JPH112451A - Ventilation regulator - Google Patents

Abstract

(57) [Problem] To provide a ventilation controller having an air volume control function with a small pressure loss and a uniform blowing flow velocity. SOLUTION: In a ventilation duct 1 constituting a ventilation path, a first cylindrical adjusting portion 2 defining a plurality of flow paths 4 substantially parallel to a direction along a center line of the ventilation duct 1; A plurality of expanded flow paths that gradually guide the airflow flowing through each flow path 4 defined by the first adjustment section 2 in the vicinity of the adjustment section 2 to the outside with respect to the center line of the ventilation duct 1. 10 are provided side by side, so that one of the first and second adjustment units 2 and 3 can be moved in the direction of the center line of the ventilation duct 1. The opening area of the downstream end of each flow path 4 defined by the first adjusting unit 2 can be changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator for controlling the flow rate and the amount of air blown out of a cylinder constituting a ventilation path for blowing air into a room or the like.

[0002]

2. Description of the Related Art Among such ventilation controllers, there are a ventilator and a ventilator. The former is one in which the cross-sectional area of the flow path is gradually widened in order to convert the kinetic energy of the gas into the energy of pressure, and the latter is one in which the cross-sectional area of the flow path is variable. For example, Japanese Utility Model Laid-Open Publication No. 2-67837 discloses FIG.
As shown in FIG. 0, an air volume adjuster provided with a movable shutter plate 54 that is supported by a threaded rod 50 and adjusts a gap 53 between an opening of a blowout cylinder 52 by a nut 51 that engages with the screw is shown. I have. In this air volume controller, the blow-out tube 52 can be closed by bringing the shutter plate 54 into close contact with the opening of the blow-out tube 52, and the shutter plate 5 is closed.
The blow-out tube 52 can be opened by moving the nozzle 4 away from the opening of the blow-out tube 52. Then, according to the separation distance of the shutter plate 54 from the opening of the blowout cylinder 52,
The width of the gap 53 between the shutter plate 54 and the opening of the blow-out tube 52 changes, so that the amount of air blown from the blow-out tube 52 can be adjusted. In addition to the above, there is another type in which the opening area of the ventilation passage is changed by a door-type movable plate to adjust the amount of air blown out.

[0003]

In the above-mentioned conventional ventilator, what is called a diffuser is as follows.
At the outlet end of the cylindrical body that constitutes the ventilation path, an outlet that expands in a trumpet shape is configured, and a conical cylindrical wind direction plate is provided concentrically inside this outlet. The flow velocity of the blown airflow blown from the outside is different between the outer circumference and the inner side, and it is difficult to obtain a uniform flow rate. In addition, the actual Kaihei 2-67837
In the air volume controller as disclosed in Japanese Unexamined Patent Publication (Kokai) No. 2000-264, in addition to the problem that the opening area of the gap 53 cannot be large with respect to the cross-sectional area of the ventilation path, the pressure loss increases, Since the air flows from the gap 53 to the blow-out tube 52 and is blown out, there is still a problem that it is difficult to obtain a uniform blow-out flow rate.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. An object of the present invention is to provide a ventilation controller capable of obtaining a uniform blowing flow rate, and to reduce pressure loss. Another object of the present invention is to provide a ventilation controller having an air volume control function capable of obtaining a uniform blowing flow rate, and to promote simplification of the configuration of the ventilation controller and improvement of operability.

[0005]

In order to achieve the above object, according to the present invention, a plurality of flow paths which are substantially parallel to a direction along a center line of a cylindrical body are defined in a cylindrical body constituting a ventilation path. The airflow flowing through each of the flow paths defined by the first adjusting section and the flow path defined by the first adjusting section in proximity to the first adjusting section is directed outward with respect to the center line of the cylindrical body. A means is provided for arranging a plurality of conical second adjusting portions that define a plurality of expanded flow paths that are gradually guided.

In order to achieve the above object, a second aspect of the present invention is to provide a cylinder which defines a plurality of flow paths which are substantially parallel to a direction along a center line of the cylinder in a cylinder constituting a ventilation path. A first adjusting portion and an airflow which is connected to the first adjusting portion and flows through each flow path defined by the first adjusting portion is concentric with the center line of the cylindrical body toward the outside. A means having a conical second adjusting portion that defines a plurality of expanded flow paths that are gradually guided in a shape is employed.

In order to achieve the above object, a third aspect of the present invention is to provide one of the first and second aspects, wherein one of the first adjusting section and the second adjusting section is
Means is adopted in which the opening area of the downstream end of each flow path defined by the first adjusting portion can be changed so as to be movable in the center line direction of the cylindrical body.

According to a fourth aspect of the present invention, in order to achieve the above object, the second adjusting portion in the means according to any one of the first and second aspects is fixed to a cylindrical body. The first adjusting portion can be moved in the direction of the center line of the cylinder with respect to the adjusting portion, so that the opening area of the downstream end of each flow path defined by the first adjusting portion can be changed. Adopt means.

[0009] In order to achieve the above object, the invention of claim 5 is defined by the first adjusting part at the center of the second adjusting part in the means according to claim 3 or 4. A means for providing a movement adjusting mechanism for varying the opening area of the downstream end of each flow path is employed.

In order to achieve the above object, the invention according to claim 6 is an apparatus according to claim 3 or claim 4, wherein the downstream end of each flow path defined by the first adjusting portion in the means according to claim 3 or 4 is provided. Means for providing an electric movement adjusting mechanism for changing the opening area is employed.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. Embodiment 1 FIG. Embodiment 1 shown in FIGS. 1 to 7
The ventilation controller is mounted inside a ventilation duct 1 having a circular cross section as a cylindrical body constituting a ventilation path for blowing air into a room or the like, in the vicinity of an outlet of the ventilation duct, and adjusts a blowing flow rate and a flow rate. An adjusting unit 2 and a second adjusting unit 3 are provided. The first adjusting unit 2 has a cylindrical shape that concentrically defines a plurality of flow paths (three flow paths in this embodiment) 4 substantially parallel to a direction along the center line of the ventilation duct 1 in the ventilation duct 1. And is constituted by a cylinder 6 having an inner / outer triple structure concentrically connected at equal intervals by ribs 5. Outermost cylinder 6
Is formed to have an outer diameter capable of sliding in the direction of the center line in the ventilation duct 1, and a screw hole 7 is formed at the center of the innermost cylinder 6.
(See FIGS. 1 and 2). The ribs 5 connect the upstream end of each cylinder 6 on the diameter, and a slit 9 is formed on the downstream end of each cylinder 6 on the diameter corresponding to the rib 5 toward the upstream side. .

The second adjusting part 3 is connected to the downstream end of the first adjusting part 2, and transfers the airflow flowing through each flow path 4 defined by the first adjusting part 2 to the center of the ventilation duct 1. A plurality of widened flow paths 1 that are concentrically guided outwardly with respect to the line
0 is a conical cylindrical member that defines a rib 1 concentrically.
1 and a conical cylinder 12 having an inner and outer triple structure connected at equal intervals. The inner diameter of the outermost conical cylinder 12 on the small diameter end side is configured to be substantially equal to the outer diameter of the downstream end of the second cylinder 6 from the outside of the first adjusting unit 2, and the outer diameter of the second conical cylinder 12 from the outside is adjusted. The inner diameter of the small diameter end is substantially equal to the outer diameter of the downstream end of the innermost cylinder 6 of the first adjustment section 2. The small-diameter end side of the innermost conical cylinder 12 is formed as a cylindrical boss 13. The rib 11 is formed to have a width that can be slidably fitted in each slit 9 formed in each cylinder 6 of the first adjusting portion 2, and connects the upstream end of each conical cylinder 12 in diameter. Part of the rib 11 is the outermost conical cylinder 12
As shown in FIG. 2, the support portion 14 protrudes in the radial direction from the outer periphery of the air passage 1, abuts against the inner surface of the ventilation duct 1, and supports the second adjusting portion 3 in the ventilation duct 1.

The first adjusting unit 2 and the second adjusting unit 3 are aligned with each other so that the downstream end of the first adjusting unit 2 overlaps the small-diameter end of the second adjusting unit 3. Boss 8,
13 is assembled by a movement adjusting mechanism inserted through the cable 13.
The movement adjustment mechanism includes a screw rod 16 with a knob 15 and
The screw rod 16 is threaded except for the base, and the tip side is screwed into the screw hole 7 of the first adjustment unit 2, and the base side is fitted to the boss 13 of the second adjustment unit 3. It is loosely fitted. The knob 15 of the screw rod 16 is located in a concave portion 18 formed at the center of the second adjusting section 3, and the screw rod 16 can be rotated by operating the knob 15. Since the ribs 11 of the second adjusting portion 3 are fitted in the slits 9 of the respective cylinders 6 of the first adjusting portion 2, the rotation of the first adjusting portion 2 is restricted, and the screw rod 16 is rotated. Moves in the direction of the center line. In the state where the screw rod 16 is most loosened, the first adjusting portion 2 is located at a position where the downstream end of each cylinder 6 substantially contacts the small-diameter end side of each conical cylinder 12 of the second adjusting portion 3. Each of the flow paths 4 of the control unit 2 and the respective expanded flow paths 10 of the second control unit 3 communicate with each other in a fully open state. In the state where the screw rod 16 is most tightened, the first adjusting portion 2 is located at a position where the downstream end of each cylinder 6 hits the outer peripheral surface of the second adjusting portion 3 on the large diameter end side of each conical cylinder 12. And each flow path 4 of the first adjustment unit 2 is closed by each conical cylinder 12 of the second adjustment unit 3 to be in a fully closed state.

The ventilation controller having the above-described configuration is mounted by pushing the first control section 2 upstream into the vicinity of the air outlet of the ventilation duct 1, and has a function of adjusting the air volume with respect to the blown air flow. With the operation of the knob 15, the screw rod 16 is loosened,
Each expanded channel 1 of the second adjusting unit 3 is tightened.
0 can be freely adjusted between fully open and fully closed, and the amount of blown air can be adjusted. The opening area of the first adjusting section 2 is substantially the same as the cross-sectional area of the opening of the ventilation duct 1, and the airflow is rectified and flows through each flow path 4 substantially parallel to the flow direction of the airflow, so that the pressure loss is reduced. The airflow passing through each flow path 4 of the first adjustment unit 2 is deflected in the radial direction by each expansion flow path 10 of the second adjustment unit 3, but the flow path 4 and the expansion flow path 10 Since it is formed concentrically, the airflow is not deviated in the sectional direction of the ventilation duct 1. Therefore, a uniform blowing velocity can be obtained.

FIG. 5 shows the result of measuring the wind speed at the measurement points 1 to 11 shown in FIG. 4 on the outlet side of the ventilation controller in the fully opened state. FIG. It is the result of having measured the wind speed about the same measurement points 1-11 on the blow-off side of the ventilation controller in the half-open state. As is clear from FIGS. 5 and 6, according to this ventilation controller, the blowing velocity in the cross-sectional direction of the ventilation duct 1 can be made uniform even if the air volume is adjusted. In addition, knob 1 of movement adjustment mechanism
By arranging 5 at the center of the second adjusting section 3, the air volume can be easily adjusted, and the configuration of the movement adjusting mechanism itself can be simplified such as the screw rod 16.
Furthermore, by configuring the first adjusting unit 2 to be movable,
Even if the air volume is adjusted, the mounted state of the ventilation controller on the indoor side does not change, and the appearance is improved.

If the first adjusting unit 2 is fixed to the ventilation duct 1 and the second adjusting unit 3 is configured to be movable,
The displacement of the second adjustment unit 3 accompanying the air volume adjustment can be visually recognized from the indoor side, and the adjustment state of the air volume can be clearly understood. In addition, the flow path 4 and the expanded flow path 10 may be composed of two or more flow paths. However, it is more effective to form three or four flow paths than two flow paths in order to make the blowing flow velocity uniform.

As shown in FIG. 7, in the case of a ventilation regulator applied to the ventilation duct 1 having a rectangular cross section, the first regulating part 2 is formed as a rectangular tube, and the cylinder 6 defining each flow path 4 is formed. Are all configured in the square tube 19. On the other hand, the second adjusting part 3 is also configured in a pyramid shape, and the conical cylinder 1 defining the expanded flow path 10.
2 are all formed in the pyramidal cylinder 20, but the functions are the same as those described above.

Embodiment 2 FIG. In the ventilation controller of the second embodiment shown in FIG. 8, the movement adjusting mechanism of the ventilation controller shown in the first embodiment is configured by a small-sized motor 21 capable of normal and reverse rotation and a screw rod 22 which rotates by this. , And are electrically driven. Other than the configuration of this part, the configuration is the same as that of the first embodiment. Therefore, the same portions as those described in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof will be omitted. This type of ventilation controller is often mounted downward on the ceiling in a room where it is difficult to control the air volume. With the movement adjusting mechanism by rotating the knob 15, it is difficult to adjust the air volume due to high altitude, but by using a small motor 21 to make it electric, a switch can be arranged on the indoor wall or the like. The air volume can be easily adjusted by operating the switch, and the operability is improved. Other functions are the same as those of the first embodiment.

Embodiment 3 The ventilation controller according to the third embodiment shown in FIG. 9 has a configuration in which the first adjustment unit 2 and the second adjustment unit 3 of the ventilation controller according to the first embodiment are fixed in a fully open position. It is. There is no configuration related to the air volume adjustment described in the first embodiment, and the other configurations are the same as those in the first embodiment. Therefore, the same parts as those of the first embodiment are denoted by the same reference numerals as those of the first embodiment,
A description of them will be omitted.

This ventilator does not have the function of adjusting the air volume of the ventilator of the first embodiment, and is an outlet part called a diffuser. The conventional diffuser is, so to speak, composed of only the second adjusting portion 3 and simply performs the function of expanding the airflow to blow out the air, and the blowout flow velocity in the cross-sectional direction of the blowout outlet is not uniform. In this ventilation controller, the opening area of the first controller 2 is the same as that of the ventilation duct 1.
And the pressure loss is small because the airflow is rectified and flows through each flow path 4 substantially parallel to the flow direction of the airflow. The airflow that has passed through each flow path 4 of the first adjustment unit 2 is expanded in the radial direction by each expansion flow path 10 of the second adjustment unit 3 and flows. Are formed concentrically, so that the air flow is not deviated in the sectional direction of the outlet. Therefore, a uniform blowing flow rate can be obtained, and air can be blown into the room with less deviation.

[0021]

As described above, according to the first aspect of the present invention, it is possible to obtain a ventilation controller capable of obtaining a uniform blowing velocity.

According to the second aspect of the present invention, it is possible to obtain a ventilation controller capable of obtaining a more uniform blowing flow rate.

According to the third aspect of the present invention, there is provided a ventilation controller having a function of controlling the air volume, which has a small pressure loss and a uniform flow velocity.

According to the fourth aspect of the present invention, it is possible to obtain a ventilation controller having a good appearance and having a function of controlling the amount of air with a small pressure loss and a uniform blowing flow rate.

According to the fifth aspect of the present invention, the operability relating to the air volume adjustment is improved together with the effect according to the third or fourth aspect, and the configuration is simplified.

According to the sixth aspect of the present invention, in addition to the effect according to the third or fourth aspect, the operation of adjusting the air volume can be easily performed even when the apparatus is installed at a high place, and the operability is improved. improves.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a ventilation controller according to a first embodiment.

FIG. 2 is an exploded perspective view illustrating the ventilation controller according to the first embodiment.

FIG. 3 is a cross-sectional view of the ventilation controller of the first embodiment in a half-open state.

FIG. 4 is an explanatory diagram showing wind speed measurement points of the ventilation controller according to the first embodiment.

5 is an explanatory diagram showing a measurement result regarding a wind speed measured at a measurement point in FIG. 4 in a fully open state.

FIG. 6 is an explanatory diagram showing a measurement result regarding a wind speed measured at a measurement point in FIG. 4 in a half-open state.

FIG. 7 is an exploded perspective view showing another ventilation controller of the first embodiment with a part thereof cut away.

FIG. 8 is a sectional view showing a ventilation controller according to a second embodiment.

FIG. 9 is a cross-sectional view illustrating a ventilation controller according to a third embodiment.

FIG. 10 is a configuration diagram showing a conventional air volume controller.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ventilation duct, 2 1st adjustment part, 3 2nd adjustment part, 4 flow path, 6 cylinders, 10 expansion flow path, 1
2 conical cylinder, 15 knobs, 16 screw rods, 21
Small motor.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomoko Suzuki 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Inventor Takayuki Yoshida 2-3-2 Marunouchi, Chiyoda-ku, Tokyo 3 Rishi Electric Co., Ltd.

Claims (6)

[Claims] 1. A first cylindrical adjusting portion that defines a plurality of flow paths that are substantially parallel to a direction along a center line of the cylindrical body in the cylindrical body that constitutes the ventilation path, and the first adjusting section. A plurality of enlarged flow paths that gradually guide the airflow flowing through the respective flow paths defined by the first adjusting part in the vicinity of the part toward the outside with respect to the center line of the cylindrical body. A ventilation controller provided with a plurality of conical second control units. 2. A cylindrical first adjusting portion which concentrically defines a plurality of flow paths substantially parallel to a direction along a center line of the cylindrical body in the cylindrical body constituting the ventilation path, A plurality of expansion units connected to the first adjustment unit and configured to gradually and concentrically guide an airflow flowing through each flow path defined by the first adjustment unit outwardly with respect to a center line of the cylindrical body. A ventilation controller including a conical second control section that defines an open channel. 3. The ventilation controller according to claim 1, wherein one of the first adjustment unit and the second adjustment unit can be moved in a center line direction of the cylindrical body. In this way, the ventilation controller has a configuration in which the opening area of the downstream end of each flow path defined by the first control section can be changed. 4. The ventilation controller according to claim 1, wherein the second adjusting section is fixed to the cylinder, and the first adjusting section is fixed to the second adjusting section. A ventilation controller having a configuration in which the adjusting section can be moved in the direction of the center line of the cylindrical body so that the opening area of the downstream end of each flow path defined by the first adjusting section can be changed. 5. The ventilator according to claim 3, wherein a downstream side of each flow path defined by the first adjusting part is provided at a center of the second adjusting part. Ventilation controller with a movement adjustment mechanism that changes the opening area of the end. 6. An electric ventilation controller according to claim 3, wherein the opening area at the downstream end of each flow path defined by the first adjustment section is variable. Ventilation controller provided with a movement adjustment mechanism.