Non-precise heat control operation periodic positive & reverse c

Details Non-precise heat control operation periodic positive & reverse c Non-precise heat control operation periodic positive & reverse c

1988-03-14

1989-07-25

Smith, Jr., David

Electricity: motive power systems

Automatic and/or with time-delay means

Responsive to thermal conditions

318739, H02P 320

Patent

active

048517470

ABSTRACT:
A manually controlled positive and reverse circulating fan is used in room, usually, when in summer to blow air is downward so that the cool air at the lower level can be spread into every corner of the room. In winter, the fan is operated reversely and the warmer air at higher level can be spread evenly down in the room, thus the room temperature can be kept even and the energy can be saved. However, because of the limitation of the room space shape, there are still spaces that the air flow can not reach. This design, with a periodic positive/reverse switch operation, controls the ceiling fan to operate positively or reversely in periodicity so that it may further improve, the function of stirring the air evenly. This design can be used also ventilators/for air intake/exist as well.

REFERENCES:
patent: 1820764 (1931-08-01), Abt
patent: 3096468 (1963-07-01), Kinsworthy
patent: 3601675 (1971-08-01), Radtke
patent: 3993940 (1976-11-01), Volk, Jr.
patent: 4689533 (1987-08-01), Yang

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