-source-side space and two heat-use-side spaces are formed in a casing. A heat-source-side heat exchanger is contained in the heat-source-side space, and heat-use-side heat exchangers are individually contained in the heat-use-side spaces. The casing is formed with a plurality of suction ports for room air and a plurality of delivery ports for conditioned air. The suction ports and the delivery ports are individually connected to ducts communicating with rooms. The heat-source-side heat exchanger and the plurality of heat-use-side heat exchangers constitute refrigerant circuitry.
Inventors
- 👤 Hiroshi Miki
- 👤 Yasushi Fujiwara
- 👤 Satoru Yoshimitsu
- 👤 Akihito Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:01
CPC Classifications
F; F25; F25B; F25B5/00; F25B5/02; F24; F24F; F24F3/00; F24F3/044; F24F3/048; F24F3/052; F24F3/0527; F25B41/00; F25B41/20; F25B41/24; F25B6/00
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
235 words
An air conditioner comprising: a casing installed on a rooftop, which comprises a heat-use-side casing and a heat-source-side casing which are formed continuously with each other, the heat-use-side casing comprising a plurality of heat-use-side spaces and the heat-source-side casing comprising a heat-source-side space; a heat-source-side heat exchanger contained in the heat-source-side space; a plurality of heat-use-side heat exchangers respectively contained in the plurality of heat-use-side spaces; a plurality of suction ports for air open to the respective heat-use-side spaces and a plurality of delivery ports for conditioned air open to the respective heat-use-side spaces; a duct which is to communication with a room, the duct being connected with at least one of the suction ports and the delivery ports; a plurality of heat-use-side fans provided in the plurality of heat-use-side spaces, respectively, the plurality of heat-use-side fans operating in association with the plurality of heat-use-side heat exchangers, respectively; and a refrigerant circuitry formed by connecting the plurality of heat-use-side heat exchangers and the heat-source-side heat exchanger, the refrigerant circuitry comprising a plurality of expansion mechanisms respectively located on liquid lines between branch parts of refrigerant liens and the plurality of heat-use-side heat exchangers, respectively, wherein each of the expansion mechanisms is adjustable in opening in accordance with each heat load, and the plurality of heat-use-side heat exchangers generate conditioned airs different from one another, which are supplied to a plurality of air conditioning zones, respectively.
Claim 2
Dependent Claim
235 words
An air conditioner comprising: a casing installed on a rooftop, which comprises a heat-use-side casing and a heat-source-side casing which are formed continuously with each other, the heat-use-side casing comprising a plurality of heat-use-side spaces and the heat-source-side casing comprising a heat-source-side space; a heat-source-side heat exchanger contained in the heat-source-side space; a plurality of heat-use-side heat exchangers respectively contained in the plurality of heat-use-side spaces; a plurality of suction ports for air open to the respective heat-use-side spaces and a plurality of delivery ports for conditioned air open to the respective heat-use-side spaces; a duct which is to communication with a room, the duct being connected with at least one of the suction ports and the delivery ports; a plurality of heat-use-side fans provided in the plurality of heat-use-side spaces, respectively, the plurality of heat-use-side fans operating in association with the plurality of heat-use-side heat exchangers, respectively; and a refrigerant circuitry formed by connecting the plurality of heat-use-side heat exchangers and the heat-source-side heat exchanger, the refrigerant circuitry comprising a plurality of expansion mechanisms respectively located on liquid lines between branch parts of refrigerant liens and the plurality of heat-use-side heat exchangers, respectively, wherein each of the expansion mechanisms is adjustable in opening in accordance with each heat load, and the plurality of heat-use-side heat exchangers generate conditioned airs different from one another, which are supplied to a plurality of air conditioning zones, respectively.
Claim 3
Dependent Claim
211 words
An air conditioner comprising: a casing installed on a rooftop, which comprises a heat-source-side space and a plurality of heat-use-side spaces; a heat-source-side heat exchanger contained in the heat-source-side space; a plurality of heat-use-side heat exchangers respectively contained in the plurality of heat-use-side spaces; a plurality of suction ports for air open to the respective heat-use-side spaces and an plurality of delivery ports for conditioned air open to the respective heat-use-side spaces; a duct which is to communicate with a room, the duct being connected with at least one of the suction ports and the delivery ports; a plurality of heat-use-side fans provided in the plurality of heat-use-side space, respectively, the plurality of heat-use-side fans operating in association with the plurality of heat-use-side exchange respectively; and a refrigerant circuitry formed by connecting the plurality of heat-use-side heat exchangers, and the heat-source-side heat exchanger, the refrigerant circuitry comprising a plurality expansion mechanisms respectively located on liquid lines between branch parts of refrigerant pipes and the plurality of heat-use-side heat exchangers, respectively, wherein each of the expansion mechanisms is adjustable in opening in accordance with each heat load, and the plurality of heat-use-side heat exchangers generate conditioned airs different from one another, which are supplied to a plurality of air conditioning zones, respectively.
Claim 4
Dependent Claim
211 words
An air conditioner comprising: a casing installed on a rooftop, which comprises a heat-source-side space and a plurality of heat-use-side spaces; a heat-source-side heat exchanger contained in the heat-source-side space; a plurality of heat-use-side heat exchangers respectively contained in the plurality of heat-use-side spaces; a plurality of suction ports for air open to the respective heat-use-side spaces and an plurality of delivery ports for conditioned air open to the respective heat-use-side spaces; a duct which is to communicate with a room, the duct being connected with at least one of the suction ports and the delivery ports; a plurality of heat-use-side fans provided in the plurality of heat-use-side space, respectively, the plurality of heat-use-side fans operating in association with the plurality of heat-use-side exchange respectively; and a refrigerant circuitry formed by connecting the plurality of heat-use-side heat exchangers, and the heat-source-side heat exchanger, the refrigerant circuitry comprising a plurality expansion mechanisms respectively located on liquid lines between branch parts of refrigerant pipes and the plurality of heat-use-side heat exchangers, respectively, wherein each of the expansion mechanisms is adjustable in opening in accordance with each heat load, and the plurality of heat-use-side heat exchangers generate conditioned airs different from one another, which are supplied to a plurality of air conditioning zones, respectively.
Claim 5
Dependent Claim
28 words
The air conditioner of claim 1 , wherein an open-air intake for taking open air in at least one of the heat-use-side spaces is formed in the casing.
Claim 6
Dependent Claim
31 words
The air conditioner of claim 1 , wherein heat-recycling heat exchangers for applying heat to dehumidified air are contained individually in the heat-use-side spaces and are connected to the refrigerant circuitry.
Claim 7
Dependent Claim
23 words
The air conditioner of claim 1 , wherein the refrigerant circuitry is provided with connection ports for connecting an additional heat exchanger thereto.
Claim 8
Dependent Claim
39 words
The air conditioner of claim 1 , wherein heat-use-side units each containing one of the heat-use-side heat exchangers are contained in the heat-use-side spaces, respectively, and are formed in the same arrangements of components in the respective heat-use-side spaces.
Claim 9
Dependent Claim
55 words
The air conditioner of claim 1 , wherein heat-use-side units each containing one of the heat-use-side heat exchangers are contained in the heat-use-side spaces, respectively, and the heat-use-side unit in the heat-use-side space of one type and the heat-use-side unit in the heat-use-side space of the other type are formed in symmetric arrangements of components.
Claim 10
Dependent Claim
31 words
The air conditioner of claim 1 , wherein at least either of the suction ports and the delivery ports are formed at the same positions with respect to the heat-use-side spaces.
Claim 11
Dependent Claim
49 words
The air conditioner of claim 1 , wherein at least either of the suction ports and the delivery ports are formed so that the port open to the heat-use-side space of one type and the port open to the heat-use-side space of the other type are at symmetric positions.
Claim 12
Dependent Claim
38 words
The air conditioner of claim 3 , wherein ports of at least one type out of the suction ports, the delivery ports and the open-air intakes are formed at the same positions with respect to the heat-use-side spaces.
Claim 13
Dependent Claim
56 words
The air conditioner of claim 3 , wherein ports of at least one type out of the suction ports, the delivery ports and the open-air intakes are formed so that the port open to the heat-use-side space of one type and the port open to the heat-use-side space of the other type are at symmetric positions.
Claim 14
Dependent Claim
28 words
The air conditioner of claim 2 , wherein an open-air intake for taking open air in at least one of the heat-use-side spaces is formed in the casing.
Claim 15
Dependent Claim
31 words
The air conditioner of claim 2 , wherein heat-recycling heat exchangers for applying heat to dehumidified air are contained individually in the heat-use-side spaces and are connected to the refrigerant circuitry.
Claim 16
Dependent Claim
23 words
The air conditioner of claim 2 , wherein the refrigerant circuitry is provided with connection ports for connecting an additional heat exchanger thereto.
Claim 17
Dependent Claim
39 words
The air conditioner of claim 2 , wherein heat-use-side units each containing one of the heat-use-side heat exchangers are contained in the heat-use-side spaces, respectively, and are formed in the same arrangements of components in the respective heat-use-side spaces.
Claim 18
Dependent Claim
55 words
The air conditioner of claim 2 , wherein heat-use-side units each containing one of the heat-use-side heat exchangers are contained in the heat-use-side spaces, respectively, and the heat-use-side unit in the heat-use-side space of one type and the heat-use-side unit in the heat-use-side space of the other type are formed in symmetric arrangements of components.
Claim 19
Dependent Claim
31 words
The air conditioner of claim 2 , wherein at least either of the suction ports and the delivery ports are formed at the same positions with respect to the heat-use-side spaces.
Claim 20
Dependent Claim
49 words
The air conditioner of claim 2 , wherein at least either of the suction ports and the delivery ports are formed so that the port open to the heat-use-side space of one type and the port open to the heat-use-side space of the other type are at symmetric positions.
Claim 21
Dependent Claim
38 words
The air conditioner of claim 12 , wherein ports of at least one type out of the suction ports, the delivery ports and the open-air intakes are formed at the same positions with respect to the heat-use-side spaces.
Claim 22
Dependent Claim
56 words
The air conditioner of claim 12 , wherein ports of at least one type out of the suction ports, the delivery ports and the open-air intakes are formed so that the port open to the heat-use-side space of one type and the port open to the heat-use-side space of the other type are at symmetric positions.
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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) | 2004-08-13 | 2005-02-12 | 2005-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-08-13 | 2009-02-12 | 2009-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-08-13 | 2013-02-12 | 2013-08-14 | $7700.00 | Window Closed / Lapsed |