Air amount adjusting device

Abstract

To provide an air amount adjusting device which solves the problem that a conventional technology has, that is, to be able to reduce a pressure loss when an opening of a duct ventilation part is made to be maximum compared to the conventional technology.SOLUTION: An air amount adjusting device is the device which adjusts the amount of the air flowing in a duct and it includes: a "door body" for opening / closing a ventilation part of the duct; "control means" for moving the door body; and a "storage body" for storing the door body. When the door body moves so as to be sent out from the storage body by the control means, the opening of the ventilation part decreases, and, reversely, when the door body moves so as to be drawn into the storage body by the control means, the opening of the ventilation part increases. Then, when the door body is stored in the storage body, the ventilation part is fully opened.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a technology for adjusting the amount of air in a duct, and more specifically, to an air volume adjustment device that does not leave any obstructions that would cause pressure loss when the duct ventilation section is opened to its maximum opening. [Background technology]

[0002] In order to cool each room in a building, ventilation and air conditioning equipment is sometimes installed. For example, relatively large buildings such as the reactor building and turbine building at a nuclear power plant have many rooms, and each room is equipped with various equipment, which generates a considerable amount of heat. Therefore, ventilation and air conditioning equipment is installed to keep each room at an appropriate temperature, that is, to remove the heat generated by the equipment.

[0003] Ventilation and air conditioning systems can be broadly divided into single-fan and central-fan systems. With the single-fan system, individual fans and exhaust fans are installed in each area (for example, each room) to adjust the temperature and air volume for each area. On the other hand, with the central-fan system, fans are installed in a machine room or similar location to adjust the temperature and air volume for multiple rooms or the entire building. With this central-fan system, air sent from the fan is delivered to each room through an intake duct, and is exhausted from each room through an exhaust duct. For this reason, intake and exhaust ducts are installed throughout the building, and intake and exhaust vents are provided in various places.

[0004] When installing ventilation and air conditioning equipment in a building, it is necessary to calculate the motor capacity of the blower and exhaust fan, and to calculate the motor capacity, it is necessary to calculate the resistance of the entire duct system. The resistance value of the entire duct system is determined by the sum of the resistance values ​​of each component that makes up the duct system, such as the louvers, air filters, straight duct sections, bends, and branches. The higher the resistance value, the larger the motor capacity of the blower and exhaust fan must be prepared, which increases the initial cost and running cost. In other words, in order to save energy and reduce costs in ventilation and air conditioning equipment (especially the blower and exhaust fan), it is necessary to devise a way to reduce the resistance value of the duct system.

[0005] As mentioned above, the temperature and air volume in each room are adjusted by the air flowing through the intake and exhaust ducts. It is also common to install a "volume damper" in the duct path to adjust the air volume. When the air pressure being sent to each room is high and the air volume is excessive, the volume damper reduces the opening of the duct ventilation section to adjust the pressure (reducing the air volume).

[0006] Incidentally, conventional volume dampers have a vane structure as disclosed in Patent Document 1, and the mainstream type adjusts the opening degree of the damper's ventilation section, i.e., the amount of air flow, by opening and closing the vanes. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2017-116182 A Summary of the Invention [Problem to be solved by the invention]

[0008] As mentioned above, in order to reduce the energy and cost of ventilation and air conditioning equipment, it is necessary to reduce the resistance value of the duct system. However, in conventional volume dampers such as those in Patent Document 1, the opening degree of the duct ventilation section is adjusted by opening and closing the blades, so even if the duct ventilation section is opened to the maximum (maximum ventilation), multiple blades and the blade supports that link these blades remain in the duct ventilation section. In other words, in conventional volume dampers, the blades and blade supports, which are resistance objects that obstruct the flow of air, are always present in the duct ventilation section, which hinders the energy and cost savings of ventilation and air conditioning equipment.

[0009] The object of the present invention is to solve the problems associated with the prior art, that is, to provide an air volume control device that can reduce pressure loss when the duct ventilation section is opened to its maximum opening compared to the prior art. [Means for solving the problem]

[0010] The present invention focuses on the fact that by storing the "door body" for adjusting the opening degree of the duct ventilation section in a "storage body," no resisting objects such as vanes remain when the duct ventilation section is opened to its maximum opening degree, and is based on an unprecedented idea.

[0011] The airflow control device of the present invention is a device that adjusts the amount of air flowing through a duct, and is equipped with a "door" that opens and closes the ventilation section of the duct, a "control means" that moves the door, and a "storage body" that stores the door. When the door is moved by the control means so that the ventilation is sent out of the storage body, the opening degree of the ventilation section decreases, and conversely, when the door is moved by the control means so that the ventilation is drawn into the storage body, the opening degree of the ventilation section increases. When the door is completely stored in the storage body, the ventilation section is fully open.

[0012] The air flow regulator of the present invention may also be provided with a door body in which two or more box-shaped "split door bodies" are connected. Of the adjacent split door bodies, one split door body that is closer to the storage body is housed inside the other split door body. In this case, when the control means moves the other split door body so as to be sent out from the inside of the split door body, the opening degree of the vent decreases, and when the control means moves the other split door body so as to be drawn into the inside of the split door body, the opening degree of the vent increases.

[0013] The air volume adjusting device of the present invention may also be provided with a "winding means" as a control means. The winding means that rotates around an axis is provided in the housing, and in this case the door body is a deformable plate-like member. When the winding means rotates in one direction, the door body is wound up by the winding means, and when the winding means rotates in the opposite direction, the door body is let out from the winding means.

[0014] The air volume regulator of the present invention may be configured so that the storage body is provided either above or below the ventilation section (or both). In this case, the door body is moved up and down by the control means.

[0015] The air flow regulator of the present invention may be configured so that the housing is provided on both the left and right sides of the ventilation section, or on either the left or right side. In this case, the door body is moved left or right by the control means. Effect of the Invention

[0016] The air flow rate adjusting device of the present invention has the following effects. (1) The pressure loss when the duct ventilation section is opened to its maximum extent can be reduced compared to the conventional technology. (2) The pressure loss when the duct ventilation section is opened to its maximum extent is reduced, which results in reduced initial and running costs for the ventilation and air conditioning equipment (especially the blower and exhaust fan). (3) In addition, the pressure loss when the duct ventilation section is opened to its maximum extent is reduced, which contributes to energy savings. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2A is a longitudinal sectional view showing an air flow control device of the present invention attached to a portion of a duct, and FIG. 2B is a transverse sectional view showing an air flow control device of the present invention attached to a portion of a duct. [Diagram 2] 1A is a cross-sectional view showing the state in which the ventilation section is "fully open" by the door body, FIG. 1B is a cross-sectional view showing the state in which the opening degree of the ventilation section is reduced by the door body, and FIG. 1C is a cross-sectional view showing the state in which the ventilation section is "fully closed" by the door body. [Diagram 3] FIG. 3(a) is a cross-sectional view showing the split air volume control device in a fully closed state, and FIG. 3(b) is a vertical cross-sectional view showing the split air volume control device in a fully closed state. [Figure 4] (a) is a front view showing a schematic of all the split door bodies protruding, (b) is a front view showing a schematic of some of the split door bodies protruding, and (c) is a plan view showing a schematic of the storage space of the split door bodies. [Diagram 5] FIG. 13 is a cross-sectional view showing the vent partially closed by the split door. [Figure 6] 1A is a cross-sectional view showing the ventilation section VN in a fully open state by the split door body, and FIG. 1B is a vertical cross-sectional view showing the ventilation section VN in a fully open state by the split door body. [Figure 7] 11 is a cross-sectional view showing a split-type air volume control device in which housings are arranged above and below a ventilation section. FIG. [Figure 8] 1A is a cross-sectional view explaining the operation of a split door body divided into upper and lower halves, and FIG. 1B is a vertical cross-sectional view explaining the operation of a split door body divided into upper and lower halves. [Figure 9] 11 is a cross-sectional view showing a split-type air volume control device in which a housing is disposed on each of the right and left sides of a ventilation section. FIG. [Figure 10] 1A is a cross-sectional view explaining the operation of a split door body divided into left and right halves, and FIG. 1B is a vertical cross-sectional view explaining the operation of the split door body divided into left and right halves. [Figure 11]1A is a longitudinal sectional view showing a schematic view of a roll-up type air volume control device, FIG. 1B is a transverse sectional view showing a schematic view of a roll-up type air volume control device, and FIG. 1C is a plan view showing a schematic view of a roll-up door body and a guide rail. [Figure 12] 1A is a cross-sectional view showing a schematic diagram of an air flow control device of the present invention installed in a circular duct, and FIG. 1B is a cross-sectional view showing a schematic diagram of a roll-up door body for an air flow control device installed in a circular duct. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] An example of an embodiment of the air flow control device of the present invention will be described with reference to the drawings. The air flow control device of the present invention can adjust the air flow as desired, but it can also be used as a check damper for blocking the air path, a fire damper, or various other devices.

[0019] 1.Overview 1 is a diagram showing an air flow control device 100 of the present invention attached to a part of a duct DC, (a) being its longitudinal cross-sectional view, and (b) being its transverse cross-sectional view. Normally, a duct DC is a so-called long structure in which the axial dimension is greater than the cross-sectional dimension. Therefore, for convenience, the axial direction of the duct DC will be referred to as the "longitudinal direction" and the direction perpendicular to the longitudinal direction will be referred to as the "transverse direction".

[0020] As shown in FIG. 1, the air volume control device 100 of the present invention is configured to include a door body 200 that is placed in a continuous hole (hereinafter referred to as the "ventilation section VN") through which air flows within a duct DC, a storage body 300 that can store this door body 200, and a control means described below, and can also be configured to further include a frame body 400.

[0021] The air flow rate adjusting device 100 adjusts the air flow rate by adjusting the opening of the ventilation section VN, and one of its technical features is that no "obstructions" that would cause pressure loss when the ventilation section VN is opened to its maximum opening are left in the ventilation section VN. As described above, in conventional volume dampers, even when the ventilation section VN is opened to its maximum opening, multiple blades and blade supports remain in the ventilation section VN, and these blades and the like act as obstructions, causing pressure loss. In contrast, the air flow rate adjusting device 100 of the present invention does not cause pressure loss (or the pressure loss is greatly reduced) at least when the ventilation section VN is opened to its maximum opening, which allows for cost and energy savings.

[0022] The air volume regulator 100 adjusts the opening degree of the ventilation section VN by moving the door body 200 so as to expand and contract within the ventilation section VN. More specifically, when the door body 200 is moved by the control means so as to be sent out from the storage body 300, the opening degree of the ventilation section VN decreases, and conversely, when the door body 200 is moved by the control means so as to be drawn into the storage body 300, the opening degree of the ventilation section VN increases. For example, in FIG. 2(a), all the door bodies 200 are stored in the storage body 300, so that the ventilation section VN is in a "fully open" state with no obstructions. In FIG. 2(b), the door body 200 is sent out so as to extend from the storage body 300 (downward in the figure), so that the opening degree of the ventilation section VN decreases, and in FIG. 2(c), the door body 200 is further sent out, so that the ventilation section VN is sealed and in a "fully closed" state. 2(b), the side closer to the storage body 300 is referred to as the "starting side," the side farther from the storage body 300 is referred to as the "tip side," and the axial direction connecting the starting side and the tip side is referred to as the "extension direction." In other words, when the door body 200 moves to the "tip side" in the extension direction, the opening degree of the ventilation section VN decreases, and when the door body 200 moves to the "starting side" in the extension direction, the opening degree of the ventilation section VN increases.

[0023] As described above, the air volume adjustment device 100 is configured so as not to leave any obstruction inside the ventilation section VN when the ventilation section VN is fully opened. For this reason, the storage body 300 is installed outside the ventilation section VN, for example, above the ventilation section VN in FIG.

[0024] The frame 400 is disposed in the middle of the ventilation section VN when viewed in the longitudinal direction, in other words, it forms a part of the ventilation section VN, although it is an extremely short section. The frame 400 may be configured to match the cross-sectional shape of the duct DC. For example, the frame 400 shown in FIG. 1(b) is rectangular, consisting of an upper frame member 410, a lower frame member 420, a right frame member 430, and a left frame member 440, so as to match the cross-sectional shape of the rectangular duct DC. When attaching the frame 400 to the duct DC, it is preferable to use flanges provided on each frame member, such as the upper frame member 410. Note that, if the storage body 300 can be installed in the duct DC, and the door body 200 can be inserted and removed from the ventilation section VN through a slit portion provided in the duct DC, the air volume adjustment device 100 does not necessarily need to include the frame 400. However, in this case, it is necessary to provide an airtight structure in which air does not leak from the slit portion, for example by covering the slit portion of the duct DC with the storage body 300.

[0025] 2.Air volume adjustment device The air volume adjustment device 100 of the present invention will be described in detail. The air volume adjustment device 100 of the present invention can be broadly divided into one in which the door body 200 is composed of multiple members (hereinafter referred to as "split door body 210") (hereinafter referred to as "split type air volume adjustment device 100S") and one in which the deformable door body 200 is rolled up (hereinafter referred to as "roll-up type air volume adjustment device 100W"). The split type air volume adjustment device 100S and the roll-up type air volume adjustment device 100W will be described below.

[0026] (Split type air volume adjustment device) Fig. 3(a) is a cross-sectional view showing the split air volume control device 100S in a state where the ventilation section VN is fully closed (hereinafter simply referred to as the "fully closed state"), and Fig. 3(b) is a vertical cross-sectional view showing the split air volume control device 100S in a state where the ventilation section VN is fully open (hereinafter simply referred to as the "fully open state"). As described above, the door body 200 constituting the split air volume control device 100S (hereinafter particularly referred to as the "split door body 200S") is made up of two or more split door bodies 210. For example, in Fig. 3(b), the split door body 200S is made up of five split door bodies 210 (a first split door body 211, a second split door body 212, a third split door body 213, a fourth split door body 214, and a fifth split door body 215).

[0027] 4(a), the split door body 210 has a transverse dimension that is approximately the same as the length in the transverse direction of the ventilation section VN (hereinafter referred to as the "transverse dimension"), and its length in the expansion / contraction direction (hereinafter referred to as the "width dimension") is shorter than the transverse dimension. The split door body 200S is formed by arranging multiple split door bodies 210 (five in this figure) so that they are lined up in the expansion / contraction direction.

[0028] As shown in FIG. 4(c), the split door body 210 is box-shaped and has an internal storage space. This storage space is for storing the split door body 210 adjacent to the tip side (lower side in the figure). That is, the split door body 210 has a storage space large enough to store the split door body 210 adjacent to the tip side. However, although the cross-sectional dimension of the storage space of the split door body 210 adjacent to the starting point side (e.g., the third split door body 213) needs to be longer than the cross-sectional dimension of the split door body 210 adjacent to the tip side (e.g., the fourth split door body 214), the width dimension of the storage space on the starting point side does not necessarily need to be longer than the width dimension of the split door body 210 on the tip side (of course, it may be longer). In that case, even if the split door body 210 on the tip side is stored in the storage space on the starting point side, a part of the split door body 210 will protrude from the storage space. In addition, the divided door bodies 210 adjacent in the extension / retraction direction can be connected to each other by a rope or other material, and a stopper mechanism can be provided to prevent the divided door bodies 210 from falling out of the storage space.

[0029] The split door body 200S is configured using a telescopic (registered trademark) pick structure (so-called nesting structure) like a crane boom or a surveying box scale (staff), and each split door body 210 extends by being sent out from the storage space on the starting point side, and shortens by being stored in the storage space on the starting point side. For example, the split door body 200S shown in Fig. 4(a) is fully extended by all the split door bodies 210 protruding from the storage space on the starting point side, and the split door body 200S shown in Fig. 4(b) is partially extended by only the fourth split door body 214 and the fifth split door body 215 protruding from the storage space on the starting point side.

[0030] A control means 500 is used to extend and retract the split door body 200S. For example, the control means 500 shown in FIG. 3 is configured to include a rotating body (such as a drum or a shaft), a handle for rotating the rotating body, a lead material 500L, and the like. The lead material 500L is wound around the rotating body, and one end (the lower end in the figure) is connected to the split door body 210 at the most distal end (the fifth split door body 215 in the figure). Therefore, as the lead material 500L in this case, a wire rope, a resin rope, or a piano wire may be used. The lead material 500L may be disposed inside the split door body 210 (so as to pass through the storage space), or may be disposed outside the split door body 210. The lead material 500L can be wound around the rotating body by rotating the handle in one direction, and the lead material 500L can be unwound from the rotating body by rotating the handle in the other direction. In this way, the rotating body can be rotated by what is essentially a manual operation by an operator, or, of course, the rotating body can be rotated by utilizing the power of an electric motor or the like.

[0031] Hereinafter, a procedure for changing the ventilation section VN from a fully closed state to a fully open state will be described with reference to Figures 3, 5, and 6. Figure 5 is a cross-sectional view showing the ventilation section VN partially closed by the split door body 200S, and Figure 6 is a cross-sectional view and a vertical cross-sectional view showing the ventilation section VN in the fully open state.

[0032] When all the divided doors 210 protrude from the storage space on the starting point side, the ventilation section VN is in a fully closed state as shown in Fig. 3. When the control means 500 winds up the lead material 500L from this fully closed state, the fifth divided door body 215 on the most distal end side rises and is stored in the storage space of the fourth divided door body 214 on the starting point side. When the control means 500 further winds up the lead material 500L from that state, both the fourth divided door body 214 and the fifth divided door body 215 rise, and the fourth divided door body 214 and the fifth divided door body 215 are stored in the storage space of the third divided door body 213 on the starting point side as shown in Fig. 5. As the control means 500 winds up the lead material 500L in this manner, the tip side split door body 210 is accommodated together in the storage space related to the starting side split door body 210, and eventually all of the integrated split door bodies 210 are accommodated in the storage body 300, thereby bringing the ventilation section VN into the fully open state shown in Figure 6.

[0033] On the other hand, the procedure for changing the ventilation section VN from a fully open state to a fully closed state is as follows. When all the divided door bodies 210 are accommodated in the storage body 300, the ventilation section VN is in a fully open state. When the control means 500 unwinds the lead material 500L from this fully open state, the first divided door body 211 descends with the other divided door bodies 210 (the second divided door body 212 to the fifth divided door body 215) accommodated in the storage space of the first divided door body 211. When the control means 500 continues to unwind the lead material 500L, the first divided door body 211 is locked at a predetermined position (such as the upper frame material 410 or a part of the storage body 300) to restrict its descent, and the second divided door body 212 descends to overhang from the storage space of the first divided door body 211 with the other divided door bodies 210 (the third divided door body 213 to the fifth divided door body 215) accommodated therein. Furthermore, as the control means 500 unwinds the lead material 500L, the second divided door body 212 is locked at a predetermined position (such as a part of the first divided door body 211) to restrict its descent, and the third divided door body 213, housing the other divided door bodies 210 (the fourth divided door body 214 and the fifth divided door body 215), descends so as to protrude from the housing space of the second divided door body 212. As the control means 500 unwinds the lead material 500L in this manner, the divided door body 210 on the tip side is sent out from the housing space related to the divided door body 210 on the starting point side, and finally all the divided door bodies 210 are sent out from the housing body 300, so that the ventilation section VN is brought into a fully closed state.

[0034] The control means 500 may extend and retract the lead material 500L itself instead of the configuration shown in Fig. 3. In this case, the lead material 500L may have a telescopic structure made of multiple tubes, and one end (e.g., the lower end) of the lead material 500L may be connected to the split door body 210 at the most distal end. The control means 500 then extends and retracts the lead material 500L, thereby extending and retracting the split type door body 200S. Alternatively, the control means 500 may be configured to use a rack and pinion, or a special chain such as a zip chain.

[0035] Incidentally, it has been explained that the cross-sectional dimension of the storage space of the divided door body 210 needs to be longer than the cross-sectional dimension of the divided door body 210 adjacent to the tip side. In other words, the cross-sectional dimension of the divided door body 210 becomes smaller as it approaches the tip side, and the cross-sectional dimension of the divided door body 210 becomes larger as it approaches the starting point side. Therefore, if the ventilation section VN is rectangular, even if the divided door body 210 is fully extended, a gap that becomes wider as it approaches the tip side (hereinafter, the gap due to the difference in the cross-sectional dimension of the divided door body 210 is particularly referred to as the "door body gap") will be generated in the ventilation section VN. Therefore, as shown in FIG. 6(a), it is preferable to install a spacer 450 to fill the door body gap. This spacer 450 is naturally formed with a shape and dimensions that can close the door body gap, and it is preferable to place it inside the right frame material 430 and the left frame material 440 (the ventilation section VN side) and outside the ventilation section VN (the area shown by the dashed line in FIG. 6(a)). Even when the ventilation opening 440 is fully open, the spacer 450 does not move, but by arranging the spacer 450 outside the ventilation section VN, the spacer 450 does not become an obstacle causing pressure loss.

[0036] A groove-shaped support material (hereinafter referred to as "tip support material") into which a part of the split door body 210 can be inserted can be provided on the tip side of the split door body 200S (e.g., the bottom frame material 420). When the split door body 200S is fully extended and the ventilation section VN is fully closed, the split door body 200S can be supported against a load in the longitudinal direction by inserting a part of the split door body 210 on the most tip side into the tip support material. However, it is preferable to provide this tip support material outside the ventilation section VN (e.g., below the bottom frame material 420).

[0037] As explained above, the split type air volume control device 100S can be designed so that the storage body 300 is disposed above the ventilation section VN and the split door body 200S moves up and down, or the storage body 300 is disposed below the ventilation section VN and the split door body 200S moves up and down. Alternatively, as shown in Fig. 7, the split door body 200S can be divided into an upper and lower section, with an upper storage body 310 disposed above the ventilation section VN and a lower storage body 320 disposed above the ventilation section VN.

[0038] FIG. 8 is a cross-sectional view and a vertical-sectional view explaining the operation of the split door body 200S divided into upper and lower halves. In the case where the split door body 200S is divided into upper and lower halves as shown in this figure, it is preferable to arrange the upper control means 510 at the top and the lower control means 520 at the bottom. The upper split door body 200S is controlled by the upper control means 510, and the split door body 200S wound up at the top is stored in the upper storage body 310. Similarly, the lower split door body 200S is controlled by the lower control means 520, and the split door body 200S wound up at the bottom is stored in the lower storage body 320. The lower control means 520 may be configured to extend and retract the lead material 500L itself, such as by adopting a telescopic structure lead material 500L made of multiple tubes, by using a rack and pinion, or by using a zip chain.

[0039] In the case where the split door body 200S is divided into upper and lower halves, the door body gap is widest at the position where the two parts contact each other (for example, near the center in the extension direction). Therefore, in such a case, the spacer 450 should be shaped so that it is wider from the starting point side toward the center and also wider from the tip side toward the center, as shown in FIG.

[0040] The split type air volume control device 100S can also be designed so that the storage body 300 is disposed on the right side of the ventilation section VN and the split door body 200S moves left and right, or the storage body 300 is disposed on the left side of the ventilation section VN and the split door body 200S moves left and right. Alternatively, as shown in Fig. 9, the split door body 200S can be divided into a right side and a left side, and a right storage body 330 can be disposed on the right side of the ventilation section VN and a left storage body 340 can be disposed on the left side of the ventilation section VN.

[0041] FIG. 10 is a cross-sectional view and a vertical-sectional view explaining the operation of the split door body 200S divided into right and left. In the case where the split door body 200S is divided into right and left halves as shown in this figure, it is preferable to arrange the right control means 530 on the right side and the left control means 540 on the left side. The right side split door body 200S is controlled by the right control means 530, and the split door body 200S wound up on the right side is stored in the right storage body 330. Similarly, the left side split door body 200S is controlled by the left control means 540, and the split door body 200S wound up on the left side is stored in the left storage body 340. The right control means 530 and the left control means 540 may be configured to extend and retract the lead material 500L itself, such as by adopting a telescopic structure lead material 500L made of multiple tubes, by using a rack and pinion, or by using a zip chain.

[0042] In the case where the split door body 200S is divided into two halves, the door body gap is widest where the two halves come into contact (for example, near the center in the transverse direction). Therefore, in such a case, the spacer 450 should be shaped so that it is wider from the right side toward the center and also wider from the left side toward the center, as shown in FIG.

[0043] Up to this point, the split door body 200S of the split type air volume regulator 100S has been described as an example in which a box-shaped split door body 210 having a storage space is used, but the split door body 200S can also be configured using a plate-shaped split door body 210. In this case, when the split door body 210 is shortened, the split door bodies 210 adjacent in the extension / contraction direction are overlapped accordingly. Therefore, the storage body 300 is provided with a space capable of accommodating the split door bodies 210 when all of them are overlapped. The plate-shaped split door bodies 210 arranged in the ventilation section VN are sealed so that air does not leak between the split door bodies 210 adjacent in the extension / contraction direction.

[0044] (Retractable air volume adjustment device) Next, the roll-up type air volume regulator 100W will be described. The roll-up type air volume regulator 100W has a structure that utilizes a garage shutter, and is configured to roll up and unroll a door body 200. For this reason, the door body 200 (hereinafter, specifically referred to as the "roll-up type door body 200W") constituting the roll-up type air volume regulator 100W is a deformable plate-like member like a "slat."

[0045] FIG. 11(a) is a vertical cross-sectional view showing the winding type air volume regulator 100W, and FIG. 11(b) is a horizontal cross-sectional view showing the winding type air volume regulator 100W. As shown in this figure, the winding type air volume regulator 100W includes a winding door body 200W and a "winding means 500W" as a control means 500. The winding means 500W rotates a rotating body (drum or shaft) around its axis, and can utilize various conventional technologies such as winches and hoists. The winding means 500W is installed in the storage body 300, and the winding door body 200W is wound around the rotating body of the winding means 500W. The winding means 500W can be designed to rotate the rotating body using the power of an electric motor or the like, or can be designed to rotate the rotating body by manual operation such as turning a handle.

[0046] Since the winding means 500W is stored in the storage body 300, when all the winding door bodies 200W are wound around the rotor, the ventilation section VN is in a fully open state. When the winding means 500W unwinds the winding door body 200W from this fully open state, the winding door body 200W moves to the tip side (e.g., downward), and accordingly, the proportion of the winding door body 200W in the ventilation section VN gradually increases, that is, the opening degree of the ventilation section VN decreases. When the winding means 500W further unwinds the winding door body 200W, the winding door body 200W is positioned so as to seal the ventilation section VN, that is, the ventilation section VN is in a fully closed state.

[0047] On the other hand, when the winding means 500W winds up the roll-up door body 200W from the fully closed state, the roll-up door body 200W moves toward the starting point (e.g., upward), and the proportion of the roll-up door body 200W in the ventilation section VN gradually decreases, that is, the opening degree of the ventilation section VN increases. When the winding means 500W further winds up the roll-up door body 200W, all of the roll-up door body 200W is stored in the storage body 300, and the ventilation section VN is brought into the fully open state.

[0048] The roll-up type air volume regulator 100W may also be provided with guide rails 500G that guide the movement of the roll-up door body 200W. The guide rails 500G are disposed on both sides of the roll-up door body 200W as shown in Fig. 11(b), and have a U-shaped cross section so that a part of the roll-up door body 200W can be inserted as shown in Fig. 11(c). However, it is preferable that the guide rails 500G are provided on the outside of the ventilation section VN.

[0049] The roll-up type air volume regulator 100W can be provided with the "tip support" described for the split type air volume regulator 100S, and can be designed so that the roll-up door body 200W moves left and right in addition to up and down. Furthermore, the roll-up type air volume regulator 100W can be designed so that the split door body 200S is divided into two parts upward and then the upper storage body 310 and the lower storage body 320 are arranged as shown in Figures 7 and 8, or can be designed so that the split door body 200S is divided into two parts left and right and then the right storage body 330 and the left storage body 340 are arranged as shown in Figures 9 and 10.

[0050] (others) Up to this point, the description has been given using an example of a duct DC with a rectangular cross-sectional shape, but the air flow control device 100 of the present invention can be used with ducts DC with various cross-sectional shapes. For example, in Fig. 12(a), the air flow control device 100 is attached to a duct DC with a circular cross-sectional shape. In this case, the shape of the door body 200 can be a rectangle that can cover the circular shape of the duct DC, or it can be a "bell-shaped" shape as shown in Fig. 12(b). The upper half of the bell-shaped door body 200 is a semicircle with the same (or slightly larger) diameter as the duct DC, and the lower half is a rectangle with a cross-sectional dimension that is the same (or slightly larger) as the diameter of the duct DC. [Industrial Applicability]

[0051] The air volume control device of the present invention can be used in various buildings equipped with ventilation and air conditioning equipment using ducts, such as reactor buildings and turbine buildings in nuclear power plants, as well as ordinary homes, schools, and commercial facilities. The air volume control device of the present invention can also be used as various devices for adjusting air volume, such as volume dampers, and can also be used as various devices for blocking air paths, such as check dampers and fire dampers. The air volume control device of the present invention can reduce the cost of air volume control devices, and provides a suitable solution to the currently urgent issue of "energy conservation." Considering this, the invention can be expected to not only be used industrially, but also to make a great contribution to society. [Explanation of symbols]

[0052] 100 Air flow control device of the present invention 100S (of air flow control devices) Split air flow control device 100W (of the air flow control devices) Wind-up type air flow control device 200 (Air flow control device) door body 200S (Split type air flow control device) split door body 200W (Roller type air flow control device) Roller door 210 (of split gate body) Split gate body 300 (Air flow control device) housing 310 (Air flow control device) upper storage unit 320 (Air flow control device) lower storage unit 330 Right storage unit (for air flow control device) 340 Left storage unit (for air flow control device) 400 (Air flow control device) frame 410 (Frame) Upper Frame Material 420 (Frame) Bottom Frame Material 430 (Frame) Right Frame Material 440 (Frame) Left Frame Material 450 (Air flow control device) spacer 500 (Air flow control device) control means 500L (Control Means) Lead Material 510 (Air flow control device) upper control means 520 (Air flow control device) lower control means 530 Right control means (for air flow control device) 540 Left control means (for air flow control device) 500W (winding means for winding type air flow regulator) 500G (Air flow control device) guide rail DC Duct VN Ventilation section

Claims

1. A device for adjusting the amount of air flowing through a duct, comprising: A door body for opening and closing the ventilation part of the duct; A control means for moving the door body; A storage body that stores the door body, When the door body is moved by the control means so as to be sent out from the storage body, the opening degree of the ventilation part is reduced, When the control means moves the door body so as to be drawn into the storage body, the opening degree of the ventilation part increases, When the door body is stored in the storage body, the ventilation part is fully opened. An air flow control device characterized by:

2. The door body is formed by connecting two or more box-shaped divided door bodies, Among the adjacent split door bodies, one split door body closer to the storage body is accommodated inside the other split door body, When the control means moves the partition door so as to send out another partition door from inside the partition door, the opening degree of the ventilation part is reduced, When the control means moves the other partition door body so as to be drawn into the interior of the partition door body, the opening degree of the ventilation section increases.

2. The air flow rate adjusting device according to claim 1.

3. the control means is a winding means provided in the storage body and rotating around an axis, The door body is a deformable plate-like member, When the winding means rotates in one direction, the door body is wound up by the winding means, When the winding means rotates in the other direction, the door body is unwound from the winding means.

2. The air flow rate adjusting device according to claim 1.

4. The storage body is provided above or below the ventilation part, or both, The door body is moved up and down by the control means.

2. The air flow rate adjusting device according to claim 1.

5. The storage body is provided on the left side and the right side of the ventilation part, The door body is moved left and right by the control means.

2. The air flow rate adjusting device according to claim 1.

6. The housing is provided in one of the ventilation parts, The door body is moved left and right by the control means.

2. The air flow rate adjusting device according to claim 1.

Images