JPH0830597B2 - Ventilation unit for outdoor air cooling - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention intends to obtain an optimum air conditioning environment in a room at all times by reliably and economically performing not only the ventilation of the room and the introduction of fresh outside air but also the humidification function by one unit. In particular, the present invention relates to an outside air cooling / combining ventilation unit that can also perform outside air cooling during an intermediate period.

[0002]

2. Description of the Related Art Throughout the four seasons, it is necessary to take in fresh air into the room and to ventilate it in place of the above heating and cooling during the seasons where heating and cooling are not required, for example, from April to June. Normally, as the structure of this type of ventilation unit, the indoor intake part and the outside air introduction part are composed of different structures, so even if the above is formed with the same structure, it is a small cabin. It is extremely difficult to accommodate and arrange a large number of mechanical devices having completely different functions such as intake and exhaust, including the total heat exchanger, in view of the space, and it is very difficult to cool the outside air in the ventilation unit having such a structure. It is completely impossible to form a by-pass passage for use. Further, if the above-mentioned outside air and air supply by-pass passages are provided outside the unit main body, there is a problem that the overall shape becomes very bulky and a vast installation area is required.

[0003]

In view of the above-mentioned drawbacks, the present invention makes it possible to simultaneously perform all the work of sucking in and exhausting indoor air through one season with a single unit device, and in particular, the outside air cooling at the beginning can be performed. Its main purpose is to provide an outdoor air-cooling / ventilation unit that is optimal as an energy-saving machine that can immediately obtain a refreshing indoor environment.

[0004]

As a means for achieving the above-mentioned object, the outdoor air-cooling and ventilation unit according to the present invention has a total heat exchanger 2 arranged vertically in the center of the inside of a machine body 1 as shown in the illustrated example. Installed, and centering on the total heat exchanger 2, partition plates 3 and 3 are provided on the left and right sides of the total heat exchanger 2 to partition and form the air supply chamber 4, the return air chamber 5, the exhaust chamber 6, and the outside air introduction chamber 7, respectively. Is provided with substantially U-shaped ventilation passages A, A, and air supply / exhaust bypass passages B, B are provided at appropriate places such as a lower portion or an intermediate portion of the total heat exchanger 2, and the left and right ventilation passages A, A are provided. It is characterized in that it is formed so as to be communicated with the bypass passages B and B, and supply and exhaust passage switching dampers 21a and 21b are provided in the bypass passages B and B, respectively.

[0005]

Operation: The ventilation unit is installed and installed in a predetermined place such as indoors or outdoors, and is provided with an air supply port 8,
Return air port 9 to indoor side, outside air intake 10, exhaust port 11
Each of the intake and exhaust ports is connected to a duct or directly communicates with the inside and outside of the room, and is returned when heat exchange is necessary, and an exhaust blower 12, 1
As shown in FIG. 2 by operating the air conditioner 3, the air in the room flows from the return air port 9 into the return air chamber 5, and this is partially due to the action of the total heat exchanger 2. While being absorbed, the amount of heat flows through the air passage A and is discharged to the outside through the exhaust port 11. Further, the flow of air on one side is that fresh air is sucked into the machine from the outside air intake 10 and flows into the total heat exchanger 2 through the outside air introduction chamber 7, but the total heat exchanger 2 sends an appropriate amount of heat. Heat exchange coil 12 and humidifier 15 in the air chamber 4
It is possible to supply the air from the air supply port 8 to the room while heating or cooling and humidifying at. However, as described at the beginning, when air conditioning is not required in the room such as in the middle of the season, or when the temperature difference between the inside and the outside is significant, the supply / exhaust passage switching damper 21a provided in the bypass passages B, B is provided. As shown by arrows in FIG. 3, the flow of the outside air and the return air that flow through the inside of the machine by opening and closing the valves 21 and 21b mutually causes the fresh outside air from the outside air intake 10 to be the total heat exchanger described above. 2, supply without passing the heat exchange coil 14, exhaust bypass passage B,
It is possible to easily obtain effective outside air cooling, such as sending the outside air directly to the room through B.

[0006]

Embodiments of the present invention will now be described with reference to the drawings, in which 1 is provided with an air supply port 8, a return air port 9 and an outside air intake port 10 and an exhaust port 11 at the upper part thereof. A total heat exchanger 2 is installed vertically at the center of the inside of the machine body, and substantially U-shaped ventilation passages A, A are formed on both left and right sides of the total heat exchanger 2 as an axis. A return air blower 12 and an exhaust air blower 13 are installed at the lower bottoms of the air passages A and A on the left and right sides, respectively, which communicate with the suction and air outlets, respectively. Further, the upper chambers on both the left and right sides of the air passages A, A are divided into an air supply chamber 4, a return air chamber 5, an exhaust chamber 6 and an outside air introduction chamber 7 by partition plates 3 and 3 respectively. The left and right partition plates 3 and 3 are the total heat exchanger 2 as shown in FIG.
By forming the compartments in the inverted C shape with the axis as the axis, the shape of each compartment formed by each compartment has a triangular shape, and the suction port diameter is expanded to facilitate the return and intake of air. Has a function of effectively sending the entire amount of the received air toward the total heat exchanger 2 direction. Further, the inclined arrangement of the partition plates 3 and 3 expands the area inside the air supply chamber 4 and the exhaust chamber 6 on the left and right sides. The vaporization type humidifier 15, the drain pan 16, the filter 17.18, the control device 19, and other necessary mechanical devices can be easily arranged. The humidifying mechanism may be installed in any type such as an electric type, a spray type, etc. in addition to the vaporizing type. However, in the present invention, the exhaust chamber 6 formed by the partition plate 3 and the outside air introduction By using a space such as the chamber 7 and connecting the humidifier supply source mechanism and the mechanism such as the deionizer to the humidifier 15 that can be installed in another room with a pipe, the humidifier 15 can be installed outside the conventional equipment. It can be installed very conveniently without installing it. According to the present invention, in the floor-standing type ventilation unit formed as described above, the air supply and exhaust bypass passages B and B are formed below the total heat exchanger 2 in communication with the left and right air passages A and A. Further, a damper 2 for switching air supply and exhaust passages in the bypass passages B, B.
1a and 21b are arranged. By opening / closing the supply / exhaust passage switching dampers 21a, 21b by the operation of the damper motor 21c, the bypass passages B, B are opened, and the outside air flows from the outside air inlet 10 to the bypass passages B, B on the intake side. It is possible to supply the air directly from the air supply port 8 to the room to easily obtain the outside air cooling. Simultaneously with the above, the polluted air in the room introduced from the return air port 9 to the inside of the machine is discharged to the outside of the room directly from the exhaust port 11 through one exhaust bypass path B. The air supply / exhaust bypass passages B, B are formed by arranging the supply / exhaust passages in parallel below the total heat exchanger 2, but in some cases, an intermediate portion of the total heat exchanger 2, Alternatively, it may be formed and provided at an appropriate place such as an upper portion.

Further, according to the present invention, as shown in FIG. 3, an air supply port 8, a return air port 9, an outside air intake port 10, and an exhaust port 1 are provided on an upper portion of the machine body 1.
It is also possible to obtain a better muffling effect by integrally opening and closing each of the suction / exhaust ports 1 and integrally providing a muffling chamber 20 provided with an appropriate muffling mechanism in the machine.

Further, according to the present invention, by attaching the front panel 22 to the front surface of the machine body 1 so as to be openable and closable, the maintenance work inside the machine body from the front surface of the machine body 1 can be performed very conveniently and easily.

[0009]

As described above, according to the present invention, the total heat exchanger 2 is installed in the center of the machine body 1, and the air supply / exhaust bypass passages B, B are blown below the total heat exchanger 2 on both sides. It is formed so as to communicate with the passages A, A, and is supplied into the air supply / exhaust bypass passages B, B, and the exhaust passage switching damper 21a,
Since b is provided so that the passage can be freely switched, when there is a temperature difference between the indoor and outdoor due to the switching operation by the dampers 21a and 21b, the total heat exchanger 2 can surely recover heat. It has the effect that the refreshing indoor environment can be easily obtained by the direct introduction of outside air with a simple structure in the season such as the middle season when air conditioning is not required. In particular, when the outside air is cooled, the wind flow naturally flows into the bypass passages B, B below the airframe due to the difference in static pressure, so that better effects can be expected. In addition, according to the present invention, it is not necessary to provide a ventilation passage for a bypass outside the machine as in the conventional case. Therefore, it is possible to make the entire machine compact so that the entire machine can be compactly formed. By forming the substantially U-shaped ventilation passages A, A and partitioning the chambers such as the air supply chamber 4 and the exhaust chamber 6 by the partition plates 3 and 3, the respective interior spaces are utilized. Heat exchange coil 14, humidifier 15, drain pan 1
6, each mechanical device required such as a filter 17.18 can be easily accommodated, and the total heat exchanger 2, which is heavy, is installed in the center, and blowers 12 and 13 for returning air and exhaust are provided on the left and right bottoms. As a result, there is also an effect that the entire aircraft can be installed more stably.

As described in claim 2, in the present invention, each intake and exhaust port such as the air supply port 8, the return air port 9, the outside air intake port 10, the exhaust port 11 is opened in the upper part of the machine body 1. It goes without saying that a better silencing effect can be expected in addition to the above-described natural silencing in the air passage by integrally providing the silencing chambers 20 in an integrated manner.

According to the third aspect of the present invention, the front panel 21 is attached to the front part of the machine body 1 so as to be openable and closable, so that the furniture style can be easily obtained in harmony with the room and the maintenance is required. In some cases, the front panel 22
By simply opening the door to the front, all of the inside of the mechanism is exposed on the surface, so that maintenance work inside the machine can be performed very safely, reliably and easily.

[0012]

[Brief description of drawings]

FIG. 1 is a plan view of a ventilation unit according to the present invention,

FIG. 2 is a front view schematically showing the internal structure,

FIG. 3 is an explanatory view showing a flow body of wind during heat exchange operation and outside air cooling according to the present invention;

FIG. 4 is a front view according to another embodiment of the same.

[Explanation of symbols]

 2 Total heat exchanger 8 Air supply port 9 Return air port 10 Outside air intake 11 Exhaust port 14 Heat exchange coil 20 Silencer chamber 21 Supply and exhaust passage switching damper A Blower passage B Air supply, exhaust bypass bus passage

Claims (3)

[Claims] 1. A total heat exchanger 2 is installed vertically at the center of the inside of an airframe 1, and an air supply chamber 4 and a return air chamber are provided by partition plates 3 and 3 on the left and right of the total heat exchanger 2 as a center. 5 and the exhaust chamber 6 and each of the outside air introduction chamber 7 are partitioned and formed, and an air supply port 8, a return air port 9 and an outside air intake port 10, and an intake / exhaust port of the exhaust port 11 are opened in the upper part of the machine body 1, The U-shaped air passages A, A are formed in the machine so as to communicate with the respective air intake / exhaust ports, and the space is formed downward in each chamber such as the air supply chamber 4 and the exhaust chamber 6 formed above. A return air blower 12, an exhaust blower 13, and a heat exchange coil 14, a humidifier 15, and a drain pan 1 on the upper part thereof.
6, a filter 17.18, a control device 19, and other necessary mechanical devices are arranged and provided in a floor-standing ventilation unit for supplying or exhausting air to an appropriate place such as a lower part or an intermediate part of the total heat exchanger 2. By-pass passages B, B are formed so as to communicate with the above-mentioned left and right air passages A, A, and are supplied to the respective by-pass passages B, B, exhaust passage switching dampers 21a, 2
A ventilation unit that also serves as an outdoor air cooler, which is provided with 1b. 2. The ventilation unit according to claim 1, wherein the air intake port 8, the return air port 9, the outside air intake port 10, and the exhaust port 11 are appropriately provided in the upper portion of the machine body 1. A ventilation unit that also functions as an outside air cooling, characterized in that the muffling chambers 20 are integrally connected. 3. The ventilating unit according to each of the above claims, wherein the front panel 22 is attached to the front opening of the machine body 1 so as to be freely opened and closed.