Abstract A fan assembly for a ventilator, and a square ventilator housing comprising a first portion formed with a first passage of circular cross-section and wherein the fan assembly is at least partially received, and at least one second portion rigid with the first portion and formed with a second passage axially aligned and directly communicating with said first passage, said second passage having an open end spaced from the first passage and having throughout its length and at the open end thereof a cross-sectional area greater than the cross-sectional area of the circular first passage and a transverse dimension greater than the diameter of the circular first passage. The electronic components as resistors, condensors, transistors, diodes and the like which are necessary for commutation and/or for electrical control of this fan assembly are placed inside one or more hollow portions in the corners of said square housing.
A fan assembly for a ventilator, comprising, in combination, a square housing having hollow portions in the corners thereof and having a portion formed with a passage of circular crosssection and wherein a fan assembly is at least partially received, said fan assembly having a motor; spoke-like support means for carrying said motor and having longitudinal recesses; a plurality of electrical components including resistors, condensors, transistors and diodes comprising a control circuit for electrically controlling the fan assembly, said electrical components being placed inside at least one of the hollow portions in the corners of said square housing; electrical cables connected to said electrical components and mounted in a recess of said spoke-like supporting means; and plug connector means mounted on said housing and connecting said cables and arranged to be connected to a source of electrical energy.
Claim 2
Dependent Claim
138 words
A fan assembly for a ventilator, comprising, in combination, a square housing having hollow portions in the corners thereof and having a portion formed with a passage of circular crosssection and wherein a fan assembly is at least partially received, said fan assembly having a motor; spoke-like support means for carrying said motor and having longitudinal recesses; a plurality of electrical components including resistors, condensors, transistors and diodes comprising a control circuit for electrically controlling the fan assembly, said electrical components being placed inside at least one of the hollow portions in the corners of said square housing; electrical cables connected to said electrical components and mounted in a recess of said spoke-like supporting means; and plug connector means mounted on said housing and connecting said cables and arranged to be connected to a source of electrical energy.
Claim 3
Dependent Claim
30 words
A fan assembly for a ventilator according to claim 1, said electronic components being mounted in hollow portions having their open ends on the inlet side of the fan assembly.
Claim 4
Dependent Claim
38 words
A fan assembly for a ventilator according to claim 1, said electronic components being mounted with good thermal conductivity on such parts of the housing which have a direct metallic connection to a fan-cooled surface of said housing.