JPH03194340A - Wind force ventilation system - Google Patents

Abstract

PURPOSE:To achieve effective ventilation of indoor space and to reduce cost of air conditioning facilities by operating a damper at a ventilating port utilizing differences in wind pressure due to differences in wind direction and wind velocity outside buildings in the ventilation of a space of large volume such as a large space. CONSTITUTION:Ventilating ports 2 communicating with a space to be ventilated through a ventilating duct are provided at the upper and lower positions in the outer wall of a building. A control unit 11 controls a motor damper 6 in response to the output of a wind pressure sensor 9 to open the ventilating port 2 on the windward side and close the ventilating port 2 on the downwind side when the outside air is supplied and vice versa when the air is discharged. And by signals from a differential pressure gage 10, an orifice operation unit 7a is controlled to adjust the opening of an orifice 7 to optimize the wind velocity in the space to be ventilated. Further, a changeover valve 13 is connected through a by-pass duct 15 to an air conditioning system 14. The control unit 11 is adapted to be controlled by means of a microcomputer to provided a variable ventilation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention enables natural ventilation by actively utilizing wind energy outside the building for ventilation of indoor spaces such as factories and atriums. related to wind ventilation systems.

[Prior Art] In general, indoor ventilation is forcibly performed by sending or drawing air into the room using a mechanical device such as a fan. On the other hand, in factories, atriums, etc., natural ventilation may be used without using mechanical equipment such as air conditioning equipment.

In this case, monitors and openings are installed on the roof, etc., as well as openings on the floor to create a natural flow within the room by utilizing the temperature difference in the air caused by the heat generated indoors and the negative pressure caused by the wind. It is ventilated.

[Problems to be Solved by the Invention] When using mechanical ventilation such as an air conditioner, running costs are high and it is uneconomical even when only air is taken in from outside.

Furthermore, with conventional ventilation methods using monitors, it is difficult to actively bring in outside air and exhaust it from the room in response to changes in wind direction and speed. Furthermore, when taking in and discharging air, it is extremely difficult to control the wind speed and direction of flow in the indoor space to be constant, making it impossible to achieve desired ventilation.

Therefore, when ventilating a space with a large volume such as a large space, the present invention utilizes the wind pressure difference caused by the difference in wind direction and wind speed outside the building to effectively ventilate the indoor space. The aim is to reduce initial costs and running costs.

[Means for Solving the Problems] The wind ventilation system of the present invention achieves the above-mentioned object, and has ventilation openings provided on the outer walls of the building in different directions, and each ventilation opening is controlled to open and close based on wind pressure. A motor damper should be provided. Then, by opening the motor damper of the windward side ventilation opening and closing the motor damper of the leeward side ventilation opening, outside air is supplied into the building, and by opening and closing the motor damper of each ventilation opening in the opposite direction, the inside of the building is Exhaust air to the outside.

By providing the ventilation port with an orifice whose opening degree can be adjusted, the wind speed of outside air supply can be adjusted to an appropriate level. The wind pressure at each ventilation port is detected by a wind pressure sensor installed at that location, and the motor damper and orifice are controlled by a control unit.

[Operation] In the wind ventilation system described above, when outside air is supplied into the building, the motor damper of the ventilation opening on the windward side, where the wind pressure is higher, is opened based on the detection of the wind pressure sensor, and the motor damper of the ventilation opening on the leeward side, where the wind pressure is lower, is opened. The orifice is closed and the orifice is narrowed to provide the appropriate air resistance to ensure that the ventilation within the building achieves the appropriate wind speed. In this state, air pressure is higher on the windward side than inside the building, so outside air flows into the building through the open motor damper and is ventilated.

When exhausting the air inside the building to the outside, open and close the motor damper of each ventilation opening in the opposite manner as described above. Since the wind pressure on the leeward side is lower than that inside the building, the air inside the building will be exhausted to the outside through the open damper. is exhausted to.

[Example] Embodiments of the present invention will be described with reference to FIGS. 1 to 6.

Ventilation vents 2 are installed on all four sides of the lower and upper outer walls of building 1.
．． 3 are provided, and the space to be ventilated 4 in the building 1 and each ventilation opening 2.3 are communicated via a ventilation duct 5, respectively. A ventilation duct 5 is also protruded from each ventilation opening 2 in the lower outer wall of the building, and a motor damper 6 and an orifice 7 are provided in the protruding portion facing outward as shown in FIG. The opening at the end allows outside air to be taken in or exhausted. Further, each ventilation opening 3 in the upper outer wall of the building is provided with an outer end duct 8 of an L-shaped passage shown in FIG. 3, and a motor damper 6 and an orifice 7 are provided therein as in FIG. It is designed so that outside air can be taken in or exhausted.

The connecting part of the ventilation duct 5 to the ventilation opening 2 in the lower outer wall does not protrude outside the outer wall, but a motor damper 6 and an orifice 7 are provided inside the ventilation duct 5 at a position inside the outer wall as shown in FIG. You can.

In this case, the outer end of the ventilation duct 5 is connected to the ventilation opening 2 via the constriction part 5a.

Wind pressure sensors 9 are provided at the outer end position of the ventilation duct 5 and at the inner position of the orifice 7, and the respective detected values are input to the differential pressure gauge IO. Differential pressure gauge l
O is capable of detecting the differential pressure between both wind pressure sensors 9, and inputs the differential pressure signal to the control unit 11. The control unit 11 adjusts the opening of the orifice actuating portion 7a based on the input signal. An appropriate wind speed is maintained within the ventilation target space 4.

As shown in Fig. 5.6, the motor damper 6 is configured such that a plurality of middle plates 6a can swing around their respective spindles, and are opened and closed by a motor 6b via a link mechanism. It has become. The motor 6b is controlled by the control unit 11, and in this case, it is controlled based on a detection signal from the wind pressure sensor 9 located outside. That is, when supplying outside air into the ventilation target space 4, open the motor damper 6 at the position where the wind pressure is large (positive pressure greater than the reference value) on the windward side, and open the motor damper 6 at the position where the wind pressure is large on the windward side (negative pressure smaller than the reference value). The motor damper 6 at the pressure) position is closed.

Further, when exhausting air from the ventilation target space 4 to the outside, the motor damper 6 of each ventilation port is opened and closed in the opposite manner to the above. The intake and exhaust of outside air are appropriately switched and operated by the control unit II.

In order to cause ventilation fluctuations in the ventilation target space 4, the microcomputer 12 inputting the fluctuation pattern can control the control unit 11. That is, when the wind pressure sensor 9 outputs positive pressure and outside air begins to flow into the ventilation duct 5, the wind speed is calculated based on the output signal from the differential pressure gauge 10, and the motor damper 6 is adjusted to give an appropriate fluctuation. It is designed to open and close at any time.

As shown in FIG. 4, a switching valve 13 is provided inside the motor damper 6 in the ventilation duct 5, and by switching the switching valve 13, the ventilation target space 4 can be selectively connected to the outside via the ventilation duct 5 or to the air conditioning system +4. It is now possible to communicate. That is, the switching valve 13 is connected to the bypass duct 15.
The air conditioning system 14 is connected to the air conditioning system 14 via the air conditioning system 14 . Also, the switching valve 13
, the actuating device 1.3a is the control unit 11
It is designed to be switched by .

When supplying outside air into the ventilation target space 4 as described above,
Based on the detected value of the wind pressure sensor 9, the control unit 1.1 controls the motor damper 6 to supply air into the ventilation target space 4 by opening the windward side ventilation port and closing the leeward side ventilation port. . In addition, the control unit 11 is appropriately switched from outside air intake to exhaust operation,
By opening and closing the motor damper 6 of each ventilation port in the opposite direction, exhaust is exhausted from the ventilation target space 4 to the outside. In these cases, the control unit 11 controls the orifice actuating section 7a to adjust the opening of the orifice 7 based on the input signal from the differential pressure gauge 1O, thereby setting the ventilation target space 4 at an appropriate wind speed.

[Effects of the Invention] According to the wind ventilation system of the present invention, outside air can be supplied into and exhausted from the building by using the energy of natural wind, and the initial cost and running cost of equipment necessary for ventilation can be reduced. This can be significantly reduced. Also, for any space, the system of the present invention can be used for outside air intake,
By appropriately combining the exhaust, switching with the air conditioning system, adjusting the wind speed, etc., it is possible to create an appropriate wind environment.

[Brief explanation of drawings]

Figure 1 is a conceptual diagram of the wind ventilation system of the present invention, Figure 2 is a sectional view of the wall ventilation opening, Figure 3 is a perspective view of the outer end duct attached to the rooftop ventilation opening, and Figure 4 is the wind ventilation system. Figure 5 is a control system diagram of the motor damper, Figure 6 is an explanatory diagram of
The figure is a perspective view of the motor damper. 2.3; Ventilation vent 4; Ventilation target space 5; Ventilation duct 6: Motor damper 6b; Motor
7; Orifice 9; Wind pressure sensor 11: Control unit I2: Microcomputer 14; Air conditioning system

Claims (3)

[Claims] (1) Ventilation ports are provided on the exterior walls of the building in different directions, and each ventilation port is equipped with a motor damper that is controlled to open and close based on wind pressure.The motor damper of the windward side ventilation port is opened to provide ventilation on the leeward side. A wind ventilation system characterized by supplying outside air into a building by closing a motor damper at the opening, and exhausting air inside the building to the outside by opening and closing the motor damper at each ventilation opening. (2) The wind ventilation system according to claim (1), wherein each ventilation port is provided with an orifice whose opening degree is adjusted based on the wind pressure of the ventilation port, in addition to the motor damper. (3) According to claim (1) or (2), the wind pressure of each ventilation opening is detected by a wind pressure sensor installed in the ventilation opening, and the control unit controls the motor damper etc. based on the detected value of the wind pressure sensor. Wind ventilation system as described.