JP4991434B2 - Air volume control device - Google Patents

Description

  The present invention relates to an air volume adjusting device that is disposed in the middle of a pipe through which gas flows and is used to adjust the air volume (flow rate) of the gas flowing through the pipe.

  Various structures such as ducts and pipes have been arranged so far in various structures such as houses, offices, factories, etc. or machinery or plants that supply or discharge gas, and one side (upstream side) Gas is blown to the other side (downstream side). For example, in a house, office, or factory where people live or work, ventilation equipment is installed to supply outside air to the inside through a specific pipe and to supply the air inside through another pipe. It is discharged to the outside. In particular, in recent years, in order to prevent or alleviate the adverse effects on human bodies caused by chemical substances such as formaldehyde contained in building materials, it has been required to install prescribed ventilation equipment in houses that meet certain requirements. Yes. On the other hand, it is a request from the country as well as consumers living in the house that it should contribute to energy saving by eliminating waste of energy consumed in the house. However, the installation of the ventilation equipment means that the gas heated or cooled in the house is released to the outside, which contradicts the demand for energy saving. Therefore, in the past, it was aimed to effectively recover heat energy by releasing the gas in the house to the outside by installing such ventilation equipment and exchanging heat with the outside air supplied to the house. Residential ventilation systems have been proposed. Such a ventilation system is also referred to as planned ventilation, and has a pipe line for forcibly supplying a certain amount of outside air into the house and a pipe line for forcibly discharging a certain amount of air inside the house to the outside. . Therefore, in a house, office, etc., in order to satisfy both ventilation and energy saving, the air volume of the gas (air) flowing through the pipeline needs to be adjusted appropriately. Moreover, it is necessary to adjust not only the above-mentioned house but also a mechanical device or a plant so as to obtain an appropriate air volume.

By the way, various techniques have been proposed in the past for adjusting the air volume (flow rate) of the gas flowing in the pipeline. For example, in a duct through which gas flows, a disk-shaped damper is rotatably arranged, and the air volume is adjusted by closing or opening the inside of the duct by the damper (see Patent Document 1), The damper body is composed of two members that are half the shape of an ellipse, which is the shape in the duct, and the air volume is adjusted by rotating these two members (see Patent Document 2). There have been proposed ones that open and close the opening of a main body plate in which a plurality of fan-shaped openings are formed in a duct by an adjustment plate that is rotatably arranged (see Patent Document 3).
JP-A-6-129673 JP 2005-180747 A JP 2003-262372 A

  However, each of the devices described above cannot be employed due to the following problems. That is, in the techniques disclosed in Patent Documents 1 and 2, it is not possible to perform a subtle air volume setting, particularly in the range from the state where the circular damper body is fully opened to the state where it is rotated by 40 degrees. Even if the damper is slightly rotated, there is little influence on the air volume. Further, in the technique disclosed in Patent Document 3, fine air volume adjustment is possible by rotating the adjustment plate. On the other hand, the area of the opening formed in the main body plate is smaller than the total area of the main body plate. Even if the opening is fully open, the amount of air flowing through the pipeline is greatly limited. Furthermore, in the technique disclosed in Patent Document 3, the rotation axis of the adjustment plate has a length in the flow direction of the gas flowing through the duct, so the arrangement position of the main body plate and the adjustment plate is It is limited to the end of the duct through which gas flows in or out, and cannot be placed in the middle.

  Therefore, the present invention has been proposed in order to solve the various problems of the conventional air volume adjusting device described above, and not only enables more delicate air volume adjustment but also restricts the arrangement position. It is an object of the present invention to provide a novel air volume control device.

In order to achieve the above-described object, a first invention (invention according to claim 1) is an air volume adjusting device comprising a duct and a damper for adjusting the air volume of the gas flowing through the duct. The damper serves as an axis when being rotated, and a first damper formed with a first rotating shaft portion whose tip side is exposed to the outside of the duct, and the first damper. the distal end side and having the same axis and shaft pivoting and a second damper second rotary shaft portion formed by exposing the outer portion of the duct is formed, the first or second In the state where the gas in the duct can be circulated by the rotation of the second damper, the air volume is adjusted by the rotation of the second or first damper , and the duct is cylindrical. The first damper is formed into a disk shape, and the front damper The first rotation shaft portion is formed with a first positioning piece, and the second damper has a semicircular plate portion formed in a semicircular shape, and the second rotation portion. A second positioning piece is formed on the shaft portion, and the outer peripheral surface of the duct is arranged in an arc shape around the first rotating shaft portion, and the first positioning piece is engaged with the shaft. And a second engagement portion that is arranged in a circular arc around the second rotation shaft portion and that engages with the second positioning piece. It is characterized by.

According to the present invention, the duct is formed in a cylindrical shape, the first damper is formed in a disk shape, and a first positioning piece is formed on the first rotating shaft portion. The second damper has a semicircular disk portion formed in a semicircular shape, and a second positioning piece is formed on the second rotating shaft portion, and the outer periphery of the duct The surface includes a first engagement portion that is arranged in an arc shape around the first rotation shaft portion and that engages with the first positioning piece, and the second rotation shaft portion. a second engagement portion which the second positioning piece will be arranged in an arc to engage the center, are formed.

In the present invention, when the first damper is pivotally adjusted, the first damper is positioned by the engagement between the first positioning piece and the first engaging portion, and the second damper When the damper is rotated and adjusted, the second damper is positioned by the engagement between the second positioning piece and the second engaging portion. The rotated first or second damper is fixed by the engagement of the first or second positioning piece and the (first or second) engaging portion at an arbitrary position, and is changed by the gas flow. do not do. In order to speed up the air volume adjustment work, for example, in the vicinity of the first or second engaging portion arranged in an arc shape around the first or second rotating shaft portion, for example, “ Affixing or engraving a display sticker indicating a number such as “1, 2, 3,...”, “A, b, c. May be.

According to a second invention (invention according to claim 2 ), in the first invention, the duct has one slit through which the first rotating shaft portion or the second rotating shaft portion is inserted. And the other through which the first rotating shaft portion or the second rotating shaft portion is inserted while having an inner diameter that is larger than the outer diameter of the first duct. A second duct in which a slit is formed, and the first engaging portion and the second engaging portion are formed in either the first duct or the second duct. In addition, the first damper and the second damper are configured such that the first rotating shaft portion constituting the first damper or the second rotating shaft portion constituting the second damper is the one slit. And the other slit and is sandwiched between the first duct and the second duct. Those characterized by comprising.

  The one and the other slits are portions through which the first rotation shaft portion or the second rotation shaft portion is inserted, and as described above, the first rotation constituting the first damper. When the moving shaft portion is formed into a rod shape, the second rotating shaft portion is formed in a cylindrical shape, and the rotating shaft portion is inserted through the second rotating shaft portion. It is necessary to correspond to the outer diameter of the second rotation shaft portion, and conversely, the first rotation shaft portion constituting the first damper is formed into a cylindrical shape, while the second rotation shaft portion is formed. When the shaft portion is formed into a rod shape and the first rotation shaft portion is inserted into the second rotation shaft portion, the shaft portion corresponds to the outer diameter of the first rotation shaft portion. It is necessary to be.

According to a third invention (invention of claim 3 ), in the second invention, the second damper includes a ring-shaped frame portion rotatably fitted in the duct, A semicircular blocking portion that closes substantially half of the ring-shaped frame portion, a second upper rotating shaft portion that stands up from the upper end of the ring-shaped frame portion, and a lower end of the ring-shaped frame portion that hangs down from the lower end. And the second positioning portion formed in a direction orthogonal to the length direction of the second upper rotation shaft portion from the outer peripheral surface of the second upper rotation shaft portion. And the second upper rotating shaft portion and the second lower rotating shaft portion are the second rotating shaft portion, and the second upper rotating shaft portion and the second upper rotating shaft portion. At least one of the lower rotation shaft portions is formed in a horizontal cross-sectional C shape, and the first damper is rotatably fitted in the ring-shaped frame portion. A disk portion formed into a shape, and a first upper rotation shaft portion that is erected from the upper end of the disk portion, and the midway portion is inserted into the second upper rotation shaft portion, A first lower rotation shaft portion that is suspended from the lower end of the disc portion and is inserted into the second lower rotation shaft portion, and the first upper rotation shaft portion and the first lower rotation shaft portion. One lower rotation shaft portion is the first rotation shaft portion.

In the third aspect of the invention, the second rotating shaft portion constituting the second damper is composed of the second upper rotating shaft portion and the second lower rotating shaft portion, and the first damper is also provided. Since the first rotation shaft portion constituting the first and second rotation shaft portions includes a first upper rotation shaft portion and a first lower rotation shaft portion, the first and second dampers rotate in a stable state. Moved. In addition, since at least one of the second upper rotating shaft portion and the second lower rotating shaft portion is formed in a horizontal section C shape, the first upper portion constituting the first damper is formed. The rotary shaft portion or the first lower rotary shaft portion is press-fitted and fitted through the opening portions of the second upper rotary shaft portion and the second lower rotary shaft portion, so that the first damper and The second damper is integrated.

  An air volume adjusting device according to a first invention (the invention according to claim 1) includes a first damper and a second damper, and the gas in the duct is circulated by the rotation of the first or second damper. Since the air volume is adjusted by the rotation of the second or first damper in the enabled state, the air volume can be adjusted more appropriately than the conventional air volume adjusting device. That is, even if it is in the range from the state where either the first or second damper is fully opened to the state where it is rotated by about 40 degrees, the second damper or the first damper can be slightly changed by rotating the second damper or the first damper. It is possible to adjust the air volume smoothly. Further, in the first invention, since the first rotating shaft portion and the second rotating shaft portion have a length in the radial direction of the duct, the arrangement position is limited as in the conventional air volume adjusting device. It can be arranged not only at the end of the conduit but also in the middle. In addition, in the first aspect of the invention, the first rotating shaft portion and the second rotating shaft portion have the same axis, so that the apparatus can be reduced in size.

Furthermore, in the first invention , the duct is formed in a cylindrical shape, the first damper is formed in a disk shape, and the second damper is formed in a semicircular shape, so that the pressure loss is reduced most. be able to. In the present invention, the first positioning piece is formed. On the outer peripheral surface of the duct, the first positioning piece is arranged side by side in an arc shape around the first rotation shaft portion. Since the first engaging portion to be engaged is formed, it is possible to effectively prevent a risk that the position of the first damper changes due to the influence of gas. The second damper is formed with a second positioning piece, and the outer peripheral surface of the duct is formed with a second engaging portion with which the second positioning piece is engaged. Therefore, similarly, it is possible to effectively prevent the risk that the position of the second damper changes due to the influence of gas.

In the second invention (the invention described in claim 2) , the duct is configured such that the first duct and the second duct are connected, and the first damper and the second damper include the first damper. The first rotating shaft portion constituting the second damper shaft portion or the second rotating shaft portion constituting the second damper is inserted through both the one slit and the other slit, and the first duct and the second duct. Therefore, the duct can be easily manufactured and easily assembled, and the maintenance work can be simplified.

In the third invention (the invention described in claim 3) , the second rotating shaft portion constituting the second damper includes a second upper rotating shaft portion and a second lower rotating shaft portion. In addition, since the first rotation shaft portion constituting the first damper is composed of the first upper rotation shaft portion and the first lower rotation shaft portion, the first and second rotation shaft portions are formed. The damper can be rotated in a stable state.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an air volume adjusting device according to the best mode for carrying out the present invention will be described in detail and specifically with reference to the drawings. In addition, the air volume control apparatus which concerns on this embodiment is arrange | positioned at each branch discharge pipe group connected to the residential ventilation apparatus which comprises a residential ventilation system. Therefore, hereinafter, the air volume control device according to the present invention will be described while explaining the residential ventilation system and the residential ventilation device.

  In this residential ventilation system, as shown in FIG. 1, a residential ventilation device 2 is arranged on the second floor of a two-story house 1. This residential ventilation device 2 is hung from a ceiling 4 on the second floor by a hanging tool (not shown) on a closet 3 provided on the second floor, and this closet 3 is a first that partitions the rooms. Wall surface 5, outer wall 6 (see FIG. 3), second wall surface 7 that faces the first wall surface 5, and open / close door 8 that is perpendicular to the first wall surface 5 and that can be opened and closed. It is a configured space, and the front surface of the residential ventilation device 2 faces the door 8. The residential ventilation device 2 is formed in a substantially rectangular parallelepiped shape and has an opening (reference numeral is omitted) on the front surface, as shown in FIGS. A first front cover 11 that is detachably mounted on the housing 10 and closes the upper side of the opening, and a second front cover 11 that is detachably mounted on the lower side of the first front cover 11 and closes the opening. The front cover 12 is provided. A remote controller 13 is disposed on the front of the first front cover 11 to electrically control and adjust the on / off operation of the residential ventilation device 2 and the ventilation amount. Further, a horizontally long opening (reference numeral is omitted) is formed in the lower middle part of the second front cover 12, and the maintenance cover 14 can be opened and closed in this opening. Further, first and second heat exchange elements (heat exchange elements) 15 and 16 are arranged on the top and bottom of the housing 10 on the back side of the second front cover 12. These first and second heat exchanging elements 15 and 16 are elements that exchange heat between the outside air that flows in from the outside of the house 1 and the air that is discharged from the inside of the house 1 as will be described later. . An air filter 17 is disposed below the second heat exchange element 16. The air filter 17 removes the outside air flowing in from the outside of the house 1 before reaching the lower side of the second heat exchange element 16 and is provided in front of the house ventilation device 2. The maintenance cover 14 can be attached and detached by opening it.

  The top plate 19 constituting the housing 10 of the residential ventilation device 2 has first to fourth openings (not shown) formed in the first to fourth openings (D in FIG. 2). ), The first to fourth tubular bodies 20... 23 are fixed. The first tubular body 20 is an external airflow inlet (OA) through which air outside the house 1 (outside air) flows into the residential ventilator 2 and is fixed in front of the first tubular body 20. The second pipe body 21 is an indoor air inlet (RA) through which the air in the house 1 flows into the house ventilation device 2. The third tube body 22 arranged on the right side of the second tube body 21 is an indoor air supply that supplies the air flowing into the residential ventilation device 2 from the first tube body 20 into the room. The mouth (SA). In addition, the fourth pipe body 23 arranged behind the third pipe body 22 is an indoor air flow that causes the air flowing from the second pipe body 21 into the residential ventilation device 2 to flow out of the room. The exit (EA). Then, an air supply blower 25 is disposed below the third tubular body 22 and in the housing 10 as shown in FIG. 2C, and the fourth tubular body 23. An exhaust fan 26 is fixed below the exhaust fan 26. Further, a first outside air passage (not shown) is formed in the housing 10 from the first tube body (outside air flow inlet: OA) 20 to the lower side of the air filter 17. A second outside air flow path (not shown) is also formed from 17 to the lower surface of the second heat exchange element 16. In addition, a first heat exchange channel (not shown) is formed in the second heat exchange element 16 in the vertical direction, and a second heat exchange (not shown) in the vertical direction is also formed in the first heat exchange element 15. A flow path is formed. The first heat exchange flow path and the second heat exchange flow path are connected to each other, and the second heat exchange flow path is connected to the third tubular body (indoor air supply port: SA). Yes. On the other hand, a first indoor air flow path (not shown) is formed from the second tubular body (indoor air inlet: RA) 21 to one side surface of the first heat exchange element 15. The indoor air flow path is connected to a third heat exchange flow path (not shown) formed in the first heat exchange element 15 in the horizontal direction. Further, the other side surface of the first heat exchange element 15 and the other side surface of the second heat exchange element 16 are connected by a second indoor air flow path (not shown). Has a fourth heat exchange channel in the horizontal direction. The fourth heat exchange flow path is connected to the fourth tubular body (indoor air outlet: EA) 23.

  As shown in FIG. 3, one end of an outside air inflow pipe 27 is connected to the first tube body (outside air flow inlet: OA) 20, and the other end of the outside air inflow pipe 27 is connected to the outer wall 6. It is inserted through the formed tube mounting hole (reference numeral is omitted) and is exposed outdoors. In addition, one end of an indoor air suction pipe 28 connected to the ceiling of a hall (not shown) provided in the house 1 is connected to the second tubular body (indoor air inlet: RA) 21. The other end of the indoor air suction pipe 28 is fixed to the ceiling of the hall. When the exhaust fan 26 is driven as will be described later, the air in the hall is sucked from the other end of the indoor air suction pipe 28, It flows into the residential ventilation device 2. Further, a branch chamber 32 described later is connected to the third pipe body (indoor air supply port: SA), and this branch chamber 32 is connected to each room via an air volume adjusting device 45 described later. The air is divided and supplied but connected. One end of an indoor air exhaust pipe 33 is connected to the fourth tubular body (indoor air outlet: EA) 23. The other end of the indoor air exhaust pipe 33 is inserted into a pipe mounting hole (reference numeral is omitted) formed in the outer wall 6 and faces the outdoors. The other end of the outside air inflow pipe 27 and the other end of the indoor air exhaust pipe 33 are fixed vertically and covered with an outdoor hood 34 fixed to the outer surface of the outer wall 6.

  In other words, as schematically shown in FIG. 4, when the air supply fan 25 and the exhaust air fan 26 are driven, the residential ventilation device 2 is configured such that outside air flows from the other end side of the outside air inflow pipe 27. 1 flows into the residential ventilator 2 through one tube body (outside airflow inlet: OA) 20 and enters the second and first heat exchange elements 16 and 15 from the lower side of the air filter 17 shown in FIG. Passes through the first and second heat exchange flow paths (not shown) formed in, and reaches a branch chamber (to be described later) via a third tubular body (indoor air supply port: SA) 22, and this branch chamber 32. From the other end of the branch discharge pipes 29, 30, 31... On the other hand, air in a hole (not shown) flows from the indoor air suction pipe 28 and flows into the residential ventilation device 2 via the second tubular body (indoor air inlet: RA) 21. Passes through the third heat exchange channel formed in one heat exchange element 15 and the fourth heat exchange channel formed in the second heat exchange element 16, and the fourth pipe body (indoor air flow) The air is discharged to the outside from the other end of the indoor air exhaust pipe 33 via the outlet (EA) 23.

  Next, the branch chamber 32 will be described. As shown in FIG. 5, the branch chamber 32 includes a cylindrical portion 32a having an inner diameter substantially the same as the outer diameter of the third tubular body (indoor air supply port: SA) 22, and an upper end of the cylindrical portion 32a. The volume is expanded, and the upper end includes an expanded portion 32c closed by a rectangular top plate 32b (see FIG. 6). The top plate 32b is formed with first to ninth openings (not shown), and the base ends of the first to ninth cylindrical members 35... 43 are fixed to the first to ninth openings. Has been. And the air volume adjusting device 45 which comprises this invention is each attached to the front-end | tip of the said 1st thru | or 9th cylindrical members 35 ... 43, and the upper end of these air volume adjusting devices 45 is shown in FIG. One ends of the branch discharge pipes 29, 30, 31... Are connected. The branch discharge pipes 29, 30, 31... Are a branch discharge pipe group constituting the present invention. Therefore, the air volume adjusting device 45 according to the embodiment of the present invention will be described in detail below.

  As shown in FIG. 7, FIG. 8 or FIG. 11, the air volume adjusting device 45 includes a first duct 46, a second duct 47 connected to the first duct 46, and the first and second ducts. The first damper 48 and the second damper 49 change and adjust the amount of air flowing through the ducts 46 and 47. The first duct 46 is substantially integrally formed of resin, and one end is a portion connected to the first to ninth cylindrical members 35... 43 shown in FIG. Further, a first slit 46 a and a second slit 46 b are formed at the other end of the first duct 46 with the center of the first duct 46 interposed therebetween. The first and second slits 46a and 46b are one of the slits constituting the present invention, and the length and width of each are the same. Further, one branch pipe portion 46c that communicates with the inside of the first duct 46 is erected slightly on one end side from the position where the first slit 46a is formed. Also, a first enlarged diameter portion 46d with which one end of the second duct 47 abuts is formed in a ring shape slightly on the other end side of the first duct 46 from the position where the one branch pipe portion 46c is formed. ing. Further, second to fourth enlarged diameter portions 46e... 46g are formed in a ring shape on the one end side of the first duct 46 from the vicinity of the formation position of the one branch pipe portion 46c. A locking claw 46h is formed on the outer peripheral surface of the first duct 46 on the other end side of the first duct 46 from the position where the first enlarged diameter portion 46d is formed. .

  The second duct 47 is integrally formed of the same material as the first duct 46, and one end side is a portion through which the other end side of the first duct 46 is inserted. The third slit 47a and the fourth slit 47b are formed at the one end with the center of the second duct 47 interposed therebetween. Each of the third and fourth slits 47a and 47b is one of the slits constituting the present invention, and the width of each of the third and fourth slits 47a and 47b is the same as that of the first and second slits 46a and 46b. The lengths of the four slits 47a and 47b are longer than those of the first and second slits 46a and 46b. Further, in the second duct 47, fifth and sixth slits 47c and 47d having the same length and width are formed between the third slit 47a and the fourth slit 47b. An elastic piece 47e is formed between the fifth slit 47c and the sixth slit 47d. The elastic piece 47e (between the fifth slit 47c and the sixth slit 47d) has a locking hole in which a locking claw 46h formed in the first duct 46 is locked. 47f is formed. Further, a fifth enlarged diameter portion 47g is formed on the outer peripheral surface of the middle portion on the other end side of the second duct 47, and the fifth enlarged diameter portion 47g and the third slit 47a are connected to each other. A plurality of the other branch pipe portions 47h and a plurality of upper side engaging portions 47i are formed between them, and further, on the inner peripheral surface of the second duct 47 at the position where the fifth enlarged diameter portion 47g is formed. A reduced diameter portion 47j is formed at the corresponding position. The other branch pipe portion 47h is formed in the same shape as the one branch pipe portion 46c formed in the one duct 46, and as shown in FIG. 8, the first and second ducts 46 are formed. , 47 and the first and second dampers 48 and 49 (described later) when assembled with the first and second dampers 48 and 49 (first and second) rotating shafts. The distances are the same as each other. That is, the distance from the (first and second) rotation shafts of the first and second dampers 48 and 49 to the one branch tube portion 46c, and the other branch tube portion 47h from the rotation shaft. Is the same distance as each other. The upper side engaging portions 47i stand up from the outer peripheral surface of the second duct 47, and have a plurality of upper portions each having a length in the radial direction around the end of the fourth slit 47b. The upper side engaging portions are arranged in parallel with each other being shifted by several degrees so as to draw an arc centered on the end portion of the fourth slit 47b. Yes. In addition, these upper side engaging parts 47i are the 1st engaging parts which comprise this invention. Further, these upper side engaging portions 47i are portions where a first positioning piece 48c constituting a first damper 48 described later is selectively engaged, and among the plurality of upper side engaging portions, The upper stopper piece 47k corresponding to the position where the first damper 48 is most opened (the state in which the most air flows in the first and second ducts 46 and 47) is formed from the outer peripheral surface of the second duct 47. The height of the first positioning piece 48c is higher than that of the other upper side engaging portions, so that the first positioning piece 48c cannot be rotated further than the position where the upper side stopper piece 47k is formed. A plurality of lower side engagements with which a second positioning piece 49d constituting a second damper 49 to be described later is engaged on the outer peripheral surface of the other duct 47 and in the vicinity of one end of the other duct 47. 47l, 47m, 47n are formed, and the height of the lower side engaging portion 47n on the right side in Fig. 12 is higher than the lower side engaging portions 47l, 47m, 47n from the outer peripheral surface of the second duct 47. A lower stopper piece 47o (see FIG. 12) having a high height is formed.

  The first damper 48 is integrally formed of resin. As shown in FIG. 9, the first damper main body 48a formed in a disk shape and the first damper 48 are formed. A first upper rotating shaft portion 48b standing from the upper end of the main body portion 48a, and a length direction of the first upper rotating shaft portion 48b from the upper end of the first upper rotating shaft portion 48b. A first positioning piece 48c extending in the direction of the first lower rotation, and a first lower rotation located at the lower end of the first damper main body 48a and on the extension line of the first upper rotating shaft 48b. And a moving shaft portion 48d. The first upper rotation shaft portion 48b is a first rotation shaft constituting the present invention. On the other hand, the second damper 49 is integrally formed of the same resin as the first damper 48, and as shown in FIG. (A ring-shaped frame portion) 49a, a second damper main body portion 49b which is formed in a substantially semicircular shape by closing about half of the frame portion 49a, and a second standing up from the upper end of the frame portion 49a. Upper rotation shaft portion 49c, and a second positioning extending from a side portion of the second upper rotation shaft portion 49c in a direction perpendicular to the length direction of the second upper rotation shaft portion 49c. It consists of a piece 49d and a second lower rotating shaft portion 49e which is located at the lower end of the frame portion 49a and on the extension line of the second upper rotating shaft portion 49c. The frame portion 49a is formed in a cylindrical shape having substantially the same length as the thickness of the first damper main body portion 48a. The second upper rotating shaft portion 49c is a second rotating shaft constituting the present invention. In the present embodiment, the first upper rotating shaft portion 48b is rotated inside. A press-fit opening 49f is formed that passes through the first upper rotation shaft portion 48b when it is press-fitted from the side. That is, in the air volume adjusting device 45 according to this embodiment, the second upper rotating shaft portion 49c is formed in a horizontal cross-section C shape. The second lower rotation shaft portion 49e is formed in a cylindrical shape, and is configured so that the first lower rotation shaft portion 48d can be inserted from above.

  The first damper 48 and the second damper 49 thus configured are assembled so as to be integrated as shown in FIG. In other words, the first damper 48 can be rotated separately from the second damper 49 (clockwise as shown in FIG. 12), and the first damper 48, as will be described later, When the damper 48 is rotated and the air flow path formed in the first and second ducts 46 and 47 is released, the second damper 49 is rotated separately from the first damper 48. It becomes possible. In the first damper 48 and the second damper 49, as described above, the first upper rotating shaft portion 48b is inserted into the second upper rotating shaft portion 49c, and the first lower rotating shaft portion 48c is inserted. Since the rotation shaft portion 48d is integrated with the second lower rotation shaft portion 49e being inserted, the first and second upper rotation shaft portions 48b and 49c have the same axis. Thus, the first and second lower rotating shafts 48d and 49e have the same axis.

  And the 1st and 2nd dampers 48 and 49 comprised as mentioned above are assembled | attached with respect to the said 1st duct 46 and the 2nd duct 47 as shown in FIG.8 and FIG.11. Yes. That is, the second upper rotating shaft portion 49c shown in FIG. 7 is inserted into the first slit 46a and the third slit 47a, and the first and third slits 46a, 47a. At the same time, the second lower rotating shaft portion 49e is inserted into the second slit 46b and the fourth slit 47b, and the second and fourth The slits 46b and 47b are assembled in a state of being sandwiched between the closed end portions. The first upper rotating shaft 48b and the second upper rotating shaft 49c are both exposed to the outside of the one and the other ducts 46 and 47. Further, the locking claw 46h is locked in a locking hole 47f formed in the elastic piece 47e so that the first duct 46 does not fall off from the second duct 47.

  In the air volume adjusting device 45 assembled in this manner, the first damper main body 48a is rotated by turning the first positioning piece 48c over a range of about 90 degrees. Further, the second damper main body 49a can also be rotated and adjusted over about 90 degrees. That is, as shown in FIG. 12A, the first positioning piece 48c is most closely engaged between the left upper engaging portion 47i and the right upper engaging portion 47i. In the state where the second positioning piece 49d is engaged between the leftmost lower engaging portion 47l and the lower engaging portion 47m formed on the right side of the second positioning piece 49d, One damper main body 48a is located in the frame 49a constituting the second damper 49, and the flow path is completely closed. In addition, when only the first positioning piece 48c is rotated 45 degrees clockwise from the state shown in FIG. 12A, the first damper main body 48a rotates, and FIGS. 12 (B), and the air can be circulated. In the state shown in FIG. 12B (the flow path is released by the first positioning piece 48c), for example, the second positioning piece 49d is rotated approximately 90 degrees counterclockwise. As shown in FIG. 12 (C), when it is moved and positioned between the lower side engaging part 47o formed on the rightmost side in FIG. 12 and the lower side engaging part 47n formed on the left side thereof. The second damper main body 49b is located in the same direction as the air flow direction in the flow path, and the air volume is further increased.

  In this embodiment, as described above, the second damper 49 constituting the air volume adjusting device 45 employs a method of rotating in the counterclockwise direction in FIG. As shown, the second damper 49, like the first damper 48, adopts a method of rotating in the clockwise direction, and the position of the second positioning piece 49d is rotated 90 degrees counterclockwise. It is also possible to change the position in the direction and further increase the number of lower side engaging parts (lower side engaging parts 47l... 47r and part side stopper pieces 47s). According to the air volume adjusting device 45 according to such a modified example, as shown in FIG. 13A, the air flow path is completely blocked by the first damper main body portion 48a and the second damper main body portion 49d. In this state, as shown in FIG. 13B, the flow path is released by rotating the first positioning piece 48c clockwise, for example, 90 degrees. In this state, if the second positioning piece 49d is operated to rotate in the clockwise direction, the amount of air flowing in the flow path is further increased, and from the state shown in FIG. When the second positioning pieces 48c and 49d are rotated 90 degrees in the clockwise direction, the amount of air flowing through the flow path becomes maximum as shown in FIG.

  As shown in FIG. 14, the upper air flow rate adjusting device 45 configured in this way has one end (lower end) of the first duct 46 of the first to ninth cylindrical members 35. The other end (upper end) of the second duct 47 that is connected to the upper end and constitutes each air volume adjusting device 45 is connected to the branch discharge pipe groups 29, 30, 31,... Shown in FIG. Furthermore, each air volume adjusting device 45 is connected to a fine differential pressure gauge 51 via each connection tube and a connection adapter 50 described later. The connection adapter 50 is integrally formed in a long rectangular parallelepiped shape with a resin, and as shown in FIGS. 14 and 15, on the upper surface, one upstream connection pipe portion 50a and one downstream side are formed. Connection pipe portions 50b are formed alternately and linearly in the length direction of the connection adapter 50. That is, nine of the one upstream connection pipe portion 50a and the one downstream connection pipe portion 50b are provided. In addition, one upstream connection pipe part 50a and one downstream connection pipe part 50b have the same shape. The one upstream connection pipe portion 50a is connected to the other end of one upstream connection tube 54, one end of which is connected to one branch pipe portion 46c constituting the air volume adjusting device 45. It is a part. The one downstream connection pipe portion 50b is connected to the other end of one downstream connection tube 55, one end of which is connected to the other branch pipe portion 47h constituting the air volume adjusting device 45. It is a part. That is, a total of nine air volume control devices 45 connected between the first to ninth cylindrical members 35... 43 and the branch discharge pipe groups 29, 30, 31,. The connection adapter 50 is connected via the one upstream connection tube 54 and the one downstream connection tube 55, respectively. The other upstream connection hole 50c and the other downstream connection hole 50d are alternately formed in the length direction of the connection adapter 50 on the front surface of the connection adapter 50. The other upstream connection hole 50c and the other downstream connection hole 50d are each provided with nine pieces, and the other upstream connection hole 50c and the other downstream connection hole 50d are the same. It is said that the shape. The other upstream connection hole 50c and the one upstream connection pipe 50a communicate with each other inside the connection adapter 50. The other downstream connection hole 50d and the one downstream connection pipe portion 50b communicate with each other inside the connection adapter 50.

  Further, the fine differential pressure gauge 51 includes a pressure below the first and second dampers 48 and 49 and a pressure above the first and second dampers 48 and 49 constituting the air volume adjusting devices 45. In the fine differential pressure gauge 51 according to this embodiment, the air volume in the air volume adjusting device 45 is converted from the above measured values. It has a function. That is, a display unit 51a for displaying the two measured values and the air volume and an operation unit (not shown) are provided on the front side of the differential pressure gauge 51, and a left connection unit 51b is formed on the upper left side. Is provided with a right connecting portion 51c. The left connection portion 51b is a portion to which one end of one connection tube 52 is connected, and the right connection portion 51c is a portion to which one end of the other connection tube 53 is connected. In this embodiment, a connector 57 is connected to the other end of the one connection tube 52 and the other end of the other connection tube 53, and is connected to the connection adapter 50 via the connector 57. Yes. The connector 57 includes one pipe portion 54a, the other pipe portion 54b fixed in parallel with the one pipe portion 54a, and a fixing member 54c configured to fix the one and other pipe portions 54a and 54b. It is composed of The other end of the one connection tube 52 is connected to one end of the one pipe portion 54a, and the other end of the other connection tube 53 is connected to one end of the other pipe portion 54c. The other end of the one pipe portion 54a is a portion that is press-fitted into any one of the other upstream connection hole portions 50c formed in front of the connection adapter 50, and the other pipe portion 54b The other end is a portion that is press-fitted into the other downstream connection hole 50d formed next to the other upstream connection hole 50c into which the one pipe portion 54a is press-fitted.

  Therefore, when the air volume in the air volume adjusting device 45 connected to the upper end of the first cylindrical member 36 is measured by the fine differential pressure gauge 51, for example, the operator holds the connector 57 with fingers, The other end of one pipe portion 54a constituting the connector 57 is press-fitted into the other upstream connection hole portion 50c formed on the front surface of the connection adapter 50, and the other end of the other pipe portion 54b is connected to the other end. Press fit into the downstream connection hole 50d. By such connection operation, the air volume in the air volume adjusting device 45 is measured. At this time, when the air volume in the air volume adjusting device 45 is less than the predetermined value or exceeds the predetermined value, the measured value (air volume value) displayed on the display unit 51a of the fine differential pressure gauge 51 is visually observed. The first positioning piece 48c and / or the second positioning piece 49d exposed in the closet 3 are rotated in the clockwise direction or the counterclockwise direction, respectively, so that the first damper main body 48a or By rotating the second damper main body 49b and appropriately adjusting the air flowing through the internal flow path, the measured value is adjusted to be a predetermined value (required ventilation amount). When the adjustment work of the specific air volume adjustment device 45 is completed, the adjustment work of another air volume adjustment device 45 is then performed. In this case, the connector 57 that has been connected so far is connected to the other upstream connection hole 50c and the other downstream connection hole 50d corresponding to the other air volume adjusting device 45, and the above-described procedure is followed. The air volume adjustment work of another air volume adjusting device 45 is performed. And by the air volume adjustment work of each air volume adjusting device 45, the required ventilation volume and the actual ventilation volume of each room become the same.

  That is, the air volume adjusting device 45 according to the above-described embodiment is disposed in each of the branch discharge pipes 29, 30, 31... That divides and supplies the outside air introduced into the residential ventilation device 2 into each room. Therefore, the air volume adjusting work by the air volume adjusting device 45 can be operated at one place. Therefore, according to such an air volume adjusting device 45, the air volume of each room can be adjusted extremely easily and quickly. Further, in the air volume adjusting device 45, one branch pipe portion 46c that connects one end of one upstream connection tube 54 is formed, and the other branch pipe that connects one end of one downstream connection tube 55 is formed. The portion 47h is formed, and the differential pressure gauge for measuring the pressure difference required for converting the air volume by the K-factor method through the connection adapter 50 and the one and other connection tubes 52 and 53 described above. Since the structure that can be connected to 51 is provided, the wind force can be measured more accurately, and as a result, the amount of air (air flow) to be supplied to each room can be adjusted to an optimum value. Become.

  Further, according to the air volume adjusting device 45 according to this embodiment, the first damper 48 as the air volume adjusting means is rotated by rotating the first positioning piece 48c constituting the present invention. In addition, the position of the first damper 48 that has been rotated is held by the engagement between the first positioning piece 48c and the upper side engaging portion 47i that is the first engaging portion. Therefore, the air volume is not changed by the wind pressure from the residential ventilation device 2. Further, in the air volume adjusting device 45, not only can the air volume be adjusted by rotating the first damper 48, but the first damper 48 is fully or partially opened in the state described above. By turning the second damper 49, the air volume can be adjusted more precisely. In particular, in the range from the fully open state to the state where the first damper 48 is rotated by 40 degrees from the fully open state, even if the first damper 48 is slightly rotated, the adjustment of the air volume is not affected. (It is very difficult to adjust the air volume), so that the air volume can be adjusted very precisely within the above range by using the second damper 49 as a constituent element. Further, by rotating this second positioning piece 49d, it is possible to rotate the second damper 49, which is the air volume adjusting means, and the second damper 49 that has been rotated is Since the position of the second positioning piece 49d and the lower engaging portions 47l, 47m, 47n, which are the second engaging portions, are held, the air volume is increased by the wind pressure from the residential ventilation device 2. Will not be changed.

  Further, in the air volume adjusting device 45, the duct is formed by connecting the first and second ducts 46 and 47, and the first and second dampers 48 and 49 are connected to the first duct 46. It is inserted through the slits (first to fourth slits 46 a, 46 b, 47 a, 47 b) formed in the second duct 47 and is sandwiched between the first duct 46 and the second duct 47. In addition, the duct can be easily manufactured and easily assembled, and the maintenance work is also simplified. Further, in the air volume adjusting device 45, the residential ventilation device 2 is disposed in the closet 3 formed in the home, and the first and second ducts 46 and 47 are exposed in the closet 3. Since it is not arranged on the ceiling (the back of the cabin) or under the floor, the air volume can be adjusted more easily and quickly. Further, in the air volume adjusting method described above, the air volume adjusting devices 45 and the micro differential pressure gauge 51 are connected to each other via the connection adapter 50, and the air volume flowing through each air volume adjusting device 45 is adjusted. Since there is no need to reconnect the connecting tube to the micro differential pressure gauge 51 for each individual air volume adjusting device 45, the air volume adjusting operation can be performed more easily. Moreover, according to the air volume adjustment method using the connection adapter 50 described in the above embodiment, the one upstream connection tube 54 and the other upstream connection tube 55 can be alternately arranged and connected. Since one connection tube 52 and the other connection tube 53 that connect the connection adapter 50 and the micro differential pressure gauge 51 can be connected side by side, the air volume is erroneously adjusted based on the measurement error or the measurement error. Can also be prevented.

  In addition, the following effects can be achieved with the air volume adjusting device 45 alone. That is, the air volume adjusting device 45 includes the first damper 48 and the second damper 49, and the state in which the gas in the duct is allowed to flow by the rotation of the first or second damper 48, 49. Since the air volume is adjusted by the rotation of the second or first dampers 49 and 48, the air volume can be adjusted more appropriately than the conventional air volume adjusting device. In other words, the second damper 49 or the first damper 48 can be used even in a range from a state in which either the first or second damper 48, 39 is fully opened to a state rotated about 40 degrees. By turning it, it becomes possible to finely adjust the air volume. In the air volume adjusting device 45, the first upper rotating shaft portion 48b and the first lower rotating shaft portion 48d, which are the first rotating shaft portions, are also the second rotating shaft portions. Since the upper rotating shaft portion 49c and the second lower rotating shaft portion 49d also have a length in the radial direction of the first and second ducts 46 and 47, the arrangement position is different from that of the conventional air volume adjusting device. There is no limitation, and the end portion of the pipe line can of course be arranged in the middle portion. Moreover, in the air volume adjusting device 45, the first upper rotating shaft portion 48b, the second upper rotating shaft portion 49c, the first lower rotating shaft portion 48d, and the second lower rotating shaft portion 49d are provided. Since they have the same axis, the air volume adjusting device 45 can be downsized. Further, in this air volume adjusting device 45, the second rotating shaft portion constituting the second damper 49 is composed of the second upper rotating shaft portion 49c and the second lower rotating shaft portion 49e, The first rotating shaft portion constituting the first damper 48 includes a first upper rotating shaft portion 48b and a first lower rotating shaft portion 48d, and is supported at two points. The first and second dampers 48 and 49 can rotate in a stable state.

  In the above embodiment, as explained at the beginning, the air volume adjusting device 45 according to the present invention is connected to the branch exhaust pipes 29, 30, 31 connected to the residential ventilation device 2 constituting the residential ventilation system. .. Have been described with reference to the drawings, but the present invention is not limited to those arranged in the house 1, but various structures such as offices and factories, and gas are supplied or discharged. It may be arranged in a mechanical device or a plant that performs.

It is a schematic diagram which shows typically the internal structure of a house. The housing ventilator is shown, (A) is a front view of the residential ventilator, (B) is a left side view of the residential ventilator, (C) is a right side view of the residential ventilator, (D ) Is a plan view of a residential ventilator. It is a side view which shows the state by which the ventilation apparatus for houses is arrange | positioned in the closet. It is a mimetic diagram showing typically a ventilation system for houses. It is a front view which shows the state by which the air volume adjusting device was connected to the branch chamber. It is a top view of a branch chamber. It is a disassembled perspective view which shows an air volume adjustment apparatus. It is a perspective view which shows an air volume adjustment apparatus. It is a perspective view which shows a 1st damper. It is a perspective view which shows a 2nd damper. It is sectional drawing of the air volume adjustment apparatus shown in FIG. It is a top view which shows typically the positional relationship of the position of a 1st and 2nd positioning piece, and the 1st and 2nd damper main-body part. It is a top view which shows typically the other example of the positional relationship of the position of a 1st and 2nd positioning piece, and the 1st and 2nd damper main-body part. It is a perspective view which expands and shows the connection state of an air volume adjusting device and a micro differential pressure gauge. It is a front view which shows the connection state of an air volume adjusting device and a micro differential pressure gauge.

Explanation of symbols

45 Air volume adjusting device 46 1st duct 46a 1st slit 46b 2nd slit 46c One branch pipe part 47 2nd duct 47a 3rd slit 47b 4th slit 47h The other branch pipe part 47i Upper side engagement Joint portion 47l, 47m, 47n Lower side engaging portion 48 First damper 48a First damper main body portion 48b First upper rotating shaft portion 48d First lower rotating shaft portion 49 Second damper 49a Frame portion 49b Second damper main body 49c Second upper rotating shaft 49d Second lower rotating shaft

Claims (3)

An air volume adjusting device comprising a duct and a damper for adjusting the air volume of the gas flowing in the duct,
The damper serves as an axis when being rotated, and a first damper formed with a first rotating shaft portion whose tip side is exposed to the outside of the duct, and the first rotation. the distal end side and having the same axis and shaft portion and a second damper second rotary shaft portion formed by exposing the outer portion of the duct is formed,
In a state where the rotation of the first or second damper gas in the duct is can flow, it becomes configured such that air flow is regulated by the rotation of the second or the first damper, the The duct is formed in a cylindrical shape, the first damper is formed in a disk shape, a first positioning piece is formed on the first rotating shaft portion, and the second damper is A semi-circular plate portion formed in a semi-circular shape is provided, a second positioning piece is formed on the second rotating shaft portion, and the first outer peripheral surface of the duct is provided with the first A first engagement portion that is arranged in a circular arc around the rotation shaft portion of the first engagement portion and engages with the first positioning piece, and a parallel arrangement in an arc shape around the second rotation shaft portion. Kazeryoucho which the second positioning piece will be to the second engagement portion which engages, characterized in that is formed Apparatus. The duct has a first duct formed with one slit through which the first rotation shaft portion or the second rotation shaft portion is inserted, and a diameter larger than the outer diameter of the first duct. A second duct having the inner diameter and having the other slit through which the first rotation shaft portion or the second rotation shaft portion is inserted;
The first engagement portion and the second engagement portion are formed in either the first duct or the second duct,
The first damper and the second damper may be configured such that the first rotating shaft portion constituting the first damper or the second rotating shaft portion constituting the second damper includes the one slit and the other damper. 2. The air volume adjusting device according to claim 1, wherein the air volume adjusting device is inserted into both of the slits and sandwiched between the first duct and the second duct . The second damper includes a ring-shaped frame portion that is rotatably fitted in the duct, a semicircular closed portion that closes substantially half of the ring-shaped frame portion, and the ring-shaped frame portion. A second upper rotating shaft portion standing from the upper end, a second lower rotating shaft portion depending from the lower end of the ring-shaped frame portion, and an outer peripheral surface of the second upper rotating shaft portion And the second positioning piece formed in a direction orthogonal to the length direction of the second upper rotation shaft portion,
The second upper rotating shaft portion and the second lower rotating shaft portion are the second rotating shaft portions, and the second upper rotating shaft portion and the second lower rotating shaft portion are At least one of them is formed into a C-shaped horizontal section,
The first damper includes a disk part that is rotatably fitted in the ring-shaped frame part and is formed into a disk shape, and stands up from the upper end of the disk part, and the middle part is the first part. A first upper rotating shaft portion inserted into the upper rotating shaft portion, and a first upper shaft extending from the lower end of the disk portion and inserted into the second lower rotating shaft portion. 3. The lower rotating shaft portion of claim 1, wherein the first upper rotating shaft portion and the first lower rotating shaft portion are the first rotating shaft portion . Air volume control device.