초록 ▼

A filter apparatus for an aquarium combines mechanical, chemical, and biological filters in a structure which can be hidden from view under the gravel at the bottom of the tank. A generally horizontally extending upper wall and attached supporting sides cooperate with the bottom of the tank to defin

A filter apparatus for an aquarium combines mechanical, chemical, and biological filters in a structure which can be hidden from view under the gravel at the bottom of the tank. A generally horizontally extending upper wall and attached supporting sides cooperate with the bottom of the tank to define a dispersion chamber. A filter box is supported above the upper wall and defines a filter cavity for retaining mechanical and chemical filter material with an inlet in fluid communication with a portion of the tank above the upper wall and an outlet in fluid communication with the dispersion chamber. The upper wall has a plurality of apertures formed therein for substantially uniform dispersion of water from the dispersion chamber. A pump means circulates water from the tank through the filter material in the filter box, through the dispersion chamber and back to the tank through the gravel. The flow of clean water out of the apertures in the upper wall and up through the gravel achieves biological filtration. The filter apparatus also includes a selectively adjustable bypass path for regulating the flow of water through the dispersion chamber.

대표청구항 ▼

In an aquarium tank having a bottom and side walls for retaining a body of liquid, a fluid filter apparatus comprising: means for supporting gravel in the tank including a horizontal perforated plate extending between the side walls of the tank and spaced above the bottom thereof defining a fluid di

In an aquarium tank having a bottom and side walls for retaining a body of liquid, a fluid filter apparatus comprising: means for supporting gravel in the tank including a horizontal perforated plate extending between the side walls of the tank and spaced above the bottom thereof defining a fluid dispersion chamber; a receptacle for containing filter material located on an upper side of said horizontal perforated plate and constructed and arranged to permit fluid flow through a plurality of apertures in said perforated plate spaced from side walls of said receptacle, said receptacle including a perforated cover plate and a perforated bottom plate spaced between said side walls of said receptacle; and pump means including impeller means and magnetic means rotatably supported in said dispersion chamber and motor means located beneath the bottom of the tank for operatively rotating by magnetic coupling said impeller means whereby fluid from the tank is drawn through said filter material receptacle into said dispersion chamber and is discharged back into the tank through said plurality of apertures in said horizontal perforated plate spaced from said side walls of said receptacle.