JPS6129635A - Ventilating device - Google Patents

Abstract

PURPOSE:To enable to control the amount of air ventilation and the effectiveness of a regenerator by a structure wherein air current controlling dampers are arranged along the wall of a building on a ventilating device, which exchanges heat between outdoor suction air and indoor exhaust air by utilizing the static pressure difference due to the air current of natural wind. CONSTITUTION:A heat exchanger 2 with quadrilateral cross-section is provided against a wall body 3 and consists of heat conductive or moisture absorbing and releasing heat exchange elements so as to exchange heat between leading-in air currents 10 and 11 and discharging air currents 8 and 9. In addition, the heat exchanger 2 is sealingly supported by supporting frames 3'. A rotary shaft 6 is installed near the corner of the heat exchanger. Two sheets of air current controlling dampers 4 and 5 are pivotally provided onto the rotary shaft 6 so as to be able to close a leading-in air passage and a discharging air passage. The amount of air ventilation can be controlled by pivoting the dampers.

Description

[Detailed description of the invention] Industrial applications The present invention is installed on a wall facing the outside of a building.

The present invention relates to a ventilation system that utilizes the static pressure difference due to air flow in the external environment to exchange heat between indoor and outdoor air intake and exhaust air, thereby realizing indoor and outdoor ventilation without using power.

Conventional configuration and its problems In order to maintain a comfortable indoor environment of a building, 1.In addition to normal heating and cooling, indoor air is always replaced with outside air at a certain rate, and CO2. It is necessary to expel gas or bad odors. In general.

In an air conditioner, a certain amount of outside air is mixed in when blowing air, or if there is no such device.

It is necessary to regularly open windows and use ventilation fans. On the other hand, this exchange of indoor and outdoor air inevitably means that heating and cooling energy is released to the outside.
There is a contradictory relationship between the comfort of heating and cooling and the energy savings achieved by introducing outside air. To this end, air-conditioning heat exchangers and ventilation fans have now been put into practical use, which cool or warm the introduced outside air by exchanging heat with air-conditioned indoor air before sending it into the room. In particular, when exchanging heat between outside air and exhaust indoor air, so-called total heat exchange, which includes not only sensible heat but also latent heat, is effective and common.

However, these heat exchange systems require power for introducing and discharging outside air and indoor air, which is a problem not only in terms of energy but also in terms of the living environment.

In recent years, with the development of high-rise housing, there are problems such as abnormal wind blowing noise when opening and closing windows due to strong air currents in the sky.Furthermore, in the upper part of such buildings, the wind pressure on the ventilation fans themselves is large and excessive. There are problems such as a large power load being added to ventilation fans, and there is a strong desire to solve the problem of effective energy-saving ventilation in high-rise housing.

Purpose of the Invention The present invention is intended to solve the problems of conventional methods, and uses the static pressure difference between the indoor and outdoor areas caused by the airflow in the outside world to introduce outside air and exhaust indoor air without using power. and by heat exchange between the incoming and outgoing air,
The present invention provides a ventilation device that can minimize unnecessary emissions of heating and cooling energy due to discharge of heated and cooled indoor air.

Structure of the Invention The ventilation system of the present invention is a ventilation system that can be attached to a through hole provided in a wall facing the outside of a building, and has a relationship in which introduced air and exhaust air intersect.

and a sensible heat exchanger or total heat exchanger whose cross section along these two air flows forms a quadrilateral, and an angle-variable airflow control damper that is rotatable on an axis parallel to the wall surface and at a certain distance from the outer wall surface. and a support frame that supports them.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

This is a schematic representation of the surface. The support frame 1 supports components including the cross-channel heat exchanger 2.

It is fixed and installed on a mounting frame 3' fixed to the wall 3. The heat exchanger 2 has a quadrilateral cross section.

One opposing surface is for the introduction air, and the other opposing surface is for the exhaust air, and the structure is such that the introduced air and the exhaust air form independent air flow paths.
In other words, the two sides A of the quadrilateral of the heat exchanger 2.

B is installed parallel to the surface along the outer wall surface of the wall body 3.

The support frame 1 is connected to these two surfaces A and B. One corner of the quadrilateral is on the indoor side, and the rotation shaft 6 of the airflow control dampers 4, 5 is arranged near the remaining corner C so that there is no air leakage between the surfaces of the quadrilateral. The two surfaces Ci and D are held perpendicular to the outer wall surface of the wall body 3. The heat exchanger 2 is fixed so that the two diagonal faces A and B connected to the support frame 1 are substantially along the outer wall surface, and seal the side of the wall through-hole and the side of the support frame. In the construction example in which the rotation shafts 6 of the airflow control dampers 4 and 5 are installed vertically, the two surfaces of the heat exchanger 2 protrude outside the outer wall, and the rotation center is the corner C formed by the two surfaces, and the left and right sides are rotated. A pair of airflow control dampers 4 and 5 are installed. The airflow control dampers 4 and 5 have variable installation angles with respect to the wall along the rotation axis 6, and extend to the left and right of the corner C.

When this device is not in use, the airflow control dampers 4 and 5 should be tilted toward the outside wall and have the necessary width to cover the surfaces of the two heat exchangers facing the outside, allowing outside air to be introduced. If unintentional, the indoor/outdoor air path can be closed. On the other hand, the other two sides of the heat exchanger 2 face the indoor side.

The heat exchange surface facing the left side of the exterior wall is on the right side indoors.

The heat exchange surface facing the right side of the outer wall has independent air flow paths formed on the left side indoors, and sensible heat or total heat exchange is performed between them.

7 shows streamlines of airflow caused by outside wind blowing at an angle on the wall surface. In the case of the streamline shown in the figure, the cavity formed by the airflow control damper 4, the wall surface, and the heat exchanger 2 is under positive pressure, and the air flow along the plurality of heat exchange channels along the heat exchanger 20 side and C. 1, for example, flows into the heat exchange channel as shown by streamline 10, and blows out into the room as shown by streamline 11. On the other hand, on the side of the airflow control damper 5, the cavity formed by the airflow control damper 5, the outer surface of the wall, and the heat exchanger 20 side AC becomes negative pressure due to the effect of the airflow along the upper surface of the airflow control damper 5 in the figure. Indoor air is discharged outdoors along a plurality of heat exchange channels along the 20th side BC of the heat exchanger. The situation is shown by streamlines 8 and 9. On the other hand, a heat exchange channel along streamlines 8 and 9, and streamlines 10 and 11
The heat exchange channels along the two are independent channels that do not allow airflow to mix with each other.

in adjacent relationship via a heat exchange element.

In the case of sensible heat exchange, this heat exchange element is a thin metal plate.

Further, in the case of total heat exchange, a porous plate impregnated with lithium halide or the like as a moisture absorbing/releasing material is recommended. With this configuration, the air introduced from the outside and the air exhausted from the room are balanced in quantity without the use of power, and heat is exchanged with each other. In addition, during summer cooling, it is possible to ventilate the room without introducing high-temperature air from outside into the room, and it is remarkable because it does not use power and recovers heat from exhaust air. Demonstrates energy saving properties.

Furthermore, when power is used, it is possible to solve the problem of the fan motor being subjected to an excessive force load due to external wind pressure and generating abnormal noise. This problem with fans due to outside wind pressure is particularly effective in high-rise buildings, which are constantly exposed to strong wind pressure and require ventilation with the outside. This is a rectifier plate whose purpose is to guide the outflow airflow in opposite directions so that the outflow airflow does not form a closed circuit on the indoor side. Reference numeral 13 denotes a heat insulator that blocks heat from entering and exiting from the box frame 1 due to heat conduction.

In the ventilation system according to the configuration of this embodiment, a thin aluminum plate is formed into a corrugated shape as a heat exchange element, and a thin aluminum plate is overlapped with a flat aluminum plate to form one element, and a large number of these elements are stacked alternately at right angles to form a heat exchanger 2. was configured. The angle between the wind direction and the wall at a distance of light distance from the wall is 45°.
When , the indoor suction wind speed on side BD of heat exchanger 2 is side AD
This was about 80% of the blowing wind speed. Also, at that time, the outside air temperature was 2°C and the indoor temperature was 25°C, but the air flowing in from the outside through the heat exchanger 2 exchanged heat with the discharged indoor air, and the temperature was approximately The temperature rose to 10'C. In other words, according to the present ventilation device, in ventilation with outside air, it is possible to preheat the outside air before introducing it into the room without using any power and without introducing the outside temperature into the room at a low temperature.
It can be seen that it is possible to suppress the increase in heating load due to ventilation.

In the second embodiment having the structure shown in FIG. 1, kraft paper impregnated with lithium halide was used as a heat exchange element in the same manner as the aluminum element described above. According to this example
, the total heat exchange rate of incoming and outgoing air was approximately 40%. That is, according to the ventilation system of the present invention, 40% of the heating energy that flows out together with the air exhausted from the room can be recovered.

Although these embodiments describe examples of heating, it is clear that the ventilation system of the present invention is also effective for cooling.

Next, the effects of the airflow control dampers 4 and 5 will be explained.

It is recommended that the airflow control dampers 4 and 5 be provided with a lever so that the angle can be operated indoors, or a means for adjusting the angle to any desired angle by motor drive. In the second embodiment, levers are provided so that the angles of the airflow control dampers 4 and 6 can be set independently, and the airflow control damper 4 on the blowing side is tilted toward the wall by about 2σ and fixed.

The heat exchange rate in the second embodiment is determined by the airflow control damper 4
The heat exchange rate was approximately 15% higher and the heat exchange rate was 46% compared to the case where the heat exchanger was installed parallel to the wall surface. In this way, the airflow control dampers 4 and 5 can not only control the ventilation amount but also adjust the heat exchange rate.

When installed in an actual building, depending on the wind speed and direction.

Moreover, it has the feature that it can be set arbitrarily according to the required amount of ventilation.

FIG. 2 shows a perspective view of an embodiment in which the airflow control dampers are driven in conjunction with each other. In the figure, the upper top plate for preventing wind and rain from entering from the top of the ventilation system is not shown for the sake of understanding the internal structure. Part numbers in FIG. 2 are the same as those in FIG. 1 if they are the same. 2-1 in this figure
．． Reference numerals 2-2 denote rotating shafts of the airflow control dampers 4 and 5, which are connected by gears 2-3 and 2-4 of the same size and rotate in opposite directions. Also, one of the gears 2-3 and 2-4 is connected to a geared lever 2-5, and by operating this lever from inside the room, the airflow control damper 4,
5 covers the air outlet surface of the heat exchanger 2 and can be adjusted to any opening angle from the closed state.

However, in this case, the intention is not to adjust the angles of the airflow control dampers 4 and 6 independently, but rather to adjust the opening/closing angles with a simple mechanism. Although FIG. 2 shows the opening and closing of the airflow control dampers 4 and 6 using the lever 2-5, this point is also the same when driven by a motor, and in the case of FIG. 1, two motors are required. In this embodiment, the necessary opening/closing operations can be performed with just one piece.

It is needless to say that the effect of the ventilation system according to this embodiment is the same as that of the previous embodiment except in the case where the angles of the airflow control dampers 4 and 5 were set independently.
'Effects of the Invention As shown in (1), the present invention has a heat exchanger in which introduced air and discharged air intersect, and whose cross section along these two air flows forms a quadrilateral, and a heat exchanger which is parallel to the wall surface and has a quadrilateral cross section. A ventilation system that is equipped with a variable-angle airflow control damper that can be rotated on an axis at a certain distance from the outside wall surface and a support frame that supports them. It is installed on the outside wall of a living room in a house and uses no power. It is possible to ventilate indoors and outdoors without noise and noise, and by exchanging heat between air introduced from the outside and air exhausted from inside the room, the leakage of heating and cooling energy to the outside air is reduced. This is an energy-saving ventilation system that has an extremely significant effect on maintaining a comfortable living environment, especially in high-rise housing, which is expected to increase in number in the future.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a horizontal section of a ventilator according to the present invention, and FIG. 2 is an enlarged perspective view of a part of an airflow control damper in another embodiment of the present invention. 1 Support frame, 2... Heat exchanger, 3...
wall. 3'...Mounting frame, 4,5...Airflow control damper. 6... Airflow damper rotation axis, A... Streamline of outside airflow, 8, 9... Streamline of exhaust air, 10,
11: Streamline of incoming air, 12: Current plate,
13...Insulating material, 2-1.2-2...Airflow control damper rotation shaft. 2-3, 2-4-... Gear, 2-5... Angle adjustment lever. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (2)

[Claims] (1) The inlet air flow and the exhaust air flow intersect via a thermally conductive or hygroscopic heat exchange element, and the cross section along these air flows at the intersection of these two air flows has a quadrilateral shape. a support frame that seals and holds the heat exchanger in the vicinity of a pair of opposing corners of the quadrilateral, and a rotating shaft installed in the vicinity of one of the remaining corners. said two airflow control dampers;
The installation angle of the two airflow control dampers is at least an angle parallel to a diagonal line connecting the corners sealed and fixed with a support frame, and an angle that closes the inlet air flow path and the exhaust air flow path of the heat exchanger, respectively. Ventilation system in adjustable relationship between. (2) Two airflow control dampers are installed on two independent and parallel rotating shafts, one of the rotating shafts is provided with means for adjusting the angle of the airflow control damper, and the two dampers are The ventilation device according to claim 1, which is connected via gears provided on each rotating shaft.