JP2769197B2 - Ventilation unit supply / exhaust device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower for supplying air and a blower for exhausting a ventilation unit installed in the ceiling of a building.

Conventional technology Conventionally, a heat recovery type ventilation unit is installed in the back of the ceiling of a building, a load at the time of cooling and heating is reduced, and the ventilation unit that improves the indoor environment by having a ventilation function is often used. I have. Conventionally, such a ventilation unit has a configuration as shown in FIG. That is, when ventilating indoor air, the main body 1 of the ventilation unit flows from the indoor exhaust port 2 as shown by arrows AB, passes through the coarse dust filter 3 and passes through the exhaust surface 5 of the total heat exchanger 4. The exhaust passage 10 extends from the exhaust fan 8 to the outdoor exhaust port 9 through the exhaust communication port 7 provided in the partition plate 6 to the outside exhaust port 9. As shown in the drawing, the medium-performance filter 12 removes dust from the outside air, passes through the air supply surface 13 of the total heat exchanger 4, exchanges heat with the heat in the exhaust passage 10, and recovers heat. It goes down and the partition plate 6
An air supply passage 17 is formed from an air supply fan 15 provided at the same symmetrical position as the exhaust fan 8 through an air supply communication port 14 provided in the air supply passage 17 to an indoor air outlet 16, while ventilating the air-conditioned room. The heat in the exhaust gas was recovered to reduce the air conditioning load.

In such a conventional configuration, since the exhaust fan 8 using the sirocco fan and the air supply fan 15 also using the sirocco fan are provided at the same symmetrical position, the exhaust The quantity and supply air are different. That is, the resistance of the air flow passing through the coarse dust filter 3 and the air flow passing through the medium performance filter 12 differs for each filter.
Is smaller than the resistance of the medium-performance filter 12, the airflow passing through the coarse dust filter 3 becomes larger than the airflow passing through the medium-performance filter 12, and the exhaust airflow becomes large. I can't get it. Therefore, in order to adjust at the time of construction, an exhaust volume adjusting plate 18 is provided at the indoor exhaust port 2, and an air supply amount adjusting plate 19 is provided at the outdoor air supply port 11 and slid. It has to be measured using a measuring device or the like so that the air volume blown out from the outdoor exhaust port 9 and the air volume blown out from the indoor air outlet 16 are inconvenient. .

The present invention solves such a problem, and focuses on the difference in the amount of air sucked into the fan due to the relationship between a casing housing a sirocco fan, an exhaust communication port provided in a partition plate, and an air supply communication port. It is an object of the present invention to shorten the construction time of the builder, and to make the exhaust amount and the air supply amount equal to each other so that the exhaust amount and the air supply amount are balanced.

Means for Solving the Problems In order to solve this problem, the present invention provides an exhaust fan through an exhaust surface of a total heat exchanger through a coarse dust filter from an indoor exhaust port, and an exhaust fan through an exhaust communication port of a partition plate. From the exhaust flow path to the outdoor exhaust port and the outdoor air supply port communicating outdoors, pass through the medium heat filter, pass through the air supply surface of the total heat exchanger, and pass through the air supply fan through the air supply communication port of the partition plate. An air supply passage leading to an indoor air outlet is provided, and an induction area is provided on the exhaust communication port side of the exhaust fan such that a guide area is provided on the air supply communication port side of the air supply fan, respectively, to balance ventilation air volume. This is an improved configuration.

Operation With this configuration, the exhaust fan is arranged so that the suction amount in the induction region is small, thereby forming an exhaust passage provided with a coarse dust filter, and arranged so that the suction amount in the guide region of the air supply fan is large. To form an air supply passage with a medium-performance filter, and ventilating the exhaust passage and the exhaust passage corresponding to the coarse dust filter and the medium-performance filter, and providing the supply amount and the exhaust amount at anti-symmetric positions. The balance will be balanced by each fan.

An embodiment according to the present invention will be described below with reference to FIGS. 1 and 2. In FIG. 1 and FIG. 2, in order to exhaust the indoor air, the main body 21 receives the indoor air from the indoor exhaust port 22 as indicated by a dotted arrow E, passes through the coarse dust filter 23, and passes through the total heat exchanger 24. Through the exhaust surface 24a of the medium-performance filter 25
Through the exhaust communication port 27 opened below the partition plate 26, a sirocco fan is built in, and an exhaust passage 31 is formed to reach the outdoor exhaust port 30 through the exhaust fan 29 housing in the casing 28. doing. On the other hand, as shown by the solid line arrow G, air supplied from the outside flows through the air supply port 32, passes through the medium-performance filter 25, passes through the air supply surface 24b of the total heat exchanger 24, and exhausts the air. Heat is recovered from the flow path 31 and flows to the air supply communication port 33 opened below the partition plate 26 so as to go around the lower side of the coarse dust filter 23, and a sirocco fan is built in and the supply is carried out in a casing 34. An air supply passage 37 is formed through the air fan 35 to the indoor outlet 36, and the air supply fan 35 is provided at an anti-symmetric position with the exhaust fan 29. This is shown in FIG. 2 by the partition plate 26 and each fan 29,3.
5 is shown and explained. That is, the exhaust fan 29 having a built-in sirocco fan and the air supply fan 35 also having a built-in sirocco fan are provided at antisymmetric positions with respect to each other. This is because, for example, in the case of the exhaust fan 29, the guide area 40 and the guide area 41 generated during the rotation of the fan are largely sucked in the guide area 40, including the engagement with the exhaust communication port 27 of the partition plate 26. On the contrary, paying attention to the fact that an experimental result with a small suction amount is obtained in the induction region 41, each exhaust fan 29 and the air supply fan 35 are set in antisymmetric positions. That is, in the exhaust passage 31 using the coarse dust filter 23, the coarse dust filter 23 is coarser than the medium performance filter 25, and therefore, the ventilation volume is large. Therefore, through the exhaust communication port 27, the exhaust fan 29 reduces the suction amount in the induction area 41, and the air supply fan
In 35, the opposite is true.

In the above configuration, by operating the exhaust fan 29 and the air supply fan 35, the above-described exhaust flow path 31 and the air supply flow path 37 are formed, and the heat in the exhaust of the room air is reduced by the total heat and the air in the air. Heat recovery and ventilation while exchanging heat with an exchanger. In this ventilation, the exhaust fan 29 and the intake fan 35 have anti-symmetrical positions with each other, that is, the induction area 41 with a small intake air volume corresponds to the exhaust communication port 27 on the flow path side with less resistance using the coarse filter 23. The medium area filter 25 is used to guide the large suction
By preparing the positional relationship corresponding to the air supply communication port 33 with 40,
Almost equal exhaust and supply volumes are obtained.

Effect of the Invention As is clear from the description of the embodiment, the present invention provides an exhaust fan on the exhaust flow path side provided with a coarse dust filter having a low ventilation resistance in accordance with an exhaust communication port provided on a partition plate. The air supply fan on the air supply flow path side provided with a medium-performance filter with large ventilation resistance has a small positional relationship, while the air intake fan provided on the partition plate has a large air intake volume corresponding to the air supply communication port. Position, the exhaust air volume is reduced on the exhaust fan side, and the supply air volume and the exhaust air volume are forcibly induced on the air supply fan side. The ventilator is ventilated under almost the same air volume, and the imbalance of the ventilation air volume is eliminated. Therefore, there is no need for complicated work such as adjusting the adjustment plate while measuring with a measuring instrument, and it has an effect of contributing to shortening of construction work.

[Brief description of the drawings]

FIG. 1 is a perspective perspective view of a supply / exhaust device of a ventilation unit according to an embodiment of the present invention, and FIG. 2 shows a positional relationship between a partition plate of the supply / exhaust device of the ventilation unit, an exhaust fan, and an air supply fan. FIG. 3 is a plan sectional view of a conventional exhaust unit. 22 ... indoor exhaust port, 23 ... dust filter, 24 ... total heat exchanger, 24a ... exhaust surface, 24 b ... air supply surface, 25 ... medium-performance filter, 26 ... partition plate, 27 ... ... Exhaust communication port, 29 ... Exhaust fan, 30 ... Outdoor exhaust port, 31 ... Exhaust flow path, 32 ... Outdoor air supply port, 33 ... Air supply communication port, 35 ... Air supply fan, 36 ...
… Indoor outlet, 37… air supply passage, 40… guide area, 41…
Guiding area.

Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24F 7/08

Claims (1)

(57) [Claims] 1. An exhaust passage from an indoor exhaust port, through a dust filter, through an exhaust surface of a total heat exchanger, through an exhaust communication port of a partition plate, through an exhaust fan, to an outdoor exhaust port, and outdoors. An air supply passage from the outdoor air supply port through the medium-performance filter, through the air supply surface of the total heat exchanger, through the air supply communication port of the partition plate, through the air supply fan, and to the indoor air outlet of the partition, An induction area is provided on the exhaust communication port side of the exhaust fan such that a guide area is provided on the air supply communication port side of the air supply fan, respectively.
Exhaust device.