JPS6212202Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a ventilation unit suitable as a duct ventilation fan that ventilates two rooms at the same time. A drive motor is attached, and blower fans of different sizes are attached to both ends of the rotating shaft of this drive motor to form an internal unit. By having a removable mounting structure that can be reversed on either side, it is possible to support two-room ventilation that requires different airflow volumes, and also to support two-room ventilation with different airflow load conditions. The objective is to provide a blower unit that can accommodate the following.

An embodiment in which the present invention is applied to a duct ventilation fan for simultaneous ventilation of two rooms will be described below with reference to the drawings.

Reference numerals 1 and 2 denote ceiling plates and partition walls of the building, which partition the building into an attic 3, a bathroom 4 as a first room, and a toilet 5 as a second room. Reference numeral 6 denotes a rectangular outer casing with an open bottom, which is disposed in the attic 3 so that an intake port 7, which is an open bottom, communicates with the upper part of the bathroom 4. Semicircular exhaust ports 9 and 10 are formed in the substantially central part of the left side plate of this outer casing 6 and are vertically adjacent to each other with the partition piece 8 in between. An intake port 11 is formed. Reference numeral 12 denotes a mounting plate having a substantially rectangular shape, and mounting holes 13 are formed in the vicinity of each square portion.
A spiral first casing 16 having a bell mouth 14 and a discharge port 15 is attached to one surface of the mounting plate 12 by screws, and a bell mouth 17 and a discharge port 18 are attached to the other surface of the mounting plate 12. A second casing 19 having a spiral shape is attached by screws. In this case, the first
The casing 16 is larger than the second casing 19. Furthermore, a double-shaft drive motor 20 is attached to the mounting plate 12,
A first blower fan 21 made of a Sirotskov fan is installed at the lower end 20a of the rotating shaft so as to be located inside the first casing 16 and facing the bell mouth 14, and a Sirotsukow fan 21 is mounted at the upper end 20b of the rotating shaft. A blower fan 22 is located inside the second casing 19 and is attached to face the bell mouth 17. In this case, the first blower fan 21 is the second blower fan 2.
It is formed larger than 2. Thus, the mounting plate 12, casing 16, and
19, drive motor 20, ventilation fans 21 and 22
The internal unit A is arranged in the outer casing 6 so as to partition the inside of the outer casing 6 into a first ventilation chamber 23 in the lower part and a second ventilation chamber 24 in the upper part.
The mounting screw 25 inserted from below into the mounting hole 13 of
is attached to the inside of the outer casing 6 by screwing it into a mounting piece 26 welded to the inner surface of the peripheral side plate of the outer casing 6. In this case, the first casing 16 and therefore the first blowing fan 21 are located in the first blowing chamber 23 and the second casing 19 and therefore the second blowing fan 22 are located in the second blowing chamber 24. (see FIG. 1), and the discharge ports 15 and 18 communicate with the exhaust ports 9 and 10, respectively. Reference numeral 27 denotes a two-layer pipe serving as an exhaust duct, which has a long cylindrical shape, and the inside thereof is partitioned into two passages 29 and 30 by a partition wall 28. Reference numeral 31 designates a connection port body that is screwed to the left side plate of the outer casing 6 so as to surround the exhaust ports 9 and 10, and the right end portion of the double-layer pipe 27 is fitted and connected to this connection port body. By passage 29,3
0 are communicated with exhaust ports 9 and 10 of the outer casing 6, respectively. Note that the left end portion of the double-layer pipe 27 is led out to the outdoors. Reference numeral 32 designates a connecting port body that is screwed to the right side plate of the outer casing 6 so as to surround the intake port 10, and one end of an intake pipe 33, which is an intake duct, is fitted and connected to this connection port body. The other end of the intake pipe 33 passes through the ceiling plate 1 and faces the upper part of the interior of the toilet 5. Note that 34 is a decorative frame attached to the intake port 7 portion of the outer casing 6, and 35 is a grill attached to the opening portion of the intake pipe 33 facing into the toilet 5.

For example, when the volume of the toilet 5 is extremely small compared to the bathroom 4 and the ventilation of the toilet 5 requires a small air volume, the first casing 16 and the first blower fan 21 are used as shown in FIG. The internal unit A is arranged in the outer casing 6 so that the inner unit A is on the first ventilation chamber 23 side. Then, when the drive motor 20 is energized to rotate the blower fans 21 and 22, the air in the bathroom 4 is transferred to the air intake port 7, the first blower chamber 23, and the bell. The air in the toilet 5 is discharged outdoors through the mouth 14, the first casing 16, the discharge port 15, the exhaust port 9, and the passage 29, and the air in the toilet 5 is discharged through the intake pipe 33, Connection mouth body 32, intake port 1
1. The air is discharged outdoors through the second ventilation chamber 24, the bell mouth 17, the second casing 19, the discharge port 18, the exhaust port 10, and the passage 30, thereby performing simultaneous ventilation operation of the bathroom 4 and toilet 5. . In this case, the first blower fan 21 is the second blower fan 2.
2 and correspondingly, the first casing 16 is also formed larger than the second casing 19, so the air volume and static pressure of the first blower fan 21 are greater than those of the second blower fan. Therefore, the bathroom 4 with a large volume will be ventilated with a large air volume and a large static pressure, and the toilet 5 with a small volume will be ventilated with a small air volume and a small static pressure.

On the other hand, when the air blowing load state of the toilet 5 is relatively high compared to that of the bathroom 4, such as when the volume of the toilet 5 is relatively large and the intake pipe 33 is extremely long, The arrangement of the internal unit A is reversed vertically from the state shown in FIG. 1, so that it is in the state shown in FIG. This can be easily done by screwing in and out the mounting screws 25 that attach the mounting plate 12 to the mounting piece 26. In the state shown in FIG. 2, the first
The casing 16 and therefore the first blowing fan 21 are located in the second blowing chamber 24, and the second casing 19 and therefore the second blowing fan 22 are located in the first blowing chamber 23, and the discharge port 15 communicates with the exhaust port 10, and the discharge port 18 communicates with the exhaust port 9. Then, when the drive motor 20 is energized to rotate the ventilation fans 21 and 22, the second
Due to the blowing action of the blower fan 22, the air in the bathroom 4 passes through the intake port 7, the first ventilation chamber 23, the bell mouth 17, the second casing 19, the discharge port 18, the exhaust port 10, and the passage 29 to the outside. is discharged, and
Due to the action of the first blower fan 21, the toilet 5
The air flows through the intake pipe 33, the connecting port body 32, and the intake port 1.
1. The air is discharged outdoors through the second ventilation chamber 24, the bell mouth 14, the first casing 16, the discharge port 15, the exhaust port 10, and the passage 30, thereby performing simultaneous ventilation operation of the bathroom 4 and toilet 5. . Therefore,
The bathroom 4 with a small air blowing load will be ventilated with a small air volume and small static pressure, and the toilet 5 with a relatively large air blowing load will be ventilated with a large air volume and high static pressure.
The air blow balance between the two is maintained.

The above embodiment is a case in which the present invention is applied to a duct ventilation fan, but the present invention is not limited to this, and the present invention is not limited to this. Applicable to all units.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but may be implemented with appropriate modifications within the scope of the invention.

As explained above, in this invention, a double-shaft drive motor is attached to a mounting plate, and blower fans of different sizes are attached to both ends of the rotating shaft to form an internal unit, which is housed inside an outer casing. Since it is attached removably, it can be used to blow air into two rooms that require different amounts of air to be blown, and it can also be used to blow air into two rooms with different air load conditions, thereby maintaining the air blowing balance between the two. Moreover, it has practical effects such as being able to cope with a case where a large air volume or large air load is required on either side of the two air blowing chambers partitioned into the outer casing by the mounting plate. play.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to a duct ventilation fan, and FIGS. 1 and 2 are longitudinal sectional views in different usage conditions, and FIG. 3 is an enlarged perspective view of the internal unit. In the drawing, 4 is a bathroom (first room), 5 is a toilet (second room), 6 is an outer casing, 12 is a mounting plate, 16 is a first casing, 19 is a second casing, 2
0 is a drive motor, 21 is a first blower fan, 22
is the second ventilation fan, 23 is the first ventilation chamber, 24
indicates the second ventilation chamber, and A indicates the internal unit.

Claims (1)

[Scope of utility model registration request] A double-shaft drive motor is attached to a mounting plate that partitions the inside of the outer casing into two ventilation chambers, and ventilation fans of different sizes are attached to both ends of this drive motor to form an internal unit. A blower unit which is removably attached to the outer casing so that the blower fan can be inverted and positioned on either side of the two blower chambers.