JPH10253114A - Supply and discharge box - Google Patents

Abstract

(57) [Summary] [Problem] In a configuration in which a heat exchange type ventilation fan is installed, two
A room pipe is adopted to facilitate installation work, and the degree of freedom in the arrangement position of the heat exchange type ventilation fan is increased. A supply / discharge box (25) of the present invention includes a partition member (33) for partitioning the inside of a box body (26) into an exhaust chamber and an air supply chamber, and the exhaust chamber (31) of the box body (26).
Cylindrical member 1 for connecting the exhaust duct 21 to the side wall on the side
5 is provided, a cylindrical member 16 for connecting the air supply duct 22 is provided on a side wall of the box main body 26 on the side of the air supply chamber 32, and further, a boundary portion between the two chambers 31 and 32 of the box main body 16 is provided. Opening 28 for connecting two-chamber tube 34 to side wall
a, and with the two-chamber pipe 34 connected to the opening 28a, the two openings 28c and 28d communicating with the exhaust passage 38a and the air supply passage 38b of the two-chamber pipe 34 are connected to the opening 28a. Is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust duct connected to, for example, a heat exchange type ventilation fan and a leading end of an air supply duct, and to guide exhaust air from the exhaust duct to the outside of a building. And a supply / discharge box having a function as a passage for guiding outside air outside the building to an air supply duct.

[0002]

2. Description of the Related Art FIGS. 7 and 8 show an example of an air conditioning system configured to discharge dirty air in a room to the outside of a building by using a heat exchange type ventilation fan and to supply fresh outside air to the room. Shown in In FIGS. 7 and 8, a heat exchange type ventilation fan 2 is disposed in a space behind (upper side of) the ceiling plate 1. At the right end in FIG. 8 of the heat exchange type ventilation fan 2, an inside air discharge port 2a and an outside air supply port 2b are provided, and the exhaust duct 3 is connected to the inside air discharge port 2a and the outside air supply port 2b.
And the air supply duct 4 are connected.

[0003] The right ends of the exhaust duct 3 and the supply duct 4 are disposed so as to penetrate the outer wall 5 of the building. Thereby, the right end openings of the exhaust duct 3 and the supply duct 4 communicate with the outside of the building. At the left end in FIG. 8 of the heat exchange type ventilation fan 2, an inside air inlet 2c and an outside air outlet 2d are provided, and the inside air inlet 2c and the outside air outlet 2d are provided with an inner exhaust duct 6 and an inner air supply duct. 7 is connected. The left ends of the inner exhaust duct 6 and the inner supply duct 7 are connected to supply and exhaust grilles 8 and 9. Thereby, the left end openings of the inner exhaust duct 6 and the inner supply duct 7 communicate with the room.

In the above configuration, when the heat exchange type ventilation fan 2 is operated, dirty air in the room passes through the air supply / exhaust grill 8, the inside exhaust duct 6, the heat exchange type ventilation fan 2, and the exhaust duct 3, and the building becomes dirty. In addition to being discharged outside, fresh outside air is blown into the room through the air supply duct 4, the inside of the heat exchange type ventilation fan 2, the inside air supply duct 7, and the air supply / exhaust grill 9.

[0005]

However, in the above-mentioned conventional structure, two through holes must be formed in the outer wall 5 so that the right ends of the exhaust duct 3 and the air supply duct 4 pass through the outer wall 5. Did not. Therefore, the operation of forming the two through holes is troublesome, and the strength of the outer wall 5 may be reduced. On the other hand, a single through-hole is formed in the outer wall, and a so-called two-chamber pipe is inserted and fixed in the through-hole. A configuration that connects to the air supply port has been considered. The two-chamber pipe is one pipe (tube)
Is a pipe provided with an exhaust passage and an air supply passage inside the pipe by partitioning the inside of the pipe with a partition plate.

[0006] The two-chamber tube having such a structure has a structure as follows.
Can not bend. In addition, when the two-chamber pipe is cut at the installation site, the cut end becomes oblique or the cut end has irregularities. When this cut end is connected to a heat exchange type ventilation fan, air leakage occurs. This makes it easier to mix the exhaust gas with the supply air (outside air). For this reason, when the above-mentioned two-chamber pipe is adopted, the length of the two-chamber pipe has to be shortened and the heat exchange type ventilation fan has to be arranged near the outer wall. Therefore, since the installation position of the heat exchange type ventilation fan is severely restricted, the installation work becomes difficult, and depending on the installation site, it may not be possible to adopt a two-chamber pipe.

Accordingly, an object of the present invention is to provide a heat exchange type ventilation fan in a configuration in which a heat exchange type ventilation fan can be easily installed and the degree of freedom in the arrangement position of the heat exchange type ventilation fan can be increased. To provide.

[0008]

A supply / discharge box according to the present invention comprises a box body and a partition member provided inside the box body for partitioning the inside of the box body into an exhaust chamber and an air supply chamber. And an exhaust connection portion provided on a side wall of the box body on the exhaust chamber side for connecting an exhaust duct, and connecting an air supply duct provided on a side wall of the box body on the air supply chamber side. For connecting a two-chamber pipe provided on a side wall of a boundary portion between two chambers of the box body and provided with an exhaust passage and an air supply passage therein, and the connection is provided. And a connection portion for a two-chamber pipe having two openings communicating with the exhaust passage and the air supply passage in a state.

In the above configuration, the supply / discharge box is disposed near the outer wall, and the connecting portion for the two-chamber pipe is connected to the two-chamber pipe penetrating the outer wall. Then, while disposing the heat exchange type ventilation fan at a desired position on the back side of the ceiling plate, connecting an exhaust duct and an air supply duct to the heat exchange type ventilation fan, and further connecting the other end of the exhaust duct and the air supply duct. Connect to the exhaust connection and air supply connection of the supply / discharge box. Therefore, according to this configuration, the degree of freedom of the installation position of the heat exchange type ventilation fan is increased even though the configuration adopts the two-chamber tube. In addition, since only one hole for penetrating the two-chamber tube is formed in the outer wall, the installation work is simplified.

Further, in the above structure, the inner diameter of the exhaust duct and the inner diameter of the air supply duct are made substantially the same, one of the ducts is made substantially linear, and the other duct has a bent portion. The partitioning member and the connecting portion for the two-chamber pipe in the box body are arranged so that the exhaust gas and the air supply can flow through the exhaust duct and the air supply duct with almost the same ease of flow. Is a preferable configuration.

Further, it is more preferable that the partition member is made of a material having a high heat insulating property or that a material having a high heat insulating property is attached to the surface of the partition member. Furthermore, a configuration in which a material having a high heat insulating property and a high water absorption property is attached to the inner surface of the box body is a good configuration.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, FIG. 1 is a cross-sectional view showing an installation mode of a heat exchange type ventilation fan disposed on the back side (upper side) of a ceiling plate. In FIG. 1, a heat exchange type ventilation fan 11 is constituted by, for example, a simultaneous supply / discharge type heat exchange type ventilation fan, and a ventilation fan main body 12 is suspended and fixed to an upper wall of a building disposed above a ceiling plate. ing. In this case, by embedding the upper ends of the four suspension bolts in the upper wall, these four suspension bolts protrude downward from the upper wall, and are provided at the lower ends of these suspension bolts. The ventilation fan body 12 is suspended and supported.

The ventilation fan body 12 has an inside air discharge port 13 and an outside air supply port 14 on the right side wall 12a in FIG. These inside air discharge port 13 and outside air supply port 1
Reference numeral 4 denotes cylindrical members 15 and 16 whose inner diameters gradually decrease toward the right. And
An inside air inlet 17 and an outside air outlet 18 are provided on the left side wall portion 12b of the ventilation fan body 12 in FIG. The inside air inlet 17 and the outside air outlet 18 have a cylindrical tubular member 19 whose inner diameter gradually decreases to the left,
20.

When the heat exchange type ventilation fan 11 having the above configuration is operated, air is sucked through the inside air suction port 17 by a blowing action of a fan built in the ventilation fan main body 12, and the sucked air is exhausted into the inside air. Discharged through outlet 13. Then, at the same time as the above blowing operation, the ventilation fan body 1
External air supply port 1 by the blowing action of a fan built in
Air is sucked through 4 and the sucked air is sent out through the outside air outlet 18. Further, inside the ventilation fan body 12, the air flowing from the inside air inlet 17 to the inside air outlet 13 and the outside air supply port 14 from the outside air outlet 1
8 is configured to perform heat exchange with the air flowing to 8.

Further, the inside air outlet 13 and the outside air supply port 14 of the ventilation fan main body 12 are connected to left ends 21a and 22a of an exhaust duct 21 and a supply duct 22 formed of cylindrical pipes, respectively. In this case, the inside air outlet 13
And the outer peripheral portions of the cylindrical members 15, 16 of the outside air supply port 14,
The exhaust duct 21 and the air supply duct 22 are fitted and fixed in the left ends 21a and 22a. It is preferable that an aluminum tape or the like be wound around the outer periphery of these fitting portions and sealed.

The exhaust duct 21 is, for example, a straight pipe, and extends toward the outer wall 23 of the building. The air supply duct 22 is a pipe having an intermediate portion bent in a substantially U-shape, and extends toward the outer wall 23. Here, the reason why the air supply duct 22 is bent as described above is to avoid, for example, the pillar 24 existing between the outer wall 23 and the ventilation fan main body 12.

On the inner side of the outer wall 23, a supply / discharge box 25 is provided. The box main body 26 of the supply / discharge box 25 is, as shown in FIGS.
For example, a box made of iron plate. The box body 26 is
4, a box-shaped member 27 having an open right side is provided, and a closing plate 28 attached to close the right opening of the box-shaped member 27. A flange 27a in the form of a flange is formed on the outer periphery of the box-like member 27 at the right end in FIG. The box-shaped member 27 and the closing plate 28 are connected by bringing the flange portion 27a into contact with the closing plate 28 and welding (or screwing) the two together, for example.

The left side wall 27 of the box-like member 27 in FIG.
Openings 27c and 27d are formed at both ends of b. On the outer peripheral portion of the opening 27c and 27d on the outer surface of the left side wall 27b of the box-shaped member 27, for example, cylindrical members 29 and 30 whose inner diameter gradually decreases to the left in FIG. It is attached by screwing (or welding). In this case, the tubular member 29 constitutes an exhaust connection part for connecting the exhaust duct 21, and the tubular member 30 constitutes an air supply connection part for connecting the air supply duct 22.

Further, as shown in FIG. 4, inside the box-shaped member 27, as a partition member for partitioning the inside of the box main body 26 into an exhaust chamber 31 and an air supply chamber 32, for example, a partition made of an iron plate A plate 33 is provided. The position of the partition plate 33 is set at a position deviated downward from the center of the box body 26 in FIG. 4, specifically, at the upper edge of the opening 27d of the box-like member 27 in FIG. Have been.

The exhaust chamber 3 in the closing plate 28
For example, a circular opening 28a is formed at the boundary between the air supply chamber 1 and the air supply chamber 32. The opening 28a constitutes a two-chamber connection part. The opening 28a is formed, for example, in the shape of a short cylinder, and a partition member 28 is formed on an inner peripheral portion thereof so as to correspond to the partition plate 33 of the box body 26.
b is provided by welding or the like. Thus, the opening 28a is partitioned into two semicircular openings 28c and 28d by the partition member 28b.

The partition member 28b is connected to the box body 26.
Is in contact with the left end of the partition plate 33. Opening 2
An annular fitting groove 28e that opens to the right in FIG. 4 is formed in the peripheral portion of 8a (see also FIG. 3). Furthermore,
A linear fitting groove 28f that opens rightward in FIG. 4 is formed in the partition member 28b of the opening 28a (see also FIG. 3).

Here, the opening 2 of the box body 26
The left end portion 34a in FIG. 4 of the cylindrical two-chamber tube 34 is connected to 8a, for example. The interior of the two-chamber tube 34
The partition plate 35 partitions the exhaust passage 36 and the air supply passage 37. In the case of this configuration, the left end portion 34a of the two-chamber tube 34
Into the annular fitting groove 28 e of the opening 28 a of the closing plate 28, and the left end 3 of the partition plate 35 of the two-chamber tube 34.
The two-chamber tube 34 is connected and fixed to the box main body 26 by fitting and fixing 5a into the fitting groove 28f of the partition member 28b in the opening 28a of the closing plate 28.

In this connection state, the exhaust passage 36 and the air supply passage 37 of the two-chamber pipe 34 are configured to communicate with the two openings 28c and 28d of the opening 28a. The length of the two-chamber tube 34 is set to be slightly longer than the thickness of the outer wall 23.

On the other hand, a portion of the outer wall 23 corresponding to the opening 28a of the box main body 26 is formed with, for example, a circular through hole 23a. The two-chamber tube 34 is inserted and penetrated into the through hole 23a. At the right end 34b of the penetrated two-chamber tube 34, a two-chamber tube outer wall member 38 having a function as a so-called pipe hood or weather cover is attached.

The two-chamber outer wall member 38 includes a cup member 39 having a short cylindrical shape with a bottom, an end plate 40 attached to the left end opening edge of the cup member 39 by welding, and the like. A partition plate portion 41 is provided at the bottom to protrude so as to correspond to the partition plate 35 of the two-chamber tube 34. This partition plate portion 41 and the inner bottom portion of the cup member 39
They are connected by welding or the like. The interior of the two-chamber outer wall member 38 is divided into two chambers, specifically, an exhaust-side chamber 38a and an air-supply-side chamber 38b by the partition plate portion 41.

The outer peripheral wall of the cup member 39 corresponding to the exhaust-side chamber 38a has an exhaust opening 39a.
Are formed. An opening 39b for sucking outside air is formed in the outer peripheral wall of the cup member 39 corresponding to the chamber 38b on the air supply side. Further, the partition plate portion 4
1 are provided at the left end portion in FIG.
b is formed. Further, a circular through hole 40 a having substantially the same size as the inner diameter of the two-chamber tube 34 is formed in a central portion of the end plate 40.

In the above configuration, when the two-chamber outer wall member 38 is attached to the right end 34 b of the two-chamber pipe 34, the peripheral portion of the through hole 40 a of the end plate 40 of the two-chamber outer wall member 38 is attached to the right end of the two-chamber pipe 34. The partitioning portion 41c of the partition wall portion 41 of the two-chamber outer wall member 38 is fitted to and fixed to the right end of the partition plate 35 of the two-chamber tube 34. The peripheral portion of the through hole 40a of the end plate 40 and the right end portion 34 of the two-chamber tube 34
It is preferable to apply a sealing material such as putty on the outer peripheral portion (or inner peripheral portion) of the contact portion with b.

The box body 2 of the supply / discharge box 25
When attaching 6 to the outer wall 23, the closing plate 28 of the box main body 26 is brought into contact with the inner surface of the outer wall 23, and is fastened and fixed by screws 42.

On the other hand, as shown in FIG.
The right end portions 21b and 22b in FIG. 1 of the exhaust duct 21 and the air supply duct 22 are connected to the fifth cylindrical members 29 and 30. In this case, the outer peripheral portions of the tubular members 29 and 30 are connected to the right end portions 21 b of the exhaust duct 21 and the air supply duct 22.
And 22b. It is preferable that an aluminum tape or the like be wound around the outer periphery of these fitting portions.

Further, the inside exhaust duct 43 and the inside air supply duct 44 are provided in the cylindrical members 19 and 20 of the inside air intake port 17 and the outside air outlet 18 at the left end of the ventilation fan body 12 in FIG.
Is connected. Also in this configuration, the outer peripheral portions of the tubular members 19 and 20 are fitted and fixed in the right end portions of the inner exhaust duct 43 and the inner air supply duct 44. Then, an aluminum tape or the like is preferably wound around the outer periphery of these fitting portions. Further, left ends (not shown) of the inside exhaust duct 43 and the inside air supply duct 44 are connected to a supply / exhaust grill (not shown). Thereby, the left end openings of the inner exhaust duct 43 and the inner supply duct 44 communicate with the room.

In the above configuration, when the heat exchange type ventilation fan 11 is operated, dirty air in the room is blown by the air supply / exhaust grill and the inside by the blowing action of an exhaust fan (not shown) provided in the ventilation fan body 12. The air is sucked into the heat exchange type ventilation fan 11 through the exhaust duct 43 and the inside air inlet 17. Then, the sucked air passes through the outside air outlet 18 and the exhaust duct 21 and exhaust chamber 31 of the supply / discharge box 25.
After passing through the exhaust passage 36 of the two-chamber pipe 34 from one opening 28c of the opening 28a of the supply / discharge box 25, it passes through the chamber 38a on the exhaust side of the two-chamber outer wall member 38, The air is discharged from the opening 39a to the outside of the building.

At the same time as the above-described exhaust operation, fresh air outside the building is blown by the air supply fan (not shown) provided in the ventilation fan main body 12 so that fresh air outside the two-chamber pipe outer wall member 38 is removed. From the opening 39b, the two-chamber outer wall member 3
8 and the air supply passage 37 of the two-chamber pipe 34.
Through the other opening 28 d of the opening 28 a of the supply / discharge box 25 and into the air supply chamber 32, and thereafter, the air supply duct 22, the cylindrical member 16, and the outside air supply port 14
The air is sucked into the ventilation fan body 12 through the air passage. Then, the sucked air (outside air) passes through the outside air outlet 18 of the ventilation fan main body 12, the cylindrical member 20, and the inner air supply duct 44, and then is blown into the room through the air supply / exhaust grill. ing.

When air (exhaust) from the room and outside air from outside the building pass through the ventilation fan body 12, the air and the air are exchanged by a heat exchanger (not shown) provided in the ventilation fan body 12. The heat exchange is performed with the outside air. Specifically, when the room is being heated, the outside air is warmed by the exhaust air and the exhaust air is cooled by the outside air. Conversely, when the room is being cooled, the outside air is cooled by the exhaust air and the exhaust air is heated by the outside air. Thus, when the room is cooled or heated, the heat loss is minimized.

In this embodiment having such a structure, the supply / discharge box 25 is attached to the inner surface of the outer wall 23 on the back side of the ceiling plate, and one end of the two-chamber tube 34 penetrated through the through hole 23a of the outer wall 23. The part 34a to the supply / discharge box 25
To the opening 28a. And heat exchange type ventilation fan 1
1 is arranged at a desired position on the back side of the ceiling plate, and the tubular members 15 and 16 of the ventilation fan main body 12 of the heat exchange type ventilation fan 11 are connected to one ends of the exhaust duct 21 and the air supply duct 22, respectively. The other end of each of the exhaust duct 21 and the supply duct 22 is connected to the cylindrical member 2 of the supply / discharge box 25.
9 and 30 were connected. Further, the cylindrical members 19 and 20 of the ventilation fan main body 12 are connected to the inner exhaust duct 43 and the inner air supply duct 4.
4 and the other end of the inner exhaust duct 43 and the inner air supply duct 44 were connected to a supply / exhaust grill.

Therefore, according to the above configuration, the degree of freedom of the arrangement position of the heat exchange type ventilation fan 11 can be increased while the configuration adopts the two-chamber tube 34. In addition, the outer wall 23
Has one through-hole 23 for allowing the two-chamber tube 34 to pass therethrough.
Since only a is required, the installation work becomes easy.

In the above embodiment, the inner diameters of the exhaust duct 21 and the air supply duct 22 are substantially the same.
The exhaust duct 21 is configured to be substantially linear, and the air supply duct 22
Was formed into a shape having a bent portion. At this time, the arrangement positions of the partition plate 33 and the opening 28a of the closing plate 28 in the box main body 26 of the supply / discharge box 25 are biased toward the tubular member 30 as shown in FIGS. Configured. Thus, even if the air supply duct 22 is bent and the air supply in the inside of the air supply duct 22 is somewhat difficult to flow, the exhaust chamber 3 of the box body 26 can be used.
1, the supply air is easier to flow in the air supply chamber 32, so that, as a whole, the exhaust and air supply in the exhaust duct 21 and the air supply duct 22 are almost the same. , So that each can be distributed smoothly.

In the above-described embodiment, the air supply duct 22 is bent and the exhaust duct 21 is formed in a straight line. However, the present invention is not limited to this. May be bent. In the case of this configuration, the supply and discharge duct 25 may be configured to be used upside down in FIGS. 1 and 4.

Further, both the exhaust duct and the air supply duct may be formed linearly. In this case, since the ventilation resistance in the exhaust duct and the air supply duct is the same, the box of the air supply / discharge box 25 It is preferable that the partition plate 33 and the opening 28a of the closing plate 28 in the main body 26 be arranged in the middle. Further, the exhaust duct and the air supply duct may be configured to be bent together. In this case, since the ventilation resistances in the exhaust duct and the air supply duct are almost the same, the partition plate 33 and the opening 28 of the air supply / discharge box 25 are provided.
It is preferable that the arrangement position of a is in the middle.

Further, when the ventilation resistances in the exhaust duct and the air supply duct are substantially the same, the position of the partition plate 33 and the opening 28a of the air supply / discharge box 25 is changed so as to give priority to the exhaust. It is also preferable to make a configuration such that the flow is biased so as to be easy to flow. As described above, as a method for appropriately changing the arrangement positions of the partition plate 33 and the opening 28a of the supply / discharge box 25, for example, several types of supply systems in which the arrangement positions of the partition plate 33 and the opening 28a are changed are described. The discharge box 25 may be manufactured and prepared, and may be appropriately selected and used.

In the above embodiment, the supply / discharge box 25 is applied to the air-conditioning system using the heat-exchange type ventilation fan 11 of the ceiling-embedded type. It is good also as a structure which applies the supply / discharge box 25 to the air conditioning system using. The ceiling-cassette type heat exchange type ventilation fan is a ventilation fan configured such that an air supply port and an exhaust port provided in a ventilation fan main body are directly exposed to the room.

FIG. 5 shows a second embodiment of the present invention, and the points different from the first embodiment will be described. The same parts as those in the first embodiment are denoted by the same reference numerals. In the second embodiment, as shown in FIG. 5, a sheet material 45 made of, for example, urethane foam having open cells as a material having high heat insulation and high water absorption is attached to the inner surface of the box body 26. . And the surface of the partition plate 33,
For example, a sheet material 45 made of urethane foam having open cells is attached to the right side surface in FIG. 5 as a material having high heat insulating properties. Also, the opening 27 in each sheet material 45
Openings are respectively formed in portions corresponding to c, 27d, and 28a. The configuration of the second embodiment other than that described above is the same as that of the first embodiment.

Therefore, the same operation and effect as in the first embodiment can be obtained in the second embodiment. In particular, the second
In the embodiment, the sheet material 45 is provided on the inner surface of the box body 26.
Is attached, even if there is a temperature difference between the inside temperature of the box body 26 and the outside temperature, the dew condensation on the inner surface or the outer surface of the box body 26 because the sheet material 45 has a heat insulating property. Can be prevented from occurring.

Further, in the second embodiment, when the conditions under which dew condensation is very likely to occur on the inner surface of the box body 26 (for example, when the temperature difference is very large), the sheet material 45 has a low water absorption. As a result, the generated condensed water can be absorbed by the sheet material 45, and the condensed water can be prevented from dropping on the ceiling plate side. It should be noted that the water absorbed by the sheet material 45 is allowed to dry naturally when the condition is satisfied that no dew condensation occurs.

In the second embodiment, the sheet material 45 is attached to the right side of the partition plate 33 in FIG. 5, so that the inside of the exhaust chamber 31 and the inside of the air supply chamber 32 of the supply / discharge box 25 are provided. Even if there is a temperature difference between the two, the occurrence of condensation on the partition plate 33 can be prevented. Then, even if dew condensation occurs on the right side surface of the partition plate 33, the dew water can be absorbed by the sheet material 45.

In the second embodiment, the sheet member 45 is attached to the inner surface of the box body 26.
The present invention is not limited to this, and the sheet material 45 may be attached to the outer surface of the box body 26.
The sheet material 45 may be attached to the inner surface and the outer surface of the box main body 26. Further, instead of the sheet material 45, a box material in which a sheet material made of a heat insulating material such as styrene foam and a sheet material made of a water-absorbing material such as sponge are stacked is used.
6 may be affixed to the inner or outer surface, or may be affixed to the inner and outer surfaces.

Further, a sheet material made of a material having a heat insulating property is attached to one of the inner surface and the outer surface of the box body 26, and a sheet material made of a material having water absorption is attached to the other of the inner surface or the outer surface of the box body 26. It may be configured as follows. Further, in the second embodiment, the partition plate 33
Although the sheet material 45 is stuck on the right side in FIG. 5, the sheet material 45 may be stuck on the left side of the partition plate 33 in FIG. Further, instead of the sheet material 45, a sheet material made of a material having a heat insulating property, for example, styrene foam may be attached to the surface of the partition plate 33. FIG. 6 shows a third embodiment of the present invention. Therefore, the difference from the first embodiment will be described. The same parts as those in the first embodiment are denoted by the same reference numerals. In the third embodiment, a member 46 made of, for example, styrene foam is provided on the inner surface of the box body 26 as a material having heat insulating properties, and the partition plate 47 is made of styrene foam integrally formed with the member 46. .

Specifically, as shown in FIG. 6, the member 46 is composed of, for example, six plate members 46a to 46e (only five are shown) adhered to six inner surfaces of the box body 26. ing. Here, a partition plate 47 is formed integrally with the plate member 46a attached to the left inner surface of the box body 26 in FIG. Further, the plate members 46a and 46
Openings are respectively formed at portions corresponding to the openings 27c, 27d, and 28a in 6c.

The configuration of the third embodiment other than that described above is the same as that of the first embodiment. Therefore, also in the third embodiment, the same operation and effect as in the first embodiment can be obtained. In particular, in the third embodiment, the partition plate 4
7 is made of a material having a heat insulating property, so that dew condensation on the partition plate 47 can be more reliably prevented.

In the third embodiment, the member 46 is constituted by the six plate members 46a to 46e. However, the member 46 may be constituted by two to five members as long as it can be formed. Further, the shape of the inner surface of the member 46 may be formed into a rounded and smooth shape so that the exhaust air and the air supply can flow easily. Further, in the third embodiment, nothing is stuck on the outer surface of the box main body 26.
A material having water absorbency or a material having heat insulating properties, or a material having water absorbing and heat insulating properties may be attached to the outer surface of the box body 26.

Further, in the first to third embodiments, the outer peripheral portions of the exhaust duct 21, the air supply duct 22, the inner exhaust duct 43, and the inner air supply duct 44 are covered with a member having heat insulation. You may comprise.

[0051]

Since the present invention has the configuration as described above, the following effects can be obtained. That is, claim 1
According to the supply / discharge box, a partition member that partitions the inside of the box body into an exhaust chamber and an air supply chamber, an exhaust connection portion provided on a side wall of the box body on the exhaust chamber side, Since the air supply connection part provided on the side wall of the box main body on the air supply side and the two-chamber pipe connection part provided on the side wall at the boundary between the two chambers of the box main body are provided. 2
Although the configuration adopts a room pipe, the degree of freedom of the installation position of the heat exchange type ventilation fan is increased, and only one through-hole for penetrating the two-room pipe is formed on the outer wall. Work becomes easier.

According to the supply / discharge box of the second aspect, the location of the partitioning member and the connection portion for the two-chamber pipe in the box body can be easily adjusted so that the exhaust gas and the air supply flow in the exhaust duct and the air supply duct at substantially the same level. It was set up so that it could be distributed. Accordingly, even when the inner diameters of the exhaust duct and the supply duct are made substantially the same, one of the ducts is made substantially linear, and the other duct is made into a shape having a bent portion, the exhaust duct is formed. Exhaust gas and air supply flow through the duct and the air supply duct with approximately the same ease of flow.

According to the supply / discharge box of the third aspect, since the partition member is made of a material having a high heat insulating property, or a material having a high heat insulating property is attached to the surface of the partition member, dew condensation occurs on the partition member. Can be prevented.

According to the supply / discharge box of the fourth aspect, since a material having high heat insulating properties and high water absorption is adhered to the inner surface of the box body, it is possible to prevent dew condensation from occurring in the box body. Even if dew condensation occurs on the inner surface of the box body, the dew water can be absorbed by the material having high water absorption.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, and is a cross-sectional view around a portion where a supply / discharge box and a heat exchange type ventilation fan are provided.

FIG. 2 is a perspective view of the supply / discharge box as viewed from one side.

FIG. 3 is a perspective view of the supply / discharge box as viewed from the other side.

FIG. 4 is an enlarged cross-sectional view around the supply / discharge box.

FIG. 5 is a cross-sectional view of a supply / discharge box showing a second embodiment of the present invention.

FIG. 6 is a view corresponding to FIG. 4, showing a third embodiment of the present invention.

FIG. 7 shows a conventional configuration, and is a longitudinal sectional side view around a portion where a supply / discharge box and a heat exchange type ventilation fan are provided.

FIG. 8 is a diagram corresponding to FIG.

[Explanation of symbols]

11 is a heat exchange type ventilation fan, 12 is a ventilation fan main body, 13 is an inside air discharge port, 14 is an outside air supply port, 21 is an exhaust duct, 22 is an air supply duct, 23 is an outer wall, 23a is a through hole, and 25 is a supply and exhaust box. , 26 is a box body, 27c and 27d are openings, 28 is a closing plate, 28a is an opening (connection part for two chamber pipe), 28b is a partition member, 28c and 28d are openings,
9 is a cylindrical member (exhaust connection portion), 30 is a cylindrical member (air supply connection portion), 33 is a partition plate (partition member), 34 is a two-chamber pipe, 35 is a partition plate, 36 is an exhaust passage, 37 is an air supply passage,
38 is a two-chamber outer wall member, 45 is a sheet material, 46 is a member,
47 denotes a partition plate.

Claims (4)

[Claims] 1. A box body, a partition member provided inside the box body, and partitioning the inside of the box body into an exhaust chamber and an air supply chamber, and an exhaust chamber side of the box body. An exhaust connection portion provided on a side wall of the box, for connecting an exhaust duct, and an air supply connection portion for connecting an air supply duct, provided on a side wall of the box body on the air supply chamber side, It is provided on the side wall at the boundary between the two chambers of the box main body, and is for connecting a two-chamber pipe provided with an exhaust passage and an air supply passage therein. A supply / discharge box including a two-chamber pipe connection portion having two openings communicating with the passage and the supply passage. 2. The box body according to claim 1, wherein the inner diameter of the exhaust duct and the inner diameter of the air supply duct are substantially the same, and one of the ducts is substantially straight and the other duct has a curved portion. Wherein the arrangement positions of the partition member and the connection portion for the two-chamber pipe are set such that the exhaust gas and the air supply can flow through the exhaust duct and the air supply duct with substantially the same ease of flow. The supply / discharge box according to claim 1. 3. The supply / discharge box according to claim 1, wherein the partition member is made of a material having a high heat insulating property, or a material having a high heat insulating property is attached to a surface of the partition member. 4. The supply / discharge box according to claim 1, wherein a material having a high heat insulating property and a high water absorption property is attached to an inner surface of the box body.