US3859818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination refrigeration and evaporative cooling air conditioner
Assignee: Individual
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Filing: 1974-04-29
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Granted: 1975-01-14
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Expires: 1994-04-29
Abstract
Abstract The disclosure relates to a compact and unitary assembly of a refrigeration air conditioner and an evaporative cooler air conditioner wherein damper means is arranged with relation to the delivery and return duct assembly of the refrigeration air conditioner so that evaporative cooled air may be delivered from the evaporative cooler, through both the delivery and return ducts of the refrigeration air conditioning system when the refrigeration air conditioner is not energized, and whereby the energization of the refrigeration air conditioner and deenergization of the evaporative cooler causes said damper automatically to be shifted to close off the blower outlet opening of the evaporative cooler so that normal refrigeration air conditioning may be accomplished by the refrigeration air conditioner. The disclosure also relating to several species of the invention which all relate to the use of the aforementioned delivery and return ducts for concurrent delivery of evaporative cooled air therethrough. The system is unitary and adapted to be mounted on the upper side of a building roof so that all of the equipment, including the damper mechanism may be above the roof.
Inventors
- 👤 William H Goettl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:43
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0007; F24F5/0035; Y; Y02; Y02B; Y02B30/00; Y02B30/54
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
178 words
In a combination air conditioner adapted to be installed on top of a building roof; an evaporative cooler; a refrigeration air conditioner adjacent to said evaporative cooler; said refrigeration air conditioner having a refrigerant evaporator; said refrigeration air conditioner having first means for forcing air through said refrigerant evaporator; a refrigerated air delivery duct extending from said refrigerant evaporator to receive refrigerated air therefrom; an air return duct adjacent to said delivery duct; said return duct communicating with said first means; said first means disposed to force air from said return duct and through said refrigerant evaporator and into said delivery duct; a blower in said evaporative cooler; said blower provided with a delivery opening communicating with the interiors of both of said ducts; and a pivoted damper pivotally disposed to swing into an open or closed position relative to said blower delivery opening; said damper alternately pivotal into an open or closed position relative to said delivery ducts to thereby permit said blower to deliver evaporatively cooled air concurrently through said delivery duct and said return duct.
Claim 2
Dependent Claim
178 words
In a combination air conditioner adapted to be installed on top of a building roof; an evaporative cooler; a refrigeration air conditioner adjacent to said evaporative cooler; said refrigeration air conditioner having a refrigerant evaporator; said refrigeration air conditioner having first means for forcing air through said refrigerant evaporator; a refrigerated air delivery duct extending from said refrigerant evaporator to receive refrigerated air therefrom; an air return duct adjacent to said delivery duct; said return duct communicating with said first means; said first means disposed to force air from said return duct and through said refrigerant evaporator and into said delivery duct; a blower in said evaporative cooler; said blower provided with a delivery opening communicating with the interiors of both of said ducts; and a pivoted damper pivotally disposed to swing into an open or closed position relative to said blower delivery opening; said damper alternately pivotal into an open or closed position relative to said delivery ducts to thereby permit said blower to deliver evaporatively cooled air concurrently through said delivery duct and said return duct.
Claim 3
Dependent Claim
51 words
The invention defined in claim 1 wherein said delivery duct is disposed uppermost in said duct assembly; said delivery duct having upper and lower wall portions; said damper pivoted at said upper wall portion of said delivery duct; said damper being pivoted at a respective said of said blower delivery opening.
Claim 4
Dependent Claim
146 words
The invention as defined in claim 2 wherein said delivery duct is provided with opposite side walls; said damper having opposite edges speced from said opposite side walls to allow flow of evaporatively cooled air into said delivery duct toward said evaporator when said damper is in said closed position relative to said delivery duct to thereby permit evaporatively cooled air to flow progressively through said evaporator said first means and said return duct; said damper when in open position relative to said blower delivery opening having its free edge opposite to said pivoted portion thereof; said free edge movable to said lower wall portion of said delivery duct to allow evaporatively cooled air to move from said blower delivery opening and into said delivery duct extending downwardly therebelow whereby evaporatively cooled air may be delivered to a room through both said delivery and return ducts.
Claim 5
Dependent Claim
63 words
The invention as defined in claim 3 wherein said damper is responsive to air flow from said first means when said blower is deenergized whereby said damper is forced closed by air from said first means thereby closing said blower delivery opening and refrigerated air is then delivered from evaporator through said delivery duct and returned to said evaporator through said return duct.
Claim 6
Dependent Claim
68 words
The invention as defined in claim 1 wherein said evaporative cooler and said air conditioner are fixed together in a unitary assembly; support means carrying said unitary assembly; a roof supporting said support means; interior delivery and return duct means below said roof; said interior return and delivery duct means communicating thRough said roof with said first mentioned return and delivery ducts of said elbow shaped duct assembly.
Claim 7
Dependent Claim
67 words
The invention as defined in claim 1 wherein said evaporative cooler is provided with evaporator cooler pads; said cooler having sides, other than said upright sides, in which said evaporator cooler pads are disposed; said evaporator cooler having a sump portion near said bottom thereof said sump portion adapted to contain water therein; said sump portion disposed in partically surrounding relation to said elbow shaped duct assembly.
Claim 8
Dependent Claim
129 words
The invention as defined in claim 1 wherein said evaporative cooler is mounted on top of said refrigeration air conditioner; said blower of said evaporative cooler having a delivery opening communicating with said refrigerant evaporator of said refrigeration air conditioner and adapted to force evaporative cooled air therethrough and into said delivery duct and concurrently adapted to force air through said first means and into said return duct; and a damper pivotally mounted in relation to said delivery opening of said evaporative cooler for swinging into closed position relative to when first means of said refrigeration air conditioner is energized, said damper being freely pivotal to an open position by air forced through said evaporative cooler blower when it is energized and when said refrigeration air conditioner is deenergized.
Claim 9
Dependent Claim
137 words
The invention as defined in claim 1 wherein said evaporative cooler is provided with a side delivery blower opening communicating with openings in sides of said delivery and return ducts; and pivotal damper means coupled together and adapted to swing open and close relative to said openings in the sides of said ducts whereby evaporative cooled air from said blower of said evaporative cooler may be delivered directly into said ducts for concurrent delivery of evaporatively cooled air through both said delivery and return ducts and whereby the damper means is forced closed relative to the delivery opening of the evaporative cooler blower when said first means is energized for forcing air through said refrigerant evaporator to deliver refrigerated air through the delivery duct and allow air to return through said return duct to said first means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |