JPH08338123A - Exhaust device and flow regulating valve therefor - Google Patents

Abstract

PURPOSE: To prevent the deposition of dust and allow easy cleaning by keeping the lower end of a duct inserted from a ceiling along the inner side of a room, open in such a state as afloat from a floor and eliminating the projection of the duct inside the room. CONSTITUTION: A duct 11 is inserted from the ceiling 3 of a sealed room 1 along the side wall 2 thereof. The upper end of the duct 11 is fitted with an exhaust fan 15 and the duct 11 is secured to the side wall 2 in such a state as afloat from a floor 4. Also, a rotatable flow regulating valve 12 is provided in the duct 11 near the intake port 13 thereof. As a result of so forming an exhaust device 10, no projection appears inside the room 1, and dust or the like is not deposited. Also, the intake port 13 at the lower end of the duct 11 is provided in such a state as not in contact with the floor 4, thereby allowing an easy cleaning work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust device for discharging odors and the like from inside a room, and a flow control valve incorporated in this exhaust device.

[0002]

2. Description of the Related Art When indoors for raising experimental animals and the like, it is necessary to discharge the odor emitted from the animals to the outside, and an exhaust device for that purpose is attached. FIG. 5 shows a conventional exhaust system, in which an animal breeding shelf 5 is installed inside a room 1 which is surrounded by a side wall 2, a ceiling 3 and a floor 4 and hermetically sealed. The exhaust device 100 is attached to the duct pipe 110 inserted into the room 1 from the ceiling 3 and the upper end portion of the duct pipe 110 extracted from the ceiling 3, and has a fan 120 that is rotationally driven provided therein. And 130.

A plurality of duct pipes 110 are connected in the longitudinal direction and inserted into the room 1. The connection of the plurality of duct pipes 110 is performed via the flange portion 140.
In order to insert the duct pipe 110 having the flange portion 140, the opening 6 is formed in the ceiling 3 of the room 1. Reference numeral 7 is a seal member for closing the opening 6.

The duct pipe 110 sucks the air in the room 1 and guides it to the outside, and is attached with an intake pipe 150 for sucking the air. The intake pipe 150 is attached to the lower side surface of the duct pipe 110, and the tip portion thereof projects into the room 1. As a result, the intake pipe 140 sucks air from the lower part of the room 1 to remove the odor of the room 1.

FIG. 6 shows a damper 160 attached to the intake pipe 150, and by sliding in the lateral direction, the opening degree of the intake pipe 150 is adjusted, whereby the amount of air sucked and discharged is adjusted. . The above exhaust device has a large weight, so that the whole is supported by the frame 170 installed on the floor 4. In FIG. 1, 8 is a differential pressure damper attached to the side wall opposite to the exhaust device,
It is provided to make room 1 positive pressure.

[0006]

The conventional exhaust system 100 described above has the following problems. Since the intake pipe 150 projects inside the room, it interferes with work and walking. Since the pedestal 170 that supports the whole is installed on the floor, it is difficult to clean the floor, and there is a problem in hygiene. There are many protruding portions such as the flange portion 140 and the intake pipe 150, and dust, bacteria, and the like are easily accumulated or attached to these portions, and cleaning thereof is difficult.

In view of the above, it is an object of the present invention to provide a new exhaust system that solves all the problems of the conventional exhaust system and a flow control valve used for the new exhaust system.

[0008]

The exhaust system according to the present invention has a duct pipe inserted along the side wall from the ceiling of a room to be sealed, in which a lower end is opened to form an intake port, and the room is sealed. Suction means connected to the upper end of the duct pipe extracted from the ceiling to apply an air suction force to the duct pipe, a mounting member for fixing the duct pipe to the side wall in a non-contact state with the floor, and a duct pipe near the intake port. The flow control valve is rotatably mounted inside.

The flow rate control valve of the present invention used in this exhaust system comprises a valve body arranged inside the duct pipe near the intake port, and a shaft body for rotatably mounting the valve body in the duct pipe. The valve body is manually rotated to adjust the flow rate.

In the above-described exhaust device, since the intake port for sucking air is formed by opening the lower end portion of the duct pipe, it does not project inside the room. For this reason, dust etc. do not adhere and it becomes hygienic. Further, since this duct pipe is mounted by the mounting member in a floating state which is not in contact with the floor, the floor can be reliably cleaned. Since the flow rate adjusting valve used in this exhaust device is arranged inside the duct pipe, there is no adhesion of dust and the like, which is also sanitary.

[0011]

FIG. 1 shows the overall construction of an embodiment of the present invention.
The same parts as those in FIG. 5 are designated by the same reference numerals and correspond to each other. That is, the room 1 in which the animal breeding shelf 5 is installed can be sealed by the side wall 2, the ceiling 3 and the floor 4, and the differential pressure damper 8 for keeping the room 1 at a positive pressure is provided on the side wall 2.
It is provided in. The exhaust device 10 for discharging the odor in the room 1 includes a duct pipe 11 and a flow rate adjusting valve 12 provided in the duct pipe 11.

The duct pipe 11 is inserted from the ceiling 3 along the side wall 2 into the room 1, and an opening 6 is formed in the ceiling 3 for this insertion. The duct pipe 11 has a straight line shape, and a lower end portion thereof is opened to form an intake port 13 for sucking air. This duct pipe 11
The upper end of the is extracted from the ceiling 3, and suction means is attached to the extracted end. In the illustrated example, the suction means is an exhaust pipe 14 connected to the upper end of the duct pipe 11.
And a fan 15 provided inside the exhaust pipe 14, and power is transmitted from a motor (not shown) to the fan 15 to rotate the fan 15 to suck air.

The duct pipe 11 is fixed to the side wall 2 by a bracket 16 as a mounting member. This fixing is performed so that the intake port 13 at the lower end portion is lifted from the floor 4, that is, the intake port 13 is not in contact with the floor 4.
In this way, when the duct pipe 11 is not in contact with the floor 4, it does not hinder the cleaning and the floor surface can be reliably cleaned, so that the hygiene of the room 1 can be maintained.

FIG. 2 shows a cross section of the duct pipe 11, and the duct pipe 11 is constructed by connecting a plurality of pipe bodies 11a and 11b in the longitudinal direction thereof. This tube 11a, 1
1b is connected by connecting the end of one tube 11b to the other tube 11b.
It is carried out by fitting it into the end of a and spot welding or the like. In the connection of such a plug-in structure, a flange portion for the connection is unnecessary, and the protruding portion is eliminated. Therefore, there is an advantage that the opening 6 of the ceiling 3 for inserting the duct pipe can be made small and the seal member 7 for closing the opening 6 can be easily attached. In addition, dust, bacteria, etc. do not accumulate on the protruding portion, which is hygienic. In addition, as the material of the duct pipe 11, corrosion,
It is possible to use a metal such as stainless steel or aluminum alloy that is free from rust and is easy to clean by wiping.

The flow rate adjusting valve 12 is disposed inside the duct pipe 11 at the portion of the intake port 13. The flow rate adjusting valve 12 adjusts the amount of air sucked and discharged, but does not protrude from the duct pipe 11 because it is provided inside the duct pipe 11. For this reason, not only does it hinder work and walking, but dust and the like are not attached.

3 and 4 show this flow rate adjusting valve 12, which is a valve body 1 made of a circular plate provided in a duct pipe 11.
7 and a bolt 18 as a shaft body for attaching the valve body 17 to the duct pipe 11. The valve body 17 rotates in the duct pipe 11 to change the size of the air flow path, thereby adjusting the amount of air to be exhausted. The bolt 18 is inserted from the outside of the duct pipe 11, and the valve body 17 is inserted.
By engaging with, it becomes the center of rotation of the valve body 17. Such a flow rate adjusting valve 12 adjusts its flow rate by inserting a hand from the intake port 13 of the duct pipe 11 and manually rotating the valve body 17, but since it is provided inside the duct pipe 11. The deterioration of the appearance of the duct pipe 11 can be prevented without impairing the appearance of the duct pipe 11.

The present invention is not limited to the above embodiment, but various modifications can be made. For example, a vacuum pump may be used as the suction means and this pump may be connected to the duct pipe. Further, the duct pipe may have a single pipe structure.

[0018]

EFFECT OF THE INVENTION Since the exhaust device of the present invention has no protruding portion, it does not adhere to dust and the like, does not interfere with work or walking, and can be easily cleaned. In addition, since it is not in contact with the floor, it is easy to clean the floor and keep the floor hygiene.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an entire embodiment of the present invention.

FIG. 2 is a sectional view of a duct pipe.

FIG. 3 is an enlarged view of part A in FIG.

FIG. 4 is an enlarged view of part B in FIG.

FIG. 5 is a cross-sectional view of a conventional exhaust device.

FIG. 6 is a front view of an intake pipe.

[Explanation of symbols]

 1 room 2 side wall 10 exhaust device 11 duct pipe 12 flow control valve 13 intake port 15 fan 17 valve body 18 bolt

Claims (3)

[Claims] 1. A lower end is opened to form an intake port,
A duct pipe that is inserted from the ceiling of the room along the side wall, a suction unit that is connected to the upper end of the duct pipe that is pulled out from the ceiling of the room and that applies an air suction force to the duct pipe, and the duct pipe to the floor. An exhaust device comprising: an attachment member fixed to the side wall in a non-contact state with the side wall; and a flow rate adjustment valve rotatably attached inside the duct pipe near the intake port. 2. The exhaust system according to claim 1, wherein the duct pipes are connected by a structure in which one end is inserted into the other end. 3. A valve body provided inside a duct pipe near an intake port, and a shaft body for rotatably mounting the valve body in the duct pipe, wherein the valve body is manually rotated, A flow rate adjusting valve characterized by adjusting the flow rate.