Heat exchange units

Details Heat exchange units Heat exchange units

1976-10-08

1979-04-24

Truhe, J. V.

Electric heating

Heating devices

Combined with container, enclosure, or support for material...

34 57A, 219388, 432 58, F27D 1300

Patent

active

041513991

ABSTRACT:
A heat exchange unit for delivery of moulding sand in foundries. The sand is heated or cooled, as desired, by contact in its fluidized state with a heat exchange surface. The delivery temperature may be thermostatically controlled. The unit is capable of intermittent delivery, fluidization ceasing when delivery ceases so that the sand in direct contact with the heat exchange surface insulates the bulk of the sand therefrom. Delivery temperature on recommencement is therefore substantially the same as before cessation. By-pass means may be provided to ensure delivery of sand in the event of malfunction of the unit or during maintenance.

REFERENCES:
patent: 413902 (1889-10-01), Blanchard
patent: 915787 (1909-03-01), Mumford
patent: 2212120 (1940-08-01), Kneale et al.
patent: 2412057 (1946-12-01), Nichols
patent: 2550684 (1951-05-01), Fouquet
patent: 2676668 (1949-06-01), Lindsay
patent: 2988624 (1961-06-01), Iseli-Bossardt et al.
patent: 3029484 (1962-04-01), Kutny
patent: 3186102 (1960-06-01), Brociner et al.

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