JP2008267651A5 - - Google Patents

Claims (22)

A motor,
Two rotor blades mounted opposite the motor shaft;
It is composed of this rotor blade and two balance plates attached to face the motor shaft at a predetermined angle ,
The balance plate is a prefabricated ventilation fan that is pivotably attached so as to change an angle formed with the rotary blade around the rotation axis and can be overlapped with the rotary blade . The assembly type ventilation fan according to claim 1, wherein a rotating plate is attached to the shaft of the motor, and the rotating blade and the balance plate are attached around the rotating plate. The assembly type ventilation fan according to claim 2, wherein the balance plate is rotatably attached to the rotary plate. 4. The assembly type ventilation fan according to claim 3, wherein the balance plate is provided with a 1/4 arc-shaped hole centered on a rotating fulcrum, and the arc-shaped hole and the rotating fulcrum are fixed to the rotating plate. The assembly type ventilation fan according to any one of claims 3 to 4, wherein the balance plate is provided with a hemming bend on a long side, and is positioned by sandwiching a mounting portion of the rotating plate during the hemming bend. Embossing is provided in the mounting portion of the rotating plate with the balance plate, positioning holes are provided in the mounting portion of the balancing plate with the rotating plate, and when the balance plate is expanded, the embossing is formed in the positioning hole. The assembly type ventilation fan according to any one of claims 3 to 5, wherein the balance plate is positioned by fitting. The assembly type ventilation fan according to claim 2, wherein the balance plate is detachably attached to the rotating plate. A motor, an impeller attached to the shaft of the motor, at least three attachment legs radially attached to the motor housing, and provided at the tip of the attachment leg so as to surround an outer periphery around which the impeller rotates. In the ventilation fan comprised with the outer peripheral frame, the said outer peripheral frame is divided | segmented, The assembly-type ventilation fan characterized by the above-mentioned. The assembly type ventilation fan according to claim 8, wherein the outer peripheral frame is divided into the same number as the number of the mounting legs. The assembly type ventilation fan according to claim 9, wherein the number of mounting legs is four and the outer peripheral frame is divided into four. The assembly type ventilation fan according to any one of claims 8 to 10, wherein the outer peripheral frame is a bell mouth having a circular section in a plane including a rotation axis. The assembly type ventilation fan according to claim 11, wherein a bell mouth connecting member is provided at a tip of the mounting leg, and the bell mouth connecting member is connected to the bell mouth by the bell mouth connecting member. The bell mouth connecting member has a mounting leg mounting hole and two bell mouth mounting holes, the mounting leg is fitted and connected to the mounting leg mounting hole, and the bell mouth is connected to the bell mouth mounting hole. The assembled ventilation fan according to claim 12, wherein the fan is connected by fitting. The bell mouth connecting member is composed of a connecting member A that is directly fitted on a mounting leg and on which the bell mouth is placed, and a connecting member B that sandwiches and fixes the bell mouth between the connecting members A. The assembled ventilation fan according to 12. 15. The assembly type ventilation fan according to claim 14, wherein the connecting member A is provided with a hook for hooking an end of the bell mouth when the bell mouth is placed. A receiving side fixing bracket provided near the tip of the mounting leg, and a connecting member fixing bracket for fixing the connecting member A, bell mouth, and connecting member B by sandwiching the receiving side fixing bracket from both sides are provided. The assembly type ventilation fan according to claim 14 or 15, characterized by the above-mentioned. The assembly-type ventilation fan according to claim 16, wherein the receiving side fixing bracket is provided with a body fixing hole for fixing the ventilation fan body to a building. A ventilating fan comprising a motor and an impeller attached to a shaft of the motor, wherein the motor has at least three pipe-like mounting legs rotatably attached thereto. 19. The mounting legs are four, and two of the four mounting legs are fixed to a motor, and the remaining two are rotatably mounted. Assembled ventilation fan. The assembly type ventilation fan according to claim 18, wherein a bell mouth having an attachment leg connecting member is provided around the ventilation fan, and the attachment leg connecting member is connected to the attachment leg. 21. The bell mouth is divided into the same number as the number of the mounting legs, and the mounting leg connecting member is provided at substantially the center of the split bell mouth, and the adjacent bell mouths are joined to each other. The assembly-type ventilation fan of description. The impeller is attached to two rotor blades facing the motor shaft, and is rotatably attached to the rotary blade at an angle of about 90 °, and is opposed to the motor shaft. 9. The two balance plates attached to each other, wherein the attachment legs are four pipe-like attachment legs and are attached so as to be rotatable at an attachment position with the motor. The assembly type ventilation fan in any one of -17.