JPS6325439A - Air-conditioning and ventilating fan for duct - Google Patents

Abstract

PURPOSE:To permit the reduction in the height of a title fan as well as the floor height of a building without enlarging the main body of the fan, by a method wherein first and second beat exchangers are provided so that the crest lines thereof are laid horizontally and one crest line of each heat exchanger is abutted against each other while discharging air stream and feeding air stream are branched respectively to two sets of heat exchangers by closing a partitioning plate, further, ventilation is effected by only opening the partitioning plate when the ventilation is effected without passing through the heat exchangers. CONSTITUTION:When an air-conditioning and ventilating fan for a duct is operated under a condition that a partitioning plate 22 for discharging air and the partitioning plate 24 for feeding air are closed, indoor air is sucked through an indoor side suction port 2, arrives at a first space 16, sucked through the airflow passageways 13a, 13a of heat exchangers 8, 8 separately, passes through the discharging air passageways of the heat exchangers 8, 8, sucked into the suction port of a fan 7 for discharging air in such a manner that one of the indoor air flows is sucked directly and the other is sucked by detouring the side surfaces of a main body 1 and, then, is discharged through an outdoor side discharging port 5. On the other hand, outdoor side air is sucked through an outdoor side suction port 4. arrives at the second space 19, passes through the feed air passageways 12, 12 of the heat exchangers 8, 8 separately, and is sucked into a fan 6 for feeding air and fed into a room through an indoor side delivery port 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air-conditioning ventilation fan for a duct that recovers indoor thermal energy that is exhausted to the outside through ventilation.

Conventional technology In recent years, as a means of ventilating indoor rooms that are currently being heated and cooled, dirty air inside the room is exhausted outside, fresh air is brought in from outside, and heat is generated between the indoor air and outdoor air. Duct air conditioning ventilation fans have come into use that perform heat exchange through an exchanger, transfer the thermal energy of the discharged indoor air to outdoor air, and recover it indoors. Also, during intermediate periods such as spring and autumn, it may be more economical and more comfortable to supply outside air directly into the room.
A function that allows ventilation without going through a heat exchanger is also being incorporated.

Generally, duct air conditioning ventilation fans are required to be installed in the ceiling and have a low height.

For this reason, the conventional duct air conditioning ventilation fan has an air supply passage 104 and an exhaust air passage of a main body 103 incorporating an air supply blower 101 and an exhaust air blower 102, as shown in FIGS. 4 and 6, for example. A heat exchanger 107 is provided at the intersection 106 of the passage 105 with its longitudinal direction being horizontal, and an indoor suction part 109 and the heat exchanger 107 are provided in the exhaust bypass space 108 on a route that does not pass through the heat exchanger 107. A partition plate 111 that can be opened and closed is provided to partition the exit side space 110.

Problems to be Solved by the Invention In such conventional duct air conditioning ventilation fans, when a large air volume is required, the heat exchanger 107 with a large air passage surface is required.
In addition, an exhaust bypass space 108 is required, which increases the size of the main body 103, and in particular increases the height, which requires a high space under the ceiling, which increases the floor height of the building. The problem was that construction costs were high.

The present invention has been made in consideration of the above-mentioned conventional problems, and an object of the present invention is to provide an air conditioning ventilation fan for a duct which reduces the construction cost of a building by reducing the height of the main body.

Means to solve the problem: Inside the main body, which is provided with an indoor suction port and an indoor discharge port that communicate with the room, and an outdoor suction port and outdoor discharge port that communicate with the outdoors, a plurality of partition plates and spaces are provided inside the main body. Stack the plates alternately,
the first and second square prism heat exchangers configured such that supply air flow and exhaust flow flow alternately orthogonally between the laminated layers; a supply air blower and an exhaust air blower; 1st
and the second heat exchanger is arranged so that the ridge lines are horizontal and the air passage surface forming the air inlet or outlet is tilted at 45 degrees to the horizontal plane so that one ridge line is in contact with each other, The chamber passes through a first space formed by opposing air passage surfaces of the first and second heat exchangers and the top surface of the main body and an exhaust passage of the first and second heat exchangers. a second space formed by a main body exhaust passage connecting the inner suction port and the outdoor discharge port and having the exhaust blower, opposing air passage surfaces of the first and second heat exchangers, and a bottom surface of the main body; and the air supply passages of the first and second heat exchangers, connecting the outdoor side suction port and the indoor side discharge port, and connecting the main body air supply passage having the air supply blower independently from each other. an exhaust partition plate that opens and closes the first space and the outlet side space of the exhaust passage of the heat exchanger without passing through the heat exchanger; It is formed by an air supply partition plate that can be opened and closed to partition the outlet side space of the air supply passage of the heat exchanger without passing through a heat exchanger.

Function: With this configuration, the first and second heat exchangers are provided on the 6th page with their ridgelines horizontal and one ridgeline in contact with each other, so the air path surface of the heat exchanger can be enlarged as a whole. Moreover, each can be made small, and when ventilating without going through a heat exchanger, it is only necessary to open the partition plate, and there is no need to create a new space for the exhaust bypass.
Since the height can be reduced without increasing the size of the main body, the floor height of the building can also be lowered.

EXAMPLE Hereinafter, an example of the present invention will be described in Section 1. This will be explained based on FIGS. In the figure, 1 is the main body of a duct air conditioning ventilation fan, which is provided with an indoor suction port 2 and an indoor discharge port 3 that communicate with the room, and an outdoor suction port 4 and an outdoor discharge port 6 that communicate with the outdoors. There is. Inside the main body 1, there is provided an air supply blower 6 such that the indoor side outlet 2 and the outlet communicate with each other;
An exhaust blower 7 and two heat exchangers 8.8 having the same specifications are disposed so that the outdoor discharge port 5 and the discharge port communicate with each other. The heat exchangers 8, 8 have a plurality of partition plates 9 and gradient spacers 10 stacked alternately, and the exhaust passage 11 and the supply air A passage 12 is formed, and the 7 vanes also have an air passage surface 13a serving as an intake port for the exhaust flow and an air passage surface 13b serving as an intake port for the supply air flow tilted at 45 degrees with respect to the horizontal plane, and the air passage surface 13a and the air passage surface 13b Intersecting ridge lines 14
．． 14 are arranged so as to abut each other. In addition, inside the main body 1, from the indoor suction port 2, an air passage surface 13a,
13a and the top surface 16 of the main body 10, the exhaust passages 11.11 of the two heat exchangers 8, 8, and the exhaust blower 7, and the outdoor outlet 6. From the main body exhaust passage 17 leading to the outdoor side suction port 4 to the air passage surface 13b,
13b and the bottom surface 18 of the main body 1, the air supply passages 12.12 of the two heat exchangers 8, 8, and the air supply blower 6, A main body air supply passage 2o leading to the outlet 3 is formed by a partition wall 21. Further, inside the main body 1, there is an exhaust partition plate that freely opens and closes the first space 16 and the first outlet side space 23 of the exhaust passage 11 of the heat exchanger 8 without passing through the heat exchanger 8. 22, and an air supply partition plate 24 that can open and close the second space 19 and the second outlet side space 25 of the air supply passage 12 of the heat exchanger 8 without passing through the heat exchanger 8. It is provided.

In the above configuration, the exhaust partition plate 22 and the air supply partition plate 2
4 is closed and the duct air conditioning ventilation fan is operated, the indoor air is sucked in from the indoor suction port 2 by the exhaust blower 7, reaches the first space 16, and the air from one heat exchanger 8 is The air is sucked into the road surface 13a and the air passage surface 13a of the other heat exchanger 8, passes through the exhaust passages of the respective heat exchangers 8, 8, one is sucked into the suction port of the exhaust blower 7, and the other is sucked into the main body 1. The air bypasses the side surface of the air blower 7 and is sucked into the suction port of the exhaust blower 7. Then, it is discharged from the outdoor discharge port 6. On the other hand, the outdoor air is sucked in from the outdoor suction port 4 by the air supply blower 6, reaches the second space 19, and is passed through the two heat exchangers 8 as in the case of the indoor air. ,8
It passes through the air supply passage divided into 12 degrees 12, one of which is sucked into the suction port of the air supply blower 6, and the other side bypasses the side of the main body 1 and is also sucked into the air supply blower 6. Air is then supplied from the indoor discharge port 3. The above exhaust flow and 9 base 7
'The supply air stream undergoes heat exchange in each heat exchanger.

Next, when the exhaust partition plate 22 and the air supply partition plate 24 are opened and the duct air conditioning ventilation fan is operated, the air inside the room is sucked by the exhaust blower 7 from the indoor side suction port 2, and The air flows directly through the first outlet side space 23 without passing through the heat exchanger 8, is sucked into the suction port of the exhaust blower 7, and is discharged from the outdoor discharge port 5. On the other hand, the air on the outdoor side is sucked in from the outdoor side suction port 4 by the air supply blower 6, reaches the second space 19, and directly flows into the second outlet side space 25 without passing through the heat exchanger 8. The air is drawn into the suction port of the air supply blower 6 and supplied from the indoor discharge port 3.

As described above, according to this embodiment, when a large amount of air is required, the air passage surfaces 13a of the two heat exchangers 8,8.

This can be solved by increasing the total area of 13a, air passage surface 13)), and 13b, and the respective heat exchangers 8, 8
Even when supplying and exhausting directly without passing through the heat exchanger 8, there is no need to newly provide a space for the exhaust bypass 1o, -, and therefore the main body 1
The height can be reduced without increasing the size.

Effects of the Invention As described above, according to the present invention, by dividing the exhaust air flow and the supply air flow into two heat exchangers, the overall air path can be improved even though the size of one heat exchanger is small. The area can be made larger, so even if a large amount of air is required, the height of the main body is lower than before, and even if a heat exchanger is not used, the exhaust partition plate and the air supply partition plate can be opened. Since there is no need to create a new space for exhaust bypass and there is no need to increase the size of the main body, the height of the space under the ceiling can be kept low. As a result, the floor height of the building can be lowered, resulting in an advantageous effect on building construction costs.

[Brief explanation of the drawing]

1 and 2 are partially cutaway perspective views of a duct air conditioning ventilation fan according to an embodiment of the present invention, FIG. 1 is a heat exchange ventilation state diagram, FIG. 2 is a normal ventilation state diagram, page 11, page 3. The figure is a perspective view of the heat exchanger of the same duct air conditioning ventilation fan, Figures 4 and 5 are partially cutaway perspective views of the conventional duct air conditioning ventilation fan, Figure 4 is a heat exchange ventilation state diagram, and Figure 5 is a diagram of the heat exchange ventilation state. is a normal ventilation state diagram. 1...Main body, 2...Indoor suction port, 3
...Indoor discharge port, 4...Outdoor suction port, 5...Outdoor discharge port, 6...Air supply blower, 7... ...Exhaust blower, 8...
・Heat exchanger, 9... Partition plate, 1o...
Spacing plate, 11...Exhaust passage, 12...
Air supply passage, 13a. 13b... Wind road surface, 14... Ridge line, 1
6...Top surface, 16...First space part,
17... Body exhaust passage, 18... Bottom surface, 19... Second space, 2o... Body air supply passage, 22...・・Exhaust partition plate, 23・・
...First outlet side space, 24...Air supply partition plate, 26...Second outlet side space. Name of agent: Patent attorney Toshio Nakao and one other person αfu U) Figure 2 Figure 3 Figure 4 Figure 5 fo'-4 40 copies

Claims (1)

[Claims] an indoor suction port and an indoor discharge port that communicate with the room;
A plurality of partition plates and spacing plates are alternately stacked inside the main body, which is provided with an outdoor suction port and an outdoor discharge port that communicate with the outdoors, and supply air flow and exhaust air flow are alternately orthogonal between the stacked layers. It has first and second square prism heat exchangers configured to flow, a supply air blower and an exhaust air blower, and the first and second heat exchangers are arranged so that the ridge line is horizontal, The air duct surfaces forming the air inlet or the air outlet are inclined at 45 degrees with respect to the horizontal plane, and arranged so that one ridgeline abuts each other, and the opposing air duct surfaces of the first and second heat exchangers and the It passes through a first space formed by the top surface of the main body and the exhaust passages of the first and second heat exchangers, connects the indoor suction port and the outdoor discharge port, and has the exhaust blower. a main body exhaust passage, a second space formed by opposing air passage surfaces of the first and second heat exchangers and a bottom surface of the main body, and an air supply passage of the first and second heat exchangers; , connecting the outdoor side suction port and the indoor side discharge port to form a main body air supply passage having the air supply blower independently from each other, without passing through the first space and the heat exchanger. an exhaust partition plate that opens and closes freely between the outlet side space of the exhaust passage of the heat exchanger; and an exhaust partition plate that freely partitions the second space and the outlet of the air supply passage of the heat exchanger without passing through the heat exchanger. A duct air conditioning ventilation fan formed by an air supply partition plate that can be opened and closed from the side space.