JPS6123216Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an air conditioning ventilation fan that simultaneously sucks outdoor air into a room and exhausts indoor air to the outside, and exchanges heat between the intake and exhaust air. .

Conventionally, this type of air conditioning ventilation fan has a structure in which an intake blower, an exhaust blower, and a heat exchanger are housed inside the outer casing, while an intake duct and an exhaust duct are led outside the outer casing. In this case, the outer casing is installed at a relatively high place on the wall of the room, and both ducts are exposed to the outside of the room, that is, the outside of the house, through the wall of the room. However, in this type of air conditioning ventilation fan, both of the above ducts are located at the top of the outer casing, so when the outer casing is installed on a room wall or above a window, there is generally a small space above the window on the outer wall of the house. Since an eaves dedicated to the window is provided at a distance, the above-mentioned two ducts led out from the upper part of the outer casing are at exactly the same height as the eaves, causing many inconveniences such as not being able to be installed. It was hot.

The present invention has been developed in view of the above circumstances, and its purpose is to provide an air conditioning ventilation fan that can be mounted on a room wall above a window.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. First, in Figure 1, A is a room wall, B is a window, C is an exterior wall of the house, and D is an eaves. 1 is an outer casing disposed above the window B on the room wall A, and 2 is a heat exchanger disposed on one side of the interior of the outer casing. 1
It has a perpendicular shape with a ventilation passage 3 that opens from the upper part to the lower front part and a ventilation passage 4 that opens from the upper part of the front part to the lower part of the rear part. Part is small partition wall 5, 6,
7 and 8 respectively. 9 is located inside the outer casing 1 and has one side where the heat exchanger 2 is located;
This is a partition wall that separates the other side from the other side, and vent holes 10 and 11 are formed at the front and back of the upper part, respectively. Reference numeral 12 denotes an intake air blower, and 13 an exhaust air blower, which are arranged in parallel on the other side inside the outer casing 1 in front and behind the two. The heat exchanger 2 is exposed above the heat exchanger 2 through the vent holes 10 and 11 located in the upper part of the heat exchanger 1. Here, as shown in FIG. 2, each of the blower devices 12 and 13 is provided with centrifugal blades 18 and 1 in the shape of a casing 16 and 17 having the discharge ports 14 and 15, respectively.
These centrifugal blades 18, 19
is rotated by a single double-shaft motor 20 disposed between the casings 16 and 17. 21 is an inlet of the intake air blower 12, and this inlet 21
As shown in FIG.
8a, and is formed in the lower portion of the inner edge space of the centrifugal blade 18 as a whole, at a portion of the house exterior wall C from which the eaves D are removed. Here, if the suction port 21 is formed not particularly in the center of the centrifugal blade 18 but in a position shifted from there as in this embodiment, there is a concern that the function as an air conditioning ventilation fan may deteriorate, such as a decrease in the air blowing performance, that is, a decrease in the intake action. However, as a result of research conducted by the present applicant, the suction port of a centrifugal blade does not have to be located at the center of the blade, but within the area surrounded by the inner edge of the rain root (i.e., within the area surrounded by the inner edge of the centrifugal blade 18 mentioned above).
It has been found that if the fan faces the inner edge space of the fan, there will be almost no deterioration in performance, or at least the practicality of the fan as an air conditioning ventilation fan, and the above concerns have been resolved. The inlet 22 of the exhaust blower 13 is formed in the casing 17 near the center of the centrifugal blade 19. Reference numeral 23 denotes an intake duct connected to the intake port 21 of the intake air blower 12 from outside the outer casing 1. Reference numeral 24 denotes an indoor discharge port for discharging the outdoor air sucked in by the intake blower 12 into the room through the ventilation path 3 of the heat exchanger 2. It is formed at the lower front of the second side. 25 is a blower device 1 for exhausting indoor air.
3, which is formed on the side surface of the outer casing 1 on the side of the exhaust blower 13. Reference numeral 26 denotes an exhaust port for discharging the indoor air sucked by the exhaust blower 13 to the outside through the ventilation path 4 of the heat exchanger 2. It is formed on the rear surface, especially at the bottom. Here, the inlet port 21 is located at approximately the same height as the exhaust port 26.
27 is an exhaust duct connected to the exhaust port 26.

Now, according to this embodiment having the above configuration, since the discharge port 15 of the exhaust blower 13 faces the orthogonal heat exchanger 2 at the upper part inside the outer casing 1, the air discharged from the discharge port 15 is is inevitably discharged through the air passage 4 of the heat exchanger 2 to the rear of one side of the outer casing 1, particularly to the lower part thereof, and therefore the exhaust port 26 is also discharged to the rear lower part of the outer casing 1 on one side. Moreover, in the case of the rear lower part on one side of the outer casing 1, this area completely faces the so-called exhaust surface of the heat exchanger 2, so that the air discharged through the ventilation path 4 is directed to where. Since exhaust can be uniformly discharged from all parts, even if the exhaust port 26 is formed almost at the bottom of the part as described above, sufficient and smooth exhaust can be achieved. The exhaust duct 27 can also be located substantially at the bottom of the outer casing 1 in accordance with the fact that the exhaust duct 27 can be formed substantially at the bottom of the lower rear portion of the outer casing 1 . On the other hand, since the discharge port 14 of the intake air blower 12 is also placed facing the heat exchanger 2 in the upper part of the outer casing 1, it is natural that the formation position of the inlet 21 of the intake air blower 12 is located in the lower part of the outer casing 1. Moreover, in this embodiment, the suction port 21
is arranged so that its lower edge 21a is located in the casing 16 and substantially coincides with the inner lower edge 18a of the centrifugal blade 18, and as a whole, it is located at the lower part of the inner edge space of the centrifugal blade 18 and extends over the eaves of the exterior wall C of the house. Since D is formed in the area to be removed, the intake air blower 1 can be removed as described above.
The intake port 21 can be located substantially at the lowermost part within a range that does not impede the intake action in the outer casing 1. Eaves D at the bottom of 1
This exhaust duct 27 can be removed and placed.
Both the air intake duct 23 and the air intake duct 23 can be arranged at the lower part of the outer casing 1 and in a horizontal position as much as possible.

Therefore, the intake duct 23 and the exhaust duct 27
are located substantially horizontally at the bottom of the outer casing 1, so
As shown in Figure 2, the outer casing 1 is placed against the room wall A, and the window B is
Even if the intake duct 23 and the exhaust duct 27 are placed in the upper part, the intake duct 23 and the exhaust duct 27 are placed in the lower part of the eaves D, avoiding the eaves D which is located on the outside wall C of the house at a distance slightly from the window B. It can be viewed outdoors. Furthermore, both ducts 2
3 and 27 can be located below the eaves D. Therefore, when weather covers E are provided at the ends of these ducts 23 and 27 that protrude outdoors, even if the weather covers E are small, both ducts 23 and 27
In contrast, rainwater can be prevented from entering, and the weather cover can be made smaller, and as a result, the appearance can be improved. Also, as mentioned above, the fact that the intake duct 23 can be placed at the same height position as the exhaust duct 27, which is substantially horizontal, means that both the ducts 2 on the chamber wall A can be placed at the same height.
The holes for holes 3 and 27 can be formed at approximately the same height position, and there is no difficulty in forming them at different levels, and the construction work can be made easier from the point of view of the drilling work.

Note that the connection structure between the intake duct 27 and the intake port 21 is not limited to the one in which the centers of the two coincide as in the above embodiment, but for example, the connection structure between the intake duct 27 and the intake port 21 is not limited to that in which the centers of the two coincide, as shown in FIG. On the other hand, a structure in which the air intake ducts 28 are connected while being shifted slightly downward may be used. In this way, the position of the intake duct 28 relative to the outer casing 1 can be shifted further downward, and the position can be selected from a wide range.

As is clear from the above description, the present invention includes an intake blower device that sucks outdoor air into the room inside the outer casing, an exhaust blower device that exhausts indoor air outdoors, and a heat exchanger for the intake and exhaust air. In the air-conditioning ventilation fan, the air-conditioning ventilation fan has an orthogonal heat exchanger, and has an intake duct and an exhaust duct that face the outdoors through a chamber wall outside the outer casing, the intake blower device and the exhaust blower device facing the heat exchanger at the upper part of the inside of the outer casing, and an inlet connected to the intake duct of the intake blower, and a lower edge thereof facing the intake air blower. It is characterized in that it is formed in the lower part of the inner edge space of the centrifugal blade in a form that substantially coincides with the lower inner edge of the centrifugal blade, and in the part where the eaves of the exterior wall of the house are removed. Even if there is an eaves above the window, it can be installed above the window, so it can be installed at any part of the room wall,
Furthermore, it is possible to provide an air conditioning ventilation fan that has excellent practical effects such as easy construction.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention,
Fig. 1 is a transparent perspective view of the internal structure, Fig. 2 is a longitudinal sectional side view of the whole in the installed state, and Fig. 3 is a longitudinal sectional side view of the main parts showing another embodiment of the present invention. be. In the figure, 1 is an outer casing, 2 is a heat exchanger, 12 is an intake blower, 13 is an exhaust blower, 14 is a discharge port, 15 is a discharge port, 18 and 18a are centrifugal blades and their inner and lower parts. The edges 21 and 21a are an inlet and its lower edge, 23 is an intake duct, 27 is an exhaust duct, and 28 is an intake duct.

Claims (1)

[Scope of utility model registration request] The outer casing has an intake blower device for sucking outdoor air into the room, an exhaust blower device for discharging indoor air to the outside, and an orthogonal heat exchanger for exchanging heat between the intake and exhaust gases. In the device having an intake duct and an exhaust duct that face the outdoors through a chamber wall on the outside of the casing, the discharge port portions of the intake air blower and the exhaust air blower, respectively, are arranged to face the heat exchanger. , and the suction port connected to the intake duct of the intake blower device is configured such that its lower edge substantially coincides with the lower inner edge of the centrifugal blade of the intake blower device, so that the inner edge space of the centrifugal blade is An air conditioning ventilation fan characterized in that it is formed in the lower part of the house where the eaves of the exterior wall of the house are removed.