초록 ▼

A ventilator having a housing containing a plurality of electric fan units, each of which is mounted in an air channel provided in the housing for directing air through the ventilator. Within the housing, the air channels are formed by cowlings which surround the individual fan unit. The ventilator

A ventilator having a housing containing a plurality of electric fan units, each of which is mounted in an air channel provided in the housing for directing air through the ventilator. Within the housing, the air channels are formed by cowlings which surround the individual fan unit. The ventilator also includes a filter element mounted on the housing to filter air moved through the ventilator channels by the fan units. The ventilator further includes a controller featuring a plurality of switches and an electrical network for electrically connecting the fan units to a source of electrical power such as a wall socket. The switches of the controller are manually operable to permit selective activation of the fan units so that multiple modes of ventilator operation may be selected. In accordance with the multiple modes of operation, air may be filtered and moved through the ventilator either in a first direction or a second direction or in both a first direction and a second direction and circulated.

대표청구항 ▼

A ventilator having multiple modes of operation for selectively, moving air associated with a space in a plurality of direction, the ventilator comprising: structural means for forming a ventilator housing assembly; conduit means located internally of the housing for forming a plurality of separate

A ventilator having multiple modes of operation for selectively, moving air associated with a space in a plurality of direction, the ventilator comprising: structural means for forming a ventilator housing assembly; conduit means located internally of the housing for forming a plurality of separate air channels, the channels having like ends disposed in association with one another; a plurality of electric fan means each of which is disposed in an air channel for selectively moving air therethrough; filter means for filtering air which moves through the channels; control means for electrically controlling the plurality of fan means such that in a first selectable mode of operation air is moved in a first direction through at least some channels and the filter means, and in a second mode of operation air is moved in a second direction through at least some channels and the filter means, and in a third mode of operation air is moved in the first direction through at least some channels and the filter means, and in the second direction through the filter means and at least some channels other than those through which air is moving in the first direction, and thereafter at least a portion of the air moving in the first direction is drawn back through the filter means and the channels in which air is moving in the second direction to at least partially circulate and filter air in the space.