JPH0363439A - Air supply and exhaust device of ventilation unit - Google Patents

Abstract

PURPOSE:To shorten the working hours of constructors, bring the amounts of exhaust and air supply in an equal amount and form well-balanced amounts of exhaust and air supply by installing an exhaust fan and an air supply fan in the reverse-symmetrical location corresponding to an exhaust interconnecting hole and an air supply interconnecting hole opened symmetrically in the right and left sides in relation to a partition plate. CONSTITUTION:By the operation of an exhaust fan 29 and an air supply fan 35, an exhaust flow passage 31 and an air supply flow passage 37 are formed and the heat in the exhaust of room air is caused to exchange with supplied air at a total heat exchanger and the heat is recovered and ventilation is carried out. At this ventilation, the fans 29 and 35 locate mutually at the reverse-symmetrical location, that is, an induction zone 41 where sucked air amount is small is installed at the location corresponding to an interconnecting hole 27 in the flow passage side where a coarse dust filter 23 is used and flow resistance is small, and a guidance zone 40 where sucked air amount is large is installed at the location corresponding to an air supply interconnecting hole 33 in the flow passage side where a medium performance filter 25 is used and flow resistance is large and therefore, nearly equal amounts of exhaust and air supply can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air supply blower and an exhaust air blower for a ventilation unit installed in the attic of a building.

Conventional technology Conventionally, heat recovery type ventilation units have been installed in the ceilings of buildings, and these ventilation units have been widely used to reduce the load during heating and cooling and improve the indoor environment by providing ventilation functions. There is. Traditionally, these ventilation units
When indoor air is exhausted from the main body 1 of the ventilation unit 1 having the configuration shown in the figure, the air flows in from the indoor exhaust port 2 as shown by the arrow A-B, passes through the coarse dust filter 3 The outside air is circulated downward through the exhaust surface 6 of the total heat exchanger 4, passes through the exhaust communication port 7 provided in the partition plate 6, and connects to the exhaust flow path 1o that leads to the outdoor exhaust port 9 such as the exhaust fan a. In order to take in the air, it flows in from the outdoor air supply port 11 as shown by the arrow C-D, and the dust from the outside air is removed by the medium-performance filter 12.
The exhaust flow path 1 passes through the air supply port 13 of the total heat exchanger 4.
It exchanges heat with the heat in the air, recovers the heat, and circulates it downward, passes through the air supply communication port 14 provided in the partition plate 6, and then enters the air supply fan 16 provided at the same symmetrical position as the exhaust fan 8. A supply air passage 17 leading to the indoor air outlet 16 is formed to recover heat in the exhaust gas while ventilating the air-conditioned room, thereby reducing the air conditioning load.

Problems to be Solved by the Invention In such a conventional configuration, the exhaust fan 8 using a sirocco fan and the air supply fan 16 also using a sirocco fan are provided at the same symmetrical position. The amount and supply air amount are different. That is, the air volume passing through the coarse dust filter 3 and the air volume passing through the medium performance filter 12 are υ, which have different resistances depending on each filter, and the air volume passing through the coarse dust filter 3.
Since the resistance of is smaller than the resistance of medium performance filter 12,
Since the amount of air passing through the coarse dust filter 3 is larger than the amount of air passing through the middle-performance filter 12, the exhaust air amount becomes large, making it impossible to maintain a balance between exhaust air and air supply.

For this purpose, in order to make adjustments at the time of construction, an exhaust volume adjustment plate 18 is installed on the indoor exhaust port 2, and an air supply volume adjustment board 19 is installed on the outdoor air supply port 11, and the air supply volume adjustment plate 19 is slid. In order to match the air volume blown out from the outdoor exhaust port 9 and the air volume blown out from the indoor air outlet 16, it is necessary to measure the air volume using a measuring device or the like with a cross-axle, which is very time-consuming. There was an issue.

The present invention solves this problem by reducing the amount of air sucked into the fan by the relationship between the casing that houses the sirocco fan, the exhaust communication port provided on the partition plate, and the supply air communication port. The purpose of this project is to shorten the construction time of the builder by focusing on the above, and to make the exhaust volume and the air supply volume the same, thereby achieving a well-balanced exhaust volume and air supply volume.

Means for Solving the Problems In order to solve this problem, the present invention passes through an indoor exhaust port, through a coarse dust filter, through the exhaust surface of a total heat exchanger, through a partition plate, and then through an exhaust fan to the outside. The exhaust flow path leading to the exhaust port and the outdoor air supply port that communicates with the outdoors pass through a medium-performance filter, the air supply surface of the total heat exchanger, the air supply communication port of the partition plate, the air supply fan, and the indoor air. The exhaust fan and the air supply fan are provided in oppositely symmetrical positions corresponding to the exhaust communication port and the air supply communication port that are symmetrically opened in the partition plate, and are provided with an air supply flow path leading to the air outlet. Due to the structure of the exhaust fan, the intake flow in the guide area of the exhaust fan is arranged to be small, and an exhaust flow path with coarse dust particles is formed. A supply air flow path with a medium-performance filter is configured by arranging a large number of filters, and ventilation is provided in the exhaust flow path and the supply air flow path in correspondence with the coarse dust filter and the medium-performance filter, thereby adjusting the supply air amount and exhaust amount. Balance is maintained by each fan installed at an antisymmetrical position.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. As shown in FIG. 2, the main body 21 has an indoor exhaust port 22 as shown by the dotted arrow E in order to exhaust air from the indoor side.
More room air flows in, passes through the coarse dust filter 23, passes through the exhaust surface 24a of the total heat exchanger 24, and flows under the medium performance filter 26, and then through the exhaust communication port 27 opened below the partition plate 26. After that, a built-in sirocco fan was added to the casing 2.
An exhaust flow path 31 is formed which passes through an exhaust fan 29 housed at 8 and reaches an outdoor exhaust port 3o. - On the other hand, air is supplied from the outdoors through the outdoor air supply port 32, as shown by the solid arrow G.
The more inflowing air passes through the medium-performance filter 26 and the air supply surface 24b of the total heat exchanger 24 to the exhaust flow path 31.
The heat is recovered and passed through the bottom of the coarse dust filter 23 9 times to the air supply communication port 33 opened at the bottom of the partition plate 26.The air supply fan 36 has a built-in sirocco fan and is housed in a casing 34. An air supply flow path 37 is formed through which the air supply flow path 37 reaches the indoor air outlet 36, and the air supply fan 36 is provided at a position opposite to the exhaust fan 29. This is the second
In the figure, a front view of the partition plate 26 and each of the fans 29 and 35 will be shown and explained. That is, the exhaust air 71 fan 2e having a built-in sirocco fan and the air supply fan 35 having a built-in sirocco fan are installed at opposite positions to each other.

For example, in the case of the exhaust fan 29, the guide area 40 and the guide area 41 that occur during rotation of the fan include the engagement with the exhaust communication port 27 of the partition plate 26, and in the guide area 40 part, Taking note of the experimental results in which a large amount of air is sucked in and, conversely, a small amount of suction in the induction region 41, the exhaust fans 29 and the air supply fans 36 are placed in antisymmetrical positions. In other words, the exhaust flow path 31 using the coarse dust filter 23 has a lower capacity than the coarse dust filter 26 compared to the medium performance filter 26.
No. 3 has a coarse mesh, so there is a large amount of ventilation. Therefore, the intake amount is reduced in the induction region 41 of the exhaust fan 29 through the exhaust communication port 27, and vice versa for the air supply fan 36.

In the above configuration, the exhaust fan 29 and the air supply fan 36
In order to operate the system, the above-mentioned exhaust flow path 31 and supply air flow path 37 are formed, and the heat in the exhaust air of the room is exchanged with the air in the supply air in a total heat exchanger, and the heat is recovered and ventilated. . In this ventilation, the exhaust fan 29 and the air supply fan 36 are placed in antisymmetrical positions, that is, on the flow path side with less resistance where the coarse dust filter 23 is used, and the induction area 41 with a small suction air volume is placed on the exhaust communication port 27. In preparation for the corresponding positional relationship, the medium-performance filter 26 is used on the flow path side with high resistance, and the guide area 40 with a large intake air volume is provided in a positional relationship corresponding to the air supply communication port 33, thereby achieving a more even exhaust air. The amount and air supply amount can be obtained.

Effects of the Invention As is clear from the description of the embodiments described above, the present invention has the advantage that an exhaust fan on the exhaust flow path side equipped with a coarse dust filter having low ventilation resistance is connected to an exhaust communication port provided in a partition plate to reduce the intake air volume. On the other hand, the air supply fan on the air supply flow path side equipped with a medium-performance filter with large ventilation resistance is placed in a positional relationship that has a large intake air volume, corresponding to the air supply communication port provided on the partition plate, that is, the opposite symmetry. Since the exhaust fan side is installed at the same position, the exhaust amount will not be suppressed on the exhaust fan side, and the intake air amount and exhaust amount will be suppressed on the air supply fan side because the air supply amount is forcibly induced. are ventilated under approximately the same air volume,
This eliminates the imbalance in ventilation air volume and saves the installer's time. Therefore, there is no need for the troublesome effort of adjusting the adjustment plate while measuring with a measuring device, and this has the effect of contributing to shortening the construction work.

[Brief explanation of drawings]

Referring to FIG. 1, a ventilation unit according to an embodiment of the present invention is supplied and
A transparent perspective view of the exhaust system, Figure 2 shows the ventilation unit's supply and
FIG. 3 is a front view showing the positional relationship between the partition plate of the exhaust device, the exhaust fan button, and the air supply fan, and FIG. 3 is a plan sectional view of a conventional ventilation unit. 22... Indoor exhaust port, 23... Coarse dust filter, 24... Total heat exchanger, 24 &...
...Exhaust surface, 24b...Air supply surface, 26...
...Medium performance filter, 26...Partition plate, 27.
...Exhaust communication port, 29...Exhaust fan,
3o...Outdoor exhaust port, 31...Exhaust flow path, 32...Outdoor air supply port, 33...Air supply communication port, 36... ...Air supply fan, 36...
... Indoor air outlet, 37... Air supply flow path.

Claims (1)

[Claims] Exhaust flow path from the indoor exhaust port, through the coarse dust filter, through the exhaust surface of the total heat exchanger, through the exhaust communication port of the partition plate, through the exhaust fan, to the outdoor exhaust port, and the outdoor air supply port that communicates with the outdoors. A supply air flow path is provided, which passes through a medium-performance filter, passes through the air supply surface of the total heat exchanger, passes through the supply air communication port of the partition plate, passes through the supply air fan, and reaches the indoor air outlet, and is symmetrical to the partition plate. A supply/exhaust device for a ventilation unit, wherein the exhaust fan and the air supply fan are arranged in antisymmetrical positions corresponding to the open exhaust communication port and the air supply communication port.