JPH1062003A - Air quantity regulating mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air quantity regulating mechanism simple in structure, advantageous in cost, capable of easily performing the equal distribution of an air quantity, generating no noises and giving no adverse effect to the surroundings, in relation to an air quantity regulating mechanism for distributing gas for air conditioning to each branch duct in an equalized air quantity in the case where the air-conditioning gas which is allowed to flow to a main duct is distributed to a plurality of outlet ports, chambers, etc., through a plurality of branch ducts. SOLUTION: Gas entering a branch duct 3 through air vents 4a of an air quantity regulating body 4 projected into a main duct 2 at a connection of the main duct 2 with each branch duct 3 is subjected to pressure drop by the choking action of the air vents 4a. Thereby, differences in a flow state in each branch duct 3, which are due to the positional differences of the respective branch ducts 3 in the main duct 3, are reduced through great pressure drop and are resulted in an equal state. Thus, an air quantity to be distributed to each branch duct can be substantially equalized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for directing an air conditioning gas from a duct, a chamber, or the like to one or more air outlets or a chamber closer to a space to be air-conditioned, or one or more suction ports in a room. The present invention relates to an air volume adjusting mechanism that adjusts the air volume of an air conditioning gas when air is passed from one to a duct, a chamber, or the like through one or a plurality of branch ducts or connection members.

[0002]

2. Description of the Related Art Generally, air conditioning air which is intensively sent from one place is sent to a plurality of devices such as an air outlet installed in a room to be air-conditioned and an air chamber above a ceiling. When such a device is inserted, a plurality of branch ducts branched from the main duct are connected to these devices, respectively, and the air ventilated through the branch duct is distributed. In such a combination of the main duct and the branch duct, if a plurality of branch ducts are arranged in the main duct as they are communicated in parallel, the air volume increases in order from the branch duct near the end of the main duct. Conventionally, the cross-sectional area at the connection part of the main duct to which the branch duct is connected is gradually reduced toward the downstream side (the end of the main duct) in order to equalize the distribution amount by adjusting the air flow to each branch duct. Was adopted from. In addition, in order to equalize the distribution amount of each branch duct, a configuration was also adopted in which an orifice for equalizing the flow rate by a pressure drop was provided in the middle of the connection portion of each branch duct in the main duct. . FIG. 11 shows an example of a conventional air volume adjusting mechanism combining a main duct and a branch duct, in which the cross-sectional area of the main duct is changed.
Shown in FIG. 11 is a schematic diagram illustrating the configuration of a conventional air volume adjusting mechanism.

In FIG. 11, a conventional air volume adjusting mechanism 1 is shown.
In the main duct 101, a cross-sectional area of a connecting portion of the branch duct 102 is set such that a plurality of branch ducts 102 are vertically projected from the main duct 101.
Is formed in such a manner that the number of steps is gradually reduced toward the end.

In the above configuration, since the pressure drop occurs as the cross-sectional area of the air ventilated into the main duct 101 decreases, the air volume of the main duct 101 decreases as it goes to the end in the main duct 101. . The balance between the air volume of the main duct 101 reduced toward the end and the air volume distributed to each branch duct 102 can be balanced.
1 can be evenly distributed to each branch duct 102. The distributed air is sent by each branch duct 102 to a downstream device (not shown) such as an air outlet.

On the other hand, FIG. 12 shows an example of a conventional air flow adjusting mechanism in which an orifice is provided in a main duct.
FIG. 12 is a schematic configuration explanatory view of another conventional air volume adjusting mechanism. In FIG. 12, a conventional air volume adjusting mechanism 200 is shown.
Has a configuration in which a plurality of branch ducts 202 are vertically protruded from the main duct 201, and orifices 203 are respectively provided in the main duct 201 between the connecting portions of the branch ducts 202.

In the above-described configuration, the pressure of the air flowing through the main duct 201 is reduced by the orifice 203, so that the air volume decreases toward the end of the main duct 201. Since the air volume of the main duct 201 reduced toward the end and the air volume distributed to each branch duct 202 are balanced, the air in the main duct 201 can be evenly distributed to each branch duct 202.
The distributed air is sent by each branch duct 202 to a downstream device (not shown) such as an air outlet.

[0007] In addition to the air volume adjustment for making the distribution uniform, the air volume has been conventionally adjusted at a single outlet or suction port. In such a conventional air volume adjustment, a shutter (not shown) is provided inside a connecting member that connects a duct or a chamber and an air outlet or a suction port to each other, and an air volume adjustment mechanism of a type that adjusts an opening degree of the shutter is provided. It was common to use.

[0008]

Since the conventional air volume adjusting mechanism is configured as described above, the main duct 101
In the case of a combination in which the branch area is made uniform by changing the cross-sectional area of the main duct 101, the structure of the main duct 101 becomes complicated, the production is difficult, and the production cost rises. Further, since the main duct 101 has a shape in which the sectional area is reduced stepwise in accordance with the number of branch ducts 102, the branch duct 10
When the number of 2 changes, the distribution becomes unbalanced, and it is difficult to divert to another distribution, and there is a problem that there is no versatility.

Also, the type in which the orifice is provided and the branch is made uniform also has a problem that the internal structure of the main duct 201 is complicated, and it is difficult to manufacture. In addition, there is a problem that noise such as wind noise is easily generated in the orifice 203 and becomes a noise source.

Further, the conventional air volume adjusting mechanism at a single outlet or suction port is not only capable of generating wind noise at a shutter, but also having a connecting member which is connected to a duct or a chamber at an angle such as a right angle. It is not an effective solution for the generated air drift, and it is necessary to arrange a separate rectifying grid or resistor, etc. to make a correct airflow distribution, and to eliminate the drift after adjusting the air flow, There is a problem in that the number of parts increases, the assembly takes time, and the cost increases.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a simple structure, is easy to assemble and manufacture, is advantageous in terms of cost, does not generate noise, does not adversely affect the surroundings, and easily has an air volume. It is an object of the present invention to provide an air volume adjusting mechanism capable of performing adjustment and eliminating drift, and achieving uniform branching and proper airflow distribution.

[0012]

The air volume adjusting mechanism according to the present invention is provided with a first ventilation body through which an air conditioning gas flows, and a first ventilation body communicating with the first ventilation body. One or a plurality of second ventilators that ventilate from one ventilator to the space to be air-conditioned or from the space to be air-conditioned to the first ventilator; and A substantially cylindrical body that slides on the inner peripheral surface is formed, one opening end side of the substantially cylindrical body is closed, and a ventilation hole through which gas that is passed through the first ventilation body flows is formed in the peripheral side wall. Or a plurality of holes are provided, and the other open end is communicated with the second ventilation body,
An air flow adjusting member disposed so as to protrude a predetermined length from the connection opening of the ventilation body to the first ventilation body to the inside of the first ventilation body. As described above, in the present invention, the air volume is determined by the opening area of the ventilation hole of the air volume adjusting body protruding into the first ventilation body at the connection portion between the first ventilation body and the second ventilation body. Can be adjusted easily and reliably.
Since the air volume adjusting body having a simple structure can be disposed so as to protrude from the second ventilation body side into the first ventilation body, processing of the first ventilation body can be reduced, and assembly / manufacturing is easy and manufacturing cost can be reduced. Also, the gas passing through the ventilation holes of the air volume adjusting body,
By the pressure drop due to the throttle function of the ventilation holes, the variation of the airflow distribution at each ventilation hole position is rectified through a large pressure drop, so that the airflow can be adjusted and the drift can be eliminated at the same time.

The air volume adjusting mechanism according to the present invention may have a duct or a chamber as the first ventilation body, one end connected to the duct or the chamber, and an outlet or a suction port connected to the other end, if necessary. Said second
A hollow substantially cylindrical connecting member as a ventilation body, wherein the air volume adjusting body is formed of a substantially cylindrical body that is in sliding contact with an inner peripheral surface of the connecting member, and one open end of the substantially cylindrical body While the side is closed, one or a plurality of ventilation holes are provided in the peripheral side wall to allow the gas to be passed through the duct or the chamber, and the other open end is communicated with the connection member. It is arranged inside the duct or chamber so as to be adjustable. As described above, in the present invention, at the connection portion between the duct or the chamber and the connection member, the gas that enters the connection member through the ventilation hole of the air volume adjusting body protruding into the duct or the chamber is subjected to the throttle action of the ventilation hole. As a result, the variation in the airflow distribution in the duct or the chamber is rectified through a large pressure drop, so that the airflow can be adjusted and the drift at the outlet or the like can be eliminated. Further, since the air volume adjusting body having a simple structure can be disposed so as to protrude from the connection member side into the duct or the chamber, the processing of the duct or the chamber is reduced, and the assembling / manufacturing is easy and the cost is reduced.

The air volume adjusting mechanism according to the present invention is provided, if necessary, with a duct or a chamber serving as the first ventilation body, and branched from the duct or the chamber to distribute and ventilate the gas. A plurality of branch ducts as the second ventilation body, wherein the air volume adjusting body is formed of a substantially cylindrical body that is in sliding contact with an inner peripheral wall of the branch duct, and one opening end side of the substantially cylindrical body is closed In addition, one or a plurality of ventilation holes are provided in the peripheral side surface for allowing gas to flow through the duct or the chamber, and the other open end communicates with the branch duct. It is arranged to be adjustable inside. Thus, in the present invention, at the connection between the duct or chamber and each branch duct,
The gas that enters the branch duct through the ventilation holes of the air volume adjustment body that protrudes into the duct or chamber drops in pressure due to the restricting action of the ventilation holes, resulting in a difference in the position of each branch duct in the duct or chamber. The difference in the flow state is reduced through a large pressure drop and converged to the same state, and the air volume distributed in each branch duct can be substantially equalized. In addition, since the air volume adjusting body having a simple structure can be disposed so as to protrude from the branch duct side into the duct or the chamber, processing of the duct or the chamber is reduced, and assembling / manufacturing is easy and cost is reduced.

In the air volume adjusting mechanism according to the present invention, if necessary, the length of the air volume adjusting body that is slidably protruded in the second ventilation body is adjusted, and the air volume adjusting body is moved to a second position. A holder for integrally holding the two ventilation bodies at a predetermined position is provided. As described above, in the present invention, the opening area of the ventilation hole with respect to the first ventilation body is changed by adjusting the amount of protrusion of the air volume adjustment body from the connection opening of the second ventilation body to the first ventilation body, thereby providing the second ventilation body. It is possible to adjust the degree of pressure drop at the ventilation holes of the air volume adjusting body in the two ventilation bodies, and the air volume can be easily adjusted. The distribution can be made uniform more strictly and finely according to the number of branch ducts, the air volume in the ducts or the chamber, and the like. In addition, by making the amount of the airflow adjusting body projecting to the first ventilation body to be 0 and the airflow to be 0, when branching a plurality of branch ducts,
Even if there is a branch duct that is not used, it can cope with the change, the change in the number of branch ducts can be tolerated, and versatility is high.
Furthermore, by disposing an air volume adjusting body having a simple structure in the second ventilation body, the protrusion amount can be adjusted from the second ventilation body side,
It can be easily installed, the cost can be reduced, and the adjustment workability is good.

Further, in the air volume adjusting mechanism according to the present invention, the air volume adjusting body is formed of a material having a sound absorbing property as required. As described above, in the present invention, by forming the air volume adjusting body from a sound absorbing material, it is possible to absorb noise transmitted from the upstream side and to reduce noise such as wind noise generated when gas passes through the ventilation holes. The adjustment body itself absorbs the sound to prevent its propagation to the downstream side, thereby ensuring a sufficient sound absorbing effect and reducing the adverse effects of noise.

Further, the air volume adjusting mechanism according to the present invention is formed of a plate-shaped body or a combination of plate-shaped bodies that are in sliding contact with the air volume adjusted body as required, and the first air-permeable body is separated from the second ventilation body. A communication adjusting body is provided to protrude inside, and the opening area of each ventilation hole is adjusted by adjusting the relative positions of the communication adjusting body and the air volume adjusting body. As described above, in the present invention, by adjusting the relative positions of the air volume adjusting member and the communication adjusting member to change the opening area of each air hole of the air volume adjusting member, it is possible to adjust the degree of pressure drop at the air holes, The air volume can be easily adjusted, especially when multiple branch ducts are branched from the duct or chamber, the air volume distributed to the branch duct should be adjusted more strictly according to the number of branch ducts and the air volume in the duct or chamber. Thus, the distribution can be made uniform. In addition, by closing each ventilation hole of the air volume adjusting body with the communication adjusting body and reducing the air volume to zero, it is possible to cope with a case where a plurality of branch ducts are branched, even if there are unused branch ducts. , And high versatility.

Further, in the air volume adjusting mechanism according to the present invention, the communication adjusting member may be configured such that the communication adjusting member allows the gas flowing through the first ventilation member to flow through a sliding portion of the air adjusting member on the peripheral side wall. One or a plurality of holes are formed to adjust a communication opening area formed by matching the respective ventilation holes of the communication adjustment body and the air volume adjustment body. As described above, in the present invention, the degree of the pressure drop at the ventilation holes can be adjusted by changing the communication opening area of each ventilation hole of the air volume adjustment body and the communication adjustment body, and the air volume can be easily adjusted, and particularly the duct. Or, in the case of branching multiple branch ducts from the chamber, the amount of air distributed to the branch ducts can be adjusted more strictly according to the number of branch ducts and the air volume in the duct or chamber, etc., to achieve uniform distribution it can. In addition, since the air volume can be reduced to zero by eliminating communication between the ventilation holes of the air volume adjusting body and the communication adjusting body, even when a plurality of branch ducts are branched, it is possible to cope with unused branch ducts. Change is acceptable and versatility is high.

The air volume adjusting mechanism according to the present invention adjusts the relative position of the communication adjusting member and the air volume adjusting member by rotating, laterally moving, or vertically moving as necessary. As described above, in the present invention, the communication adjustment body and the air volume adjustment body having a simple structure are arranged in the second ventilation body, and their relative positions can be adjusted from the second ventilation body side.
It can be easily installed, the cost can be reduced, and the adjustment workability is good.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment of the Invention) Hereinafter, an air volume adjusting mechanism according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a main part of an air flow adjusting mechanism according to the present embodiment, FIG. 2 is a schematic configuration diagram of a main part of the air flow adjusting mechanism according to the present embodiment, and FIG. 3 is an air flow adjusting mechanism according to the present embodiment. FIG.

In each of the drawings, the air volume adjusting mechanism 1 according to the present embodiment includes a main duct 2 having a circular cross section as a first ventilation body through which air for air conditioning is passed, and a plurality of branch ducts branched from the main duct 2. A branch duct 3 having a circular cross section as a second ventilation body that is disposed and distributes air to ventilate, and a substantially cylindrical body that is closed at one opening end side, is provided with a plurality of ventilation holes 4a on a peripheral side surface. And an air flow adjusting member 4 slidably disposed in the branch duct 3 and arranged to protrude into the main duct 2 in an adjustable manner.
And a holding member 5 including an elastic locking member 5b, a bolt 5a, and an adjustment knob 5c.

The main duct 2 supplies air conditioning air sent from an air conditioning equipment (not shown) on the upstream side to each branch duct 3.
Are arranged in parallel, one end of which communicates with the main duct 2 and the other end of which is arranged in a room to be air-conditioned, such as an air outlet or an air chamber above the ceiling (not shown). , And sends the air distributed and supplied from the main duct 2 to these devices. The holding duct 5 penetrates the branch duct 3, and the long slot 3 for adjustment is formed with a tooth portion 3 b for locking the holding fixture 5 at a predetermined position.
In this configuration, a is provided.

The air volume adjusting member 4 is made of a glass wool having a sound absorbing property, is formed in a cylindrical body having a diameter which is slidably inscribed in the branch duct 3 and has one open end side closed, and allows air to pass through the peripheral side wall. A plurality of slit-shaped ventilation holes 4a are formed, and bolts 5a forming a part of the holder 5 are mounted outward. This air volume adjusting body 4 is a branch duct 3
While the bolt 5a is passed through the long hole 3a, the closed end is directed toward the main duct 2 and the other open end is communicated with the branch duct 3, and is disposed in the branch duct 3. The locking member 5b and the adjustment knob 5c are fixed to the bolt 5a in a state where the locking member 5b projects from the mouth into the main duct 2 by a predetermined length. The air volume adjusting body 4 is configured to be held at a predetermined position by a locking member 5b that engages with the teeth 3b of the long hole 3a.

Next, the air volume adjusting state of the air volume adjusting mechanism based on the above configuration will be described. First, the adjustment of the amount of the air volume adjustment body 4 protruding inside the main duct 2 is performed by adjusting the tooth portions 3b of the long holes 3a.
Adjusting knob 5c against the elastic force of locking member 5b engaged with
Is slid to change the engagement position of the locking member 5b, and the air volume adjusting body 4 is directly slid. For each branch duct 3 whose distribution amount tends to increase as approaching the end of the main duct 2, the end of the main duct 2 is adjusted at the end of the main duct 2 so that the air flow can be appropriately adjusted in accordance with the flow of air in the main duct 2. As it approaches, the amount of protrusion of the air volume adjusting body 4 into the main duct 2 is reduced, and the opening area of the ventilation hole 4a is reduced. Main duct 2
Is supplied to the branch duct 3 at a connection portion between the main duct 2 and each branch duct 3 through the slit-shaped ventilation hole 4a of the air volume adjusting member 4 protruding into the main duct 2. I do.

At this time, the difference in the flow state in the main duct 2 due to the difference in the connection position of each branch duct 3 in the main duct 2 is caused by the fact that the air flowing through the main duct 2 has a pressure drop due to the throttle action of the ventilation hole 4a. Accordingly, it is reduced and converges to the same state. In addition, the state of the pressure drop at the ventilation holes 4a of the air volume adjusting members 4 in the respective branch ducts 3 is such that the amount of projection of the air volume adjusting members 4 is set in accordance with the flow state in the main duct 2, so that the pressure is reduced. The higher the position is, the larger the descending amount is, and the amount of air distributed in each branch duct 3 can be surely equalized.

When the air passes through the ventilation holes 4a, wind noise may be generated. However, such noise can be absorbed by the air volume adjuster 4 itself made of a sound absorbing material. 3 to the downstream side.

On the other hand, depending on the installation state of the air conditioning system, even if there is a branch duct 3 not used, the air flow adjusting member 4 is slid to eliminate the protrusion into the main duct 2 and shield the ventilation hole 4a on the peripheral side wall. By blocking the communication between the main duct 2 and the branch duct 3 by the shielded ventilation hole 4a and one closed end face of the air volume adjusting body 4, the air flow to the unused branch duct 3 is reduced to zero so that no branch occurs. , And can cope with a change in the number of branches according to the application.

As described above, in the air volume adjusting mechanism according to the present embodiment, due to the pressure drop of the air due to the throttle action of the ventilation hole 4a of the air volume adjusting body 4, the difference in the flow state in the main duct 2 passes through a large pressure drop. It is reduced and converged to an equal state. Therefore, the degree of pressure drop at the ventilation hole 4a can be adjusted by adjusting the amount of protrusion of the air volume adjusting body 4 and changing the opening area of the ventilation hole 4a with respect to the main duct 2, and the air volume distributed to each branch duct 3 can be reduced. The distribution can be easily uniformized by finely adjusting the number of branch ducts 3 and the flow state in the main duct 2.

Further, since the air volume distributed by adjusting the air volume adjusting member 4 can be made zero, even if there is a branch duct 3 which is not used, it is possible to cope with the versatility. Further, the air volume adjusting body 4 is a cylindrical body having a simple structure. The air volume adjusting body 4 is disposed in the branch duct 3 so as to adjust the amount of protrusion in the branch duct 3 and can be easily distributed without processing the main duct 2. It can be installed easily, adjustment work is easy, and the cost can be greatly reduced as a whole.

In the air volume adjusting mechanism according to the embodiment, each of the main duct 2, the branch duct 3, and the air volume adjusting member 4 has a circular cross section. The shape, in particular, the branch duct and the air volume adjusting body, may be a cross-sectional shape having a remarkably large width and a large aspect ratio as shown in FIG.

(Second Embodiment of the Invention) Hereinafter, an air volume adjusting mechanism according to a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. FIG. 5 is a longitudinal sectional view of the air volume adjusting mechanism according to the present embodiment, and FIG. 6 is a schematic configuration diagram of main parts of the air volume adjusting mechanism according to the present embodiment.

In each of the drawings, the air volume adjusting mechanism 1 according to the present embodiment is provided with a chamber 6 serving as a first ventilation body through which air for air conditioning passes, and one end of which is communicated with the chamber 6. A connection member 7 having a circular cross-section as a second ventilation body through which air is ventilated, the air outlet 9 being connected to the other end;
A plurality of ventilation holes 4a are formed in the peripheral side surface, and are slidably disposed in the connection member 7 so as to protrude into the chamber 6 in an adjustable manner. The air volume adjusting member 4 disposed in such a manner as described above, and a holding member 5 including an elastic locking member 5b, a bolt 5a, and an adjusting knob 5c for holding the air volume adjusting member 4 at a predetermined position in the connecting member 7. It is a configuration provided.

The chamber 6 is a rectangular box-shaped body for supplying air conditioning air sent from an air conditioning equipment (not shown) on the upstream side through a duct 10 to an outlet 9 via a connecting member 7. On the other hand, the connecting member 7 has one end connected to the chamber 6 and the other end connected to an outlet 9 provided on the ceiling of a room to be air-conditioned, and supplied from the chamber 6 to the outlet 9. This is a configuration in which the air is sent. The connecting member 7 has a configuration in which a holder 5 penetrates and an adjustment long hole 7a in which a tooth portion 7b for locking the holder 5 at a predetermined position is formed.

The air volume adjusting member 4 is made of glass wool having a sound absorbing property, is formed in a substantially cylindrical body having a diameter which is slidably inscribed on the connecting member 7 and has one opening end side closed, and air is blown on the peripheral side surface. A plurality of slit-shaped ventilation holes 4a are formed, and bolts 5a forming a part of the holder 5 are attached outward. The air volume adjusting body 4 is configured such that one end of the closed end faces the chamber 6 and the other end of the opening communicates with the connection member 7 while the bolt 5a passes through the long hole 7a of the connection member 7 so that the inside of the connection member 7 is formed. The locking member 5b and the adjusting knob 5c are fixed to the bolt 5a while being provided and projecting a predetermined length from the opening end on one end side of the connecting member 7 to the inside of the chamber 6. The air volume adjusting body 4 is configured to be held at a predetermined position by a locking member 5b that engages with the tooth portion 7b of the long hole 7a.

Next, the air volume adjusting state of the air volume adjusting mechanism based on the above configuration will be described. First, the adjustment of the amount of the air volume adjusting body 4 protruding into the chamber 6 is performed by adjusting the tooth portions 7 of the long holes 7a.
b of the adjusting knob 5 against the elastic force of the locking member 5b engaged with the adjusting knob 5b.
c, by sliding the air volume adjusting body 4 directly while changing the engagement position of the locking member 5b, and setting the amount of projection in accordance with the flow state in the chamber 6 so as to obtain an appropriate air volume. The opening area of 4a is adjusted.

The air supplied through the chamber 6 is
At the connection portion between the chamber 6 and each connection member 7, the air flow is adjusted through the slit-shaped ventilation holes 4 a of the air flow adjustment member 4 protruding into the chamber 6 and enters the connection member 7. At this time, even if the airflow distribution from the inside of the chamber 6 to the connection member 7 is deviated depending on the connection position and connection direction of the chamber 6 and the connection member 7, the air is reduced in pressure by the throttle action of the ventilation hole 4 a. The airflow is rectified, the airflow distribution becomes uniform, reaches the outlet 9, and is blown into the room.

When air passes through the ventilation holes 4a, wind noise may be generated. However, such noise can be absorbed by the air volume adjusting member 4 itself made of a sound absorbing material, and the connecting member can be used. 7 from the downstream side.

On the other hand, when the air outlet 9 is not used depending on the arrangement of the air conditioning system, the air flow adjusting member 4 is slid to eliminate the protrusion into the chamber 6 and to block the ventilation hole 4a on the peripheral side wall. The chamber 6 and the connecting member 7 are closed by the closed ventilation hole 4 a and one closed end face of the air volume adjusting body 4.
By blocking the communication with the air outlet, the air volume to the air outlet 9 can be reduced to zero, and it is possible to cope with a change in use.

As described above, in the air volume adjusting mechanism according to the present embodiment, the opening amount of the ventilation hole 4 a with respect to the chamber 6 is changed by adjusting the amount of protrusion of the air volume adjusting body 4, and
Can be easily and finely adjusted in accordance with the flow state in the outlet 9 and the chamber 6 and the like. Further, due to the pressure drop of the air due to the restricting action of the ventilation holes 4a of the air volume adjusting body 4, the variation of the air flow distribution in the chamber 6 can be rectified, and there is no need to provide a separate rectifying grid or the like.
In addition to reducing the number of parts, the air volume adjusting body 4 can be easily assembled and arranged without processing the chamber 6, so that it is possible to reduce the labor for manufacturing and to greatly reduce the cost as a whole.

In the air volume adjusting mechanism according to the above embodiment, one connecting member 7 is communicated with the chamber 6 to adjust the air volume to one outlet 9. The connecting members 7 can be arranged so as to be branched and ventilated to each other, and the distribution amount to each connecting member 7 can be made uniform by the pressure drop at the ventilation hole 4a in each air volume adjusting body 4. .

In the air volume adjusting mechanism according to each of the first and second embodiments, the air volume adjusting body 4 is made of glass wool having a sound absorbing property. A configuration using a material can also be used. In particular, when a metal is used, it is possible to adopt a configuration in which a synthetic resin coating is applied in order to avoid generation of wind noise from the ventilation holes 4a where a cut surface is generated. In addition, the air volume adjusting body 4
The ventilation holes 4a are vertically slit-shaped,
In addition to this, it is also possible to adopt a configuration in which a slit shape in a lateral direction or an oblique direction or a shape other than the slit shape such as a circle or a rectangle is formed.

In the air volume adjusting mechanism according to each of the first and second embodiments, the holder 5 of the air volume adjusting body 4
Is provided with the locking member 5b and the adjustment knob 5c fixed to the air volume adjusting body 4 with bolts 5a, and the locking member 5b is detachably engaged with the branch duct 3 or the tooth portion of the long hole of the connecting member 7. Although the configuration is such that the air volume adjusting body 4 is held at a predetermined position by combining the same, other configurations such as a rack 51 formed on the outer peripheral surface of the air volume adjusting body 4 and the branch duct 3 as shown in FIG. A pinion gear 52 which is disposed through the peripheral side wall of the bracket and is rotatably supported by the branch duct 3 in mesh with the rack 51; and an adjustment lever 53 for rotating the pinion gear 52. A configuration in which the pinion gear 52 is rotated by 53 and the rack 51 is moved to slide the air volume adjusting body 4 is possible, and the air volume can be adjusted more easily. As shown in FIG. 8, a nut 54 fixed to the air volume adjusting body 4, a detent 55 disposed to penetrate the air volume adjusting body 4 from the branch duct 3, and one end is screwed to the nut 54. A long screw rod 57 whose other end is rotatably held by a support plate 56 provided at the tip of the branch duct 3. By turning the screw rod 57 from the outlet side, it is screwed into this. The air flow adjusting body 4 can be slid with respect to the branch duct 3 integrally with the nut 54 to adjust the amount of protrusion, so that the worker can work from inside the room, greatly improving workability. I do.

In the air volume adjusting mechanisms according to the first and second embodiments, the air volume is adjusted by sliding the air volume adjusting member 4 to adjust the opening area of the ventilation hole 4a. However, as shown in FIG. 9 and FIG. 10, it is possible to adopt a configuration in which the communication amount adjusting member 8 slidably contacting the outside or inside of the air amount adjusting member 4 is slid to adjust the air amount. For example, as shown in FIG. 9 (A), a communication adjusting member 8 having a plate-like body formed in a cylindrical shape is slidably contacted with the air volume adjusting member 4 and slid in the axial direction with respect to the air volume adjusting member 4 to adjust the air volume. A configuration in which the opening area of the ventilation hole 4a of the body 4 is adjusted can be adopted. Also, as shown in FIG. 9 (B), a ventilation hole 8a is formed in the communication adjusting body 8, and the communication opening area of each of the ventilation holes 4a, 8a is adjusted by rotating with respect to the air volume adjusting body 4, thereby adjusting the air volume. It is also possible to adopt a configuration for performing this. Further, as shown in FIG. 10, a plate-like body is combined with a U-shaped cross section corresponding to the rectangular air volume adjusting body 4 to form a communication adjusting body 8 having a ventilation hole 8a formed therein. 8 may be slidably contacted with the air volume adjusting body and slid laterally to adjust the communication opening area of each of the ventilation holes 4a and 8a to adjust the air volume.

[0044]

As described above, according to the present invention, the air flow rate is determined by the opening area of the ventilation hole of the air flow rate adjusting body projecting into the first ventilation body at the connection between the first ventilation body and the second ventilation body. Thus, the air volume can be easily and reliably adjusted, and the air volume adjusting body having a simple structure can be disposed so as to protrude from the second ventilation body side into the first ventilation body, thereby reducing the processing of the first ventilation body. In addition, there is an effect that the assembling and manufacturing are easy and the manufacturing cost can be suppressed. In addition, the gas passing through the ventilation holes of the air volume adjustment body has a pressure drop due to the throttling action of the ventilation holes. At the same time, there is an effect that the drift can be eliminated. Further, in the present invention, at the connecting portion between the duct or the chamber and the connecting member, the gas entering the connecting member through the ventilation hole of the air volume adjusting body protruded into the duct or the chamber is caused by the throttle action of the ventilation hole. Due to the pressure drop, the variation of the airflow distribution in the duct or the chamber is rectified through a large pressure drop, which has the effect of adjusting the air volume and eliminating the drift at the outlet and the like at the same time. Also,
Since the air volume adjusting body having a simple structure can be disposed so as to protrude from the connection member side into the duct or the chamber, the processing of the duct or the chamber is reduced, and there is an effect that the assembling / manufacturing is easy and the cost is greatly reduced. Further, in the present invention, at the connection portion between the duct or chamber and each branch duct, gas entering the branch duct through the ventilation hole of the air volume adjusting body protruded into the duct or chamber is subjected to a throttle action of the ventilation hole. As a result, the difference in the flow state due to the difference in the position of each branch duct in the duct or chamber is reduced through a large pressure drop and converges to the same state, and the air volume distributed in each branch duct Can be substantially equalized. In addition, since the air volume adjusting body with a simple structure can be arranged so as to protrude from the branch duct side into the duct or chamber, the processing of the duct or chamber is reduced, and the effect of easy assembly and manufacture and large cost reduction can be achieved. Have. Further, in the present invention, by adjusting the amount of protrusion of the air volume adjusting body from the connection opening of the second ventilation body to the first ventilation body to change the opening area of the ventilation hole for the first ventilation body, The degree of pressure drop at the ventilation holes of the airflow regulating body in the ventilation body can be adjusted, and the airflow can be easily adjusted, especially when multiple branch ducts are branched from the duct or chamber, the airflow distributed to the branch duct is divided. There is an effect that the distribution can be made uniform by finely and finely adjusting the number according to the number of ducts, the amount of air in the duct or the chamber, and the like. In addition, by making the amount of the airflow adjusting body projecting to the first ventilation body to be 0 and the airflow to be 0, when branching a plurality of branch ducts,
Even if there is a branch duct that is not used, it is possible to cope with the change, the change in the number of branch ducts can be tolerated, and there is an effect that versatility is high. Furthermore, since the air volume adjusting body having a simple structure is arranged in the second ventilation body and the amount of protrusion can be adjusted from the second ventilation body side, it can be easily arranged, the cost can be reduced, and the workability of the adjustment is good. Has an effect. Also,
In the present invention, the air volume adjusting body is made of a sound absorbing material, so that the noise transmitted from the upstream side can be absorbed and noise such as wind noise generated when gas passes through the ventilation holes can be reduced by the air volume adjusting body itself. Thus, it is possible to prevent sound from being propagated downstream and secure a sufficient sound absorbing effect, thereby reducing the adverse effects of noise. Further, in the present invention, by adjusting the relative positions of the air volume adjusting body and the communication adjusting body to change the opening area of each ventilation hole of the air volume adjusting body, it is possible to adjust the degree of the pressure drop at the air ventilation hole, so that the air volume can be adjusted. In particular, in the case of branching multiple branch ducts from a duct or chamber, adjust the air volume distributed to the branch duct more precisely in accordance with the number of branch ducts and the air volume in the duct or chamber. This has the effect that the distribution can be made uniform. In addition, by closing each ventilation hole of the air volume adjusting body with the communication adjusting body and reducing the air volume to zero, it is possible to cope with a case where a plurality of branch ducts are branched, even if there are unused branch ducts. Has the effect of being highly versatile. Further, in the present invention, by changing the communication opening area of each ventilation hole of the air volume adjustment body and the communication adjustment body, the degree of pressure drop at the ventilation hole can be adjusted, and the air volume can be easily adjusted, particularly in a duct or In the case of branching a plurality of branch ducts from the chamber, the amount of air distributed to the branch ducts can be adjusted more strictly in accordance with the number of branch ducts, the amount of air in the duct or the chamber, and the like, thereby achieving uniform distribution. It has the effect of. In addition, by eliminating the communication of the ventilation holes of the air volume adjusting body and the communication adjusting body, the air volume can be reduced to zero, so that when a plurality of branch ducts are branched, even if there are unused branch ducts, the number of branch ducts can be dealt with. Has the effect of being highly versatile. Further, in the present invention, the communication adjusting body and the air volume adjusting body having a simple structure are arranged in the second ventilation body, and the relative positions thereof can be adjusted from the second ventilation body side, so that the communication adjusting body and the air volume adjusting body can be easily arranged, and the cost can be reduced. This has the effect of being cheap and of having good workability in adjustment.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an air volume adjusting mechanism according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a main part of an air volume adjusting mechanism according to the first embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of the air volume adjusting mechanism according to the first embodiment of the present invention.

FIG. 4A is a schematic perspective view of a main part of an air volume adjusting mechanism according to another embodiment of the present invention. (B) is a longitudinal sectional view of an air volume adjusting mechanism according to another embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of an air volume adjusting mechanism according to a second embodiment of the present invention.

FIG. 6 is a schematic diagram of a main part of an air volume adjusting mechanism according to the first embodiment of the present invention.

FIG. 7 is a schematic configuration diagram of a holder of an air volume adjusting mechanism according to another embodiment of the present invention.

FIG. 8 is a schematic configuration diagram of an air volume adjusting mechanism according to another embodiment of the present invention.

FIG. 9A is a schematic configuration diagram of an air volume adjusting body of an air volume adjusting mechanism according to another embodiment of the present invention. (B) is a schematic configuration diagram of an air volume adjusting body of an air volume adjusting mechanism according to another embodiment of the present invention.

FIG. 10 is a schematic configuration diagram of an air volume adjusting body of an air volume adjusting mechanism according to another embodiment of the present invention.

FIG. 11 is a schematic diagram illustrating the configuration of a conventional air volume adjusting mechanism.

FIG. 12 is a schematic configuration explanatory view of another conventional air volume adjusting mechanism.

[Explanation of symbols]

 1, 100, 200 Air volume adjusting mechanism 2, 101, 201 Main duct 3, 102, 202 Branch duct 3a Long hole 3b Teeth 4 Air volume adjusting body 4a Ventilation hole 5 Holder 5a Bolt 5b Locking member 5c Adjustment knob 6 Chamber 7 Connection member 7a Long hole 7b Tooth portion 8 Communication adjusting body 8a Ventilation hole 9 Outlet 10 Duct 51 Rack 52 Pinion gear 53 Adjusting lever 54 Nut 55 Detent 56 Support plate 57 Screw rod 203 Orifice

Claims (8)

[Claims] 1. A first ventilation body through which air conditioning gas is passed, and a first ventilation body is provided in communication with the first ventilation body, and the gas is directed from the first ventilation body to a space to be air-conditioned. Or one or a plurality of second ventilation bodies that ventilate from the space side to be air-conditioned to the first ventilation body, and a substantially cylindrical body that slides on the inner peripheral surface of the second ventilation body. , While one open end side of the substantially cylindrical body is closed,
One or a plurality of ventilation holes through which the gas passed through the first ventilation body flows are formed in the peripheral side wall, and the other opening end side is the second ventilation hole.
An air flow adjusting member which is provided in communication with the ventilation body, and which is disposed so as to protrude by a predetermined length from the connection opening of the second ventilation body to the first ventilation body to the inside of the first ventilation body. mechanism. 2. The air volume adjusting mechanism according to claim 1, wherein a duct or a chamber serving as the first ventilation body has one end connected to the duct or the chamber, and an outlet or a suction port connected to the other end. A hollow substantially cylindrical connecting member as the second ventilation body, wherein the air volume adjusting body is formed of a substantially cylindrical body that slides on an inner peripheral surface of the connecting member. One opening end side is closed, and one or a plurality of ventilation holes through which gas flowing through the duct or the chamber flows are formed in the peripheral side wall, and the other opening end side communicates with the connection member. An air flow adjusting mechanism, which is arranged to be adjustable inside a duct or a chamber from an opening portion of the air flow. 3. The air volume adjusting mechanism according to claim 1, wherein a duct or a chamber serving as the first ventilation member is provided, and the branch is provided from the duct or the chamber, and the gas is distributed and ventilated. A plurality of branch ducts as a second ventilation body, wherein the air volume adjusting body is formed of a substantially cylindrical body that is in sliding contact with the inner peripheral wall of the branch duct, and one opening end side of the substantially cylindrical body is closed. At the same time, one or a plurality of ventilation holes are provided in the peripheral side surface to allow the gas to be passed through the duct or chamber, and the other open end communicates with the branch duct. An air volume adjusting mechanism, which is disposed inside so as to be adjustable. 4. The air volume adjusting mechanism according to claim 1, wherein a length of the air volume adjusting body slidably protruding in the second ventilation body is adjusted, and the air volume is adjusted. An air volume adjusting mechanism, wherein a holder for integrally holding the adjusting body at a predetermined position with respect to the second ventilation body is provided. 5. The air volume adjusting mechanism according to claim 1, wherein the air volume adjusting body is formed of a material having a sound absorbing property. 6. The air volume adjusting mechanism according to claim 1, wherein the air volume adjusting mechanism is formed of a plate-shaped body or a combination of plate-shaped bodies that slidably contact the air volume adjusted body. An air volume adjusting mechanism, comprising: a communication adjusting member protrudingly disposed inside one ventilation body, wherein an opening area of each ventilation hole is adjusted by adjusting a relative position between the communication adjusting member and the air volume adjusting member. 7. The air volume adjusting mechanism according to claim 6, wherein the communication adjusting member is configured to allow a gas to be passed through the first ventilation member to flow through a portion slidably attached to a peripheral side wall of the air volume adjusting member. And a communication opening region formed by matching the ventilation holes of the communication adjustment member and the air flow adjustment member. 8. The air volume adjusting mechanism according to claim 6, wherein a relative position between the communication adjusting body and the air volume adjusting body is rotationally moved.
An air volume adjusting mechanism characterized in that the air volume is adjusted by lateral movement or vertical movement.