Patent US4716957A successfully refreshed from Google Patents.
US4716957A
Expired / Lapsed
US
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Duct type multizone air conditioning system
Assignee: Mitsubishi Electric Corp
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Filing: 1986-03-26
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Granted: 1988-01-05
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Expires: 2006-03-26
Abstract
Abstract An air duct type multizone air conditioning system having air dampers and corresponding thermostats in respective zones under the control of a main controller. The main controller can override desired temperatures selected by the corresponding thermostats in any of the zones and automatically detects the number of the number of zones, the presence of an auxiliary heater, and a heat pump, and the presence of an air damper and corresponding thermostat properly located in the same zone. The main controller also receives information regarding the operating cost of the heat pump and the auxiliary heater to ensure their cost-effective use.
Inventors
- 👤 Peter Thompson
- 👤 Nobuo Otsuka
- 👤 Kisuke Yamazaki
- 👤 Hideo Igarashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:35
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F11/00; F24F11/30; F24F11/46; F24F11/50; F24F11/52; F24F11/523; F24F11/61; F24F11/62; F24F11/63; F24F11/64; F24F11/65; F24F11/67; F24F11/70; F24F11/72; F24F11/74; F24F3/001; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1917; G05D23/1927; G05D23/193; G05D23/1932; G05D23/1934; F24F2110/00; F24F2110/10; F24F2110/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
285 words
A duct type multizone air conditioning system having a cooling and heating heat pump, a heating gas burner, a supply air duct for supplying air to a plurality of zones to be air conditioned, and a blower fan for forcibly circulating conditioned air through the duct to the plurality of zones to be air conditioned comprising: a plurality of temperature detecting means, respectively disposed in corresponding ones of the zones to be air conditioned, each temperature detecting means detecting a present temperature of the corresponding one of the zones; a plurality of air damper means, respectively disposed in corresponding ones of the zones, for controlling the supply air to the corresponding zones to be air conditioned; a plurality of zone temperature setting means, respectively disposed in corresponding ones of the zones, each temperature setting means setting a present set temperature for the corresponding one of the zones; means for controlling the opening and closing of the air damper means so that the present temperatures detected by each of said temperature detecting means become said present set temperatures set by said zone temperature setting means; means for automatically determining the number of the zones to be air conditioned; mean sfor automatically determining the presence of an air damper means and corresponding temperature detecting means in each zone; means for automatically determining the presence of a heating gas burner and the presence of a heat pump within the air conditioning system; means for automatically determining the presence of a damper means and corresponding temperature setting means in the same zone; and means for receiving heat pump cost and heating gas burner cost information so as to ensure cost-effective use of the heat pump and heating gas burner.
Claim 2
Dependent Claim
285 words
A duct type multizone air conditioning system having a cooling and heating heat pump, a heating gas burner, a supply air duct for supplying air to a plurality of zones to be air conditioned, and a blower fan for forcibly circulating conditioned air through the duct to the plurality of zones to be air conditioned comprising: a plurality of temperature detecting means, respectively disposed in corresponding ones of the zones to be air conditioned, each temperature detecting means detecting a present temperature of the corresponding one of the zones; a plurality of air damper means, respectively disposed in corresponding ones of the zones, for controlling the supply air to the corresponding zones to be air conditioned; a plurality of zone temperature setting means, respectively disposed in corresponding ones of the zones, each temperature setting means setting a present set temperature for the corresponding one of the zones; means for controlling the opening and closing of the air damper means so that the present temperatures detected by each of said temperature detecting means become said present set temperatures set by said zone temperature setting means; means for automatically determining the number of the zones to be air conditioned; mean sfor automatically determining the presence of an air damper means and corresponding temperature detecting means in each zone; means for automatically determining the presence of a heating gas burner and the presence of a heat pump within the air conditioning system; means for automatically determining the presence of a damper means and corresponding temperature setting means in the same zone; and means for receiving heat pump cost and heating gas burner cost information so as to ensure cost-effective use of the heat pump and heating gas burner.
Claim 3
Dependent Claim
158 words
A duct type multizone air conditioning system according to claim 1 wherein said means for controlling the opening and closing of the air damper means comprises: main temperature setting means for simultaneously setting a present set temperature for a set of said plurality of zones; memory means receiving the present set temperatures from said main temperature setting means and from said plurality of zone temperature setting means, for providing signals corresponding to the present set temperature set by said main temperature setting means and signals corresponding to the present set temperature set by said plurality of zone temperature setting means, and for storing the present set temperatures from said main temperature setting means and the present set temperatures from said plurality of zone temperature setting means; and temperature determining means for comparing the stored present set temperatures with the received present set temperatures and when incoincidence occurs, altering a stored present set temperature in accordance with the incoincidence.
Claim 4
Dependent Claim
39 words
A duct type multizone air conditioning system according to claim 2 wherein said main temperature setting means and said zone temperature setting means each respectively comprise display means for displaying the corresponding present set temperature and the present temperature.
Claim 5
Dependent Claim
91 words
A duct type multizone air conditioning system according to Claim 1 wherein said means for controlling the opening and closing of the air damper means comprises: timer means for providing time signals corresponding to sequential times; reset means for manually entering a present set temperature and for setting an associated predetermined time corresponding to a time signal received from said timer means; means for storing said manually entered present set temperature and said associated predetermined time; and display means for displaying said predetermined time and said manually entered present set temperature.
Claim 6
Dependent Claim
42 words
A duct type multizone air conditioning system according to Claim 4 wherein said means for controlling the opening and closing of the air damper means further comprises: check means for checking the manually entered present set temperature and the associated predetermined time.
Claim 7
Dependent Claim
57 words
A duct type multizone air conditioning system according to claim 1 further comprising: analyzer means, operatively connectable to said means for controlling the opening and closing of the air damper means, for providing initializing information to the opening and closing means necessary for air conditioning control, including said heat pump cost and heating gas burner cost information.
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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) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |