JPS5813236Y2 - ventilation system - Google Patents

Description

[Detailed explanation of the invention] This invention can be installed in places where it is desirable to constantly have a small amount of ventilation, such as a living room, by sucking fresh air from outside into the room and exhausting contaminated air from inside the room. In addition, when the degree of indoor air pollution increases due to a large number of people entering the room and smoking, the damper is switched to increase the amount of indoor air exhausted, so that the amount of indoor air is always commensurate with the degree of contamination. This relates to ventilation fans that provide ventilation.

Conventionally, general ventilation fans installed in living rooms etc. have been able to change the rotational speed of the electric motor to change the ventilation amount depending on the degree of air pollution in the living room, but when operating at low speed, the ventilation air volume is Because of their small size, the flow of indoor air is small, and there is a problem that sufficient ventilation cannot be achieved at a location far from the location where the ventilation fan is installed.

In addition, a forced exhaust flow path with a blower installed in the center is formed, and an intake flow path is provided outside of the exhaust flow path, and outdoor air is taken in from the intake flow path due to the pressure difference between indoors and outdoors. However, since the exhaust flow path and the intake flow path are provided close to each other, fresh outside air taken in through the intake flow path flows more easily to the exhaust flow path, and the fresh air taken in through the intake flow path also flows more easily. It is not possible to effectively send the contaminated air inside the room to the exhaust flow path, and as a result, there is a problem in that the contaminated air cannot be smoothly exhausted at a location far from the location where the ventilation fan is installed.

This invention is configured so that indoor air and outdoor air are taken into the air intake port of the blower, and the exhaust flow of the blower can be completely exhausted outdoors by switching the damper, or some of the air can be exhausted, and other air can be passed through the duct. The system is configured to circulate air by exhausting the air to a corner of the room through a ventilator, and when the indoor air is highly contaminated, the intake amount of outdoor air is adjusted and the entire exhaust flow from the blower is discharged outside to improve ventilation. Do.

When the degree of indoor air pollution is low, the amount of outdoor air taken in is increased and dampers are switched to exhaust part of the exhaust flow from the blower, and the rest is discharged into the room from a corner of the room via a duct. The purpose of this project is to provide a ventilation system that circulates a portion of the indoor air, improves the flow of indoor air, and prevents contaminated air from accumulating in a certain area for a long time, allowing for smooth ventilation. do.

The present invention will be explained below with reference to the drawings showing one embodiment thereof.

1 is a casing of a blower with a fan 2 installed therein, 3 is an electric motor that drives the fan 2, 4 is an indoor air inlet provided in the casing 1, and 5 is a fan that penetrates the side wall of the indoor air inlet 4. The provided outdoor air suction port communicates with the outside through a duct 6, and a damper 8 whose opening degree is adjusted by a damper drive motor 7 is provided inside the duct 6.

Reference numeral 9 denotes a circulating air exhaust port that is provided in communication with the exhaust port 10 of the casing 1, and communicates with a corner of the room via a circulation duct 11.

Reference numeral 12 denotes an indoor air outlet which is provided to communicate with the exhaust port 10 of the casing 1 at a position approximately 90' from the circulating air outlet 9, and its end communicates with the outside.

13 is a wall provided between the circulating air outlet 9 and the indoor air outlet 12, and 14 is an exhaust provided in the cavity 15 formed by the circulating air outlet 9, the indoor air outlet 12, and the wall 13. In the flow switching damper, one damper piece from the fulcrum is formed shorter than the other damper piece, and when the exhaust flow switching damper 14 is set at the position shown by the solid line in the figure, the circulating air outlet 9 is opened and the indoor air is exhausted. The short side of the exhaust flow switching damper 14 is located on the outlet 12 side, so that a part of the indoor air outlet 12 is opened, and when the exhaust flow switching damper 14 moves to the position indicated by the dashed line, the circulating air outlet 9 is closed, and the indoor air exhaust port 12 is configured to be fully opened.

16 is a damper driving motor for the exhaust flow switching damper 14.

When the degree of contamination of the indoor air is low, the damper 8 installed in the duct 6 is opened by driving the damper drive motor 7, while the exhaust flow switching damper 14 is opened as shown by the solid line in the figure. The motor 16 is driven and set, and the fan 2 is driven by the electric motor 3.

When the fan 2 is driven, indoor air is sucked in from the indoor air suction port 4, and outdoor air is also sucked in from the outdoor air suction port 5 through the duct 6, and the mixed state is sent to the exhaust port 10 of the casing 1. From the exhaust port 10, the circulating air passes through the circulating air outlet 9 and is discharged into the room through the circulating duct 11, and is also sent to the indoor air outlet 12 through the opening where a portion of the indoor air outlet 12 is opened, and is discharged outdoors. Exhausted.

Therefore, the indoor air and outdoor air are taken into the fan 2, so the amount of indoor air exhausted is reduced.Furthermore, since the indoor air outlet 12 is only partially opened by the exhaust flow switching damper 14, the amount of air exhausted to the outdoors is reduced. This makes it possible to exhaust a small amount.

On the other hand, the indoor air flows due to the airflow discharged into the room from the circulating air outlet 9, and the air floating in corners of the room is more likely to flow and be easily sucked in through the indoor air intake port 4.

Next, when the indoor air is highly contaminated, the damper 8 in the duct 6 is driven by the damper drive motor 7 to close the duct 6, while the exhaust flow switching damper 14 is moved to the position shown by the dashed line in the figure. The drive motor 16 drives and sets the fan 2, and the electric motor 3 drives the fan 2.

When the fan 2 is driven, only indoor air is sucked into the fan 2 through the indoor air intake port 4 and the exhaust port 1 of the casing 1
0, and the exhaust air is completely discharged to the outside from the indoor air outlet 12.

As is clear from the above embodiments, the ventilation system of the present invention is configured such that the suction port side of the fan sucks indoor air and outdoor air, and the exhaust port side is provided with an exhaust flow switching damper to control the exhaust flow. It is configured to exhaust all of the exhaust air outside, or exhaust part of the exhaust air outside, and circulate the remaining exhaust air indoors, so when the indoor air pollution level is low,
By sucking indoor air and outdoor air, exhausting part of it outside and circulating the rest indoors, even though the amount of indoor air exhausted is small, the air that is circulated indoors can be circulated through the indoor air intake port. By discharging the air far away, the flow of indoor air improves, making it easier for contaminated air in the corners of the room to move toward the indoor air intake, allowing polluted air to be efficiently exhausted outdoors even with a small amount of exhaust. It is possible,
Furthermore, when the indoor air is highly contaminated, all the indoor air that has been drawn in is exhausted outside, so even when the indoor air is highly contaminated, the contaminated air can be efficiently exhausted outside.

[Brief explanation of drawings]

FIG. 1 is a plan sectional view of a ventilation system showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 2...Fan, 4...Indoor air inlet, 5...Outdoor air inlet, 8...Damper, 9...Circulation Air outlet, 12...
・Indoor air exhaust port, 14...exhaust flow switching device

Claims (1)

[Scope of utility model registration request] An indoor air suction port and an air suction port equipped with a damper that opens and closes an air flow path are provided on the suction side of the fan, and a circulating air discharge port that is exhausted into the room via a circulation duct is provided on the exhaust side of the fan. An indoor air outlet communicating with the outdoors, a cavity formed by a wall provided over the indoor air outlet and the circulating air outlet, and one damper piece formed from a fulcrum to be shorter than the other damper piece. , an exhaust flow switching damper provided in the wind barrel so as to be able to open and close the indoor air outlet and the circulating air outlet; A ventilation system that is arranged so that it can be closed by leaving an opening in a portion of the indoor air outlet.