Nova Patents
US2932956A

Air-conditioning apparatus of the induction type

Abstract

This record has no abstract on file.

US2932956A, drawing sheet 1
Sheet 1 of 5

Term

Term ended

Expired 19 April 1977, 49.4 years ago.

  1. Priority
  2. Filed
  3. Granted
  4. Expired
  5. Today

2 claims: 2 independent, 0 dependent

  1. 1
    What I claim is:. . 1. In an air conditioning apparatus of the induction type a horizontally elongated air box of a substantially • rectangular cross-sectional shape, a mixing, chamber, over1 60 lying the air box, a longitudinally extending partition in the air box subdividing the interior of the latter into a plenum chamber and a silencing-expansion chamber, the last named chambers being vertically.co-extensive m the box and being arranged in a mutual side-by-side relation65 ship, a valve-controlled primary air passage from the plenum chamber to the silencing-expansion, chamber extending through the said partition lengthwise thereof, a plurality of baffles extending in the silencing-expansion chamber lengthwise of the latter whereby, when seen m 70 cross-sectional view, the silencing-expansion chamber is of a labyrinth shape, and primary air nozzle means connecting the labyrinth with a bottom section of the overlying mixing chamber. . , .__
  2. 2
    In an air conditioning apparatus of the induction horizontally elongated air box of a substantially and thermostat, valve, thereby avoiding the necessity of increasing the depth of the conditioner. A further feature of this invention resides in that the passage between the primary air supply chambei and silencing and expansion chamber is located at the lower portion of the partition between both chambers, said passage extending throughout the length of the apparatus. The passage extending throughout the length of the apparatus allows of air displacement from its inlet into the silencing and expansion chamber up to the nozzle plane j at very low rate of speed free from longitudinal delivery currents. This circumstance as well as the arrangement of the air passage at the lowest portion of the partition between the high and low pressure chambers, hence most remote from the nozzles, permits of arranging in the expansion Chamber an excellent extensive silencing labyrinth, through which air moves evenly without swirling, this insuring a thorough noiselessness and a highly uniform delivery beneath the nozzle plane. Further characteristic features and advantages of this ' invention will be easily understood from the appended description which refers to the accompanying drawings showing a preferred embodiment of the invention given by way of example only. On the drawings:Figure 1 is a perspective view of the apparatus, Figure 2 is a longitudinal section of view of the apparatus on line II—II of Figure 3, Figure 3 is a cross-sectional view of the apparatus on line III—III of Figure 2, Figure 4 is a part cross-sectional view of the apparatus showing a further embodiment of the silencing labyrinth, Figure 5 is a detail view of a plate of the heat exchanger and Figure 6 is a cross-sectional view of the heat exchanger plate. The air-conditioner shown in Figures 1 to 3 comprises a basic body including the supply chamber 1, control valve 2, silencing and expansion chamber 3 extending adjacent the chamber 1 in the lower portion of the apparatus, injection nozzles 4, mixing chamber 5, heat exchanger 6 with automatic or manually operated adjusting valve 7 therefor and air filter 8. The apparatus is completed by a cabinet comprising a frame 9 having a laterally ofi-set top lid 10, a front panel 11, an inlet strainer 12 and an outlet strainer 13. The apparatus shown in Figures 1 to 3 can be encased in either a vertical or horizontal position, the covering including appropriate encasing structures provided with strainers 12 and 13. The primary air flows to the supply' chamber 1 through a hose 39 connected with a central conditioning station, reaches the silencing and expansion chamber 3 through the adjusting valve 2 and passage 14 which, according to this invention, is situated in the lower portion of the chamber and extends throughout the length thereof. The primary air reaches through the silencing labyrinth, established by the baffles IS, the injection nozzles 4 through which it is injected in the mixing chamber 5 in which it induces from the surrounding through the inlet strainer 12, filter 8 and heat exchanger 6 a secondary air stream with which it becomes mixed, the mixture issuing through the outlet strainer 13 to the room to be conditioned. The silencing labyrinth 15 is formed by one horizontal and two vertical baffle sections extending throughout the length of the chamber, the air therein being twice deflected through 90° and twice deflected through 180°. In the modification shown in Figure 4 the silencing labyrinth is formed by three horizontal baffles causing the air to be deflected three times through 180°. According to this invention the chambers 1 and 3 extend lengthwise parallel with each other in a horizontal plane at the lower region of the apparatus. The mixing chamber likewise extends longitudinally in the middle region of the upper portion of the apparatus. The heat 75 type a ho 2,933.956 - 5 rectangular cross-sectional shape, a mixing chamber overlying the air box, a longitudinally extending partition in the air box subdividing the interior of the latter into a plenum chamber and a silencing-expansion chamber, the last named chambers being vertically coextensive in the box and being arranged in a mutual side-by-side relationship, a primary air passage from the plenum chamber to the silencing-expansion chamber extending through the said partition lengthwise of the latter, a valve member for controlling the said primary air passage arranged in the plenum chamber, a plurality of baffles extending in the silencing-expansion chamber lengthwise of the latter whereby, when seen in cross-sectional view, the silencingexpansion chamber is of a labyrinth shape, and primary air nozzle means connecting the labyrinth with a bottom section of the overlying mixing chamber. References Cited in the file of this patent UNITED STATES PATENTS Meyerhans-------------July 13, 1943 FOREIGN PATENTS Great Britain___________ Oct. 16, 1957 2,324,313 784,828
Independent claims2