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Air make-up unit

  • US 4,362,922 A
  • Filed: 11/26/1980
  • Issued: 12/07/1982
  • Est. Priority Date: 11/26/1980
  • Status: Expired due to Term
First Claim
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1. An air make-up system comprising:

  • (a) a frame building having a standard exterior wall with vertical studs having standard horizontal distances therebetween, said wall being of standard or greater thickness;

    (b) an elongated metal casing mounted in an opening in said exterior wall between a pair of said studs and having a depth no greater than the thickness of said wall;

    (c) an air intake housing having a tubular forward portion surrounding said casing and extending inwardly in close sliding telescoping relation and having an imperforate shielding wall outside said exterior wall and extending downwardly and outwardly from the upper portions of said housing;

    (d) said housing including a generally horizontal screen member extending inwardly thereacross from the lower portions of said imperforate wall toward said tubular portion of said housing to admit outside air into the interior thereof;

    (e) side, top and bottom wall structure within said casing defining an interior air chamber within said casing and open at the front and rear thereof;

    (f) a rotary blower mounted within said air chamber and having an air-intake in communication with the interior of said housing and having a tangential discharge throat extending horizontally and inwardly therefrom;

    (g) at least one electrical heating element mounted within said blower throat to warm the air driven thereacross by said blower;

    (h) a vertical wall extending longitudinally of said casing and across the interior of said chamber and around said blower throat and sealing the interior of said housing from the interior of said building except for through said blower throat;

    (i) insulation within said vertical wall completely surrounding and insulating the portions of said throat in which said heating element is mounted and insulating the interior of said housing and the outside air from the interior of said building;

    (j) insulation within said side, top and bottom wall structure defining said chamber and completely insulating the outer surfaces of said walls and their surrounding wall structure from the heat generated by said heating element;

    (k) a controllable electric motor mounted within said chamber and connected to said rotary blower in driving relation for driving the same and thereby causing a positive air pressure to be built up within said frame building; and

    (l) means for energizing said heating element as desired.

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