Heat exchanger with flow passages which deform in operation towa

Details Heat exchanger with flow passages which deform in operation towa Heat exchanger with flow passages which deform in operation towa

1989-10-13

1991-07-23

Ford, John K.

Heat exchange

Movable heating or cooling surface

Rotary drum

165 54, 165166, 165 46, 165905, 165906, F28F 308, F24F 314

Patent

active

050335375

ABSTRACT:
There is disclosed an air conditioning unit for location in the wall of a room and which comprises a heat exchanger, an external supply fan operable to blow air into the room through the heat exchanger and an extract fan operable to draw air out of the room through the heat exchanger, in which the heat exchanger comprises a stack of thin flexible plates which are spaced apart from each other so as to define between opposed faces of adjacent plates extract air flow paths and supply air flow paths through the heat exchanger, with the spacing apart of the faces defining the extract air flow paths being greater than the spacing apart of the faces defining the supply air flow paths whereby the depth of the extract air flow paths initially is greater than the depth of the supply air flow paths, but during operation any tendency for the flexible plates to deform under differential pressure action results in the depths of the extract air flow paths and supply air flow paths being substantially equalized, which provides more efficient heat transfer between the air flow paths.

REFERENCES:
patent: 3212572 (1965-10-01), Otto
patent: 3814172 (1974-06-01), Shore
patent: 4006776 (1977-02-01), Pfouts et al.
patent: 4301863 (1981-11-01), Bizzarro
patent: 4303123 (1981-12-01), Skoog
patent: 4858685 (1989-08-01), Szucs et al.

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