JPH0367942A - Double reversal type ventilator - Google Patents

Abstract

PURPOSE:To reduce the number of parts, obtain easily the concentricity of driving motors and axial-flow impellers and improve assembling property by attaching the driving motors by a single motor mounting leg. CONSTITUTION:Two sets of an axial-flow impeller 2 and a driving motor 3 for driving the impeller 2 are arranged in series in a cylindrical body 1. The two axial-flow impellers 2 are adapted to be rotated in reverse directions to each other. A pair of the driving motors 3 are fitted to a holder 4a formed in the central portion of a single motor mounting leg 4 in reverse directions so that the opposite sides of the rotating shaft sides of the driving motors 3 are opposed to each other with a space therebetween and fixed by screws 5. The motor mounting leg 4 to which the driving motors 3 are fixed are fitted to a central portion in the body 1 so that circular flanges 4c formed on the free ends of leg portions 4b abut against the inner circumferential surface of the body 1 and fixed by fastening screws 6 which fasten the flanges 4c from outside the body 1. The axial-flow impellers 2 are detachably mounted to the rotating shafts opposed to the opening ends of the body 1 of the driving motors 3 and rotated by the driving motors 3 in reverse directions.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a contra-rotating type ventilation device in which a pair of axial flow impellers and a drive motor for rotating the impellers are arranged in series in a cylindrical main body. It is related to.

[Prior Art] FIG. 4 is a sectional view showing a conventional counter-rotating type ventilation device disclosed in, for example, Japanese Patent Publication No. 61-4895. That is, this counter-rotating type ventilation system has an axial flow impeller 21 and a drive motor 22 that rotates the axial flow impeller 21 arranged in series on the center line of a straight pipe-shaped main body 20 having flanges at both ends. They are arranged so that they face each other. - A set of axial flow impeller 21 and drive motor 22 is connected to the main body 20 by one motor mounting leg 23, and another set of axial flow impeller 21 and drive motor 22 is connected to the main body 20 by separate motor mounting leg 24. installed. The power lead of each drive motor 22 is pulled out from a pull-out hole made in the main body 20.

In the counter-rotating ventilation system described above, the rotational directions of the two axial flow impellers 21 rotationally driven by the respective drive motors 22 are opposite, but the air blowing direction is unidirectional as shown by the arrow in the figure. It is connected to a ventilation duct (not shown) and used for ventilation.

[Problems to be Solved by the Invention] In the conventional counter-rotating type ventilation system, two sets of drive motors 22 and axial flow impeller 21 are individually mounted on motor mounting legs 23.2.
4 is attached to the main body 20, there are many parts, and it is difficult to ensure concentricity.
In addition, if the drive motor 22 is a capacitor induction type and requires condenser wiring, you can either install a wiring box on the outside of the main body 20 and connect the condenser, etc., or you can use the ventilation inside the main body 20 even if it is troublesome. This includes a problem that needs to be solved, such as the need to connect a capacitor or the like on the side opposite to the rotating shaft of the drive motor 22 so that it does not get in the way.

This invention was made in order to solve the conventional problems, and is a counter-rotating type ventilation system that has a small number of parts, is easy to assemble and maintain, and can neatly accommodate the electrical components related to the drive motor in the main body. The purpose is to obtain a device.

[Means for Solving the Problems] A counter-rotating ventilation device according to the present invention has a pair of drive motors in a cylindrical main body, and a single motor mounting leg so that the opposite rotation shaft sides thereof are opposed to each other. Install it in the opposite direction,
Axial flow impellers are attached to each of these rotating shafts.

Another counter-rotating type ventilation system according to the present invention is one in which electric parts such as a capacitor and wiring connected to the drive motor are assembled between the drive motors.

Furthermore, the counter-rotating type pond ventilation system according to the present invention particularly includes a cylindrical retainer that holds and fixes two drive motors at both ends so that there is a gap between the two drive motors. The configuration has a section.

[Function] In the counter-rotating ventilation system of the present invention, each drive motor is attached by a single motor mounting leg, so the number of parts is reduced, and concentricity of the drive motor and axial flow impeller can be easily achieved. , the ease of assembly is improved. Furthermore, since each axial flow impeller faces each open end of the main body, they can be cleaned by being attached and removed from each open end of the main body.

In addition, in other counter-rotating type ventilation systems of the present invention, especially when the drive motor is of the capacitor induction type, electric components such as the capacitor and wiring connected to the drive motor do not interfere with ventilation, and each axial flow vane This also eliminates the problem of attaching and detaching the vehicle.

Furthermore, in another counter-rotating ventilation system of the present invention,
In particular, electrical parts such as a capacitor and wiring connected to the drive motor can be stored between the drive motors in the cylindrical holding part of the motor mounting leg, and the holding part also serves as a protective case for the electrical parts.

[Example] Figures 1 to 3 all show an example of a counter-rotating ventilation system according to the present invention. That is, in the counter-rotating type ventilation system of this example, two sets of axial flow impellers 2 and drive motors 3 for rotationally driving the impellers are arranged in series in a cylindrical main body 1. It is designed to rotate in the opposite direction. The pair of drive motors 3 are fitted into a holding part 4a formed in the center of a single motor mounting leg 4 in opposite directions so that their counter-rotation shaft sides face each other with a gap between them. Fixed. The motor mounting leg 4 to which the drive motor 3 is fixed has an arcuate flange 4c formed at the free end of the leg portion 4b, which abuts against the inner circumferential surface of the main body 1. 1; sea urchin main body], and a tightening screw 6 is tightened and fixed to the flange 4c from the outside of the main body 1. Each axial flow impeller 2 has a main body 1 of a drive motor 3, respectively.
The drive motors 3 rotate the drive motors 3 in opposite directions. However, the air blowing direction is unidirectional as shown by the arrow in FIG. 1, as in the conventional example.

More specifically, as shown in FIGS. 2 and 3, the motor mounting leg 4 is configured in a single-shape configuration in which U-shaped members on the end faces are joined together, and a cylindrical holding portion is provided in the center of the motor mounting leg 4. 4a is formed. The holding portion 4a has a notch 7 in a portion corresponding to the leg portion 4b, from which a power lead 8 of the drive motor 3 is connected.
is brought out. The opposite rotation shaft side of the drive motor 3 is fitted and fixed to both sides of the holding part 4a, respectively.
There is a gap between the opposite rotation shaft sides of the drive motors 3 in a. If the drive motors 3 are of a capacitor induction type, electrical components such as a capacitor 9 and wiring for each drive motor 3 are housed within the space between the opposite rotation shaft sides of the drive motors 3 in the holding portion 4a.

To assemble the counter-rotating ventilation system having the above configuration, each drive motor 3 is attached to the holding part 11a of the motor mounting leg 4, and their power leads 8 are pulled out from the notch 7 of the holding part 4a, and the drive motors are driven into the main body 1. Insert the motor mounting leg 4 together with the motor 3, tighten the screws 6, and then tighten the flange 4 of the motor mounting leg 4 from the outside of the main body 1.
All you have to do is tighten C. When the drive motor 3 is of the direct induction type, electrical parts such as the capacitor 9 and wiring connected to each drive motor 3 are connected to the drive motor 3 in the holding part 4a.
It can be accommodated in time. Two axial flow impellers 2 each have a main body 1
It can be attached and detached by operating from the open ends of the main body 1, respectively. Therefore, maintenance such as cleaning can be performed extremely easily from the open end of the main body 1 without any hindrance. In addition, the electrical parts such as the capacitor 9 and wiring connected to the drive motor 3 housed in the holding part 4a are the same as those housed in the protective case, and there is no problem with ventilation, and the attachment and detachment of the axial flow impeller 2 is easy. It's not a hindrance. Furthermore, since the drive motor 3 is attached to one motor mounting leg 4, the drive motor 3 and the axial flow impeller 2
The concentricity of the parts is easy to achieve, and the ease of assembly is greatly improved.

[Effects of the Invention] As described above, according to the counter-rotating ventilation system of the present invention,
Since each drive motor is attached by a single motor mounting leg, the number of parts is reduced, concentricity of the drive motor and axial flow impeller is easily achieved, and ease of assembly is improved. Furthermore, since each axial flow impeller faces each open end of the main body, they can be cleaned by being attached and removed from each open end of the main body, and maintenance efficiency is also improved.

In addition, in other counter-rotating type ventilation devices according to the present invention, especially when the drive motor is of the capacitor induction type, electrical components such as the capacitor and wiring connected to the drive motor may impede ventilation. This also eliminates the problem of attachment and detachment of the axial flow impeller.

Furthermore, according to another counter-rotating type ventilation device of the present invention, electrical parts such as a condenser and wiring connected to the drive motor can be housed between the drive motors in the cylindrical holding part of the motor mounting leg, and the The part can also serve as a protective case for electrical components.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of a counter-rotating ventilation system showing an embodiment of the present invention, Fig. 2 is an exploded perspective view showing the motor mounting leg and the drive motor, and Fig. 3 is the same motor mounting leg and the drive motor. FIG. 4 is an exploded perspective view showing the relationship between the two, and FIG. 4 is a longitudinal cross-sectional view showing a conventional counter-rotating ventilation system with some parts omitted. In the figure, ■ is the main body, 2 is the axial impeller, 3 is the drive motor, 4 is the motor mounting leg, 4a is the holding part, and 9 is the condenser. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (3)

[Claims] (1) A counter-rotating ventilation device in which a pair of axial flow impellers and a drive motor for rotationally driving the impellers are arranged in series in a cylindrical main body, and the two axial flow impellers are rotated in opposite directions. , the pair of drive motors are mounted on a single motor mounting leg in opposite directions so that their non-rotating shaft sides face each other, and an axial flow impeller is mounted on each of the rotating shafts. Inverting ventilation system. (2) The counter-rotating type ventilation system according to claim 1, characterized in that electrical parts such as a capacitor and wiring connected to the drive motor are assembled between the drive motors. (3) Claim characterized in that the motor mounting leg has a cylindrical holding portion for holding and fixing the two drive motors at both ends so that there is a gap between the drive motors. 1. The counter-rotating ventilation device according to 1.