JPS63217156A - Air conditioning ventilation fan for duct - Google Patents

Abstract

PURPOSE:To enable execution of heat exchange ventilation, ordinary ventilation, and air circulation by means of a low body height, by a method wherein, when first and third dampers are opened and second and fourth dampers closed to allow heat exchange function, an exhaust flow and a feed air flow are respectively branched to two heat exchangers. CONSTITUTION:With first-fourth dampers 23, 25, 26, and 27 switched, an air passage running from a suction port 2 on the indoor side through a first space part 16 and a heat exchanger 8 to a discharge port 5 on the outdoor side and an air passage running from a suction port 4 on the outdoor side through a second space part 19 and the other heat exchanger 8 to a discharge port 3 on the indoor side are formed for normal heat exchanging. Further, an air passage running from the suction port 2 ventilation on the indoor side through the first space part 16 to the discharge port 5 on the outdoor side and an air passage running from the suction port 4 on the outdoor side through the second space part 19 to the discharge port 3 on the indoor side are formed for ordinary ventilation. Moreover, an air passage running from the suction port 2 on the indoor side to the discharge port 3 on the indoor side and an air passage running from the suction port 4 on the outdoor side to the discharge port 5 on the outdoor side are formed for air circulation. This constitution enables decrease of a body height even when a high airflow is needed.

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 thermal energy from indoor air discharged outdoors through ventilation.

Conventional technology In recent years, heat exchangers have been developed as a means of ventilating rooms that are currently being cooled or heated, by exhausting dirty air from the room to the outside, bringing in fresh air from the outdoors, and using heat exchangers between the indoor air and outdoor air. Duct air conditioning ventilation fans have come into use that perform heat exchange through the process, transferring the thermal energy of the exhausted indoor air to the outdoor intake air and recovering it indoors.

In addition, it may be more economical and more comfortable to use a circulator to eliminate indoor temperature fluctuations during heating and cooling, and to supply outside air directly into the room during intermediate seasons such as spring and autumn, without going through a heat exchanger. There have also been requests for normal ventilation that can be ventilated by air.

Furthermore, since duct air-conditioning ventilation fans are generally installed in the ceiling, there was a demand for one with a low body height.

For this reason, the conventional duct air conditioning ventilation fan has an air supply passage 104 and an exhaust passage in a main body 103 that incorporates blowers 101 and 102 for taking in outside air and discharging indoor air, as shown in FIG. 6, for example. A heat exchanger 107 is provided at the intersection 106 of 105 with the longitudinal direction horizontal, and an exhaust bypass space 108 is provided on a route that does not pass through the heat exchanger 107.
A damper 111 that can be opened and closed is provided to partition the indoor suction section 109 and the exhaust outlet side space 110 of the heat exchanger 107.

Problems to be Solved by the Invention In such a conventional duct air conditioning ventilation fan, if a large air volume is required, a heat exchanger 10 with a relatively large air passage surface is required, and an exhaust bypass space 108 is also required. Therefore, the main body 103 is large and especially tall, the height of the ceiling is required to be high, the floor height of the building is high, and it is necessary to simply circulate the room without ventilation to reduce uneven temperature inside the room. To eliminate this problem, a circulator would have to be installed separately, which would increase construction costs for the building.

The present invention has taken into account the above-mentioned conventional problems, and provides an air conditioning ventilation fan for ducts that can reduce the height of the main body even if it is provided with a normal ventilation function and a circulation function in addition to heat exchange ventilation, and is advantageous in building construction costs. The purpose is to

Means for Solving the Problem In order to solve this problem, the present invention provides a plurality of heat exchangers in a main body in the shape of a rectangular prism and arranged in parallel with one edge line touching each other. A first space serving as an independent air passage is formed between the exhaust air passage surfaces, and a second space serving as an independent air passage is also formed between the supply air passage surfaces, and is connected to the indoor discharge port in the main body. A supply air blower is provided in the air path connected to the first air outlet, and an exhaust air blower is provided in the air path connected to the outdoor outlet. At each end of the second space, a first. Independent dampers are provided to open and close the second space, and heat exchange air, normal ventilation, and air circulation are performed by selectively opening and closing each of the dampers.

Effect In the above configuration, by switching the damper, the air passage from the indoor suction port to the first space, the heat exchanger to the outdoor discharge port, and the outdoor air intake port to the second space and the heat exchanger. an air path (heat exchange air path) from the indoor side suction port to the indoor side discharge port, an air path from the indoor side suction port to the outdoor side discharge port via the first space portion, and an air path from the outdoor side suction port to the outdoor side discharge port via the second space portion. Forms an air path leading to the indoor discharge port (ventilation air path), an air path from the indoor suction port to the indoor discharge port, and an air path from the outdoor suction port to the outdoor discharge port (circulation air path). It happens.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 4.

In the figure, 1 is the main body of the duct air conditioning ventilation fan, -
An indoor suction port 2 and an indoor discharge port 3 are provided on one side, and an outdoor suction port 4 and an outdoor discharge port 5 are provided on the other side, communicating with the outdoors. Inside the main body 1, a supply air blower 6 is provided in the air path leading to the indoor outlet 3, an exhaust air blower 7 is provided in the air path leading to the outdoor outlet 6, and two fans with the same specifications are installed. A heat exchanger 8°8 is installed. The heat exchangers 8, 8 are formed into a rectangular prism shape by alternately laminating a plurality of partition plates 9 and spacer plates 1o, and exhaust air so that the supply air flow and the exhaust air flow alternately flow orthogonally between the laminated layers. The passage 11 and the air supply passage 12 are formed, and the exhaust air passage surface 13a, which serves as the intake port for the exhaust air flow, and the supply air passage surface 13b, which serves as the intake port for the supply air flow, are inclined at 46 degrees with respect to the horizontal plane, and the exhaust air passage surface 13a and supply air road surface 13
The ridge lines 14 and 14 where b intersects are arranged so as to abut each other. Then, a first space 16 is formed surrounded by the exhaust air passage surfaces 13a, 13a of the air exchangers 8, 8 and the main body top surface 15, and the first space 16 is surrounded by the air supply air passage surfaces 13b, 13b and the main body 1.
A second space portion 19 is formed surrounded by the bottom surface 18 of. The indoor suction port 2 of the main body 1 communicates with the first space 16, so that the indoor suction port 2, the first space 16, and the exhaust passages 11 of the two heat exchangers 8, 8 are connected to the first space 16.゜1
1. A main body exhaust passage 17 leading to an exhaust blower 7 and an outdoor outlet 5 is formed. The outdoor suction port 4 communicates with the second space 19, and therefore the outdoor suction port 4 communicates with the second space 19.
Space 19. Air supply passages 12 for the two heat exchangers 8, 8.
12, a main body air supply passage 20 leading to the air supply blower 6 and the indoor discharge port 3 is formed. The main body air supply passage 20 and the main body exhaust passage 17 are formed independently from each other by an L-shaped partition wall 21.

Furthermore, the first part inside the main body 1. Second space 1
A damper that opens and closes independently is provided at each end of 6.19. That is, the indoor suction port 2 and the first space 16, and the indoor suction port 2 and the first outlet side of the air supply passage 12, 12 of the heat exchanger 8, 8 without passing through the heat exchanger 8, 8. Space part 22
A first damper 23 that can be opened and closed between the first damper 23 and a second outlet side space of the exhaust passages 11 and 11 of the heat exchangers 8 and 8 without passing through the first space 16 and the heat exchangers 8 and 8. 24, and a second damper 25 that partitions the outdoor suction port 4 and the second space 19, and also connects the outdoor suction port 4 and the heat exchangers 8, 8 without passing through the heat exchangers 8, 8. A third damper 26 that can open and close freely partitions off the second outlet side space 24 of the exhaust passage 11.11 of the exhaust passage 11.11, and a heat exchanger 8. 8, the first outlet side space 22 of the air supply passage 12.12
A fourth damper 27 is provided to open and close the partition.

In the above configuration, as shown in FIG. 1, two heat exchangers 8,
8, the first damper 23 and the third damper 26 are opened horizontally, and the second damper 26 and the fourth damper 2 are opened.
When the duct air conditioning ventilation fan is operated with 7 vertically oriented and closed, the indoor air is sucked in from the indoor suction port 2 by the exhaust blower 7, reaches the first space 16, and passes through one of the heat exchangers. The air is sucked into the exhaust air path surface 13a of the heat exchanger 8 and the exhaust air path surface 13a of the other heat exchanger 8, and passes through the exhaust air path 11. The other side bypasses the side surface of the main body 1, passes through the second outlet side space 24, and is similarly 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, and passes through the air supply passages 12 and 12, one of which is sucked into the suction port of the air supply blower θ, and the other bypasses the side surface of the main body 1 and passes through the first outlet side space 22. The air is also sucked into the air supply blower 6.

Air is then supplied from the indoor discharge port 3. Heat is exchanged between the exhaust air flow and the supply air flow in respective heat exchangers.

Next, when the heat exchangers 8, 8 are not passed as shown in FIG. Second. Third. Fourth damper 23°25.26,2
When the duct air conditioning ventilation fan is operated with all 7 opened in the horizontal direction, the indoor air is sucked in from the indoor suction port 2 by the exhaust blower 7, and is transferred to the first duct without passing through the heat exchangers 8, 8. The air is drawn directly from the space 16 through the second outlet side space 24 to the suction port of the exhaust blower 7, and is drawn into the outdoor side discharge port 6.
more excreted. On the other hand, the air outside the room is supplied by air supply m
e, the air is sucked in from the outdoor suction port 4, and the heat exchanger 8,
8, directly passes from the second space 19 under the first outlet side space 22, detours toward the air supply blower 6, is sucked into the suction port, and is supplied from the indoor side discharge port 3. It bothers me. The above exhaust flow and supply air flow do not exchange heat, but perform a so-called ventilation operation.

Furthermore, as shown in FIG. Second. Third. When the duct air conditioning ventilation fan is operated with all the fourth dampers 23, 25, 28. The air detours downward and directly passes through the first outlet side space 22 , is sucked into the suction port of the air supply blower 6 , and is supplied from the indoor side discharge port 3 . On the other hand, the air on the outdoor side is sucked in from the outdoor side suction port 4 by the exhaust blower 7, detours upward, passes directly through the second outlet side space 24, and enters the suction port of the exhaust blower 7. It is sucked in and discharged from the outdoor outlet 5. The above exhaust flow and supply air flow are from indoor to indoor, respectively.
It flows from outside to outside and is circulated as a circulator.

As described above, according to this embodiment, when a large amount of air is required, by increasing the total area of the exhaust air path surfaces 13a, 13a and the supply air path surfaces 13b, 131) of the two heat exchangers 8, 8. Each heat exchanger 8.8 can be small, and even if ordinary simultaneous supply/discharge function without heat exchange or circulation function is performed, it is not necessary to provide a new space or circulator for ordinary simultaneous supply/discharge function. There is no
Therefore, the height of the main body 1 can be reduced without increasing its size.

Effects of the Invention As is clear from the description of the embodiments above, the present invention has the following effects. Open the third damper, and open the second damper. When the fourth damper is closed and the heat exchange function is activated, by dividing the exhaust air flow and the supply air flow into two heat exchangers, the overall Since the area of the air passage can be increased, even when a large amount of air is required, the height of the main body can be lower than in the past. Furthermore, when all the dampers are opened for normal ventilation function, an extra space for normal ventilation is required as in the past, but now it is sufficient to just provide the dampers. Furthermore, if all the dampers were closed to provide a circulation function, a new circulator would have been required in the past, but a sufficient circulation function can be obtained just by providing dampers. Therefore, even if it has heat exchange ventilation function, normal ventilation function, and circulation function, the height of the space under the ceiling is low.
The floor height of the building can be lowered, and there is no need for new space for general ventilation or space for installing a circulator, which makes building construction advantageous.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of an air conditioning ventilation fan for a duct according to an embodiment of the present invention, showing the state of the heat exchange ventilation function, Fig. 2 is a perspective view of this heat exchanger, and Fig. 3 is a perspective view for the duct. FIG. 4 is a perspective view showing the normal ventilation function state of the air conditioning ventilation fan, FIG. 4 is a perspective view showing the circulation function state of the duct air conditioning ventilation fan, and FIG. 6 is a partially cutaway perspective view of a conventional duct air conditioning ventilation fan. be. 1...Main body, 2...Indoor suction port, 3
...Indoor discharge port, 4...Outdoor suction port, 6...Outdoor discharge port, 6...Air supply blower, 7... ...Exhaust blower, 8...
・Heat exchanger, 13a...Exhaust air road surface, 13b・
...Air supply air road surface, 14...Ridge line, 16.
...First space, 17... Main body exhaust passage, 19... Second space, 20... Main body air supply passage, 21... ...Partition wall, 22...
1st exit side space part, 23... 10th damper,
26...Second damper, 26...Third
damper, 27...4th damper. Name of agent: Patent attorney Toshi Nakao and 1 other person 1-11 Aiya 2-4 I'l territory n1ba. 3-・l Discharge port 4-. S-=, Discharge port C・-H 摥昂区臥来子7-・-frame 久昂sug--一换文■No.j7- HongWeichung-ro 23---fl-Danha 1 2S- - One year old! No pu 21°゛ - 34 a 8- difference giving and drinking Fig. 3

Claims (1)

[Claims] The main body is provided with an indoor suction port and an indoor discharge port that communicate with the room, and an outdoor suction port and an outdoor discharge port that communicate with the outdoors,
A plurality of heat exchangers having a rectangular prism shape and arranged in parallel with one ridgeline abutting each other are provided in the main body, and a first space portion serving as an independent air path between the exhaust air path surfaces of each heat exchanger. At the same time, a second space is formed between the air supply air passages, which also serves as an independent air passage, and an air supply blower is provided in the air passage connected to the indoor outlet in the main body, and an outdoor air outlet is provided. An exhaust blower is provided in the air passage leading to the outlet, and independent dampers for opening and closing the first and second spaces are provided at both ends of the first and second spaces, and each of the dampers By the selected opening/closing, (1) the air passage from the indoor suction port to the first space, the heat exchanger, and the outdoor discharge port, and the outdoor air intake to the second space, via the heat exchanger; An air path (heat exchange air path) leading to the indoor outlet, (2) an air path leading from the indoor air inlet to the outdoor air outlet via the first space, and a second space from the outdoor air inlet. (3) An air path from the indoor suction port to the indoor discharge port and an air path from the outdoor suction port to the outdoor discharge port (circulation air path).
An air-conditioning ventilation fan for a duct configured to switch between and.