Room air conditioner

Details

Inventors: Sakazume, Akio; Iwata, Hiroshi; Nakamura, Hiroo; Ogawa, Hiroyuki; Kashiwazaki, Susumu; Nakao, Saneaki;
Assignee: Hitachi, Ltd. (JP)
Primary Examiner: King; Lloyd L.
Assistant Examiner:
Attorney, Agent or Firm: Craig & Antonelli

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.

DETAILED DESCRIPTION An object of this invention is to provide a room air conditioner which enables its thickness to be greatly reduced.
Another object of the invention is to provide a room air conditioner which greatly relaxes limitations placed on the position in which the room air conditioner is installed.
Still another object of the invention is to provide a room air conditioner wherein streams of air of high speed delivered by the centrifugal fans located in both the indoor and outdoor portions of the cabinet can flow without being forced to change their direction of flow, whereby a reduction in resistance to the flow of air can lead to a lessening of noise produced by the streams of air and to a larger volume of air delivered than by the fans of a conventional room air conditioner.
The aforementioned objects of the invention are accomplished by mounting the fan motor on the partition plate, which divides the interior of the cabinet into an indoor portion and an outdoor portion, in such a manner that the rotary shaft of the fan motor is disposed perpendicular to the base of the cabinet, and by arranging the indoor and outdoor heat exchangers, fan motor and fans in such a manner that these parts are arranged in a vertical direction, not in a horizontal direction, in the cabinet.
More specifically, a non-vertical section is provided in the partition plate; the fan motor is secured to the partition plate such that it is disposed in the outdoor portion, and one end portion of the rotary shaft of the fan motor penetrates the non-vertical section of the partition plate to extend into the indoor portion; a centrifugal fan is supported on either end of the rotary shaft of the fan motor; each centrifugal fan is provided with a spiral casing which has an outlet port opening in the front surface or rear surface of the cabinet; and the rotation of the centrifugal fans causes streams of air to pass through the indoor and outdoor heat exchangers and to be exhausted through the outlet ports of the spiral casings

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