US3805541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window-mounted air conditioning apparatus
Assignee: Hitachi Ltd
•
Filing: 1972-10-04
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Granted: 1974-04-23
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Expires: 1992-10-04
Abstract
Abstract A window-mounted air conditioning apparatus in which an enclosed chamber is formed between an inside chamber and an outside chamber within an inner chamber of a casing by use of two partitions, which enclosed chamber being sufficient to mount a compressor and a fan motor therein, thus making it possible to prevent a transmission of an unpleasant sound made by the compressor and the motor into the room to be air-conditioned or into next houses.
Inventors
- 👤 K Fujie
- 👤 A Sakazume
- 👤 Y Sekine
- 👤 H Uzuhashi
- 👤 H Ogawa
- 👤 T Hosoda
- 👤 K Ogata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:52
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/4206; F04D29/4226; F04D29/4246; F04D29/44; F04D29/441; F24; F24F; F24F1/00; F24F1/02; F24F1/022; F24F1/027
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
218 words
A window-mounted air conditioning apparatus comprising: a housing including first and second partitions for dividing said housing into an inner evaporator compartment having an evaporator heat exchanger and a first fan mounted therein, and said inner compartment further including first air inlet openings and first air discharge openings to provide an air duct with said first fan for circulating air through said evaporator heat exchanger; an intermediate enclosed compartment having a compressor mounted therein and a vent opening for introducing air into said enclosed compartment to cool said compressor; and an outer condenser compartment having a condenser heat exchanger and second centrifugal fan of the both suction-type mounted therein, and said outer compartment further including second air inlet openings and second air discharge openings, said second fan having a first and second portion and mounted in said outer compartment to provide a heat exchanger air duct with said second portion of said fan for forcing air from said second air inlet openings through said condenser heat exchanger to said second air discharge openings and to provide a separate ventilating air duct with said first portion of said fan for forcing air introduced into said enclosed chamber from said enclosed chamber through a suction opening in said second partition to said second air discharge openings, thereby cooling said compressor.
Claim 2
Dependent Claim
218 words
A window-mounted air conditioning apparatus comprising: a housing including first and second partitions for dividing said housing into an inner evaporator compartment having an evaporator heat exchanger and a first fan mounted therein, and said inner compartment further including first air inlet openings and first air discharge openings to provide an air duct with said first fan for circulating air through said evaporator heat exchanger; an intermediate enclosed compartment having a compressor mounted therein and a vent opening for introducing air into said enclosed compartment to cool said compressor; and an outer condenser compartment having a condenser heat exchanger and second centrifugal fan of the both suction-type mounted therein, and said outer compartment further including second air inlet openings and second air discharge openings, said second fan having a first and second portion and mounted in said outer compartment to provide a heat exchanger air duct with said second portion of said fan for forcing air from said second air inlet openings through said condenser heat exchanger to said second air discharge openings and to provide a separate ventilating air duct with said first portion of said fan for forcing air introduced into said enclosed chamber from said enclosed chamber through a suction opening in said second partition to said second air discharge openings, thereby cooling said compressor.
Claim 3
Dependent Claim
35 words
A window-mounted air conditioning apparatus according to claim 1, wherein a spiral casing is mounted around said both suction-type centrifugal fan for providing spiral members formed with discharge openings facing said second air discharge openings.
Claim 4
Dependent Claim
36 words
A window-mounted air conditioning apparatus according to claim 1, wherein a fan motor is mounted in said enclosed chamber for directly connecting with said first and second fans through said first and second partition walls, respectively.
References Cited (Backward Citations)
US2357362A
Cited
US2551284A
Cited
US2495002A
Cited
US2730873A
Cited
US2751760A
Cited
US3200608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-22 | 1977-10-22 | 1978-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-22 | 1981-10-22 | 1982-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-22 | 1985-10-22 | 1986-04-23 | $7700.00 | Window Closed / Lapsed |