JPH0861733A - Heat exchange ventilator - Google Patents

Abstract

PURPOSE: To prevent the pressure loss of the air and the.increase of noise due to the loss by partitioning an outdoor air introducing inlet by a plurality of duct joints having different opposing intervals from an exhaust port, and disposing an air supply blower at a position where the outdoor air can be selectively sucked from the joints. CONSTITUTION: The outdoor air introducing inlet OA is partitioned by a plurality of duct joints 18A, 18B, 18C having different opposing intervals from an exhaust port EA, and an air supply blower 30 is disposed at a position where the outdoor can be selectively sucked from the joints 18A, 18B, 18C. Accordingly, the joints 18A, 18B which are nearest to an air supply duct SD mounted on a wall are selected, and the duct SD can be connected to the joints 18A, 18B, and hence the bents of the duct SD and exhaust duct ED can be reduced. Thus, the pressure loss of the air in the ducts SD, ED can be suppressed, and noise upon rotation of air supply and exhaust blowers 30, 40 can be suppressed.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a heat exchange ventilator,
More specifically, the present invention relates to a heat exchange ventilation device of a type in which ducts are connected to an outdoor air introduction port for introducing outdoor air and an exhaust port for exhausting indoor air, respectively.

[0002]

2. Description of the Related Art Generally, as a heat exchange ventilation device of this type,
It is widely known that a box-shaped casing is provided, and a heat exchange element, an air supply blower, and an exhaust air blower are housed in the casing (for example, JP-A-2-29).
8746, JP-A-2-298747, etc.).

The casing has an outdoor air introducing port for introducing the outdoor air into the casing and a supply port for supplying the introduced outdoor air into the room. It has an indoor air introduction port for introducing into the inside, and an exhaust port for discharging the introduced indoor air to the outside, and an air supply path from the outdoor air introduction port to the supply port, and an indoor air introduction port. An exhaust path leading to the exhaust port is internally partitioned.

The outdoor air inlet and outlet are divided by a duct joint. An air supply duct and an exhaust duct that penetrate through the wall are connected to each duct joint, and the outdoor air introduction port and the exhaust port communicate with the outside via these ducts. Here, particularly in the case of a ceiling-hanging type heat exchange ventilator, in consideration of aesthetics, it is constructed by setting a narrow interval between the outdoor air introducing port and the exhaust port and the wall.

By the way, when the air discharged from the above-mentioned outlet is introduced into the outdoor air inlet (hereinafter, this phenomenon is referred to as "short circuit"), sufficient ventilation can be naturally performed. Disappear. Therefore, conventionally, the gap between the air supply duct and the exhaust duct is set wide (for example, 600 mm) to prevent a short circuit.

Apart from this, there is also a duct capable of preventing a short circuit. When such a duct is adopted, it is possible to set the gap between the air supply duct and the exhaust duct to be narrow (for example, 300 mm).

[0007]

As described above, the distance between the air supply duct and the air exhaust duct, which should be connected to the outdoor air introduction port and the exhaust port, is different as described above, and therefore, it is not necessary during construction. I often bent that duct. For this reason, the pressure loss of the air has increased, and the noise accompanying it has also increased.

Further, when the ceiling-suspended heat exchange ventilator is installed in a room, it is preferable to set a narrow interval between the outdoor air introduction port and the exhaust port and the wall in terms of appearance. However, in the above-described conventional configuration, since it is necessary to pipe the duct in a bent state, the outdoor air introduction port and the exhaust port can be brought close to the wall surface only at an interval allowing the bending of the duct.

The present invention has been made in view of the above problems, and it is possible to prevent pressure loss and increase in noise accompanying it, and to mount the outdoor air introduction port and the exhaust port as close to the wall surface as possible. The purpose is to provide a heat exchange ventilator capable.

[0010]

In order to solve the above-mentioned problems, the structure according to claim 1 of the present invention has an outdoor air introduction port for introducing the outdoor air into the room and the indoor air to the outside. An air supply path that has an exhaust port on the same end wall for exhausting and that supplies the air introduced from the outdoor air introduction port to the room, and an exhaust path that circulates the indoor air that should be exhausted from the exhaust port Is formed into a substantially polygonal columnar shape by stacking a large number of rectangular unit members and a casing that divides the unit member inside, and the unit members are housed in the casing in a posture in which the stacking direction is horizontal and the air supply A heat exchange element that partitions an outdoor air flow passage that communicates with the passage and an indoor air flow passage that communicates with the exhaust passage in a direction orthogonal to the stacking direction, and the heat exchange element are continuously provided in the casing along the stacking direction. With A fan casing having a fan impeller whose center of rotation extends vertically in the casing, and a substantially arc-shaped inner surface that covers the fan impeller, and defines a path of air blown out from the fan impeller by the inner surface. And an air supply blower for sucking the outdoor air from the outdoor air introduction port to form an air supply flow in the air supply path and an exhaust flow in the exhaust path to discharge the indoor air from the exhaust air to the outdoor air. In the heat exchange ventilator, which is equipped with an exhaust blower and which is connected to the air supply duct to the outdoor air introduction port and is attached indoors in a state where the exhaust duct is connected to the exhaust port, the outdoor air introduction port is The air supply blower is divided by a plurality of duct joints having different facing intervals with respect to the exhaust port, and the air supply blower is arranged at a position where the outdoor air can be selectively sucked from each duct joint. It is a heat exchange ventilator according to claim is.

According to a second aspect of the present invention, in the heat exchange ventilator according to the first aspect, the fan casing of the air supply blower is placed at a position apart from the end wall by a gap. There is something. According to a third aspect of the present invention, in the heat exchange ventilator according to the first or second aspect, the fan casing of the air supply blower has a suction port for sucking outdoor air and each duct joint for the suction port. And a communication surface that communicates with each other.

According to a fourth aspect of the present invention, there are provided the first and second aspects.
In the heat exchange ventilator according to 2 or 3, the exhaust port is partitioned by a duct joint, and at least one of the duct joints partitioning the exhaust port and the outdoor air introduction port has the facing interval. It includes a finely adjustable adjusting means.

According to a fifth aspect of the present invention,
In the heat exchange ventilator according to 2, 3, or 4, the air supply blower has a stacking direction of the heat exchange elements along a direction in which the air blowing flow intersects the stacking direction from between both fan impellers. It is directed to the substantially central portion of.

In the heat exchange ventilator according to the fifth aspect of the present invention, the blower provided in the casing for blowing out air to the heat exchange element may blow out the blown air. It further comprises a guide member for guiding the substantially central portion.

According to a seventh aspect of the present invention, in the heat exchange ventilator according to the sixth aspect, the guide member guides the blown air along the tangential direction of the inner surface of the fan casing. is there.

[0016]

According to the structure of claim 1, the outdoor air can be selectively introduced from a plurality of duct joints at the time of construction. Therefore, the duct joint closest to the air supply duct mounted on the wall should be installed. It is possible to select and connect the air supply duct to this duct joint. Further, since the air supply blower is disposed at a position where the outdoor air can be selectively sucked from each of the duct joints, the outdoor air can be evenly sucked from any of the duct joints.

According to the second aspect of the present invention, the fan casing of the air supply blower can be separated from each duct joint to make a path for guiding the air introduced from the duct joint into the fan casing. Further, in the configuration according to claim 3, the outdoor air introduced from any one of the duct joints is guided to the communication surface and guided to the suction port of the fan casing.

Further, in the structure according to the fourth aspect, at least one of the duct joints for partitioning the outdoor air introduction port or the exhaust port can be finely adjusted at the time of construction. In the configuration according to claim 5, when the air supply blower is operated, the air blown from the air supply blower is in a direction intersecting the stacking direction of the heat exchange elements from between the fan impellers. Is blown out to a substantially central portion of the heat exchange element. In addition, since a blowout flow is formed in the central portion in a direction intersecting with the stacking direction of the heat exchange elements, a sufficient route for the blowout flow to be statically pressured is traced to the center of the heat exchange element. Reach the part. At this time, on the end wall of the casing, a plurality of duct joints are arranged along the stacking direction of the heat exchange elements, and the plurality of duct joints define the outdoor air inlet, so that the exhaust air is exhausted. It is possible to set the facing interval of the air supply blower to the blower wide. As a result, the above-mentioned path for making the blowout flow static pressure becomes as long as the number of duct joints.

According to the sixth aspect of the invention, by providing the guide member, the air blown from the blower can reach the heat exchange element smoothly. Further, in the structure according to claim 7, since the guide member guides the blown air along the tangential direction of the inner surface of the fan casing, a smoother flow path is provided from the fan impeller to the heat exchange element. Will be partitioned between.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing a main part of a heat exchange ventilation device according to an embodiment of the present invention, FIG. 2 is a perspective view showing an appearance of the heat exchange ventilation device of FIG. 1, and FIG. 1 is a schematic cross-sectional view of the heat exchange ventilation device of 1,
4 is a bottom view showing a part of the heat exchange ventilator of FIG. 1 in a cutaway manner, and FIG. 5 is a front view of a duct joint adopted in the heat exchange ventilator of FIG. In the following description, the left side of FIG. 3 and the corresponding directions of the drawings are assumed to be the front.

First, referring to FIG. 1 to FIG. 4, the heat exchange ventilator of the present embodiment is provided with a ceiling hanging type casing 10 which is suspended while being exposed in the room.
The casing 10 is formed in a substantially box shape including end walls 11 and 12 facing each other in the front-rear direction and a bottom plate 13 having a substantially rectangular shape in a plan view. The casing 10 is provided with an outdoor air introduction port OA for introducing the outdoor air into the interior and a supply port SA for supplying the introduced outdoor air into the room, and extends from the outdoor air introduction port OA to the supply port SA. The air supply path SP is partitioned inside. Along with this, the casing 10 includes an indoor air introduction port RA that introduces indoor air into the interior and an exhaust port EA that expels the introduced indoor air to the outside, and the indoor air introduction port RA leads to the exhaust port EA. The exhaust path EP is divided into the inside.

As shown in FIG. 1, the outdoor air introduction port OA and the exhaust port EA are formed in the rear end wall 11 of the casing 10. Further, in the present embodiment, the outdoor air introduction port OA and the exhaust port EA are both partitioned by the duct joints 18A, 18B, 18C, and the outdoor air introduction port OA is parallel to the exhaust port EA in the horizontal direction. The two duct joints 18A and 18B have different facing intervals L1 and L2 from each other. One duct joint 18A is attached at the above-mentioned outlet EA.
The facing distance L1 with respect to is set to about 600 mm, and it is possible to prevent a so-called short circuit even when an ordinary inexpensive duct is adopted. The other duct joint 18B arranged between the duct joint 18A and the duct joint 18C of the discharge port EA has a facing distance L2 with the discharge port EA set to about 300 mm, so that a so-called short circuit can be prevented. Corner duct (not shown)
Is set to a position where it can be attached. Thus, in the configuration of the present embodiment, at the time of construction, the duct joint 18A (or 18B) closest to the air supply duct attached to the wall W is selected, and the duct joint 18A (or 18) is selected.
Connect the air supply duct to B) to connect each duct joint 18A,
The outdoor air can be introduced alternatively from 18B. That is, one duct joint 18A (or 18
By connecting the air supply duct to B) and closing the other duct joint 18B (or 18A), it becomes possible to selectively introduce outdoor air from each duct joint 18A, 18B. Of.

Referring to FIG. 5, each duct joint 18A-1
All of 8C are made of the same member. Each of the duct joints 18 </ b> A to 18 </ b> C includes a boss portion 181, which is connected to the duct, a flange portion 182 extended to the base end edge of the boss portion 181, and a mounting plate portion 183 for mounting the flange portion 182. There is. The flange portion 182 of the boss portion 181 is formed with notches 182A that are radially outward and are spaced apart at regular intervals in the circumferential direction.
2A is fitted to a boss 183A provided upright on the mounting plate portion 183, and then welded by spot welding 184, whereby both are integrally configured. The attachment plate portion 183 is a plate material having an outer shape of a rectangular ring, and screw holes 183B for screwing the end wall 11 of the casing 10 with screws are formed at four corners of the attachment plate portion 183. The screw hole 183B is formed in a long hole shape extending in the horizontal direction as shown in the drawing, and thereby constitutes an adjusting means capable of finely adjusting the facing distances L1 and L2. Then, the tapping screw 185 is inserted into the screw hole 183B, and the tapping screw 185 is inserted into the end wall 11.
Each duct joint 18A to 18C by being screwed into
Is fixed to the casing 10 in a state where the facing distances L1 and L2 can be finely adjusted in the horizontal direction.

Then, as shown in FIGS. 1 and 4, two duct joints 18A for partitioning the outdoor air introduction port OA,
18B (in this embodiment, the duct joint 18
An air supply duct SD is connected to A), and an exhaust duct ED is connected to an exhaust duct joint 18C partitioning the exhaust port EA. As shown in FIG. 3, each of these ducts SD and ED penetrates a wall W that partitions the room, projects from the wall surface WS, and is connected to the corresponding duct joints 18A and 18C.

The supply port SA is formed in the front end wall 12 facing the end wall 11. Therefore, the air supply path SP is divided into a substantially linear shape as seen in the cross-sectional view shown in FIG. In this embodiment, the air supply path SP
In the above, the part that divides the supply port SA is narrowed down slightly. Furthermore, the indoor air inlet RA is
It is formed on the bottom plate 13 of the casing 10. The indoor air introduction port RA is partitioned in the front portion of the bottom plate 13 and is close to the supply port SA as shown in the figure. In the present embodiment, the portion of the bottom plate 13 that defines the indoor air introduction port RA has a front portion slightly inclined upward.

Inside the casing 10, a heat exchange element 20, an air supply blower 30 and an exhaust air blower 40 are housed. The heat exchange element 20 is
It is configured by stacking a large number of unit members 21. The unit member 21 is a substantially square member integrally including a well-known partition plate and ribs, and the air is circulated parallel to one side of the unit member 21 by stacking the unit members 21 by shifting them by 90 °. The outdoor air flow passage OP,
It is formed in a substantially quadrangular prism shape that defines an indoor air flow passage RP through which air flows in parallel to the other side of the unit member 21 that is orthogonal to the one side. Each flow passage OP, RP is
It has inlets OP1 and RP1 and outlets OP2 and RP2, respectively.

In the present embodiment, the heat exchange element 20 is housed in the casing 10 such that the unit member 21 has a stacking direction L extending horizontally. At this time, the outdoor air flow passage OP of the heat exchange element 20 is along the air supply passage SP, and the outlet OP2 of the outdoor air flow passage OP faces the supply port SA in close proximity. Therefore, as shown in FIG. 3, the heat exchange element 20 is in a posture in which each side of the unit member 21 extends horizontally or vertically. On the other hand, the inlet RP1 of the indoor air flow passage RP of the heat exchange element 20 faces in close proximity to the indoor air inlet RA. As a result, in this embodiment, as shown in FIG. 2, the heat exchange element 20 can be exposed from the room by opening the decorative panel 14 attached to the supply port SA. It becomes possible to perform maintenance work such as removing dust adhering to the heat exchange element 20.

Next, the air supply blower 30 forms a supply air flow in the air supply path SP, and the exhaust air blower 40 is provided.
Is for forming an exhaust flow in the exhaust path EP. Each of the blowers 30, 40 has a motor 31, 41 as a drive source, and a rotation shaft 31A of the motor 31, 41,
The fan impellers 32 and 42 fixed to 41A and the inner surfaces 33A and 43A covering the periphery of the fan impellers 32 and 42 are included.
It is configured as a unit body including fan casings 33 and 43 that partition the paths of the air blown out from the air conditioners 2 and 42.

Referring to FIGS. 3 and 4, each blower 3
0 and 40 are rotary shafts 31A of the motors 31 and 41,
41A is vertically arranged in the casing 10, and the motors 31, 41 are connected to the fan impellers 32, 42.
Also, they are continuously provided in the casing 10 along the stacking direction L of the casing 10 while being directed to the upper side of the fan casings 33 and 43.

In the present embodiment, by adopting the above layout, the air supply blower 30 is arranged in the air supply path SP on the upstream side of the heat exchange element 20. On the other hand, the exhaust blower 40 is arranged in the exhaust path EP on the downstream side of the heat exchange element 20. Further, the fan casing 33 of the air supply blower 30 is arranged at a position separated from the end wall 11 by a gap S. At the same time, the fan casing 33 defines a suction port 33B for sucking outdoor air in the path defined by the inner surface 33A. In addition, the outer surface of the fan casing 33 has communication surfaces 33C and 33E that connect the duct joints 18A and 18b to the suction port 33B.

In the air supply blower 30 described above, the air blowing flow thereof is, as shown by the arrow A in FIG.
The lamination direction L of the heat exchange element 20 from between 2 and 42
Is directed to a substantially central portion in the stacking direction L of the outdoor air flow passage inlet OP1 partitioned by the heat exchange element 20 along a direction intersecting with the. Further, in this embodiment, a partition plate 15 as a guide member is attached to the casing 10. The partition plate 15 is
The air blower 30 for air supply guides the air blown to the substantially central portion, and guides the blown air along the tangential direction of the inner surface 33A of the fan casing 33. More specifically, the partition plate 15
Extends slightly closer to the exhaust blower 40 side than the central portion of the heat exchange element 20. As a result, the partition plate 15 defines the blowout path SP1 in a state where the opening area becomes wider as it goes downstream, and the main flow of the air blown out from the fan impeller 32 for air supply is the heat exchange element. It is adapted to be diffused in the central portion of 20. At this time, a plurality of duct joints 18A, 18B are arranged on the end wall 11 of the casing 10 along the stacking direction L of the heat exchange element 20, and the plurality of duct joints 18A, 18B introduce outdoor air. Since the mouth OA is partitioned, it is possible to set the facing interval of the air supply blower 30 with respect to the exhaust blower 40 to be wide. As a result, the path SP1 for staticizing the blowout flow is lengthened by the number of the duct joints 18A and 18B.

With the configuration described above, during construction,
Since the outdoor air can be selectively introduced from the plurality of duct joints 18A and 18B, the duct joint 18A (or 18B) closest to the air supply duct SD attached to the wall W is selected, and this duct is selected. Joint 18A (or 18
It is possible to connect the air supply duct SD to B).
In addition, the air supply blower 30 is provided with the duct joints 18A and 18A.
Since it is arranged at a position where the outdoor air can be sucked in alternatively from B, the outdoor air can be evenly sucked in from any of the duct joints 18A and 18B. Therefore, according to the present embodiment, the air supply duct SD and the exhaust duct E
As a result that it can be installed in a state where there is little bending of D,
There is an advantage that pressure loss in both ducts SD and ED can be suppressed. Further, in order to compensate for the pressure loss, it is not necessary to set the rotation speed of each of the blowers 30 and 40 to be large, so that it is possible to suppress noise and suppress an increase in power consumption. There are advantages. Also,
Since it is possible to bring the casing 10 as close as possible to the wall surface WS, in the case of the ceiling-suspended heat exchange ventilator described above, the casing 10 is brought close to the wall surface WS to improve the appearance. There is also an advantage that it can be improved.

Further, in the configuration of this embodiment, the fan casing 33 of the air supply blower 30 has the duct joints 18A,
By separating from 18B, duct joints 18A, 18B
Since it is possible to make a path for guiding the air introduced into the fan casing 33 into the fan casing 33, there is an advantage that the pressure loss can be further reduced. Further, the outdoor air introduced from either one of the duct joints 18A and 18B is guided by the communication surfaces 33C and 33E and guided to the suction port 33B of the fan casing 33. It is possible to suppress the resulting noise.

Further, in the configuration of this embodiment, the duct joints 18A to 18A for partitioning the outdoor air introduction port OA or the exhaust port EA are used.
Since at least one of 18C can be finely adjusted at the time of construction, there is an advantage that the casing 10 can be brought closer to the wall surface WS in a state where the pressure loss is further reduced. That is, the center of the opening provided in the wall surface WS and the center of the outdoor air introduction port OA (or the exhaust port EA) of the casing 10 may be slightly deviated during the construction. If the gap between the opening of the wall surface WS and the outdoor air introduction port OA (or the discharge port EA) of the casing 10 is large, this deviation is
Although it can be absorbed by bending the duct SD (ED), if the gap between the two is narrowed, the duct SD (ED) may not be bent enough to absorb the deviation. Even in such a case, according to the present embodiment, by finely adjusting the duct joints 18A to 18C at the time of construction, it is possible to absorb the deviation and allow the casing 10 to approach the wall surface WS as much as possible. Of.

Furthermore, during the operation of this embodiment, the fan impellers 32 and 42 of the blowers 30 and 40 rotate, so that the outdoor air introduced from the outdoor air introduction port OA is supplied to the air blower 30. By the fan impeller 32, the air is pushed into the outdoor air flow passage OP of the heat exchange element 20 and supplied to the room through the supply port SA, and the room air is supplied by the fan impeller 42 of the exhaust blower 40.
The air is sucked from the indoor air introduction port RA, further passes through the indoor air flow passage RP of the heat exchange element 20, and then is discharged to the outside from the exhaust port EA. As a result, the heat exchange element 20 exchanges heat between the air flowing between the air flow passages OP and RP.

At this time, the air blown out from the air supply blower 30 has a direction L in which the heat exchange elements 20 are stacked.
Along the direction intersecting with each other, as shown by an arrow A in FIG. The air reaches the central portion of the heat exchange element 20 by following the path SP1 sufficient to make the blowout flow static pressure. Further, the outdoor air introduced into the casing 10 from the outdoor air introduction port OA passes through the heat exchange element 20 in a substantially straight line shape, and flows from the heat exchange element 20 to the outside of the casing 10 without bending the air flow direction. Is discharged. Moreover, the blowout flow is both fan impeller 3
Since it is blown out from between 2 and 42, the equalization of the blowout distribution to the heat exchange element 20 becomes more remarkable.

Therefore, in the structure of this embodiment, the main flow of the air blown from between the fan impellers 30 and 40 is directed to the central portion, and the blown air is made to have a static pressure. Follow the route SP1 that is sufficient to
Since it reaches the central portion of the heat exchange element 20, the air blown to the heat exchange element 20 easily diffuses throughout the stacking direction L of the heat exchange element 20, and the discharge distribution from the heat exchange element 20 is as large as possible. There is an advantage that it is possible to make them uniform evenly. In particular, since the path SP1 for staticizing the blowout flow is lengthened by the number of the duct joints 18A and 18B, the staticizing action of the blowout flow becomes more remarkable, which contributes to uniform blowout distribution. There is. Moreover, the blowout flow is both fan impeller 3
Since it is blown out from between 0 and 40, the equalization of the blowout distribution to the heat exchange element 20 becomes more remarkable.

Further, in the construction of this embodiment, the partition plate 1
By providing 5, the air blown from the air supply blower 30 reaches the heat exchange element 20 smoothly. Therefore, there is an advantage that the pressure loss is reduced and the noise is reduced accordingly. Further, in the configuration of the present embodiment, the partition plate 15 guides the blown air along the tangential direction of the inner surface 33A of the fan casing 33 for air supply, so that a smoother flow path is provided.
It is partitioned between the fan impeller 32 for air supply and the heat exchange element 20. Therefore, the pressure loss can be reduced as much as possible.

As described above, in the structure of this embodiment, the blowout distribution of the air blown from the air supply blower 30 can be distributed to the heat exchange element 20 as evenly as possible, and the pressure loss is reduced. Can contribute to the reduction of
Further, since it is not necessary to set the rotation speed of the blower 30 to be large in order to compensate for the pressure loss, it is possible to suppress noise and suppress an increase in power consumption. In particular, in the configuration of the present embodiment, since the air passes through the heat exchange element 20 in a substantially straight line, and the air is discharged from the heat exchange element 20 to the outside of the casing 10 without being bent, the blower also has this point. Three
It contributes to the reduction of the pressure loss of zero.

Therefore, according to the present embodiment, the outdoor air introduction port OA and the exhaust port EA can be mounted as close to the wall surface WS as possible, and pressure loss and accompanying increase in noise can be prevented. It has a remarkable effect that is possible. The above-described embodiments are merely examples of preferred embodiments of the present invention, and the present invention is not limited to the above embodiments.

For example, although the ceiling-hanging type heat exchange ventilation device has been described in the above embodiment, the present invention may be applied to a ceiling-embedded heat exchange ventilation device embedded in a ceiling space. Alternatively, in the above-described embodiment, the outdoor air introduction port OA is defined by the two duct joints 18A and 18B, but more duct joints may be adopted.

Further, in the above embodiment, the guide member is constituted by the partition plate 15 which is a member different from the fan casing 32, but the guide member may be formed integrally with the fan casing 32. As described above, it goes without saying that various design changes can be made without changing the gist of the present invention.

[0043]

As described above, according to the first aspect of the present invention.
With the configuration described, it is possible to select the duct joint closest to the air supply duct mounted on the wall and connect the air supply duct to this duct joint. As a result of being able to carry out the construction with less bending, pressure loss in both ducts can be suppressed. Further, in order to compensate for the pressure loss, it is not necessary to set the rotation speed of the blower to a large value, so that it is possible to suppress noise and suppress an increase in power consumption. Further, since the casing can be brought as close as possible to the wall surface, in the case of a ceiling-suspended heat exchange ventilation device, there is also an advantage that the aesthetic appearance during construction can be improved.

Further, in the structure according to the second aspect, it is possible to make a path for guiding the air introduced from the duct joint into the fan casing, so that there is an advantage that the pressure loss can be further reduced. . Further, in the configuration according to claim 3, since the outdoor air introduced from any one of the duct joints is guided to the communication surface and guided to the suction port of the fan casing, pressure loss and It is possible to suppress the resulting noise.

Further, in the structure according to claim 4, since at least one of the duct joints for partitioning the outdoor air introduction port or the exhaust port can be finely adjusted at the time of construction, the casing can be made close to the wall surface. As a result, the bending of the duct can be further suppressed, and as a result, there is an advantage that the casing can be brought closer to the wall surface while further reducing the pressure loss. That is, at the time of construction, the center of the opening provided on the wall surface and the center of the outdoor air introduction port (or exhaust port) of the casing may be slightly displaced. This gap can be absorbed by bending the duct if the gap between the opening on the wall surface and the outdoor air inlet (or outlet) of the casing is large. However, if the gap between the two is narrowed, the gap can be absorbed. In some cases, it becomes impossible to bend the duct. Even in such cases,
According to the configuration of claim 4, by finely adjusting the duct joint at the time of construction, it is possible to absorb the deviation and bring the casing as close to the wall surface as possible.

According to the fifth aspect of the invention, the main flow of the air blown from between the fan impellers is directed to the central portion, and the blown air is made to have a static pressure. Since it reaches the center part of the heat exchange element by following a sufficient path to the heat exchange element, the air blown to the heat exchange element easily diffuses in the entire stacking direction of the heat exchange element, and the discharge distribution from the heat exchange element. Has the advantage that it can be made as even as possible. In particular, since the above-mentioned path for making the blowout flow static pressure becomes as long as the number of duct joints, there is an advantage that the effect of making the blowout flow static pressure becomes more remarkable and contributes to making the blowout distribution uniform. Moreover, since the blowout flow is blown out between both fan impellers, the equalization of the blowout distribution with respect to the heat exchange element becomes more remarkable.

According to the sixth aspect of the invention, since the air blown from the air supply blower reaches the heat exchange element smoothly by providing the guide member, the pressure loss is reduced, and Accordingly, there is an advantage that noise is reduced. Further, in the structure according to claim 7, the pressure loss is reduced as much as possible as a result of the air being discharged along a smoother flow path partitioned between the fan impeller and the heat exchange element. Will be possible.

Therefore, according to the present invention, it is possible to mount the outdoor air introduction port and the exhaust port as close to the wall surface as possible, and it is possible to prevent the pressure loss and the accompanying increase in noise. There is a remarkable effect.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a heat exchange ventilation device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an appearance of the heat exchange ventilation device of FIG.

3 is a schematic cross-sectional view of the heat exchange ventilator of FIG.

FIG. 4 is a bottom view showing a part of the heat exchange ventilation device of FIG. 1 in a cutaway manner.

5 is a front view of a duct joint used in the heat exchange ventilation device of FIG. 1. FIG.

[Explanation of symbols]

 10 Casing 15 Partition Plate (Guide Member) 20 Heat Exchange Element 21 Unit Member 30 Air Supply Blower 32 Fan Impeller 33 Fan Casing 33A Inner Surface 33B Suction Port 33C Communication Surface 33E Communication Surface 40 Exhaust Blower 42 Fan Impeller 43 Fan Casing 43A Inner surface A Air blowing direction L Stacking direction ED Exhaust duct EP Exhaust path OP Outdoor air flow path RP Indoor air flow path SD Air supply duct SP Air supply path

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takanori Suzuki, 1-1 Nishiichitsuya, Settsu City, Osaka Prefecture Daikin Industries, Ltd. Yodogawa Manufacturing Co., Ltd. (72) Minoru Tanaka, 1-1, Nishiichitsuya, Settsu City, Osaka Prefecture Daikin Industries, Ltd. Yodogawa Manufacturing Co., Ltd.

Claims (7)

[Claims] 1. An outdoor air inlet (OA) for introducing outdoor air into the room and an outlet (EA) for exhausting indoor air to the outside are provided on the same end wall (11). The outdoor air inlet (O
Air supply path (SP) that supplies the air introduced from A) to the room
And a casing (10) partitioning an exhaust path (EP) through which the air in the room to be discharged from the exhaust port (EA) flows, and a large number of rectangular unit members (21) are stacked to form a substantially polygonal shape. The outdoor air flow passage (which is formed in a columnar shape and is housed in the casing (10) in a posture in which the stacking direction (L) of the unit member (21) is horizontal and communicates with the air supply path (SP) ( OP) and the exhaust passage (EP), the indoor air flow passage (EP) is divided into a heat exchange element (20) that divides the indoor air flow passage (EP) in a direction orthogonal to the stacking direction (L) and the stacking direction (L). Fan fan wheel (32, 42) that is continuously installed along the inside of the casing (10) and has a center of rotation extending vertically in the casing (10), and a substantially arc shape that covers the fan impeller wheel (32, 42). Of the inner surface (33A, 43A) of the
3A, 43A) and a fan casing (33, 43) for partitioning the path of the air blown from the fan impeller (32, 42), respectively, and sucks the outdoor air from the outdoor air inlet (OA). An air supply blower (30) that forms a supply air flow in the air supply path (SP) and an exhaust air blower that forms an exhaust air flow in the exhaust path (EP) and discharges indoor air from the exhaust port (EA) to the outside ( 40)
In a heat exchange ventilation device that is installed indoors with the air supply duct (SD) connected to the outdoor air introduction port (OA) and the exhaust duct (ED) connected to the exhaust port (EA) , The outdoor air inlet (OA) is opposite the outlet (EA) (L
1, L2) are divided by multiple duct joints (18A, 18B), and the air blower (30) above can selectively suck outdoor air from each duct joint (18A, 18B). A heat exchange ventilation device, which is arranged at various positions. 2. The heat exchange ventilator according to claim 1, wherein the fan casing (33) of the air supply blower (30) is located at a position away from the end wall (11) with a gap (S). It is placed. 3. The heat exchange ventilator according to claim 1 or 2, wherein the fan casing (33, 43) of the air supply blower (30) comprises:
The suction port (33B) that sucks in the outdoor air and the communication surface (33C, 3C) that connects the duct joints (18A, 18B) to the suction port (33B).
3E). 4. The heat exchange ventilator according to claim 1, 2, or 3, wherein the exhaust port (EA) is partitioned by a duct joint (18C), and the exhaust port (EA) and outdoor air are introduced. At least one of the duct joints (18A, 18B, 18C) partitioning the mouth (OA) is an adjusting means capable of finely adjusting the facing distance (L1, L2).
It includes (183B). 5. The heat exchange ventilator according to claim 1, 2, 3, or 4, wherein the blower for air supply (30) has an air blowing flow from between both fan impellers (32, 42). Direction crossing the stacking direction (L) above
Along (A), heat-exchange element (20), stacking direction (L)
It is directed to the substantially central portion of. 6. The heat exchange ventilator according to claim 5, wherein the air blower (30) is provided in the casing (10) and is provided in the casing (10).
It further comprises a guide member (15) for guiding the air blown out to the substantially central portion. 7. The heat exchange ventilation device according to claim 6, wherein the guide member (15) guides blown air along a tangential direction of the inner surface (33A) of the fan casing (33). Is.