JP2009036398A - Ventilation system for dwelling house - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new ventilation system for a dwelling house capable of very quickly adjusting necessary ventilatory volume of each room and actual ventilatory volume, and sufficiently contributing on energy-saving. <P>SOLUTION: A ventilation device 2 for a dwelling house is disposed in a closet 3 disposed in a specific room of a plurality of rooms in the dwelling house 1, and connected with branched discharge pipes 29, 30, 31, ... connected with indoor air supply openings 22 for dividing and supplying the air into each of the rooms, and an air volume adjusting device 45 is connected with the branched discharge pipes 29, 30, 31, ... in a state of being exposed in the closet 3. The air volume adjusting device 45 comprises first and second dampers 48, 49, first and second rotating shafts 48b, 48d, 49c, 49e concentric to each other, first and second positioning pieces 48c, 49d formed on each of the rotating shafts, and first and second engagement portions 47i, 47l, 47m, 47n engaged with the first and second positioning pieces. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a residential ventilation system that performs ventilation while collecting thermal energy of air exhausted from a house such as a detached house or an apartment house.

  In recent years, in order to prevent or alleviate the adverse effects on human bodies caused by chemical substances such as formaldehyde contained in the building materials of houses, it is obliged to install predetermined ventilation facilities in houses that meet certain requirements. 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 air that has been warmed or cooled in the house is discharged to the outside, which contradicts the demand for energy saving. Therefore, conventionally, the purpose of this is to effectively recover heat energy by releasing the air in the house to the outside by installing such ventilation equipment and exchanging heat with the outside air introduced into the house. Ventilation devices have been proposed. (See Patent Document 1).

The ventilator according to Patent Document 1 includes an outside air flow inlet into which outside air flows, an indoor air supply port that supplies the outside air flowing in from the outside air flow inlet to the room, an indoor air inlet through which room air flows, The indoor air outlet that discharges the indoor air flowing in from the indoor air inlet to the outside of the house, the air from the external air inlet to the indoor air supply port, and the indoor air inlet to the indoor air outlet. A heat exchanging element that exchanges heat with the air reaching, a first ventilation fan that drives the air flowing in from the external air flow inlet to reach the indoor air supply port, and the air flowing in from the indoor air flow inlet A second ventilation fan that is driven to reach the indoor air outlet. Therefore, according to the residential ventilation system using this device, it is possible to perform so-called planned ventilation while suppressing energy loss by the heat exchanger.
JP 2006-284049 A

  By the way, when performing such planned ventilation, it is necessary to reduce the pressure loss of the entire ventilation system as much as possible in order to reduce the power consumption of the ventilation fan (ventilation fan) that constitutes the ventilation device while ensuring the necessary ventilation volume. is there.

  Therefore, conventionally, a method of calculating the air volume from the air supply port by equalizing the duct length supplied from the ventilator to each room to ensure an optimal ventilation amount in each room (hereinafter referred to as the first method). Ventilation volume by increasing the capacity and output of the ventilation fan built into the residential ventilation system, or by appropriately operating and adjusting the valves, flaps, or dampers located at the outlets in each room A method (hereinafter, referred to as a second method) for changing the above is adopted.

When the second method is specifically described in detail, for example, the following method is adopted based on the premise described below. As shown in FIG. 16, four rooms A... D are provided in the house, and these rooms A. residential ventilator X are arranged, it is connected by a duct a ₁ ··· D ₁ and the residential ventilation system X and each room a · · · D. The pressure loss (value calculated from the duct length, bending, etc.) of these ducts A ₁ ... D ₁ is, for example, 20 Pa in room A, 40 Pa in room B, 60 Pa in room C, and 80 Pa in room D. . The residential ventilation device X has a built-in ventilation fan (not shown). When the ventilation volume by the ventilation fan is 200 m ³ / h, the ventilation volume supplied to each room A. when measured Te assumed, that in the room a ^{80 m} 3 / h, in rooms B ^{60 m} 3 / h, in the room C ^{40 m} 3 / h, room became D in ^{20 m} 3 / h and (measured value). On the other hand, ventilation required for each room A · · · D is in the room A ^{60 m} 3 / h, in rooms B ^{40 m} 3 / h, room C, ^38m 3 / h, and room D in ^{28 m} 3 / h (Necessary ventilation) In this case, when the measured value is compared with the necessary ventilation, the rooms A and C satisfy the necessary ventilation, but the room D does not. Therefore, conventionally, the necessary ventilation amount is secured by one of the following two methods. The first method (hereinafter referred to as the method 2-1) is a method of changing the ventilation amount by the ventilation fan from 200 m ³ / h to 300 m ³ / h. According to the 2-1 method, in each room A 120 m ³ / h, in the room B ^90m 3 / h, in the room C ^{60 m} 3 / h, respectively ventilation to ^{30 m} 3 / h in room D changes At the same time, the necessary ventilation volume is satisfied in all the rooms A ... D, and fine adjustment work described later is not necessary.

On the other hand, another method (hereinafter referred to as method 2-2) blows out the ends of the ducts A _{1 to} D ₁ that connect the rooms A to D and the residential ventilation device X. This is a method of appropriately operating and adjusting a damper or the like (not shown) disposed in the mouth. That is, in the method of 2-2, the ventilation value of the room (for example, the rooms A, B, and C) in which the measured value exceeding the required ventilation is measured by the anemometer is within a range that does not fall below the required ventilation. This is a method of increasing the ventilation amount of the room D below the necessary ventilation amount by appropriately operating and adjusting the damper and the like. According to the method 2-2, not only the capacity / output of the ventilation fan does not need to be changed, but also the ventilation volume that greatly exceeds the required ventilation volume of each of the rooms A ... D is eliminated. It can also contribute greatly to

  However, each of the above-described methods has problems described below and cannot be employed. That is, in the method (first method) in which the duct length supplied from the ventilator to each room is made uniform (first method), the arrangement position of the ventilator is limited and the degree of freedom in designing the ventilation system of the entire house which is individually different is large. Be constrained. In addition, in the above-mentioned method 2-1, it is practically impossible to precisely change the adjustment of the capacity and output of the ventilation fan, and in this method, the ventilation amounts of the rooms A, B and C satisfying the necessary ventilation amount are not obtained. Since it increases more than necessary, combined with an increase in the power consumption of the ventilation fan, the heat loss is extremely large and enormous running costs are required. Therefore, the method 2-1 greatly inhibits energy saving. In the above method 2-2, although it is a method that contributes to energy saving, the necessary ventilation amount in each room A ... D is finally obtained by appropriately operating and adjusting the above-described dampers and the like. And the work which makes the ventilation quantity by the measured value the same numerical value is very troublesome, long time is unavoidable. That is, in the method 2-2, for example, when a damper or the like disposed in the room A is operated, the ventilation amounts of the other rooms B, C, and D also change, and the ventilation amount of the room B, for example, changes accordingly. Since the ventilation amount in the room A also changes again, the movement and measurement to each room must be repeated many times, and unreasonable effort is imposed on the operator. Moreover, in the above example, only four rooms A... D are taken as an example, but assuming that it is normal that a normal house has a larger number of rooms than the above example, its labor And the cost is enormous.

  Therefore, the present invention has been proposed in order to solve the various problems of the conventional residential ventilation system described above, and can adjust the required ventilation amount and the actual ventilation amount of each room very quickly. The purpose is to provide a new residential ventilation system that can contribute to energy saving.

  In order to achieve the above-described object, a first invention (invention according to claim 1) includes an external air flow inlet through which external air flows, an indoor air supply port for supplying the external air flowing in from the external air flow inlet into the room, An indoor air inlet through which indoor air flows, an indoor air outlet through which the indoor air flowing in from the indoor air inlet is released to the outside of the house, and air from the external air inlet to the indoor air supply port A heat exchange element for exchanging heat with the air from the indoor air inlet to the indoor air outlet, and a first ventilation fan that drives the air flowing in from the external air inlet to the indoor air supply port. A residential ventilation system using a residential ventilation system, comprising: a second ventilation fan that drives the air flowing in from the indoor air inlet to reach the indoor air outlet, the residential ventilation system Formed in a house And a branch discharge pipe group that divides and supplies air into each room is connected to the indoor air supply port. Each of the branch discharge pipes constituting the branch discharge pipe group has an air volume adjusting device including a duct and an air volume adjusting means arranged in these ducts to adjust the air volume of the air flowing through the duct. The air volume adjusting device is connected in an exposed state in the closet, and the air volume adjusting device is formed in a disk shape, and the first damper is rotated on the first damper. A first rotation shaft that is exposed to the outside of the first duct, a first positioning piece formed on the first rotation shaft, Arranged on the outer peripheral surface of the duct in an arc shape around the first rotation axis. A first engaging portion with which the first positioning piece engages, a second damper formed in a semicircular shape, and the first rotating shaft formed on the second damper. A second rotating shaft having the same axial center as that exposed at the outer side of the duct, a second positioning piece formed on the second rotating shaft, and an outer periphery of the duct And a second engaging portion that is formed on the surface and engages with the second positioning piece.

  In addition, although the residential ventilation apparatus which comprises the said 1st invention needs to be arrange | positioned in the closet formed in the specific room, even if it is the first floor, this specific room is 2 It may be a floor or, in some cases, a corridor. Moreover, the closet needs to be provided with members that can be opened and closed such as doors or doors or curtains. In addition, the branch discharge pipe group in which the air volume control device is disposed may be, for example, one in which one end is fixed to a branch chamber attached to the residential ventilation device, or one end is the residential ventilation. A branch duct may be further fixed to the other end of a single or a plurality of branch ducts fixed to the apparatus, and finally the number may be 4 to 10, for example. However, in the present invention, since the air volume adjusting device needs to be disposed in an exposed state in the closet, the branch pipe section groups are respectively fixed to branch chambers connected to the indoor air supply port. It is preferable. Furthermore, the duct constituting the present invention only has to be formed with a portion serving as a flow path through which air flows inside, and the shape may not necessarily be circular (cylindrical), and is not single. For example, as in the second invention (the invention described in claim 2), a plurality of ducts may be combined.

  The air volume adjusting means includes a first damper formed in a disc shape, and an axial center when the first damper is formed on the first damper and the tip side is A first rotating shaft exposed to the outside of the duct, a second positioning piece formed on the first rotating shaft, and the first rotating shaft centered on the outer peripheral surface of the duct Are arranged in parallel with each other in a circular arc shape and are engaged with the first positioning piece, a second damper formed in a semicircular shape, and a second damper formed on the second damper. A second rotating shaft having the same axis as the first rotating shaft and having the tip side exposed to the outside of the duct, and a second positioning piece formed on the second rotating shaft And a second engaging portion that is formed on the outer peripheral surface of the duct and engages with the second positioning piece.

  According to such an air volume adjusting means, first, the first damper disposed in the duct is rotated by rotating the first rotating shaft or the first positioning piece. The air volume is adjusted according to the degree of rotation of the damper. The first positioning piece for positioning the rotation position of the first damper and the first engagement portion with which the first positioning piece engages are formed in an arc shape around the first rotation axis. Since the first damper that has been rotated is positioned in parallel, the first damper is positioned at a predetermined position by the engagement of the first positioning piece and the first engaging piece at an arbitrary position. The rotation position does not change. In order to speed up the air volume adjustment work, for example, “1, 2, 3,...” Or the like in the vicinity of the engaging portion arranged in a circular arc shape around the first rotation shaft. A display sticker displaying a number such as “a, b, c...” Or “a, b, c...” Or the like may be affixed or engraved.

  Further, in the first invention, not only the air volume is adjusted by rotating the first damper, but also the second damper is rotated in the state where the first damper is opened. As a result, the air volume is further adjusted. The second damper is positioned by the engagement between the second positioning piece and the second engaging portion. The first rotation shaft and the second rotation shaft need to have the same axis, but for example, the first rotation shaft is formed into a rod shape, while the second rotation shaft is formed. A moving shaft is formed in a cylindrical shape, and the first rotating shaft is inserted into the second rotating shaft, or conversely, the first rotating shaft is formed into a cylindrical shape, The two rotation shafts may be formed into a rod shape, and the first rotation shaft may be inserted into the second rotation shaft so that the axes are the same.

  Further, according to a second invention (invention according to claim 2), in the first invention, each duct connected to the branch discharge pipe group has the first rotating shaft or the second rotating shaft. A first duct in which one slit is formed and an inner diameter that is larger than the outer diameter of the first duct, and the first rotating shaft or the second rotating shaft. And a second duct in which the other slit is formed, and the first engaging portion and the second engaging portion are formed in the first duct or the second duct. In addition, the first damper and the second damper may be configured such that the first rotating shaft constituting the first damper or the second rotating shaft constituting the second damper includes the one slit and the other damper. It is inserted through both the slit and sandwiched between the first duct and the second duct. It is an feature.

  The one and other slits are portions through which the first rotation shaft or the second rotation shaft is inserted, and as described above, the first rotation shaft is formed into a rod shape, In the case where the second rotation shaft is formed in a cylindrical shape and the rotation shaft is inserted through the second rotation shaft, it corresponds to the outer diameter of the second rotation shaft. On the contrary, the first rotation shaft is formed into a cylindrical shape, while the second rotation shaft is formed into a rod shape, and the first rotation shaft is formed into the second rotation shaft. If the shaft is inserted, it must correspond to the outer diameter of the first rotating shaft.

  According to the residential ventilation system according to the first aspect of the invention (invention of claim 1), it is possible not only to ventilate while suppressing energy loss by the heat exchange element, but also to realize the following remarkable effects. can do.

  That is, according to the first aspect of the present invention, the air volume adjusting device is arranged in each of the branch discharge pipe groups that supply the outside air introduced into the residential ventilation device into each room, and the air volume adjusting device is arranged in each room. Therefore, the air volume adjustment work by the air volume adjustment device can be operated at one place. Therefore, according to the present invention, the air volume in each room can be adjusted very simply and quickly. Moreover, according to this invention, in order to raise the ventilation volume of a specific room, it is not necessary to increase the ventilation volume of another room more than necessary by raising the output of the ventilation fan, which contributes to energy saving. be able to.

  Further, in the present invention, the first damper that is the air volume adjusting means can be rotated by rotating the first rotating shaft or the first positioning portion, and the rotating operation can be performed. Since the position of the first damper that has been made is maintained by the engagement between the first positioning piece and the first engagement portion, the air volume is not changed by the wind pressure from the residential ventilation device. . In addition to the first damper, the air volume adjusting means adjusts the air volume more precisely by rotating the second damper in a state where the first damper is fully or partially opened. can do. In particular, in the range from the fully open state to the state where the first damper is rotated by 40 degrees, the first damper is not affected by the adjustment of the air volume even if the damper is slightly rotated (the adjustment of the air volume is extremely high). Therefore, by using the second damper as a constituent element, the air volume can be adjusted very precisely within the above range. Moreover, since the second damper is positioned by the engagement of the second positioning piece and the second engaging portion, the air volume is not changed by the wind pressure from the residential ventilation device.

  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 body and the second damper body are connected to the first duct. The first rotating shaft constituting the damper main body or the second rotating shaft constituting the second damper main body is inserted through both the one slit and the other slit, and the first duct Since it is sandwiched by the second duct, the manufacture of the duct is simplified and can be easily assembled, and the maintenance work is also simplified.

  Hereinafter, a residential ventilation system according to the best mode for carrying out the present invention will be described in detail and specifically with reference to the drawings. The residential ventilation system according to this embodiment is an application of the present invention to a two-story house.

  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.

  Further, the top plate 19 constituting the housing 10 of the residential ventilation device 2 is formed with first to fourth openings (not shown). As shown in FIG. First to fourth tube bodies 20... 23 are fixed to the four openings. 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 will be described in detail below.

  As shown in FIGS. 7, 8, and 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. These third and fourth slits 47a and 47b are the other slits constituting the present invention, and the width of each of them is the same as that of the first and second slits 46a and 46b. The lengths of the fourth 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. 10, a frame portion 49a formed in a ring shape, A second damper main body 49b that is formed in a substantially semicircular shape by closing about half of the frame 49a, a second upper rotating shaft 49c that stands up from the upper end of the frame 49a, A second positioning piece 49d extending in a direction perpendicular to the length direction of the second upper rotation shaft portion 49c from the side of the second upper rotation shaft portion 49c, and the lower end of the frame portion 49a. The second upper rotation shaft portion 49e is located on the extension line of the second upper rotation 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. 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 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 procedure is followed. Then, the air volume adjustment work of the other 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, according to the residential ventilation system according to the above-described embodiment, the necessary ventilation amount and the actual ventilation amount of each room can be adjusted very quickly at a specific position called the closet 3 of the house. , It can contribute to energy saving. That is, according to this residential ventilation system, from the branch discharge pipes 29, 30, 31,... For supplying the outside air flowing into the house ventilation device 2 from the outside air inflow pipe 27 to each room, respectively. Each room with different required ventilation can be supplied with the optimal amount of air, and the required ventilation of a specific room increases more than necessary, as with conventional residential ventilation systems. Therefore, the power consumption of the air supply fan 25 and the exhaust fan 26 is not increased, and heat loss can be suppressed. As a result, the running cost can be reduced. , Can greatly contribute to energy saving. Moreover, in this residential ventilation system, the residential ventilation device 2 is suspended from the ceiling 4 by a hanging tool (not shown) in the closet 3 closed by the open / close door 8, and is not disposed on the ceiling. Therefore, the air volume adjustment work by each air volume adjusting device 45 using the fine differential pressure gauge 51 is very simple. Further, by opening the maintenance cover 14 provided in front of the residential ventilation device 2, the air filter 17 can be easily attached and detached even by the user (homeowner) of the residential ventilation device 2. be able to. In other words, many conventional residential ventilation devices are located behind the ceiling, so even if the air filter is a component, the air filter is not frequently replaced, and dust removal is possible. Not only is the function gradually reduced, but even if the required ventilation volume and the actual ventilation volume are the same at the beginning of installation, these ventilation volumes are gradually changing. According to the system, since the air filter 17 can be frequently replaced, it is possible to prevent a difference between the necessary ventilation amount and the actual ventilation amount without deteriorating the dust removing function. can do. Further, in this residential ventilation system, the residential ventilation device 2 is disposed not in the ceiling but in the closet 3, and the outer wall 6 is located on the back side of the residential ventilation device 2. Since the base end of the outside air inflow pipe 27 for introducing outside air into the inside is fixed to the fourth tube body 20 formed on the outside wall 6 side and exposed in the closet 3, the outside air to which the most dust is attached. The inflow pipe 27 can be easily replaced.

  In the above embodiment, when the air volume is adjusted, a fine differential pressure gauge 51 is connected to the air volume adjusting device 45 via each connection tube (not shown) and the connection adapter 50. Although the method of adjusting the air volume while measuring with the differential pressure gauge 51 has been described, the present invention may adjust the air volume by the method described below without necessarily using the fine differential pressure gauge 51. That is, the outputs of the air supply fan 25 and the exhaust fan 26, the duct diameters, duct areas, and duct lengths of the branch discharge pipes 29, 30, 31,... Repeat the experiment using data on the number of duct bends, coefficient of friction of each duct, etc. and all other members that make up the path of air from the residential ventilation system 2 to the room. Of setting the first damper main body 48a and / or the second damper main body 49b necessary for securing a sufficient ventilation amount in advance and adjusting each house so as to be the set angle May be adopted. In addition, the residential ventilation system according to the above embodiment has been illustrated and described as applied to a two-story house. However, the residential ventilation system may be applied to a one-story house. good. Moreover, although the closet 3 in which the residential ventilator 2 is disposed is provided in a specific room, the residential ventilator 2 may be disposed, for example, in a closet provided in a hallway (not shown).

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. In the conventional residential ventilation system, it is a schematic diagram which shows typically the connection state of each room and a ventilation fan.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Residential 2 Residential ventilator 3 Closet 8 Opening and closing door 20 1st pipe body (external airflow inlet: OA)
21 Second tube (indoor air inlet: RA)
22 Third tube (indoor air supply port: SA)
23 Fourth tube (indoor air outlet: EA)
27 Outside air inflow pipe 28 Indoor air suction pipe 29, 30, 31... Branch discharge pipe 32 Branch chamber 33 Indoor air exhaust pipe 45 Air flow control device 46 First duct 46a First slit 46b Second slit 46c Branch pipe part 47 Second duct 47a Third slit 47b Fourth slit 47h The other branch pipe part 47i Upper side engaging parts 47l, 47m, 47n Lower side engaging parts 48 First damper 48a First damper Main body portion 48b First upper rotation shaft portion 49 Second damper 49a Frame portion 49b Second damper main body portion 49c Second upper rotation shaft portion 51 Slight differential pressure gauge 52 One connection tube 53 The other connection tube 54 One upstream connection tube 55 One downstream connection tube

Claims (2)

An outside air flow inlet into which the outside air flows, an indoor air supply port for supplying the outside air flowing in from the outside air flow inlet into the room, an indoor air inlet into which the room air flows in, and a room air flow in from the room air inlet. Heat exchanging heat between the indoor air outlet that releases air to the outside of the house, the air from the external airflow inlet to the indoor air supply port, and the air from the indoor air inlet to the indoor air outlet. An exchange element, a first ventilation fan that drives the air flowing in from the outside air flow inlet to reach the indoor air supply port, and a first fan that drives the air flowing in from the indoor air inlet to the indoor air outlet. A residential ventilation system using a residential ventilation device comprising two ventilation fans,
The residential ventilator is arranged in a closet formed in a specific room among a plurality of rooms formed in the house,
A branch discharge pipe group that divides and supplies air into each room is connected to the indoor air supply port,
Each branch discharge pipe constituting the branch discharge pipe group has an air volume adjusting device including a duct and an air volume adjusting means arranged in these ducts to adjust the air volume of the air flowing through the duct. Connected in the closet exposed,
The air volume adjusting device includes a first damper formed in a disc shape, and an axial center when the first damper is formed on the first damper and the tip side is the first damper. A first rotating shaft exposed outside the duct, a first positioning piece formed on the first rotating shaft, and the first rotating shaft on the outer peripheral surface of the duct. A first engagement portion that is arranged in a circular arc shape at the center and engages with the first positioning piece, a second damper that is formed in a semicircular shape, and a second damper that is formed on the second damper. A second rotating shaft having the same axis as the first rotating shaft and having the tip side exposed to the outside of the duct, and a second positioning formed on the second rotating shaft And a second engaging portion that is formed on the outer peripheral surface of the duct and engages with the second positioning piece. Residential ventilation system. Each duct connected to the branch discharge pipe group includes a first duct formed with one slit through which the first rotating shaft or the second rotating shaft is inserted, and the first duct. A second duct having an inner diameter that is larger than an outer diameter and having the other slit through which the first rotating shaft or the second rotating shaft is inserted;
The first engaging portion and the second engaging portion are formed in the first duct or the second duct, and
The first damper and the second damper are configured such that the first rotating shaft constituting the first damper or the second rotating shaft constituting the second damper includes the one slit and the other slit. 3. The residential ventilation system according to claim 2, wherein the residential ventilation system is inserted into both of the first duct and the second duct, and is sandwiched between the first duct and the second duct.