JP2000241010A - Flexible duct with air volume regulating mechanism and air conditioner facility using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a facility cost of a duct facility by attaching a clamper for regulating an air volume to regulate a sectional area of an inner air duct by throttling a flexible duct in such a state that a flexible tube of a constituting material of the duct is radially contracted. SOLUTION: A string-like clamper 9 for regulating a sectional area of an inner air duct 5 by throttling an inside flexible tubular material 7 in a radially contracting state on the way of a flexible duct 5 of a double structure provided with a heat insulator layer 8 between an outside coating material 6 and the material 7 is disposed between the layer 8 and the material 7. Both operating ends 9a of the clamper 9 are extended from a pore 10 formed at the material 6 to an outside of the duct 5. Thus, the cost of the duct facility, and labor and the time required for building the duct facility can be largely reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible duct having an air volume adjusting mechanism and an air conditioner using the same.

[0002]

2. Description of the Related Art Conventionally, in order to adjust the amount of air flowing through an internal air passage in a duct for an air conditioner or the like, a so-called damper that adjusts the amount of air by adjusting the ventilation resistance by adjusting the angle of a blade disposed in the air passage. The shutter was interposed in the duct.

[0003]

However, the damper and the shutter have blades whose angles can be adjusted, so that the structure is complicated and the cost is high. In addition, since the weight is large, the mounting work is heavy. .

In addition, since the amount of air flow is adjusted by adjusting the angle of the blades, wind noise is easily generated by the blades, and noise problems such as leakage of the wind noise through the duct to the room to be air-conditioned are liable to occur.

[0005] In view of this situation, the main problems of the present invention are:
The above problem is solved by rational improvement focusing on flexible ducts that are frequently used in the construction of duct facilities in recent years.

[0006]

Means for Solving the Problems [1] In the invention according to claim 1, the sectional area of the internal air passage is reduced by reducing the diameter of the flexible tubular body as a constituent material of the flexible duct. A configuration is adopted in which a squeezing tool for adjusting the air volume to be adjusted is provided.

That is, in this configuration, by utilizing the fact that the flexible duct is made of a flexible material, the flexible tubular body which is a constituent material of the flexible duct is reduced to a state where the diameter thereof is reduced by the above-described tightening tool. The cross-sectional area of the internal air passage is adjusted, whereby the ventilation resistance of the flexible duct is adjusted to adjust the amount of air flow in the internal air passage.

[0008] According to this configuration, compared with a damper or a shutter having vanes whose angle can be adjusted, only the provision of a squeezing tool for squeezing a flexible tubular body is required. It is simple and can greatly reduce the weight,
Thus, the facility cost of the duct facility can be reduced, and the labor and time required for constructing the duct facility can be significantly reduced in combination with the original ease of construction of the flexible duct.

In addition, since the air flow is adjusted by narrowing the flexible tubular body to reduce the diameter of the entire air passage, the air flow is adjusted by adjusting the angle of the blades arranged in the air passage to adjust the air flow. In addition, wind noise is less likely to occur, and in this regard, a high effect can be obtained also in terms of measures against noise in duct facilities.

[2] In the invention according to the second aspect, the squeezing tool is disposed between the outer covering material and the inner flexible tubular body in the flexible duct having a double structure, and the squeezing tool is used for the inner side. Of the flexible tubular body of (1).

[0011] According to this configuration, since the squeezing tool does not act to squeeze the outer covering material, if a flexible duct having a double structure is used, as an alternative, the squeezing tool arranged on the outer peripheral side of the outer covering material may be used. By using a mode in which the outer covering material and the inner flexible tubular body are both squeezed together to adjust the cross-sectional area of the air passage, the squeezing operation performed against the shape-retaining drag of the duct component is performed with a small operation force. In this respect, the air volume adjustment operability can be improved.

Further, since the squeezing tool is provided between the outer covering material and the inner flexible tubular body, the outer wrapping material can be provided without any additional equipment such as providing a dedicated cover for covering the squeezing tool. With the form also used as a cover body for the squeezing tool, it is possible to avoid troubles such as the squeezing tool being caught by another object in the installation and installation of the flexible duct, and thereby it is possible to sufficiently maintain the original easiness of installation of the flexible duct.

When a flexible duct having a double structure filled with a heat insulating material is used between the outer covering material and the inner flexible tubular body, an intermediate heat insulating material layer and the inner flexible tubular body are used. If the squeezing tool is arranged between the squeezing means, the force required for the squeezing operation can be reduced more effectively.

[3] In the invention according to the third aspect, the operation end of the wringer is configured to extend outside the duct body.

According to this configuration, since the operating end of the wringer extends outside the duct body, the operator operates the operating end from outside the duct when installing the flexible duct. The operation of the strangler can be easily performed.

[4] In the invention according to claim 4, the operation end of the squeezing tool is configured to extend toward the internal air passage of the duct body.

According to this configuration, after the installation of the flexible duct, the work around the duct is difficult to perform.
When it is easier to operate from the inside of the duct through the end opening of the duct, the operator operates the operation end of the wrench extending from the inside of the duct to the inside air duct side of the duct body, and The operation can be easily performed.

[5] In the invention according to claim 5, the squeezing tool is provided with a scale for reading the amount of squeezing.

According to this structure, the operator can operate the wrench while checking the amount of squeezing of the wringer (in other words, the amount of squeezing of the internal air path) by the scale, and thereby the air volume by the operation of the wringer is obtained. Adjustments can be made accurately.

[6] In the invention according to claim 6, the tightening tool is provided with a fixing tool for fixing the tightening tool in a required tightened state.

According to this configuration, since the squeezing tool can be fixed in a required squeezed state by the fixing tool, the squeezing tool can be fixed, for example, as an alternative method by directly connecting the squeezing tool and fixing the squeezed state. It is possible to easily adjust the amount of air by adjusting the amount of the tool. Note that various types of fixing devices can be adopted as the fixing device. However, if a so-called one-touch fixing device is used, the air volume can be more easily adjusted by adjusting the squeezing amount of the squeezing device.

[7] According to a seventh aspect of the present invention, as the air conditioning equipment using the flexible duct with the air volume adjusting mechanism according to the fourth aspect of the present invention, the flexible duct is an air blow-out device or an air intake for a room to be air-conditioned. In a state where the device is connected to the device, the operation end of the squeezing device extended to the internal air passage side of the duct body faces the device through the duct connection port of the air blowing device or the air suction device.

According to this configuration, after the installation of the air-conditioning equipment is completed, the worker puts his / her hand into the air-blowing or air-suctioning equipment from the room side of the room to be air-conditioned and squeezes the air-conditioning equipment. By manipulating the operating end of the fixture, the ventilation volume of the flexible duct connected to the fixture can be adjusted, which allows the worker to enter the duct installation area (for example, behind the ceiling) partitioned from the room. It is possible to easily adjust the amount of air blown out from the air blow-out device and the amount of air blown in from the air suction device, as compared with the case of performing an operation of adjusting the amount of air flowing into the duct after entering.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 shows an air conditioner, 1 is an air blow-out device disposed on a ceiling 3 of a room 2 to be air-conditioned, and 4 is a metal square duct disposed behind the ceiling. Reference numeral 5 denotes a flexible duct that connects the branch port 4a of the square duct 4 and the duct connection port 1a of the air blowing device 1, and divides the conditioned air A sent from the air conditioner to the square duct 4 to the flexible duct 5. The air-conditioned room 2 is air-conditioned by blowing the divided air A from the outlet 1b of the air blowing device 1 into the room to be air-conditioned.

The flexible duct 5 has an air volume adjusting mechanism. Specifically, as shown in FIGS. 2 and 3, a heat insulating material layer is provided between the outer covering material 6 and the inner flexible tubular body 7. 8
In the middle of the flexible duct 5 having the double structure provided with the cord, the string-shaped squeezing tool 9 for adjusting the cross-sectional area of the internal air passage f by squeezing the inner flexible tubular body 7 so as to reduce its diameter is insulated. It is disposed between the material layer 8 and the inner flexible tubular body 7, and both operation ends 9 a of the wringer 9 are connected to the outside of the duct body 5 from the small holes 10 formed in the outer covering material 6. It has been extended. Reference numeral 19 denotes a spiral core of the flexible duct 5.

As shown in FIG. 4, the squeezing tool 9 is provided with a scale 11 for reading the amount of squeezing, and a one-touch type fixing tool 12 for fixing the squeezing tool 9 in a required squeezed state. It is attached to the operation end 9a.

That is, the operator pulls both operating ends 9a of the wrench 9 while checking the amount of squeezing (that is, the amount of squeezing of the inner flexible tubular body 7) by the scale 11, whereby the operator can pull out the squeezing tool 9 as shown in FIG. As shown in (b) and FIG. 3, the inner flexible tubular body 7 is squeezed from the periphery to adjust the cross-sectional area of the internal air passage f. Then, the squeezing tool 9 is fixed by the one-touch type fixing tool 12 in a required squeezed state, whereby the amount of air flow in the flexible duct 5 is adjusted, and the amount of the adjusted air A blown from the air blowing device 1 into the room is reduced. adjust.

In the one-touch fixing device 12 described above, the button member 13 having the through hole 13a is fitted into the bottomed cylindrical case body 15 in a state where the button member 13 is urged to the projecting side by the spring 14; The through hole 1 of the button member 13 inside the case body 15 through the two lateral holes 15a of the case body 15
It has a structure in which a squeezing tool 9 is passed through 3a.

That is, by pressing the button member 13 to make the two lateral holes 15a of the case body 15 and the through holes 13a of the button member 13 concentric, the case body 15 is held by hand. The pulling operation of the wringer 9 is allowed,
The pressing operation of the button member 13 is released and the squeezing tool 9 is sandwiched between the button member 13 and the case body 15 by the urging force of the spring 14 so that the case body 15 and the squeezing tool 9
Relative movement of the outer covering material 6 in this blocked state.
By locking the case body 15 to the small hole 10, the squeezing tool 9 is fixed in a required squeezed state.

[Second Embodiment] In the example shown in FIG. 5, between a heat insulating material layer 8 and an inner flexible tubular body 7 in a flexible duct 5 having a double structure in the vicinity of a connection portion to the air blowing device 1. And the two operating ends 9a of the squeezing tool 9 extend from the small holes 16 formed in the inner flexible tubular body 7 toward the internal air passage f of the duct body 5. Then, these operation ends 9a are further connected to the air blowing device 1.
Through the duct connection port 1a.

That is, in this example, the worker puts his hand into the air blowing device 1 from the room side of the room 2 to be air-conditioned and operates the operating end 9a of the squeezing device 9, whereby the air blowing device 1 is operated. The amount of air blown out from can be adjusted.

[Third Embodiment] In the example shown in FIG. 6, the squeezing tool 9 is provided on the outer peripheral side of the outer covering material 6 in the flexible duct 5 having a double structure.
A band-shaped cover body 17 covering the outer cover 6 is sewn and attached to the outer covering material 6, and both operation ends 9 a of the wrench 9 are extended to the outside of the duct body 5 through small holes 18 formed in the cover body 17. I'm letting it out.

In other words, in this example, the squeezing tool 9 is pulled in a state where the squeezing tool 9 is guided by the cover body 17, so that the outer covering material 6, the heat insulating material layer 8, and the inner flexible tubular body 7 are connected. The cross-sectional area of the internal wind path f is adjusted in such a manner that the three can be reduced together.

[Other Embodiments] Next, other embodiments will be listed.

The squeezing tool is not limited to the string-shaped tool shown in each of the above-described embodiments, but may be of various shapes and shapes such as a band-shaped or chain-shaped tool.
The structure can be used.

The flexible duct is not limited to a double structure, but may be a single structure or a multi-layer structure having three or more layers. A flexible tubular body, a covering material, a heat insulating material,
The material of the constituent material such as the core material may be any.

In the case where a fixing device for fixing the squeezing tool in a required squeezed state is provided, the fixing device is not limited to the structure as shown in the above-described embodiment, but may be of various fixing types. .

In the case where the core material of the flexible duct interferes with the squeezing operation while the cross-sectional area of the internal air passage is adjusted by squeezing the flexible tubular body, as shown in FIG. 8, a non-existent portion 20 (or a portion using a soft core material) of the core material 19 is locally provided in the middle portion of the core 5, and the squeezing operation by the squeezing tool 9 is performed at this portion. As shown in (1), the squeezing operation by the squeezing tool 9 may be performed in such a manner that the core member 19 is inclined with respect to the tube core.

In the above-described second embodiment, an example is shown in which the operating end of the squeezing tool faces the inside of the air blowing device. Similarly, the operating end of the squeezing device in the flexible duct connected to the air suction device is also shown. The part may be made to face the device of the air suction device through the duct connection port of the air suction device.

The flexible duct with the air volume adjusting mechanism according to the present invention can be applied not only to air conditioning equipment but also to various fields where ducts requiring air volume adjustment are used.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an air conditioner showing a first embodiment.

FIG. 2 is a longitudinal sectional view of a main part showing the first embodiment,
(A) is a diagram showing a non-squeezed state, and (B) is a diagram showing a squeezed state.

FIG. 3 is a cross-sectional view of a main part showing the first embodiment.

FIG. 4 is a cross-sectional view showing the structure of a fixture.

FIG. 5 is a longitudinal sectional view of a main part showing a second embodiment,
(A) is a diagram showing a non-squeezed state, and (b) is a diagram showing a squeezed state.

FIG. 6 is a side view of a main part showing the third embodiment, and FIG.
Is a diagram showing a non-squeezed state, and (b) is a diagram showing a squeezed state.

FIG. 7 is a side view of a main part showing another embodiment,
(A) is a diagram showing a non-squeezed state, and (b) is a diagram showing a squeezed state.

FIG. 8 is a side view of a main part showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air blow-out apparatus 1a Duct connection port 2 Room for air-conditioning 5 Flexible duct 6 Outer covering material 7 Flexible tubular body 9 Stretcher 9a Operation end of strangler 11 Scale 12 Fixture f Internal air passage

Claims (7)

[Claims] 1. An air flow adjusting mechanism having an air flow adjusting device for adjusting a cross-sectional area of an internal air passage by narrowing a flexible tubular body which is a constituent material of a flexible duct to a reduced diameter. Flexible duct. 2. A configuration in which the squeezing tool is provided between an outer covering material and an inner flexible tubular body in a flexible duct having a double structure, and the inner flexible tubular body is squeezed by the squeezing tool. The flexible duct with an air volume adjusting mechanism according to claim 1, wherein 3. The flexible duct with an air volume adjusting mechanism according to claim 1, wherein the operation end of the squeezing tool extends outside the duct body. 4. The flexible duct with an air volume adjusting mechanism according to claim 1, wherein an operation end of the squeezing tool extends toward an internal air passage of the duct body. 5. The flexible duct with an air volume adjusting mechanism according to claim 1, wherein a scale for reading the amount of squeezing is attached to the squeezing device. 6. The flexible duct with an air volume adjusting mechanism according to claim 1, wherein a fixing device for fixing the restricting device in a required constricted state is attached to the restricting device. 7. An air conditioner using a flexible duct with an air volume adjusting mechanism according to claim 4, wherein the flexible duct is connected to an air blow-out device or an air suction device for a room to be air-conditioned. The operating end of the squeezing tool extended to the air path side,
An air conditioner facing the inside of the device through a duct connection port of the air blowing device or the air suction device.