JPH0442664Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a ceiling-mounted ventilation fan that ventilates two or more rooms at the same time, and can also be used to attach a lighting device to the ceiling mounting surface. Relating to an adjustment device.

BACKGROUND ART A duct ventilation fan that ventilates two or more rooms at the same time needs to adjust the proportion of ventilation taken in from each room depending on the size of the room and the length of the connecting duct.

Therefore, there has been a demand for such a duct ventilation fan to have a structure that can effectively provide a ventilation air volume adjustment mechanism at the lowest possible cost and without detracting from the aesthetics.

As shown in FIG. 2, a conventional ventilation fan for ducts of this type has a ventilation fan main body 101 with an open bottom, a blower installed inside, and an inlet and an outlet for connecting a duct on the side. The opening 101 has an opening 104 in the center.
Suction grill 1 with a peripheral opening formed around 04
02 is detachably provided.

Then, a plate piece 105 covering the central opening 104 is screwed to the back side of the suction grill 102,
Frame-shaped air volume adjustment plate 103 that covers a part of the peripheral opening
was screwed on.

Problems to be Solved by the Invention In such a conventional configuration, the suction grill 102
The plate piece 105 and the air volume adjustment plate 103 attached to the
Since it is separate and independent, there was an issue of increased assembly work time.

The present invention solves the above problems, and aims to provide an air volume adjustment device for a duct ventilation fan that can obtain a desired air volume at low cost.

Means for Solving the Problems In order to achieve the above object, the present invention has a built-in vane and an electric motor, an opening on the bottom surface that serves as a suction port, and a suction opening connected to a duct on the side surface. In a multi-room simultaneous intake/exhaust type ventilation fan body with a discharge opening, a suction grill having a central opening in the center and peripheral openings around it can be detachably attached to the opening on the bottom surface of the ventilation fan body. A plate piece is attached to the central opening of the suction grill, and an air volume adjusting plate that covers a part of the peripheral opening is integrally formed on the plate piece.

Effect With the above configuration, by attaching the plate piece to the central opening of the suction grille, the peripheral opening of the suction grille can be covered with the air volume adjustment plate formed integrally with the plate piece, making assembly easy. This results in a reduction in work man-hours.

Embodiment An embodiment of the present invention will be described below with reference to FIG.

As shown in the figure, a ventilation fan body 1 with built-in blades and an electric motor has an opening 2 on the bottom surface that serves as a suction port, and a suction opening 3 on the side surface to which a duct (not shown) communicating with another room is connected. and a discharge opening 4. In addition, in the opening 2 on the bottom of the ventilation fan main body 1,
A suction grill 5 having a central opening 6 formed in the central portion and a grill-shaped peripheral opening formed around the central opening 6 is removably provided. A plate piece 8 is attached to the central opening 6 of the suction grill 5 to close the central opening 6. An air volume adjustment plate 7 that covers a part of the peripheral opening of the suction grille 5 is integrally formed on the plate piece 8.

In the above configuration, the air sucked in by the blades and electric motor built into the ventilation fan body 1 is simultaneously sucked in through the suction grill 5 and the suction opening 3 provided on the side surface of the ventilation fan body 1.

The amount of air sucked in from the side of the suction grill 5 is limited by an air volume adjustment plate 7 provided corresponding to a part of the peripheral opening of the suction grill 5, and a predetermined air volume is emitted from the suction opening. is sucked in, and other rooms can be ventilated using a single ventilation fan.

Therefore, the relative amount of air that passes through the suction grille 5 and the amount of air that passes through the suction opening 3 provided on the side surface of the ventilation fan body 1 is determined by the air volume adjustment plate 7. It is.

As described above, according to the air volume adjustment device for a duct ventilation fan according to the embodiment of the present invention, the air volume adjustment plate 7 is not independent, but is integrated into the plate piece 8 attached to the central opening 6 of the suction grill 5. , suction grill 5
without compromising the ability to limit the amount of air intake from
Assembly work man-hours can be reduced. In this embodiment, the plate piece 8 is attached to the central opening 6 of the suction grill 5.
Although it is assumed that the plate is closed, an opening for attaching a lighting device or the like may be provided in the plate, and the plate may be attached as long as it is attached to the central opening.

Effects of the invention As is clear from the above embodiments, according to the invention, the air volume adjustment plate is integrally provided on the plate piece attached to the central opening of the suction grill, so the number of man-hours required for installing only the air volume adjustment plate is reduced. This eliminates the need for such parts, reduces parts management, reduces manufacturing costs, and prevents misalignment (creating gaps, etc.) in relation to the plate due to installation variations when only the air volume adjustment plate is installed, as well as its problems. There is no need to take measures to achieve this.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a duct ventilation fan according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of a conventional duct ventilation fan. 1... Ventilation fan body, 2... Opening, 3... Suction opening, 4... Discharge opening, 5... Suction grill, 6... Center opening, 7... Air volume adjustment plate, 8...
...Plate piece.

Claims (1)

[Scope of utility model registration request] In the main body of a multi-room simultaneous intake/exhaust type ventilation fan with built-in blades and an electric motor, an opening on the bottom that serves as an intake, and an opening for the intake and discharge that are connected to the duct on the side. , a suction grill having a central opening in the center and peripheral openings around it is removably provided in the opening on the lower surface of the ventilation fan main body, a plate piece is attached to the central opening of the suction grill, and the plate is attached to the central opening of the suction grill. An air volume adjustment device for a duct ventilation fan, in which one piece is integrally formed with an air volume adjustment plate that covers a part of the peripheral opening.