Patent US4487715A successfully refreshed from Google Patents.
Patent US4111000A successfully refreshed from Google Patents.
US4111000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Room air conditioner
Assignee: Hitachi Ltd
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Filing: 1977-01-14
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Granted: 1978-09-05
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Expires: 1997-01-14
Abstract
Abstract A room air conditioner in which the interior of a cabinet is divided into an indoor portion and an outdoor portion by a partition plate having a non-vertical section, and a fan motor is supported in the outdoor portion in such a manner that its rotary shaft is disposed perpendicular to the bottom of the cabinet and penetrates the partition plate at one end thereof to extend into the indoor portion. A first centrifugal fan is mounted at one end of the rotary shaft of the fan motor while a second Silocco fan is mounted at the other end thereof disposed in the outdoor portion. An indoor heat exchanger is disposed in spaced juxtaposed relation to a suction opening formed in the front of the indoor portion so that the air inside a room is drawn by suction through the indoor suction opening and caused to pass through the indoor heat exchanger by means of the first Silocco fan which exhausts air into the room through an indoor exhaust port, and an outdoor heat exchanger is disposed in spaced juxtaposed relation to a suction opening formed in the rear of the outdoor portion so that the air outside the room is drawn by suction through the outdoor suction opening and caused to pass through the outdoor heat exchanger by means of the second centrifugal fan which exhausts air outside the room through an outdour exhaust port. The room air conditioner has a greatly reduced thickness as compared with the same type of air conditioners of the prior art.
Inventors
- 👤 Akio Sakazume
- 👤 Hiroshi Iwata
- 👤 Hiroo Nakamura
- 👤 Hiroyuki Ogawa
- 👤 Susumu Kashiwazaki
- 👤 Saneaki Nakao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:47
CPC Classifications
F; F24; F24F; F24F1/00; F24F1/02; F24F1/028; F24F1/0284
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
504 words
A room air conditioner comprising: a cabinet formed in its front facing the inside of a room with a suction opening and an outlet port for indoor air and at its rear facing the outside of the room with a suction opening and an outlet port for outdoor air; a partition plate dividing the interior of said cabinet into an indoor space and an outdoor space and including at least one surface which is not perpendicular to a bottom of said cabinet; a first heat exchanger mounted in said indoor space of said cabinet and disposed in spaced juxtaposed relation to said suction opening for indoor air; a second heat exchanger mounted in said outdoor space of said cabinet and disposed in spaced juxtaposed relation to said suction opening for outdoor air; a fan motor arranged in said outdoor space of said cabinet and supported by said partition plate in such a manner that its output shaft is disposed perpendicular to the bottom of said cabinet, said output shaft having one end portion penetrating said non-perpendicular surface of said partition plate to extend into said indoor space and the other end portion located within said outdoor space; a first centrifugal fan of the single suction type supported by said one end portion of said output shaft of said fan motor extending into said indoor space; a second centrifugal fan of the double suction type supported by said the other end portion of said output shaft of said fan motor located within said outdoor space; a compressor supported on the bottom of said cabinet in said outdoor space of said cabinet and located in a manner to face an end face of said second centrifugal fan; a first spiral casing mounted in said indoor space of said cabinet in a manner to enclose an outer peripheral portion of said first centrifugal fan and communicate with said outlet port for indoor air, said first spiral casing being operative to lead indoor air tangentially of said first centrifugal fan to be exhausted through said outlet port in said cabinet into the inside of the room after said indoor air is sucked through said indoor air suction opening, cooled by said first heat exchanger, introduced into said indoor space, sucked by said first centrifugal fan discharged from said first centrifugal fan; and a second spiral casing mounted in said outdoor space of said cabinet in a manner to enclose an outer peripheral portion of said second centrifugal fan and communicate with said outlet port for outdoor air, said second spiral casing being operative to lead outdoor air tangentially of said second centrifugal fan to be exhausted through said outlet port in said cabinet to the outside of the room after said outdoor air is sucked through said outdoor air suction opening and said second heat exchanger to cool said second heat exchanger, introduced into said outdoor space to cool said compressor and said fan motor, sucked by said second centrifugal fan, and discharged from said second centrifugal fan.
Claim 2
Dependent Claim
504 words
A room air conditioner comprising: a cabinet formed in its front facing the inside of a room with a suction opening and an outlet port for indoor air and at its rear facing the outside of the room with a suction opening and an outlet port for outdoor air; a partition plate dividing the interior of said cabinet into an indoor space and an outdoor space and including at least one surface which is not perpendicular to a bottom of said cabinet; a first heat exchanger mounted in said indoor space of said cabinet and disposed in spaced juxtaposed relation to said suction opening for indoor air; a second heat exchanger mounted in said outdoor space of said cabinet and disposed in spaced juxtaposed relation to said suction opening for outdoor air; a fan motor arranged in said outdoor space of said cabinet and supported by said partition plate in such a manner that its output shaft is disposed perpendicular to the bottom of said cabinet, said output shaft having one end portion penetrating said non-perpendicular surface of said partition plate to extend into said indoor space and the other end portion located within said outdoor space; a first centrifugal fan of the single suction type supported by said one end portion of said output shaft of said fan motor extending into said indoor space; a second centrifugal fan of the double suction type supported by said the other end portion of said output shaft of said fan motor located within said outdoor space; a compressor supported on the bottom of said cabinet in said outdoor space of said cabinet and located in a manner to face an end face of said second centrifugal fan; a first spiral casing mounted in said indoor space of said cabinet in a manner to enclose an outer peripheral portion of said first centrifugal fan and communicate with said outlet port for indoor air, said first spiral casing being operative to lead indoor air tangentially of said first centrifugal fan to be exhausted through said outlet port in said cabinet into the inside of the room after said indoor air is sucked through said indoor air suction opening, cooled by said first heat exchanger, introduced into said indoor space, sucked by said first centrifugal fan discharged from said first centrifugal fan; and a second spiral casing mounted in said outdoor space of said cabinet in a manner to enclose an outer peripheral portion of said second centrifugal fan and communicate with said outlet port for outdoor air, said second spiral casing being operative to lead outdoor air tangentially of said second centrifugal fan to be exhausted through said outlet port in said cabinet to the outside of the room after said outdoor air is sucked through said outdoor air suction opening and said second heat exchanger to cool said second heat exchanger, introduced into said outdoor space to cool said compressor and said fan motor, sucked by said second centrifugal fan, and discharged from said second centrifugal fan.
Claim 3
Dependent Claim
301 words
A room air conditioner comprising: a cabinet formed with a suction opening and an outlet port for indoor air in an indoor portion thereof and a suction opening and an outlet port for outdoor air in a outdoor portion thereof; a partition member located in the cabinet for dividing the interior of the cabinet into said indoor portion and said outdoor portion including at least one section which is not perpendicular to the bottom of the cabinet; a first heat exchanger mounted in said indoor portion of the cabinet in communication with the suction opening for indoor air; a second heat exchanger mounted in said outdoor portion of the cabinet in communication with the suction opening for outdoor air; a fan motor mounted in the cabinet and located such that its output shaft is disposed perpendicular to the bottom of the cabinet and penetrates the non-perpendicular section of the partition member so that one end portion of the shaft is located within the indoor portion of the cabinet and the other end portion is located within the outdoor portion; a first centrifugal fan supported at the one end portion of the output shaft of the fan motor extending into the indoor portion of the cabinet; a second centrifugal fan supported at the other end portion of the output shaft of the fan motor extending into the outdoor portion of the cabinet; and guide means for dividing the indoor portion and the outdoor portion of the cabinet into a suction side and an exhaust side for the respective centrifugal fans such that said centrifugal fans operate to draw air by suction through the respective suction openings and the respective heat exchangers to the centrifugal fans and thereafter to exhaust the air directly to the respective outlet ports where it is exhausted therefrom.
Claim 4
Dependent Claim
301 words
A room air conditioner comprising: a cabinet formed with a suction opening and an outlet port for indoor air in an indoor portion thereof and a suction opening and an outlet port for outdoor air in a outdoor portion thereof; a partition member located in the cabinet for dividing the interior of the cabinet into said indoor portion and said outdoor portion including at least one section which is not perpendicular to the bottom of the cabinet; a first heat exchanger mounted in said indoor portion of the cabinet in communication with the suction opening for indoor air; a second heat exchanger mounted in said outdoor portion of the cabinet in communication with the suction opening for outdoor air; a fan motor mounted in the cabinet and located such that its output shaft is disposed perpendicular to the bottom of the cabinet and penetrates the non-perpendicular section of the partition member so that one end portion of the shaft is located within the indoor portion of the cabinet and the other end portion is located within the outdoor portion; a first centrifugal fan supported at the one end portion of the output shaft of the fan motor extending into the indoor portion of the cabinet; a second centrifugal fan supported at the other end portion of the output shaft of the fan motor extending into the outdoor portion of the cabinet; and guide means for dividing the indoor portion and the outdoor portion of the cabinet into a suction side and an exhaust side for the respective centrifugal fans such that said centrifugal fans operate to draw air by suction through the respective suction openings and the respective heat exchangers to the centrifugal fans and thereafter to exhaust the air directly to the respective outlet ports where it is exhausted therefrom.
Claim 5
Dependent Claim
113 words
A room air conditioner as claimed in claim 2, wherein said guide means comprises a first spiral casing and a second spiral casing supported in the cabinet for housing therein said first centrifugal fan and said second centrifugal fan disposed in the indoor portion and the outdoor portion respectively, each of said first spiral casing and said second spiral casing being formed with a suction opening corresponding in position to the suction port of each of said first centrifugral fan and said second centrifugal fan and with an exhaust opening extending in the tangential direction of an outer periphery of each said centrifugal fan and reaching the respective outlet port in the cabinet.
Claim 6
Dependent Claim
29 words
A room air conditioner as claimed in claim 3, wherein said first spiral casing and a portion of said second spiral casing are formed integrally with the partition member.
Claim 7
Dependent Claim
39 words
A room air conditioner as claimed in claim 2, wherein the first centrifugal fan disposed in the indoor portion is a single suction fan and the second centrifugal fan disposed in the outdoor portion is a double suction fan.
Claim 8
Dependent Claim
53 words
A room air conditioner as claimed in claim 2, wherein the suction opening and outlet port for indoor air are formed in the front of the indoor portion of the cabinet and the suction opening and outlet port for outdoor air are formed in the rear of the outdoor portion of the cabinet.
Claim 9
Dependent Claim
65 words
A room air conditioner as claimed in claim 2, wherein said fan motor is located with said outdoor portion of the cabinet and a compressor is located in said outdoor portion of the cabinet so as to face an end face of said second centrifugal fan, said fan motor and said compressor being cooled by the outdoor air being sucked to said second centrifugal fan.
References Cited (Backward Citations)
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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) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |