Pumps – Motor driven – With means to prevent heat transfer between pump and motor
Patent
1984-04-27
1988-01-19
Croyle, Carlton R.
Pumps
Motor driven
With means to prevent heat transfer between pump and motor
F04B 1700, F04B 3500, F04B 3902, F04B 3906
Patent
active
047202483
ABSTRACT:
A thermal barrier which is interposed between the casing of a pump and the housing of a motor has a first section which resembles a spool and includes a first flange sealingly connected to the casing, a second flange sealingly connected to the housing and a hollow cylindrical core spacedly surrounding the pump shaft between the two flanges. The first section serves primarily or exclusively to establish a seal between the pump casing and the motor housing, and the thermal barrier has a second section which takes up stresses and further serves as a heat insulating and/or heat dissipating device. The second section is removably installed in the space between the two flanges of the first section and spacedly surrounds the core. The second section may be constituted by hollow cylindrical walls, one or more stacks of washers or rings, one or more annuli of parallel tubes, bars, rods, ribs or a combination of such elements. The original second section can be replaced with another second section exhibiting different heat-insulating properties and/or a different resistance to mechanical stresses when the conditions under which the pump and motor assembly is used change sufficiently to warrant replacement of the second section.
REFERENCES:
patent: 1873267 (1932-08-01), Bigelow et al.
patent: 2737120 (1956-03-01), Ivanoff et al.
patent: 3947154 (1976-03-01), Klepp et al.
patent: 4239462 (1980-12-01), Dach et al.
Dernedde Robert
Franke Hans-Joachim
Havekost Peter
Klepp Christian
Croyle Carlton R.
Klein, Schanzlin & Becker Aktiengesellschaft
Kontler Peter K.
Stout Donald E.
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